/* roulang page: index */
:root {
  --bg: #0A0F1E;
  --bg-soft: #0E1528;
  --card: rgba(255,255,255,0.05);
  --card-border: rgba(255,255,255,0.08);
  --card-border-hover: rgba(255,255,255,0.16);
  --primary: #2563EB;
  --primary-2: #00D4FF;
  --text-1: #F1F5F9;
  --text-2: #94A3B8;
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  background: var(--bg);
  background: radial-gradient(ellipse at 20% 0%, #0B1428 0%, #080C18 60%);
  color: var(--text-1);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
}
button {
  font-family: inherit;
}
.container-site {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 32px;
  padding-right: 32px;
}
.section-pad {
  padding-top: 96px;
  padding-bottom: 96px;
}
/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 15, 30, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background 0.3s;
}
.site-header .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--text-1);
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, #2563EB, #00D4FF);
  box-shadow: 0 0 18px rgba(37,99,235,0.5);
  font-size: 14px;
  font-weight: 900;
  color: #fff;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.main-nav a {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-2);
  padding: 8px 2px;
  transition: color 0.3s;
}
.main-nav a:hover,
.main-nav a.active {
  color: var(--text-1);
}
.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0,212,255,0.6);
}
.btn-login {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 26px;
  border-radius: 999px;
  background: linear-gradient(135deg, #2563EB, #00D4FF);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  box-shadow: 0 0 24px rgba(37,99,235,0.45);
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}
.btn-login:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 36px rgba(37,99,235,0.65);
  filter: brightness(1.08);
}
.btn-login:active {
  transform: translateY(1px);
}
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-1);
  font-size: 24px;
  cursor: pointer;
  padding: 8px;
}
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(8,12,24,0.97);
  backdrop-filter: blur(20px);
  padding: 32px 24px;
  flex-direction: column;
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu .close-btn {
  align-self: flex-end;
  background: none;
  border: none;
  color: var(--text-1);
  font-size: 28px;
  cursor: pointer;
}
.mobile-menu a {
  font-size: 24px;
  font-weight: 700;
  padding: 16px 0;
  color: var(--text-1);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.mobile-menu .btn-login {
  margin-top: 32px;
  width: 100%;
}
/* ===== Hero ===== */
.hero-section {
  position: relative;
  padding-top: 80px;
  padding-bottom: 96px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  top: -40%;
  left: 0;
  width: 100%;
  height: 140%;
  pointer-events: none;
  background-image: radial-gradient(circle at 15% 40%, rgba(37,99,235,0.18), transparent 42%),
                    radial-gradient(circle at 80% 20%, rgba(0,212,255,0.12), transparent 35%);
}
.hero-grid-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 42px 42px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
}
.hero-container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(37,99,235,0.12);
  border: 1px solid rgba(37,99,235,0.35);
  color: #93C5FD;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
}
.hero-badge span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
}
.hero-title {
  font-size: 42px;
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.hero-title .gradient-text {
  background: linear-gradient(135deg, #93C5FD, #00D4FF);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-2);
  margin-bottom: 32px;
  max-width: 540px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: 999px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--text-1);
  font-weight: 500;
  font-size: 15px;
  transition: all 0.3s;
  cursor: pointer;
}
.btn-secondary:hover {
  border-color: rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.08);
}
.hero-trust {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 13px;
  color: var(--text-2);
}
.hero-trust .trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.hero-trust .trust-icon {
  color: var(--success);
  font-style: normal;
}
/* Phone Mockup */
.phone-stage {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}
.phone-glow {
  position: absolute;
  width: 320px;
  height: 480px;
  border-radius: 50%;
  background: rgba(37,99,235,0.22);
  filter: blur(70px);
  z-index: 0;
}
.phone-frame {
  position: relative;
  z-index: 1;
  width: 280px;
  height: 530px;
  border-radius: 32px;
  background: linear-gradient(145deg, rgba(255,255,255,0.12), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.14);
  padding: 10px;
  box-shadow: 0 30px 60px rgba(0,0,0,0.5), 0 0 40px rgba(37,99,235,0.15), inset 0 1px 0 rgba(255,255,255,0.1);
  backdrop-filter: blur(8px);
}
.phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 24px;
  overflow: hidden;
  position: relative;
  background: linear-gradient(180deg, #0B1428, #080C18);
}
.phone-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.8;
}
.phone-top-status {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 40px;
  background: linear-gradient(180deg, rgba(0,0,0,0.4), transparent);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  font-size: 11px;
  font-weight: 600;
  color: rgba(255,255,255,0.9);
}
.phone-progress {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 74px;
  height: 3px;
  border-radius: 2px;
  background: rgba(255,255,255,0.2);
}
.phone-progress::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 42%;
  border-radius: 2px;
  background: linear-gradient(90deg, #2563EB, #00D4FF);
}
.phone-play {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(37,99,235,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 24px rgba(37,99,235,0.6);
  color: #fff;
  font-size: 18px;
  padding-left: 4px;
}
.phone-actions {
  position: absolute;
  right: 14px;
  bottom: 90px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
}
.phone-actions .action-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 11px;
  color: rgba(255,255,255,0.9);
}
.phone-actions .action-ico {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  margin-bottom: 3px;
  backdrop-filter: blur(6px);
}
.phone-caption {
  position: absolute;
  left: 16px;
  right: 60px;
  bottom: 22px;
  font-size: 13px;
  line-height: 1.5;
  color: #fff;
  text-shadow: 0 2px 8px rgba(0,0,0,0.6);
}
/* ===== Section Title ===== */
.section-head {
  margin-bottom: 48px;
}
.section-head .section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: #93C5FD;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}
.section-head .section-tag::before {
  content: '';
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), transparent);
}
.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-1);
  margin-bottom: 12px;
}
.section-head p {
  font-size: 16px;
  color: var(--text-2);
  max-width: 640px;
}
/* ===== Media Cards ===== */
.media-scroll {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 16px;
  scrollbar-width: thin;
  scrollbar-color: rgba(37,99,235,0.4) transparent;
}
.media-scroll::-webkit-scrollbar {
  height: 6px;
}
.media-scroll::-webkit-scrollbar-track {
  background: transparent;
}
.media-scroll::-webkit-scrollbar-thumb {
  background: rgba(37,99,235,0.4);
  border-radius: 3px;
}
.media-card {
  flex: 0 0 280px;
  scroll-snap-align: start;
  border-radius: 16px;
  background: var(--card);
  border: 1px solid var(--card-border);
  overflow: hidden;
  backdrop-filter: blur(12px);
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.media-card:hover {
  transform: translateY(-4px);
  border-color: var(--card-border-hover);
  box-shadow: 0 0 24px rgba(37,99,235,0.2);
}
.media-cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(135deg, #0E1528, #1E293B);
}
.media-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.media-card:hover .media-cover img {
  transform: scale(1.05);
}
.media-duration {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 2px 8px;
  border-radius: 6px;
  background: rgba(0,0,0,0.65);
  font-size: 12px;
  font-weight: 500;
  color: #fff;
  backdrop-filter: blur(4px);
}
.media-play-btn {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(37,99,235,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 15px;
  opacity: 0;
  transition: all 0.3s;
  box-shadow: 0 0 20px rgba(37,99,235,0.5);
}
.media-card:hover .media-play-btn {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}
.media-cover-overlay {
  position: absolute;
  inset: 0;
  background: rgba(8,12,24,0.35);
  opacity: 0;
