/* roulang page: index */
:root {
  --primary: #00C2FF;
  --primary-light: #33E0FF;
  --accent: #C6FF00;
  --bg-deep: #0B1120;
  --bg-soft: #101B32;
  --bg-card: rgba(255, 255, 255, 0.06);
  --bg-card-strong: rgba(255, 255, 255, 0.09);
  --line: rgba(255, 255, 255, 0.10);
  --line-strong: rgba(0, 194, 255, 0.42);
  --title: #F5F8FF;
  --body: #B7C5DA;
  --muted: #8494AE;
  --dark-text: #061B34;
  --radius-lg: 20px;
  --radius-md: 12px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(0, 194, 255, 0.25);
  --space-section: clamp(60px, 9vw, 100px);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg-deep);
  color: var(--body);
  font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5 {
  font-family: inherit;
  color: var(--title);
  line-height: 1.3;
  margin: 0 0 12px;
}

p {
  margin: 0 0 16px;
}

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

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #8CE8FF;
}

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

button {
  cursor: pointer;
}

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

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

.section {
  padding: var(--space-section) 0;
  position: relative;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0));
}

.sec-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 194, 255, 0.12);
  color: var(--primary-light);
  border: 1px solid rgba(0, 194, 255, 0.2);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.2px;
  margin-bottom: 16px;
}

.section-head {
  max-width: 820px;
  margin: 0 auto 46px;
  text-align: center;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: 0.2px;
}

.section-sub {
  font-size: 16px;
  color: var(--muted);
  margin-top: 12px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 26px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  transition: all 0.22s ease;
  white-space: nowrap;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #0E8FE3);
  color: var(--dark-text);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 34px rgba(0, 194, 255, 0.45);
  color: #04182D;
  filter: brightness(1.05);
}

.btn-outline {
  border-color: rgba(255, 255, 255, 0.26);
  background: rgba(255, 255, 255, 0.03);
  color: #E8F0FC;
}

.btn-outline:hover {
  border-color: var(--primary);
  color: #9FECFF;
  transform: translateY(-2px);
  box-shadow: 0 0 24px rgba(0, 194, 255, 0.14);
}

.btn-light {
  background: rgba(255, 255, 255, 0.92);
  color: #0B1730;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.18);
}

.btn-light:hover {
  transform: translateY(-2px);
  background: #FFFFFF;
  color: #0B1730;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.28);
}

.btn-lg {
  min-height: 52px;
  padding: 0 34px;
  font-size: 16px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 99;
  background: rgba(11, 17, 32, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #FFFFFF;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #1A2A6C);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #fff;
  box-shadow: 0 0 18px rgba(0, 194, 255, 0.28);
}

.brand-text {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #FFFFFF;
}

.brand-tag {
  font-size: 11px;
  background: rgba(0, 194, 255, 0.18);
  border-radius: 999px;
  padding: 2px 8px;
  color: var(--primary-light);
  font-weight: 500;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.topbar-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #AFC0DA;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 13px;
  transition: all 0.2s ease;
}

.topbar-link:hover {
  color: #FFFFFF;
  border-color: rgba(0, 194, 255, 0.4);
}

.menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  font-size: 18px;
}

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

.search-nav {
  padding: 12px 0;
  transition: all 0.3s ease;
}

.nav-wrapper {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 14px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: nowrap;
  min-width: 0;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  color: #A0B0C8;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
  white-space: nowrap;
}

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

.nav-link.active {
  color: var(--primary-light);
  background: rgba(0, 194, 255, 0.14);
  box-shadow: inset 0 0 0 1px rgba(0, 194, 255, 0.2);
}

.right-nav {
  justify-content: flex-end;
}

.search-box {
  display: flex;
  align-items: center;
  width: clamp(280px, 42vw, 620px);
  min-width: 240px;
  height: 46px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  padding-left: 12px;
  transition: all 0.25s ease;
  position: relative;
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary), 0 0 20px rgba(0, 194, 255, 0.35);
  background: rgba(255, 255, 255, 0.1);
}

.search-box i {
  color: var(--primary-light);
  font-size: 16px;
  flex-shrink: 0;
}

.search-box input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  color: #FFFFFF;
  font-size: 14px;
  padding: 0 12px;
  outline: none;
}

.search-box input::placeholder {
  color: #7F91AC;
}

.search-box button {
  height: 36px;
  padding: 0 20px;
  border-radius: 999px;
  border: none;
  background: linear-gradient(135deg, var(--primary), #0086D6);
  color: var(--dark-text);
  font-size: 13px;
  font-weight: 700;
  margin-right: 5px;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.search-box button:hover {
  filter: brightness(1.08);
  box-shadow: 0 0 16px rgba(0, 194, 255, 0.35);
}

/* Hero */
.hero {
  position: relative;
  padding: clamp(70px, 9vw, 108px) 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(120deg, rgba(11, 17, 32, 0.92) 0%, rgba(11, 17, 32, 0.72) 55%, rgba(9, 18, 32, 0.5) 100%),
    url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
}

.hero-bg::before,
.hero-bg::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
}

.hero-bg::before {
  width: 420px;
  height: 420px;
  background: rgba(0, 194, 255, 0.45);
  top: -120px;
  right: 60px;
}

.hero-bg::after {
  width: 340px;
  height: 340px;
  background: rgba(51, 224, 255, 0.25);
  left: -100px;
  bottom: -140px;
}

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

.hero-inner {
  display: flex;
  align-items: center;
  gap: 48px;
}

.hero-copy {
  flex: 1.05;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 13px;
  font-weight: 500;
  color: #C9E4FF;
  margin-bottom: 20px;
  backdrop-filter: blur(8px);
}

.hero-badge i {
  color: var(--primary-light);
}

.hero h1 {
  font-size: clamp(30px, 4.4vw, 48px);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
  max-width: 620px;
}

.hero-sub {
  font-size: 17px;
  line-height: 1.9;
  color: #C2D2E8;
  max-width: 620px;
  margin-bottom: 32px;
}

.hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 26px;
}

.hero-features {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 22px;
}

.hero-feature {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #B7C5DA;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  padding: 6px 14px;
}

.hero-feature i {
  color: var(--accent);
}

.hero-visual {
  flex: 0 0 420px;
  position: relative;
}

.glass-panel {
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 24px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 8px 48px rgba(0, 20, 80, 0.25);
  padding: 18px;
  transform: rotate(1.2deg);
}

.glass-panel-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.glass-panel-title {
  color: #EAF2FF;
  font-size: 14px;
  font-weight: 600;
}

.glass-online {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--accent);
  background: rgba(198, 255, 0, 0.12);
  padding: 3px 10px;
  border-radius: 999px;
}

.glass-panel img {
  width: 100%;
  height: 210px;
  border-radius: 16px;
  object-fit: cover;
}

.glass-panel-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 14px;
  font-size: 12px;
  color: #C0D2E2;
}

.float-chip {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 28, 48, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
  border-radius: 16px;
  padding: 10px 16px;
  font-size: 13px;
  color: #EAF2FF;
  backdrop-filter: blur(10px);
}

.float-chip i {
  color: var(--primary-light);
}

.chip-1 {
  top: 28px;
  left: -44px;
}

.chip-2 {
  bottom: 90px;
  right: -36px;
}

/* 痛点 */
.pain-section {
  background: linear-gradient(180deg, #0E1A30 0%, #0B1120 100%);
}

.pain-grid {
  row-gap: 24px;
}

.pain-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all 0.24s ease;
  height: 100%;
}

.pain-item:hover {
  background: var(--bg-card-strong);
  border-color: rgba(0, 194, 255, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.3);
}

.pain-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 194, 255, 0.14);
  border: 1px solid rgba(0, 194, 255, 0.18);
  font-size: 20px;
  color: var(--primary-light);
  margin-bottom: 18px;
}

.pain-item h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.pain-item p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin: 0;
}

/* 解决方案 */
.solution-inner {
  display: flex;
  align-items: center;
  gap: 60px;
}

.solution-copy {
  flex: 1;
}

.solution-media {
  flex: 0 0 46%;
}

.solution-media-inner {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.solution-media-inner img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

.solution-media-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 17, 32, 0.05) 0%, rgba(11, 17, 32, 0.92) 100%);
}

.solution-media-card {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 20px;
  background: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 18px;
  padding: 18px;
}

.solution-media-card .kicker {
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 4px;
}

.solution-media-card h4 {
  margin: 0 0 4px;
  font-size: 16px;
}

.solution-media-card p {
  margin: 0;
  font-size: 13px;
  color: #D4E0EF;
}

.feature-list {
  margin-top: 28px;
  display: grid;
  gap: 18px;
}

.feature-item {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.feature-item:last-child {
  border-bottom: none;
}

.feature-icon {
  flex: 0 0 46px;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(0, 194, 255, 0.15), rgba(0, 194, 255, 0.05));
  border: 1px solid rgba(0, 194, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-light);
  font-size: 18px;
}

.feature-text h4 {
  font-size: 17px;
  margin: 0 0 4px;
}

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

/* 数据条 */
.stats-band {
  background: linear-gradient(180deg, rgba(11, 17, 32, 0.84), rgba(11, 17, 32, 0.90)),
    url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  padding: 70px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stats-grid {
  row-gap: 32px;
}

.stat-item {
  text-align: center;
  padding: 10px;
}

.stat-num {
  font-size: clamp(36px, 4vw, 56px);
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.1;
  letter-spacing: -1px;
}

.stat-num span {
  color: var(--primary-light);
}

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

/* 用户反馈 */
.testi-shell {
  max-width: 780px;
  margin: 0 auto;
  position: relative;
}

.testi-slide {
  display: none;
  text-align: center;
  padding: 10px 20px 30px;
}

.testi-slide.active {
  display: block;
  animation: fadeSlide 0.5s ease;
}

@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.testi-quote-mark {
  width: 62px;
  height: 62px;
  border-radius: 50%;
  background: rgba(0, 194, 255, 0.16);
  border: 1px solid rgba(0, 194, 255, 0.26);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-light);
  font-size: 26px;
  margin-bottom: 18px;
}

.testi-content {
  font-size: clamp(17px, 2.2vw, 21px);
  font-weight: 500;
  color: #DCEBFF;
  line-height: 1.8;
  font-style: normal;
  margin-bottom: 24px;
}

.testi-author {
  font-size: 15px;
  color: #FFFFFF;
  font-weight: 600;
}

.testi-author span {
  display: block;
  font-size: 13px;
  font-weight: 400;
  color: var(--muted);
  margin-top: 4px;
}

.testi-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 12px;
}

.testi-arrow {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  color: #DCEBFF;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  font-size: 14px;
}

.testi-arrow:hover {
  border-color: var(--primary);
  background: rgba(0, 194, 255, 0.14);
  color: #FFFFFF;
}

.testi-dots {
  display: flex;
  align-items: center;
  gap: 8px;
}

.testi-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
  border: none;
  padding: 0;
  transition: all 0.25s ease;
}

.testi-dot.active {
  background: var(--primary-light);
  width: 28px;
  border-radius: 999px;
}

/* CTA */
.cta-band-inner {
  position: relative;
  background: linear-gradient(135deg, #13244B 0%, #0E3F6E 100%);
  border-radius: 28px;
  padding: clamp(32px, 6vw, 66px);
  text-align: center;
  overflow: hidden;
  border: 1px solid rgba(0, 194, 255, 0.24);
  box-shadow: 0 20px 70px rgba(0, 10, 40, 0.5);
}

.cta-band-inner::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(0, 194, 255, 0.2);
  filter: blur(90px);
  right: -60px;
  top: -60px;
}

.cta-band-inner h2 {
  font-size: clamp(26px, 4vw, 38px);
  margin-bottom: 8px;
  position: relative;
}

