/* roulang page: index */
:root {
  --color-bg: #0C0F0E;
  --color-panel: #141816;
  --color-panel-light: rgba(255,255,255,0.03);
  --color-primary: #C6F24E;
  --color-accent: #8B7CFF;
  --color-text: #F2F4EF;
  --color-text-secondary: #A0A8A3;
  --color-text-muted: #6B736E;
  --color-border: rgba(255,255,255,0.08);
  --color-border-hover: rgba(198,242,78,0.4);
  --color-warning: #E5A53D;
  --color-error: #E0564F;
  --color-success: #3DD68C;
  --radius-lg: 12px;
  --radius-full: 999px;
  --shadow-hover: 0 10px 30px rgba(0,0,0,0.4);
  --transition: 0.3s ease;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-digital: "Space Grotesk", "Inter", "SF Pro Display", sans-serif;
  --container: 1200px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  transition: all var(--transition);
}

input, select, textarea {
  font-family: inherit;
  font-size: 1rem;
  outline: none;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
}

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

.section {
  padding: 96px 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
}

.section-head h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  letter-spacing: -0.02em;
  margin-top: 8px;
}

.section-kicker {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  border: 1px solid rgba(198,242,78,0.3);
  border-radius: 4px;
  padding: 4px 10px;
  background: rgba(198,242,78,0.06);
}

.section-sub {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  margin-top: 8px;
}

.link-more {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
}

.link-more:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.link-more::after {
  content: "→";
  transition: transform var(--transition);
}

.link-more:hover::after {
  transform: translateX(4px);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-full);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: all var(--transition);
}

.btn:focus-visible {
  outline: 3px solid rgba(198,242,78,0.4);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--color-primary);
  color: #0C0F0E;
}

.btn-primary:hover {
  background: #d5f96a;
  box-shadow: 0 4px 20px rgba(198,242,78,0.25);
  transform: translateY(-2px);
}

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

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid rgba(255,255,255,0.2);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

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

.btn-sm {
  height: 36px;
  padding: 0 16px;
  font-size: 0.8125rem;
  border-radius: var(--radius-full);
}

/* 头部导航 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(12,15,14,0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  background: rgba(12,15,14,0.97);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0C0F0E;
  font-weight: 900;
  font-size: 1.125rem;
  position: relative;
  transition: transform var(--transition);
}

.logo:hover .logo-icon {
  transform: rotate(-8deg) scale(1.05);
}

.logo-text {
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.logo-sub {
  display: block;
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.nav-link {
  position: relative;
  padding: 8px 16px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: 6px;
  transition: color var(--transition);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

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

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

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

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

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

.search-box {
  position: relative;
}

.search-box input {
  height: 40px;
  width: 180px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: rgba(255,255,255,0.03);
  color: var(--color-text);
  padding: 0 40px 0 16px;
  font-size: 0.875rem;
  transition: all var(--transition);
}

.search-box input::placeholder {
  color: var(--color-text-muted);
}

.search-box input:focus {
  width: 240px;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(198,242,78,0.15);
}

.search-box-icon {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--color-text-muted);
  pointer-events: none;
}

.btn-login {
  padding: 8px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: 6px;
  transition: color var(--transition);
}

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

.header-cta {
  height: 40px;
  padding: 0 20px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #0C0F0E;
  font-size: 0.875rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition);
}

.header-cta:hover {
  background: #d5f96a;
  box-shadow: 0 4px 16px rgba(198,242,78,0.25);
  transform: translateY(-1px);
}

.header-cta:active {
  transform: scale(0.98);
}

/* 汉堡 */
.burger {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.burger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

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

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

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

/* 移动端抽屉 */
.mobile-drawer {
  display: none;
  position: fixed;
  top: 0;
  right: -100%;
  width: 320px;
  height: 100vh;
  z-index: 999;
  background: #111513;
  border-left: 1px solid var(--color-border);
  padding: 96px 32px 32px;
  flex-direction: column;
  gap: 8px;
  transition: right 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.mobile-drawer.open {
  right: 0;
}

.mobile-drawer .nav-link {
  font-size: 1.0625rem;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  color: var(--color-text);
}

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

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

.mobile-drawer-cta {
  margin-top: 24px;
}

.mobile-drawer .btn-primary {
  width: 100%;
}

.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 998;
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}

.mobile-overlay.show {
  display: block;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-image: linear-gradient(to right, rgba(12,15,14,0.9) 0%, rgba(12,15,14,0.7) 50%, rgba(12,15,14,0.45) 100%), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  padding: 140px 0 80px;
}

.hero-content {
  max-width: 760px;
  position: relative;
  z-index: 2;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  background: rgba(198,242,78,0.1);
  border: 1px solid rgba(198,242,78,0.35);
  border-radius: 4px;
  padding: 6px 14px;
  margin-bottom: 24px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2.5rem, 5.5vw, 4.5rem);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero h1 .break {
  display: block;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 540px;
  line-height: 1.8;
  margin-bottom: 36px;
}

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

.hero-note {
  margin-top: 20px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-note::before {
  content: "✓";
  color: var(--color-success);
  font-weight: 700;
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  z-index: 2;
}

.hero-scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
  position: relative;
  overflow: hidden;
}

.hero-scroll-line::after {
  content: "";
  position: absolute;
  top: -50%;
  left: 0;
  width: 100%;
  height: 50%;
  background: var(--color-primary);
  animation: scrollDot 2s infinite;
}

@keyframes scrollDot {
  0% { top: -50%; }
  100% { top: 100%; }
}

/* 三步 */
.steps {
  position: relative;
  background: var(--color-bg);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  position: relative;
}

.steps-grid::before {
  content: "";
  position: absolute;
  top: 56px;
  left: 15%;
  right: 15%;
  height: 1px;
  background: linear-gradient(to right, var(--color-primary), rgba(198,242,78,0.2), transparent);
}

.step-item {
  position: relative;
  z-index: 1;
  padding: 0 8px;
}

.step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 2px solid rgba(198,242,78,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-digital);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-bg);
  margin-bottom: 24px;
  transition: all var(--transition);
}

.step-item:hover .step-number,
.step-item.is-visible .step-number {
  background: var(--color-primary);
  color: #0C0F0E;
  box-shadow: 0 0 0 8px rgba(198,242,78,0.1);
}