  transition: opacity 0.3s;
}
.media-card:hover .media-cover-overlay {
  opacity: 1;
}
.media-info {
  padding: 16px;
}
.media-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 8px;
  line-height: 1.5;
}
.media-stats {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-2);
}
/* ===== Planting List ===== */
.plant-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.plant-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  border-radius: 16px;
  background: var(--card);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(12px);
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.plant-item:hover {
  border-color: var(--card-border-hover);
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.plant-thumb {
  flex-shrink: 0;
  width: 84px;
  height: 84px;
  border-radius: 12px;
  overflow: hidden;
  background: linear-gradient(135deg, #0E1528, #1E293B);
}
.plant-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.plant-body {
  flex: 1;
  min-width: 0;
}
.plant-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 4px;
}
.plant-desc {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
  margin-bottom: 6px;
}
.plant-rating {
  font-size: 13px;
  color: var(--warning);
}
.plant-buy {
  flex-shrink: 0;
  padding: 8px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, #2563EB, #00D4FF);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 0 14px rgba(37,99,235,0.3);
}
.plant-buy:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 24px rgba(37,99,235,0.5);
}
.plant-trust-bar {
  margin-top: 32px;
  padding: 20px 28px;
  border-radius: 16px;
  background: rgba(16,185,129,0.06);
  border: 1px solid rgba(16,185,129,0.16);
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--text-2);
}
.plant-trust-bar .trust-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--success);
  font-feature-settings: "tnum";
}
/* ===== Review Cards ===== */
.review-scroll {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 16px;
  scrollbar-width: thin;
  scrollbar-color: rgba(37,99,235,0.4) transparent;
}
.review-scroll::-webkit-scrollbar {
  height: 6px;
}
.review-scroll::-webkit-scrollbar-track {
  background: transparent;
}
.review-scroll::-webkit-scrollbar-thumb {
  background: rgba(37,99,235,0.4);
  border-radius: 3px;
}
.review-card {
  flex: 0 0 300px;
  scroll-snap-align: start;
  border-radius: 16px;
  background: var(--card);
  border: 1px solid var(--card-border);
  padding: 22px;
  backdrop-filter: blur(12px);
  transition: transform 0.3s, border-color 0.3s;
}
.review-card:hover {
  transform: translateY(-3px);
  border-color: var(--card-border-hover);
}
.review-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.review-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.review-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-1);
}
.review-source {
  font-size: 12px;
  color: var(--text-2);
}
.review-stars {
  color: var(--warning);
  font-size: 14px;
  letter-spacing: 2px;
  margin-bottom: 8px;
}
.review-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
/* ===== News Timeline ===== */
.news-section {
  position: relative;
}
.news-card {
  border-radius: 24px;
  background: linear-gradient(150deg, rgba(255,255,255,0.04), rgba(255,255,255,0.015));
  border: 1px solid var(--card-border);
  padding: 40px;
  backdrop-filter: blur(12px);
}
.timeline {
  position: relative;
  padding-left: 32px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background-image: linear-gradient(180deg, rgba(37,99,235,0.5), rgba(0,212,255,0.1));
  border-radius: 2px;
}
.timeline-item {
  position: relative;
  margin-bottom: 28px;
  padding: 20px 24px;
  border-radius: 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.04);
  transition: background 0.3s, border-color 0.3s;
}
.timeline-item:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.1);
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -30px;
  top: 26px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--primary);
  box-shadow: 0 0 0 4px rgba(37,99,235,0.15);
  transition: box-shadow 0.3s;
}
.timeline-item:hover::before {
  box-shadow: 0 0 12px var(--primary), 0 0 0 4px rgba(37,99,235,0.25);
}
.timeline-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.timeline-date {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  font-feature-settings: "tnum";
  letter-spacing: 0.02em;
}
.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  background: rgba(37,99,235,0.12);
  border: 1px solid rgba(37,99,235,0.3);
  color: #93C5FD;
}
.timeline-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.5;
}
.timeline-title a {
  transition: color 0.3s;
}
.timeline-title a:hover {
  color: #93C5FD;
}
.timeline-excerpt {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 10px;
  line-height: 1.7;
}
.read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: #93C5FD;
  transition: gap 0.3s, color 0.3s;
}
.read-more:hover {
  gap: 10px;
  color: #00D4FF;
}
.news-empty {
  padding: 60px 20px;
  text-align: center;
  color: var(--text-2);
  font-size: 16px;
}
.news-empty .empty-ico {
  font-size: 40px;
  margin-bottom: 12px;
  opacity: 0.5;
}
/* ===== FAQ ===== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  border-radius: 16px;
  background: var(--card);
  border: 1px solid var(--card-border);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.faq-item.active {
  border-color: rgba(37,99,235,0.35);
  box-shadow: 0 0 24px rgba(37,99,235,0.08);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-1);
  gap: 16px;
  user-select: none;
}
.faq-question .faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(37,99,235,0.12);
  color: #93C5FD;
  font-size: 14px;
  transition: transform 0.3s, background 0.3s;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: rgba(37,99,235,0.3);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 24px;
  transition: max-height 0.35s ease, padding 0.3s;
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.75;
}
.faq-item.active .faq-answer {
  padding: 0 24px 20px;
  max-height: 400px;
}
.faq-answer-inner {
  padding-top: 4px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
/* ===== CTA ===== */
.cta-banner {
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(37,99,235,0.15), rgba(0,212,255,0.06));
  border: 1px solid rgba(37,99,235,0.3);
  padding: 60px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  left: 20%;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(37,99,235,0.2);
  filter: blur(80px);
}
.cta-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
}
.cta-sub {
  font-size: 16px;
  color: var(--text-2);
  margin-bottom: 32px;
}
.cta-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  background: rgba(8,12,24,0.6);
  padding-top: 64px;
  padding-bottom: 32px;
  margin-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand .logo {
  margin-bottom: 16px;
}
.footer-desc {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-1);
}
.footer-col ul {
  list-style: none;
  padding: 0;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  font-size: 14px;
  color: var(--text-2);
  transition: color 0.3s;
}
.footer-col ul a:hover {
  color: var(--text-1);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-2);
}
.footer-bottom a {
  color: var(--text-2);
  transition: color 0.3s;
}
.footer-bottom a:hover {
  color: var(--text-1);
}
/* ===== A11y ===== */
a:focus-visible,
button:focus-visible {
  outline: 2px solid #00D4FF;
  outline-offset: 3px;
  border-radius: 4px;
}
/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .phone-stage {
    order: 2;
  }
  .main-nav {
    gap: 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .container-site {
    padding-left: 20px;
    padding-right: 20px;
  }
  .section-pad {
    padding-top: 56px;
    padding-bottom: 56px;
  }
  .main-nav {
    display: none;
  }
  .site-header .btn-login {
    display: none;
  }
  .menu-toggle {
    display: block;
  }
  .hero-title {
    font-size: 30px;
  }
  .hero-subtitle {
    font-size: 15px;
  }
  .phone-frame {
    width: 240px;
    height: 460px;
  }
  .plant-grid {
    grid-template-columns: 1fr;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .cta-banner {
    padding: 40px 24px;
  }
  .cta-title {
    font-size: 26px;
  }
  .timeline {
    padding-left: 20px;
  }
  .timeline-item::before {
    left: -22px;
  }
  .news-card {
    padding: 24px;
  }
}
@media (max-width: 520px) {
  .container-site {
    padding-left: 16px;
    padding-right: 16px;
  }
  .review-card {
    flex-basis: 260px;
  }
  .media-card {
    flex-basis: 240px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn-login,
  .hero-actions .btn-secondary {
    width: 100%;
  }
}