.cta-band-inner p {
  font-size: 16px;
  color: #BFD7EC;
  max-width: 660px;
  margin: 10px auto 28px;
  position: relative;
}

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

/* 资讯动态 */
.news-section {
  background: #0D1526;
}

.news-grid {
  row-gap: 28px;
}

.news-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.25s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 194, 255, 0.36);
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.32);
}

.news-thumb {
  display: block;
  width: 100%;
  height: 190px;
  overflow: hidden;
  background: linear-gradient(135deg, #15224A, #1C3A5F);
}

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

.news-card:hover .news-thumb img {
  transform: scale(1.04);
}

.news-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-cat {
  align-self: flex-start;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2px;
  background: rgba(0, 194, 255, 0.16);
  color: #8CE8FF;
  border: 1px solid rgba(0, 194, 255, 0.2);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.news-body h3 {
  font-size: 18px;
  margin: 0 0 8px;
  line-height: 1.5;
}

.news-body h3 a {
  color: #F2F6FC;
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.news-body h3 a:hover {
  color: var(--primary-light);
}

.news-summary {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.news-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 12px;
}

.news-date {
  font-size: 13px;
  color: #7D8FA8;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.news-foot .read-link {
  font-size: 13px;
  color: var(--primary-light);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.section-more {
  display: flex;
  justify-content: center;
  margin-top: 34px;
}

.empty-news {
  grid-column: 1 / -1;
  text-align: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px dashed rgba(255, 255, 255, 0.14);
  border-radius: 24px;
  padding: 52px 20px;
}

.empty-news i {
  font-size: 34px;
  color: var(--primary-light);
  margin-bottom: 12px;
}

.empty-news p {
  color: var(--muted);
  margin-bottom: 0;
}

/* FAQ */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 18px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item:hover {
  border-color: rgba(0, 194, 255, 0.3);
}

.faq-item details > summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 20px 24px;
  cursor: pointer;
  color: #E8F0FC;
  font-size: 16px;
  font-weight: 500;
}

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

.faq-icon {
  flex: 0 0 26px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(0, 194, 255, 0.18);
  border: 1px solid rgba(0, 194, 255, 0.26);
  color: var(--primary-light);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-style: normal;
  transition: transform 0.25s ease;
}

.faq-item details[open] .faq-icon {
  transform: rotate(45deg);
}

.faq-item details[open] > summary {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.faq-answer {
  background: rgba(0, 194, 255, 0.05);
  padding: 8px 24px 20px;
}

.faq-answer p {
  font-size: 15px;
  color: var(--body);
  line-height: 1.9;
  margin-bottom: 0;
}

/* 最终CTA */
.final-cta {
  background: linear-gradient(135deg, rgba(0, 194, 255, 0.08), rgba(198, 255, 0, 0.06));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: var(--space-section) 0;
}

.final-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: 34px 40px;
}

.final-cta h3 {
  font-size: clamp(22px, 3vw, 28px);
  margin-bottom: 6px;
}

.final-cta p {
  margin: 0;
  color: var(--muted);
}

/* Footer */
.site-footer {
  background: #080D1A;
  border-top: 1px solid var(--line);
  padding-top: 70px;
  padding-bottom: 30px;
}

.footer-grid {
  row-gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 14px;
  color: #8C9BB5;
  line-height: 1.9;
  margin-top: 16px;
}

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

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #9BAEC4;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.footer-links a:hover {
  color: var(--primary-light);
  transform: translateX(3px);
}

.footer-links a i {
  font-size: 10px;
  color: var(--primary);
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: #9BAEC4;
  font-size: 14px;
  margin-bottom: 14px;
}

.footer-contact i {
  color: var(--primary-light);
  margin-top: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  text-align: center;
  color: #687A94;
  font-size: 13px;
}

.footer-bottom a {
  color: #9BAEC4;
}

/* 响应式 */
@media (max-width: 1023px) {
  .hero-inner {
    flex-direction: column;
  }

  .hero-visual {
    flex: 1 1 auto;
    width: 100%;
    max-width: 520px;
    margin-top: 10px;
  }

  .float-chip {
    display: none;
  }

  .nav-wrapper {
    grid-template-columns: auto 1fr auto;
    gap: 10px;
  }

  .search-box {
    width: 100%;
  }

  .right-nav .nav-link {
    padding: 6px 9px;
    font-size: 13px;
  }

  .left-nav {
    display: none;
  }
}

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

  .topbar {
    height: 58px;
  }

  .brand-tag {
    display: none;
  }

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

  .topbar-link {
    width: 38px;
    height: 38px;
    padding: 0;
    justify-content: center;
    border-radius: 50%;
  }

  .topbar-link span {
    display: none;
  }

  .menu-btn {
    display: inline-flex;
  }

  .search-nav {
    padding: 10px 0;
  }

  .nav-wrapper {
    grid-template-columns: 1fr;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    display: none;
  }

  .nav-list a {
    justify-content: center;
    padding: 12px;
  }

  .search-nav.open .nav-list {
    display: flex;
  }

  .search-box {
    width: 100%;
    min-width: 0;
  }

  .hero {
    padding-top: 42px;
    padding-bottom: 52px;
  }

  .hero-visual {
    max-width: none;
  }

  .glass-panel img {
    height: 190px;
  }

  .btn {
    width: 100%;
  }

  .hero-btns {
    flex-direction: column;
    width: 100%;
  }

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

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

  .cta-band-inner {
    padding: 34px 16px;
    border-radius: 20px;
  }

  .final-cta-inner {
    flex-direction: column;
    text-align: center;
    padding: 28px 20px;
  }

  .news-body {
    padding: 18px;
  }

  .footer-bottom {
    font-size: 12px;
    line-height: 1.8;
  }

  .footer-bottom br {
    display: none;
  }
}

/* roulang page: category1 */
:root {
  --bg-deep: #0B1120;
  --bg-panel: rgba(255, 255, 255, 0.06);
  --bg-panel-strong: rgba(255, 255, 255, 0.09);
  --primary: #1A2A6C;
  --accent: #00C2FF;
  --accent-soft: #33E0FF;
  --lime: #C6FF00;
  --danger: #FF4D4F;
  --text-main: #FFFFFF;
  --text-body: #B9C4D6;
  --text-mute: #8896AE;
  --border-light: rgba(255, 255, 255, 0.10);
  --border-accent: rgba(0, 194, 255, 0.40);
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 22px rgba(0, 194, 255, 0.28);
  --space-section: clamp(64px, 9vw, 110px);
  --maxw: 1200px;
  --font-main: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  max-width: 100%;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg-deep);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 46px 46px;
  color: var(--text-body);
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

body.modal-open {
  overflow: hidden;
}

img {
  max-width: 100%;
}

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
.summary:focus-visible {
  outline: 3px solid rgba(0, 194, 255, 0.45);
  outline-offset: 2px;
  border-radius: 6px;
}

[id] {
  scroll-margin-top: 110px;
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(11, 17, 32, 0.88);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 14px;
  padding-bottom: 14px;
}

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

.brand-mark {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  color: #fff;
  font-size: 18px;
  box-shadow: 0 0 14px rgba(0, 194, 255, 0.28);
}

.brand-text {
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.2px;
  white-space: nowrap;
}

.brand-tag {
  padding: 3px 10px;
  border: 1px solid rgba(0, 194, 255, 0.35);
  color: var(--accent-soft);
  background: rgba(0, 194, 255, 0.10);
  font-size: 12px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.topbar-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #A0B0C8;
  font-size: 14px;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  transition: all 0.22s ease;
}

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

.menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.menu-btn:hover {
  border-color: var(--accent);
}

.search-nav {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px 0;
}

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

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 13px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  color: #A0B0C8;
  font-weight: 500;
  transition: all 0.22s ease;
  white-space: nowrap;
}

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

.nav-link.active {
  color: #fff;
  background: rgba(0, 194, 255, 0.15);
  box-shadow: inset 0 0 0 1px rgba(0, 194, 255, 0.30);
}

.search-box {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 600px;
  height: 46px;
  margin: 0 auto;
  padding: 0 6px 0 16px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: all 0.22s ease;
}

.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 194, 255, 0.12), 0 0 14px rgba(0, 194, 255, 0.14);
}

.search-box > i {
  color: var(--accent);
  font-size: 15px;
  margin-right: 8px;
  flex: 0 0 auto;
}

.search-box input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  color: #fff;
  font-size: 14px;
}

.search-box input::placeholder {
  color: rgba(255, 255, 255, 0.45);
}

.search-box input:focus {
  outline: none;
}

.search-box button {
  flex: 0 0 auto;
  height: 36px;
  padding: 0 20px;
  border: none;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--accent), var(--accent-soft));
  color: #071428;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.22s ease;
}

.search-box button:hover {
  filter: brightness(1.08);
  box-shadow: var(--shadow-glow);
}

/* ===== Category Hero ===== */
.category-hero {
  position: relative;
  padding: clamp(72px, 9vw, 120px) 0 110px;
  overflow: hidden;
  text-align: center;
}

.category-hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(11, 17, 32, 0.82), rgba(11, 17, 32, 0.95)),
    url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.category-hero::before {
  content: '';
  position: absolute;
  width: 420px;
  height: 420px;
  top: -120px;
  right: -80px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 194, 255, 0.18), transparent 70%);
  z-index: 1;
  pointer-events: none;
}

.category-hero::after {
  content: '';
  position: absolute;
  width: 480px;
  height: 480px;
  bottom: -220px;
  left: -140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26, 42, 108, 0.55), transparent 72%);
  z-index: 1;
  pointer-events: none;
}

.category-hero-inner {
  position: relative;
  z-index: 3;
  max-width: 880px;
}

.hero-meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  margin: 0 0 20px;
  background: rgba(0, 194, 255, 0.10);
  border: 1px solid rgba(0, 194, 255, 0.26);
  border-radius: var(--radius-pill);
  color: var(--accent-soft);
  font-size: 13px;
  font-weight: 500;
}

.category-hero-title {
  margin: 0 0 14px;
  color: #fff;
  font-size: clamp(30px, 4.4vw, 46px);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.category-hero-lead {
  max-width: 740px;
  margin: 0 auto;
  color: var(--text-body);
  font-size: 16px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  border: none;
  transition: all 0.22s ease;
  white-space: nowrap;
}

.btn i {
  transition: transform 0.22s ease;
}

.btn:hover i {
  transform: translateX(3px);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-soft));
  color: #0A1A3A;
  box-shadow: 0 0 16px rgba(0, 194, 255, 0.28);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 24px rgba(0, 194, 255, 0.38);
  filter: brightness(1.05);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.24);
  color: #fff;
}

.btn-outline:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 4px 18px rgba(0, 194, 255, 0.14);
}

/* ===== Quick Pill Strip ===== */
.quick-pill-strip {
  position: relative;
  z-index: 6;
  margin-top: -54px;
  padding-bottom: 10px;
}

.quick-card {
  background: rgba(15, 24, 48, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--radius-lg);
  padding: 18px 22px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.32);
}

.quick-card-label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text-mute);
  font-size: 13px;
  font-weight: 500;
  margin-right: 4px;
}

.quick-card-label i {
  color: var(--accent);
}

.pill-link {
  display: inline-flex;
  align-items: center;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: #C8D2E2;
  font-size: 13px;
  transition: all 0.22s ease;
}

.pill-link:hover {
  background: rgba(0, 194, 255, 0.12);
  border-color: rgba(0, 194, 255, 0.40);
  color: #fff;
}

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

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

.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 46px;
}

.sec-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.4px;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.sec-title {
  color: #fff;
  font-size: clamp(26px, 3.2vw, 34px);
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 14px;
}