.step-item h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-item p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.step-icon {
  margin-top: 16px;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--color-panel-light);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
}

/* 特色 */
.features {
  background: var(--color-panel-light);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.features-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}

.feature-main {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  min-height: 420px;
  transition: all var(--transition);
}

.feature-main:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-hover);
}

.feature-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}

.feature-main::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(12,15,14,0.95) 0%, rgba(12,15,14,0.3) 60%, transparent 100%);
}

.feature-main-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px;
  z-index: 2;
}

.feature-main-content .feature-num {
  font-family: var(--font-digital);
  font-size: 0.875rem;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: 8px;
  display: block;
}

.feature-main-content h3 {
  font-size: 1.625rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.feature-main-content p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  max-width: 340px;
}

.feature-side {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 24px;
}

.feature-card {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--color-primary);
  transition: height 0.4s ease;
}

.feature-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.feature-card:hover::before {
  height: 100%;
}

.feature-num {
  font-family: var(--font-digital);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
  display: block;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* 版本对比 */
.compare {
  position: relative;
}

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

.compare-card {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  position: relative;
  transition: all var(--transition);
}

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

.compare-card.recommended {
  border: 2px solid var(--color-primary);
  box-shadow: 0 10px 30px rgba(198,242,78,0.08);
  transform: translateY(-16px);
}

.compare-card.recommended:hover {
  transform: translateY(-18px);
  box-shadow: 0 16px 40px rgba(198,242,78,0.14);
}

.compare-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #0C0F0E;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  letter-spacing: 0.06em;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 4px;
}

.compare-badge::before {
  content: "→";
  font-weight: 900;
}

.compare-name {
  font-size: 1.3125rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.compare-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  line-height: 1.6;
}

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

.compare-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.compare-list li::before {
  content: "✓";
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(198,242,78,0.15);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.compare-card .btn {
  width: 100%;
}

/* CTA横幅 */
.cta-banner {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-image: linear-gradient(to right, rgba(12,15,14,0.92), rgba(12,15,14,0.7)), url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  padding: 72px 56px;
  text-align: center;
  border: 1px solid var(--color-border);
}

.cta-banner h2 {
  font-size: clamp(1.75rem, 3vw, 2.375rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.cta-banner p {
  color: var(--color-text-secondary);
  font-size: 1rem;
  max-width: 480px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.cta-banner .btn {
  margin: 0 8px;
}

.cta-note {
  margin-top: 16px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* 最新动态 */
.news {
  background: var(--color-bg);
}

.news-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.news-feature {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.news-feature:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.news-feature-img {
  width: 100%;
  height: 260px;
  overflow: hidden;
}

.news-feature-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.news-feature:hover .news-feature-img img {
  transform: scale(1.03);
}

.news-feature-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(198,242,78,0.08);
  border: 1px solid rgba(198,242,78,0.2);
  border-radius: 4px;
  padding: 3px 10px;
  margin-bottom: 14px;
  align-self: flex-start;
}

.news-feature h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
}

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

.news-feature-body p {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}

.news-feature-body time {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  font-family: var(--font-digital);
}

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

.news-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}

.news-item:hover {
  border-color: var(--color-border-hover);
  background: rgba(198,242,78,0.03);
  transform: translateX(4px);
}

.news-item .news-tag {
  margin-bottom: 0;
  flex-shrink: 0;
}

.news-item-title {
  flex: 1;
  font-size: 0.9375rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-item time {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  font-family: var(--font-digital);
  flex-shrink: 0;
}

.news-arrow {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  transition: all var(--transition);
  flex-shrink: 0;
}

.news-item:hover .news-arrow {
  color: var(--color-primary);
  transform: translateX(4px);
}

.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 24px;
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text-secondary);
}

.news-empty-icon {
  display: block;
  font-size: 2.5rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

/* FAQ */
.faq {
  background: var(--color-panel-light);
  border-top: 1px solid var(--color-border);
}

.faq-list {
  max-width: 840px;
  margin: 0 auto;
}

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

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

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  transition: color var(--transition);
}

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

.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--color-text-secondary);
  transition: all var(--transition);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer-inner {
  padding: 0 0 24px;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

/* 页脚 */
.footer {
  background: #080A09;
  border-top: 1px solid var(--color-border);
  padding: 80px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
}

.footer-brand .logo-text {
  font-size: 1.25rem;
}

.footer-brand p {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-top: 16px;
  max-width: 280px;
  line-height: 1.7;
}

.footer h4 {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text);
  margin-bottom: 20px;
}

.footer-links a {
  display: block;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  padding: 6px 0;
  transition: color var(--transition), padding-left var(--transition);
}

.footer-links a:hover {
  color: var(--color-primary);
  padding-left: 6px;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

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

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

/* 回到顶部 */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  z-index: 500;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
}

.back-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-top:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* 滚动渐入 */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* 响应式 */
@media (max-width: 1024px) {
  .nav {
    display: none;
  }

  .burger {
    display: flex;
  }

  .mobile-drawer {
    display: flex;
  }

  .search-box input {
    width: 140px;
  }

  .search-box input:focus {
    width: 180px;
  }

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

  .feature-main {
    min-height: 320px;
  }

  .feature-side {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr;
  }

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

  .compare-card.recommended {
    transform: translateY(0);
  }

  .compare-card.recommended:hover {
    transform: translateY(-4px);
  }

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

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

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  .header-inner {
    padding: 0 20px;
  }

  .search-box {
    display: none;
  }

  .btn-login {
    display: none;
  }

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

  .steps-grid::before {
    display: none;
  }

  .step-item {
    padding: 0;
  }

  .hero {
    padding: 120px 0 60px;
    min-height: 80vh;
  }

  .hero h1 {
    font-size: clamp(2.2rem, 8vw, 3.2rem);
  }

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

  .cta-banner {
    padding: 48px 24px;
  }

  .cta-banner .btn {
    margin: 8px 4px;
    width: calc(100% - 16px);
  }

  .feature-side {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  .header-inner {
    padding: 0 16px;
  }

  .logo-sub {
    display: none;
  }

  .header-cta {
    padding: 0 16px;
    font-size: 0.8125rem;
  }

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

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

  .news-item .news-tag {
    margin-bottom: 4px;
  }

  .news-item-title {
    width: 100%;
    order: 3;
    white-space: normal;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
  }

