/* roulang page: index */
:root {
  --bg-deepest: #070b18;
  --bg-base: #0b132b;
  --bg-panel: rgba(255, 255, 255, .055);
  --glass-a: rgba(255, 255, 255, .10);
  --glass-b: rgba(255, 255, 255, .03);
  --border-glass: rgba(255, 255, 255, .14);
  --primary: #2de1fc;
  --secondary: #7b5ce0;
  --success: #28e0a5;
  --warning: #f4bb44;
  --text: #eaf4ff;
  --text-muted: rgba(234, 244, 255, .72);
  --text-faint: rgba(234, 244, 255, .46);
  --gradient-primary: linear-gradient(90deg, #2de1fc, #7b5ce0);
  --shadow-primary: 0 0 24px rgba(45, 225, 252, .32);
  --radius-card: 20px;
  --radius-lg: 28px;
  --transition: .3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg-deepest);
  color: var(--text);
  line-height: 1.75;
  letter-spacing: .01em;
  overflow-x: hidden;
}

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

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

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

button,
input {
  font-family: inherit;
}

[id] {
  scroll-margin-top: 96px;
}

h1,
h2,
h3,
h4,
h5 {
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.3;
}

.container,
.container-xxl {
  max-width: 1320px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1090;
  background: rgba(7, 12, 25, .78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(45, 225, 252, .16);
  box-shadow: 0 12px 32px -38px rgba(0, 0, 0, .8);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 72px;
  gap: 22px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 800;
  font-size: 1.28rem;
  white-space: nowrap;
}

.brand-logo:hover {
  color: #fff;
}

.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--gradient-primary);
  color: #06121c;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  font-weight: 800;
  box-shadow: var(--shadow-primary);
}

.logo-highlight {
  color: var(--primary);
}

.main-nav {
  margin-left: 12px;
  display: flex;
  align-items: center;
  gap: 26px;
  margin-right: auto;
}

.main-nav .nav-link {
  color: var(--text-muted);
  font-weight: 500;
  font-size: .98rem;
  padding: 8px 2px;
  position: relative;
  display: inline-flex;
  gap: 6px;
  align-items: center;
}

.main-nav .nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: var(--gradient-primary);
  opacity: 0;
  transform: scaleX(.3);
  transition: var(--transition);
}

.main-nav .nav-link:hover,
.main-nav .nav-link:focus {
  color: #fff;
}

.main-nav .nav-link:hover::after,
.main-nav .nav-link:focus::after,
.main-nav .nav-link.active::after {
  opacity: 1;
  transform: scaleX(1);
}

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

.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  border-radius: 999px;
  padding: .7rem 1.45rem;
  font-weight: 600;
  letter-spacing: .01em;
  border: 0;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), filter var(--transition);
}

.btn:focus-visible,
.btn-primary:focus-visible,
.btn-accent:focus-visible,
.btn-ghost:focus-visible,
.menu-trigger:focus-visible {
  outline: 3px solid rgba(45, 225, 252, .5);
  outline-offset: 2px;
}

.btn-accent,
.btn-accent:hover,
.btn-accent:focus {
  background: var(--gradient-primary);
  color: #06121c;
  box-shadow: var(--shadow-primary);
}

.btn-accent:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
  box-shadow: 0 0 34px rgba(45, 225, 252, .5);
}

.btn-ghost,
.btn-ghost:hover,
.btn-ghost:focus {
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(235, 244, 255, .38);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--primary);
  background: rgba(45, 225, 252, .1);
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(1px) scale(.99);
}

.menu-trigger {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  border: 1px solid rgba(45, 225, 252, .38);
  background: transparent;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0;
}

.menu-trigger span {
  width: 20px;
  height: 2px;
  display: block;
  background: var(--primary);
  border-radius: 999px;
  box-shadow: 0 0 10px rgba(45, 225, 252, .55);
}

.mobile-menu {
  border-top: 1px solid rgba(45, 225, 252, .18);
  background: rgba(6, 11, 24, .96);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: 18px 20px 26px;
  border-radius: 0 0 20px 20px;
}

.mobile-menu .mobile-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 18px;
}

.mobile-menu .mobile-links a {
  padding: 12px 10px;
  border-radius: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

.mobile-menu .mobile-links a.active,
.mobile-menu .mobile-links a:hover {
  color: #fff;
  background: rgba(255, 255, 255, .05);
}

.section {
  padding: 84px 0;
  position: relative;
}

.section-label,
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 600;
  font-size: .86rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 7px 14px;
  border: 1px solid rgba(45, 225, 252, .28);
  background: rgba(45, 225, 252, .08);
  border-radius: 999px;
  margin-bottom: 16px;
}

.section-label .dot,
.eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 4px rgba(45, 225, 252, .16);
}

.section-title {
  font-size: clamp(1.85rem, 3.2vw, 2.5rem);
  color: #fff;
  margin: 0 0 12px;
}

.section-intro {
  color: var(--text-muted);
  max-width: 720px;
  font-size: 1.05rem;
  margin: 0 0 42px;
}

.divider {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .18), transparent);
  margin: 0;
}

.glass-card {
  background: linear-gradient(160deg, var(--glass-a), var(--glass-b));
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-card);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 12px 32px -22px rgba(0, 0, 0, .6), inset 0 1px 0 rgba(255, 255, 255, .12);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.glass-card:hover {
  transform: translateY(-4px);
  border-color: rgba(45, 225, 252, .45);
  box-shadow: 0 0 0 1px rgba(45, 225, 252, .2), 0 20px 42px -26px rgba(0, 0, 0, .7);
}

.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  padding: 130px 0 96px;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  right: -80px;
  top: 8%;
  background: radial-gradient(circle, rgba(45, 225, 252, .28), transparent 68%);
  filter: blur(40px);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  left: 4%;
  bottom: 4%;
  background: radial-gradient(circle, rgba(123, 92, 224, .25), transparent 66%);
  filter: blur(42px);
  pointer-events: none;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 999px;
  color: var(--text-muted);
  font-size: .92rem;
  margin-bottom: 24px;
}

.hero-badge .pulse {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(45, 225, 252, .5);
  animation: pulse 2.2s infinite ease-in-out;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(45, 225, 252, .5); }
  70% { box-shadow: 0 0 0 9px rgba(45, 225, 252, 0); }
  100% { box-shadow: 0 0 0 0 rgba(45, 225, 252, 0); }
}

.hero h1 {
  font-size: clamp(2rem, 4.8vw, 3.6rem);
  line-height: 1.22;
  color: #fff;
  margin: 0 0 22px;
  max-width: 760px;
}

.hero h1 .accent-text {
  color: var(--primary);
}

.hero-lead {
  color: var(--text-muted);
  font-size: 1.08rem;
  max-width: 620px;
  line-height: 1.9;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 32px;
}

.hero-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  color: var(--text-faint);
  font-size: .9rem;
}

.hero-notes span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.hero-notes span::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--success);
}

.hero-visual {
  position: relative;
  min-height: 520px;
  height: 100%;
  z-index: 2;
}

.hero-card-a {
  position: absolute;
  width: 60%;
  right: 8%;
  top: 24px;
  border-radius: 26px;
  border: 1px solid rgba(255, 255, 255, .2);
  box-shadow: 0 28px 70px -34px rgba(0, 0, 0, .8);
  overflow: hidden;
  transform: rotate(-4deg);
}

.hero-card-b {
  position: absolute;
  width: 46%;
  left: 2%;
  bottom: 60px;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, .18);
  box-shadow: 0 25px 50px -28px rgba(0, 0, 0, .7);
  overflow: hidden;
  transform: rotate(5deg);
  z-index: 3;
}

.hero-card-a img,
.hero-card-b img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-float-card {
  position: absolute;
  right: 1%;
  bottom: 10px;
  width: 180px;
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(13, 20, 40, .82);
  border: 1px solid rgba(45, 225, 252, .35);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .06), 0 16px 32px -16px rgba(0, 0, 0, .8);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 4;
}

.hero-float-card .float-title {
  color: #fff;
  font-weight: 700;
  font-size: .96rem;
}

.hero-float-card .float-text {
  color: var(--text-muted);
  font-size: .82rem;
}

.feature-card {
  padding: 28px 24px;
  height: 100%;
  border-radius: 22px;
}

.feature-card-icon {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(45, 225, 252, .13);
  border: 1px solid rgba(45, 225, 252, .3);
  color: var(--primary);
  margin-bottom: 18px;
}

.feature-card-title {
  color: #fff;
  font-size: 1.15rem;
  margin-bottom: 10px;
  font-weight: 700;
}

.feature-card-text {
  color: var(--text-muted);
  font-size: .96rem;
  margin: 0;
}

.channel-card {
  display: block;
  border-radius: 26px;
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(255, 255, 255, .16);
  background: rgba(255, 255, 255, .05);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  text-decoration: none;
  color: var(--text);
  height: 100%;
}

.channel-card:hover {
  transform: translateY(-6px);
  border-color: rgba(45, 225, 252, .6);
  box-shadow: 0 0 0 1px rgba(45, 225, 252, .15), 0 26px 54px -28px rgba(0, 0, 0, .8);
  color: #fff;
}

.channel-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.channel-card-body {
  padding: 20px 22px 24px;
}

.channel-card-body h3 {
  font-size: 1.25rem;
  color: #fff;
  margin-bottom: 8px;
}

.channel-card-body p {
  color: var(--text-muted);
  margin-bottom: 12px;
  font-size: .94rem;
}

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: .92rem;
}

.feature-structured {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 64px;
  margin-top: 30px;
}

.structure-row {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 42px;
  align-items: center;
}

.structure-row.flip .structure-media {
  order: 2;
}

.structure-media {
  position: relative;
}

.structure-media img {
  width: 100%;
  height: 340px;
  border-radius: var(--radius-lg);
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, .16);
  box-shadow: 0 26px 60px -34px rgba(0, 0, 0, .8);
}

.structure-media::before {
  content: "";
  position: absolute;
  inset: 22px -14px -14px 22px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(45, 225, 252, .24);
  pointer-events: none;
}

.structure-text h3 {
  color: #fff;
  font-size: clamp(1.4rem, 2.2vw, 1.8rem);
  margin-bottom: 14px;
}

.structure-text p {
  color: var(--text-muted);
  margin-bottom: 20px;
}

.vlist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.vlist li {
  padding: 12px 15px;
  background: rgba(255, 255, 255, .05);
  border-radius: 12px;
  color: var(--text);
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.vlist li::before {
  content: "✓";
  color: var(--success);
  font-weight: 800;
  margin-top: 2px;
}

.tag-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 22px;
  background: rgba(255, 255, 255, .035);
  margin-top: 52px;
}

.tag-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 13px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .06);
  color: var(--text-muted);
  font-size: .86rem;
  border: 1px solid rgba(255, 255, 255, .08);
}

.tag-item::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary);
}

.scene-card {
  height: 100%;
  padding: 28px 26px;
  border-radius: 24px;
  min-height: 210px;
  position: relative;
  overflow: hidden;
}

.scene-card .scene-index {
  font-size: 1rem;
  color: var(--primary);
  font-weight: 800;
  letter-spacing: .1em;
  display: block;
  margin-bottom: 18px;
}

.scene-card h3 {
  color: #fff;
  font-size: 1.18rem;
  margin-bottom: 9px;
}

.scene-card p {
  color: var(--text-muted);
  font-size: .93rem;
  margin: 0;
}

.scene-card::after {
  content: "";
  position: absolute;
  width: 120px;
  height: 120px;
  right: -50px;
  bottom: -50px;
  border-radius: 50%;
  background: rgba(45, 225, 252, .08);
}

.review-card {
  height: 100%;
  padding: 26px 24px;
  border-radius: 22px;
}

.review-card .quote {
  color: var(--text);
  font-size: .98rem;
  line-height: 1.8;
  margin-bottom: 18px;
}

.review-card .person {
  color: var(--text-muted);
  font-size: .86rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.review-card .person .avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #06121c;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: .82rem;
}

.review-card .stars {
  color: var(--warning);
  letter-spacing: 2px;
  margin-bottom: 14px;
  font-size: .9rem;
}

.membership-card {
  height: 100%;
  padding: 36px 30px 40px;
  border-radius: 26px;
  position: relative;
  overflow: hidden;
  text-align: left;
}

.membership-card .badge-corner {
  position: absolute;
  right: 18px;
  top: 18px;
  background: rgba(45, 225, 252, .16);
  color: var(--primary);
  font-size: .78rem;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(45, 225, 252, .3);
}

.membership-card.featured {
  background: linear-gradient(180deg, rgba(45, 225, 252, .18), rgba(123, 92, 224, .08)), rgba(255, 255, 255, .03);
  border-color: rgba(45, 225, 252, .6);
  box-shadow: 0 0 0 1px rgba(45, 225, 252, .2), 0 0 30px rgba(45, 225, 252, .16);
}

.membership-card .plan-name {
  color: #fff;
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.membership-card .plan-note {
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 18px;
}

.membership-card .plan-feature {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  display: grid;
  gap: 10px;
}