.sec-lead {
  font-size: 16px;
  color: var(--text-body);
}

/* ===== Entry List ===== */
.entry-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.entry-row {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 30px 32px;
  border-radius: var(--radius-lg);
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  transition: all 0.25s ease;
  position: relative;
}

.entry-row:hover {
  transform: translateY(-3px);
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(0, 194, 255, 0.35);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.entry-num {
  flex: 0 0 auto;
  font-size: 46px;
  font-weight: 800;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(0, 194, 255, 0.60);
  min-width: 82px;
  text-align: center;
  transition: all 0.3s ease;
}

.entry-row:hover .entry-num {
  -webkit-text-stroke-color: var(--lime);
}

.entry-content {
  flex: 1;
  min-width: 0;
}

.entry-content h3 {
  color: #fff;
  font-size: 19px;
  font-weight: 600;
  margin: 0 0 8px;
}

.entry-content p {
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.entry-more {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  transition: all 0.22s ease;
}

.entry-more i {
  font-size: 12px;
  transition: transform 0.22s ease;
}

.entry-more:hover {
  background: rgba(0, 194, 255, 0.13);
  color: #fff;
}

.entry-more:hover i {
  transform: translateX(4px);
}

/* ===== Scene Split ===== */
.scene-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(38px, 6vw, 76px);
  align-items: center;
}

.scene-visual {
  position: relative;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(26, 42, 108, 0.5), rgba(0, 194, 255, 0.10));
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.scene-visual::before {
  content: '';
  display: block;
  padding-top: 74%;
}

.scene-visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: opacity 0.3s ease;
}

.scene-float-card {
  position: absolute;
  left: 18px;
  bottom: 18px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: rgba(11, 17, 32, 0.82);
  border: 1px solid rgba(0, 194, 255, 0.28);
  border-radius: 16px;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: #EAF6FF;
  font-size: 13px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.30);
}

.scene-float-card i {
  color: var(--lime);
  font-size: 17px;
}

.scene-content h2 {
  color: #fff;
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1.4;
  margin: 0 0 22px;
}

.scene-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.scene-list li {
  position: relative;
  padding-left: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding-bottom: 16px;
}

.scene-list li::before {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 2px;
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(0, 194, 255, 0.16);
  color: var(--accent);
  font-size: 12px;
}

.scene-list li strong {
  display: block;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.scene-list li span {
  color: var(--text-body);
  font-size: 14px;
  line-height: 1.7;
}

/* ===== Steps ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.step-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 20px;
  padding: 30px 26px;
  position: relative;
  transition: all 0.25s ease;
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 194, 255, 0.34);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.30);
}

.step-index {
  color: var(--lime);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.8px;
  margin-bottom: 12px;
}

.step-card h3 {
  color: #fff;
  font-size: 18px;
  margin: 0 0 10px;
  font-weight: 600;
}

.step-card p {
  color: var(--text-body);
  font-size: 14px;
  line-height: 1.8;
  margin: 0;
}

/* ===== FAQ ===== */
.faq-section {
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  overflow: hidden;
  transition: border-color 0.22s ease;
}

.faq-item:hover {
  border-color: rgba(0, 194, 255, 0.25);
}

.faq-summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 22px 24px;
  cursor: pointer;
  list-style: none;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  transition: background 0.22s ease;
}

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

.faq-summary:hover {
  background: rgba(255, 255, 255, 0.02);
}

.faq-icon {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(0, 194, 255, 0.12);
  color: var(--accent);
  font-size: 14px;
  transition: transform 0.25s ease;
}

.faq-item[open] .faq-icon {
  transform: rotate(45deg);
  background: rgba(0, 194, 255, 0.22);
}

.faq-body {
  padding: 0 24px 22px 64px;
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.9;
  background: rgba(0, 194, 255, 0.02);
}

.faq-body p {
  margin: 0;
}

/* ===== CTA ===== */
.cta-section {
  padding: clamp(30px, 5vw, 60px) 0 clamp(70px, 8vw, 100px);
}

.cta-card {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: clamp(44px, 7vw, 70px) 30px;
  border-radius: 28px;
  background: linear-gradient(135deg, #162A55, #1B3F88);
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.35);
}

.cta-card::before {
  content: '';
  position: absolute;
  width: 340px;
  height: 340px;
  top: -160px;
  right: -80px;
  background: radial-gradient(circle, rgba(0, 194, 255, 0.25), transparent 68%);
  border-radius: 50%;
  pointer-events: none;
}

.cta-card::after {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  bottom: -150px;
  left: -90px;
  background: radial-gradient(circle, rgba(198, 255, 0, 0.12), transparent 68%);
  border-radius: 50%;
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
}

.cta-inner h2 {
  color: #fff;
  font-size: clamp(25px, 3vw, 34px);
  line-height: 1.35;
  margin: 0 0 14px;
  font-weight: 700;
}

.cta-inner p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 16px;
  line-height: 1.8;
  margin: 0 0 28px;
}

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

/* ===== Footer ===== */
.site-footer {
  background: #070C18;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 60px;
}

.footer-grid {
  padding-bottom: 34px;
}

.footer-grid .cell {
  margin-bottom: 18px;
}

.footer-desc {
  color: var(--text-mute);
  font-size: 14px;
  line-height: 1.9;
  margin: 14px 0 0;
  max-width: 320px;
}

.footer-grid h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 18px;
  letter-spacing: 0.2px;
}

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

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text-body);
  font-size: 14px;
  transition: all 0.2s ease;
}

.footer-links a i {
  color: rgba(0, 194, 255, 0.7);
  font-size: 12px;
  transition: transform 0.2s ease;
}

.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-links a:hover i {
  color: var(--accent);
  transform: translateX(3px);
}

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

.footer-contact li i {
  color: var(--accent);
  width: 16px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 22px 0;
  text-align: center;
}

.footer-bottom p {
  color: var(--text-mute);
  font-size: 13px;
  margin: 0;
}

/* ===== Responsive ===== */
@media screen and (max-width: 1023px) {
  .nav-wrapper {
    flex-wrap: wrap;
    row-gap: 10px;
  }

  .search-box {
    order: 3;
    width: 100%;
    max-width: 100%;
  }

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

  .scene-wrap {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .entry-more {
    padding: 8px 12px;
  }
}

@media screen and (max-width: 767px) {
  .topbar-link span {
    display: none;
  }

  .topbar-link {
    padding: 8px;
  }

  .brand-tag {
    display: none;
  }

  .nav-list {
    gap: 2px;
  }
}

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

  .site-header {
    position: relative;
  }

  .topbar {
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .menu-btn {
    display: inline-flex;
  }

  #mainNav {
    display: none;
  }

  #mainNav.nav-open {
    display: block;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav-wrapper {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 16px 0;
  }

  .nav-list {
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .search-box {
    order: 0;
    width: 100%;
  }

  .category-hero {
    padding: 58px 0 96px;
  }

  .category-hero-lead {
    font-size: 15px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

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

  .quick-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px;
  }

  .quick-pill-strip {
    margin-top: -46px;
  }

  .entry-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 22px;
  }

  .entry-num {
    font-size: 34px;
    min-width: 0;
    text-align: left;
  }

  .entry-content h3 {
    font-size: 17px;
  }

  .entry-content p {
    -webkit-line-clamp: 3;
  }

  .entry-more {
    padding: 0;
  }

  .section {
    padding: 60px 0;
  }

  .section-head {
    margin-bottom: 32px;
  }

  .scene-visual::before {
    padding-top: 76%;
  }

  .scene-float-card {
    left: 10px;
    bottom: 10px;
    padding: 10px 13px;
    font-size: 12px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

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

  .faq-body {
    padding: 0 18px 18px 50px;
    font-size: 14px;
  }

  .cta-card {
    padding: 34px 20px;
    border-radius: 20px;
  }

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

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

  .footer-grid {
    padding-bottom: 10px;
  }

  .footer-bottom {
    padding: 18px 12px;
  }
}

/* roulang page: article */
:root{
  --primary:#00C2FF;
  --primary-light:#33E0FF;
  --accent:#C6FF00;
  --alert:#FF4D4F;
  --bg-deep:#0B1120;
  --bg-nav:#0E1831;
  --bg-soft:#F5F7FB;
  --card-dark:rgba(255,255,255,0.06);
  --text-white:#FFFFFF;
  --text-body:#B3C0D6;
  --text-muted:#8896AE;
  --text-soft:#98A2B3;
  --line-deep:rgba(255,255,255,0.08);
  --line-light:rgba(16,24,40,0.08);
  --shadow-card:0 4px 24px rgba(0,0,0,0.25);
  --shadow-glow:0 0 20px rgba(0,194,255,0.25);
  --radius-lg:20px;
  --radius-md:12px;
  --radius-full:999px;
  --space-section:clamp(60px,10vw,110px);
  --font-main:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-main);
  background:#0B1120;
  color:var(--text-body);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .22s ease,border .22s ease,box-shadow .22s ease,background .22s ease,transform .22s ease}
button,input,textarea{font:inherit;color:inherit}
input:focus,button:focus,a:focus,summary:focus{outline:2px solid rgba(0,194,255,.5);outline-offset:2px}
.container{max-width:1200px;margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px}
.grid-x{max-width:none}
.body-lock{overflow:hidden}

.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* Header */
.site-header{background:#0B1120;position:sticky;top:0;z-index:90;border-bottom:1px solid rgba(255,255,255,0.07);box-shadow:0 12px 36px rgba(0,0,0,0.28)}
.topbar{display:flex;align-items:center;justify-content:space-between;height:60px;gap:16px}
.brand-logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,rgba(0,194,255,.22),rgba(0,194,255,.06));
  border:1px solid rgba(0,194,255,.35);display:flex;align-items:center;justify-content:center;color:var(--primary-light);font-size:20px;
  box-shadow:0 0 18px rgba(0,194,255,.12)
}
.brand-text{font-size:19px;font-weight:700;color:var(--text-white);letter-spacing:.2px;white-space:nowrap}
.brand-tag{
  font-size:11px;padding:3px 9px;border-radius:var(--radius-full);background:rgba(198,255,0,.14);color:var(--accent);
  border:1px solid rgba(198,255,0,.25);white-space:nowrap;font-weight:500
}
.topbar-actions{display:flex;align-items:center;gap:8px}
.topbar-link{display:flex;align-items:center;gap:8px;color:var(--text-muted);font-size:14px;padding:8px 12px;border-radius:var(--radius-full)}
.topbar-link:hover{color:#fff;background:rgba(255,255,255,.06)}
.menu-btn{display:none;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);width:42px;height:42px;border-radius:12px;color:#fff;font-size:17px;cursor:pointer;align-items:center;justify-content:center}
.menu-btn:hover{border-color:var(--primary);box-shadow:0 0 14px rgba(0,194,255,.2)}

.search-nav{background:linear-gradient(180deg,rgba(0,194,255,.045),rgba(0,0,0,0) 120%);border-top:1px solid rgba(255,255,255,.04);padding:12px 0}
.nav-wrapper{display:flex;align-items:center;justify-content:center;gap:18px;position:relative}
.nav-list{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.nav-link{position:relative;color:#A0B0C8;font-size:14px;padding:8px 12px;border-radius:var(--radius-full);white-space:nowrap;border:1px solid transparent}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.05)}
.nav-link.active{color:#fff;background:rgba(0,194,255,.14);border-color:rgba(0,194,255,.18)}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 8px rgba(0,194,255,.5)}
.search-box{
  flex:0 1 620px;width:100%;display:flex;align-items:center;gap:8px;height:46px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.1);border-radius:30px;padding:0 6px 0 16px;transition:border .22s ease,box-shadow .22s ease,background .22s ease
}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 16px rgba(0,194,255,.18);background:rgba(255,255,255,.12)}
.search-box i{color:var(--primary);font-size:15px;flex:0 0 auto}
.search-box input{
  border:0;outline:0;background:transparent;flex:1 1 auto;min-width:30px;color:#fff;font-size:14px;line-height:1;
  caret-color:var(--primary)
}
.search-box input::placeholder{color:#7E8FA8}
.search-box button{
  border:0;background:linear-gradient(90deg,#00C2FF,#33E0FF);color:#041430;font-size:14px;font-weight:600;
  height:36px;border-radius:var(--radius-full);padding:0 22px;cursor:pointer;transition:box-shadow .22s ease,transform .22s ease,filter .22s ease
}
.search-box button:hover{box-shadow:0 0 18px rgba(0,194,255,.45);transform:translateY(-1px)}
.left-nav{justify-content:flex-start}
.right-nav{justify-content:flex-end}
.left-nav .nav-link,.right-nav .nav-link{font-size:13px}
.search-nav .nav-list{flex-wrap:nowrap}

