/* roulang page: index */
:root {
  --magenta: #E11D74;
  --cyan: #00D4AA;
  --amber: #FFB020;
  --bg: #0B0E14;
  --section-bg: #131A24;
  --card-bg: #1A222E;
  --text: #F2F5FA;
  --muted: #9AA8B9;
  --weak: #6B7688;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 12px;
  --radius-btn: 8px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.5);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    radial-gradient(circle at 18% 25%, rgba(225, 29, 116, 0.12), transparent 34%),
    radial-gradient(circle at 82% 72%, rgba(0, 212, 170, 0.10), transparent 36%);
  background-size: 48px 48px, 48px 48px, 100% 100%, 100% 100%;
  color: var(--text);
  line-height: 1.75;
  overflow-x: hidden;
}

body::selection,
::selection {
  background: var(--magenta);
  color: #fff;
}

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

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

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

ul,
ol {
  list-style: none;
}

.grid-container {
  max-width: 1200px;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  position: relative;
  padding: 88px 0;
  scroll-margin-top: 80px;
}

.section-alt {
  background: var(--section-bg);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.section-head {
  max-width: 820px;
  margin-bottom: 48px;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--magenta);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  position: relative;
  padding-left: 18px;
  margin-bottom: 14px;
}

.section-kicker::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3em;
  width: 4px;
  height: 1.2em;
  background: var(--magenta);
  border-radius: 999px;
  box-shadow: 0 0 16px rgba(225, 29, 116, 0.6);
}

.section-title {
  font-size: clamp(1.85rem, 3vw, 2.4rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.section-desc {
  color: var(--muted);
  font-size: 1rem;
  margin-bottom: 0;
}

.text-gradient {
  background: linear-gradient(100deg, var(--magenta) 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn i {
  font-size: 0.95rem;
}

.btn-amber {
  background: var(--amber);
  color: #1A1110;
  box-shadow: 0 6px 20px rgba(255, 176, 32, 0.22);
}

.btn-amber:hover {
  background: #FFC248;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(255, 176, 32, 0.32);
}

.btn-amber:active {
  transform: scale(0.97);
}

.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--text);
}

.btn-outline:hover {
  background: rgba(225, 29, 116, 0.15);
  border-color: var(--magenta);
  transform: translateY(-2px);
}

.btn-outline:active {
  transform: scale(0.97);
}

.btn-block {
  width: 100%;
}

.btn:focus-visible,
.menu-toggle:focus-visible,
.site-input:focus-visible {
  outline: 2px solid var(--magenta);
  outline-offset: 3px;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11, 14, 20, 0.55);
  -webkit-backdrop-filter: blur(12px) saturate(150%);
  backdrop-filter: blur(12px) saturate(150%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  background: rgba(11, 14, 20, 0.94);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

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

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--magenta), var(--cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  box-shadow: 0 0 20px rgba(225, 29, 116, 0.35);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-size: 1.05rem;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.brand-text small {
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  margin: 0;
  padding: 0;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
  position: relative;
  padding: 8px 2px;
}

.nav-links a:hover {
  color: var(--magenta);
}

.nav-links a.active {
  color: var(--text);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--magenta);
  border-radius: 999px;
  box-shadow: 0 0 12px rgba(225, 29, 116, 0.6);
}

.nav-mobile-cta {
  display: none;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1.2rem;
  cursor: pointer;
}

.hero {
  position: relative;
  min-height: 86vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-size: cover;
  background-position: center;
  padding: 150px 0 80px;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 14, 20, 0.78) 0%, rgba(11, 14, 20, 0.42) 55%, rgba(11, 14, 20, 0.92) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 980px;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--magenta);
  color: #fff;
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 24px;
  box-shadow: 0 0 24px rgba(225, 29, 116, 0.45);
}

.hero h1 {
  font-size: clamp(2.4rem, 5.2vw, 4rem);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.02em;
  margin-bottom: 26px;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 720px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 42px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  display: flex;
  justify-content: center;
  padding-top: 9px;
  z-index: 3;
}

.hero-scroll span {
  width: 4px;
  height: 9px;
  background: var(--magenta);
  border-radius: 999px;
  animation: scrollDown 1.6s infinite;
}

@keyframes scrollDown {
  0% {
    opacity: 0.3;
    transform: translateY(0);
  }
  50% {
    opacity: 1;
    transform: translateY(8px);
  }
  100% {
    opacity: 0.3;
    transform: translateY(0);
  }
}

.stat-item {
  text-align: center;
  padding: 22px 12px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  height: 100%;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

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

.stat-num {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--magenta);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  margin-bottom: 8px;
}

.stat-label {
  color: var(--muted);
  font-size: 0.95rem;
}

.timeline {
  position: relative;
  margin: 0;
  padding: 0;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, var(--magenta), var(--cyan));
  opacity: 0.4;
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 40px 48px;
}

.timeline-item:nth-child(odd) {
  text-align: right;
}

.timeline-item:nth-child(even) {
  margin-left: 50%;
  text-align: left;
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: 8px;
  right: -7px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--magenta);
  box-shadow: 0 0 0 5px rgba(225, 29, 116, 0.18), 0 0 22px rgba(225, 29, 116, 0.55);
}

.timeline-item:nth-child(even)::before {
  right: auto;
  left: -7px;
}

.timeline-time {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--amber);
  font-weight: 800;
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.timeline-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.timeline-place {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 6px;
}

.timeline-desc {
  color: var(--muted);
  font-size: 0.92rem;
  margin-top: 8px;
}