  .news-arrow {
    display: none;
  }

  .back-top {
    bottom: 20px;
    right: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* roulang page: article */
:root{
--bg:#0C0F0E;--panel:#141816;--panel-2:rgba(255,255,255,0.03);
--primary:#C6F24E;--primary-hover:#D4F66F;--purple:#8B7CFF;
--text:#F2F4EF;--text-2:#A0A8A3;--text-3:#6B736E;
--border:rgba(255,255,255,0.08);--border-hover:rgba(198,242,78,0.4);
--radius-card:12px;--radius-btn:999px;--radius-tag:4px;
--shadow:0 10px 30px rgba(0,0,0,0.4);--header-h:72px;
--container-w:1200px;--spacer:96px}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;line-height:1.2}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit;border:none;outline:none;background:none;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
.container{max-width:var(--container-w);margin:0 auto;padding:0 24px}
@media(max-width:1023px){.container{padding:0 20px}}
@media(max-width:767px){.container{padding:0 16px}}

/* ===== Header ===== */
.header{position:sticky;top:0;z-index:100;height:var(--header-h);
background:rgba(12,15,14,0.92);border-bottom:1px solid var(--border);
backdrop-filter:blur(12px)}
.header-inner{max-width:var(--container-w);margin:0 auto;padding:0 24px;
height:var(--header-h);display:flex;align-items:center;gap:32px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{width:36px;height:36px;border-radius:9px;background:var(--primary);
color:#0C0F0E;display:flex;align-items:center;justify-content:center;
font-size:17px;font-weight:900}
.logo-text{display:block;font-size:1.1rem;font-weight:800;letter-spacing:-0.01em;
color:var(--text);line-height:1.1}
.logo-sub{display:block;font-size:0.7rem;color:var(--text-3);letter-spacing:0.08em}
.nav{display:flex;align-items:center;gap:24px;margin-left:8px}
.nav-link{position:relative;font-size:0.9375rem;font-weight:500;color:var(--text-2);
padding:6px 2px;transition:color .3s}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
background:var(--primary);transition:width .3s}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:16px;margin-left:auto}
.search-box{position:relative;display:flex;align-items:center}
.search-box input{width:180px;height:40px;padding:0 16px 0 38px;border-radius:var(--radius-btn);
border:1px solid var(--border);background:var(--panel-2);color:var(--text);
transition:width .3s,border-color .3s}
.search-box input:focus{width:240px;border-color:var(--primary);
box-shadow:0 0 0 3px rgba(198,242,78,0.15)}
.search-box input::placeholder{color:var(--text-3)}
.search-box-icon{position:absolute;left:14px;width:16px;height:16px;color:var(--text-3);pointer-events:none}
.btn-login{font-size:0.9375rem;color:var(--text-2);padding:6px 10px;border-radius:6px;transition:color .3s}
.btn-login:hover{color:var(--primary)}
.header-cta{height:40px;padding:0 22px;display:inline-flex;align-items:center;justify-content:center;
background:var(--primary);color:#0C0F0E;font-size:0.9375rem;font-weight:700;border-radius:var(--radius-btn);
transition:background .3s,transform .3s}
.header-cta:hover{background:var(--primary-hover);transform:translateY(-1px)}
.burger{display:none;flex-direction:column;gap:5px;width:40px;height:40px;
align-items:center;justify-content:center;border-radius:8px;cursor:pointer}
.burger span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:transform .3s,opacity .3s}
.burger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.active span:nth-child(2){opacity:0}
.burger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:767px){
.header-inner{gap:16px}
.nav{display:none;position:fixed;top:60px;right:0;width:260px;height:calc(100vh - 60px);
background:#101411;border-left:1px solid var(--border);flex-direction:column;align-items:flex-start;
padding:32px 24px;gap:20px;z-index:99}
.nav.open{display:flex}
.header-actions{display:none}
.header-cta{display:none}
.burger{display:flex}
.header-inner{height:60px}
.header{height:60px}
}

/* ===== Article Banner ===== */
.article-banner{position:relative;padding:56px 0 40px;background-size:cover;background-position:center}
.article-banner .banner-overlay{position:absolute;inset:0;
background:linear-gradient(180deg,rgba(12,15,14,0.72) 0%,rgba(12,15,14,0.94) 100%)}
.article-banner .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:0.8125rem;color:var(--text-3);
margin-bottom:28px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-2);transition:color .3s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-3)}
.article-header{max-width:860px}
.article-category{display:inline-block;background:rgba(198,242,78,0.14);
color:var(--primary);padding:4px 12px;border-radius:var(--radius-tag);
font-size:0.75rem;font-weight:600;letter-spacing:0.1em;margin-bottom:16px}
.article-title{font-size:clamp(1.75rem,3.5vw,2.75rem);line-height:1.15;
font-weight:800;letter-spacing:-0.02em;color:var(--text);margin-bottom:18px}
.article-meta{display:flex;align-items:center;gap:14px;font-size:0.8125rem;color:var(--text-3);flex-wrap:wrap}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3)}
@media(max-width:767px){
.article-banner{padding:40px 0 28px}
.article-meta{gap:10px}
}