/* Article Page */
.article-page{background:var(--bg-soft);color:#475467}
.article-main{padding:44px 0 64px;position:relative;background:
	radial-gradient(circle at 85% 10%,rgba(0,194,255,.09),transparent 32%),
	radial-gradient(circle at 4% 30%,rgba(198,255,0,.05),transparent 24%),
	#F5F7FB;
}
.article-layout{align-items:flex-start}
.article-shell{
	background:#fff;border-radius:var(--radius-lg);box-shadow:0 8px 32px rgba(16,24,40,.09);
	border:1px solid rgba(16,24,40,.04);overflow:hidden;margin-bottom:34px
}
.crumb{
	font-size:12px;color:var(--text-soft);padding:26px 40px 6px;display:flex;flex-wrap:wrap;gap:8px;align-items:center
}
.crumb a{color:#667085}
.crumb a:hover{color:var(--primary)}
.crumb .crumb-arrow{opacity:.6}
.crumb .current{color:#344054;font-weight:500;max-width:75vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-feature{position:relative;margin:18px 40px 0;border-radius:14px;overflow:hidden;background:linear-gradient(120deg,#D7E3F1,#F1EFEA);min-height:200px}
.article-feature img{width:100%;aspect-ratio:16/7;object-fit:cover;transition:transform .45s ease}
.article-feature:hover img{transform:scale(1.02)}
.article-heading{padding:28px 40px 18px}
.article-heading h1{
	font-size:clamp(25px,3.6vw,36px);line-height:1.25;color:#101828;font-weight:700;letter-spacing:.2px;margin-bottom:18px
}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:#667085}
.meta-chip{display:inline-flex;align-items:center;gap:7px;background:#F2F4F7;padding:5px 12px;border-radius:var(--radius-full);color:#475467}
.meta-chip i{color:var(--primary);font-size:12px}
.article-body{padding:8px 40px 32px;color:#475467;font-size:16px;line-height:1.9;overflow-wrap:break-word}
.article-body>*{max-width:100%}
.article-body p{margin:0 0 22px}
.article-body h2,.article-body h3,.article-body h4{color:#101828;margin:34px 0 14px;font-weight:700}
.article-body h2{font-size:23px;padding-left:14px;border-left:4px solid var(--primary)}
.article-body h3{font-size:19px}
.article-body h4{font-size:17px}
.article-body ul,.article-body ol{margin:0 0 24px;padding-left:26px}
.article-body ul li,.article-body ol li{margin-bottom:10px}
.article-body ul li::marker{color:var(--primary)}
.article-body a{color:var(--primary);font-weight:500;border-bottom:1px solid rgba(0,194,255,.25)}
.article-body a:hover{border-color:var(--primary)}
.article-body img{border-radius:14px;margin:12px 0 24px}
.article-body blockquote{position:relative;background:linear-gradient(135deg,rgba(0,194,255,.08),rgba(0,194,255,.02));border-left:3px solid var(--primary);border-radius:0 14px 14px 0;padding:18px 22px;margin:0 0 24px;color:#344054}
.article-body blockquote p:last-child{margin:0}
.article-body code{background:#EEF2F6;border-radius:6px;padding:2px 7px;color:#2D6A9F;font-size:14px}
.article-body pre{background:#101828;color:#D7E3F4;border-radius:14px;padding:20px;overflow-x:auto;margin:0 0 24px}
.article-body pre code{background:transparent;color:inherit;padding:0}
.article-tags{padding:0 40px 30px;display:flex;flex-wrap:wrap;gap:10px}
.article-tags span{font-size:12px;padding:6px 13px;border-radius:var(--radius-full);background:#F2F4F7;color:#475467;border:1px solid #EAECF0}
.tag-list{display:flex;gap:8px;flex-wrap:wrap}
.back-btn-row{padding:0 40px 32px;display:flex;align-items:center;justify-content:space-between;border-top:1px solid #EAECF0}
.back-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:#475467;background:#F2F4F7;padding:9px 18px;border-radius:var(--radius-full)}
.back-link i{font-size:12px}
.back-link:hover{background:#E4E7EC;color:#101828}
.back-link.primary-text{background:rgba(0,194,255,.08);color:#036B8A;font-weight:600}
.back-link.primary-text:hover{background:rgba(0,194,255,.16);color:#015E78}

/* Empty Area */
.not-found-wrap{padding:66px 20px;display:flex;justify-content:center;align-items:center;min-height:400px;background:transparent}
.not-found-card{
	background:#fff;border-radius:var(--radius-lg);box-shadow:0 12px 36px rgba(16,24,40,.1);padding:48px 40px;text-align:center;max-width:560px;width:100%
}
.not-found-card .nf-icon{width:72px;height:72px;margin:0 auto 18px;border-radius:50%;background:rgba(0,194,255,.1);display:flex;align-items:center;justify-content:center;font-size:28px;color:var(--primary)}
.not-found-card h1{font-size:24px;color:#101828;margin-bottom:12px}
.not-found-card p{color:#667085;margin-bottom:24px}
.btn-home{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(90deg,#00C2FF,#33E0FF);color:#041430;font-weight:600;padding:11px 28px;border-radius:var(--radius-full);box-shadow:0 6px 18px rgba(0,194,255,.2)}
.btn-home:hover{box-shadow:0 10px 28px rgba(0,194,255,.36);transform:translateY(-2px)}

/* Sidebar */
.article-aside{padding-top:0}
.side-card{background:#fff;border-radius:var(--radius-lg);padding:22px;margin-bottom:24px;box-shadow:0 6px 24px rgba(16,24,40,.06);border:1px solid rgba(16,24,40,.05)}
.side-card h3{font-size:16px;font-weight:700;color:#101828;margin-bottom:16px;padding-left:12px;border-left:3px solid var(--primary)}
.side-card h4{font-size:14px;font-weight:600;color:#101828;margin:14px 0 10px}
.toc-list{list-style:none;max-height:380px;overflow:auto}
.toc-list li{font-size:14px;border-bottom:1px dashed #EAECF0}
.toc-list a{display:block;padding:9px 4px;color:#475467;transition:color .2s,padding .2s}
.toc-list a:hover{color:var(--primary);padding-left:10px}
.toc-empty{color:var(--text-soft);font-size:13px;padding:8px 0}
.side-links{list-style:none}
.side-links li{margin-bottom:12px;display:flex;gap:10px;align-items:flex-start}
.side-links i{color:var(--primary);font-size:13px;line-height:1.8}
.side-links a{font-size:14px;color:#475467;line-height:1.6}
.side-links a:hover{color:var(--primary)}
.side-contact{font-size:14px;color:#475467;border-top:1px solid #EAECF0;margin-top:14px;padding-top:14px;display:grid;gap:9px}
.side-contact span{display:flex;gap:8px;align-items:center}
.side-contact i{color:var(--primary);width:16px}
.side-guide{width:100%;margin-top:14px;display:inline-flex;justify-content:center;background:rgba(0,194,255,.08);border:1px solid rgba(0,194,255,.16);color:#026E8C;font-weight:600;font-size:14px;padding:10px;border-radius:var(--radius-full)}
.side-guide:hover{background:rgba(0,194,255,.16);color:#015E78}

/* Related */
.related-section{background:#fff;padding:var(--space-section) 0;border-top:1px solid #EAECF0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:26px}
.section-title h2{font-size:clamp(24px,3vw,31px);color:#101828;font-weight:700}
.section-title p{color:#667085;margin-top:6px;font-size:14px}
.more-text{color:#026E8C;display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600}
.more-text i{font-size:12px}
.more-text:hover{color:#015E78}
.related-card{background:#fff;border:1px solid #EAECF0;border-radius:var(--radius-lg);overflow:hidden;transition:transform .22s ease,box-shadow .22s ease,border .22s ease;height:100%;display:flex;flex-direction:column}
.related-card:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(16,24,40,.12);border-color:rgba(0,194,255,.35)}
.related-cover{position:relative;overflow:hidden;background:linear-gradient(140deg,#EAF0F6,#DDE7F0);aspect-ratio:16/9}
.related-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.related-card:hover .related-cover img{transform:scale(1.04)}
.related-tag{position:absolute;left:14px;top:14px;background:rgba(20,30,60,.75);backdrop-filter:blur(6px);color:#fff;font-size:11px;padding:5px 12px;border-radius:var(--radius-full)}
.related-body{padding:20px 20px 18px;flex:1;display:flex;flex-direction:column}
.related-body h3{font-size:16px;font-weight:600;line-height:1.5;color:#101828;margin-bottom:10px}
.related-body h3 a:hover{color:var(--primary)}
.related-body p{font-size:13px;color:#667085;line-height:1.7;flex:1;margin-bottom:16px}
.related-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#98A2B3}
.related-meta span{display:inline-flex;align-items:center;gap:6px}
.related-meta .go-link{color:var(--primary);font-weight:600}
.related-meta .go-link:hover{color:#015E78}

/* FAQ */
.faq-section{padding:var(--space-section) 0;background:#F5F7FB}
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid #EAECF0;border-radius:16px;margin-bottom:14px;overflow:hidden;transition:border .2s ease,box-shadow .2s ease}
.faq-item[open]{box-shadow:0 10px 30px rgba(16,24,40,.08);border-color:rgba(0,194,255,.45)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:17px 20px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-q{display:flex;align-items:center;gap:12px;font-weight:600;color:#101828;font-size:15px}
.faq-q i{width:30px;height:30px;flex:0 0 30px;border-radius:50%;background:rgba(0,194,255,.1);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:14px}
.faq-item .plus{flex:0 0 20px;height:20px;width:20px;display:flex;align-items:center;justify-content:center;color:#98A2B3;font-size:14px;transition:transform .28s ease;background:#F2F4F7;border-radius:50%}
.faq-item[open] .plus{transform:rotate(135deg);background:rgba(0,194,255,.12);color:var(--primary)}
.faq-a{padding:0 20px 20px 62px;color:#667085;font-size:14px;line-height:1.8}
.faq-a p{margin-bottom:10px}
.faq-a p:last-child{margin-bottom:0}