.membership-card .plan-feature li {
  padding-left: 26px;
  position: relative;
  color: var(--text-muted);
  font-size: .95rem;
}

.membership-card .plan-feature li::before {
  content: "✓";
  color: var(--success);
  font-weight: 800;
  position: absolute;
  left: 2px;
}

.news-card {
  display: block;
  height: 100%;
  padding: 22px 22px;
  border-radius: 22px;
  text-decoration: none;
  color: var(--text);
}

.news-card:hover {
  color: #fff;
}

.news-card .news-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 11px;
  color: var(--text-faint);
  font-size: .82rem;
}

.badge-category {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(123, 92, 224, .18);
  border: 1px solid rgba(123, 92, 224, .34);
  color: #d9d2f7;
  font-size: .78rem;
}

.news-card h3 {
  color: #fff;
  font-size: 1.08rem;
  line-height: 1.5;
  margin-bottom: 8px;
  font-weight: 700;
}

.news-card p {
  color: var(--text-muted);
  font-size: .9rem;
  margin: 0 0 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.news-empty {
  border: 1px dashed rgba(255, 255, 255, .2);
  border-radius: 24px;
  padding: 44px 24px;
  text-align: center;
  color: var(--text-muted);
  background: rgba(255, 255, 255, .025);
  font-size: .98rem;
}

.faq-side-title {
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  color: #fff;
  margin-bottom: 14px;
}

.faq-side-desc {
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 0;
}

.faq-accordion .accordion-item {
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 18px !important;
  overflow: hidden;
  margin-bottom: 12px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.faq-accordion .accordion-item:first-of-type,
.faq-accordion .accordion-item:last-of-type {
  border-radius: 18px !important;
}

.faq-accordion .accordion-button {
  background: transparent;
  color: #fff;
  font-weight: 600;
  font-size: 1.02rem;
  padding: 18px 20px;
  box-shadow: none;
  border: 0;
}

.faq-accordion .accordion-button:not(.collapsed) {
  color: var(--primary);
  background: rgba(45, 225, 252, .08);
}

.faq-accordion .accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%232DE1FC' stroke-width='2' stroke-linecap='round'%3e%3cpath d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
  filter: none;
}

.faq-accordion .accordion-button:not(.collapsed)::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%232DE1FC' stroke-width='2' stroke-linecap='round'%3e%3cpath d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
  transform: rotate(-180deg);
}

.faq-accordion .accordion-body {
  padding: 0 20px 20px;
  color: var(--text-muted);
  font-size: .95rem;
}

.faq-accordion .accordion-button:focus-visible {
  box-shadow: none;
  outline: 3px solid rgba(45, 225, 252, .5);
  outline-offset: -2px;
}

.cta-band {
  position: relative;
  text-align: center;
  padding: 84px 0;
  background-size: cover;
  background-position: center;
  border-top: 1px solid rgba(255, 255, 255, .05);
}

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

.cta-band h2 {
  color: #fff;
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  max-width: 830px;
  margin: 0 auto 14px;
}

.cta-band p {
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 28px;
  font-size: 1.02rem;
}

.site-footer {
  background: rgba(7, 11, 22, .96);
  border-top: 1px solid rgba(45, 225, 252, .16);
  padding-top: 60px;
}

.footer-brand {
  color: #fff;
  font-weight: 800;
  font-size: 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.footer-desc {
  color: var(--text-muted);
  font-size: .92rem;
  max-width: 340px;
}

.footer-title {
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 16px;
}

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

.footer-links a {
  color: var(--text-muted);
  font-size: .89rem;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  margin-top: 54px;
  padding: 20px 0;
  color: var(--text-faint);
  font-size: .86rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 16px;
}

@media (max-width: 1199.98px) {
  .hero {
    padding-top: 110px;
  }
  .hero-visual {
    min-height: 460px;
  }
  .hero-float-card {
    width: 150px;
  }
  .structure-row {
    gap: 30px;
  }
  .structure-media img {
    height: 300px;
  }
}

@media (max-width: 991.98px) {
  .header-inner {
    height: 64px;
  }
  .section {
    padding: 64px 0;
  }
  .hero {
    min-height: auto;
    padding: 96px 0 64px;
  }
  .hero-visual {
    min-height: 420px;
    margin-top: 56px;
  }
  .hero-card-a {
    right: 16%;
  }
  .hero-card-b {
    left: 4%;
  }
  .structure-row,
  .structure-row.flip {
    grid-template-columns: 1fr;
  }
  .structure-row .structure-media,
  .structure-row.flip .structure-media {
    order: 2;
  }
  .structure-row .structure-text,
  .structure-row.flip .structure-text {
    order: 1;
  }
  .structure-media img {
    height: 330px;
  }
  .feature-structured {
    gap: 48px;
  }
}

@media (max-width: 767.98px) {
  .section {
    padding: 56px 0;
  }
  .hero {
    padding-top: 82px;
  }
  .hero h1 {
    font-size: 1.85rem;
  }
  .hero-viewport {
    min-height: auto;
  }
  .hero-visual {
    min-height: 340px;
  }
  .hero-card-b {
    width: 42%;
    bottom: 22px;
    left: 0;
  }
  .hero-card-a {
    width: 58%;
    right: 4%;
    top: 8px;
  }
  .hero-float-card {
    width: 132px;
    right: 0;
    bottom: -8px;
    padding: 12px 13px;
  }
  .hero-float-card .float-text {
    font-size: .76rem;
  }
  .feature-card {
    padding: 22px 18px;
  }
  .channel-card img {
    height: 180px;
  }
  .structure-media img {
    height: 250px;
  }
  .membership-card {
    padding: 30px 24px;
  }
  .cta-band {
    padding: 64px 0;
  }
}

@media (max-width: 575.98px) {
  .brand-logo {
    font-size: 1.08rem;
  }
  .logo-mark {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    font-size: 1rem;
  }
  .hero h1 {
    font-size: 1.55rem;
  }
  .hero-lead {
    font-size: .98rem;
  }
  .hero-notes {
    gap: 8px 14px;
  }
  .section-title {
    font-size: 1.55rem;
  }
  .section-intro {
    font-size: .95rem;
  }
  .tag-strip {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 14px;
  }
  .tag-item {
    white-space: nowrap;
  }
  .structure-media img {
    height: 210px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* roulang page: category1 */
:root {
      --bg-deep: #0A0D1A;
      --bg-primary: #0B132B;
      --bg-secondary: #101F3E;
      --bg-dark: rgba(10, 13, 26, 0.92);
      --accent: #2DE1FC;
      --accent-rgb: 45, 225, 252;
      --secondary-accent: #7B5CE0;
      --success: #28E0A5;
      --warning: #F4BB44;
      --text-main: #EAF4FF;
      --text-muted: rgba(234, 244, 255, .72);
      --text-faint: rgba(234, 244, 255, .48);
      --glass-bg: rgba(255, 255, 255, .06);
      --glass-bg-light: rgba(255, 255, 255, .09);
      --glass-border: rgba(255, 255, 255, .14);
      --line-light: rgba(255, 255, 255, .10);
      --radius-lg: 28px;
      --radius-md: 18px;
      --radius-sm: 12px;
      --space-section: clamp(60px, 7vw, 96px);
      --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

    * { box-sizing: border-box; }

    html {
      scroll-behavior: smooth;
      scroll-padding-top: 90px;
    }

    body {
      margin: 0;
      font-family: var(--font-sans);
      background: radial-gradient(ellipse at 20% -10%, #172b58 0%, var(--bg-deep) 46%);
      color: var(--text-main);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: var(--accent);
      text-decoration: none;
      transition: color .25s ease;
    }

    a:hover { color: #8ff2ff; }
    img { max-width: 100%; }
    button, input, textarea { font-family: inherit; }

    ::selection {
      background: rgba(var(--accent-rgb), .28);
      color: #fff;
    }

    :focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 3px;
      border-radius: 6px;
    }

    h1, h2, h3, h4, h5, h6 {
      color: var(--text-main);
      font-weight: 800;
      line-height: 1.22;
    }

    p {
      color: var(--text-muted);
    }

    .text-muted-lg { color: var(--text-muted); }
    .text-faint-lg { color: var(--text-faint); }

    .section-title {
      font-size: clamp(27px, 3.2vw, 38px);
      font-weight: 800;
      letter-spacing: -0.01em;
    }

    .section-lead {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 720px;
      margin: 0 auto;
    }

    .grad-text {
      background: linear-gradient(90deg, var(--accent), #9ecfff);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .glass-card {
      background: linear-gradient(160deg, rgba(255,255,255,.09), rgba(255,255,255,.03));
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border: 1px solid rgba(255,255,255,.12);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.15), 0 12px 32px -12px rgba(0,0,0,.55);
      border-radius: var(--radius-md);
    }

    @supports not ((backdrop-filter: blur(18px)) or (-webkit-backdrop-filter: blur(18px))) {
      .glass-card {
        background: rgba(20, 27, 50, .94);
      }
    }

    .btn {
      border-radius: 999px;
      min-height: 44px;
      padding: .6rem 1.45rem;
      font-weight: 700;
      transition: all .3s ease;
    }

    .btn:focus, .btn:focus-visible {
      box-shadow: 0 0 0 0.25rem rgba(45, 225, 252, .25);
    }

    .brand-btn {
      background: linear-gradient(135deg, #45e5ff 0%, var(--accent) 48%, #22c8f5 100%);
      color: #031027;
      border: 0;
      box-shadow: 0 0 20px rgba(var(--accent-rgb), .35), inset 0 1px 0 rgba(255,255,255,.4);
      font-weight: 800;
      letter-spacing: .02em;
    }

    .brand-btn:hover {
      color: #031027;
      transform: translateY(-2px);
      box-shadow: 0 0 32px rgba(var(--accent-rgb), .58), inset 0 1px 0 rgba(255,255,255,.5);
    }

    .brand-btn:active {
      transform: translateY(0);
      box-shadow: 0 0 15px rgba(var(--accent-rgb), .4);
    }

    .ghost-btn {
      background: rgba(255,255,255,.08);
      border: 1px solid rgba(255,255,255,.35);
      color: var(--text-main);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
    }

    .ghost-btn:hover {
      border-color: var(--accent);
      color: var(--accent);
      background: rgba(45,225,252,.08);
      box-shadow: 0 0 22px rgba(var(--accent-rgb), .18);
      transform: translateY(-2px);
    }

    /* ---------- Header ---------- */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1080;
      background: rgba(8, 11, 23, .72);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(255,255,255,.06);
      min-height: 72px;
      transition: background .3s ease, box-shadow .3s ease;
    }

    .site-header.scrolled {
      background: rgba(5, 8, 18, .92);
      box-shadow: 0 12px 36px -18px rgba(0,0,0,.8);
      border-bottom-color: rgba(45,225,252,.22);
    }

    .site-header .container-xxl {
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      max-width: 1320px;
    }

    .site-brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: .03em;
    }

    .site-brand:hover { color: #fff; }

    .logo-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--accent), var(--secondary-accent));
      color: #081024;
      font-weight: 900;
      font-size: 20px;
      box-shadow: 0 0 16px rgba(var(--accent-rgb), .28);
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 4px;
      margin: 0 auto;
    }

    .main-nav .nav-link, .mobile-nav .nav-link {
      position: relative;
      padding: .5rem .9rem;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-muted);
      border-radius: 999px;
      transition: all .25s ease;
    }

    .main-nav .nav-link:hover, .mobile-nav .nav-link:hover {
      color: var(--accent);
      background: rgba(255, 255, 255, .04);
    }

    .main-nav .nav-link.active, .mobile-nav .nav-link.active {
      color: #fff;
      background: linear-gradient(90deg, rgba(45,225,252,.18), rgba(123,92,224,.12));
      box-shadow: inset 0 0 0 1px rgba(45,225,252,.25);
    }

    .main-nav .nav-link.active::after {
      content: "";
      position: absolute;
      left: 22%;
      right: 22%;
      bottom: 2px;
      height: 2px;
      border-radius: 4px;
      background: var(--accent);
      box-shadow: 0 0 8px rgba(var(--accent-rgb), .8);
    }

    .header-link {
      color: var(--text-muted);
      font-size: 14px;
      font-weight: 600;
      padding: .4rem .9rem;
      border-radius: 999px;
      transition: all .2s;
    }

    .header-link:hover { color: #fff; }

    .mobile-nav-trigger {
      display: inline-flex;
      flex-direction: column;
      gap: 5px;
      border: 1px solid rgba(45,225,252,.55);
      background: transparent;
      border-radius: 14px;
      padding: 10px 10px;
      box-shadow: none;
      outline: none;
    }

    .mobile-nav-trigger .toggle-bar {
      width: 22px;
      height: 2px;
      border-radius: 3px;
      background: var(--accent);
      box-shadow: 0 0 6px rgba(var(--accent-rgb), .5);
      transition: all .3s;
    }

    .navbar-toggler:focus {
      box-shadow: 0 0 0 .25rem rgba(var(--accent-rgb), .18);
    }