/* ===== Article Body ===== */
.article-main{padding:48px 0 0}
.article-body{max-width:760px;margin:0 auto;padding:0 16px}
.article-body p{margin-bottom:1.5em;color:rgba(255,255,255,0.87);font-size:1rem;line-height:1.8}
.article-body h2{font-size:1.5rem;margin:2em 0 1em;padding-left:16px;
border-left:4px solid var(--primary);line-height:1.3}
.article-body h3{font-size:1.25rem;margin:1.6em 0 0.8em;color:var(--text)}
.article-body ul{list-style:disc;padding-left:1.5em;margin-bottom:1.5em;color:rgba(255,255,255,0.87)}
.article-body ol{list-style:decimal;padding-left:1.5em;margin-bottom:1.5em;color:rgba(255,255,255,0.87)}
.article-body li{margin-bottom:0.4em}
.article-body blockquote{border-left:3px solid var(--primary);background:var(--panel);
padding:16px 20px;margin:1.5em 0;border-radius:0 var(--radius-card) var(--radius-card) 0;
color:var(--text-2)}
.article-body blockquote p{margin-bottom:0}
.article-body a{color:var(--primary);border-bottom:1px solid transparent;transition:border-color .3s}
.article-body a:hover{border-bottom-color:var(--primary)}
.article-body img{border-radius:var(--radius-card);margin:1.5em 0;width:100%;object-fit:cover}
.article-body table{border:1px solid var(--border);border-radius:var(--radius-card);
margin:1.5em 0;overflow:hidden;font-size:0.9375rem}
.article-body th{background:var(--panel);color:var(--text);padding:12px 16px;
border-bottom:1px solid var(--border);text-align:left;font-weight:600}
.article-body td{padding:12px 16px;border-bottom:1px solid var(--border);color:var(--text-2)}
.article-body tr:last-child td{border-bottom:none}
.article-body code{background:#1A1F1D;padding:2px 6px;border-radius:4px;
font-family:"Space Grotesk",monospace;font-size:0.875em;color:var(--primary)}
.article-body pre{background:#1A1F1D;padding:20px;border-radius:var(--radius-card);
overflow-x:auto;margin:1.5em 0;border:1px solid var(--border)}
.article-body pre code{background:none;padding:0;color:var(--text)}
.article-body hr{border:none;border-top:1px solid var(--border);margin:2em 0}

/* ===== Not Found ===== */
.not-found{text-align:center;padding:80px 24px;background:var(--panel);
border-radius:var(--radius-card);border:1px solid var(--border)}
.not-found .icon{font-size:2.5rem;margin-bottom:16px;color:var(--text-3)}
.not-found h2{font-size:1.5rem;margin-bottom:10px}
.not-found p{color:var(--text-2);margin-bottom:24px}
.not-found a{display:inline-block;padding:10px 28px;background:var(--primary);
color:#0C0F0E;font-weight:700;border-radius:var(--radius-btn);transition:background .3s}
.not-found a:hover{background:var(--primary-hover)}

/* ===== Article Footer ===== */
.article-footer{max-width:760px;margin:48px auto 0;padding:0 16px;
border-top:1px solid var(--border);padding-top:28px}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px}
.tag{display:inline-block;padding:5px 14px;background:var(--panel-2);
border:1px solid var(--border);border-radius:var(--radius-tag);
font-size:0.8125rem;color:var(--text-2);transition:background .3s,border-color .3s,color .3s}
.tag:hover{background:rgba(198,242,78,0.08);border-color:var(--border-hover);color:var(--primary)}
.btn-share{display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 18px;
border:1px solid var(--border);border-radius:var(--radius-btn);font-size:0.8125rem;
color:var(--text-2);cursor:pointer;transition:border-color .3s,color .3s}
.btn-share:hover{border-color:var(--primary);color:var(--primary)}
.btn-share svg{width:14px;height:14px}

/* ===== Related ===== */
.related-section{max-width:760px;margin:56px auto 0;padding:0 16px}
.related-section .section-title{font-size:1.25rem;font-weight:700;margin-bottom:20px;
position:relative;padding-left:14px}
.related-section .section-title::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:4px;background:var(--primary)}
.related-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.related-card{display:block;background:var(--panel);border:1px solid var(--border);
border-radius:var(--radius-card);padding:22px;transition:transform .3s,border-color .3s,box-shadow .3s}
.related-card:hover{transform:translateY(-4px);border-color:var(--border-hover);box-shadow:var(--shadow)}
.related-card h3{font-size:1rem;font-weight:600;color:var(--text);margin-bottom:8px;line-height:1.4}
.related-card p{font-size:0.8125rem;color:var(--text-2);line-height:1.6;margin-bottom:14px;
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:0.75rem;color:var(--text-3)}
.related-meta .arrow{color:var(--primary);font-size:1rem;transition:transform .3s}
.related-card:hover .arrow{transform:translateX(4px)}
@media(max-width:520px){
.related-list{grid-template-columns:1fr}
}

/* ===== CTA Compact ===== */
.cta-compact{max-width:1200px;margin:80px auto 0;padding:0 24px}
.cta-inner{position:relative;overflow:hidden;background:linear-gradient(135deg,#141816 0%,#1A2019 60%,#0C0F0E 100%);
border:1px solid var(--border);border-radius:16px;padding:48px 32px;text-align:center}
.cta-inner::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;
background:linear-gradient(90deg,transparent,var(--primary),transparent)}
.cta-inner h2{font-size:clamp(1.5rem,2.5vw,2rem);font-weight:800;margin-bottom:12px}
.cta-inner p{color:var(--text-2);max-width:560px;margin:0 auto 28px;font-size:0.9375rem}
.cta-btn{display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 32px;
background:var(--primary);color:#0C0F0E;font-weight:700;border-radius:var(--radius-btn);
transition:background .3s,transform .3s}
.cta-btn:hover{background:var(--primary-hover);transform:translateY(-2px)}
.cta-btn span{transition:transform .3s}
.cta-btn:hover span{transform:translateX(4px)}
@media(max-width:767px){
.cta-compact{margin-top:56px;padding:0 16px}
.cta-inner{padding:40px 20px}
}

/* ===== Footer ===== */
.footer{background:#080A09;border-top:1px solid var(--border);padding:80px 0 32px;margin-top:80px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;margin-bottom:48px}
.footer-brand p{color:var(--text-2);font-size:0.875rem;max-width:320px;margin-top:14px;line-height:1.7}
.footer-links h4{font-size:0.875rem;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-links a{display:block;color:var(--text-2);font-size:0.875rem;padding:6px 0;
transition:color .3s}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
padding-top:24px;border-top:1px solid var(--border)}
.footer-bottom p{margin:0;color:var(--text-3);font-size:0.8125rem}
.footer-bottom a{color:var(--text-3);transition:color .3s}
.footer-bottom a:hover{color:var(--primary)}
@media(max-width:1023px){
.footer-grid{grid-template-columns:1fr 1fr}
.footer-brand{grid-column:1 / -1}
}
@media(max-width:520px){
.footer{padding-top:56px}
.footer-grid{grid-template-columns:1fr;gap:32px}
.footer-bottom{flex-direction:column;text-align:center}
}

