/* roulang page: index */
:root {
  --bg: #0B0D11;
  --surface: #161B22;
  --surface-2: #212832;
  --line: #2B3540;
  --gold: #D4A95C;
  --gold-bright: #E8C27A;
  --jade: #3ECF8E;
  --alarm: #E5635C;
  --ink-1: #F2F4F8;
  --ink-2: #A4B0BF;
  --ink-3: #6F7B8C;
  --radius-card: 14px;
  --radius-btn: 8px;
  --radius-img: 10px;
  --radius-chip: 6px;
  --shadow-card: 0 1px 0 rgba(255,255,255,0.03), 0 8px 24px rgba(0,0,0,0.35);
  --shadow-card-hover: 0 12px 32px rgba(0,0,0,0.55);
  --ease: cubic-bezier(.25, .1, .25, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--ink-1);
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

button,
input {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
}

ul,
ol {
  list-style: none;
}

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

.section {
  padding: 104px 0;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 68px;
  background: rgba(11, 13, 16, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 100%;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--ink-1);
  white-space: nowrap;
  letter-spacing: -0.2px;
}

.brand-logo svg {
  width: 28px;
  height: 28px;
  stroke: var(--gold);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.brand-logo strong {
  color: var(--gold);
  font-weight: 800;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 36px;
  margin-left: 8px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-2);
  padding: 6px 0;
  position: relative;
  transition: color 0.2s var(--ease);
  outline: none;
}

.nav-link:hover {
  color: var(--ink-1);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s var(--ease);
}

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

.nav-link.active {
  color: var(--gold);
}

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

.nav-link:focus-visible {
  outline: 3px solid rgba(212, 169, 92, 0.35);
  outline-offset: 4px;
  border-radius: 4px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.search-form {
  display: flex;
  align-items: center;
  position: relative;
}

.search-form input {
  width: 180px;
  height: 38px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-btn);
  padding: 0 36px 0 14px;
  font-size: 13px;
  color: var(--ink-1);
  outline: none;
  transition: width 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.search-form input::placeholder {
  color: var(--ink-3);
}

.search-form input:focus {
  border-color: var(--gold);
  width: 220px;
  background: var(--surface-2);
}

.search-form input:focus-visible {
  outline: 3px solid rgba(212, 169, 92, 0.2);
  outline-offset: 2px;
}

.search-form button {
  position: absolute;
  right: 8px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-3);
  cursor: pointer;
  transition: color 0.2s var(--ease);
}

.search-form button:hover {
  color: var(--gold);
}

.search-form button svg {
  width: 15px;
  height: 15px;
  stroke: currentColor;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  border-radius: var(--radius-btn);
  background: var(--surface);
  border: 1px solid var(--line);
  transition: border-color 0.2s var(--ease);
}

.menu-toggle:hover {
  border-color: var(--gold);
}

.menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--ink-1);
  border-radius: 2px;
  transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 16px 20px 20px;
}

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

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mobile-nav .nav-link {
  padding: 13px 0;
  border-bottom: 1px solid rgba(43, 53, 64, 0.6);
  font-size: 15px;
  color: var(--ink-1);
}

.mobile-nav .nav-link.active {
  color: var(--gold);
}

.mobile-nav .nav-link.active::after {
  display: none;
}

.mobile-menu .search-form {
  margin-top: 16px;
}

.mobile-menu .search-form input {
  width: 100%;
}

.mobile-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.mobile-actions .btn {
  flex: 1;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 28px;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-btn);
  cursor: pointer;
  transition: all 0.25s var(--ease);
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--gold);
  color: #101112;
}

.btn-primary:hover {
  background: var(--gold-bright);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(1px);
  background: var(--gold);
}

.btn-primary:focus-visible {
  outline: 3px solid rgba(212, 169, 92, 0.35);
  outline-offset: 2px;
}

.btn-ghost {
  border-color: var(--line);
  color: var(--ink-1);
  background: transparent;
}

.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
  background: var(--surface);
}

.btn-ghost:active {
  background: var(--surface-2);
}

.btn-ghost:focus-visible {
  outline: 3px solid rgba(212, 169, 92, 0.3);
  outline-offset: 2px;
}

.btn-sm {
  height: 38px;
  padding: 0 20px;
  font-size: 13px;
}

.btn-lg {
  height: 50px;
  padding: 0 34px;
  font-size: 15px;
}

.btn-xl {
  height: 54px;
  padding: 0 42px;
  font-size: 16px;
  border-radius: 10px;
}

.btn-block {
  width: 100%;
}

.btn-arrow {
  display: inline-block;
  transition: transform 0.2s var(--ease);
}

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

/* ===== Hero ===== */
.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  width: 100%;
  padding-top: 48px;
  padding-bottom: 48px;
}

.hero-content {
  max-width: 660px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 26px;
  animation: fade-up 0.2s var(--ease) both;
}

.hero-tag::before,
.hero-tag::after {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--gold);
  opacity: 0.6;
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.2;
  margin-bottom: 22px;
  animation: fade-up 0.3s var(--ease) both;
}

.hero-subtitle {
  font-size: 16px;
  color: var(--ink-2);
  line-height: 1.8;
  margin-bottom: 34px;
  max-width: 570px;
  animation: fade-up 0.4s var(--ease) both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 44px;
  animation: fade-up 0.5s var(--ease) both;
}