    .mobile-nav-panel {
      background: rgba(7, 10, 20, .95);
      border-top: 1px solid rgba(45,225,252,.15);
      backdrop-filter: blur(24px);
      -webkit-backdrop-filter: blur(24px);
    }

    .mobile-nav {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .mobile-nav .nav-link {
      font-size: 16px;
      padding: .8rem 1rem;
    }

    /* ---------- Category Hero ---------- */
    .cat-hero {
      position: relative;
      isolation: isolate;
      min-height: 72vh;
      padding: 160px 0 90px;
      display: flex;
      align-items: center;
      background:
        radial-gradient(ellipse at 78% 16%, rgba(123,92,224,.42), transparent 38%),
        radial-gradient(ellipse at 14% 80%, rgba(45,225,252,.24), transparent 34%),
        linear-gradient(180deg, rgba(10,16,38,.74) 0%, rgba(10,13,26,.82) 100%),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat,
        var(--bg-primary);
    }

    .cat-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      z-index: -1;
      background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
      background-size: 60px 60px;
      mask-image: linear-gradient(to bottom, rgba(0,0,0,.5), transparent 85%);
      -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,.5), transparent 85%);
      pointer-events: none;
    }

    .cat-hero-content {
      max-width: 860px;
      margin: 0 auto;
      text-align: center;
    }

    .cat-hero .crumb {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 13px;
      color: var(--text-faint);
      background: rgba(255,255,255,.07);
      border: 1px solid rgba(255,255,255,.12);
      padding: .4rem 1rem;
      border-radius: 999px;
      margin-bottom: 20px;
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
    }

    .cat-hero .crumb a { color: var(--text-faint); }
    .cat-hero .crumb a:hover { color: var(--accent); }

    .hero-tagline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      letter-spacing: .12em;
      color: rgba(234,244,255,.72);
      text-transform: uppercase;
      background: rgba(45,225,252,.1);
      border: 1px solid rgba(45,225,252,.18);
      border-radius: 999px;
      padding: .4rem 1.1rem;
      margin-bottom: 18px;
    }

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

    .cat-hero h1 {
      font-size: clamp(36px, 5.4vw, 60px);
      font-weight: 900;
      line-height: 1.16;
      letter-spacing: -.02em;
      color: #fff;
      text-shadow: 0 6px 28px rgba(0,0,0,.3);
      margin-bottom: 18px;
    }

    .cat-hero .hero-lead {
      font-size: clamp(17px, 1.8vw, 21px);
      color: rgba(234,244,255,.78);
      max-width: 720px;
      margin: 0 auto 34px;
      line-height: 1.8;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
      margin-bottom: 44px;
    }

    .hero-stats {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 22px 44px;
      padding: 1.2rem 2rem;
      margin: 0;
      list-style: none;
      background: rgba(255,255,255,.05);
      border: 1px solid rgba(255,255,255,.1);
      border-radius: 999px;
      width: fit-content;
      margin-inline: auto;
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
    }

    .hero-stats li {
      display: flex;
      flex-direction: column;
      line-height: 1.3;
    }

    .hero-stats strong {
      font-size: clamp(20px, 2.2vw, 28px);
      font-weight: 900;
      color: #fff;
      font-feature-settings: "tnum";
    }

    .hero-stats span {
      font-size: 13px;
      color: var(--text-faint);
    }

    /* Cat switcher */
    .category-switch-wrap {
      padding: 28px 0 10px;
    }

    .category-switch {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      padding: 6px;
      width: fit-content;
      margin: 0 auto;
      background: rgba(255,255,255,.04);
      border: 1px solid rgba(255,255,255,.1);
      border-radius: 999px;
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
    }

    .cat-pill {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: .55rem 1.15rem;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 700;
      color: var(--text-muted);
      border: 1px solid transparent;
      transition: all .25s;
      line-height: 1.4;
    }

    .cat-pill:hover {
      color: #fff;
      border-color: rgba(45,225,252,.3);
      background: rgba(45,225,252,.06);
    }

    .cat-pill.active {
      color: #04101f;
      background: linear-gradient(135deg, #46e2ff, var(--accent));
      box-shadow: 0 0 18px rgba(var(--accent-rgb), .3);
    }

    .category-switch .cat-pill svg,
    .category-switch .cat-pill i {
      font-size: 13px;
    }

    /* Section base */
    .section-block {
      padding: var(--space-section) 0;
    }

    .section-head {
      margin-bottom: 48px;
    }

    .section-head .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--accent);
      font-size: 14px;
      font-weight: 700;
      letter-spacing: .08em;
      text-transform: uppercase;
      margin-bottom: 12px;
    }

    .divider-glow {
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,.18), transparent);
      border: 0;
      margin: 0;
    }

    /* Feature cards */
    .feature-card {
      padding: 28px 22px;
      height: 100%;
      border-radius: var(--radius-lg);
      position: relative;
      overflow: hidden;
      transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
    }

    .feature-card::before {
      content: "";
      position: absolute;
      left: 22px;
      top: -36px;
      width: 100px;
      height: 100px;
      background: radial-gradient(circle, rgba(45,225,252,.14), transparent 68%);
      pointer-events: none;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      border-color: rgba(45,225,252,.4);
      box-shadow: 0 0 0 1px rgba(45,225,252,.2), 0 18px 36px -18px rgba(0,0,0,.7);
    }

    .feature-icon {
      width: 50px;
      height: 50px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 19px;
      border-radius: 17px;
      background: linear-gradient(135deg, rgba(45,225,252,.2), rgba(123,92,224,.12));
      color: var(--accent);
      margin-bottom: 18px;
      border: 1px solid rgba(45,225,252,.18);
      box-shadow: 0 8px 18px -8px rgba(45,225,252,.5);
    }

    .feature-card h3 {
      font-size: 19px;
      font-weight: 800;
      margin-bottom: 10px;
    }

    .feature-card p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 0;
      line-height: 1.75;
    }

    /* Showcase / genre */
    .showcase-wrap {
      background: linear-gradient(180deg, rgba(255,255,255,.02), transparent);
    }

    .showcase-row {
      display: flex;
      align-items: center;
      gap: 48px;
    }

    .showcase-image {
      position: relative;
      flex: 1 1 48%;
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: rgba(255,255,255,.03);
      border: 1px solid rgba(255,255,255,.14);
      box-shadow: 0 24px 56px -24px rgba(0,0,0,.7);
    }

    .showcase-image img {
      width: 100%;
      aspect-ratio: 4/3;
      object-fit: cover;
      display: block;
      transition: transform .6s ease;
    }

    .showcase-image:hover img {
      transform: scale(1.02);
    }

    .float-tag {
      position: absolute;
      left: 16px;
      bottom: 16px;
      background: rgba(10, 15, 30, .85);
      border: 1px solid rgba(255,255,255,.22);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border-radius: 999px;
      padding: .4rem 1rem;
      font-size: 13px;
      font-weight: 700;
      color: #fff;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin: 0;
    }

    .float-tag i {
      color: var(--accent);
    }

    .showcase-text {
      flex: 1 1 46%;
    }

    .showcase-text .section-title {
      margin-bottom: 18px;
    }

    .check-list {
      list-style: none;
      padding: 0;
      margin: 20px 0 0;
    }

    .check-list li {
      position: relative;
      padding-left: 34px;
      margin-bottom: 13px;
      color: var(--text-muted);
      line-height: 1.7;
      font-size: 15px;
    }

    .check-list li::before {
      content: "\f00c";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      position: absolute;
      left: 0;
      top: 2px;
      width: 22px;
      height: 22px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(40, 224, 165, .12);
      color: var(--success);
      border: 1px solid rgba(40, 224, 165, .28);
      font-size: 11px;
      border-radius: 50%;
    }

    .genre-chip-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 22px;
    }

    .genre-chip {
      background: rgba(255, 255, 255, .06);
      border: 1px solid rgba(255, 255, 255, .14);
      padding: .4rem 1.05rem;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      transition: border-color .2s ease, background .2s ease;
    }

    .genre-chip:hover {
      background: rgba(45,225,252,.08);
      border-color: rgba(45,225,252,.35);
      color: var(--accent);
    }

    .showcase-row.reverse {
      flex-direction: row-reverse;
    }

    /* Process */
    .process-band {
      background:
        radial-gradient(ellipse at 90% 20%, rgba(123,92,224,.16), transparent 38%),
        radial-gradient(ellipse at 8% 80%, rgba(45,225,252,.12), transparent 34%),
        linear-gradient(180deg, rgba(10,13,26,.72), rgba(10,16,38,.9)),
        url('/assets/images/backpic/back-2.png') center/cover no-repeat,
        var(--bg-secondary);
      position: relative;
      isolation: isolate;
      border-block: 1px solid rgba(255,255,255,.08);
    }

    .step-card {
      height: 100%;
      padding: 28px 24px;
      border-radius: var(--radius-lg);
      position: relative;
      transition: transform .3s ease, box-shadow .3s ease;
    }

    .step-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 40px -24px rgba(45,225,252,.2);
    }

    .step-index {
      font-size: 42px;
      font-weight: 900;
      line-height: 1;
      background: linear-gradient(135deg, var(--accent), rgba(255,255,255,.18));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      opacity: .85;
      margin-bottom: 14px;
    }

    .step-card h3 {
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .step-card p {
      margin-bottom: 0;
      font-size: 14px;
      color: var(--text-muted);
    }

    /* Audience */
    .audience-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .audience-card {
      padding: 26px 22px;
      height: 100%;
      border-radius: var(--radius-lg);
      transition: transform .3s ease, border-color .3s ease, background .3s ease;
    }

    .audience-card:hover {
      transform: translateY(-5px);
      border-color: rgba(var(--accent-rgb), .42);
      background: rgba(45,225,252,.05);
    }

    .audience-card i {
      font-size: 24px;
      color: var(--accent);
      margin-bottom: 16px;
      width: 48px;
      height: 48px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(255,255,255,.07);
      border: 1px solid rgba(255,255,255,.1);
      border-radius: 16px;
    }

    .audience-card h3 {
      font-size: 17px;
      font-weight: 800;
      margin-bottom: 9px;
    }

    .audience-card p {
      margin-bottom: 0;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* Latest samples */
    .mini-preview-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .preview-card {
      display: block;
      color: inherit;
      height: 100%;
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: linear-gradient(160deg, rgba(255,255,255,.08), rgba(255,255,255,.03));
      border: 1px solid rgba(255,255,255,.11);
      transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
    }

    .preview-card:hover {
      transform: translateY(-6px);
      border-color: rgba(45,225,252,.38);
      box-shadow: 0 0 0 1px rgba(45,225,252,.14), 0 18px 32px -20px rgba(0,0,0,.7);
      color: inherit;
    }

    .preview-cover {
      position: relative;
      overflow: hidden;
      aspect-ratio: 16/9;
    }

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

    .preview-card:hover .preview-cover img {
      transform: scale(1.04);
    }

    .preview-cover .preview-badge {
      position: absolute;
      left: 12px;
      top: 12px;
      background: rgba(10,14,28,.82);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      padding: .25rem .8rem;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 700;
      color: var(--accent);
    }

    .preview-body {
      padding: 20px 18px 22px;
    }

    .preview-body h3 {
      font-size: 17px;
      font-weight: 800;
      color: #fff;
      line-height: 1.45;
      margin-bottom: 8px;
    }

    .preview-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 0;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .preview-meta {
      margin-top: 16px;
      padding-top: 12px;
      border-top: 1px solid rgba(255,255,255,.08);
      font-size: 12px;
      color: var(--text-faint);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
    }

    /* FAQ */
    .faq-panel {
      max-width: 960px;
      margin: 0 auto;
    }

    .accordion-item {
      background: rgba(255,255,255,.04);
      border: 1px solid rgba(255,255,255,.1);
      border-radius: 20px !important;
      margin-bottom: 14px;
      overflow: hidden;
    }

    .accordion-item:last-of-type {
      border-radius: 20px !important;
    }

    .accordion-button {
      background: transparent;
      color: var(--text-main);
      font-weight: 700;
      font-size: 17px;
      padding: 1.15rem 1.3rem;
      box-shadow: none;
      border: 0;
    }

    .accordion-button:not(.collapsed) {
      background: rgba(45,225,252,.05);
      color: #fff;
      box-shadow: inset 0 -1px 0 rgba(255,255,255,.06);
    }

    .accordion-button:focus {
      box-shadow: none;
      border-color: transparent;
    }

    .accordion-button::after {
      background-image: none;
      content: "\f078";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      width: 22px;
      height: 22px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      transform: rotate(-90deg);
      transition: transform .3s ease;
      font-size: 14px;
    }

    .accordion-button:not(.collapsed)::after {
      background-image: none;
      transform: rotate(0);
      color: var(--accent);
    }

    .accordion-body {
      padding: 0.2rem 1.3rem 1.2rem;
      color: var(--text-muted);
      font-size: 15px;
      line-height: 1.85;
    }