/* ===== Motion ===== */
@media(prefers-reduced-motion:reduce){
*,*::before,*::after{animation:none!important;transition:none!important}
html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root {
  --bg: #0C0F0E;
  --panel: #141816;
  --panel-light: rgba(255, 255, 255, 0.03);
  --primary: #C6F24E;
  --secondary: #8B7CFF;
  --text: #F2F4EF;
  --text-secondary: #A0A8A3;
  --text-muted: #6B736E;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(198, 242, 78, 0.4);
  --success: #3DD68C;
  --warning: #E5A53D;
  --radius: 12px;
  --radius-sm: 4px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  --font-cn: -apple-system, BlinkMacSystemFont, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-num: "Space Grotesk", "Inter", "SF Mono", monospace;
  --section-space: 96px;
  --header-h: 72px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  font-family: var(--font-cn);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; font-size: inherit; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
main { display: block; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.9375rem;
  line-height: 1;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}
.btn svg { transition: transform 0.3s ease; }
.btn:hover svg { transform: translateX(4px); }
.btn:active { transform: scale(0.98); }
.btn-primary {
  background: var(--primary);
  color: #0C0F0E;
}
.btn-primary:hover { background: #d3f76f; }
.btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(12, 15, 14, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #0C0F0E;
  border-radius: 8px;
  font-size: 18px;
  font-weight: 700;
}
.logo-text { display: block; font-size: 1.0625rem; font-weight: 800; line-height: 1.2; letter-spacing: 0.02em; }
.logo-sub { display: block; font-size: 0.6875rem; font-weight: 500; color: var(--text-secondary); letter-spacing: 0.18em; text-transform: uppercase; }
.nav { display: flex; align-items: center; gap: 24px; margin-left: auto; }
.nav-link {
  position: relative;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 2px;
  transition: color 0.3s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.nav-link:hover { color: var(--primary); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: var(--primary); }
.nav-link.active::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.search-box {
  position: relative;
  width: 180px;
  transition: width 0.3s ease;
}
.search-box:focus-within { width: 240px; }
.search-box input {
  width: 100%;
  height: 38px;
  padding: 0 16px 0 38px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.875rem;
  color: var(--text);
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(198, 242, 78, 0.15);
}
.search-box input::placeholder { color: var(--text-muted); }
.search-box-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  pointer-events: none;
}
.btn-login {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: 8px;
  transition: color 0.3s;
}
.btn-login:hover { color: var(--primary); }
.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 22px;
  background: var(--primary);
  color: #0C0F0E;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 700;
  transition: background 0.3s, transform 0.2s;
}
.header-cta:hover { background: #d3f76f; }
.header-cta:active { transform: scale(0.97); }
.burger { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; }
.burger span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: all 0.3s; }
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: calc(var(--header-h) + 80px) 0 72px;
  background: linear-gradient(rgba(12, 15, 14, 0.78), rgba(12, 15, 14, 0.94)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom: 1px solid var(--border);
}
.page-hero .container { position: relative; }
.page-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(198, 242, 78, 0.12);
  border: 1px solid rgba(198, 242, 78, 0.3);
  color: var(--primary);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 4px;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}
.page-hero h1 {
  font-size: clamp(2.25rem, 4.5vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 800;
  margin-bottom: 16px;
}
.page-hero .hero-desc {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.8;
}
.hero-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.hero-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-muted);
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 999px;
}
.hero-meta-item .dot { color: var(--primary); }

/* ===== Guide Section ===== */
.guide-section { padding: 96px 0; border-bottom: 1px solid var(--border); }
.guide-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 60px;
  align-items: start;
}
.guide-toc {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
}
.guide-toc-title {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.guide-toc a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: all 0.3s;
}
.guide-toc a span { font-family: var(--font-num); font-size: 0.8125rem; color: var(--primary); font-weight: 600; }
.guide-toc a:hover { background: rgba(255, 255, 255, 0.04); color: var(--text); }
.guide-toc a.active { background: rgba(198, 242, 78, 0.08); color: var(--primary); }
.guide-content { min-width: 0; }
.guide-content h2 {
  font-size: 1.625rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
  padding-left: 16px;
  border-left: 4px solid var(--primary);
  letter-spacing: -0.01em;
}
.guide-content p { color: var(--text-secondary); line-height: 1.85; margin-bottom: 16px; font-size: 0.9688rem; }
.guide-content .guide-block { margin-bottom: 48px; }
.guide-block:last-child { margin-bottom: 0; }
.guide-subhead {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--text);
  font-weight: 700;
  margin-bottom: 12px;
}
.guide-subhead::before { content: ""; width: 6px; height: 6px; background: var(--primary); border-radius: 50%; }
.guide-list { margin-bottom: 16px; }
.guide-list li {
  position: relative;
  padding-left: 24px;
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.9688rem;
  margin-bottom: 8px;
}
.guide-list li::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 13px;
  width: 6px;
  height: 6px;
  border: 1.5px solid var(--primary);
  border-radius: 50%;
}
.guide-steps { display: grid; gap: 16px; margin: 24px 0; }
.guide-step {
  display: flex;
  gap: 16px;
  background: var(--panel-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: border-color 0.3s, background 0.3s;
}
.guide-step:hover { border-color: var(--border-hover); background: rgba(198, 242, 78, 0.03); }
.guide-step-num {
  font-family: var(--font-num);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 4px;
}
.guide-step-body h3 { font-size: 1.0625rem; font-weight: 600; margin-bottom: 6px; }
.guide-step-body p { font-size: 0.9375rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 0; }

/* ===== Resources ===== */
.resources { padding: 96px 0; border-bottom: 1px solid var(--border); }
.section-head { margin-bottom: 44px; }
.section-head h2 { font-size: clamp(1.75rem, 3vw, 2.25rem); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 10px; }
.section-head p { color: var(--text-secondary); font-size: 1rem; max-width: 560px; }
.resource-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.resource-card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  position: relative;
}
.resource-card:hover {
  transform: translateY(-4px);
  border-color: rgba(198, 242, 78, 0.4);
  box-shadow: var(--shadow);
}
.resource-card-img { position: relative; overflow: hidden; }
.resource-card-img img { width: 100%; height: 220px; object-fit: cover; transition: transform 0.4s ease; }
.resource-card:hover .resource-card-img img { transform: scale(1.03); }
.resource-card-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(12, 15, 14, 0.6) 100%);
}
.resource-card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  background: var(--primary);
  color: #0C0F0E;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 4px;
  letter-spacing: 0.06em;
}
.resource-card-body { padding: 24px; }
.resource-card-body h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 8px; transition: color 0.3s; }
.resource-card:hover .resource-card-body h3 { color: var(--primary); }
.resource-card-body p { color: var(--text-secondary); font-size: 0.9375rem; line-height: 1.7; margin-bottom: 16px; }
.resource-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  transition: color 0.3s;
}
.resource-card:hover .resource-link { color: var(--primary); }
.resource-link svg { transition: transform 0.3s; }
.resource-card:hover .resource-link svg { transform: translateX(4px); }