/* roulang page: article */
:root {
  --bg: #0A0F1E;
  --bg-soft: #0E1528;
  --card: rgba(255,255,255,0.05);
  --card-border: rgba(255,255,255,0.08);
  --card-border-hover: rgba(255,255,255,0.16);
  --primary: #2563EB;
  --primary-2: #00D4FF;
  --text-1: #F1F5F9;
  --text-2: #94A3B8;
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  background: var(--bg);
  color: var(--text-1);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}
img { max-width:100%; display:block; }
a { color:inherit; text-decoration:none; transition:color .3s; }
button { font-family:inherit; }
.container-site { max-width:1200px; margin:0 auto; padding-left:32px; padding-right:32px; }
.text-muted { color: var(--text-2); }
.section-title { font-size:32px; font-weight:700; letter-spacing:-0.5px; margin-bottom:12px; }
.section-sub { color:var(--text-2); font-size:15px; margin-bottom:40px; max-width:640px; }
.section-space { padding-top:72px; padding-bottom:72px; }

/* NAV */
.main-nav {
  position: sticky; top:0; z-index:50;
  background: rgba(10,15,30,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-main {
  display:flex; align-items:center; justify-content:space-between;
  height:72px;
}
.logo { display:flex; align-items:center; gap:10px; font-weight:700; font-size:20px; letter-spacing:0.5px; }
.logo-mark {
  display:inline-flex; align-items:center; justify-content:center;
  width:38px; height:38px; border-radius:10px;
  background: linear-gradient(135deg,#2563EB,#00D4FF);
  color:#fff; font-size:15px; font-weight:800;
  box-shadow: 0 0 18px rgba(37,99,235,0.45);
}
.nav-links { display:flex; align-items:center; gap:8px; list-style:none; }
.nav-links a {
  display:block; padding:10px 16px; border-radius:999px;
  font-size:15px; color:var(--text-2); transition:all .3s;
}
.nav-links a:hover { color:var(--text-1); background:rgba(255,255,255,0.06); }
.nav-links a.active { color:#fff; background:linear-gradient(135deg,rgba(37,99,235,0.25),rgba(0,212,255,0.12)); border:1px solid rgba(37,99,235,0.4); }
.btn-nav-login {
  display:inline-flex; align-items:center; gap:6px;
  padding:10px 24px; border-radius:999px;
  background: linear-gradient(135deg,#2563EB,#00D4FF);
  color:#fff; font-weight:600; font-size:14px;
  box-shadow: 0 0 24px rgba(37,99,235,0.45);
  transition: all .3s;
  border:none; cursor:pointer;
}
.btn-nav-login:hover { transform:translateY(-1px); box-shadow:0 0 36px rgba(37,99,235,0.65); filter:brightness(1.05); }
.btn-nav-login:active { transform:translateY(1px); }
.btn-nav-login:focus-visible, .nav-links a:focus-visible, .article-tags a:focus-visible, .faq-card button:focus-visible, .footer-col a:focus-visible, .skip-link:focus-visible { outline:2px solid var(--primary-2); outline-offset:2px; }
.menu-toggle { display:none; background:none; border:none; color:#fff; cursor:pointer; padding:8px; }
.menu-toggle:focus-visible { outline:2px solid var(--primary-2); outline-offset:2px; }

/* Mobile Drawer */
.mobile-drawer {
  position: fixed; top:0; right:-100%; width:100%; height:100%;
  background: rgba(10,15,30,0.98);
  backdrop-filter: blur(20px);
  z-index:80;
  padding: 24px 32px;
  display:flex; flex-direction:column;
  transition: right .4s cubic-bezier(0.22,1,0.36,1);
  visibility:hidden;
}
.mobile-drawer.open { right:0; visibility:visible; }
.drawer-top { display:flex; justify-content:space-between; align-items:center; margin-bottom:40px; }
.drawer-close { background:none; border:none; color:#fff; font-size:28px; cursor:pointer; padding:8px; }
.drawer-close:focus-visible { outline:2px solid var(--primary-2); }
.drawer-links { list-style:none; display:flex; flex-direction:column; gap:8px; }
.drawer-links a {
  display:block; padding:16px 12px;
  font-size:20px; font-weight:600; color:var(--text-1);
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.drawer-links a.active { color:var(--primary-2); }
.drawer-links a:hover { color:var(--primary-2); padding-left:20px; transition:padding-left .3s; }
.drawer-btn {
  margin-top:32px; display:inline-flex; justify-content:center;
  padding:14px 24px; border-radius:999px;
  background:linear-gradient(135deg,#2563EB,#00D4FF);
  color:#fff; font-weight:700; font-size:16px;
  box-shadow:0 0 24px rgba(37,99,235,0.45);
}
.drawer-btn:hover { box-shadow:0 0 36px rgba(37,99,235,0.65); }