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

.bento-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

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

.bento-card--main {
  grid-column: span 2;
  grid-row: span 2;
  padding: 0;
  min-height: 430px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: flex-end;
  border-color: rgba(255, 255, 255, 0.12);
}

.bento-card--main:hover {
  border-color: var(--cyan);
}

.bento-main-body {
  width: 100%;
  padding: 32px;
  background: linear-gradient(180deg, transparent, rgba(11, 14, 20, 0.92));
}

.bento-main-body h3 {
  font-size: 1.4rem;
  font-weight: 800;
  margin: 12px 0 8px;
}

.bento-main-body p {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 0;
}

.bento-icon {
  display: inline-flex;
  width: 52px;
  height: 52px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(0, 212, 170, 0.12);
  color: var(--cyan);
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.bento-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.bento-card p {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--magenta);
  color: #fff;
  border-radius: 999px;
  padding: 4px 14px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.tag-cyan {
  background: var(--cyan);
  color: #06281F;
}

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

.ticket {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.ticket:hover {
  transform: translateY(-4px);
  border-color: var(--magenta);
  box-shadow: var(--shadow-hover);
}

.ticket.featured {
  border-color: var(--cyan);
  transform: scale(1.04);
  box-shadow: 0 0 42px rgba(0, 212, 170, 0.14);
}

.ticket.featured:hover {
  transform: scale(1.04) translateY(-4px);
  border-color: var(--cyan);
}

.ticket-ribbon {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--cyan);
  color: #06281F;
  border-radius: 999px;
  padding: 4px 16px;
  font-size: 0.78rem;
  font-weight: 800;
  white-space: nowrap;
}

.ticket-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 8px;
}

.ticket-price {
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--amber);
  line-height: 1.2;
  margin-bottom: 20px;
  font-variant-numeric: tabular-nums;
}

.ticket-price small {
  font-size: 0.95rem;
  color: var(--muted);
  margin-right: 2px;
}

.ticket-features {
  margin: 0 0 28px;
  padding: 0;
  flex: 1;
}

.ticket-features li {
  position: relative;
  color: var(--muted);
  font-size: 0.92rem;
  padding: 6px 0 6px 28px;
}

.ticket-features li::before {
  content: "\f058";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  color: var(--cyan);
  position: absolute;
  left: 0;
  top: 6px;
}

.register-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 44px;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.register-card::before {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -80px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(225, 29, 116, 0.18), transparent 70%);
  pointer-events: none;
}

.register-card .section-head {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.site-input,
.site-select {
  width: 100%;
  background: var(--bg);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text);
  padding: 13px 16px;
  border-radius: var(--radius-btn);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
  -webkit-appearance: none;
  appearance: none;
}

.site-input::placeholder {
  color: var(--weak);
}

.site-input:focus,
.site-select:focus {
  border-color: var(--magenta);
  box-shadow: 0 0 0 3px rgba(225, 29, 116, 0.2);
}

.form-field {
  margin-bottom: 18px;
}

.register-side {
  position: relative;
  z-index: 1;
  padding-left: 36px;
  border-left: 1px solid rgba(255, 255, 255, 0.08);
}

.register-side h3 {
  font-size: 1.25rem;
  font-weight: 800;
  margin: 16px 0 10px;
}

.register-side p {
  color: var(--muted);
  font-size: 0.95rem;
}

.check-list {
  margin-top: 18px;
  padding: 0;
}

.check-list li {
  position: relative;
  color: var(--muted);
  padding: 7px 0 7px 28px;
  font-size: 0.93rem;
}

.check-list li::before {
  content: "\f00c";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  color: var(--cyan);
  position: absolute;
  left: 0;
  top: 7px;
}

.info-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 920px;
  margin: 0 auto;
}

.info-card {
  display: flex;
  gap: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

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

.info-thumb {
  width: 120px;
  height: 80px;
  flex-shrink: 0;
  border-radius: 8px;
  overflow: hidden;
  background: var(--section-bg);
}

.info-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.info-body {
  flex: 1;
  min-width: 0;
}

.info-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.info-body h3 a:hover {
  color: var(--magenta);
}

.info-body p {
  color: var(--muted);
  font-size: 0.92rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 0;
}

.info-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
}

.info-meta time {
  color: var(--weak);
  font-size: 0.8rem;
}

.empty-state {
  text-align: center;
  color: var(--muted);
  padding: 48px 24px;
  background: var(--card-bg);
  border: 1px dashed rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.faq-item[open] {
  border-color: var(--magenta);
  box-shadow: 0 0 24px rgba(225, 29, 116, 0.08);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.5;
}

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

.faq-item summary:hover {
  color: var(--magenta);
}

.faq-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
}

.faq-icon::before {
  content: "+";
  font-size: 1.4rem;
  line-height: 1;
  color: var(--magenta);
}

.faq-item[open] .faq-icon::before {
  content: "−";
}

.faq-answer {
  padding: 0 24px 22px;
  color: var(--muted);
  font-size: 0.95rem;
}

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

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(11, 14, 20, 0.84);
}

.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 680px;
  margin: 0 auto;
  padding: 0 24px;
}

.cta-inner h2 {
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.cta-inner p {
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 32px;
}

.site-footer {
  background: var(--bg);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 60px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 44px;
  margin-bottom: 40px;
}

.footer-brand {
  font-size: 1.25rem;
  font-weight: 900;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-desc {
  color: var(--muted);
  font-size: 0.92rem;
  max-width: 320px;
}