/* ===== FAQ ===== */
.faq { padding: 96px 0; border-bottom: 1px solid var(--border); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.3s;
}
.faq-item:hover { border-color: rgba(198, 242, 78, 0.25); }
.faq-item summary {
  cursor: pointer;
  padding: 20px 24px;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  list-style: none;
  transition: color 0.3s;
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--primary); }
.faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  position: relative;
  border: 1px solid var(--border);
  border-radius: 50%;
  transition: all 0.3s;
}
.faq-icon::before, .faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--text-muted);
  transition: all 0.3s;
}
.faq-icon::before { width: 10px; height: 1.5px; }
.faq-icon::after { width: 1.5px; height: 10px; }
.faq-item[open] { border-color: rgba(198, 242, 78, 0.4); }
.faq-item[open] summary { color: var(--primary); }
.faq-item[open] .faq-icon { border-color: var(--primary); }
.faq-item[open] .faq-icon::before, .faq-item[open] .faq-icon::after { background: var(--primary); }
.faq-item[open] .faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq-answer {
  padding: 0 24px 22px;
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.9688rem;
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin-top: 0;
}
.faq-answer a { color: var(--primary); }

/* ===== CTA Light ===== */
.cta-light-section { padding: 80px 0; }
.cta-light {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}
.cta-light::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(198, 242, 78, 0.08), transparent 70%);
  pointer-events: none;
}
.cta-light-text h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 8px; letter-spacing: -0.01em; }
.cta-light-text p { color: var(--text-secondary); font-size: 0.9375rem; line-height: 1.7; }
.cta-light-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.cta-hint { font-size: 0.8125rem; color: var(--text-muted); max-width: 220px; line-height: 1.5; }

/* ===== Footer ===== */
.footer {
  background: #070908;
  border-top: 1px solid var(--border);
  padding: 80px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 56px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { color: var(--text-muted); font-size: 0.9375rem; line-height: 1.7; max-width: 320px; }
.footer-links h4 { font-size: 0.875rem; font-weight: 700; color: var(--text); margin-bottom: 16px; letter-spacing: 0.04em; }
.footer-links a {
  display: block;
  color: var(--text-muted);
  font-size: 0.9375rem;
  padding: 6px 0;
  transition: color 0.3s;
}
.footer-links a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { color: var(--text-muted); font-size: 0.875rem; }
.footer-bottom a { color: var(--text-muted); transition: color 0.3s; }
.footer-bottom a:hover { color: var(--primary); }

/* ===== Back to top ===== */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 998;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .header-inner { gap: 20px; }
  .nav { gap: 16px; }
  .search-box { width: 140px; }
  .search-box:focus-within { width: 180px; }
  .guide-layout { grid-template-columns: 220px minmax(0, 1fr); gap: 40px; }
  .cta-light { padding: 40px 32px; }
}
@media (max-width: 767px) {
  :root { --header-h: 60px; --section-space: 64px; }
  .header-inner { padding: 0 16px; gap: 12px; }
  .nav {
    position: fixed;
    top: var(--header-h);
    right: -100%;
    width: 78%;
    max-width: 320px;
    height: calc(100vh - var(--header-h));
    background: rgba(12, 15, 14, 0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 32px 28px;
    transition: right 0.3s ease;
    border-left: 1px solid var(--border);
    z-index: 999;
    margin: 0;
  }
  .nav.open { right: 0; }
  .nav-link { font-size: 1.0625rem; padding: 12px 0; width: 100%; }
  .header-actions {
    position: fixed;
    top: auto;
    bottom: 0;
    right: -100%;
    width: 78%;
    max-width: 320px;
    background: rgba(12, 15, 14, 0.98);
    padding: 24px 28px 32px;
    border-left: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
    transition: right 0.3s ease;
    z-index: 1000;
    border-top: 1px solid var(--border);
  }
  .header-actions.open { right: 0; }
  .search-box { width: 100%; }
  .search-box:focus-within { width: 100%; }
  .btn-login { text-align: center; padding: 12px; border: 1px solid var(--border); border-radius: 999px; }
  .header-cta { justify-content: center; }
  .burger { display: flex; }
  .page-hero { padding: calc(var(--header-h) + 48px) 0 48px; }
  .page-hero h1 { font-size: 2rem; }
  .guide-section { padding: 64px 0; }
  .guide-layout { grid-template-columns: 1fr; gap: 32px; }
  .guide-toc {
    position: static;
    padding: 20px;
    overflow-x: auto;
  }
  .guide-toc-title { margin-bottom: 12px; }
  .guide-toc nav { display: flex; flex-wrap: wrap; gap: 4px; }
  .guide-toc a { padding: 8px 12px; font-size: 0.875rem; white-space: nowrap; }
  .guide-content h2 { font-size: 1.375rem; }
  .guide-step { flex-direction: column; gap: 10px; padding: 16px 18px; }
  .resources { padding: 64px 0; }
  .resource-grid { grid-template-columns: 1fr; gap: 16px; }
  .faq { padding: 64px 0; }
  .cta-light-section { padding: 56px 0; }
  .cta-light { padding: 32px 24px; flex-direction: column; align-items: flex-start; gap: 24px; }
  .footer { padding: 56px 0 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .page-hero h1 { font-size: 1.75rem; }
  .hero-meta-item { font-size: 0.8125rem; }
  .resource-card-img img { height: 180px; }
  .faq-item summary { font-size: 1rem; padding: 16px 18px; }
  .faq-answer { padding: 0 18px 18px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* roulang page: category2 */
:root {
  --bg: #0C0F0E;
  --panel: #141816;
  --panel-2: rgba(255, 255, 255, 0.03);
  --primary: #C6F24E;
  --purple: #8B7CFF;
  --text: #F2F4EF;
  --text-secondary: #A0A8A3;
  --text-muted: #6B736E;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(198, 242, 78, 0.4);
  --warning: #E5A53D;
  --success: #3DD68C;
  --error: #E0564F;
  --radius: 12px;
  --radius-sm: 4px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "Space Grotesk", "SF Mono", "Consolas", monospace;
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
}

