/* roulang page: index */
/* ========== 设计变量 ========== */
:root {
  --bg-primary: #0D0D0D;
  --bg-secondary: #1A0F14;
  --bg-card: #231A1F;
  --bg-input: #2A1F26;
  --border-card: rgba(212, 175, 55, 0.15);
  --border-input: #3A2E36;
  --accent-gold: #D4AF37;
  --accent-rose: #C44569;
  --text-light: #E0E0E0;
  --text-body: #B0B0B0;
  --text-muted: #8C8C8C;
  --gradient-main: linear-gradient(135deg, #D4AF37, #C44569);
  --gradient-gold: linear-gradient(135deg, #D4AF37, #F5E6A3);
  --radius-card: 12px;
  --radius-large: 16px;
  --radius-btn: 50px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-en: "Inter", "SF Pro Display", sans-serif;
  --space-section: 100px;
}

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

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

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

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 0;
}

a {
  color: var(--accent-gold);
  text-decoration: none;
  transition: color .3s ease;
}
a:hover { color: #e8c552; text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--accent-gold); outline-offset: 2px; }

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
}

button { cursor: pointer; background: none; }

ul, ol { list-style: none; }

/* ========== 容器 ========== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
}

/* ========== 区块标题 ========== */
.section-head {
  text-align: center;
  margin-bottom: 56px;
}
.section-head .tag {
  display: inline-block;
  padding: 6px 20px;
  border: 1px solid rgba(212,175,55,.4);
  color: var(--accent-gold);
  border-radius: 50px;
  font-size: 14px;
  letter-spacing: 2px;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.section-head h2 {
  font-size: 36px;
  line-height: 1.3;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 16px;
}
.section-head p {
  max-width: 640px;
  margin: 0 auto;
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
}
@media (max-width: 768px) {
  .section-head h2 { font-size: 24px; }
  .section-head { margin-bottom: 40px; }
  .section-head p { font-size: 15px; }
}

/* ========== 按钮 ========== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--gradient-main);
  color: #fff;
  padding: 14px 36px;
  border-radius: 50px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  transition: all .3s ease;
  cursor: pointer;
  line-height: 1.2;
  box-shadow: 0 4px 16px rgba(196, 69, 105, .25);
}
.btn-primary:hover {
  color: #fff;
  text-decoration: none;
  filter: brightness(1.1);
  box-shadow: 0 0 20px rgba(212,175,55,.4);
  transform: translateY(-2px);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--accent-gold);
  color: var(--accent-gold);
  background: transparent;
  padding: 13px 34px;
  border-radius: 50px;
  font-size: 16px;
  font-weight: 600;
  transition: all .3s ease;
  cursor: pointer;
  line-height: 1.2;
}
.btn-secondary:hover {
  background: rgba(212,175,55,.1);
  color: var(--accent-gold);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 0 16px rgba(212,175,55,.2);
}
.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
}

/* ========== 导航 ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(13,13,13,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(212,175,55,.08);
  transition: box-shadow .3s ease;
}
.site-header.scrolled {
  box-shadow: 0 4px 30px rgba(0,0,0,.5);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 4px;
}
.logo .logo-gold {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo:hover { text-decoration: none; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  color: #B0B0B0;
  font-size: 15px;
  font-weight: 500;
  position: relative;
  transition: color .3s;
}
.nav-links a:hover {
  color: var(--accent-gold);
  text-decoration: none;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-main);
  transition: width .3s;
  border-radius: 2px;
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
.nav-links a.active { color: var(--accent-gold); }
.nav-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}
.nav-toggle {
  display: none;
  font-size: 24px;
  color: var(--text-light);
  background: none;
  border: none;
  cursor: pointer;
  line-height: 1;
  padding: 4px;
}
@media (max-width: 992px) {
  .nav-links {
    position: fixed;
    top: 72px;
    right: -100%;
    flex-direction: column;
    background: rgba(20,12,16,.98);
    width: 280px;
    padding: 32px 24px;
    gap: 24px;
    transition: right .4s ease;
    border-bottom-left-radius: 16px;
    height: auto;
    box-shadow: -4px 4px 24px rgba(0,0,0,.4);
    z-index: 999;
  }
  .nav-links.open { right: 0; }
  .nav-links a { font-size: 16px; }
  .nav-toggle { display: block; }
}
@media (max-width: 640px) {
  .logo { font-size: 18px; }
  .nav-inner { height: 64px; }
  .nav-cta .btn-primary { padding: 8px 16px; font-size: 14px; }
}