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

/* BREADCRUMB */
.breadcrumb-wrap { padding:24px 0 8px; }
.breadcrumb {
  display:flex; align-items:center; flex-wrap:wrap;
  gap:6px; font-size:13px; color:var(--text-2);
}
.breadcrumb a { color:var(--text-2); }
.breadcrumb a:hover { color:var(--primary-2); }
.breadcrumb .sep { color:rgba(255,255,255,0.25); margin:0 2px; }

/* ARTICLE */
.article-hero { padding:32px 0 20px; }
.article-meta {
  display:flex; align-items:center; flex-wrap:wrap; gap:18px;
  font-size:13px; color:var(--text-2); margin-top:16px;
}
.article-meta .meta-item { display:flex; align-items:center; gap:6px; }
.article-card {
  background: var(--card);
  border:1px solid var(--card-border);
  border-radius:16px;
  padding: 48px 32px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.06);
  margin-bottom:56px;
  backdrop-filter: blur(12px);
}
.article-body-inner { max-width:760px; margin:0 auto; }
.article-body-inner h2 { font-size:26px; font-weight:700; margin-top:36px; margin-bottom:16px; line-height:1.4; color:var(--text-1); }
.article-body-inner h3 { font-size:20px; font-weight:600; margin-top:28px; margin-bottom:12px; color:var(--text-1); }
.article-body-inner p { font-size:16px; line-height:1.8; margin-bottom:20px; color:rgba(241,245,249,0.92); }
.article-body-inner blockquote {
  border-left:3px solid var(--primary);
  background:rgba(37,99,235,0.08);
  padding:16px 24px; margin:24px 0; border-radius:0 8px 8px 0;
  color:var(--text-2); font-style:normal;
}
.article-body-inner blockquote p { margin-bottom:0; color:var(--text-2); }
.article-body-inner ul, .article-body-inner ol { margin:0 0 20px 0; padding-left:1.4em; }
.article-body-inner li { margin-bottom:8px; line-height:1.8; }
.article-body-inner img { border-radius:12px; margin:24px 0; }
.article-body-inner figure { margin:24px 0; }
.article-body-inner figcaption { font-size:13px; color:var(--text-2); text-align:center; margin-top:8px; }
.article-body-inner table { width:100%; border-collapse:collapse; margin:24px 0; font-size:14px; }
.article-body-inner th { background:rgba(37,99,235,0.15); font-weight:600; padding:10px 14px; text-align:left; border:1px solid rgba(255,255,255,0.1); }
.article-body-inner td { padding:8px 14px; border:1px solid rgba(255,255,255,0.08); }
.article-body-inner code { background:rgba(255,255,255,0.1); padding:2px 6px; border-radius:4px; font-size:14px; font-family:"SFMono-Regular",Menlo,Consolas,monospace; }
.article-body-inner a { color:var(--primary-2); text-decoration:underline; text-underline-offset:3px; }
.article-body-inner a:hover { text-decoration:none; }

.article-tags { display:flex; flex-wrap:wrap; gap:10px; margin-top:32px; padding-top:24px; border-top:1px solid rgba(255,255,255,0.08); }
.article-tags span { font-size:13px; color:var(--text-2); margin-right:4px; }
.article-tags a {
  display:inline-block; padding:5px 14px; border-radius:999px;
  background:rgba(255,255,255,0.06); border:1px solid rgba(255,255,255,0.1);
  color:var(--text-2); font-size:12px; transition:all .3s;
}
.article-tags a:hover { border-color:var(--primary); color:var(--text-1); background:rgba(37,99,235,0.15); }

/* RELATED */
.related-wrap { margin-bottom:56px; }
.related-grid { display:grid; grid-template-columns:repeat(3, 1fr); gap:24px; }
.related-card {
  background:var(--card); border:1px solid var(--card-border);
  border-radius:16px; overflow:hidden; transition:all .3s;
  box-shadow:0 8px 32px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.06);
  display:flex; flex-direction:column;
}
.related-card:hover { transform:translateY(-4px); border-color:var(--card-border-hover); box-shadow:0 0 24px rgba(37,99,235,0.2), 0 8px 32px rgba(0,0,0,0.35); }
.related-cover { aspect-ratio:16/9; background:linear-gradient(135deg,#0B1428,#080C18); position:relative; overflow:hidden; }
.related-cover img { width:100%; height:100%; object-fit:cover; }
.related-body { padding:20px; display:flex; flex-direction:column; gap:8px; flex:1; }
.related-body h3 { font-size:16px; font-weight:600; line-height:1.5; }
.related-body h3 a:hover { color:var(--primary-2); }
.related-date { font-size:12px; color:var(--text-2); margin-top:auto; }

/* FAQ */
.faq-wrap { margin-bottom:56px; }
.faq-card {
  background:var(--card); border:1px solid var(--card-border);
  border-radius:12px; margin-bottom:12px; overflow:hidden;
  transition:border-color .3s;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
.faq-card:hover { border-color:var(--card-border-hover); }
.faq-btn {
  width:100%; display:flex; justify-content:space-between; align-items:center;
  background:none; border:none; color:var(--text-1); cursor:pointer;
  padding:20px 24px; font-size:16px; font-weight:600; text-align:left;
  transition:color .3s;
}
.faq-btn:hover { color:#fff; }
.faq-btn:focus-visible { outline:2px solid var(--primary-2); outline-offset:-2px; }
.faq-icon { font-size:20px; color:var(--text-2); transition:transform .3s; flex-shrink:0; margin-left:16px; }
.faq-card.active .faq-icon { transform:rotate(45deg); }
.faq-card.active .faq-btn { color:var(--primary-2); }
.faq-body {
  max-height:0; overflow:hidden; transition:max-height .4s ease;
  padding: 0 24px; color:var(--text-2); font-size:14px; line-height:1.8;
}
.faq-card.active .faq-body { max-height:600px; padding-bottom:20px; }