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

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease;
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

input {
  font-family: inherit;
  border: none;
  outline: none;
  background: none;
  color: inherit;
}

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

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

/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  background: var(--primary);
  color: #0C0F0E;
  font-weight: 700;
  font-size: 0.9375rem;
  border: 2px solid var(--primary);
  transition: all 0.3s ease;
  letter-spacing: 0.02em;
}

.btn-primary svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s ease;
}

.btn-primary:hover {
  background: #d4fa66;
  border-color: #d4fa66;
  box-shadow: 0 6px 24px rgba(198, 242, 78, 0.18);
  transform: translateY(-1px);
}

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

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

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: all 0.3s ease;
  letter-spacing: 0.02em;
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}

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

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 48px;
  padding: 0 8px;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: color 0.3s ease;
}

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

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(12, 15, 14, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1320px;
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
  position: relative;
}

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

.logo-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--primary);
  border-radius: 8px;
  color: var(--primary);
  font-size: 18px;
  font-weight: 900;
  transition: background 0.3s ease;
}

.logo:hover .logo-icon {
  background: var(--primary);
  color: #0C0F0E;
}

.logo-text {
  display: block;
  font-size: 1.0625rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.logo-sub {
  display: block;
  font-size: 0.6875rem;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  line-height: 1.3;
}

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

.nav-link {
  position: relative;
  padding: 8px 18px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 6px;
  transition: color 0.3s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

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

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

.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.search-box {
  position: relative;
  width: 180px;
  transition: width 0.3s ease;
}

.search-box:focus-within {
  width: 240px;
}

.search-box input {
  width: 100%;
  height: 40px;
  padding: 0 16px 0 40px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.875rem;
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(198, 242, 78, 0.15);
}

.search-box-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  pointer-events: none;
}

.btn-login {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 8px 4px;
  transition: color 0.3s ease;
}

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

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  padding: 0 24px;
  border-radius: 999px;
  background: var(--primary);
  color: #0C0F0E;
  font-weight: 700;
  font-size: 0.875rem;
  border: 2px solid var(--primary);
  transition: all 0.3s ease;
}

.header-cta:hover {
  background: #d4fa66;
  border-color: #d4fa66;
  box-shadow: 0 4px 20px rgba(198, 242, 78, 0.2);
  transform: translateY(-1px);
}

.header-cta:active {
  transform: scale(0.97);
}

.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  padding: 0 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
}

.burger span {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.burger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.burger.open span:nth-child(2) {
  opacity: 0;
}

.burger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: 120px 0 90px;
  background: linear-gradient(180deg, rgba(12, 15, 14, 0.6) 0%, rgba(12, 15, 14, 0.82) 60%, var(--bg) 100%);
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  z-index: -1;
}

.page-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(139, 124, 255, 0.12) 0%, transparent 70%);
  z-index: -1;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color 0.3s ease;
}

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

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

.breadcrumb .current {
  color: var(--primary);
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(198, 242, 78, 0.1);
  border: 1px solid rgba(198, 242, 78, 0.25);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.page-hero h1 {
  font-size: clamp(2.5rem, 5.5vw, 4.25rem);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  max-width: 820px;
}

.page-hero-sub {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 620px;
  margin-bottom: 32px;
}

.page-hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== Section ===== */
.section {
  padding: 96px 0;
}

.section-head {
  max-width: 720px;
  margin-bottom: 48px;
}

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

.tag-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(139, 124, 255, 0.12);
  border: 1px solid rgba(139, 124, 255, 0.25);
  color: var(--purple);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.section-sub {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Timeline ===== */
.timeline-section {
  padding: 96px 0;
  background: radial-gradient(ellipse at 20% 30%, rgba(198, 242, 78, 0.04) 0%, transparent 50%);
}

.timeline {
  position: relative;
  max-width: 880px;
}

.timeline-item {
  position: relative;
  display: flex;
  gap: 32px;
  padding-bottom: 48px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-marker {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  width: 80px;
}

.timeline-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  background: var(--bg);
  z-index: 2;
  transition: background 0.3s ease, box-shadow 0.3s ease;
  flex-shrink: 0;
}

.timeline-item:hover .timeline-dot,
.timeline-item.active .timeline-dot {
  background: var(--primary);
  box-shadow: 0 0 0 6px rgba(198, 242, 78, 0.12);
}

.timeline-version {
  margin-top: 8px;
  font-family: var(--font-num);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 40px;
  top: 28px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, rgba(198, 242, 78, 0.4) 0%, rgba(198, 242, 78, 0.05) 100%);
}

.timeline-item:last-child::before {
  display: none;
}

.timeline-card {
  flex: 1;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.timeline-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.timeline-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.timeline-date {
  font-family: var(--font-num);
  font-size: 0.8125rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-primary {
  background: rgba(198, 242, 78, 0.15);
  color: var(--primary);
  border: 1px solid rgba(198, 242, 78, 0.25);
}

.badge-purple {
  background: rgba(139, 124, 255, 0.15);
  color: var(--purple);
  border: 1px solid rgba(139, 124, 255, 0.25);
}

.badge-warning {
  background: rgba(229, 165, 61, 0.15);
  color: var(--warning);
  border: 1px solid rgba(229, 165, 61, 0.25);
}

.badge-muted {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.timeline-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.timeline-text {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ===== Notice Section ===== */
.notice-section {
  padding: 96px 0;
  background: var(--bg);
}

.notice-wrap {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: start;
}

.notice-list {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.notice-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  transition: background 0.3s ease;
}

.notice-row:last-child {
  border-bottom: none;
}

.notice-row:hover {
  background: rgba(255, 255, 255, 0.03);
}

.notice-badge {
  flex-shrink: 0;
  min-width: 40px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.badge-new {
  background: var(--primary);
  color: #0C0F0E;
}