.hero-trust {
  display: flex;
  align-items: center;
  animation: fade-up 0.6s var(--ease) both;
}

.trust-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 28px;
  border-right: 1px solid var(--line);
}

.trust-item:first-child {
  padding-left: 0;
}

.trust-item:last-child {
  border-right: none;
  padding-right: 0;
}

.trust-num {
  font-size: 26px;
  font-weight: 800;
  color: var(--gold);
  line-height: 1.2;
}

.trust-label {
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.02em;
}

/* ===== Trust Strip ===== */
.trust-strip {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.trust-cell {
  padding: 32px 32px;
  border-right: 1px solid var(--line);
}

.trust-cell:first-child {
  padding-left: 0;
}

.trust-cell:last-child {
  border-right: none;
}

.trust-value {
  font-size: 26px;
  font-weight: 800;
  color: var(--gold);
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.trust-sub {
  font-size: 13px;
  color: var(--ink-3);
  margin-top: 6px;
}

/* ===== Section Head ===== */
.section-head {
  margin-bottom: 48px;
  max-width: 720px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-title {
  font-size: 30px;
  font-weight: 750;
  letter-spacing: -0.5px;
  line-height: 1.3;
  margin-bottom: 12px;
}

.section-desc {
  color: var(--ink-3);
  font-size: 14px;
  line-height: 1.7;
}

/* ===== Gameplay ===== */
.gameplay-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 28px;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.gameplay-card:hover {
  transform: translateY(-6px);
  border-color: rgba(212, 169, 92, 0.5);
  box-shadow: var(--shadow-card-hover);
}

.gameplay-main {
  background: var(--surface-2);
}

.section-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 26px;
  letter-spacing: -1px;
}

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

.gameplay-card p {
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.7;
}

/* ===== Rewards ===== */
.rewards-section {
  background: var(--surface);
}

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

.reward-card:hover {
  transform: translateY(-6px);
  border-color: rgba(212, 169, 92, 0.5);
  box-shadow: var(--shadow-card-hover);
}

.reward-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-img);
  margin-bottom: 16px;
  background: linear-gradient(135deg, #1c2430 25%, #161b22 50%, #1c2430 75%);
}

.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--gold);
  border: 1px solid rgba(212, 169, 92, 0.5);
  border-radius: 999px;
  padding: 3px 10px;
  margin-bottom: 12px;
}

.reward-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.reward-card p {
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.6;
  margin-bottom: 12px;
}

.reward-value {
  font-size: 13px;
  font-weight: 700;
  color: var(--gold);
}

/* ===== Task ===== */
.task-grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 48px;
  align-items: center;
}

.task-intro .section-title {
  margin-bottom: 16px;
}

.task-intro p {
  font-size: 15px;
  color: var(--ink-2);
  line-height: 1.8;
  margin-bottom: 24px;
  max-width: 440px;
}

.task-points {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.task-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--ink-1);
}

.task-points .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  flex-shrink: 0;
}

.task-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 32px;
  box-shadow: var(--shadow-card);
}

.task-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.phase-name {
  font-size: 18px;
  font-weight: 700;
}

.phase-counter {
  font-size: 14px;
  font-weight: 700;
  color: var(--gold);
}

.progress-track {
  height: 6px;
  background: var(--surface-2);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 24px;
}

.progress-fill {
  height: 100%;
  background: var(--gold);
  border-radius: 999px;
  transition: width 0.4s var(--ease);
}

.task-list {
  margin-bottom: 28px;
}

.task-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(43, 53, 64, 0.6);
  font-size: 14px;
}

.task-item:first-child {
  padding-top: 0;
}

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

.task-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
}

.task-item.done {
  color: var(--ink-2);
}

.task-item.done .task-icon {
  background: rgba(62, 207, 142, 0.15);
  color: var(--jade);
  border: 1px solid rgba(62, 207, 142, 0.4);
}

.task-item.active {
  color: var(--ink-1);
}

.task-item.active .task-icon {
  background: rgba(212, 169, 92, 0.15);
  color: var(--gold);
  border: 1px solid rgba(212, 169, 92, 0.5);
}

.task-item.todo {
  color: var(--ink-3);
}

.task-item.todo .task-icon {
  border: 1px solid var(--line);
  color: var(--ink-3);
}

.task-status {
  margin-left: auto;
  font-size: 12px;
  color: var(--ink-3);
}

.task-item.done .task-status {
  color: var(--jade);
}

.task-item.active .task-status {
  color: var(--gold);
}

/* ===== News ===== */
.news-section {
  background: var(--bg);
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.news-item {
  display: flex;
  align-items: center;
  gap: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 20px 24px;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), transform 0.25s var(--ease);
}

.news-item:hover {
  border-color: rgba(212, 169, 92, 0.5);
  background: var(--surface-2);
  transform: translateY(-2px);
}

.news-date {
  flex: 0 0 64px;
  font-size: 13px;
  color: var(--ink-3);
  letter-spacing: 0.02em;
}

.news-badge {
  flex: 0 0 auto;
  font-size: 11px;
  font-weight: 600;
  color: var(--gold);
  border: 1px solid rgba(212, 169, 92, 0.5);
  border-radius: var(--radius-chip);
  padding: 3px 8px;
  white-space: nowrap;
}