.site-footer h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  color: var(--muted);
  padding: 5px 0;
  font-size: 0.92rem;
}

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

.footer-contact {
  margin: 0;
  padding: 0;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--muted);
  font-size: 0.92rem;
  padding: 5px 0;
}

.footer-contact i {
  color: var(--cyan);
  margin-top: 5px;
  width: 16px;
  text-align: center;
}

.footer-copy {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  text-align: center;
  color: var(--weak);
  font-size: 0.8rem;
}

@media (max-width: 1023px) {
  .section {
    padding: 72px 0;
  }

  .hero {
    min-height: 70vh;
  }

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

  .tickets-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: 20px;
  }

  .ticket {
    min-width: 280px;
    scroll-snap-align: start;
  }

  .ticket.featured {
    transform: scale(1);
  }

  .ticket.featured:hover {
    transform: translateY(-4px);
  }

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

  .register-side {
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 28px;
  }
}

@media (max-width: 767px) {
  .section {
    padding: 56px 0;
  }

  .grid-container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .header-inner {
    height: 64px;
  }

  .header-cta {
    display: none;
  }

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

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(11, 14, 20, 0.98);
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    padding: 0;
    transition: max-height 0.35s ease, padding 0.35s ease;
    z-index: 999;
  }

  .nav-links.open {
    max-height: 480px;
    padding: 16px 24px 24px;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 13px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 1rem;
  }

  .nav-links a.active::after {
    display: none;
  }

  .nav-mobile-cta {
    display: block;
    margin-top: 16px;
  }

  .nav-mobile-cta .btn {
    width: 100%;
  }

  .hero {
    min-height: auto;
    padding: 130px 0 64px;
  }

  .hero h1 {
    font-size: 2.1rem;
    line-height: 1.25;
  }

  .hero-sub {
    font-size: 1rem;
  }

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

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

  .stat-item {
    margin-bottom: 16px;
  }

  .timeline::before {
    left: 6px;
    transform: none;
  }

  .timeline-item,
  .timeline-item:nth-child(even) {
    width: 100%;
    margin-left: 0;
    text-align: left;
    padding: 0 0 36px 34px;
  }

  .timeline-item::before,
  .timeline-item:nth-child(even)::before {
    left: -1px;
    right: auto;
  }

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

  .bento-card--main {
    grid-column: span 1;
    grid-row: span 1;
    min-height: 300px;
  }

  .bento-main-body {
    padding: 22px;
  }

  .register-card {
    padding: 24px;
  }

  .info-card {
    flex-direction: column;
  }

  .info-thumb {
    width: 100%;
    height: 140px;
  }

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

  .footer-copy {
    line-height: 1.6;
  }
}

@media (max-width: 520px) {
  .brand-text strong {
    font-size: 0.96rem;
  }

  .brand-text small {
    font-size: 0.68rem;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    font-size: 1.05rem;
  }

  .hero h1 {
    font-size: 1.85rem;
  }

  .section-title {
    font-size: 1.65rem;
  }

  .register-card {
    padding: 20px;
  }

  .ticket {
    min-width: 260px;
  }
}

/* roulang page: category1 */
:root{
  --magenta:#E11D74;
  --teal:#00D4AA;
  --amber:#FFB020;
  --bg:#0B0E14;
  --panel:#131A24;
  --card:#1A222E;
  --border:rgba(255,255,255,0.08);
  --text:#F2F5FA;
  --text2:#9AA8B9;
  --text3:#6B7688;
  --radius:12px;
  --radius-sm:8px;
  --shadow:0 8px 24px rgba(0,0,0,0.35);
  --shadow-hover:0 12px 32px rgba(0,0,0,0.5);
  --glow:rgba(225,29,116,0.45);
  --space:80px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size:44px 44px;
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:color .25s ease;}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;cursor:pointer;}
ul{list-style:none;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:80px 0;}
@media(max-width:767px){.section{padding:56px 0;}}
.section-head{margin-bottom:48px;position:relative;}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:0.06em;color:var(--teal);text-transform:uppercase;background:rgba(0,212,170,0.1);border:1px solid rgba(0,212,170,0.22);padding:5px 14px;border-radius:999px;margin-bottom:14px;}
.section-head h2{font-size:32px;font-weight:800;line-height:1.2;margin-bottom:12px;letter-spacing:-0.02em;}
.section-head h2::before{content:"";display:inline-block;width:4px;height:24px;background:var(--magenta);border-radius:999px;margin-right:14px;vertical-align:middle;}
.section-head p{color:var(--text2);font-size:15px;max-width:680px;}
@media(max-width:767px){.section-head h2{font-size:26px;}}