    /* CTA */
    .cta-band {
      padding: 24px 0 0;
    }

    .cta-inner {
      border-radius: 32px;
      padding: clamp(36px, 6vw, 72px) clamp(24px, 5vw, 68px);
      position: relative;
      isolation: isolate;
      overflow: hidden;
      text-align: center;
      background:
        linear-gradient(90deg, rgba(8,11,23,.94), rgba(16,31,62,.78)),
        url('/assets/images/backpic/back-3.png') center/cover no-repeat;
      border: 1px solid rgba(255,255,255,.1);
      box-shadow: 0 32px 80px -40px rgba(45,225,252,.26);
    }

    .cta-inner::before {
      content: "";
      position: absolute;
      left: 10%;
      right: 10%;
      top: -40%;
      z-index: -1;
      height: 90%;
      background: radial-gradient(circle, rgba(45,225,252,.24), transparent 65%);
    }

    .cta-inner h2 {
      font-size: clamp(28px, 4vw, 42px);
      font-weight: 900;
      margin-bottom: 16px;
      letter-spacing: -.02em;
    }

    .cta-inner p {
      max-width: 600px;
      margin: 0 auto 30px;
      font-size: 16px;
    }

    /* Footer */
    .site-footer {
      background: rgba(5, 8, 17, .92);
      border-top: 1px solid rgba(255,255,255,.08);
      padding: 72px 0 32px;
      margin-top: 40px;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 16px;
    }

    .footer-brand .logo-mark {
      width: 38px;
      height: 38px;
      font-size: 19px;
    }

    .footer-desc {
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.85;
      max-width: 360px;
      margin-bottom: 20px;
    }

    .footer-title {
      color: #fff;
      font-size: 16px;
      font-weight: 800;
      letter-spacing: .02em;
      margin-bottom: 16px;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 9px;
    }

    .footer-links a {
      color: var(--text-muted);
      font-size: 14px;
      transition: color .2s ease, padding-left .2s ease;
      line-height: 1.5;
    }

    .footer-links a:hover {
      color: var(--accent);
      padding-left: 4px;
    }

    .footer-bottom {
      margin-top: 34px;
      padding-top: 22px;
      border-top: 1px solid rgba(255,255,255,.08);
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 12px;
      font-size: 12px;
      color: var(--text-faint);
      font-weight: 400;
      letter-spacing: .01em;
    }

    /* Back to top */
    .backtop-btn {
      position: fixed;
      z-index: 1060;
      right: 24px;
      bottom: 28px;
      width: 46px;
      height: 46px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid rgba(45,225,252,.4);
      color: var(--accent);
      background: rgba(10, 14, 28, .78);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      font-size: 16px;
      opacity: 0;
      pointer-events: none;
      transition: opacity .3s ease, transform .3s ease, box-shadow .3s ease;
    }

    .backtop-btn.show {
      opacity: 1;
      pointer-events: auto;
    }

    .backtop-btn:hover {
      color: #041024;
      background: var(--accent);
      box-shadow: 0 0 22px rgba(var(--accent-rgb), .4);
      transform: translateY(-3px);
    }

    /* Responsive */
    @media (max-width: 1199.98px) {
      .showcase-row {
        gap: 32px;
      }
    }

    @media (max-width: 991.98px) {
      .site-header,
      .site-header .container-xxl {
        min-height: 60px;
      }

      .site-header .container-xxl {
        padding-top: .5rem;
        padding-bottom: .5rem;
      }

      .main-nav {
        display: none !important;
      }

      .site-brand {
        font-size: 18px;
      }

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

      .hero-stats {
        border-radius: 24px;
        padding: 1.2rem 1.4rem;
        gap: 18px 28px;
      }

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

      .mini-preview-grid {
        grid-template-columns: 1fr;
        max-width: 560px;
        margin-inline: auto;
      }

      .showcase-row,
      .showcase-row.reverse {
        flex-direction: column;
      }

      .showcase-image,
      .showcase-text {
        flex: none;
        width: 100%;
      }
    }

    @media (max-width: 767.98px) {
      .cat-hero {
        padding: 140px 0 64px;
      }

      .hero-stats {
        width: 100%;
        padding: 1.1rem;
        gap: 18px;
        align-items: center;
        justify-content: space-evenly;
      }

      .hero-stats li {
        align-items: center;
        text-align: center;
      }

      .hero-stats strong {
        font-size: 19px;
      }

      .category-switch {
        border-radius: 24px;
        width: 100%;
      }

      .cat-pill {
        flex: 1;
        justify-content: center;
        min-width: calc(50% - 12px);
      }

      .site-footer {
        padding-top: 56px;
      }

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

    @media (max-width: 575.98px) {
      .cat-hero .hero-lead {
        font-size: 16px;
      }

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

      .hero-actions {
        display: grid;
        grid-template-columns: 1fr 1fr;
      }

      .hero-actions .btn:last-child {
        font-size: 14px;
      }

      .audience-row {
        grid-template-columns: 1fr;
      }

      .feature-card {
        padding: 24px 18px;
      }
    }

/* roulang page: article */
:root {
        --bg-deep: #0A0D1A;
        --primary: #0B132B;
        --primary-light: #101F3E;
        --accent: #2DE1FC;
        --accent-2: #7B5CE0;
        --success: #28E0A5;
        --warning: #F4BB44;
        --text: #EAF4FF;
        --text-muted: rgba(234, 244, 255, 0.72);
        --text-dim: rgba(234, 244, 255, 0.48);
        --glass-border: rgba(255, 255, 255, 0.14);
        --card-glow: rgba(45, 225, 252, 0.35);
        --radius: 18px;
        --radius-lg: 28px;
        --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        font-family: var(--font);
        background: var(--bg-deep);
        color: var(--text);
        line-height: 1.75;
        overflow-x: hidden;
        -webkit-font-smoothing: antialiased;
    }

    body.modal-open,
    body.noscroll {
        overflow: hidden;
    }

    a {
        color: var(--accent);
        text-decoration: none;
        transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
    }

    a:hover {
        color: #b9f6ff;
    }

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

    .container-xxl {
        max-width: 1340px;
    }

    .container-reading {
        max-width: 940px;
        margin: 0 auto;
        padding-left: 20px;
        padding-right: 20px;
    }

    .site-header {
        position: -webkit-sticky;
        position: sticky;
        top: 0;
        z-index: 1050;
        background: rgba(10, 13, 26, 0.72);
        -webkit-backdrop-filter: blur(18px);
        backdrop-filter: blur(18px);
        border-bottom: 1px solid transparent;
        transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
    }

    .site-header:hover,
    .site-header.is-scrolled {
        background: rgba(7, 10, 20, 0.9);
        border-bottom-color: rgba(45, 225, 252, 0.15);
        box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
    }

    .header-wrap {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 18px;
        min-height: 72px;
        padding-top: 8px;
        padding-bottom: 8px;
    }

    .brand {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-weight: 800;
        font-size: 21px;
        color: #fff;
        letter-spacing: 0.01em;
        flex-shrink: 0;
    }

    .brand:hover {
        color: #fff;
    }

    .logo-mark {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border-radius: 12px;
        background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
        color: #0A0D1A;
        font-weight: 800;
        font-size: 19px;
        box-shadow: 0 0 18px rgba(45, 225, 252, 0.45);
        flex-shrink: 0;
    }

    .main-nav {
        display: flex;
        align-items: center;
        gap: 2px;
        margin-left: 6px;
    }

    .main-nav .nav-link,
    .mobile-panel .mobile-nav-link {
        position: relative;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 9px 15px;
        border-radius: 999px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-muted);
        white-space: nowrap;
        transition: color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
    }

    .main-nav .nav-link:hover {
        color: #fff;
        background: rgba(255, 255, 255, 0.07);
    }

    .main-nav .nav-link.active {
        color: var(--accent);
        background: rgba(45, 225, 252, 0.1);
        box-shadow: inset 0 0 0 1px rgba(45, 225, 252, 0.35);
    }

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

    .btn-main,
    .btn-ghost {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-height: 46px;
        padding: 10px 24px;
        border-radius: 999px;
        font-weight: 600;
        font-size: 15px;
        border: 1px solid transparent;
        transition: all 0.3s ease;
        cursor: pointer;
        line-height: 1.4;
        white-space: nowrap;
    }

    .btn-main {
        background: linear-gradient(90deg, var(--accent), #5bd6ff 55%, var(--accent-2));
        color: #08101f;
        box-shadow: 0 0 18px rgba(45, 225, 252, 0.35);
    }

    .btn-main:hover {
        color: #08101f;
        transform: translateY(-2px);
        box-shadow: 0 0 30px rgba(45, 225, 252, 0.6), 0 12px 28px -12px rgba(45, 225, 252, 0.45);
    }

    .btn-main:active {
        transform: translateY(0);
    }

    .btn-ghost {
        background: rgba(255, 255, 255, 0.05);
        color: var(--text);
        border-color: rgba(255, 255, 255, 0.22);
        -webkit-backdrop-filter: blur(10px);
        backdrop-filter: blur(10px);
    }

    .btn-ghost:hover {
        color: var(--accent);
        border-color: rgba(45, 225, 252, 0.7);
        background: rgba(45, 225, 252, 0.08);
        box-shadow: 0 0 18px rgba(45, 225, 252, 0.18);
    }

    .btn-sm {
        min-height: 42px;
        padding: 8px 20px;
        font-size: 14px;
    }

    .mobile-toggle {
        width: 44px;
        height: 44px;
        margin-left: auto;
        padding: 10px;
        border: 1px solid rgba(45, 225, 252, 0.65);
        border-radius: 14px;
        background: rgba(45, 225, 252, 0.06);
        cursor: pointer;
        box-shadow: 0 0 14px rgba(45, 225, 252, 0.15);
    }

    .mobile-toggle .bar {
        display: block;
        width: 22px;
        height: 2px;
        margin: 5px auto;
        background: var(--accent);
        border-radius: 4px;
        transition: all 0.25s ease;
    }

    .mobile-toggle:focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 3px;
    }

    .mobile-panel {
        background: rgba(8, 11, 22, 0.96);
        border-top: 1px solid rgba(45, 225, 252, 0.15);
        padding: 14px 0 20px;
        -webkit-backdrop-filter: blur(18px);
        backdrop-filter: blur(18px);
    }

    .mobile-panel .mobile-nav-inner {
        display: flex;
        flex-direction: column;
        gap: 6px;
    }

    .mobile-panel .mobile-nav-link {
        justify-content: flex-start;
        width: 100%;
        color: var(--text-muted);
        padding: 12px 16px;
    }

    .mobile-panel .mobile-nav-link:hover,
    .mobile-panel .mobile-nav-link.active {
        color: var(--accent);
        background: rgba(45, 225, 252, 0.08);
    }

    .mobile-panel .btn-main {
        margin-top: 12px;
        width: 100%;
    }

    .article-hero {
        position: relative;
        padding: 84px 0 128px;
        background: linear-gradient(135deg, #0B132B 0%, #101F3E 52%, #0B132B 100%);
        overflow: hidden;
    }

    .article-hero::before {
        content: "";
        position: absolute;
        inset: 0;
        background-image: url("/assets/images/backpic/back-1.webp");
        background-size: cover;
        background-position: center;
        opacity: 0.14;
    }

    .article-hero::after {
        content: "";
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        height: 78%;
        background: linear-gradient(180deg, transparent 0%, rgba(10, 13, 26, 0.7) 72%, #0A0D1A 100%);
        pointer-events: none;
    }

    .hero-glow {
        position: absolute;
        width: 380px;
        height: 380px;
        border-radius: 50%;
        filter: blur(90px);
        pointer-events: none;
    }

    .hero-glow.glow-a {
        top: -130px;
        right: 5%;
        background: rgba(45, 225, 252, 0.2);
    }

    .hero-glow.glow-b {
        bottom: 30px;
        left: -160px;
        background: rgba(123, 92, 224, 0.2);
    }

    .article-hero-inner {
        position: relative;
        z-index: 3;
        text-align: center;
    }

    .breadcrumb-nav {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: center;
        gap: 8px;
        font-size: 14px;
        color: var(--text-dim);
        margin-bottom: 30px;
    }

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

    .breadcrumb-nav a:hover {
        color: var(--accent);
    }

    .breadcrumb-nav .crumb-current {
        color: var(--text);
        font-weight: 500;
    }

    .breadcrumb-nav .sep {
        color: var(--text-dim);
        font-size: 12px;
        opacity: 0.6;
    }

    .article-title {
        font-size: clamp(30px, 4vw, 52px);
        font-weight: 800;
        line-height: 1.22;
        margin: 0 auto 18px;
        max-width: 1060px;
        color: #fff;
        letter-spacing: 0.01em;
    }

    .article-meta {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: center;
        gap: 12px;
        color: var(--text-muted);
        font-size: 14px;
        margin-top: 8px;
    }

    .meta-chip {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 6px 14px;
        border-radius: 999px;
        background: rgba(45, 225, 252, 0.1);
        border: 1px solid rgba(45, 225, 252, 0.25);
        color: var(--accent);
        font-size: 13px;
        font-weight: 500;
    }