/* CTA */
.cta-section{padding:70px 0;background:#0B1120;position:relative;overflow:hidden}
.cta-banner{
	border-radius:24px;position:relative;padding:clamp(38px,5vw,64px) clamp(24px,4vw,70px);text-align:center;
	background:linear-gradient(118deg,rgba(0,194,255,.26),rgba(13,23,52,.9)),url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
	border:1px solid rgba(255,255,255,.12);box-shadow:0 18px 50px rgba(0,0,0,.28);overflow:hidden
}
.cta-banner::before{content:"";position:absolute;inset:auto -100px -130px auto;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(198,255,0,.15),transparent 65%);pointer-events:none}
.cta-banner h2{color:#fff;font-size:clamp(24px,3.4vw,34px);font-weight:700;line-height:1.3;margin-bottom:14px}
.cta-banner p{color:#B3C0D6;max-width:620px;margin:0 auto 26px;font-size:15px}
.cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;position:relative;z-index:2}
.btn-primary{display:inline-flex;align-items:center;gap:9px;background:linear-gradient(90deg,#00C2FF,#33E0FF);color:#041430;padding:12px 30px;border-radius:var(--radius-full);font-weight:600;border:1px solid rgba(255,255,255,.2);box-shadow:0 0 16px rgba(0,194,255,.18);transition:transform .22s,box-shadow .22s,filter .22s}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 28px rgba(0,194,255,.45);filter:brightness(1.05)}
.btn-ghost{display:inline-flex;align-items:center;gap:9px;color:#fff;padding:12px 28px;border-radius:var(--radius-full);border:1px solid rgba(255,255,255,.35);font-weight:500;background:rgba(255,255,255,.04);backdrop-filter:blur(6px)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
/* Footer */
.site-footer{background:#0A0F1E;border-top:1px solid rgba(255,255,255,.06);padding:58px 0 20px;color:#8896AE}
.site-footer .brand-text{font-size:17px}
.footer-grid{margin-bottom:20px}
.footer-grid .cell{padding-bottom:34px}
.footer-desc{font-size:13px;line-height:1.9;color:#8896AE;margin:14px 0 0;max-width:280px}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.footer-links{list-style:none;font-size:13px}
.footer-links li{margin-bottom:10px;display:flex;gap:8px}
.footer-links a{display:inline-flex;align-items:center;gap:6px;color:#8896AE}
.footer-links a i{font-size:10px;color:var(--primary)}
.footer-links a:hover{color:#fff;padding-left:2px}
.footer-contact li{gap:10px}
.footer-contact i{color:var(--primary);width:15px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:18px;text-align:center;font-size:12px;color:#8896AE}
.footer-bottom p{margin:0;line-height:1.8}

@media (min-width:1024px){
	.article-layout .cell.large-1{min-height:1px}
	.article-aside{padding-left:16px}
}
@media (max-width:1023px){
	.article-main{padding:30px 0 52px}
	.article-shell{margin-bottom:20px}
	.section-title h2{font-size:26px}
	.search-box{flex-basis:520px}
}
@media (max-width:767px){
	.container{padding-left:18px;padding-right:18px}
	.topbar{height:auto;padding:10px 0}
	.brand-text{font-size:16px}
	.brand-tag{display:none}
	.topbar-link span{display:none}
	.topbar-link{padding:8px}
	.menu-btn{display:inline-flex}
	.search-nav{padding:0 0 14px}
	.nav-wrapper{display:flex;flex-wrap:wrap;gap:0;justify-content:center}
	.search-box{order:1;flex-basis:100%;max-width:100%;width:100%}
	.nav-list{display:none;order:2;width:100%;flex-wrap:wrap;justify-content:center;gap:4px;padding-top:10px}
	.search-nav.open-mobile .nav-list{display:flex}
	.search-nav.open-mobile .search-box{box-shadow:0 0 0 1px rgba(0,194,255,.5)}
	.crumb{padding:20px 20px 5px}
	.article-feature{margin:15px 18px 0}
	.article-heading{padding:22px 20px 16px;gap:0}
	.article-heading h1{font-size:26px}
	.article-body{padding:6px 20px 24px;font-size:15px}
	.article-tags{padding:0 20px 24px}
	.back-btn-row{padding:0 20px 26px;flex-wrap:wrap;gap:10px}
	.section-head{align-items:flex-start;flex-direction:column;gap:10px;margin-bottom:20px}
	.related-section,.faq-section,#ctaSection{padding:46px 0}
	.cta-banner{padding:30px 20px}
	.faq-a{padding:0 18px 18px 18px}
	.article-aside{padding-top:0}
	.footer-grid{padding-left:8px;padding-right:8px}
}
@media (max-width:520px){
	.article-feature img{aspect-ratio:16/8}
	.article-meta{gap:8px}
	.meta-chip{width:calc(50% - 6px);justify-content:center}
	.not-found-card{padding:32px 18px}
	.related-card h3{font-size:15px}
	.cta-btns .btn-primary,.cta-btns .btn-ghost{width:100%;justify-content:center}
	.footer-bottom{font-size:11px}
}

/* roulang page: category2 */
:root{
  --bg-900:#0B1120;
  --bg-800:#101A32;
  --bg-soft:#131D3A;
  --primary:#00C2FF;
  --primary-light:#33E0FF;
  --accent:#C6FF00;
  --text-head:#FFFFFF;
  --text-body:#B3C0D6;
  --text-muted:#8896AE;
  --line-soft:rgba(255,255,255,0.10);
  --line-main:rgba(0,194,255,0.30);
  --radius-lg:20px;
  --radius-md:12px;
  --radius-pill:999px;
  --shadow-card:0 4px 24px rgba(0,0,0,0.25);
  --shadow-glow:0 0 22px rgba(0,194,255,0.25);
  --space-x:24px;
  --space-mobile:16px;
}

*{
  box-sizing:border-box;
  margin:0;
  padding:0;
}
html{
  scroll-behavior:smooth;
}
body{
  background:var(--bg-900);
  color:var(--text-body);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Inter",sans-serif;
  font-size:15px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{
  max-width:100%;
  display:block;
  object-fit:cover;
}
a{
  color:inherit;
  text-decoration:none;
}
button{
  font-family:inherit;
  cursor:pointer;
}
.container{
  max-width:1200px;
  margin:0 auto;
  padding-left:var(--space-x);
  padding-right:var(--space-x);
}
.grid-x{
  margin-left:-12px;
  margin-right:-12px;
}
.cell{
  padding-left:12px;
  padding-right:12px;
}
.section-block{
  padding:clamp(60px,8vw,110px) 0;
}
.section-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--primary-light);
  font-size:13px;
  font-weight:500;
  letter-spacing:0.3px;
  background:rgba(0,194,255,0.10);
  border:1px solid rgba(0,194,255,0.22);
  padding:6px 16px;
  border-radius:var(--radius-pill);
  margin-bottom:18px;
}
.section-title{
  color:var(--text-head);
  font-size:clamp(24px,4vw,34px);
  font-weight:700;
  line-height:1.3;
  letter-spacing:0.2px;
}
.section-desc{
  margin-top:16px;
  max-width:760px;
  color:var(--text-muted);
  font-size:16px;
}

/* ============ Header ============ */
.site-header{
  background:var(--bg-900);
  border-bottom:1px solid var(--line-soft);
  position:sticky;
  top:0;
  z-index:99;
  backdrop-filter:blur(10px);
}
.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:64px;
  gap:12px;
}
.brand-logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-width:0;
}
.brand-mark{
  width:40px;
  height:40px;
  border-radius:12px;
  display:grid;
  place-items:center;
  background:linear-gradient(135deg,#00C2FF 0%,#1A2A6C 100%);
  color:#fff;
  font-size:20px;
  box-shadow:0 0 18px rgba(0,194,255,0.18);
  flex:0 0 auto;
}
.brand-text{
  color:#fff;
  font-size:18px;
  font-weight:700;
  white-space:nowrap;
  letter-spacing:0.2px;
}
.brand-tag{
  display:inline-block;
  color:var(--primary-light);
  background:rgba(0,194,255,0.14);
  border:1px solid rgba(0,194,255,0.25);
  padding:2px 10px;
  font-size:12px;
  border-radius:var(--radius-pill);
  white-space:nowrap;
}
.topbar-actions{
  display:flex;
  align-items:center;
  gap:16px;
}
.topbar-link{
  display:inline-flex;
  align-items:center;
  gap:7px;
  color:var(--text-body);
  font-size:14px;
  transition:color 0.2s ease;
}
.topbar-link:hover,
.topbar-link:focus-visible{
  color:#fff;
  outline:none;
}
.menu-btn{
  display:none;
  background:rgba(255,255,255,0.06);
  border:1px solid var(--line-soft);
  color:#fff;
  width:42px;
  height:38px;
  border-radius:10px;
  font-size:19px;
  align-items:center;
  justify-content:center;
}
.search-nav{
  background:rgba(19,29,58,0.72);
  border-top:1px solid rgba(255,255,255,0.06);
}
.nav-wrapper{
  display:flex;
  align-items:center;
  gap:14px;
  padding:14px 0;
  min-height:76px;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:nowrap;
}
.nav-list a{
  color:#A0B0C8;
  font-size:14px;
  line-height:1.4;
  padding:6px 6px;
  white-space:nowrap;
  border-bottom:2px solid transparent;
  transition:color 0.22s ease,border-color 0.22s ease;
}
.nav-list a:hover,
.nav-list a:focus-visible{
  color:#fff;
  outline:none;
}
.nav-list a.active{
  color:#fff;
  border-bottom-color:var(--primary);
}
.left-nav{
  justify-content:flex-start;
}
.search-box{
  flex:1;
  max-width:620px;
  height:48px;
  display:flex;
  align-items:center;
  background:rgba(255,255,255,0.08);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:var(--radius-pill);
  padding:0 6px 0 18px;
  transition:border-color 0.22s ease,box-shadow 0.22s ease;
}
.search-box:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 1px rgba(0,194,255,0.35),0 0 14px rgba(0,194,255,0.22);
}
.search-box i{
  color:var(--primary);
  font-size:15px;
  margin-right:10px;
}
.search-box input{
  flex:1;
  min-width:0;
  background:transparent;
  border:0;
  color:rgba(255,255,255,0.9);
  font-size:14px;
  height:46px;
  outline:none;
}
.search-box input::placeholder{
  color:var(--text-muted);
}
.search-box button{
  height:38px;
  padding:0 24px;
  border-radius:var(--radius-pill);
  background:linear-gradient(135deg,#00C2FF,#33E0FF);
  color:#001830;
  font-weight:600;
  border:0;
  font-size:14px;
  transition:box-shadow 0.22s ease,transform 0.22s ease;
  box-shadow:0 0 12px rgba(0,194,255,0.25);
}
.search-box button:hover{
  box-shadow:0 0 20px rgba(51,224,255,0.5);
  transform:translateY(-1px);
}
.right-nav{
  justify-content:flex-end;
}