.news-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.news-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-1);
  transition: color 0.2s var(--ease);
  line-height: 1.5;
}

.news-item:hover .news-title {
  color: var(--gold);
}

.news-excerpt {
  font-size: 13px;
  color: var(--ink-3);
  line-height: 1.6;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.news-more {
  flex: 0 0 auto;
  font-size: 13px;
  font-weight: 600;
  color: var(--gold);
  white-space: nowrap;
}

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 64px 24px;
  background: var(--surface);
  border: 1px dashed var(--line);
  border-radius: var(--radius-card);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.empty-icon {
  width: 64px;
  height: 64px;
  color: var(--ink-3);
  stroke: currentColor;
  stroke-width: 1.5;
  opacity: 0.55;
}

.empty-text {
  color: var(--ink-3);
  font-size: 14px;
  letter-spacing: 0.03em;
}

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

.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item:first-child {
  border-top: 1px solid var(--line);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 22px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-1);
  cursor: pointer;
  text-align: left;
  width: 100%;
  background: none;
  border: none;
  transition: color 0.2s var(--ease);
  outline: none;
}

.faq-question:hover {
  color: var(--gold-bright);
}

.faq-question:focus-visible {
  outline: 3px solid rgba(212, 169, 92, 0.3);
  outline-offset: 2px;
  border-radius: 4px;
}

.faq-icon {
  font-size: 22px;
  color: var(--gold);
  transition: transform 0.3s var(--ease);
  line-height: 1;
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0;
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.75;
  transition: max-height 0.3s var(--ease), padding 0.3s var(--ease);
}

.faq-item.open .faq-answer {
  max-height: 320px;
  padding: 0 0 24px;
}

/* ===== CTA ===== */
.cta-section {
  text-align: center;
  background-size: cover;
  background-position: center;
  padding: 120px 0;
}

.cta-section h2 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.cta-section > .site-container > p {
  font-size: 15px;
  color: var(--ink-2);
  margin-bottom: 32px;
}

.cta-note {
  font-size: 11px;
  color: var(--ink-3);
  margin-top: 18px;
  letter-spacing: 0.04em;
}

/* ===== Footer ===== */
.site-footer {
  background: #08090C;
  border-top: 1px solid var(--gold);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding: 64px 0 48px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--ink-3);
  margin-top: 16px;
  max-width: 330px;
  line-height: 1.7;
}

.footer-nav h4,
.footer-contact h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--ink-1);
}

.footer-nav a {
  display: block;
  font-size: 14px;
  color: var(--ink-3);
  margin-bottom: 10px;
  transition: color 0.2s var(--ease);
}

.footer-nav a:hover {
  color: var(--gold);
}

.footer-contact p {
  font-size: 14px;
  color: var(--ink-3);
  margin-bottom: 8px;
}

.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 20px 0;
}

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

.footer-bottom p {
  font-size: 13px;
  color: var(--ink-3);
}

/* ===== Animations ===== */
@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .main-nav {
    gap: 24px;
  }

  .search-form input {
    width: 160px;
  }

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

  .task-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .main-nav,
  .header-actions .search-form,
  .header-actions .btn-ghost {
    display: none;
  }

  .header-actions {
    gap: 8px;
  }

  .header-actions .btn-primary {
    display: inline-flex;
    height: 38px;
    padding: 0 18px;
    font-size: 13px;
  }

  .header-inner {
    gap: 16px;
  }

  .hero {
    min-height: auto;
    padding: 80px 0 60px;
  }

  .hero-title {
    font-size: 32px;
    letter-spacing: -0.5px;
  }

  .hero-subtitle {
    font-size: 15px;
  }

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

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

  .hero-trust {
    flex-wrap: wrap;
    gap: 16px 0;
  }

  .trust-item {
    padding: 0 20px;
  }

  .trust-item:first-child {
    padding-left: 0;
  }

  .section {
    padding: 72px 0;
  }

  .section-title {
    font-size: 24px;
  }

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

  .trust-cell {
    border-right: none;
    border-bottom: 1px solid var(--line);
    padding: 20px 0;
  }

  .trust-cell:last-child {
    border-bottom: none;
  }

  .task-panel {
    padding: 24px;
  }

  .news-item {
    flex-wrap: wrap;
  }

  .news-date {
    flex-basis: auto;
  }

  .news-body {
    order: 3;
    flex-basis: 100%;
  }

  .news-more {
    margin-left: auto;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 0 32px;
  }

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

  .cta-section {
    padding: 80px 0;
  }

  .cta-section h2 {
    font-size: 24px;
  }
}

@media (max-width: 767px) {
  .reward-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 16px;
    padding-bottom: 8px;
    margin: 0 -16px;
    padding-left: 16px;
    padding-right: 16px;
  }

  .reward-card {
    flex: 0 0 260px;
    scroll-snap-align: start;
  }
}

@media (max-width: 520px) {
  .site-container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .header-inner {
    gap: 10px;
  }

  .brand-logo {
    font-size: 16px;
  }

  .brand-logo svg {
    width: 24px;
    height: 24px;
  }

  .header-actions .btn-primary {
    padding: 0 14px;
  }

  .hero-tag {
    font-size: 10px;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-subtitle {
    font-size: 14px;
  }