/* CTA */
.cta-banner {
  position:relative; border-radius:16px; overflow:hidden;
  background: linear-gradient(135deg, rgba(37,99,235,0.2), rgba(0,212,255,0.08));
  border:1px solid rgba(37,99,235,0.3);
  box-shadow: 0 0 32px rgba(37,99,235,0.25);
  padding:54px 40px;
  text-align:center;
  margin-bottom:72px;
}
.cta-banner h3 { font-size:30px; font-weight:700; margin-bottom:12px; }
.cta-banner p { color:var(--text-2); max-width:520px; margin:0 auto 28px; font-size:15px; }
.cta-btn-gradient {
  display:inline-flex; align-items:center; gap:8px;
  padding:14px 40px; border-radius:999px;
  background:linear-gradient(135deg,#2563EB,#00D4FF);
  color:#fff; font-weight:700; font-size:16px;
  box-shadow:0 0 24px rgba(37,99,235,0.45);
  transition:all .3s; border:none; cursor:pointer;
}
.cta-btn-gradient:hover { box-shadow:0 0 36px rgba(37,99,235,0.65); transform:translateY(-2px); filter:brightness(1.05); }
.cta-btn-gradient:active { transform:translateY(1px); }

/* FOOTER */
.site-footer { border-top:1px solid rgba(255,255,255,0.06); background:rgba(8,12,24,0.8); padding:64px 0 24px; }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; margin-bottom:48px; }
.footer-brand .logo { margin-bottom:16px; }
.footer-brand p { color:var(--text-2); font-size:14px; line-height:1.7; max-width:320px; }
.footer-col h4 { color:var(--text-1); font-size:15px; font-weight:600; margin-bottom:16px; }
.footer-col ul { list-style:none; }
.footer-col li { margin-bottom:10px; }
.footer-col a { font-size:14px; color:var(--text-2); transition:color .3s; }
.footer-col a:hover { color:var(--text-1); }
.footer-bottom { border-top:1px solid rgba(255,255,255,0.06); padding-top:20px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; font-size:13px; color:var(--text-2); }
.footer-bottom a { color:var(--text-2); }
.footer-bottom a:hover { color:var(--primary-2); }

.btn-back-list {
  display:inline-flex; align-items:center; gap:8px;
  padding:12px 32px; border-radius:999px;
  border:1px solid rgba(255,255,255,0.15);
  color:var(--text-1); font-weight:500; font-size:14px;
  transition:all .3s; cursor:pointer; background:transparent;
}
.btn-back-list:hover { border-color:rgba(255,255,255,0.3); background:rgba(255,255,255,0.05); }
.btn-back-list:focus-visible { outline:2px solid var(--primary-2); outline-offset:2px; }

/* SKIP */
.skip-link {
  position:absolute; left:-999px; top:8px;
  background:var(--primary); color:#fff; padding:8px 16px;
  border-radius:4px; z-index:90; font-size:14px;
}
.skip-link:focus { left:16px; }

/* BG DECORATIONS */
.page-bg-decor { position:fixed; inset:0; z-index:-1; overflow:hidden; pointer-events:none; }
.bg-orb-1 { position:absolute; width:500px; height:500px; border-radius:50%; background:rgba(37,99,235,0.18); filter:blur(120px); top:-120px; right:-80px; }
.bg-orb-2 { position:absolute; width:400px; height:400px; border-radius:50%; background:rgba(0,212,255,0.08); filter:blur(100px); bottom:-100px; left:-60px; }
.bg-grid-lines {
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size:48px 48px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.6) 0%, transparent 70%);
}

/* PAGER */
.tag-chip { display:inline-block; padding:4px 14px; border-radius:999px; background:rgba(37,99,235,0.2); color:var(--primary-2); font-size:12px; font-weight:500; }

/* TABLET */
@media (max-width:1024px) {
  .footer-grid { grid-template-columns:1fr 1fr; }
  .related-grid { grid-template-columns:1fr 1fr; }
}
@media (max-width:768px) {
  .nav-links, .nav-login { display:none; }
  .menu-toggle { display:block; }
  .header-main { height:64px; }
  .container-site { padding-left:16px; padding-right:16px; }
  .section-title { font-size:26px; }
  .section-space { padding-top:56px; padding-bottom:56px; }
  .article-card { padding:24px 16px; }
  .article-body-inner h2 { font-size:22px; }
  .footer-grid { grid-template-columns:1fr 1fr; gap:24px; }
  .footer-bottom { flex-direction:column; align-items:flex-start; }
  .cta-banner { padding:40px 20px; }
  .cta-banner h3 { font-size:24px; }
  .related-grid { grid-template-columns:1fr; }
}
@media (max-width:520px) {
  .footer-grid { grid-template-columns:1fr; }
  .article-meta { gap:10px; flex-direction:column; align-items:flex-start; }
  .breadcrumb-wrap { font-size:12px; }
  .container-site { padding-left:16px; padding-right:16px; }
}

/* roulang page: category1 */
:root {
            --bg: #0A0F1E;
            --bg-soft: #0E1528;
            --card: rgba(255, 255, 255, 0.05);
            --card-border: rgba(255, 255, 255, 0.08);
            --card-border-hover: rgba(255, 255, 255, 0.16);
            --primary: #2563EB;
            --primary-2: #00D4FF;
            --text-1: #F1F5F9;
            --text-2: #94A3B8;
            --success: #10B981;
            --warning: #F59E0B;
            --error: #EF4444;
            --radius-card: 16px;
            --radius-btn: 999px;
            --radius-small: 8px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.06);
            --shadow-hover: 0 0 24px rgba(37, 99, 235, 0.2);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            background-image: radial-gradient(ellipse at top center, #0B1428, #080C18);
            color: var(--text-1);
            line-height: 1.75;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            font-feature-settings: "tnum";
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
        }

        .container-site {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        @media (max-width: 640px) {
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ---------- Header / Nav ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(10, 15, 30, 0.72);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--text-1);
            white-space: nowrap;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            color: #fff;
            font-size: 13px;
            font-weight: 800;
            letter-spacing: 0;
            box-shadow: 0 0 18px rgba(37, 99, 235, 0.45);
            flex-shrink: 0;
        }

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

        .main-nav a {
            display: inline-block;
            padding: 9px 18px;
            border-radius: var(--radius-btn);
            color: var(--text-2);
            font-size: 15px;
            font-weight: 500;
            transition: all 0.25s ease;
        }

        .main-nav a:hover {
            color: var(--text-1);
            background: rgba(255, 255, 255, 0.06);
        }

        .main-nav a.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.28), rgba(0, 212, 255, 0.16));
            box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.32);
        }

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

        .menu-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            padding: 9px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--card-border);
            border-radius: 10px;
            transition: border-color 0.25s ease;
        }

        .menu-toggle:hover {
            border-color: rgba(255, 255, 255, 0.2);
        }