/* ============ Hero ============ */
.hero-section{
  position:relative;
  padding:clamp(50px,7vw,90px) 0 clamp(40px,6vw,70px);
  overflow:hidden;
  isolation:isolate;
  border-bottom:1px solid rgba(255,255,255,0.05);
}
.hero-bg{
  position:absolute;
  inset:0;
  z-index:-2;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center 20%;
}
.hero-bg:after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(11,17,32,0.97) 0%,rgba(11,17,32,0.86) 55%,rgba(11,17,32,0.42) 100%);
}
.hero-grid-lines{
  position:absolute;
  inset:0;
  z-index:-1;
  background-image:linear-gradient(rgba(255,255,255,0.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,0.035) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:linear-gradient(to bottom,black,transparent 80%);
}
.hero-content{
  display:flex;
  align-items:center;
  gap:48px;
}
.hero-copy{
  flex:1 1 55%;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(196,255,0,0.1);
  color:var(--accent);
  border:1px solid rgba(196,255,0,0.2);
  font-size:13px;
  border-radius:var(--radius-pill);
  padding:5px 14px;
  margin-bottom:24px;
}
.hero-copy h1{
  color:#fff;
  font-size:clamp(30px,4.6vw,44px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:0.2px;
}
.hero-copy h1 span{
  color:var(--primary-light);
}
.hero-sub{
  color:rgba(209,221,240,0.9);
  font-size:17px;
  line-height:1.9;
  margin-top:20px;
  max-width:580px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin-top:30px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:14px 28px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:all 0.22s ease;
}
.btn-primary{
  background:linear-gradient(135deg,#00C2FF,#33E0FF);
  color:#001b36;
  box-shadow:0 0 16px rgba(0,194,255,0.3);
}
.btn-primary:hover{
  box-shadow:0 0 30px rgba(51,224,255,0.48);
  transform:translateY(-2px);
}
.btn-ghost{
  background:rgba(255,255,255,0.06);
  border-color:rgba(255,255,255,0.2);
  color:#fff;
}
.btn-ghost:hover{
  border-color:rgba(0,194,255,0.55);
  background:rgba(0,194,255,0.1);
  transform:translateY(-2px);
}
.hero-visual{
  flex:0 1 42%;
  min-width:330px;
  position:relative;
}
.browser-frame{
  position:relative;
  border-radius:18px;
  border:1px solid rgba(255,255,255,0.18);
  background:rgba(255,255,255,0.08);
  box-shadow:0 18px 50px rgba(0,0,0,0.35),inset 0 0 0 1px rgba(255,255,255,0.05);
  overflow:hidden;
  backdrop-filter:blur(8px);
}
.browser-topbar{
  display:flex;
  align-items:center;
  gap:8px;
  padding:12px 16px;
  background:rgba(255,255,255,0.07);
  border-bottom:1px solid rgba(255,255,255,0.09);
}
.browser-dot{
  width:10px;
  height:10px;
  border-radius:50%;
  background:rgba(255,255,255,0.3);
}
.browser-dot:first-child{background:#FF5F57}
.browser-dot:nth-child(2){background:#FEBC2E}
.browser-dot:nth-child(3){background:#29C940}
.browser-address{
  margin-left:12px;
  flex:1;
  height:28px;
  border-radius:8px;
  background:rgba(255,255,255,0.1);
  display:flex;
  align-items:center;
  padding:0 12px;
  color:var(--text-muted);
  font-size:12px;
}
.browser-shot{
  aspect-ratio:16 / 9;
  background:#182440;
  overflow:hidden;
}
.browser-shot img{
  width:100%;
  height:100%;
}
.hero-float-card{
  position:absolute;
  background:rgba(19,29,58,0.82);
  border:1px solid rgba(0,194,255,0.3);
  color:#E6F6FF;
  font-size:12px;
  border-radius:14px;
  padding:12px 16px;
  backdrop-filter:blur(8px);
  box-shadow:0 10px 30px rgba(0,0,0,0.3);
  width:150px;
}
.hero-float-card i{
  color:var(--primary);
  margin-right:7px;
}
.float-one{
  top:-18px;
  left:-24px;
}
.float-two{
  right:-20px;
  bottom:-18px;
  color:#DFFFB0;
  border-color:rgba(196,255,0,0.3);
}
.float-two i{
  color:var(--accent);
}

/* ============ Quick nav pills ============ */
.quick-nav{
  margin-top:-24px;
  position:relative;
  padding-bottom:20px;
}
.pills-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  align-items:center;
}
.pill{
  display:inline-flex;
  align-items:center;
  gap:7px;
  background:rgba(255,255,255,0.06);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-pill);
  padding:9px 18px;
  color:#CDD8EA;
  font-size:14px;
  transition:all 0.22s ease;
}
.pill:hover{
  background:rgba(0,194,255,0.12);
  border-color:rgba(0,194,255,0.45);
  color:#fff;
  transform:translateY(-1px);
}
.pill i{
  color:var(--primary);
  font-size:13px;
}

/* ============ Login environment section ============ */
.environment-section{
  position:relative;
}
.env-panel{
  display:flex;
  align-items:center;
  gap:50px;
}
.env-text{
  flex:1 1 46%;
}
.env-list{
  flex:1 1 48%;
}
.env-item{
  display:flex;
  gap:16px;
  padding:20px 0;
  border-bottom:1px solid rgba(255,255,255,0.07);
}
.env-item:last-child{
  border-bottom:0;
}
.env-icon{
  width:44px;
  height:44px;
  flex:0 0 44px;
  border-radius:12px;
  display:grid;
  place-items:center;
  font-size:18px;
  background:rgba(0,194,255,0.12);
  border:1px solid rgba(0,194,255,0.22);
  color:var(--primary-light);
}
.env-item h3{
  color:#fff;
  font-size:16px;
  font-weight:600;
  margin-bottom:4px;
}
.env-item p{
  color:var(--text-muted);
  font-size:14px;
  line-height:1.7;
}
.btn-outline{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:22px;
  border:1px solid rgba(0,194,255,0.35);
  color:var(--primary-light);
  padding:10px 22px;
  border-radius:var(--radius-pill);
  font-size:14px;
  transition:all 0.22s ease;
}
.btn-outline:hover{
  background:rgba(0,194,255,0.12);
  border-color:var(--primary);
  color:#fff;
  transform:translateY(-1px);
}

/* ============ Steps ============ */
.steps-section{
  background:var(--bg-800);
  border-top:1px solid rgba(255,255,255,0.05);
  border-bottom:1px solid rgba(255,255,255,0.05);
}
.steps-grid{
  margin-top:46px;
}
.step-item{
  position:relative;
  background:rgba(255,255,255,0.05);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-lg);
  padding:28px 24px 24px;
  height:100%;
  min-height:190px;
  transition:transform 0.22s ease,box-shadow 0.22s ease,border-color 0.22s ease;
}
.step-item:hover{
  transform:translateY(-3px);
  border-color:rgba(0,194,255,0.35);
  box-shadow:0 16px 40px rgba(0,0,0,0.25);
}
.step-num{
  font-size:34px;
  font-weight:700;
  color:transparent;
  -webkit-text-stroke:1px rgba(0,194,255,0.7);
  line-height:1;
}
.step-item h3{
  color:#fff;
  font-size:18px;
  font-weight:600;
  margin-top:16px;
  margin-bottom:6px;
}
.step-item p{
  color:var(--text-muted);
  font-size:14px;
  line-height:1.8;
}
.step-line{
  display:none;
}
@media(min-width:1024px){
  .step-line{
    display:block;
    position:absolute;
    top:148px;
    right:-24px;
    width:24px;
    height:1px;
    background:linear-gradient(to right,rgba(0,194,255,0.6),rgba(0,194,255,0.1));
  }
}

/* ============ Numbered list rows ============ */
.topics-section{
  background:linear-gradient(180deg,rgba(19,29,58,0.3) 0%,rgba(11,17,32,1) 100%);
}
.topic-list{
  margin-top:42px;
  border-top:1px solid rgba(255,255,255,0.07);
}
.topic-row{
  display:flex;
  align-items:center;
  gap:24px;
  padding:26px 20px;
  border-bottom:1px solid rgba(255,255,255,0.07);
  background:rgba(255,255,255,0.02);
  border-radius:12px;
  margin-bottom:10px;
  transition:background 0.22s ease,border-color 0.22s ease,transform 0.22s ease;
}
.topic-row:hover{
  background:rgba(0,194,255,0.07);
  transform:translateX(4px);
  border-color:rgba(0,194,255,0.18);
}
.topic-index{
  font-size:26px;
  font-weight:700;
  color:var(--primary);
  opacity:0.55;
  line-height:1;
  flex:0 0 54px;
  letter-spacing:0.3px;
}
.topic-main{
  flex:1;
}
.topic-main h3{
  color:#fff;
  font-size:18px;
  font-weight:600;
  margin-bottom:6px;
}
.topic-main p{
  color:var(--text-muted);
  font-size:14px;
  max-width:760px;
  line-height:1.7;
}
.topic-more{
  color:var(--primary-light);
  font-size:14px;
  white-space:nowrap;
  padding:8px 14px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(0,194,255,0.22);
  transition:all 0.22s ease;
}
.topic-more i{
  margin-left:5px;
  font-size:12px;
}
.topic-more:hover{
  background:rgba(0,194,255,0.14);
  color:#fff;
  border-color:var(--primary);
}

/* ============ Support / contact ============ */
.support-section{
  background:var(--bg-800);
  border-top:1px solid rgba(255,255,255,0.05);
  border-bottom:1px solid rgba(255,255,255,0.05);
  position:relative;
  overflow:hidden;
}
.support-card{
  background:rgba(255,255,255,0.06);
  border:1px solid var(--line-soft);
  border-radius:20px;
  padding:28px;
  height:100%;
  backdrop-filter:blur(6px);
}
.support-icon{
  width:46px;
  height:46px;
  border-radius:12px;
  background:linear-gradient(135deg,rgba(0,194,255,0.2),rgba(0,194,255,0.02));
  border:1px solid rgba(0,194,255,0.2);
  color:var(--primary-light);
  display:grid;
  place-items:center;
  font-size:20px;
  margin-bottom:16px;
}
.support-card h3{
  color:#fff;
  font-size:17px;
  font-weight:600;
  margin-bottom:10px;
}
.support-card p{
  color:var(--text-muted);
  font-size:14px;
}
.support-list{
  list-style:none;
  margin:14px 0 0;
}
.support-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding:7px 0;
  font-size:14px;
  color:#BCCAE0;
}
.support-list li i{
  color:var(--accent);
  margin-top:5px;
  font-size:13px;
}
.support-img{
  border-radius:16px;
  overflow:hidden;
  margin-top:18px;
  border:1px solid rgba(255,255,255,0.12);
}
.support-img img{
  width:100%;
  height:160px;
}
.contact-item{
  display:flex;
  align-items:center;
  gap:14px;
  padding:15px 0;
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.contact-item:last-child{
  border-bottom:0;
}
.contact-item i{
  width:38px;
  height:38px;
  border-radius:10px;
  background:rgba(0,194,255,0.08);
  border:1px solid rgba(0,194,255,0.16);
  display:grid;
  place-items:center;
  color:var(--primary-light);
  font-size:16px;
  flex:0 0 38px;
}
.contact-item strong{
  color:#fff;
  font-weight:600;
  font-size:14px;
  display:block;
}
.contact-item span{
  color:var(--text-muted);
  font-size:13px;
}

/* ============ FAQ ============ */
.faq-wrap{
  max-width:880px;
  margin:36px auto 0;
}
.faq-item{
  margin-bottom:14px;
  border-radius:16px;
  background:rgba(255,255,255,0.04);
  border:1px solid var(--line-soft);
  overflow:hidden;
  transition:border-color 0.22s ease,background 0.22s ease;
}
.faq-item.open{
  background:rgba(0,194,255,0.06);
  border-color:rgba(0,194,255,0.28);
}
.faq-question{
  width:100%;
  background:transparent;
  border:0;
  display:flex;
  align-items:center;
  gap:14px;
  text-align:left;
  padding:20px 22px;
  color:#EAF2FF;
  font-size:16px;
  font-weight:500;
  transition:color 0.2s ease;
}
.faq-question:hover,
.faq-question:focus-visible{
  color:#fff;
  outline:none;
}
.faq-q-icon{
  width:24px;
  height:24px;
  flex:0 0 24px;
  border-radius:50%;
  background:rgba(0,194,255,0.18);
  color:var(--primary-light);
  display:grid;
  place-items:center;
  font-size:13px;
}
.faq-plus{
  margin-left:auto;
  color:var(--primary-light);
  transition:transform 0.3s ease;
}
.faq-item.open .faq-plus{
  transform:rotate(135deg);
  color:var(--accent);
}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height 0.35s ease,padding 0.2s ease;
  padding:0 22px;
  color:#B6C5DE;
  font-size:14px;
  line-height:1.9;
}
.faq-item.open .faq-answer{
  max-height:400px;
  padding:0 22px 20px;
}