/* ===== Header ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:68px;
  background:rgba(11,14,20,0.55);
  backdrop-filter:blur(12px) saturate(150%);
  -webkit-backdrop-filter:blur(12px) saturate(150%);
  border-bottom:1px solid rgba(255,255,255,0.06);
  transition:background .35s ease,box-shadow .35s ease;
}
.site-header.scrolled{
  background:rgba(11,14,20,0.94);
  box-shadow:0 4px 12px rgba(0,0,0,0.4);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--magenta),rgba(225,29,116,0.6));display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;box-shadow:0 0 16px rgba(225,29,116,0.35);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;color:#fff;letter-spacing:0.01em;}
.brand-text small{font-size:11.5px;color:var(--text2);letter-spacing:0.08em;font-weight:500;}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{font-size:14px;font-weight:500;color:var(--text2);padding:6px 2px;position:relative;transition:color .25s;}
.nav-links a:hover{color:var(--magenta);}
.nav-links a.active{color:#fff;}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--magenta);border-radius:2px;box-shadow:0 0 8px var(--glow);}
.header-actions{display:flex;align-items:center;gap:12px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:14px;font-weight:600;border-radius:8px;padding:10px 22px;border:none;transition:all .25s ease;outline:none;}
.btn:focus-visible{outline:2px solid var(--magenta);outline-offset:2px;}
.btn:active{transform:scale(0.97);}
.btn-amber{background:var(--amber);color:#0B0E14;font-weight:700;box-shadow:0 4px 14px rgba(255,176,32,0.28);}
.btn-amber:hover{background:#ffc257;transform:translateY(-2px);box-shadow:0 8px 20px rgba(255,176,32,0.35);}
.btn-outline{background:transparent;border:1.5px solid rgba(255,255,255,0.25);color:#fff;}
.btn-outline:hover{background:rgba(225,29,116,0.15);border-color:var(--magenta);transform:translateY(-2px);}
.btn-magenta{background:var(--magenta);color:#fff;box-shadow:0 4px 16px rgba(225,29,116,0.3);}
.btn-magenta:hover{background:#f62a88;transform:translateY(-2px);}
.header-cta{padding:9px 20px;font-size:13px;}
.menu-toggle{display:none;background:none;border:none;color:#fff;font-size:22px;width:42px;height:42px;border-radius:8px;}
.menu-toggle:hover{background:rgba(255,255,255,0.08);}
.nav-mobile-cta{display:none;}
@media(max-width:1023px){
  .nav-links{position:fixed;top:68px;left:0;right:0;background:rgba(11,14,20,0.97);flex-direction:column;align-items:flex-start;padding:20px 28px 28px;gap:18px;border-bottom:1px solid var(--border);transform:translateY(-120%);opacity:0;transition:transform .3s ease,opacity .3s ease;backdrop-filter:blur(16px);}
  .nav-links.open{transform:translateY(0);opacity:1;}
  .menu-toggle{display:flex;align-items:center;justify-content:center;}
  .nav-mobile-cta{display:block;width:100%;margin-top:8px;}
  .nav-mobile-cta .btn{width:100%;}
  .header-cta{display:none;}
}

/* ===== Hero / Page Banner ===== */
.page-hero{
  position:relative;
  min-height:56vh;
  display:flex;
  align-items:center;
  padding-top:88px;
  background:
    linear-gradient(to bottom,rgba(11,14,20,0.94) 0%,rgba(11,14,20,0.78) 55%,rgba(11,14,20,0.9) 100%),
    url('/assets/images/backpic/back-1.webp') center 60% / cover no-repeat;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;top:-120px;right:-80px;width:400px;height:400px;
  background:radial-gradient(circle,rgba(225,29,116,0.25),transparent 65%);
  pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;bottom:-160px;left:-60px;width:360px;height:360px;
  background:radial-gradient(circle,rgba(0,212,170,0.16),transparent 66%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;padding-top:32px;padding-bottom:56px;}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--magenta);color:#fff;font-size:12.5px;font-weight:600;letter-spacing:0.05em;padding:6px 16px;border-radius:999px;box-shadow:0 0 20px rgba(225,29,116,0.4);margin-bottom:20px;}
.page-hero h1{font-size:44px;font-weight:900;line-height:1.18;letter-spacing:-0.02em;margin-bottom:18px;max-width:780px;color:#fff;}
.page-hero h1 .highlight{color:var(--magenta);}
.page-hero .hero-desc{font-size:17px;color:var(--text2);max-width:620px;margin-bottom:30px;line-height:1.8;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.hero-tags .tag{font-size:12.5px;font-weight:600;color:var(--teal);background:rgba(0,212,170,0.1);border:1px solid rgba(0,212,170,0.24);padding:5px 14px;border-radius:999px;}
.hero-btn-group{display:flex;flex-wrap:wrap;gap:16px;align-items:center;}
.hero-meta{display:flex;flex-wrap:wrap;gap:24px;margin-top:36px;padding-top:24px;border-top:1px solid rgba(255,255,255,0.08);color:var(--text3);font-size:13px;}
.hero-meta span i{margin-right:6px;color:var(--magenta);}
@media(max-width:767px){
  .page-hero{min-height:auto;padding-top:72px;}
  .page-hero h1{font-size:30px;}
  .hero-desc{font-size:15px;}
}

/* ===== Page Intro ===== */
.page-intro{
  background:var(--panel);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.intro-grid{display:flex;gap:48px;align-items:flex-start;padding:52px 0;}
.intro-main{flex:1 1 70%;}
.intro-main p{color:var(--text2);font-size:16px;margin-bottom:16px;}
.intro-main p:last-child{margin-bottom:0;}
.intro-aside{flex:0 0 300px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;position:relative;overflow:hidden;}
.intro-aside::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--magenta),var(--teal));}
.intro-aside h4{font-size:16px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.intro-aside h4 i{color:var(--amber);}
.intro-aside ul li{display:flex;align-items:flex-start;gap:10px;color:var(--text2);font-size:14px;margin-bottom:10px;line-height:1.5;}
.intro-aside ul li i{color:var(--teal);font-size:13px;margin-top:4px;}
@media(max-width:1023px){.intro-grid{flex-direction:column;gap:32px;}.intro-aside{flex:1 1 auto;}}
@media(max-width:767px){.intro-grid{padding:36px 0;}}

/* ===== Feature Cards ===== */
.features{padding:80px 0;}
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.feature-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;position:relative;overflow:hidden;}
.feature-card::before{content:"";position:absolute;bottom:0;left:0;width:100%;height:2px;background:var(--magenta);opacity:0;transition:opacity .3s;border-radius:2px;}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(225,29,116,0.4);}
.feature-card:hover::before{opacity:1;}
.feature-icon{width:50px;height:50px;border-radius:12px;background:rgba(225,29,116,0.12);display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--magenta);margin-bottom:18px;border:1px solid rgba(225,29,116,0.2);}
.feature-card:nth-child(2) .feature-icon{color:var(--teal);background:rgba(0,212,170,0.1);border-color:rgba(0,212,170,0.2);}
.feature-card:nth-child(3) .feature-icon{color:var(--amber);background:rgba(255,176,32,0.1);border-color:rgba(255,176,32,0.2);}
.feature-card:nth-child(4) .feature-icon{color:#8fa4ff;background:rgba(143,164,255,0.1);border-color:rgba(143,164,255,0.2);}
.feature-card h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.feature-card p{font-size:14px;color:var(--text2);line-height:1.7;}
@media(max-width:1023px){.feature-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:767px){.feature-grid{grid-template-columns:1fr;}}

/* ===== Scenarios Split ===== */
.scenarios{padding:80px 0;background:var(--panel);border-top:1px solid var(--border);border-bottom:1px solid var(--border);position:relative;overflow:hidden;}
.scenarios::before{content:"";position:absolute;top:-80px;right:10%;width:300px;height:300px;background:radial-gradient(circle,rgba(0,212,170,0.12),transparent 65%);pointer-events:none;}
.scenario-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.scenario-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px 22px;transition:transform .3s ease,border-color .3s ease;position:relative;}
.scenario-card:hover{transform:translateY(-4px);border-color:rgba(0,212,170,0.4);}
.scenario-num{font-size:28px;font-weight:900;color:rgba(225,29,116,0.22);position:absolute;top:14px;right:18px;font-family:"Times New Roman",serif;}
.scenario-card h4{font-size:16px;font-weight:700;margin-bottom:10px;padding-right:30px;}
.scenario-card p{font-size:13.5px;color:var(--text2);line-height:1.7;}
.scenario-icon{width:44px;height:44px;border-radius:10px;background:rgba(225,29,116,0.1);display:flex;align-items:center;justify-content:center;color:var(--magenta);font-size:17px;margin-bottom:14px;}
.scenario-card:nth-child(2) .scenario-icon{color:var(--teal);background:rgba(0,212,170,0.1);}
.scenario-card:nth-child(3) .scenario-icon{color:var(--amber);background:rgba(255,176,32,0.1);}
.scenario-card:nth-child(4) .scenario-icon{color:#8fa4ff;background:rgba(143,164,255,0.1);}
@media(max-width:1023px){.scenario-grid{grid-template-columns:repeat(2,1fr);gap:16px;}}
@media(max-width:767px){.scenario-grid{grid-template-columns:1fr;}}

/* ===== Timeline ===== */
.timeline-section{padding:80px 0;position:relative;}
.timeline-wrap{position:relative;max-width:860px;margin:0 auto;padding-left:24px;}
.timeline-wrap::before{content:"";position:absolute;top:0;bottom:0;left:8px;width:2px;background:linear-gradient(to bottom,rgba(225,29,116,0.6),rgba(0,212,170,0.4));border-radius:2px;}
.timeline-item{position:relative;padding:0 0 40px 40px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-dot{position:absolute;left:-2px;top:8px;width:20px;height:20px;border-radius:50%;background:var(--bg);border:3px solid var(--magenta);box-shadow:0 0 14px var(--glow);}
.timeline-dot::after{content:"";position:absolute;inset:4px;border-radius:50%;background:var(--magenta);}
.timeline-dot.done{border-color:var(--teal);box-shadow:0 0 14px rgba(0,212,170,0.4);}
.timeline-dot.done::after{background:var(--teal);}
.timeline-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px 26px;transition:transform .3s ease,box-shadow .3s ease;position:relative;}
.timeline-card:hover{transform:translateX(4px);box-shadow:var(--shadow-hover);}
.timeline-time{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--amber);background:rgba(255,176,32,0.1);padding:4px 12px;border-radius:999px;margin-bottom:10px;letter-spacing:0.03em;}
.timeline-card h4{font-size:17px;font-weight:700;margin-bottom:6px;}
.timeline-card p{font-size:14px;color:var(--text2);line-height:1.65;}
.timeline-place{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-size:12.5px;color:var(--text3);}
.timeline-place i{color:var(--teal);}
@media(min-width:1025px){
  .timeline-wrap{padding-left:0;}
  .timeline-wrap::before{left:50%;margin-left:-1px;}
  .timeline-item{width:50%;padding:0 48px 48px 0;left:0;}
  .timeline-item:nth-child(even){left:50%;padding:0 0 48px 48px;}
  .timeline-item:nth-child(even) .timeline-dot{left:auto;right:-11px;}
  .timeline-item .timeline-dot{left:auto;right:auto;left:-11px;}
  .timeline-item:nth-child(even) .timeline-card{left:0;}
}
.timeline-note{display:flex;gap:10px;align-items:flex-start;background:rgba(0,212,170,0.06);border:1px solid rgba(0,212,170,0.18);border-radius:var(--radius);padding:18px 22px;margin-top:36px;color:var(--text2);font-size:14px;}
.timeline-note i{color:var(--teal);font-size:16px;margin-top:2px;}

/* ===== Activity Cards ===== */
.activity-list{padding:80px 0;background:var(--panel);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.activity-card{display:flex;gap:24px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:24px;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;align-items:stretch;}
.activity-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(225,29,116,0.35);}
.activity-thumb{flex:0 0 200px;border-radius:10px;overflow:hidden;background:var(--bg);min-height:150px;position:relative;}
.activity-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.activity-card:hover .activity-thumb img{transform:scale(1.04);}
.activity-thumb .thumb-tag{position:absolute;top:10px;left:10px;z-index:2;font-size:11.5px;font-weight:600;background:rgba(11,14,20,0.85);color:var(--teal);padding:4px 10px;border-radius:999px;border:1px solid rgba(0,212,170,0.3);}
.activity-body{flex:1 1 auto;display:flex;flex-direction:column;padding:6px 0;}
.activity-body h4{font-size:18px;font-weight:700;margin-bottom:8px;line-height:1.4;}
.activity-body h4 a{transition:color .25s;}
.activity-body h4 a:hover{color:var(--magenta);}
.activity-desc{font-size:14px;color:var(--text2);margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.activity-meta{display:flex;align-items:center;flex-wrap:wrap;gap:16px;margin-top:auto;font-size:13px;color:var(--text3);}
.activity-meta .meta-date i{color:var(--magenta);margin-right:5px;}
.activity-meta .meta-cat{font-size:12px;font-weight:600;background:rgba(225,29,116,0.12);color:var(--magenta);padding:3px 10px;border-radius:999px;}
.activity-link{font-size:13px;font-weight:600;color:var(--teal);transition:color .2s;}
.activity-link:hover{color:#fff;}
.activity-arrow{font-size:15px;}
@media(max-width:767px){
  .activity-card{flex-direction:column;padding:16px;}
  .activity-thumb{flex:0 0 auto;height:180px;width:100%;}
}

/* ===== CTA panel ===== */
.cta-panel{padding:80px 0;position:relative;overflow:hidden;}
.cta-container{background:var(--card);border:1px solid rgba(255,255,255,0.1);border-radius:20px;padding:56px 48px;text-align:center;position:relative;overflow:hidden;}
.cta-container::before{content:"";position:absolute;top:-100px;left:20%;width:400px;height:400px;background:radial-gradient(circle,rgba(225,29,116,0.16),transparent 65%);pointer-events:none;}
.cta-container::after{content:"";position:absolute;bottom:-100px;right:15%;width:320px;height:320px;background:radial-gradient(circle,rgba(0,212,170,0.12),transparent 65%);pointer-events:none;}
.cta-container .cta-inner{position:relative;z-index:2;}
.cta-container h2{font-size:32px;font-weight:800;letter-spacing:-0.02em;margin-bottom:14px;line-height:1.3;}
.cta-container p{color:var(--text2);font-size:16px;max-width:560px;margin:0 auto 32px;}
.cta-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}
.cta-note{margin-top:24px;font-size:13px;color:var(--text3);display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;}
.cta-note i{color:var(--teal);}
@media(max-width:767px){.cta-container{padding:40px 22px;}.cta-container h2{font-size:24px;}}

/* ===== FAQ ===== */
.faq-section{padding:80px 0;background:var(--panel);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;overflow:hidden;transition:border-color .3s ease;}
.faq-item.open{border-color:rgba(225,29,116,0.4);}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;background:none;border:none;color:var(--text);font-size:15px;font-weight:700;padding:20px 24px;transition:color .25s;}
.faq-question:hover{color:var(--magenta);}
.faq-icon{flex-shrink:0;width:24px;height:24px;border-radius:50%;background:rgba(225,29,116,0.15);color:var(--magenta);display:flex;align-items:center;justify-content:center;font-size:14px;transition:transform .3s ease,background .3s ease;}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--magenta);color:#fff;}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-answer-inner{padding:0 24px 22px;color:var(--text2);font-size:14px;line-height:1.8;}
.faq-answer-inner a{color:var(--teal);}
.faq-answer-inner a:hover{text-decoration:underline;}

/* ===== Back link ===== */
.back-section{padding:40px 0;text-align:center;}
.back-home{display:inline-flex;align-items:center;gap:10px;color:var(--text2);font-size:15px;font-weight:600;transition:color .25s,transform .25s;}
.back-home:hover{color:var(--magenta);transform:translateX(-4px);}

/* ===== Footer ===== */
.site-footer{background:#0B0E14;border-top:1px solid rgba(255,255,255,0.07);padding:48px 0 0;position:relative;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;margin-bottom:12px;}
.footer-brand i{color:var(--magenta);font-size:20px;}
.footer-desc{color:var(--text2);font-size:14px;line-height:1.7;max-width:340px;}
.site-footer h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;position:relative;padding-bottom:8px;}
.site-footer h4::after{content:"";position:absolute;bottom:0;left:0;width:28px;height:2px;background:var(--magenta);border-radius:2px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--text2);transition:color .2s,padding-left .2s;}
.footer-links a:hover{color:var(--magenta);padding-left:4px;}
.footer-contact{list-style:none;}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text2);margin-bottom:12px;}
.footer-contact li i{color:var(--teal);width:16px;text-align:center;}
.footer-copy{border-top:1px solid rgba(255,255,255,0.06);padding:18px 0;text-align:center;font-size:12px;color:var(--text3);}
@media(max-width:767px){.footer-grid{grid-template-columns:1fr;gap:28px;}}