        .menu-toggle span {
            display: block;
            height: 2px;
            border-radius: 2px;
            background: var(--text-1);
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            inset: 72px 0 0;
            z-index: 49;
            background: rgba(8, 12, 24, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            padding: 32px 24px 40px;
            flex-direction: column;
            overflow-y: auto;
        }

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

        .mobile-menu .mobile-nav {
            display: flex;
            flex-direction: column;
            align-items: stretch;
            gap: 8px;
            margin-bottom: 32px;
        }

        .mobile-menu .mobile-nav a {
            display: block;
            padding: 14px 16px;
            border-radius: 12px;
            color: var(--text-1);
            font-size: 18px;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--card-border);
            text-align: center;
        }

        .mobile-menu .mobile-nav a.active {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.3), rgba(0, 212, 255, 0.18));
            border-color: rgba(37, 99, 235, 0.4);
            color: #fff;
        }

        /* ---------- Buttons ---------- */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            border: none;
            line-height: 1;
            white-space: nowrap;
            transition: all 0.25s ease;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            color: #fff;
            box-shadow: 0 0 24px rgba(37, 99, 235, 0.45);
        }

        .btn-primary:hover {
            box-shadow: 0 0 36px rgba(37, 99, 235, 0.65);
            transform: translateY(-1px);
            filter: brightness(1.08);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-1);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .btn-ghost:hover {
            border-color: rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-1px);
        }

        .btn-ghost:active {
            transform: translateY(1px);
        }

        .btn-sm {
            padding: 9px 20px;
            font-size: 14px;
        }

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

        .btn-block {
            width: 100%;
        }

        .btn:focus-visible,
        .main-nav a:focus-visible,
        .menu-toggle:focus-visible,
        .toc-link:focus-visible,
        .card-link:focus-visible,
        .logo:focus-visible {
            outline: 2px solid var(--primary-2);
            outline-offset: 3px;
            border-radius: 6px;
        }

        /* ---------- Page Hero ---------- */
        .page-hero {
            position: relative;
            padding: 80px 0 80px;
            background-size: cover;
            background-position: center center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 85% 20%, rgba(37, 99, 235, 0.22), transparent 55%);
            pointer-events: none;
        }

        .page-hero .container-site {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 20px;
            font-size: 14px;
            color: var(--text-2);
        }

        .breadcrumb a {
            color: var(--text-2);
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: var(--text-1);
        }

        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.3);
        }

        .hero-title {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin-bottom: 18px;
        }

        .hero-title .accent {
            background: linear-gradient(120deg, #60A5FA, #00D4FF);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 17px;
            color: var(--text-2);
            max-width: 680px;
            line-height: 1.8;
        }

        @media (max-width: 640px) {
            .page-hero {
                padding: 56px 0 56px;
            }
            .hero-title {
                font-size: 30px;
            }
            .hero-desc {
                font-size: 15px;
            }
        }

        /* ---------- Category Main ---------- */
        .category-main {
            padding-top: 56px;
        }

        .content-layout {
            display: grid;
            grid-template-columns: 260px 1fr;
            gap: 40px;
            align-items: start;
            padding-bottom: 96px;
        }

        /* TOC Sidebar */
        .toc-sidebar {
            position: sticky;
            top: 96px;
            background: var(--card);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
        }

        .toc-inner {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .toc-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-1);
            letter-spacing: 0.5px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--card-border);
        }

        .toc-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .toc-link {
            display: block;
            padding: 10px 14px;
            border-radius: 10px;
            color: var(--text-2);
            font-size: 14px;
            font-weight: 500;
            border-left: 2px solid transparent;
            transition: all 0.25s ease;
        }

        .toc-link:hover {
            color: var(--text-1);
            background: rgba(255, 255, 255, 0.05);
            border-left-color: var(--primary-2);
        }

        .toc-sidebar .btn {
            margin-top: 6px;
        }

        /* Content Main */
        .content-main {
            min-width: 0;
        }

        .card-section {
            margin-bottom: 56px;
            scroll-margin-top: 96px;
        }

        .section-head {
            margin-bottom: 22px;
        }

        .section-head h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 6px;
            letter-spacing: -0.3px;
        }

        .section-head p {
            color: var(--text-2);
            font-size: 14px;
        }

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

        .glass-card {
            background: var(--card);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .info-card {
            display: flex;
            flex-direction: column;
            overflow: hidden;
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }

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

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

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

        .info-card:hover .card-media img {
            transform: scale(1.04);
        }

        .card-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(10, 15, 30, 0.5));
            pointer-events: none;
        }

        .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(10, 15, 30, 0.72);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-1);
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0;
        }

        .card-body {
            padding: 20px 20px 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

        .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            letter-spacing: -0.2px;
        }

        .card-body p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-2);
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary-2);
            font-size: 14px;
            font-weight: 600;
            transition: gap 0.25s ease, color 0.2s ease;
            align-self: flex-start;
        }

        .card-link:hover {
            gap: 10px;
            color: #5EEAD4;
        }

        /* ---------- CTA ---------- */
        .cta-section {
            padding: 8px 0 96px;
        }

        .cta-box {
            position: relative;
            text-align: center;
            padding: 56px 40px;
            border-radius: 24px;
            background: radial-gradient(circle at 80% 15%, rgba(37, 99, 235, 0.25), transparent 60%),
                radial-gradient(circle at 15% 85%, rgba(0, 212, 255, 0.12), transparent 50%),
                rgba(255, 255, 255, 0.05);
            border: 1px solid var(--card-border);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 40px 40px;
            pointer-events: none;
        }

        .cta-box h2 {
            font-size: 30px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-box p {
            color: var(--text-2);
            font-size: 16px;
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        @media (max-width: 640px) {
            .cta-section {
                padding: 0 0 64px;
            }
            .cta-box {
                padding: 40px 20px;
            }
            .cta-box h2 {
                font-size: 23px;
            }
            .cta-box p {
                font-size: 14px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-actions .btn {
                width: 100%;
            }
        }

        /* ---------- Footer ---------- */
        .site-footer {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            background: rgba(8, 12, 24, 0.85);
            padding: 64px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand .logo {
            margin-bottom: 14px;
        }

        .footer-desc {
            color: var(--text-2);
            font-size: 14px;
            line-height: 1.75;
            max-width: 330px;
            margin-top: 12px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-1);
        }

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

        .footer-col a {
            color: var(--text-2);
            font-size: 14px;
            transition: color 0.2s ease;
        }

        .footer-col a:hover {
            color: var(--text-1);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            color: var(--text-2);
            font-size: 13px;
        }