/* ============ CTA ============ */
.cta-section{
  padding-bottom:clamp(70px,9vw,120px);
}
.cta-box{
  position:relative;
  background:
    radial-gradient(circle at 15% 20%,rgba(0,194,255,0.16),transparent 45%),
    radial-gradient(circle at 82% 60%,rgba(196,255,0,0.1),transparent 42%),
    var(--bg-800);
  border:1px solid rgba(0,194,255,0.27);
  border-radius:24px;
  padding:clamp(40px,6vw,70px) 24px;
  text-align:center;
  overflow:hidden;
}
.cta-box h2{
  color:#fff;
  font-size:clamp(24px,4vw,34px);
  line-height:1.4;
  font-weight:700;
}
.cta-box p{
  color:#B6C5DE;
  max-width:620px;
  margin:14px auto 0;
  font-size:16px;
}
.cta-buttons{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:16px;
  margin-top:30px;
}
.btn-accent{
  background:linear-gradient(135deg,#C6FF00,#A4E400);
  color:#253500;
  font-weight:700;
  box-shadow:0 0 16px rgba(196,255,0,0.22);
}
.btn-accent:hover{
  box-shadow:0 0 28px rgba(196,255,0,0.4);
  transform:translateY(-2px);
}
.cta-note{
  margin-top:16px;
  color:var(--text-muted);
  font-size:13px;
}

/* ============ Footer ============ */
.site-footer{
  background:#0A0F1B;
  border-top:1px solid rgba(255,255,255,0.07);
  padding-top:64px;
}
.footer-grid{
  padding-bottom:34px;
}
.footer-grid h4{
  color:#fff;
  font-size:16px;
  font-weight:600;
  margin:10px 0 18px;
}
.footer-desc{
  color:#8896AE;
  font-size:13px;
  line-height:1.8;
  margin-top:16px;
  max-width:280px;
}
.footer-links{
  list-style:none;
  margin:0;
}
.footer-links li{
  margin-bottom:10px;
}
.footer-links a{
  color:#8896AE;
  font-size:14px;
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:color 0.2s ease,padding-left 0.2s ease;
}
.footer-links a:hover{
  color:var(--primary-light);
  padding-left:3px;
}
.footer-links i{
  color:var(--primary);
  font-size:12px;
}
.footer-contact li{
  color:#8896AE;
  font-size:13px;
  list-style:none;
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:12px;
}
.footer-contact i{
  color:var(--primary);
  width:16px;
  text-align:center;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.07);
  padding:22px 0;
  text-align:center;
}
.footer-bottom p{
  color:#667085;
  font-size:13px;
  margin:0;
}

/* ============ Responsive ============ */
@media(max-width:1023px){
  .nav-wrapper{
    flex-wrap:wrap;
    gap:10px;
  }
  .left-nav{
    flex:1 1 auto;
  }
  .right-nav{
    flex:1 1 auto;
  }
  .search-box{
    order:-1;
    flex:1 1 100%;
    max-width:100%;
  }
  .hero-content{
    flex-wrap:wrap;
  }
  .hero-copy{
    flex:1 1 100%;
  }
  .hero-visual{
    flex:1 1 100%;
    min-width:0;
  }
  .float-one{
    left:-4px;
    top:-14px;
  }
  .float-two{
    right:-4px;
    bottom:-14px;
  }
  .env-panel{
    flex-wrap:wrap;
  }
  .env-text,
  .env-list{
    flex:1 1 100%;
  }
}
@media(max-width:639px){
  :root{
    --space-x:16px;
  }
  .brand-text{
    font-size:16px;
  }
  .brand-tag{
    display:none;
  }
  .topbar-link span{
    display:none;
  }
  .menu-btn{
    display:inline-flex;
  }
  .search-nav{
    display:none;
  }
  .search-nav.open{
    display:block;
  }
  .nav-wrapper{
    flex-direction:column;
    align-items:stretch;
    padding:14px 0 18px;
    gap:6px;
  }
  .nav-list{
    flex-wrap:wrap;
    justify-content:flex-start;
    padding:4px 0;
  }
  .nav-list a{
    padding:6px 8px;
  }
  .search-box{
    order:0;
    height:46px;
    margin-bottom:8px;
  }
  .search-box button{
    padding:0 18px;
  }
  .hero-sub{
    font-size:15px;
  }
  .hero-actions .btn{
    width:100%;
  }
  .step-item{
    min-height:0;
  }
  .topic-row{
    flex-wrap:wrap;
    gap:12px;
    padding:20px 10px;
  }
  .topic-index{
    flex-basis:100%;
    font-size:21px;
  }
  .topic-main h3{
    font-size:16px;
  }
  .topic-more{
    margin-left:0;
  }
  .cta-buttons .btn{
    width:100%;
  }
  .support-card{
    margin-bottom:16px;
  }
  .faq-question{
    font-size:15px;
    padding:18px 14px;
  }
  .faq-answer{
    padding:0 14px;
  }
  .faq-item.open .faq-answer{
    padding:0 14px 16px;
  }
}

/* roulang page: category3 */
:root {
  --bg:#0B1120;
  --bg-deep:#070C18;
  --bg-soft:#101A30;
  --panel:rgba(255,255,255,.06);
  --panel-hover:rgba(255,255,255,.10);
  --primary:#1A2A6C;
  --deep:#131D3A;
  --accent:#00C2FF;
  --accent-soft:#33E0FF;
  --lime:#C6FF00;
  --white:#FFFFFF;
  --title:#FFFFFF;
  --body:#B3C0D6;
  --muted:#8896AE;
  --disabled:#667085;
  --border:rgba(255,255,255,.10);
  --border-strong:rgba(255,255,255,.18);
  --danger:#FF4D4F;
  --r-lg:20px;
  --r-md:12px;
  --r-sm:8px;
  --shadow-lg:0 20px 60px rgba(0,0,0,.35);
  --shadow-card:0 4px 24px rgba(0,0,0,.25);
  --shadow-glow:0 0 26px rgba(0,194,255,.28);
  --font: 'PingFang SC','Microsoft YaHei','Source Han Sans SC',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --space-section:clamp(64px,10vw,112px);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.8;color:var(--body);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none;transition:color .22s ease}
img{max-width:100%;display:block}
button,input,textarea{font-family:inherit;font-size:1rem;color:inherit}
button{cursor:pointer}
.container{width:min(1200px,calc(100% - 48px));margin-left:auto;margin-right:auto}
.util-relative{position:relative}
.page-section{padding-top:var(--space-section);padding-bottom:var(--space-section)}
.section-head{max-width:820px;margin-bottom:36px}
.overline{font-size:14px;letter-spacing:2px;color:var(--accent);margin-bottom:10px;font-weight:600}
.section-title{color:var(--title);font-size:clamp(26px,4vw,36px);line-height:1.3;font-weight:700;margin-bottom:14px}
.section-text{font-size:16px;color:var(--body);max-width:920px;line-height:1.9}
.section-white{background:var(--bg-deep)}

::selection{background:rgba(0,194,255,.3);color:#fff}

.site-header{position:sticky;top:0;z-index:120;background:rgba(9,14,28,.92);backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.07)}
.topbar{display:flex;align-items:center;justify-content:space-between;min-height:62px;gap:20px}
.brand-logo{display:inline-flex;align-items:center;gap:10px}
.brand-mark{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;color:var(--bg);background:linear-gradient(135deg,var(--accent),var(--accent-soft));box-shadow:0 0 14px rgba(0,194,255,.25);font-size:20px}
.brand-text{color:#fff;font-size:19px;font-weight:700;letter-spacing:.2px;white-space:nowrap}
.brand-tag{color:var(--muted);font-size:12px;border:1px solid var(--border);padding:3px 10px;border-radius:999px;margin-left:2px;white-space:nowrap}
.topbar-actions{display:flex;align-items:center;gap:12px}
.topbar-link{display:inline-flex;align-items:center;gap:8px;color:var(--body);font-size:14px;padding:9px 14px;border:1px solid var(--border);border-radius:999px;transition:.22s}
.topbar-link:hover{color:#fff;border-color:rgba(255,255,255,.3);transform:translateY(-1px)}
.menu-btn{display:none;width:42px;height:42px;align-items:center;justify-content:center;border-radius:12px;border:1px solid var(--border);background:var(--panel);color:#fff;font-size:18px}

.search-nav{border-top:1px solid rgba(255,255,255,.06)}
.nav-wrapper{display:flex;align-items:center;gap:12px;min-height:70px}
.nav-list{display:flex;align-items:center;gap:4px;white-space:nowrap}
.nav-list a{display:inline-flex;align-items:center;padding:7px 12px;border-radius:999px;font-size:14px;color:#A0B0C8;transition:.22s}
.nav-list a:hover{color:#fff;background:rgba(255,255,255,.07)}
.nav-list a.active{color:#fff;background:rgba(0,194,255,.16);outline:1px solid rgba(0,194,255,.35)}
.search-box{flex:1;max-width:570px;margin:0 8px;display:flex;align-items:center;gap:4px;height:46px;padding:0 6px 0 16px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.09);border-radius:999px;transition:border-color .22s,box-shadow .22s}
.search-box:focus-within{border-color:var(--accent);box-shadow:var(--shadow-glow)}
.search-box .fa-magnifying-glass{color:var(--accent);font-size:15px}
.search-box input{flex:1;min-width:0;background:transparent;border:0;outline:none;font-size:14px;color:#fff}
.search-box input::placeholder{color:#7A88A2}
.search-box button{height:36px;padding:0 22px;color:var(--bg);background:linear-gradient(120deg,var(--accent),var(--accent-soft));font-weight:600;font-size:14px;border:0;border-radius:999px;transition:transform .2s,box-shadow .2s}
.search-box button:hover{transform:translateY(-1px);box-shadow:var(--shadow-glow)}

.category-hero{position:relative;overflow:hidden;padding:clamp(70px,10vw,112px) 0 clamp(62px,8vw,92px);background:linear-gradient(100deg,rgba(7,12,25,.97) 0%,rgba(23,31,74,.86) 65%,rgba(25,68,108,.66) 100%),url('/assets/images/backpic/back-1.webp') center/cover no-repeat}
.category-hero::before{content:"";position:absolute;top:-120px;right:-80px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(0,194,255,.22),transparent 68%);pointer-events:none}
.category-hero::after{content:"";position:absolute;left:22%;bottom:-220px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(198,255,0,.08),transparent 66%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;align-items:center;position:relative;z-index:2}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(0,194,255,.35);background:rgba(10,24,42,.65);color:var(--accent-soft);font-size:14px;padding:4px 14px;border-radius:999px;margin-bottom:18px}
.hero-title{font-size:clamp(34px,6vw,52px);line-height:1.2;color:#fff;font-weight:800;letter-spacing:.3px;margin-bottom:18px}
.hero-title .light-line{position:relative;display:inline-block;background:linear-gradient(100deg,#fff,#C7E9FF);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-sub{color:#C8D4E7;font-size:17px;line-height:1.9;max-width:570px;margin-bottom:28px}
.btn-group{display:flex;flex-wrap:wrap;gap:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 26px;border-radius:999px;font-weight:600;font-size:15px;border:0;transition:transform .22s ease,box-shadow .22s ease,color .22s ease,border-color .22s ease}
.btn-primary{color:#08111F;background:linear-gradient(120deg,#00E0FF,#33E0FF);box-shadow:0 6px 22px rgba(0,194,255,.28)}
.btn-primary:hover{color:#05121E;transform:translateY(-3px);box-shadow:0 10px 34px rgba(0,194,255,.46)}
.btn-ghost{color:#fff;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.25)}
.btn-ghost:hover{border-color:var(--accent);color:#fff;transform:translateY(-3px);background:rgba(0,194,255,.1)}
.btn-lime{background:var(--lime);color:#1D2410;box-shadow:0 6px 18px rgba(198,255,0,.24)}
.btn-lime:hover{background:#DCFF64;transform:translateY(-3px);color:#13180B}
.hero-visual{position:relative;border-radius:24px;padding:12px;background:linear-gradient(145deg,rgba(255,255,255,.18),rgba(255,255,255,.04));border:1px solid rgba(255,255,255,.25);box-shadow:var(--shadow-lg)}
.hero-shot{position:relative;overflow:hidden;border-radius:18px;background:#0D162C}
.hero-shot img{width:100%;height:340px;object-fit:cover}
.hero-shot::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(8,14,32,.78),transparent 48%)}
.hero-card-badge{position:absolute;z-index:2;left:24px;bottom:18px;right:24px;display:flex;align-items:center;gap:12px;color:#fff}
.hero-card-badge i{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:rgba(0,194,255,.85);color:#08111F}
.hero-card-badge span{font-size:14px}
.pulse-dot{width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 4px rgba(198,255,0,.18);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(198,255,0,.4)}70%{box-shadow:0 0 0 9px rgba(198,255,0,0)}100%{box-shadow:0 0 0 0 rgba(198,255,0,0)}}

.capsule-band{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:rgba(13,20,42,.68)}
.capsule-wrap{padding:16px 0;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:10px}
.capsule-link{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border:1px solid var(--border);background:rgba(255,255,255,.05);border-radius:999px;font-size:14px;color:#B7C3D9;transition:all .22s}
.capsule-link:hover{color:#fff;border-color:rgba(0,194,255,.55);background:rgba(0,194,255,.12);transform:translateY(-2px)}
.capsule-link .fa-solid,.capsule-link .fa-regular{color:var(--accent);font-size:13px}

.topic-map{padding-bottom:clamp(70px,9vw,105px)}
.list-header{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:18px;margin-bottom:28px}
.topic-grid{display:grid;grid-template-columns:1fr;gap:14px}
.topic-card{position:relative;display:flex;align-items:center;gap:20px;padding:22px 24px;background:var(--panel);border:1px solid var(--border);border-radius:var(--r-lg);transition:all .22s ease;border-left:3px solid transparent}
.topic-card:hover{background:var(--panel-hover);border-color:rgba(0,194,255,.33);border-left-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-card)}
.topic-num{flex:0 0 auto;width:62px;height:62px;display:grid;place-items:center;font-size:21px;font-weight:700;color:var(--accent);background:rgba(0,194,255,.1);border:1px solid rgba(0,194,255,.24);border-radius:17px;transition:.22s}
.topic-card:hover .topic-num{background:rgba(0,194,255,.18);box-shadow:0 0 14px rgba(0,194,255,.22)}
.topic-content{flex:1;min-width:0}
.topic-content h3{color:var(--title);font-size:19px;font-weight:700;margin:0 0 6px}
.topic-content p{color:var(--muted);font-size:15px;line-height:1.8;margin:0 0 8px;max-width:760px}
.topic-tags{display:flex;flex-wrap:wrap;gap:8px}
.badge{display:inline-flex;align-items:center;font-size:12px;padding:3px 10px;border-radius:999px;background:rgba(255,255,255,.07);color:#9BABC3;gap:6px}
.badge-soft{background:rgba(0,194,255,.11);color:#9BE8FF}
.topic-action{flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-size:14px;font-weight:600;padding:9px 16px;border-radius:999px;border:1px solid rgba(0,194,255,.26);transition:.22s}
.topic-action:hover{background:rgba(0,194,255,.14);transform:translateX(3px)}

.scene-block{background:linear-gradient(155deg,#111936 0%,#0B1120 65%,#14213F 100%)}
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:20px}
.scene-mini{padding:22px 20px;border-radius:18px;background:rgba(255,255,255,.05);border:1px solid var(--border);transition:.22s}
.scene-mini:hover{border-color:rgba(0,194,255,.35);background:rgba(0,194,255,.06);transform:translateY(-3px)}
.scene-mini .icon-box{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;color:var(--lime);background:rgba(198,255,0,.1);font-size:18px;margin-bottom:14px}
.scene-mini h3{margin:0 0 5px;font-size:17px;color:#fff}
.scene-mini p{margin:0;font-size:14px;color:var(--muted)}
.scene-bottom{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:30px;padding:26px;border-radius:22px;background:rgba(255,255,255,.05);border:1px dashed rgba(255,255,255,.17)}
.scene-bottom .bottom-copy h3{color:#fff;font-size:18px;margin-bottom:8px}
.scene-bottom .bottom-copy p{margin:0;color:#93A5BE}
.video-note{position:relative;border-radius:16px;overflow:hidden;min-height:220px}
.video-note img{width:100%;height:220px;object-fit:cover}
.video-note::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(0,0,0,.12),rgba(0,194,255,.08) 45%,transparent);pointer-events:none}
.video-note span{position:absolute;left:18px;bottom:14px;color:#fff;font-size:14px;z-index:2;background:rgba(5,9,19,.55);padding:4px 12px;border-radius:999px}

.guide-note{padding:36px;border-radius:24px;background:linear-gradient(135deg,rgba(0,194,255,.13),rgba(0,194,255,.03));border:1px solid rgba(0,194,255,.21)}
.process-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:28px}
.process-step{padding:22px 18px;background:rgba(8,16,36,.5);border:1px solid rgba(255,255,255,.07);border-radius:18px;position:relative}
.process-step .step-no{font-size:32px;font-weight:800;color:rgba(0,194,255,.35);line-height:1}
.process-step h3{font-size:17px;color:#fff;margin:14px 0 8px}
.process-step p{font-size:14px;color:#8194AE;margin:0;line-height:1.75}

.stat-band{margin-top:44px;display:grid;grid-template-columns:repeat(4,1fr);border-radius:22px;overflow:hidden;border:1px solid var(--border);background:rgba(255,255,255,.04)}
.stat-cell{padding:30px 20px;text-align:center;border-right:1px solid rgba(255,255,255,.07)}
.stat-cell:last-child{border-right:0}
.stat-value{font-size:38px;font-weight:800;color:#fff;line-height:1.2}
.stat-value em{font-style:normal;font-size:18px;color:var(--accent-soft);margin-right:3px}
.stat-cell .stat-txt{font-size:14px;color:var(--muted);margin-top:4px}

.faq-block{padding-top:clamp(66px,9vw,100px)}
.faq-box{max-width:980px;margin:0 auto}
.faq-item{background:var(--panel);border:1px solid var(--border);border-radius:18px;margin-bottom:12px;overflow:hidden;transition:border-color .22s,background .22s}
.faq-item[open]{background:rgba(0,194,255,.05);border-color:rgba(0,194,255,.34)}
.faq-item summary{list-style:none;display:flex;align-items:center;gap:14px;justify-content:space-between;cursor:pointer;padding:20px 22px;font-size:17px;font-weight:600;color:#fff;transition:.22s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent-soft)}
.faq-item .faq-icon{width:30px;height:30px;flex:0 0 30px;display:grid;place-items:center;border-radius:50%;background:rgba(0,194,255,.12);color:var(--accent);font-size:14px;transition:.22s}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:rgba(0,194,255,.26)}
.faq-answer{padding:0 22px 22px;color:#AEBFD6;margin-left:44px;font-size:15px}
.faq-answer p{margin:0 0 12px}
.faq-answer p:last-child{margin-bottom:0}

.cta-section{padding:clamp(40px,6vw,60px) 0 110px}
.cta-card{position:relative;overflow:hidden;border-radius:26px;padding:clamp(34px,7vw,62px);text-align:center;background:linear-gradient(125deg,rgba(0,194,255,.16),rgba(14,26,58,.76)),url('/assets/images/backpic/back-3.png') center/cover;border:1px solid rgba(0,194,255,.32)}
.cta-card::before{content:"";position:absolute;width:370px;height:370px;border-radius:50%;top:-180px;right:-80px;background:radial-gradient(circle,rgba(198,255,0,.25),transparent 67%)}
.cta-card h2{position:relative;z-index:2;color:#fff;font-size:clamp(25px,4vw,36px);line-height:1.4;margin:0 0 14px}
.cta-card p{position:relative;z-index:2;color:#BBC8DC;font-size:16px;max-width:720px;margin:0 auto 28px}
.cta-card .btn-group{position:relative;z-index:2;justify-content:center}

.site-footer{background:#070D1F;border-top:1px solid rgba(255,255,255,.07);color:#8FA1BD;padding-top:66px}
.footer-grid{padding-bottom:32px}
.footer-grid h4{color:#fff;font-size:16px;margin-bottom:16px;font-weight:700}
.footer-desc{font-size:14px;line-height:1.8;color:#7185A5;margin:13px 0 18px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:9px;font-size:14px}
.footer-links a{display:inline-flex;gap:8px;color:#8FA1BD;transition:.2s}
.footer-links a:hover{color:var(--accent-soft);transform:translateX(3px)}
.footer-links i{color:var(--accent);font-size:12px;line-height:2}
.footer-contact li{display:flex;align-items:center;gap:8px;font-size:13px;color:#7F91AD}
.footer-contact i{width:14px;color:var(--accent)}
.footer-bottom{padding:20px 0;border-top:1px solid rgba(255,255,255,.07);text-align:center}
.footer-bottom p{font-size:13px;color:#637690;margin:0;line-height:1.7}

@media screen and (max-width:1023px){
  .menu-btn{display:inline-flex}
  .search-nav{position:absolute;top:100%;left:0;right:0;display:none;background:#0C142B;border-bottom:1px solid rgba(255,255,255,.1);box-shadow:0 24px 60px rgba(0,0,0,.45)}
  .site-header{position:relative}
  .search-nav.open{display:block;z-index:130}
  .nav-wrapper{flex-direction:column;align-items:stretch;padding:22px 16px;gap:14px}
  .search-box{width:100%;max-width:none;margin:0}
  .nav-list{flex-wrap:wrap;justify-content:center}
  .nav-list.left-nav{margin-bottom:2px}
  .nav-list.right-nav{gap:4px}
  .nav-list a{padding:7px 10px;font-size:14px}
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .hero-visual{max-width:560px}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .scene-bottom{grid-template-columns:1fr}
  .process-row{grid-template-columns:repeat(2,1fr)}
  .stat-band{grid-template-columns:1fr 1fr}
  .stat-cell{text-align:center;border-bottom:1px solid rgba(255,255,255,.07)}
  .stat-cell:nth-child(2n){border-right:0}
  .stat-cell:nth-child(3),.stat-cell:nth-child(4){border-bottom:0}
}
@media screen and (max-width:640px){
  body{font-size:15px}
  .container{width:min(1200px,calc(100% - 32px))}
  .brand-tag{display:none}
  .brand-mark{width:34px;height:34px;font-size:17px;border-radius:10px}
  .brand-text{font-size:17px}
  .topbar-link span{display:none}
  .topbar-link{padding:10px 12px;border-radius:12px}
  .hero-title{font-size:32px}
  .hero-card-badge span{font-size:13px}
  .btn-group .btn{width:100%}
  .topic-card{flex-direction:column;align-items:flex-start;gap:14px;padding:18px}
  .topic-num{width:54px;height:54px;font-size:17px}
  .topic-action{width:auto;padding:8px 14px;font-size:13px;align-self:flex-start}
  .scene-grid{grid-template-columns:1fr}
  .process-row{grid-template-columns:1fr}
  .stat-band{grid-template-columns:1fr 1fr}
  .stat-value{font-size:30px}
  .mega-small{grid-template-columns:repeat(2,1fr)}
  .footer-bottom p{font-size:12px}
  .cta-card .btn-group .btn{width:auto;justify-content:center}
  .faq-answer{margin-left:0;padding-left:54px}
  .footer-grid h4{margin-top:16px}
}