    .meta-sep {
        width: 4px;
        height: 4px;
        border-radius: 50%;
        background: rgba(234, 244, 255, 0.35);
        display: inline-block;
    }

    .meta-item {
        color: var(--text-muted);
    }

    .article-section {
        position: relative;
        z-index: 5;
        margin-top: -64px;
        padding-bottom: 64px;
    }

    .article-card {
        position: relative;
        padding: 54px 56px;
        background: linear-gradient(165deg, rgba(20, 30, 58, 0.92), rgba(11, 19, 43, 0.98));
        border: 1px solid rgba(255, 255, 255, 0.12);
        border-radius: var(--radius-lg);
        box-shadow: 0 22px 60px -20px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.08);
        -webkit-backdrop-filter: blur(18px);
        backdrop-filter: blur(18px);
    }

    .article-content {
        font-size: 16px;
        line-height: 1.9;
        color: rgba(234, 244, 255, 0.88);
    }

    .article-content > *:first-child {
        margin-top: 0;
    }

    .article-content p {
        margin: 0 0 1.35em;
    }

    .article-content h2 {
        font-size: 27px;
        font-weight: 700;
        line-height: 1.35;
        margin: 48px 0 18px;
        padding-left: 16px;
        border-left: 4px solid var(--accent);
        color: #fff;
    }

    .article-content h3 {
        font-size: 21px;
        font-weight: 700;
        margin: 38px 0 14px;
        color: #fff;
    }

    .article-content h4 {
        font-size: 18px;
        font-weight: 600;
        margin: 28px 0 10px;
        color: rgba(234, 244, 255, 0.95);
    }

    .article-content ul,
    .article-content ol {
        margin: 0 0 1.4em;
        padding-left: 1.35rem;
    }

    .article-content li {
        margin-bottom: 0.45em;
    }

    .article-content a {
        color: var(--accent);
        border-bottom: 1px solid rgba(45, 225, 252, 0.4);
    }

    .article-content a:hover {
        color: #fff;
        border-bottom-color: var(--accent);
    }

    .article-content img {
        display: block;
        max-width: 100%;
        height: auto;
        margin: 30px auto;
        border-radius: 14px;
        border: 1px solid rgba(255, 255, 255, 0.13);
        box-shadow: 0 16px 36px -16px rgba(0, 0, 0, 0.7);
    }

    .article-content blockquote {
        margin: 1.8em 0;
        padding: 16px 22px;
        background: rgba(255, 255, 255, 0.05);
        border-left: 3px solid var(--accent);
        border-radius: 0 14px 14px 0;
        color: rgba(234, 244, 255, 0.8);
    }

    .article-content blockquote p {
        margin-bottom: 0;
    }

    .article-content table {
        width: 100%;
        margin: 24px 0;
        border-collapse: collapse;
        font-size: 15px;
        color: var(--text);
    }

    .article-content table td,
    .article-content table th {
        padding: 12px 14px;
        border: 1px solid rgba(255, 255, 255, 0.10);
    }

    .article-content table th {
        background: rgba(45, 225, 252, 0.06);
        font-weight: 600;
    }

    .not-found-box {
        text-align: center;
        padding: 46px 12px 30px;
    }

    .nf-code {
        font-size: 78px;
        font-weight: 800;
        line-height: 1;
        background: linear-gradient(135deg, rgba(45, 225, 252, 0.4), rgba(45, 225, 252, 0.08));
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
        margin-bottom: 18px;
    }

    .nf-title {
        font-size: 30px;
        font-weight: 700;
        margin: 0 0 14px;
        color: #fff;
    }

    .nf-desc {
        max-width: 620px;
        margin: 0 auto 28px;
        color: var(--text-muted);
        font-size: 15px;
    }

    .article-end-nav {
        padding: 18px 0 40px;
    }

    .article-end-nav .btn-ghost {
        margin: 0 6px;
    }

    .cta-section {
        padding: 56px 0 32px;
    }

    .cta-banner {
        position: relative;
        overflow: hidden;
        border-radius: 32px;
        background-image: linear-gradient(115deg, rgba(16, 31, 62, 0.92), rgba(11, 19, 43, 0.84)), url("/assets/images/coverpic/cover-2.png");
        background-size: cover;
        background-position: center;
        border: 1px solid rgba(255, 255, 255, 0.12);
        box-shadow: 0 26px 60px -22px rgba(0, 0, 0, 0.8);
    }

    .cta-banner::before {
        content: "";
        position: absolute;
        width: 320px;
        height: 320px;
        border-radius: 50%;
        background: rgba(45, 225, 252, 0.2);
        filter: blur(100px);
        top: -130px;
        left: 12%;
        pointer-events: none;
    }

    .cta-banner::after {
        content: "";
        position: absolute;
        inset: 0;
        pointer-events: none;
        border-radius: inherit;
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
    }

    .cta-inner {
        position: relative;
        z-index: 2;
        text-align: center;
        padding: 70px 24px;
    }

    .cta-eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 6px 16px;
        background: rgba(45, 225, 252, 0.1);
        border: 1px solid rgba(45, 225, 252, 0.25);
        border-radius: 999px;
        color: var(--accent);
        font-size: 14px;
        font-weight: 600;
        margin-bottom: 20px;
    }

    .cta-banner h2 {
        font-size: clamp(26px, 3vw, 40px);
        font-weight: 800;
        color: #fff;
        margin: 0 0 18px;
        line-height: 1.3;
    }

    .cta-banner p {
        color: var(--text-muted);
        font-size: 16px;
        max-width: 520px;
        margin: 0 auto 30px;
    }

    .cta-buttons {
        display: flex;
        gap: 14px;
        justify-content: center;
        align-items: center;
    }

    .site-footer {
        margin-top: 50px;
        padding-top: 60px;
        background: rgba(6, 8, 16, 0.96);
        border-top: 1px solid rgba(45, 225, 252, 0.12);
    }

    .footer-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 22px;
        font-weight: 800;
        color: #fff;
        margin-bottom: 16px;
    }

    .footer-desc {
        color: var(--text-muted);
        font-size: 15px;
        line-height: 1.8;
        margin: 0;
    }

    .footer-title {
        color: #fff;
        font-size: 16px;
        font-weight: 600;
        letter-spacing: 0.02em;
        margin-bottom: 18px;
    }

    .footer-links {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .footer-links a {
        color: var(--text-muted);
        font-size: 15px;
        line-height: 1.5;
        transition: color 0.2s ease, transform 0.2s ease;
    }

    .footer-links a:hover {
        color: var(--accent);
        transform: translateX(2px);
    }

    .footer-bottom {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        align-items: center;
        justify-content: space-between;
        padding: 26px 0 28px;
        margin-top: 60px;
        border-top: 1px solid rgba(255, 255, 255, 0.07);
        color: var(--text-dim);
        font-size: 13px;
    }

    .back-top {
        position: fixed;
        right: 22px;
        bottom: 24px;
        z-index: 99;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        border-radius: 50%;
        background: rgba(11, 19, 43, 0.88);
        border: 1px solid rgba(45, 225, 252, 0.55);
        color: var(--accent);
        font-size: 20px;
        box-shadow: 0 10px 28px -8px rgba(45, 225, 252, 0.35);
        -webkit-backdrop-filter: blur(10px);
        backdrop-filter: blur(10px);
        transition: all 0.25s ease;
    }

    .back-top:hover {
        color: #0A0D1A;
        background: var(--accent);
        border-color: var(--accent);
        transform: translateY(-3px);
    }

    @media (max-width: 1199.98px) {
        .header-wrap {
            min-height: 68px;
        }
    }

    @media (max-width: 991.98px) {
        .header-wrap {
            min-height: 60px;
        }

        .article-card {
            padding: 36px 28px;
        }

        .cta-inner {
            padding: 54px 20px;
        }
    }

    @media (max-width: 767.98px) {
        .brand-text {
            font-size: 19px;
        }

        .logo-mark {
            width: 36px;
            height: 36px;
            font-size: 17px;
            border-radius: 10px;
        }

        .article-title {
            font-size: 30px;
        }

        .article-card {
            padding: 30px 20px;
            border-radius: 22px;
        }

        .article-content {
            font-size: 15px;
        }

        .article-content h2 {
            font-size: 23px;
            padding-left: 12px;
        }

        .article-content h3 {
            font-size: 19px;
        }

        .article-meta {
            flex-direction: row;
            flex-wrap: wrap;
        }

        .meta-sep {
            display: none;
        }

        .cta-buttons {
            flex-direction: column;
            width: 100%;
        }

        .cta-buttons .btn-main,
        .cta-buttons .btn-ghost {
            width: 100%;
        }

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

        .back-top {
            right: 14px;
            bottom: 14px;
        }
    }

    @media (max-width: 520px) {
        .article-hero {
            padding: 66px 0 110px;
        }

        .article-title {
            font-size: 26px;
        }

        .article-section {
            margin-top: -48px;
        }

        .nf-code {
            font-size: 60px;
        }
    }

    @supports not (backdrop-filter: blur(1px)) {
        .site-header,
        .article-card,
        .btn-ghost,
        .mobile-panel,
        .back-top {
            background: rgba(15, 21, 40, 0.96);
        }
    }

/* roulang page: category3 */
:root {
      --bg-deep: #070b18;
      --bg-page: #0b132b;
      --bg-elev: #101f3e;
      --accent: #2de1fc;
      --accent-deep: #00b8d9;
      --secondary-accent: #7b5ce0;
      --success: #28e0a5;
      --warning: #f4bb44;
      --text-main: #eaf4ff;
      --text-muted: rgba(234, 244, 255, 0.72);
      --text-weak: rgba(234, 244, 255, 0.48);
      --glass-bg: rgba(255, 255, 255, 0.05);
      --glass-border: rgba(255, 255, 255, 0.12);
      --card-radius: 18px;
      --card-radius-lg: 28px;
      --section-space: clamp(56px, 7vw, 104px);
      --header-h: 76px;
      --shadow-soft: 0 12px 32px -12px rgba(0, 0, 0, 0.55);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      scroll-padding-top: calc(var(--header-h) + 24px);
    }

    body {
      margin: 0;
      font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      background-color: var(--bg-deep);
      background-image: radial-gradient(circle at 20% 0%, rgba(123, 92, 224, 0.12), transparent 32%),
        radial-gradient(circle at 80% 12%, rgba(45, 225, 252, 0.08), transparent 30%),
        linear-gradient(180deg, #0a0d1a 0%, #080c19 100%);
      color: var(--text-main);
      line-height: 1.7;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }

    h1, h2, h3, h4, h5, h6 {
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.02em;
      color: var(--text-main);
    }

    h2 {
      font-size: clamp(28px, 3.6vw, 44px);
    }

    h3 {
      font-size: clamp(20px, 1.6vw, 24px);
    }

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

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

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

    p {
      margin: 0 0 1rem 0;
    }

    .container-xxl {
      max-width: 1380px;
    }

    ::selection {
      background: rgba(45, 225, 252, 0.25);
      color: #fff;
    }

    .text-gradient {
      background: linear-gradient(100deg, #2de1fc 0%, #ffffff 48%, #28e0a5 100%);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .text-soft {
      color: var(--text-muted);
    }

    .icon-accent {
      color: var(--accent);
    }

    .section {
      padding-top: var(--section-space);
      padding-bottom: var(--section-space);
    }

    .section-light {
      background: rgba(16, 31, 62, 0.4);
    }

    .section-header {
      max-width: 760px;
      margin-bottom: 42px;
      position: relative;
    }

    .section-header.center {
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      color: var(--accent);
      background: rgba(45, 225, 252, 0.08);
      border: 1px solid rgba(45, 225, 252, 0.25);
      padding: 6px 14px;
      border-radius: 999px;
      margin-bottom: 18px;
    }

    .section-header .lead {
      color: var(--text-muted);
      font-size: clamp(15px, 1.3vw, 18px);
      line-height: 1.85;
      margin-bottom: 0;
    }

    .glass-card {
      background: linear-gradient(160deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03));
      -webkit-backdrop-filter: blur(18px);
      backdrop-filter: blur(18px);
      border: 1px solid rgba(255, 255, 255, 0.12);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15), 0 12px 32px -12px rgba(0, 0, 0, 0.55);
      border-radius: var(--card-radius);
      transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
    }

    .glass-card:hover {
      transform: translateY(-4px);
      border-color: rgba(45, 225, 252, 0.45);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18), 0 0 0 1px rgba(45, 225, 252, 0.22), 0 18px 38px -12px rgba(0, 0, 0, 0.6);
    }

    .btn-main,
    .btn-ghost,
    .btn-header {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      min-height: 48px;
      padding: 12px 28px;
      border-radius: 999px;
      border: 0;
      font-weight: 700;
      font-size: 15px;
      letter-spacing: .02em;
      transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
      line-height: 1;
    }

    .btn-main {
      background: linear-gradient(90deg, #2de1fc 0%, #00b8d9 100%);
      color: #0a0d1a !important;
      box-shadow: 0 0 18px rgba(45, 225, 252, 0.35);
    }