/* roulang page: article */
:root {
  --magenta: #E11D74;
  --teal: #00D4AA;
  --amber: #FFB020;
  --bg-dark: #0B0E14;
  --bg-section: #131A24;
  --bg-card: #1A222E;
  --border: rgba(255, 255, 255, 0.08);
  --text-main: #F2F5FA;
  --text-secondary: #9AA8B9;
  --text-muted: #6B7688;
  --radius: 12px;
  --radius-btn: 8px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.5);
  --transition: all .3s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "tnum";
}
img { max-width: 100%; display: block; }
a { color: var(--teal); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--magenta); }
ul, ol { list-style: none; }
input, button, textarea { font-family: inherit; }
.grid-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  padding: 14px 28px;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn:focus-visible { outline: 2px solid var(--magenta); outline-offset: 3px; }
.btn:active { transform: scale(0.97); }
.btn-amber {
  background: var(--amber);
  color: #1A1400;
  box-shadow: 0 4px 16px rgba(255, 176, 32, 0.25);
}
.btn-amber:hover {
  background: #ffc14a;
  color: #1A1400;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 176, 32, 0.35);
}
.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.25);
  color: var(--text-main);
}
.btn-outline:hover {
  background: rgba(225, 29, 116, 0.15);
  border-color: var(--magenta);
  color: var(--text-main);
  transform: translateY(-2px);
}

/* 导航 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 72px;
  background: rgba(11, 14, 20, 0.55);
  backdrop-filter: blur(12px) saturate(150%);
  -webkit-backdrop-filter: blur(12px) saturate(150%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: var(--transition);
}
.site-header.scrolled {
  background: rgba(11, 14, 20, 0.94);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  position: relative;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}
.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--magenta), #7A0C3E);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 0 18px rgba(225, 29, 116, 0.35);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong {
  font-size: 17px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 0.02em;
}
.brand-text small {
  font-size: 12px;
  color: var(--teal);
  font-weight: 600;
  letter-spacing: 0.06em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  margin: 0;
  padding: 0;
}
.nav-links li { list-style: none; }
.nav-links a {
  position: relative;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 2px;
  transition: var(--transition);
}
.nav-links a:hover { color: var(--magenta); }
.nav-links a.active {
  color: var(--text-main);
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--magenta);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(225, 29, 116, 0.6);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.header-cta { padding: 10px 22px; font-size: 14px; }
.menu-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-main);
  border-radius: 8px;
  width: 42px;
  height: 42px;
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.menu-toggle:hover { border-color: var(--magenta); color: var(--magenta); }
.nav-mobile-cta { display: none; }

/* 文章 Banner */
.article-banner {
  position: relative;
  padding: 160px 0 64px;
  background: linear-gradient(180deg, rgba(11, 14, 20, 0.78) 0%, rgba(11, 14, 20, 0.9) 60%, var(--bg-dark) 100%), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  border-bottom: 1px solid var(--border);
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 28px;
  letter-spacing: 0.03em;
}
.breadcrumb a { color: var(--text-secondary); text-decoration: none; }
.breadcrumb a:hover { color: var(--magenta); }
.breadcrumb-sep { color: var(--text-muted); opacity: 0.5; }
.breadcrumb-current { color: var(--teal); font-weight: 600; }
.article-h1 {
  font-size: 42px;
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: 20px;
  max-width: 900px;
}
.article-excerpt {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 800px;
  margin-bottom: 28px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  padding: 18px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.article-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 14px;
}
.article-meta-item i { color: var(--magenta); font-size: 14px; }

/* 正文区 */
.article-body-section {
  padding: 80px 0;
  background: var(--bg-dark);
}
.article-content-inner {
  max-width: 820px;
  margin: 0 auto;
}
.article-content {
  position: relative;
}
.article-content::before {
  content: '';
  position: absolute;
  top: 0;
  left: -24px;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--magenta), transparent 80%);
  border-radius: 0 3px 3px 0;
  opacity: 0.5;
}
.article-content h2 {
  font-size: 26px;
  font-weight: 800;
  margin: 2em 0 0.8em;
  padding-left: 14px;
  border-left: 4px solid var(--magenta);
  line-height: 1.4;
  color: var(--text-main);
}
.article-content h3 {
  font-size: 21px;
  font-weight: 700;
  margin: 1.8em 0 0.6em;
  color: var(--teal);
}
.article-content p {
  margin: 0 0 1.8em;
  color: var(--text-secondary);
  line-height: 1.85;
  font-size: 16px;
}
.article-content a {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.article-content a:hover { color: var(--magenta); }
.article-content blockquote {
  border-left: 4px solid var(--magenta);
  background: rgba(225, 29, 116, 0.07);
  padding: 20px 26px;
  margin: 1.8em 0;
  border-radius: 0 10px 10px 0;
  color: var(--text-secondary);
  font-style: italic;
}
.article-content img {
  border-radius: var(--radius);
  margin: 1.8em 0;
  box-shadow: var(--shadow);
}
.article-content ul,
.article-content ol {
  margin: 1.4em 0;
  padding-left: 1.6em;
  color: var(--text-secondary);
}
.article-content ul li { list-style: disc; margin: 0.5em 0; }
.article-content ul li::marker { color: var(--magenta); }
.article-content ol li { list-style: decimal; margin: 0.5em 0; }
.article-content ol li::marker { color: var(--teal); font-weight: 700; }
.article-content pre {
  background: #05070C;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  overflow-x: auto;
  margin: 1.8em 0;
  line-height: 1.6;
}
.article-content code {
  background: rgba(0, 212, 170, 0.12);
  color: var(--teal);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
.article-content pre code {
  background: transparent;
  color: #E2E8F0;
  padding: 0;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.8em 0;
}
.article-content th,
.article-content td {
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 12px 16px;
  text-align: left;
  color: var(--text-secondary);
}
.article-content th {
  background: var(--bg-card);
  color: var(--text-main);
  font-weight: 700;
}

/* 标签 分享 */
.article-bottom {
  max-width: 820px;
  margin: 48px auto 0;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-main);
  background: rgba(225, 29, 116, 0.15);
  border: 1px solid rgba(225, 29, 116, 0.35);
  padding: 5px 14px;
  border-radius: 999px;
  transition: var(--transition);
}
.tag:hover {
  background: rgba(225, 29, 116, 0.25);
  border-color: var(--magenta);
}
.article-share {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-muted);
}
.share-link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 14px;
  transition: var(--transition);
}
.share-link:hover {
  border-color: var(--magenta);
  color: var(--magenta);
  transform: translateY(-2px);
}
.article-back {
  max-width: 820px;
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* 未找到 */
.not-found {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  padding: 60px 32px;
  background: var(--bg-section);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.not-found i {
  font-size: 44px;
  color: var(--magenta);
  margin-bottom: 16px;
  opacity: 0.6;
}
.not-found h2 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 12px;
}
.not-found p {
  color: var(--text-secondary);
  margin-bottom: 28px;
}

/* 相关推荐 */
.related-section {
  padding: 80px 0;
  background: var(--bg-section);
  border-top: 1px solid var(--border);
}
.section-title {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-title::before {
  content: '';
  width: 4px;
  height: 26px;
  background: var(--magenta);
  border-radius: 4px;
  box-shadow: 0 0 10px rgba(225, 29, 116, 0.5);
}
.section-subtitle {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 40px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
}
.related-card:hover {
  transform: translateY(-4px);
  border-color: var(--magenta);
  box-shadow: var(--shadow-hover);
}
.related-thumb {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-section);
}
.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.related-card:hover .related-thumb img { transform: scale(1.05); }
.related-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.related-body h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
}
.related-body h3 a { color: var(--text-main); }
.related-body h3 a:hover { color: var(--magenta); }
.related-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-muted);
}
.related-tag {
  background: rgba(225, 29, 116, 0.15);
  color: var(--magenta);
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* CTA */
.cta-section {
  padding: 80px 0;
  text-align: center;
  background: linear-gradient(135deg, rgba(225, 29, 116, 0.1) 0%, transparent 50%, rgba(0, 212, 170, 0.06) 100%), var(--bg-dark);
  border-top: 1px solid var(--border);
  position: relative;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 200px;
  background: radial-gradient(ellipse, rgba(225, 29, 116, 0.12), transparent 70%);
  pointer-events: none;
}
.cta-section h2 {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}
.cta-section p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 36px;
}
.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  position: relative;
  z-index: 1;
}

/* 页脚 */
.site-footer {
  background: #070A0F;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand {
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  color: var(--text-main);
}
.footer-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 320px;
}
.site-footer h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 18px;
  letter-spacing: 0.03em;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  color: var(--text-secondary);
  font-size: 14px;
  text-decoration: none;
  transition: var(--transition);
}
.footer-links a:hover {
  color: var(--magenta);
  padding-left: 4px;
}
.footer-contact {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 12px;
}
.footer-contact li i {
  color: var(--teal);
  width: 16px;
  text-align: center;
}
.footer-copy {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
  padding: 20px 0;
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

/* 响应式 */
@media (max-width: 1023px) {
  .article-h1 { font-size: 34px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767px) {
  .grid-container { padding: 0 18px; }
  .site-header { height: 64px; }
  .header-inner { height: 64px; }
  .menu-toggle { display: inline-flex; }
  .header-cta { display: none; }
  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(11, 14, 20, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    padding: 20px 24px 28px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-links a { font-size: 16px; }
  .nav-mobile-cta { display: block; width: 100%; padding-top: 8px; }
  .nav-mobile-cta .btn { width: 100%; }
  .article-banner { padding: 130px 0 48px; }
  .article-h1 { font-size: 28px; line-height: 1.35; }
  .article-excerpt { font-size: 15px; }
  .article-meta { gap: 14px; }
  .article-content-inner { max-width: 100%; }
  .article-content::before { display: none; }
  .article-content h2 { font-size: 22px; }
  .article-content h3 { font-size: 18px; }
  .article-content p { font-size: 15px; }
  .article-content blockquote { padding: 16px 20px; }
  .article-bottom { flex-direction: column; align-items: flex-start; }
  .article-back { flex-direction: column; width: 100%; }
  .article-back .btn { width: 100%; }
  .related-grid { grid-template-columns: 1fr; }
  .cta-section h2 { font-size: 24px; }
  .cta-buttons { flex-direction: column; }
  .cta-buttons .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-copy { font-size: 12px; }
}
@media (max-width: 480px) {
  .brand-text strong { font-size: 15px; }
  .brand-text small { font-size: 11px; }
  .brand-mark { width: 34px; height: 34px; font-size: 15px; border-radius: 8px; }
  .article-h1 { font-size: 24px; }
  .article-meta-item { font-size: 13px; }
  .related-body { padding: 18px; }
}