  .gameplay-card,
  .task-panel {
    padding: 20px;
  }

  .section-num {
    font-size: 28px;
  }

  .faq-question {
    font-size: 15px;
  }
}

/* roulang page: article */
:root {
  --bg: #0B0D11;
  --surface: #161B22;
  --surface-2: #212832;
  --line: #2B3540;
  --gold: #D4A95C;
  --gold-bright: #E8C27A;
  --jade: #3ECF8E;
  --alarm: #E5635C;
  --ink-1: #F2F4F8;
  --ink-2: #A4B0BF;
  --ink-3: #6F7B8C;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink-1);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input { font-family: inherit; }
.site-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Header / Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 68px;
  background: rgba(11, 13, 16, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled { box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  transition: opacity 0.2s ease;
}
.brand-logo:hover { opacity: 0.88; }
.brand-logo svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: var(--gold);
  stroke-width: 1.6;
  stroke-linejoin: round;
  stroke-linecap: round;
}
.brand-logo span {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--ink-1);
  white-space: nowrap;
}
.brand-logo span strong {
  color: var(--gold);
  font-weight: 800;
  font-size: 19px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-link {
  position: relative;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-2);
  padding: 6px 0;
  transition: color 0.25s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s cubic-bezier(0.25, 0.1, 0.25, 1);
}
.nav-link:hover { color: var(--ink-1); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active {
  color: var(--gold);
  font-weight: 600;
}
.nav-link.active::after { transform: scaleX(1); }
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 12px;
  height: 38px;
  width: 180px;
  transition: width 0.2s ease, border-color 0.2s ease;
}
.header-search:focus-within {
  width: 220px;
  border-color: var(--gold);
}
.header-search svg {
  width: 15px;
  height: 15px;
  stroke: var(--ink-3);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  flex-shrink: 0;
}
.header-search input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--ink-1);
  font-size: 13px;
}
.header-search input::placeholder { color: var(--ink-3); }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gold);
  color: #101112;
  font-weight: 700;
  font-size: 14px;
  height: 44px;
  padding: 0 28px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.25s ease, transform 0.2s ease;
}
.btn-primary:hover { background: var(--gold-bright); transform: translateX(2px); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:focus-visible {
  outline: 3px solid rgba(212, 169, 92, 0.35);
  outline-offset: 2px;
}
.btn-primary .arrow { transition: transform 0.2s ease; }
.btn-primary:hover .arrow { transform: translateX(3px); }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink-1);
  font-size: 14px;
  font-weight: 500;
  height: 38px;
  padding: 0 20px;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.25s ease, color 0.25s ease, background 0.25s ease;
}
.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}
.btn-ghost:active { background: var(--surface); }
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
  padding: 0 9px;
  transition: border-color 0.2s ease;
}
.menu-toggle:hover { border-color: var(--gold); }
.menu-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--ink-1);
  border-radius: 2px;
  transition: background 0.2s ease;
}
.menu-toggle:hover span { background: var(--gold); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  z-index: 99;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.6);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}
.mobile-menu.open { max-height: 420px; }
.mobile-menu-inner {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 16px 24px 24px;
}
.mobile-nav-link {
  display: block;
  padding: 14px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
  border-bottom: 1px solid rgba(43, 53, 64, 0.5);
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.mobile-nav-link:hover { color: var(--gold); padding-left: 6px; }
.mobile-nav-link.active { color: var(--gold); font-weight: 600; }
.mobile-search {
  margin-top: 16px;
}
.mobile-search input {
  width: 100%;
  height: 42px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 14px;
  color: var(--ink-1);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease;
}
.mobile-search input:focus { border-color: var(--gold); }
.mobile-search input::placeholder { color: var(--ink-3); }
.mobile-menu .btn-ghost {
  margin-top: 16px;
  width: 60px;
}

/* Breadcrumb */
.breadcrumb-section {
  padding: 28px 0 16px;
  border-bottom: 1px solid rgba(43, 53, 64, 0.5);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--ink-3);
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--ink-3);
  transition: color 0.2s ease;
}
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb .separator { color: var(--ink-3); opacity: 0.6; }
.breadcrumb .current {
  color: var(--ink-2);
  max-width: 420px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Article */
.article-page {
  padding: 48px 0 80px;
}
.article-container {
  max-width: 720px;
  margin: 0 auto;
}
.article-head {
  margin-bottom: 40px;
}
.article-badge {
  display: inline-block;
  background: transparent;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
  text-transform: uppercase;
}
.article-head h1 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.3;
  color: var(--ink-1);
  margin-bottom: 18px;
}
@media (min-width: 768px) {
  .article-head h1 { font-size: 38px; }
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--ink-3);
  margin-bottom: 22px;
  flex-wrap: wrap;
}
.article-meta .sep {
  color: rgba(111, 123, 140, 0.5);
}
.article-summary {
  display: flex;
  gap: 16px;
  background: var(--surface);
  border-left: 2px solid var(--gold);
  border-radius: 0 10px 10px 0;
  padding: 18px 22px;
  margin-top: 8px;
}
.article-summary p {
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.75;
}