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  padding: 120px 0 80px;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(rgba(13,13,13,.75), rgba(26,15,20,.85));
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 24px;
  border: 1px solid rgba(212,175,55,.45);
  border-radius: 50px;
  background: rgba(212,175,55,.1);
  color: var(--accent-gold);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 1px;
  margin-bottom: 32px;
}
.hero-tag .pulse {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #e74c3c;
  animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(1.3); }
}
.hero h1 {
  font-size: 48px;
  line-height: 1.25;
  font-weight: 700;
  color: transparent;
  background: linear-gradient(135deg, #D4AF37, #F5E6A3);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
  letter-spacing: 2px;
}
.hero-subtitle {
  font-size: 18px;
  color: #CCCCCC;
  margin-bottom: 36px;
  line-height: 1.6;
}
/* 倒计时 */
.hero-countdown {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.countdown-label {
  font-size: 14px;
  color: var(--text-muted);
  letter-spacing: 2px;
  margin-right: 8px;
}
.countdown-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 78px;
  padding: 14px 18px;
  background: rgba(35,26,31,.85);
  border: 1px solid rgba(212,175,55,.25);
  border-radius: 12px;
  box-shadow: var(--shadow-card);
}
.countdown-item .num {
  font-family: var(--font-en);
  font-size: 32px;
  font-weight: 700;
  color: var(--accent-gold);
  line-height: 1.2;
}
.countdown-item .unit {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
  letter-spacing: 1px;
}
.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-meta {
  margin-top: 40px;
  display: flex;
  gap: 40px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
}
.hero-meta-item strong {
  color: var(--accent-gold);
  font-size: 20px;
  font-weight: 700;
}
@media (max-width: 768px) {
  .hero { min-height: 85vh; padding: 100px 0 60px; }
  .hero h1 { font-size: 32px; line-height: 1.3; }
  .hero-subtitle { font-size: 16px; }
  .countdown-item { min-width: 64px; padding: 10px 14px; }
  .countdown-item .num { font-size: 26px; }
  .hero-btns { flex-direction: column; align-items: center; }
  .hero-btns .btn-primary, .hero-btns .btn-secondary { width: 100%; max-width: 280px; }
}

/* ========== 资讯区 ========== */
.news-section {
  padding: var(--space-section) 0;
  background: var(--bg-primary);
}
.news-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 40px;
}
.news-list-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(212,175,55,.15);
  display: flex;
  align-items: center;
  gap: 8px;
}
.news-list-title span { color: var(--accent-gold); }
.news-list li {
  padding: 20px 0;
  border-bottom: 1px solid rgba(255,255,255,.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: padding-left .3s;
}
.news-list li:hover { padding-left: 8px; }
.news-list a {
  color: var(--text-body);
  font-size: 16px;
  line-height: 1.5;
  flex: 1;
}
.news-list a:hover { color: var(--accent-gold); text-decoration: none; }
.news-list .date {
  font-family: var(--font-en);
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
}
.news-sidebar {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-card);
  padding: 28px;
}
.sidebar-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(212,175,55,.15);
}
.hot-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}
.hot-tag {
  padding: 6px 16px;
  border-radius: 50px;
  background: rgba(212,175,55,.1);
  border: 1px solid rgba(212,175,55,.25);
  color: var(--accent-gold);
  font-size: 13px;
  transition: all .3s;
}
.hot-tag:hover {
  background: var(--accent-gold);
  color: var(--bg-primary);
  text-decoration: none;
  border-color: var(--accent-gold);
}
.sidebar-list li {
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list a {
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.5;
}
.sidebar-list a:hover { color: var(--accent-gold); text-decoration: none; }
.sidebar-list .badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(196,69,105,.2);
  color: var(--accent-rose);
  font-size: 12px;
  margin-left: 6px;
}
@media (max-width: 992px) {
  .news-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .news-section { padding: 60px 0; }
  .news-list li { flex-direction: column; align-items: flex-start; gap: 8px; }
  .news-list .date { font-size: 12px; }
}

/* ========== 指标看板 ========== */
.stats-section {
  padding: var(--space-section) 0;
  background: var(--bg-secondary);
  background-image: radial-gradient(ellipse at 30% 20%, rgba(196,69,105,.1), transparent 50%),
                    radial-gradient(ellipse at 70% 80%, rgba(212,175,55,.1), transparent 50%);
  position: relative;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-card {
  background: rgba(35,26,31,.75);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-card);
  padding: 36px 28px;
  text-align: center;
  transition: all .3s;
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-main);
  opacity: 0;
  transition: opacity .3s;
}
.stat-card:hover::before { opacity: 1; }
.stat-card:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(0,0,0,.4); }
.stat-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(212,175,55,.4);
  border-radius: 50%;
  color: var(--accent-gold);
}
.stat-icon svg { width: 24px; height: 24px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.stat-num {
  font-family: var(--font-en);
  font-size: 42px;
  font-weight: 700;
  color: var(--accent-gold);
  line-height: 1.1;
  margin-bottom: 8px;
}
.stat-label {
  font-size: 14px;
  color: var(--text-muted);
  letter-spacing: 1px;
}
.stat-trend {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: #2ecc71;
  margin-top: 10px;
  background: rgba(46,204,113,.1);
  padding: 3px 10px;
  border-radius: 20px;
}
@media (max-width: 992px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .stats-grid { grid-template-columns: 1fr; }
  .stat-num { font-size: 36px; }
}

/* ========== 服务矩阵 ========== */
.services-section {
  padding: var(--space-section) 0;
  background: var(--bg-primary);
}
.services-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-card);
  padding: 32px;
  position: relative;
  transition: all .4s;
  overflow: hidden;
}
.service-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-main);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s;
}
.service-card:hover::after { transform: scaleX(1); }
.service-card:hover {
  border-color: rgba(212,175,55,.4);
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0,0,0,.5);
}
.service-card.large {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 280px;
}
.service-card .icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: rgba(212,175,55,.1);
  border: 1px solid rgba(212,175,55,.3);
  color: var(--accent-gold);
  margin-bottom: 20px;
}
.service-card .icon svg { width: 26px; height: 26px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.service-card h3 {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 12px;
}
.service-card.large h3 { font-size: 28px; }
.service-card p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
}
.service-card .bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
}
.service-card .post-count {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.service-card .post-count strong {
  color: var(--accent-gold);
  font-size: 18px;
  font-family: var(--font-en);
}
.service-card .link-btn {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-gold);
  background: none;
  border: none;
  cursor: pointer;
  transition: all .3s;
  padding: 6px 0;
}
.service-card .link-btn:hover { text-decoration: underline; color: #e8c552; }
.services-subgrid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
@media (max-width: 992px) {
  .services-grid { grid-template-columns: 1fr; }
  .services-subgrid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .services-subgrid { grid-template-columns: 1fr; }
  .service-card { padding: 24px; }
  .service-card.large { min-height: auto; }
}

/* ========== 结果对比 ========== */
.compare-section {
  padding: var(--space-section) 0;
  background: linear-gradient(135deg, #1A0F14 0%, #0D0D0D 100%);
}
.compare-wrapper {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: center;
}
.compare-col {
  background: rgba(35,26,31,.6);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-large);
  padding: 40px 36px;
}
.compare-col.bad {
  border-color: rgba(196,69,105,.2);
}
.compare-col.good {
  border-color: rgba(212,175,55,.3);
  box-shadow: 0 0 40px rgba(212,175,55,.06);
}
.compare-col h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 28px;
  text-align: center;
}
.compare-col.bad h3 { color: var(--text-muted); }
.compare-col.good h3 { color: var(--accent-gold); }
.compare-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,.04);
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.5;
}
.compare-list li:last-child { border-bottom: none; }
.compare-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
}
.compare-icon.ok {
  background: rgba(212,175,55,.15);
  color: var(--accent-gold);
}
.compare-icon.no {
  background: rgba(196,69,105,.12);
  color: var(--accent-rose);
}
.compare-vs {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.compare-vs .vs-circle {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-en);
  font-size: 22px;
  font-weight: 800;
  box-shadow: 0 8px 30px rgba(196,69,105,.4);
}
.compare-vs .vs-text {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  max-width: 100px;
}
@media (max-width: 992px) {
  .compare-wrapper { grid-template-columns: 1fr; gap: 24px; }
  .compare-vs { flex-direction: row; justify-content: center; }
}
@media (max-width: 768px) {
  .compare-col { padding: 24px 20px; }
  .compare-list li { font-size: 14px; }
}

/* ========== App / 多端 ========== */
.app-section {
  padding: var(--space-section) 0;
  background: var(--bg-primary);
}
.app-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.app-visual {
  position: relative;
  border-radius: var(--radius-large);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0,0,0,.5);
}
.app-visual img { width: 100%; object-fit: cover; }
.app-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 60%, rgba(13,13,13,.6));
}
.app-info .tag {
  display: inline-block;
  padding: 6px 18px;
  border: 1px solid rgba(212,175,55,.4);
  color: var(--accent-gold);
  border-radius: 50px;
  font-size: 13px;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.app-info h2 {
  font-size: 36px;
  font-weight: 600;
  color: var(--text-light);
  line-height: 1.3;
  margin-bottom: 20px;
}
.app-info p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 24px;
}
.app-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 32px;
}
.app-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-body);
}
.app-features li svg {
  width: 18px;
  height: 18px;
  stroke: var(--accent-gold);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
@media (max-width: 992px) {
  .app-wrap { grid-template-columns: 1fr; gap: 40px; }
  .app-info h2 { font-size: 28px; }
}
@media (max-width: 640px) {
  .app-features { grid-template-columns: 1fr; }
  .app-info h2 { font-size: 24px; }
}

/* ========== FAQ ========== */
.faq-section {
  padding: var(--space-section) 0;
  background: var(--bg-secondary);
}
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-card);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color .3s;
}
.faq-item:hover { border-color: rgba(212,175,55,.3); }
.faq-item.open { border-color: rgba(212,175,55,.4); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-light);
  cursor: pointer;
  text-align: left;
  transition: color .3s;
  background: transparent;
  border: none;
}
.faq-question:hover { color: var(--accent-gold); }
.faq-arrow {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold);
  transition: transform .4s;
}
.faq-arrow::after {
  content: '+';
  font-size: 22px;
  font-weight: 300;
  line-height: 1;
}
.faq-item.open .faq-arrow { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .5s ease;
}
.faq-answer-inner {
  padding: 0 28px 24px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
}
.faq-answer-inner p { margin-bottom: 12px; }
.faq-answer-inner p:last-child { margin-bottom: 0; }
@media (max-width: 768px) {
  .faq-question { font-size: 15px; padding: 18px 20px; }
  .faq-answer-inner { padding: 0 20px 20px; font-size: 14px; }
}

/* ========== 转化表单 ========== */
.signup-section {
  padding: var(--space-section) 0;
  background: url('/assets/images/backpic/back-2.jpg') center center / cover no-repeat;
  position: relative;
}
.signup-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,15,20,.92), rgba(13,13,13,.92));
}
.signup-wrap {
  position: relative;
  z-index: 2;
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
}
.signup-wrap h2 {
  font-size: 36px;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 16px;
}
.signup-wrap .sub {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 36px;
  line-height: 1.7;
}
.signup-benefits {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.benefit-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 50px;
  background: rgba(212,175,55,.1);
  border: 1px solid rgba(212,175,55,.25);
  color: var(--accent-gold);
  font-size: 13px;
}
.benefit-tag svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.signup-form {
  background: rgba(35,26,31,.85);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-large);
  padding: 40px;
  backdrop-filter: blur(10px);
  text-align: left;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 14px;
  color: var(--text-body);
  margin-bottom: 8px;
  font-weight: 500;
}
.form-group input {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-input);
  border-radius: 10px;
  color: var(--text-light);
  font-size: 15px;
  transition: all .3s;
}
.form-group input::placeholder { color: #6C6C6C; }
.form-group input:focus {
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px rgba(212,175,55,.1);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: start;
}
.code-btn {
  padding: 14px 20px;
  border: 1px solid var(--accent-gold);
  color: var(--accent-gold);
  border-radius: 10px;
  font-size: 14px;
  background: transparent;
  white-space: nowrap;
  transition: all .3s;
  cursor: pointer;
}
.code-btn:hover { background: rgba(212,175,55,.1); }
.signup-form .btn-primary { width: 100%; padding: 16px; font-size: 17px; margin-top: 12px; }
.form-note {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 16px;
  line-height: 1.5;
}
@media (max-width: 640px) {
  .signup-section { padding: 60px 0; }
  .signup-wrap h2 { font-size: 28px; }
  .signup-form { padding: 24px 20px; }
  .form-row { grid-template-columns: 1fr; }
  .code-btn { width: 100%; }
}

/* ========== 关于 ========== */
.about-section {
  padding: var(--space-section) 0;
  background: var(--bg-primary);
}
.about-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-image {
  border-radius: var(--radius-large);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0,0,0,.5);
  position: relative;
}
.about-image img { width: 100%; object-fit: cover; }
.about-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 65%, rgba(13,13,13,.4));
}
.about-content .tag {
  display: inline-block;
  padding: 6px 18px;
  border: 1px solid rgba(212,175,55,.4);
  color: var(--accent-gold);
  border-radius: 50px;
  font-size: 13px;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.about-content h2 {
  font-size: 36px;
  font-weight: 600;
  color: var(--text-light);
  line-height: 1.3;
  margin-bottom: 20px;
}
.about-content p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.9;
  margin-bottom: 20px;
}
.about-milestones {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 28px;
}
.milestone {
  text-align: center;
  padding: 20px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-card);
}
.milestone .year {
  font-family: var(--font-en);
  font-size: 28px;
  font-weight: 700;
  color: var(--accent-gold);
  line-height: 1.2;
}
.milestone .label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
}
@media (max-width: 992px) {
  .about-wrap { grid-template-columns: 1fr; gap: 40px; }
  .about-content h2 { font-size: 28px; }
}
@media (max-width: 640px) {
  .about-milestones { grid-template-columns: 1fr; }
  .milestone { padding: 16px; }
}

/* ========== 页脚 ========== */
.site-footer {
  background: #0A0A0A;
  padding: 70px 0 30px;
  border-top: 1px solid rgba(212,175,55,.06);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .logo { font-size: 22px; margin-bottom: 16px; }
.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--gradient-main);
  border-radius: 2px;
}
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a {
  color: var(--text-muted);
  font-size: 14px;
  transition: all .3s;
}
.footer-col ul a:hover { color: var(--accent-gold); text-decoration: none; padding-left: 6px; }
.contact-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 14px;
}
.contact-list li svg { width: 16px; height: 16px; stroke: var(--accent-gold); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,.05);
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom-links {
  display: flex;
  gap: 20px;
}
.footer-bottom-links a {
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom-links a:hover { color: var(--accent-gold); text-decoration: none; }
@media (max-width: 992px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}