    .btn-main:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 28px rgba(45, 225, 252, 0.75), 0 12px 28px -8px rgba(45, 225, 252, 0.45);
      color: #080d1a !important;
    }

    .btn-main:active {
      transform: translateY(0) scale(0.98);
    }

    .btn-ghost {
      border: 1px solid rgba(255, 255, 255, 0.5);
      background: rgba(255, 255, 255, 0.06);
      color: #f2faff !important;
      -webkit-backdrop-filter: blur(10px);
      backdrop-filter: blur(10px);
    }

    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.12);
      border-color: var(--accent);
      box-shadow: 0 0 18px rgba(45, 225, 252, 0.2);
      transform: translateY(-2px);
    }

    .btn-header {
      min-height: 42px;
      padding: 10px 20px;
      font-size: 14px;
      background: linear-gradient(90deg, #2de1fc, #00b8d9);
      color: #080d1a !important;
      box-shadow: 0 0 14px rgba(45, 225, 252, 0.3);
    }

    .btn-header:hover {
      background: linear-gradient(90deg, #62ecff, #19c3e0);
      box-shadow: 0 0 22px rgba(45, 225, 252, 0.6);
      transform: translateY(-1px);
      color: #080d1a !important;
    }

    .btn-arrow::after {
      content: "→";
      font-weight: 400;
      font-size: 17px;
      line-height: 1;
      opacity: .85;
      transition: transform .2s ease;
    }

    .btn-arrow:hover::after {
      transform: translateX(4px);
    }

    /* Header ====================================== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1080;
      background: rgba(10, 13, 26, 0.78);
      -webkit-backdrop-filter: blur(18px);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      transition: background .3s ease, border-color .3s ease;
    }

    .site-header .top-bar {
      min-height: var(--header-h);
      gap: 20px;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
      color: var(--text-main);
      font-size: 21px;
      font-weight: 800;
      letter-spacing: .01em;
    }

    .brand-logo:hover {
      color: #fff;
    }

    .logo-mark {
      width: 42px;
      height: 42px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, #2de1fc, #7b5ce0);
      border-radius: 14px;
      font-weight: 900;
      font-size: 19px;
      color: #0a0d1a;
      box-shadow: 0 0 16px rgba(45, 225, 252, .32);
    }

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

    .main-nav .nav-link {
      position: relative;
      display: inline-flex;
      align-items: center;
      min-height: 44px;
      padding: 10px 14px;
      font-size: 15px;
      font-weight: 500;
      color: rgba(234, 244, 255, 0.82);
      border-radius: 12px;
      transition: color .2s ease, background .2s ease;
    }

    .main-nav .nav-link::after {
      content: "";
      position: absolute;
      left: 18px;
      right: 18px;
      bottom: 6px;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
      transform: scaleX(0);
      transform-origin: left;
      transition: transform .3s ease;
      box-shadow: 0 0 10px rgba(45, 225, 252, .8);
    }

    .main-nav .nav-link:hover,
    .main-nav .nav-link.active {
      color: var(--accent);
      background: rgba(45, 225, 252, 0.06);
    }

    .main-nav .nav-link.active::after,
    .main-nav .nav-link:hover::after {
      transform: scaleX(1);
    }

    .header-actions {
      display: inline-flex;
      align-items: center;
      gap: 18px;
      flex-shrink: 0;
    }

    .header-actions .text-link {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
    }

    .header-actions .text-link:hover {
      color: var(--accent);
    }

    .menu-toggle {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: rgba(45, 225, 252, 0.08);
      border: 1px solid rgba(45, 225, 252, 0.6);
      color: var(--accent);
      font-size: 19px;
      box-shadow: 0 0 14px rgba(45, 225, 252, 0.22);
    }

    .menu-toggle:hover,
    .menu-toggle:focus {
      background: rgba(45, 225, 252, 0.15);
      border-color: var(--accent);
      color: #fff;
    }

    .mobile-nav {
      padding: 18px 20px 26px;
      background: rgba(10, 13, 26, 0.96);
      -webkit-backdrop-filter: blur(20px);
      backdrop-filter: blur(20px);
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 0 0 20px 20px;
    }

    .mobile-nav .mobile-nav-link {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 13px 18px;
      border-radius: 14px;
      color: rgba(234, 244, 255, 0.86);
      font-weight: 600;
      margin-bottom: 6px;
      background: rgba(255, 255, 255, 0.03);
    }

    .mobile-nav .mobile-nav-link i {
      width: 20px;
      text-align: center;
      color: var(--accent);
    }

    .mobile-nav .mobile-nav-link:hover,
    .mobile-nav .mobile-nav-link.active {
      color: var(--accent);
      background: rgba(45, 225, 252, 0.08);
    }

    .main-content {
      overflow: hidden;
    }

    /* Category Hero ===================== */
    .category-hero {
      position: relative;
      min-height: clamp(560px, 88vh, 700px);
      display: flex;
      align-items: center;
      padding: calc(var(--header-h) + 66px) 0 80px;
      background:
        linear-gradient(135deg, rgba(7, 11, 24, 0.96) 0%, rgba(10, 17, 40, 0.82) 60%, rgba(7, 11, 24, 0.92) 100%),
        url("/assets/images/backpic/back-1.webp") center 30% / cover no-repeat;
      isolation: isolate;
    }

    .category-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      z-index: -1;
      background:
        radial-gradient(circle at 18% 25%, rgba(45, 225, 252, 0.16), transparent 16%),
        radial-gradient(circle at 84% 65%, rgba(123, 92, 224, 0.2), transparent 20%),
        radial-gradient(circle at 70% 12%, rgba(40, 224, 165, 0.09), transparent 12%);
    }

    .category-hero::after {
      content: "";
      position: absolute;
      width: 480px;
      height: 480px;
      right: -120px;
      top: 60px;
      background: rgba(45, 225, 252, 0.2);
      filter: blur(150px);
      border-radius: 50%;
      z-index: -1;
      pointer-events: none;
    }

    .category-hero .hero-inner {
      position: relative;
      z-index: 2;
      max-width: 860px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: .08em;
      padding: 8px 16px;
      background: rgba(45, 225, 252, 0.12);
      border: 1px solid rgba(45, 225, 252, 0.3);
      color: var(--accent);
      border-radius: 999px;
      margin-bottom: 26px;
      flex-wrap: wrap;
    }

    .category-hero h1 {
      font-size: clamp(38px, 6vw, 70px);
      margin-bottom: 24px;
      font-weight: 800;
      color: #fff;
      letter-spacing: -0.03em;
    }

    .category-hero .hero-lead {
      font-size: clamp(17px, 2vw, 23px);
      color: rgba(234, 244, 255, 0.9);
      max-width: 660px;
      line-height: 1.85;
      margin-bottom: 32px;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 24px;
    }

    .hero-meta-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px 22px;
      padding: 0;
      margin: 0;
      list-style: none;
      font-size: 14px;
      color: var(--text-weak);
    }

    .hero-meta-list i {
      color: var(--success);
      margin-right: 6px;
      font-size: 12px;
    }

    /* Pill tabs ================== */
    .category-subnav {
      padding-top: 28px;
      padding-bottom: 12px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      background: rgba(10, 13, 26, 0.4);
      -webkit-backdrop-filter: blur(14px);
      backdrop-filter: blur(14px);
    }

    .category-tabs {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .category-tabs li a {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 18px;
      border-radius: 999px;
      border: 1px solid rgba(255, 255, 255, 0.16);
      background: rgba(255, 255, 255, 0.04);
      color: rgba(234, 244, 255, 0.74);
      font-size: 14px;
      font-weight: 600;
      transition: all .25s ease;
    }

    .category-tabs li a.active {
      color: #092037;
      background: linear-gradient(90deg, #2de1fc, #00b8d9);
      border-color: transparent;
      box-shadow: 0 0 20px rgba(45, 225, 252, 0.35);
    }

    .category-tabs li a:not(.active):hover {
      color: var(--accent);
      border-color: rgba(45, 225, 252, 0.6);
      background: rgba(45, 225, 252, 0.06);
    }

    /* Feature cards ======================= */
    .feature-cards .card-body-inner {
      padding: 30px 26px;
    }

    .feature-card .feature-icon {
      width: 58px;
      height: 58px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      margin-bottom: 20px;
      border-radius: 18px;
      background: linear-gradient(145deg, rgba(45, 225, 252, 0.15), rgba(123, 92, 224, 0.15));
      border: 1px solid rgba(45, 225, 252, 0.24);
      color: var(--accent);
      box-shadow: 0 8px 24px -12px rgba(45, 225, 252, 0.5);
    }

    .feature-card h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .feature-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 0;
    }

    .feature-note {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 18px 22px;
      border-radius: 16px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px dashed rgba(255, 255, 255, 0.18);
      color: var(--text-weak);
      font-size: 14px;
      margin-top: 32px;
    }

    .feature-note i {
      color: var(--warning);
    }

    /* Split section =============== */
    .split-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: clamp(28px, 4.5vw, 68px);
      align-items: center;
    }

    .split-image {
      position: relative;
      border-radius: 28px;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.14);
      box-shadow: 0 28px 60px -20px rgba(0, 0, 0, 0.55);
      background: #0f1a36;
    }

    .split-image img {
      width: 100%;
      min-height: 300px;
      object-fit: cover;
      display: block;
      aspect-ratio: 5 / 4;
    }

    .split-image::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(145deg, rgba(45, 225, 252, 0.08), rgba(123, 92, 224, 0.22));
      pointer-events: none;
    }

    .split-float-note {
      position: absolute;
      left: 20px;
      bottom: 20px;
      z-index: 2;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 10px 16px;
      border-radius: 14px;
      background: rgba(7, 11, 24, 0.72);
      -webkit-backdrop-filter: blur(12px);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(45, 225, 252, 0.3);
      font-size: 13px;
      font-weight: 600;
      color: #dff7fe;
      box-shadow: 0 0 18px rgba(45, 225, 252, 0.18);
    }

    .split-copy h2 {
      margin-bottom: 18px;
    }

    .split-copy .lead {
      color: var(--text-muted);
      margin-bottom: 28px;
    }

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

    .check-list li {
      position: relative;
      padding: 8px 0 8px 40px;
      color: rgba(234, 244, 255, 0.9);
      font-size: 15px;
      line-height: 1.75;
    }

    .check-list li i {
      position: absolute;
      left: 0;
      top: 12px;
      width: 26px;
      height: 26px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      color: #08231d;
      background: var(--success);
      font-size: 13px;
      box-shadow: 0 0 0 4px rgba(40, 224, 165, 0.1);
    }

    /* Process ===================== */
    .process-panel {
      background: linear-gradient(160deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02));
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 30px;
      padding: clamp(28px, 4vw, 48px);
    }

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

    .step-item {
      position: relative;
    }

    .step-num {
      font-size: 42px;
      font-weight: 800;
      line-height: 1;
      color: rgba(45, 225, 252, 0.55);
      display: block;
      margin-bottom: 18px;
      -webkit-text-stroke: 1px rgba(45, 225, 252, 0.2);
    }

    .step-item h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .step-item p {
      color: var(--text-muted);
      font-size: 14px;
      margin-bottom: 0;
      line-height: 1.75;
    }

    .step-line {
      display: none;
    }

    /* Scene cards ==================== */
    .scene-card {
      padding: 28px 26px;
      height: 100%;
    }

    .scene-card .scene-head {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }

    .scene-card .scene-icon {
      width: 44px;
      height: 44px;
      border-radius: 14px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 19px;
      color: var(--accent);
      background: rgba(45, 225, 252, 0.12);
      border: 1px solid rgba(45, 225, 252, 0.2);
    }

    .scene-card h3 {
      font-size: 19px;
      margin-bottom: 0;
    }

    .scene-card p {
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.75;
      margin-bottom: 0;
    }

    /* FAQ ========================== */
    .faq-wrap {
      display: grid;
      grid-template-columns: 0.8fr 1.4fr;
      gap: clamp(20px, 4vw, 64px);
      align-items: start;
    }

    .faq-intro {
      position: sticky;
      top: calc(var(--header-h) + 30px);
    }

    .faq-intro p {
      color: var(--text-muted);
      font-size: 15px;
    }

    .accordion-item {
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 18px !important;
      margin-bottom: 16px;
      overflow: hidden;
      color: var(--text-main);
    }

    .accordion-button {
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-main);
      font-weight: 600;
      font-size: 15px;
      padding: 20px 26px;
      box-shadow: none !important;
    }

    .accordion-button:not(.collapsed) {
      background: rgba(45, 225, 252, 0.08);
      color: var(--accent);
    }

    .accordion-button:focus {
      box-shadow: 0 0 0 3px rgba(45, 225, 252, 0.15) !important;
    }

    .accordion-button::after {
      background-image: none;
      content: "\f078";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      font-size: 14px;
      color: var(--accent);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 22px;
      height: 22px;
      line-height: 1;
    }

    .accordion-button:not(.collapsed)::after {
      color: var(--accent);
    }

    .accordion-body {
      padding: 6px 26px 22px;
      color: var(--text-muted);
      font-size: 15px;
      line-height: 1.85;
    }