/* Article body */
.article-body {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-2);
}
.article-body h2 {
  font-size: 23px;
  font-weight: 700;
  color: var(--ink-1);
  margin: 42px 0 20px;
  padding-left: 18px;
  border-left: 4px solid var(--gold);
  line-height: 1.4;
  letter-spacing: -0.2px;
}
.article-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink-1);
  margin: 30px 0 14px;
  line-height: 1.5;
}
.article-body p {
  margin-bottom: 1.4em;
  color: var(--ink-2);
}
.article-body blockquote {
  border-left: 3px solid var(--gold);
  background: var(--surface);
  padding: 18px 22px;
  border-radius: 0 10px 10px 0;
  margin: 26px 0;
  color: var(--ink-2);
  font-size: 14px;
}
.article-body img {
  border-radius: 10px;
  margin: 28px 0 8px;
}
.article-body .img-caption,
.article-body figcaption {
  font-size: 12px;
  color: var(--ink-3);
  text-align: center;
  margin-bottom: 28px;
  line-height: 1.5;
}
.article-body a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(212, 169, 92, 0.45);
  transition: text-decoration-color 0.2s ease, color 0.2s ease;
}
.article-body a:hover {
  color: var(--gold-bright);
  text-decoration-color: var(--gold);
}
.article-body ul, .article-body ol {
  margin: 0 0 1.4em 1.5em;
  color: var(--ink-2);
}
.article-body li {
  margin-bottom: 8px;
}
.article-body li::marker {
  color: var(--gold);
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14px;
}
.article-body th {
  background: var(--surface-2);
  color: var(--ink-1);
  text-align: left;
  padding: 12px 16px;
  border: 1px solid var(--line);
  font-weight: 600;
}
.article-body td {
  padding: 12px 16px;
  border: 1px solid var(--line);
  color: var(--ink-2);
}
.article-body code {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 2px 8px;
  font-size: 13px;
  color: var(--gold-bright);
  font-family: "SF Mono", "Cascadia Code", Consolas, monospace;
}
.article-body pre {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
  margin: 24px 0;
  overflow-x: auto;
  line-height: 1.6;
}
.article-body pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--ink-1);
}

/* Empty state */
.article-empty {
  text-align: center;
  padding: 80px 24px;
  background: var(--surface);
  border: 1px dashed var(--line);
  border-radius: 14px;
}
.article-empty svg {
  width: 88px;
  height: 88px;
  stroke: var(--ink-3);
  fill: none;
  stroke-width: 1.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin: 0 auto 20px;
  opacity: 0.6;
}
.article-empty p {
  font-size: 16px;
  color: var(--ink-2);
  margin-bottom: 16px;
}
.article-empty a {
  display: inline-block;
  color: var(--gold);
  font-weight: 600;
  font-size: 14px;
  padding: 10px 28px;
  border: 1px solid var(--gold);
  border-radius: 8px;
  transition: background 0.25s ease, color 0.25s ease;
}
.article-empty a:hover {
  background: var(--gold);
  color: #101112;
}

/* Tags */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.tag {
  display: inline-block;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--ink-2);
  font-size: 12px;
  font-weight: 500;
  padding: 5px 16px;
  border-radius: 999px;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.tag:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* Pager */
.article-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 48px;
}
.pager-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px 24px;
  transition: all 0.25s cubic-bezier(0.25, 0.1, 0.25, 1);
}
.pager-card:hover {
  border-color: rgba(212, 169, 92, 0.5);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
}
.pager-card.next { text-align: right; }
.pager-label {
  display: block;
  font-size: 12px;
  color: var(--ink-3);
  margin-bottom: 6px;
}
.pager-title {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-1);
  line-height: 1.5;
  transition: color 0.2s ease;
}
.pager-card:hover .pager-title { color: var(--gold); }

/* Related */
.related-section {
  margin-top: 72px;
  padding-top: 48px;
  border-top: 1px solid var(--line);
}
.related-section h2 {
  font-size: 24px;
  font-weight: 750;
  letter-spacing: -0.3px;
  color: var(--ink-1);
  margin-bottom: 28px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  transition: all 0.25s cubic-bezier(0.25, 0.1, 0.25, 1);
}
.related-card:hover {
  transform: translateY(-6px);
  border-color: rgba(212, 169, 92, 0.5);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
}
.related-cover {
  aspect-ratio: 16 / 10;
  background-size: cover;
  background-position: center;
  background-color: var(--surface-2);
}
.related-info {
  padding: 18px 20px;
}
.related-info h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-1);
  line-height: 1.5;
  margin-bottom: 8px;
  transition: color 0.2s ease;
}
.related-card:hover .related-info h3 { color: var(--gold); }
.related-info span {
  font-size: 13px;
  color: var(--ink-3);
}

/* Footer */
.site-footer {
  background: #08090C;
  border-top: 1px solid var(--gold);
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding: 56px 0 40px;
}
.footer-brand .brand-logo {
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--ink-3);
  line-height: 1.7;
  max-width: 320px;
}
.footer-nav h4, .footer-contact h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-1);
  margin-bottom: 16px;
}
.footer-nav a {
  display: block;
  font-size: 13px;
  color: var(--ink-3);
  margin-bottom: 10px;
  transition: color 0.2s ease;
}
.footer-nav a:hover { color: var(--gold); }
.footer-contact p {
  font-size: 13px;
  color: var(--ink-3);
  line-height: 1.8;
  margin-bottom: 6px;
}
.footer-bottom {
  border-top: 1px solid rgba(43, 53, 64, 0.5);
  padding: 22px 0;
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom p {
  font-size: 12px;
  color: var(--ink-3);
}