        .footer-bottom a {
            color: var(--text-2);
            transition: color 0.2s ease;
        }

        .footer-bottom a:hover {
            color: var(--text-1);
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 520px) {
            .site-footer {
                padding: 48px 0 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ---------- Responsive Layout ---------- */
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .header-inner {
                height: 64px;
            }
            .mobile-menu {
                inset: 64px 0 0;
            }
        }

        @media (min-width: 769px) {
            .mobile-menu {
                display: none !important;
            }
        }

        @media (max-width: 1024px) {
            .content-layout {
                grid-template-columns: 220px 1fr;
                gap: 28px;
            }
            .card-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 640px) {
            .content-layout {
                grid-template-columns: 1fr;
                gap: 24px;
                padding-bottom: 64px;
            }
            .toc-sidebar {
                position: relative;
                top: auto;
                order: -1;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .card-section {
                margin-bottom: 40px;
            }
            .section-head h2 {
                font-size: 22px;
            }
            .header-actions .btn {
                display: none;
            }
        }

        @media (min-width: 641px) and (max-width: 768px) {
            .header-actions .btn {
                display: inline-flex;
            }
        }

/* roulang page: category2 */
:root {
            --bg: #0A0F1E;
            --bg-soft: #0E1528;
            --card: rgba(255, 255, 255, 0.05);
            --card-border: rgba(255, 255, 255, 0.08);
            --card-border-hover: rgba(255, 255, 255, 0.16);
            --primary: #2563EB;
            --primary-2: #00D4FF;
            --text-1: #F1F5F9;
            --text-2: #94A3B8;
            --success: #10B981;
            --warning: #F59E0B;
            --error: #EF4444;
            --radius-lg: 16px;
            --radius-md: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.06);
            --shadow-hover: 0 0 24px rgba(37, 99, 235, 0.2);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg);
            background-image: radial-gradient(circle at 20% 0%, #0B1428 0%, #080C18 100%);
            color: var(--text-1);
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease;
        }

        button {
            font-family: inherit;
            cursor: pointer;
        }

        .container-site {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(10, 15, 30, 0.72);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            transition: background .3s ease;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--text-1);
            flex-shrink: 0;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            color: #fff;
            box-shadow: 0 0 18px rgba(37, 99, 235, 0.4);
        }

        .logo-mark svg {
            width: 20px;
            height: 20px;
        }

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

        .nav-link {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-2);
            transition: all .25s ease;
        }

        .nav-link:hover {
            color: var(--text-1);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link.active {
            color: #fff;
            background: rgba(37, 99, 235, 0.18);
            box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.35);
        }

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

        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            padding: 0;
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-1);
            border-radius: 2px;
            transition: all .3s ease;
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        .drawer {
            position: fixed;
            inset: 0;
            z-index: 200;
            background: rgba(8, 12, 24, 0.98);
            backdrop-filter: blur(16px);
            display: flex;
            flex-direction: column;
            padding: 24px 28px 40px;
            transform: translateY(-100%);
            transition: transform .4s cubic-bezier(.16, 1, .3, 1);
            overflow-y: auto;
        }

        .drawer.open {
            transform: translateY(0);
        }

        .drawer-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 40px;
        }

        .drawer-close {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-1);
            font-size: 22px;
            line-height: 1;
            transition: background .2s ease;
        }

        .drawer-close:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        .drawer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }

        .drawer-links a {
            display: block;
            padding: 14px 4px;
            font-size: 22px;
            font-weight: 600;
            color: var(--text-2);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: color .2s ease, padding-left .2s ease;
        }

        .drawer-links a:hover,
        .drawer-links a.active {
            color: var(--text-1);
            padding-left: 14px;
        }

        .drawer-cta {
            margin-top: 20px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            padding: 14px 28px;
            border-radius: 999px;
            border: none;
            box-shadow: 0 0 24px rgba(37, 99, 235, 0.45);
            transition: all .3s ease;
            white-space: nowrap;
        }

        .btn-primary:hover {
            box-shadow: 0 0 36px rgba(37, 99, 235, 0.65);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 18px rgba(37, 99, 235, 0.4);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(0, 212, 255, 0.5);
            outline-offset: 3px;
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-1);
            font-weight: 500;
            font-size: 15px;
            padding: 14px 28px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: all .3s ease;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            border-color: rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

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

        .btn-secondary:focus-visible {
            outline: 3px solid rgba(0, 212, 255, 0.4);
            outline-offset: 3px;
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary-2);
            font-weight: 500;
            font-size: 14px;
            transition: gap .25s ease, color .25s ease;
        }

        .btn-text:hover {
            gap: 10px;
            color: #fff;
        }

        .glass-card {
            background: var(--card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
        }

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

        .page-section {
            padding: 96px 0;
        }

        .page-hero {
            position: relative;
            padding: 180px 0 80px;
            background:
                radial-gradient(ellipse at 80% 10%, rgba(37, 99, 235, 0.25) 0%, transparent 50%),
                radial-gradient(ellipse at 15% 60%, rgba(0, 212, 255, 0.12) 0%, transparent 40%),
                linear-gradient(rgba(8, 12, 24, 0.88), rgba(10, 15, 30, 0.95)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
        }

        .page-hero .container-site {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-2);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: var(--text-2);
        }

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

        .breadcrumb .sep {
            opacity: .6;
        }

        .page-hero h1 {
            max-width: 900px;
            font-size: 42px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.5px;
            margin: 0 0 18px;
            background: linear-gradient(135deg, #fff 0%, #BFDBFE 60%, var(--primary-2) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .page-hero .hero-sub {
            max-width: 680px;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-2);
            margin: 0 0 32px;
        }

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

        .cat-layout {
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 40px;
            align-items: start;
        }

        .cat-sidebar {
            position: sticky;
            top: 96px;
            padding: 28px 24px;
            border-radius: var(--radius-lg);
            background: var(--card);
            border: 1px solid var(--card-border);
            backdrop-filter: blur(12px);
        }

        .cat-sidebar h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 18px;
            padding-bottom: 14px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .cat-sidebar ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .cat-sidebar a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-2);
            transition: all .25s ease;
        }

        .cat-sidebar a::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--text-2);
            opacity: .5;
            transition: all .25s ease;
            flex-shrink: 0;
        }

        .cat-sidebar a:hover {
            background: rgba(37, 99, 235, 0.12);
            color: var(--text-1);
        }

        .cat-sidebar a:hover::before {
            background: var(--primary-2);
            opacity: 1;
            box-shadow: 0 0 8px rgba(0, 212, 255, 0.6);
        }

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

        .card-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            border-radius: 14px 14px 0 0;
            overflow: hidden;
            background-size: cover;
            background-position: center;
        }

        .card-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(10, 15, 30, 0.5) 100%);
        }

        .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: rgba(10, 15, 30, 0.75);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            letter-spacing: 0.3px;
        }

        .card-body {
            padding: 20px 20px 22px;
        }

        .card-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin: 0 0 10px;
            line-height: 1.4;
        }

        .card-body p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-2);
            margin: 0 0 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .scene-section {
            background: var(--bg-soft);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

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

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.4px;
            margin: 0 0 12px;
        }

        .section-head p {
            font-size: 15px;
            color: var(--text-2);
            margin: 0;
        }

        .scene-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }

        .scene-tag {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 24px;
            border-radius: 999px;
            background: var(--card);
            border: 1px solid var(--card-border);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-1);
            transition: all .3s ease;
            backdrop-filter: blur(8px);
        }

        .scene-tag:hover {
            border-color: rgba(0, 212, 255, 0.4);
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.18);
            transform: translateY(-2px);
        }

        .scene-tag svg {
            width: 18px;
            height: 18px;
            color: var(--primary-2);
            flex-shrink: 0;
        }

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

        .process-step {
            position: relative;
            padding: 32px 24px;
            border-radius: var(--radius-lg);
            background: var(--card);
            border: 1px solid var(--card-border);
            text-align: center;
            transition: all .3s ease;
            backdrop-filter: blur(12px);
        }

        .process-step:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 212, 255, 0.25);
        }

        .process-step .step-num {
            width: 44px;
            height: 44px;
            margin: 0 auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.3), rgba(0, 212, 255, 0.2));
            border: 1px solid rgba(37, 99, 235, 0.4);
            font-size: 18px;
            font-weight: 800;
            color: var(--primary-2);
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            margin: 0 0 10px;
        }

        .process-step p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-2);
            margin: 0;
        }

        .faq-wrap {
            max-width: 840px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--card-border);
            border-radius: 14px;
            overflow: hidden;
            transition: border-color .3s ease, box-shadow .3s ease;
            backdrop-filter: blur(12px);
        }

        .faq-item.open {
            border-color: rgba(37, 99, 235, 0.4);
            box-shadow: 0 0 24px rgba(37, 99, 235, 0.12);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            width: 100%;
            padding: 20px 22px;
            background: transparent;
            border: none;
            color: var(--text-1);
            font-size: 16px;
            font-weight: 600;
            text-align: left;
            transition: background .25s ease;
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.04);
        }

        .faq-question:focus-visible {
            outline: 2px solid rgba(0, 212, 255, 0.6);
            outline-offset: -2px;
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(37, 99, 235, 0.15);
            border: 1px solid rgba(37, 99, 235, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: transform .3s ease, background .3s ease;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            width: 10px;
            height: 2px;
            background: var(--primary-2);
            border-radius: 2px;
            transition: transform .3s ease;
        }

        .faq-icon::after {
            transform: rotate(90deg);
        }

        .faq-item.open .faq-icon::after {
            transform: rotate(0deg);
        }

        .faq-item.open .faq-icon {
            background: rgba(37, 99, 235, 0.35);
        }

        .faq-answer-wrap {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows .4s cubic-bezier(.16, 1, .3, 1);
        }

        .faq-item.open .faq-answer-wrap {
            grid-template-rows: 1fr;
        }

        .faq-answer {
            overflow: hidden;
        }

        .faq-answer-inner {
            padding: 0 22px 22px 64px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-2);
        }

        .faq-answer-inner p {
            margin: 0 0 8px;
        }

        .faq-answer-inner p:last-child {
            margin-bottom: 0;
        }

        .cta-section {
            background:
                radial-gradient(ellipse at 50% 100%, rgba(37, 99, 235, 0.25) 0%, transparent 60%),
                var(--bg);
            padding: 80px 0;
        }

        .cta-box {
            max-width: 900px;
            margin: 0 auto;
            text-align: center;
            padding: 56px 40px;
            border-radius: 24px;
            background: var(--card);
            border: 1px solid var(--card-border);
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
        }

        .cta-box h2 {
            font-size: 30px;
            font-weight: 700;
            margin: 0 0 14px;
            letter-spacing: -0.4px;
        }

        .cta-box p {
            font-size: 15px;
            color: var(--text-2);
            margin: 0 0 28px;
        }

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

        .site-footer {
            background: #070B14;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-brand .logo {
            margin-bottom: 14px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-2);
            margin: 0;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-1);
            margin: 0 0 16px;
        }

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

        .footer-col a {
            font-size: 14px;
            color: var(--text-2);
            transition: color .2s ease, padding-left .2s ease;
        }

        .footer-col a:hover {
            color: var(--text-1);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: var(--text-2);
        }

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

        .footer-bottom a:hover {
            color: var(--text-1);
        }

        :focus-visible {
            outline: 3px solid rgba(0, 212, 255, 0.5);
            outline-offset: 3px;
        }

        ::selection {
            background: rgba(37, 99, 235, 0.4);
            color: #fff;
        }

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

        ::-webkit-scrollbar-track {
            background: #0A0F1E;
        }

        ::-webkit-scrollbar-thumb {
            background: rgba(148, 163, 184, 0.3);
            border-radius: 10px;
            border: 2px solid #0A0F1E;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: rgba(148, 163, 184, 0.5);
        }

        @media (max-width: 1024px) {
            .cat-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .cat-sidebar {
                position: relative;
                top: auto;
                overflow-x: auto;
                padding: 20px;
            }

            .cat-sidebar ul {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 0;
            }

            .cat-sidebar a {
                font-size: 13px;
                padding: 8px 12px;
            }

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

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

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

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

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

            .page-hero {
                padding: 140px 0 64px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

            .container-site {
                padding: 0 20px;
            }

            .page-section {
                padding: 64px 0;
            }

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

            .section-head h2 {
                font-size: 26px;
            }

            .cat-cards {
                grid-template-columns: 1fr;
            }

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

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

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

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

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 27px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

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

            .cat-sidebar {
                padding: 16px;
            }

            .cat-sidebar ul {
                flex-wrap: nowrap;
                overflow-x: auto;
                padding-bottom: 4px;
            }

            .cat-sidebar a {
                white-space: nowrap;
            }

            .process-step {
                padding: 24px 20px;
            }

            .faq-answer-inner {
                padding: 0 18px 18px 18px;
            }

            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }

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