    /* CTA ====================== */
    .cta-panel {
      position: relative;
      background:
        linear-gradient(135deg, rgba(8, 12, 26, 0.88), rgba(16, 31, 62, 0.72)),
        url("/assets/images/backpic/back-2.png") center center / cover no-repeat;
    }

    .cta-panel .ring-glow {
      position: absolute;
      width: 420px;
      height: 220px;
      background: rgba(45, 225, 252, 0.16);
      filter: blur(90px);
      top: 20%;
      left: 15%;
      z-index: 0;
      pointer-events: none;
    }

    .cta-panel .cta-inner {
      position: relative;
      z-index: 1;
      background: rgba(16, 31, 62, 0.72);
      -webkit-backdrop-filter: blur(18px);
      backdrop-filter: blur(18px);
      border: 1px solid rgba(255, 255, 255, 0.14);
      border-radius: var(--card-radius-lg);
      box-shadow: 0 28px 60px -20px rgba(0, 0, 0, 0.6);
      padding: clamp(30px, 6vw, 58px);
      text-align: center;
    }

    .cta-panel h2 {
      font-size: clamp(28px, 4vw, 48px);
      margin: 18px 0 14px;
    }

    .cta-panel .cta-lead {
      max-width: 620px;
      margin-left: auto;
      margin-right: auto;
      color: var(--text-muted);
      font-size: 16px;
      margin-bottom: 26px;
    }

    /* Back home button */
    .home-return {
      text-align: center;
      padding-top: 12px;
    }

    .home-return a {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 15px;
      font-weight: 700;
      padding: 16px 34px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.25);
      color: var(--text-main);
      transition: all .3s ease;
    }

    .home-return a:hover {
      background: rgba(45, 225, 252, 0.1);
      border-color: var(--accent);
      color: var(--accent);
      box-shadow: 0 0 20px rgba(45, 225, 252, 0.2);
    }

    /* Footer =============================== */
    .site-footer {
      background: rgba(7, 10, 20, 0.96);
      border-top: 1px solid rgba(45, 225, 252, 0.12);
      padding: 72px 0 0;
      color: rgba(234, 244, 255, 0.66);
    }

    .site-footer .container-xxl {
      padding-bottom: 10px;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 22px;
      font-weight: 800;
      color: #f2f8ff;
      margin-bottom: 18px;
    }

    .footer-brand .logo-mark {
      background: linear-gradient(135deg, #2de1fc 0%, #7b5ce0 100%);
      color: #081226;
    }

    .footer-desc {
      font-size: 14px;
      line-height: 1.85;
      color: rgba(234, 244, 255, 0.58);
      max-width: 360px;
      margin-bottom: 0;
    }

    .footer-title {
      font-size: 13px;
      font-weight: 700;
      letter-spacing: .12em;
      color: rgba(234, 244, 255, 0.85);
      margin-bottom: 20px;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 11px;
      font-size: 14px;
    }

    .footer-links a {
      color: rgba(234, 244, 255, 0.58);
      transition: color .2s ease, padding-left .2s ease;
    }

    .footer-links a:hover {
      color: var(--accent);
      padding-left: 4px;
    }

    .footer-bottom {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      padding: 24px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin-top: 34px;
      color: rgba(234, 244, 255, 0.38);
      font-size: 13px;
    }

    .footer-bottom span:last-child {
      text-align: right;
    }

    /* Responsive =============================== */
    @media (max-width: 1199.98px) {
      .process-steps {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
      }
    }

    @media (max-width: 991.98px) {
      .header-actions .text-link {
        display: none;
      }

      .split-wrap {
        grid-template-columns: 1fr;
      }

      .split-image {
        order: 2;
      }

      .split-copy {
        order: 1;
      }

      .faq-wrap {
        grid-template-columns: 1fr;
      }

      .faq-intro {
        position: static;
      }

      .category-hero {
        min-height: auto;
      }
    }

    @media (max-width: 767.98px) {
      .process-steps {
        grid-template-columns: 1fr;
      }

      .footer-bottom span {
        width: 100%;
      }

      .footer-bottom span:last-child {
        text-align: left;
      }

      .category-hero .hero-meta-list {
        gap: 6px 16px;
        font-size: 13px;
      }
    }

    @media (max-width: 575.98px) {
      .category-hero h1 {
        font-size: 36px;
      }

      .btn-main,
      .btn-ghost {
        width: 100%;
      }

      .hero-cta-group {
        flex-direction: column;
      }

      .category-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 6px;
        -webkit-overflow-scrolling: touch;
      }

      .category-tabs li {
        flex-shrink: 0;
      }

      .accordion-button {
        font-size: 14px;
        padding: 18px 20px;
      }

      .accordion-body {
        padding: 4px 18px 18px;
        font-size: 14px;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
      }
    }

/* roulang page: category2 */
:root {
      --bg-void: #0A0D1A;
      --bg-page: #0B132B;
      --bg-deep: #0A0D1A;
      --primary: #2DE1FC;
      --secondary: #7B5CE0;
      --success: #28E0A5;
      --warn: #F4BB44;
      --text: #EAF4FF;
      --text-2: rgba(234, 244, 255, .72);
      --text-3: rgba(234, 244, 255, .48);
      --white-line: rgba(255, 255, 255, .09);
      --soft-line: linear-gradient(90deg, transparent, rgba(255, 255, 255, .14), transparent);
      --glass-bg: linear-gradient(160deg, rgba(255, 255, 255, .10), rgba(255, 255, 255, .03));
      --radius-sm: 14px;
      --radius: 18px;
      --radius-lg: 28px;
      --shadow-card: inset 0 1px 0 rgba(255, 255, 255, .12), 0 12px 32px -16px rgba(0, 0, 0, .65);
      --shadow-glow: 0 0 22px rgba(45, 225, 252, .32);
      --font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      background:
        radial-gradient(circle at 12% 6%, rgba(123, 92, 224, .10), transparent 420px),
        radial-gradient(circle at 88% 12%, rgba(45, 225, 252, .08), transparent 460px),
        var(--bg-page);
      color: var(--text);
      font-family: var(--font-family);
      line-height: 1.85;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: 0;
      opacity: .22;
      background-image:
        linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
      background-size: 64px 64px;
    }

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

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

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

    button,
    input {
      font-family: inherit;
    }

    .container-xxl {
      position: relative;
      z-index: 1;
    }

    h1,
    h2,
    h3,
    h4,
    h5 {
      font-weight: 700;
      line-height: 1.28;
      letter-spacing: -.01em;
    }

    .glass-frame {
      background: var(--glass-bg);
      border: 1px solid rgba(255, 255, 255, .09);
      border-radius: var(--radius);
      box-shadow: var(--shadow-card);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
    }

    .glass-frame:hover {
      transform: translateY(-4px);
      border-color: rgba(45, 225, 252, .42);
      box-shadow: 0 16px 40px -18px rgba(0, 0, 0, .72), 0 0 24px rgba(45, 225, 252, .12);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1030;
      background: rgba(10, 13, 26, .72);
      border-bottom: 1px solid transparent;
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      transition: background .35s ease, border-color .35s ease, box-shadow .35s ease;
    }

    .site-header.scrolled {
      background: rgba(7, 10, 20, .92);
      border-bottom-color: rgba(45, 225, 252, .16);
      box-shadow: 0 10px 32px -18px rgba(0, 0, 0, .8);
    }

    .header-inner {
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
    }

    .site-logo {
      display: inline-flex;
      align-items: center;
      gap: .6rem;
      font-size: 1.22rem;
      font-weight: 800;
      color: var(--text);
      white-space: nowrap;
    }

    .site-logo:hover {
      color: var(--text);
    }

    .logo-mark {
      width: 42px;
      height: 42px;
      flex: 0 0 42px;
      display: grid;
      place-items: center;
      background: linear-gradient(140deg, var(--primary), var(--secondary));
      color: #081018;
      font-weight: 800;
      font-size: 1.28rem;
      border-radius: 14px;
      box-shadow: 0 0 22px rgba(45, 225, 252, .28);
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: .25rem;
    }

    .nav-link {
      padding: .62rem 1rem;
      border-radius: 999px;
      color: var(--text-2);
      font-size: .95rem;
      font-weight: 500;
      line-height: 1.2;
      display: block;
      transition: background .25s ease, color .25s ease, box-shadow .25s ease, transform .25s ease;
    }

    .nav-link:hover {
      color: var(--text);
      background: rgba(255, 255, 255, .05);
      transform: translateY(-1px);
    }

    .nav-link.active {
      color: #06141c;
      background: linear-gradient(90deg, rgba(45, 225, 252, .95), rgba(123, 92, 224, .7));
      font-weight: 700;
      box-shadow: 0 0 20px rgba(45, 225, 252, .22);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: .45rem;
      padding: .74rem 1.3rem;
      border-radius: 14px;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      color: #06141c;
      font-size: .95rem;
      font-weight: 700;
      white-space: nowrap;
      box-shadow: 0 0 20px rgba(45, 225, 252, .22);
      transition: box-shadow .3s ease, transform .3s ease, color .3s ease;
    }

    .nav-cta:hover {
      color: #06141c;
      transform: translateY(-2px);
      box-shadow: 0 8px 28px -8px rgba(45, 225, 252, .7), 0 0 30px rgba(45, 225, 252, .26);
    }

    .menu-toggle {
      width: 46px;
      height: 46px;
      display: inline-flex;
      flex-direction: column;
      gap: 5px;
      align-items: center;
      justify-content: center;
      border: 1px solid rgba(45, 225, 252, .45);
      border-radius: 12px;
      background: rgba(45, 225, 252, .07);
      padding: 0;
      box-shadow: none;
      transition: background .25s ease, border-color .25s ease;
    }

    .menu-toggle:hover,
    .menu-toggle:focus {
      background: rgba(45, 225, 252, .14);
      border-color: var(--primary);
      box-shadow: none;
    }

    .menu-toggle span {
      display: block;
      width: 20px;
      height: 2px;
      border-radius: 2px;
      background: var(--primary);
      transition: transform .25s ease, opacity .25s ease;
    }

    .mobile-menu {
      display: none;
      background: rgba(7, 10, 20, .96);
      border-top: 1px solid rgba(45, 225, 252, .18);
      padding: .7rem 1.25rem 1.3rem;
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
    }

    .site-header.nav-open .mobile-menu {
      display: block;
    }

    .mobile-nav-link {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: .95rem .4rem;
      border-bottom: 1px solid rgba(255, 255, 255, .07);
      color: var(--text-2);
      font-weight: 500;
    }

    .mobile-nav-link:hover {
      color: var(--primary);
    }

    .mobile-nav-link.active {
      color: var(--primary);
      font-weight: 700;
    }

    .mobile-nav-cta {
      display: block;
      margin-top: 1.1rem;
      text-align: center;
      padding: .85rem 1rem;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      color: #06141c;
      font-weight: 700;
      border-radius: 14px;
      box-shadow: 0 0 18px rgba(45, 225, 252, .2);
    }

    .mobile-nav-cta:hover {
      color: #06141c;
      opacity: .92;
    }

    .cat-banner {
      position: relative;
      min-height: 420px;
      display: flex;
      align-items: center;
      padding: 100px 0 70px;
      background-size: cover;
      background-position: center;
      background-color: var(--bg-deep);
      overflow: hidden;
    }

    .cat-banner::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(circle at 78% 20%, rgba(123, 92, 224, .35), transparent 360px),
        radial-gradient(circle at 18% 80%, rgba(45, 225, 252, .18), transparent 300px),
        linear-gradient(105deg, rgba(10, 13, 26, .96) 0%, rgba(11, 19, 43, .86) 58%, rgba(12, 26, 58, .74) 100%);
    }

    .cat-banner * {
      position: relative;
      z-index: 1;
    }

    .banner-kicker {
      display: inline-flex;
      align-items: center;
      gap: .5rem;
      padding: .38rem .9rem;
      border: 1px solid rgba(45, 225, 252, .32);
      background: rgba(45, 225, 252, .08);
      border-radius: 999px;
      color: var(--primary);
      font-size: .86rem;
      font-weight: 600;
      margin-bottom: 1.2rem;
    }

    .cat-banner h1 {
      color: #fff;
      font-size: clamp(2.1rem, 5vw, 3.8rem);
      font-weight: 800;
      max-width: 820px;
      margin-bottom: 1.1rem;
    }

    .cat-banner .banner-lead {
      max-width: 780px;
      color: var(--text-2);
      font-size: 1.12rem;
      line-height: 1.9;
      margin-bottom: 1.8rem;
    }

    .btn-action,
    .btn-ghost {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: .45rem;
      padding: .85rem 1.6rem;
      border-radius: 14px;
      font-size: .98rem;
      font-weight: 700;
      min-height: 48px;
      transition: transform .25s ease, box-shadow .3s ease, background .3s ease, border-color .3s ease;
    }

    .btn-action {
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      color: #06141c;
      box-shadow: 0 0 20px rgba(45, 225, 252, .28);
    }