/* Responsive */
@media (max-width: 1023px) {
  .main-nav { gap: 22px; }
  .header-search { width: 140px; }
  .header-search:focus-within { width: 180px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .site-container { padding: 0 16px; }
  .main-nav { display: none; }
  .btn-ghost { display: none; }
  .header-search { display: none; }
  .menu-toggle { display: flex; }
  .header-actions .btn-primary { height: 38px; padding: 0 16px; font-size: 13px; }
  .mobile-menu { display: block; }
  .breadcrumb-section { padding: 20px 0 14px; }
  .article-page { padding: 32px 0 56px; }
  .article-head h1 { font-size: 28px; }
  .article-pager { grid-template-columns: 1fr; gap: 16px; }
  .pager-card.next { text-align: left; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 44px 0 36px;
  }
  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .article-container { max-width: 100%; }
  .article-body { font-size: 15px; }
}
@media (max-width: 520px) {
  .brand-logo span { font-size: 16px; }
  .brand-logo svg { width: 24px; height: 24px; }
  .header-actions .btn-primary { padding: 0 12px; font-size: 12px; }
  .header-inner { gap: 12px; }
  .breadcrumb .current { max-width: 180px; }
}

/* roulang page: category1 */
:root {
            --bg: #0B0D11;
            --surface: #161B22;
            --surface-2: #212832;
            --line: #2B3540;
            --gold: #D4A95C;
            --gold-bright: #E8C27A;
            --jade: #3ECF8E;
            --alarm: #E5635C;
            --ink-1: #F2F4F8;
            --ink-2: #A4B0BF;
            --ink-3: #6F7B8C;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background: var(--bg);
            color: var(--ink-1);
            font-size: 15px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }
        img {
            display: block;
            max-width: 100%;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
        }
        input {
            font-family: inherit;
        }
        .site-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: 68px;
            background: rgba(11, 13, 16, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--line);
        }
        .header-inner {
            display: flex;
            align-items: center;
            gap: 24px;
            height: 68px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: -0.3px;
        }
        .brand-logo svg {
            width: 28px;
            height: 28px;
        }
        .brand-logo svg path {
            stroke: var(--gold);
            fill: none;
            stroke-width: 1.6;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .brand-logo strong {
            color: var(--gold);
            font-weight: 800;
        }
        .brand-logo span {
            color: var(--ink-1);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 36px;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            position: relative;
            display: inline-block;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-2);
            padding: 22px 0;
            transition: color .2s;
        }
        .nav-link:hover {
            color: var(--ink-1);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            background: var(--gold);
            transform: scaleX(0);
            transition: transform .25s cubic-bezier(.25, .1, .25, 1);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--gold);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-form {
            position: relative;
            display: flex;
            align-items: center;
        }
        .search-icon {
            position: absolute;
            left: 12px;
            width: 16px;
            height: 16px;
            color: var(--ink-3);
            pointer-events: none;
        }
        .search-form input {
            width: 180px;
            height: 38px;
            padding: 0 12px 0 36px;
            border-radius: 8px;
            border: 1px solid var(--line);
            background: var(--surface);
            color: var(--ink-1);
            font-size: 13px;
            outline: none;
            transition: width .2s, border-color .2s;
        }
        .search-form input::placeholder {
            color: var(--ink-3);
        }
        .search-form input:focus {
            width: 220px;
            border-color: var(--gold);
            box-shadow: 0 0 0 3px rgba(212, 169, 92, 0.12);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            border-radius: 8px;
            border: none;
            background: var(--gold);
            color: #101112;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: background .2s, transform .2s, box-shadow .2s;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--gold-bright);
            transform: translateX(2px);
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(212, 169, 92, 0.4);
            outline-offset: 2px;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            border-radius: 8px;
            border: 1px solid var(--line);
            background: transparent;
            color: var(--ink-1);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: border-color .2s, color .2s, background .2s;
            white-space: nowrap;
        }
        .btn-ghost:hover {
            border-color: var(--gold);
            color: var(--gold);
        }
        .btn-ghost:active {
            background: var(--surface);
        }
        .btn-header {
            height: 38px;
            padding: 0 18px;
            font-size: 13px;
        }
        .btn-block {
            width: 100%;
            margin-top: 8px;
        }
        .menu-toggle {
            display: none;
            width: 38px;
            height: 38px;
            border-radius: 8px;
            border: 1px solid var(--line);
            background: var(--surface);
            color: var(--ink-1);
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }
        .menu-toggle svg {
            width: 20px;
            height: 20px;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            background: var(--bg);
            border-bottom: 1px solid var(--line);
            z-index: 99;
            max-height: 0;
            overflow: hidden;
            padding: 0 24px;
            transition: max-height .3s cubic-bezier(.25, .1, .25, 1), padding .3s;
        }
        .mobile-menu.open {
            max-height: 480px;
            padding: 20px 24px 28px;
        }
        .mobile-nav-link {
            display: block;
            padding: 14px 0;
            font-size: 15px;
            color: var(--ink-2);
            border-bottom: 1px solid var(--line);
            transition: color .2s;
        }
        .mobile-nav-link.active {
            color: var(--gold);
        }
        .mobile-nav-link:last-of-type {
            border-bottom: none;
        }
        .mobile-search {
            margin-top: 16px;
        }
        .mobile-search input {
            width: 100%;
            padding-left: 36px;
        }
        .mobile-actions {
            margin-top: 16px;
        }