.badge-hot {
  background: var(--purple);
  color: #0C0F0E;
}

.badge-update {
  background: rgba(229, 165, 61, 0.2);
  color: var(--warning);
  border: 1px solid rgba(229, 165, 61, 0.3);
}

.badge-done {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.notice-title {
  flex: 1;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.3s ease;
}

.notice-row:hover .notice-title {
  color: var(--primary);
}

.notice-date {
  flex-shrink: 0;
  font-family: var(--font-num);
  font-size: 0.8125rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

.notice-aside {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.notice-aside .cover-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  position: relative;
}

.notice-aside img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.notice-aside .cover-card:hover img {
  transform: scale(1.03);
}

.notice-aside .cover-card .cover-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(12, 15, 14, 0.85) 100%);
  display: flex;
  align-items: flex-end;
  padding: 20px 24px;
}

.notice-aside .cover-card .cover-overlay span {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
}

.verify-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 8px;
  background: rgba(61, 214, 140, 0.1);
  border: 1px solid rgba(61, 214, 140, 0.2);
  color: var(--success);
  font-size: 0.8125rem;
  font-weight: 600;
}

.verify-tag svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ===== Stats Section ===== */
.stats-section {
  padding: 96px 0;
  position: relative;
  background: linear-gradient(180deg, rgba(12, 15, 14, 0.92) 0%, rgba(12, 15, 14, 0.96) 100%);
  overflow: hidden;
}

.stats-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  z-index: 0;
}

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

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

.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.stat-number {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  color: var(--primary);
  line-height: 1.1;
  margin-bottom: 8px;
}

.stat-label {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.stat-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== FAQ Section ===== */
.faq-section {
  padding: 96px 0;
  background: radial-gradient(ellipse at 80% 20%, rgba(139, 124, 255, 0.05) 0%, transparent 50%);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 24px;
}

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

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 20px 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: color 0.3s ease;
}

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

.faq-icon {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--text-secondary);
  border-radius: 2px;
  transition: background 0.3s ease, transform 0.3s ease;
}

.faq-icon::before {
  width: 14px;
  height: 2px;
}

.faq-icon::after {
  width: 2px;
  height: 14px;
}

.faq-question:hover .faq-icon::before,
.faq-question:hover .faq-icon::after {
  background: var(--primary);
}

.faq-item.open .faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer p {
  padding: 0 0 20px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

/* ===== CTA Light ===== */
.cta-light {
  padding: 80px 0;
  position: relative;
}

.cta-light::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/coverpic/cover-3.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
  z-index: 0;
}

.cta-inner {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 64px 48px;
}

.cta-title {
  font-size: clamp(1.75rem, 3vw, 2.375rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.cta-sub {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}

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

.cta-note {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ===== Reveal Animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Footer ===== */
.footer {
  padding: 80px 0 32px;
  border-top: 1px solid var(--border);
  background: #080A09;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 320px;
}

.footer-links h4 {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  padding: 6px 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color 0.3s ease, padding-left 0.3s ease;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-muted);
  transition: color 0.3s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .header-inner {
    gap: 16px;
  }

  .nav-link {
    padding: 8px 12px;
    font-size: 0.875rem;
  }

  .search-box {
    width: 150px;
  }

  .search-box:focus-within {
    width: 190px;
  }

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

  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .stat-card {
    padding: 28px 20px;
  }
}

@media (max-width: 767px) {
  :root {
    --header-h: 60px;
  }

  .header-inner {
    padding: 0 16px;
  }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: rgba(12, 15, 14, 0.98);
    padding: 16px;
    border-bottom: 1px solid var(--border);
  }

  .nav.open {
    display: flex;
  }

  .nav-link {
    padding: 14px 16px;
    font-size: 1rem;
    border-radius: 8px;
  }

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

  .nav-link:hover {
    background: rgba(255, 255, 255, 0.04);
  }

  .header-actions {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 0 16px 16px;
    background: rgba(12, 15, 14, 0.98);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .header-actions.open {
    display: flex;
  }

  .search-box {
    width: 100%;
  }

  .search-box:focus-within {
    width: 100%;
  }

  .search-box input {
    height: 44px;
  }

  .header-cta {
    height: 46px;
    width: 100%;
  }

  .btn-login {
    text-align: center;
    padding: 10px 0;
  }

  .burger {
    display: flex;
    margin-left: auto;
  }

  .page-hero {
    padding: 80px 0 60px;
    text-align: center;
  }

  .page-hero h1 {
    font-size: clamp(2rem, 8vw, 2.75rem);
  }

  .page-hero-sub {
    font-size: 0.9375rem;
    margin-left: auto;
    margin-right: auto;
  }

  .page-hero-actions {
    justify-content: center;
  }

  .section {
    padding: 64px 0;
  }

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

  .timeline-item {
    flex-direction: column;
    gap: 16px;
    padding-bottom: 40px;
  }

  .timeline-marker {
    flex-direction: row;
    gap: 16px;
    width: 100%;
    align-items: center;
  }

  .timeline-version {
    margin-top: 0;
  }

  .timeline-item::before {
    left: 14px;
    top: 36px;
    bottom: -20px;
  }

  .timeline-dot {
    width: 28px;
    height: 28px;
  }

  .timeline-card {
    margin-left: 44px;
    width: calc(100% - 44px);
    padding: 20px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  .notice-row {
    padding: 16px;
    gap: 12px;
    flex-wrap: wrap;
  }

  .notice-title {
    order: 2;
    flex-basis: calc(100% - 60px);
    white-space: normal;
  }

  .notice-date {
    order: 3;
    margin-left: 52px;
  }

  .cta-light {
    padding: 64px 0;
  }

  .cta-inner {
    padding: 40px 24px;
    border-radius: 16px;
  }

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

  .footer-brand p {
    margin: 0 auto;
  }

  .footer-links h4 {
    margin-bottom: 12px;
  }

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

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

  .logo-text {
    font-size: 0.9375rem;
  }

  .logo-sub {
    font-size: 0.625rem;
  }

  .timeline-card {
    margin-left: 0;
    width: 100%;
  }

  .timeline-item::before {
    display: none;
  }

  .timeline-marker {
    margin-bottom: 4px;
  }

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

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

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