    .btn-action:hover {
      color: #06141c;
      transform: translateY(-2px);
      box-shadow: 0 10px 32px -8px rgba(45, 225, 252, .68);
    }

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

    .btn-ghost {
      background: rgba(255, 255, 255, .05);
      border: 1px solid rgba(255, 255, 255, .18);
      color: #fff;
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
    }

    .btn-ghost:hover {
      color: #fff;
      border-color: var(--primary);
      background: rgba(45, 225, 252, .10);
      transform: translateY(-2px);
      box-shadow: 0 8px 28px -12px rgba(45, 225, 252, .32);
    }

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

    .hero-trust {
      display: flex;
      flex-wrap: wrap;
      gap: .5rem .9rem;
      margin-top: 1.6rem;
      color: var(--text-3);
      font-size: .9rem;
    }

    .hero-trust span {
      display: inline-flex;
      align-items: center;
      gap: .35rem;
    }

    .hero-trust span::before {
      content: "";
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: var(--success);
      box-shadow: 0 0 8px rgba(40, 224, 165, .8);
    }

    .cat-subnav {
      position: relative;
      z-index: 5;
      margin-top: -28px;
      padding-bottom: 18px;
    }

    .subnav-shell {
      display: inline-flex;
      flex-wrap: wrap;
      gap: .35rem;
      justify-content: flex-start;
      align-items: center;
      padding: .5rem;
      border-radius: 999px;
      background: linear-gradient(160deg, rgba(30, 42, 74, .88), rgba(17, 24, 46, .9));
      border: 1px solid rgba(255, 255, 255, .08);
      box-shadow: 0 14px 36px -18px rgba(0, 0, 0, .8);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
    }

    .subnav-title {
      display: inline-flex;
      align-items: center;
      padding: .5rem 1.15rem;
      color: var(--text-3);
      font-size: .84rem;
      font-weight: 500;
      white-space: nowrap;
    }

    .subnav-item {
      display: inline-flex;
      align-items: center;
      padding: .62rem 1.18rem;
      border-radius: 999px;
      color: var(--text-2);
      font-size: .92rem;
      font-weight: 500;
      transition: color .25s ease, background .25s ease, box-shadow .25s ease;
    }

    .subnav-item:hover {
      color: var(--text);
      background: rgba(255, 255, 255, .05);
    }

    .subnav-item.active {
      color: #06141c;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      font-weight: 700;
      box-shadow: 0 0 18px rgba(45, 225, 252, .22);
    }

    .section-block {
      padding: 84px 0;
      position: relative;
    }

    .section-block:nth-of-type(even) {
      background: linear-gradient(180deg, rgba(8, 12, 26, .15), rgba(8, 12, 26, .45));
    }

    .section-head {
      max-width: 820px;
      margin-bottom: 46px;
    }

    .section-head.center {
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: .5rem;
      color: var(--primary);
      font-size: .88rem;
      font-weight: 700;
      letter-spacing: .05em;
      margin-bottom: .8rem;
    }

    .section-kicker::before {
      content: "";
      width: 18px;
      height: 2px;
      background: linear-gradient(90deg, var(--primary), transparent);
      border-radius: 2px;
    }

    .section-head h2 {
      font-size: clamp(1.7rem, 3.4vw, 2.5rem);
      font-weight: 800;
      color: #fff;
      margin: 0 0 .7rem;
    }

    .section-head p {
      color: var(--text-2);
      font-size: 1rem;
      margin: 0;
    }

    .media-card {
      display: grid;
      grid-template-columns: 1.02fr .98fr;
      border-radius: var(--radius-lg);
      padding: 0;
      overflow: hidden;
      margin-bottom: 26px;
    }

    .media-card.flip .media-image {
      order: 2;
    }

    .media-media {
      position: relative;
      min-height: 280px;
      overflow: hidden;
      display: flex;
      align-items: center;
    }

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

    .media-card:hover .media-media img {
      transform: scale(1.03);
    }

    .media-media::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 50%, rgba(10, 13, 26, .28));
      pointer-events: none;
    }

    .media-body {
      padding: 38px 44px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .media-tag {
      display: inline-flex;
      align-items: center;
      align-self: flex-start;
      color: var(--primary);
      font-size: .82rem;
      font-weight: 700;
      letter-spacing: .08em;
      padding: .3rem .8rem;
      border: 1px solid rgba(45, 225, 252, .24);
      background: rgba(45, 225, 252, .07);
      border-radius: 999px;
      margin-bottom: 1rem;
    }

    .media-body h3 {
      font-size: 1.55rem;
      font-weight: 750;
      margin-bottom: .8rem;
    }

    .media-body p {
      color: var(--text-2);
      margin: 0;
    }

    .tag-strip {
      display: flex;
      flex-wrap: wrap;
      gap: .55rem;
      margin-top: 1.25rem;
    }

    .tag-strip span {
      display: inline-flex;
      align-items: center;
      gap: .4rem;
      color: var(--text-2);
      font-size: .84rem;
    }

    .tag-strip span::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 6px rgba(45, 225, 252, .6);
    }

    .workflow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .workflow-card {
      padding: 28px 24px;
      border-radius: 22px;
    }

    .workflow-num {
      font-size: 2rem;
      font-weight: 800;
      line-height: 1;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      margin-bottom: 1rem;
    }

    .workflow-card h3 {
      font-size: 1.14rem;
      font-weight: 700;
      margin-bottom: .5rem;
    }

    .workflow-card p {
      color: var(--text-2);
      font-size: .96rem;
    }

    .blueprint-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .blueprint-card {
      border-radius: 20px;
      padding: 30px 26px;
      position: relative;
      overflow: hidden;
    }

    .blueprint-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: linear-gradient(90deg, var(--primary), transparent);
      opacity: .8;
    }

    .bp-icon {
      width: 44px;
      height: 44px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      background: rgba(45, 225, 252, .08);
      border: 1px solid rgba(45, 225, 252, .22);
      border-radius: 14px;
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 1.1rem;
    }

    .blueprint-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: .45rem;
    }

    .blueprint-card p {
      color: var(--text-2);
      font-size: .95rem;
      margin: 0;
    }

    .nearby-wrap {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 22px;
    }

    .nearby-card {
      display: flex;
      align-items: center;
      gap: 1.2rem;
      border-radius: 22px;
      padding: 1.2rem;
    }

    .nearby-thumb {
      width: 124px;
      height: 92px;
      flex: 0 0 124px;
      overflow: hidden;
      border-radius: 16px;
    }

    .nearby-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .45s ease;
    }

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

    .nearby-info h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: .3rem;
    }

    .nearby-info p {
      color: var(--text-2);
      font-size: .94rem;
      margin: 0 0 .65rem;
    }

    .text-link {
      display: inline-flex;
      align-items: center;
      gap: .3rem;
      color: var(--primary);
      font-weight: 600;
      font-size: .92rem;
    }

    .text-link:hover {
      filter: brightness(1.2);
    }

    .back-home-area {
      margin-top: 56px;
      text-align: center;
    }

    .faq-section {
      background: linear-gradient(180deg, rgba(8, 12, 26, .35), rgba(8, 12, 26, .12));
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: .9fr 1.6fr;
      gap: 46px;
    }

    .faq-intro h2 {
      font-size: clamp(1.7rem, 3vw, 2.4rem);
      color: #fff;
      margin-bottom: 1rem;
    }

    .faq-intro p {
      color: var(--text-2);
    }

    .accordion-item.custom-qi {
      background: rgba(255, 255, 255, .045);
      border: 1px solid rgba(255, 255, 255, .09);
      border-radius: 18px !important;
      margin-bottom: 14px;
      overflow: hidden;
      backdrop-filter: blur(15px);
      -webkit-backdrop-filter: blur(15px);
      transition: border-color .3s ease, box-shadow .3s ease;
    }

    .accordion-item.custom-qi:hover {
      border-color: rgba(45, 225, 252, .24);
    }

    .accordion-button {
      background: transparent;
      border: 0;
      box-shadow: none;
      color: var(--text);
      font-size: 1.03rem;
      font-weight: 600;
      padding: 1.1rem 1.35rem;
      line-height: 1.6;
    }

    .accordion-button:not(.collapsed) {
      background: rgba(45, 225, 252, .07);
      color: #fff;
      box-shadow: none;
    }

    .accordion-button:not(.collapsed)::after {
      transform: rotate(180deg);
    }

    .accordion-button:focus {
      box-shadow: 0 0 0 2px rgba(45, 225, 252, .28);
      outline: none;
    }

    .accordion-button::after {
      background-image: none;
      content: "+";
      width: 32px;
      height: 32px;
      border: 1px solid rgba(45, 225, 252, .35);
      background: rgba(45, 225, 252, .08);
      color: var(--primary);
      border-radius: 10px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      line-height: 1;
      font-weight: 400;
      transform: none;
      transition: transform .25s ease, background .25s ease, color .25s ease;
    }

    .accordion-button:not(.collapsed)::after {
      content: "−";
      color: #06141c;
      background: var(--primary);
      border-color: var(--primary);
      transform: rotate(0);
    }

    .accordion-body {
      color: var(--text-2);
      padding: 0 1.35rem 1.3rem;
    }

    .cta-area {
      padding: 92px 0 84px;
    }

    .cta-panel {
      position: relative;
      overflow: hidden;
      border-radius: 30px;
      padding: 72px 24px 80px;
      text-align: center;
      background:
        radial-gradient(circle at 28% 10%, rgba(123, 92, 224, .28), transparent 300px),
        radial-gradient(circle at 75% 90%, rgba(45, 225, 252, .15), transparent 300px),
        rgba(14, 20, 42, .55);
      border: 1px solid rgba(255, 255, 255, .1);
    }

    .cta-panel::after {
      content: "";
      position: absolute;
      inset: 0;
      background-image: linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
      background-size: 60px 60px;
      pointer-events: none;
    }

    .cta-panel>* {
      position: relative;
      z-index: 1;
    }

    .cta-panel h2 {
      font-size: clamp(1.5rem, 3vw, 2.5rem);
      color: #fff;
      font-weight: 800;
      max-width: 780px;
      margin: 0 auto 1.1rem;
    }

    .cta-panel p {
      max-width: 720px;
      margin: 0 auto 2rem;
      color: var(--text-2);
    }

    .cta-btns {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: .8rem;
    }

    .site-footer {
      background: rgba(7, 10, 20, .92);
      border-top: 1px solid rgba(45, 225, 252, .14);
      padding: 58px 0 26px;
      margin-top: 0;
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: .6rem;
      font-size: 1.15rem;
      font-weight: 800;
      color: #fff;
    }

    .footer-desc {
      color: var(--text-2);
      font-size: .92rem;
      max-width: 360px;
      margin-top: 1rem;
    }

    .footer-title {
      color: #fff;
      font-size: .96rem;
      font-weight: 700;
      margin-bottom: .8rem;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: .3rem;
    }

    .footer-links a {
      color: var(--text-2);
      font-size: .9rem;
      line-height: 1.8;
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, .07);
      margin-top: 30px;
      padding-top: 18px;
      display: flex;
      flex-wrap: wrap;
      gap: .4rem 1.6rem;
      justify-content: space-between;
      color: var(--text-3);
      font-size: .86rem;
    }

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

    @media (max-width: 991.98px) {
      .header-inner {
        height: 60px;
      }

      .cat-banner {
        min-height: auto;
        padding: 70px 0 52px;
      }

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

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

      .faq-wrap {
        grid-template-columns: 1fr;
        gap: 34px;
      }

      .media-card {
        grid-template-columns: 1fr;
      }

      .media-card.flip .media-image {
        order: initial;
      }

      .media-media {
        min-height: 220px;
        max-height: 330px;
      }

      .media-body {
        padding: 30px 28px;
      }

      .nearby-wrap {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 767.98px) {
      .header-inner {
        height: 60px;
      }

      .logo-mark {
        width: 38px;
        height: 38px;
        flex-basis: 38px;
        font-size: 1.14rem;
        border-radius: 12px;
      }

      .site-logo {
        font-size: 1.12rem;
      }

      .cat-banner h1 {
        font-size: 2.2rem;
      }

      .cat-banner .banner-lead {
        font-size: 1rem;
      }

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

      .section-block {
        padding: 50px 0;
      }

      .subnav-shell {
        border-radius: 24px;
        width: 100%;
      }

      .subnav-title {
        width: 100%;
        padding-left: .2rem;
      }

      .subnav-item {
        padding: .55rem .9rem;
      }

      .workflow-grid,
      .blueprint-grid {
        grid-template-columns: 1fr;
      }

      .media-body {
        padding: 24px 20px;
      }

      .media-body h3 {
        font-size: 1.32rem;
      }

      .cta-panel {
        padding: 54px 18px;
        border-radius: 24px;
      }

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

      .tag-strip {
        gap: .45rem;
      }
    }

    @media (max-width: 420px) {
      .cat-banner h1 {
        font-size: 1.95rem;
      }

      .header-actions .nav-cta {
        display: none;
      }
    }