        /* ===== Category Hero ===== */
        .category-hero {
            padding: 96px 0 56px;
            background:
                linear-gradient(100deg, #0B0D11 30%, rgba(11, 13, 17, 0.75) 70%, rgba(11, 13, 17, 0.5)),
                url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--line);
        }
        .hero-line {
            width: 32px;
            height: 3px;
            background: var(--gold);
            margin-bottom: 18px;
            border-radius: 2px;
        }
        .category-hero h1 {
            font-size: 48px;
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.15;
            margin-bottom: 16px;
        }
        .category-hero p {
            max-width: 560px;
            font-size: 15px;
            color: var(--ink-2);
            line-height: 1.75;
        }

        /* ===== Category Body ===== */
        .category-body {
            padding: 72px 0 0;
        }
        .category-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
            align-items: start;
        }

        /* ===== Guide Cards ===== */
        .guide-cards {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .guide-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 14px;
            overflow: hidden;
            transition: transform .25s cubic-bezier(.25, .1, .25, 1), border-color .25s, box-shadow .25s;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            border-color: rgba(212, 169, 92, 0.5);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.55);
        }
        .guide-card-link {
            display: flex;
            gap: 20px;
            padding: 20px;
        }
        .guide-card-img {
            width: 220px;
            flex-shrink: 0;
            position: relative;
            border-radius: 10px;
            overflow: hidden;
            background: #1a1f27;
        }
        .guide-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 16 / 10;
            transition: transform .4s;
        }
        .guide-card:hover .guide-card-img img {
            transform: scale(1.03);
        }
        .guide-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            padding: 3px 10px;
            border-radius: 4px;
            border: 1px solid var(--gold);
            color: var(--gold);
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 0.04em;
            background: rgba(11, 13, 16, 0.78);
            backdrop-filter: blur(4px);
        }
        .guide-card-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }
        .guide-card-content h3 {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
            transition: color .2s;
        }
        .guide-card-content h3:hover {
            color: var(--gold);
        }
        .guide-card-content p {
            font-size: 13px;
            color: var(--ink-2);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .guide-meta {
            margin-top: auto;
            padding-top: 10px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid rgba(43, 53, 64, 0.5);
        }
        .guide-date {
            font-size: 13px;
            color: var(--ink-3);
        }
        .guide-read {
            font-size: 13px;
            font-weight: 500;
            color: var(--gold);
            transition: color .2s;
        }
        .guide-read:hover {
            color: var(--gold-bright);
        }

        /* ===== Info Panel ===== */
        .info-panel {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 14px;
            padding: 28px;
            position: sticky;
            top: 92px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
        }
        .info-panel h2 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            padding-left: 14px;
        }
        .info-panel h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 3px;
            background: var(--gold);
            border-radius: 2px;
        }
        .info-panel>p {
            font-size: 13px;
            color: var(--ink-2);
            line-height: 1.7;
            margin-bottom: 24px;
        }
        .info-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            margin-bottom: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 14px 8px;
            background: var(--bg);
            border-radius: 10px;
            border: 1px solid var(--line);
            transition: border-color .2s;
        }
        .stat-item:hover {
            border-color: rgba(212, 169, 92, 0.4);
        }
        .stat-number {
            font-size: 26px;
            font-weight: 800;
            color: var(--gold);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 12px;
            color: var(--ink-3);
            margin-top: 4px;
        }
        .scope-block {
            margin-bottom: 22px;
        }
        .scope-block h3 {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--ink-2);
        }
        .scope-list {
            list-style: none;
        }
        .scope-list li {
            position: relative;
            padding-left: 20px;
            font-size: 13px;
            color: var(--ink-2);
            line-height: 2;
            transition: color .2s;
        }
        .scope-list li:hover {
            color: var(--ink-1);
        }
        .scope-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 13px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--gold);
            opacity: 0.7;
        }
        .chart-bars {
            display: flex;
            flex-direction: column;
            gap: 12px;
            padding-top: 18px;
            border-top: 1px solid var(--line);
        }
        .chart-row {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--ink-3);
        }
        .chart-row span {
            width: 32px;
            flex-shrink: 0;
        }
        .bar-track {
            flex: 1;
            height: 6px;
            border-radius: 3px;
            background: var(--bg);
            overflow: hidden;
        }
        .bar-fill {
            height: 100%;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--gold), var(--gold-bright));
            transition: width .6s ease;
        }

        /* ===== Back Home ===== */
        .back-home {
            padding: 40px 0 0;
        }
        .back-home a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--ink-2);
            font-size: 14px;
            font-weight: 500;
            transition: color .2s;
        }
        .back-home a:hover {
            color: var(--gold);
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: 72px 0;
        }
        .section-title {
            font-size: 30px;
            font-weight: 750;
            text-align: center;
            letter-spacing: -0.5px;
            margin-bottom: 8px;
        }
        .section-sub {
            text-align: center;
            color: var(--ink-2);
            font-size: 14px;
            margin-bottom: 48px;
        }

        /* ===== Features ===== */
        .features-section {
            padding: 72px 0;
            border-top: 1px solid var(--line);
            background: var(--surface);
        }
        .features-section .section-sub {
            color: var(--ink-3);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg);
            border: 1px solid var(--line);
            border-radius: 14px;
            padding: 28px 24px;
            transition: transform .25s cubic-bezier(.25, .1, .25, 1), border-color .25s, box-shadow .25s;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            border-color: rgba(212, 169, 92, 0.45);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
        }
        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(212, 169, 92, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }
        .feature-icon svg {
            width: 22px;
            height: 22px;
            stroke: var(--gold);
            fill: none;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .feature-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 13px;
            color: var(--ink-2);
            line-height: 1.6;
        }

        /* ===== Flow ===== */
        .flow-section {
            padding: 72px 0;
            border-top: 1px solid var(--line);
        }
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }
        .flow-step {
            text-align: center;
            padding: 28px 16px 24px;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 14px;
            position: relative;
            transition: border-color .2s, transform .25s;
        }
        .flow-step:hover {
            border-color: rgba(212, 169, 92, 0.45);
            transform: translateY(-4px);
        }
        .step-num {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--gold);
            color: #101112;
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            box-shadow: 0 4px 12px rgba(212, 169, 92, 0.3);
        }
        .flow-step h3 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .flow-step p {
            font-size: 12px;
            color: var(--ink-3);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 72px 0;
            border-top: 1px solid var(--line);
            background: var(--surface);
        }
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--line);
        }
        .faq-item:first-of-type {
            border-top: 1px solid var(--line);
        }
        .faq-item summary {
            list-style: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 0;
            font-size: 16px;
            font-weight: 600;
            transition: color .2s;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--gold);
        }
        .faq-icon {
            width: 22px;
            height: 22px;
            border-radius: 6px;
            border: 1px solid var(--line);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gold);
            font-size: 14px;
            font-weight: 700;
            transition: transform .25s, border-color .25s, background .25s;
            flex-shrink: 0;
            background: var(--bg);
        }
        .faq-item[open] .faq-icon {
            transform: rotate(45deg);
            border-color: var(--gold);
            background: rgba(212, 169, 92, 0.08);
        }
        .faq-answer {
            padding: 0 0 24px 38px;
            font-size: 14px;
            color: var(--ink-2);
            line-height: 1.75;
        }
        .faq-answer p {
            margin: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 96px 0;
            background-image: url('/assets/images/coverpic/cover-1.webp');
            background-size: cover;
            background-position: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, 0.85);
        }
        .cta-content {
            position: relative;
            text-align: center;
            z-index: 1;
        }
        .cta-content h2 {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .cta-content p {
            font-size: 15px;
            color: var(--ink-2);
            margin-bottom: 32px;
        }
        .btn-cta {
            height: 52px;
            padding: 0 40px;
            font-size: 16px;
        }
        .cta-note {
            margin-top: 16px;
            font-size: 11px;
            color: var(--ink-3);
            text-align: center;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #08090C;
            border-top: 2px solid var(--gold);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding: 48px 0 32px;
        }
        .footer-brand .brand-logo {
            font-size: 18px;
        }
        .footer-brand p {
            margin-top: 14px;
            font-size: 13px;
            color: var(--ink-3);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-nav,
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-nav h4,
        .footer-contact h4 {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--ink-1);
        }
        .footer-nav a {
            font-size: 13px;
            color: var(--ink-3);
            transition: color .2s;
        }
        .footer-nav a:hover {
            color: var(--gold);
        }
        .footer-contact p {
            font-size: 13px;
            color: var(--ink-3);
            margin: 0;
        }
        .footer-bottom {
            padding: 20px 0;
            border-top: 1px solid var(--line);
        }
        .footer-bottom-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--ink-3);
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .main-nav {
                gap: 20px;
            }
            .search-form input {
                width: 140px;
            }
            .search-form input:focus {
                width: 170px;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .info-panel {
                position: static;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 767px) {
            .site-container {
                padding: 0 16px;
            }
            .main-nav {
                display: none;
            }
            .header-actions .search-form,
            .header-actions .btn-ghost {
                display: none;
            }
            .menu-toggle {
                display: inline-flex;
            }
            .mobile-menu {
                display: block;
            }
            .category-hero {
                padding: 64px 0 40px;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .category-hero p {
                font-size: 14px;
            }
            .category-body {
                padding: 48px 0 0;
            }
            .guide-card-link {
                flex-direction: column;
                padding: 14px;
            }
            .guide-card-img {
                width: 100%;
            }
            .guide-card-img img {
                aspect-ratio: 16 / 9;
            }
            .guide-card-content p {
                -webkit-line-clamp: 2;
            }
            .section-block {
                padding: 48px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .section-sub {
                margin-bottom: 32px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .flow-grid {
                grid-template-columns: 1fr;
            }
            .faq-item summary {
                font-size: 15px;
            }
            .cta-section {
                padding: 72px 0;
            }
            .cta-content h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom-inner {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }