/* roulang page: index */
:root {
      --primary: #D41E24;
      --primary-glow: #E6392A;
      --accent: #F0B90B;
      --accent-dark: #C8960C;
      --bg-deep: #0A0C10;
      --bg-panel: #161B22;
      --bg-footer: #080A0E;
      --text-white: #F5F0E8;
      --text-gray: #B0B8C1;
      --text-muted: #8A929E;
      --border-gold: rgba(200, 150, 12, 0.2);
      --border-gold-hover: rgba(240, 185, 11, 0.5);
      --shadow-card: 0 8px 32px rgba(0,0,0,0.5);
      --shadow-gold: 0 0 20px rgba(240,185,11,0.25);
      --radius-card: 16px;
      --radius-btn: 12px;
      --radius-input: 8px;
      --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1.2);
      --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --font-data: "Inter", "Rajdhani", "Orbitron", sans-serif;
      --sidebar-width: 220px;
      --content-max: 1200px;
      --section-gap: 120px;
    }

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

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-deep);
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-deep);
      color: var(--text-gray);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      display: flex;
      min-height: 100vh;
      overflow-x: hidden;
    }

    /* 左侧固定导航栏 (桌面端) */
    .sidebar {
      position: fixed;
      left: 0;
      top: 0;
      height: 100vh;
      width: var(--sidebar-width);
      background: rgba(10, 12, 16, 0.92);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-right: 1px solid rgba(200, 150, 12, 0.1);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      z-index: 1000;
      padding: 40px 0 40px 0;
      transition: transform 0.3s ease;
    }

    .logo-area {
      padding: 0 28px 40px 28px;
      border-bottom: 1px solid rgba(200,150,12,0.15);
      margin-bottom: 24px;
    }

    .logo-text {
      font-size: 26px;
      font-weight: 800;
      letter-spacing: 1px;
      color: var(--text-white);
      line-height: 1.2;
      background: linear-gradient(135deg, #E6392A, #F0B90B);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin-bottom: 6px;
    }

    .logo-domain {
      font-size: 12px;
      color: var(--text-muted);
      letter-spacing: 0.5px;
      display: block;
    }

    .nav-menu {
      list-style: none;
      flex: 1;
      padding: 0 20px;
    }

    .nav-item {
      margin-bottom: 4px;
    }

    .nav-link {
      display: flex;
      align-items: center;
      height: 48px;
      padding: 0 12px;
      color: var(--text-gray);
      text-decoration: none;
      font-size: 16px;
      font-weight: 500;
      border-radius: 8px;
      transition: var(--transition-smooth);
      position: relative;
      letter-spacing: 0.3px;
    }

    .nav-link:hover {
      color: var(--accent);
      background: rgba(240,185,11,0.05);
      transform: translateX(4px);
    }

    .nav-link::before {
      content: '';
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 3px;
      height: 0%;
      background: var(--accent);
      border-radius: 4px;
      transition: height 0.25s ease;
    }

    .nav-link:hover::before,
    .nav-link.active::before {
      height: 60%;
    }

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

    .sidebar-footer {
      padding: 20px 28px 0 28px;
      border-top: 1px solid rgba(200,150,12,0.1);
      margin-top: 20px;
    }

    .btn-sidebar-cta {
      display: block;
      width: 100%;
      background: var(--primary);
      color: white;
      text-align: center;
      padding: 12px 16px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      text-decoration: none;
      letter-spacing: 0.8px;
      transition: var(--transition-smooth);
      box-shadow: 0 4px 12px rgba(212,30,36,0.4);
    }

    .btn-sidebar-cta:hover {
      background: var(--primary-glow);
      box-shadow: 0 0 18px rgba(212,30,36,0.7);
      color: white;
    }

    /* 主内容区 */
    .main-content {
      margin-left: var(--sidebar-width);
      width: calc(100% - var(--sidebar-width));
      max-width: 100%;
      background: var(--bg-deep);
      position: relative;
    }

    .container {
      max-width: 980px;
      margin: 0 auto;
      padding: 0 40px;
    }

    section {
      padding: var(--section-gap) 0;
    }

    /* 移动端顶部导航 */
    .mobile-header {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 56px;
      background: rgba(10,12,16,0.94);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(200,150,12,0.15);
      z-index: 999;
      align-items: center;
      padding: 0 20px;
      justify-content: space-between;
    }

    .mobile-logo {
      font-size: 20px;
      font-weight: 800;
      background: linear-gradient(135deg, #E6392A, #F0B90B);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hamburger {
      display: flex;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      background: transparent;
      border: none;
      padding: 8px;
      z-index: 1001;
    }

    .hamburger span {
      width: 24px;
      height: 2px;
      background: var(--text-white);
      transition: 0.3s;
      display: block;
    }

    .mobile-drawer {
      position: fixed;
      top: 0;
      left: 0;
      width: 280px;
      height: 100vh;
      background: rgba(10,12,16,0.96);
      backdrop-filter: blur(24px);
      -webkit-backdrop-filter: blur(24px);
      border-right: 1px solid var(--border-gold);
      z-index: 1002;
      transform: translateX(-100%);
      transition: transform 0.35s ease;
      padding: 30px 24px;
      display: flex;
      flex-direction: column;
    }

    .mobile-drawer.open {
      transform: translateX(0);
    }

    .drawer-nav {
      list-style: none;
      margin-top: 40px;
    }

    .drawer-nav .nav-link {
      color: var(--text-gray);
      padding: 14px 8px;
      font-size: 18px;
      border-bottom: 1px solid rgba(255,255,255,0.05);
    }

    /* 通用板块标题 */
    .section-title {
      font-size: 36px;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 16px;
      letter-spacing: -0.3px;
      line-height: 1.3;
    }

    .section-subtitle {
      color: var(--text-muted);
      font-size: 18px;
      margin-bottom: 48px;
    }

    .gold-text {
      color: var(--accent);
    }

    /* 按钮 */
    .btn-primary {
      background: var(--primary);
      color: white;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      text-decoration: none;
      display: inline-block;
      transition: var(--transition-smooth);
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(212,30,36,0.5);
      letter-spacing: 0.5px;
    }

    .btn-primary:hover {
      background: var(--primary-glow);
      box-shadow: 0 0 22px rgba(212,30,36,0.8);
      transform: translateY(-2px);
    }

    .btn-outline {
      background: transparent;
      border: 1px solid var(--accent);
      color: var(--accent);
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: var(--transition-smooth);
      text-decoration: none;
      display: inline-block;
    }

    .btn-outline:hover {
      background: rgba(200,150,12,0.1);
      box-shadow: 0 0 16px rgba(240,185,11,0.25);
    }

    /* Hero */
    .hero {
      height: 100vh;
      display: flex;
      align-items: center;
      position: relative;
      background: radial-gradient(circle at 30% 40%, #1f1210 0%, #0A0C10 80%);
      overflow: hidden;
    }

    .hero-bg {
      position: absolute;
      right: 0;
      top: 0;
      width: 50%;
      height: 100%;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      opacity: 0.25;
      mask-image: linear-gradient(to left, black 20%, transparent);
      -webkit-mask-image: linear-gradient(to left, black 20%, transparent);
    }

    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 620px;
    }

    .hero h1 {
      font-size: 52px;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 24px;
      background: linear-gradient(135deg, #E6392A, #F0B90B);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero p {
      font-size: 20px;
      color: var(--text-gray);
      margin-bottom: 36px;
    }

    /* 卡片网格 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .glass-card {
      background: rgba(22, 27, 34, 0.7);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 1px solid rgba(200,150,12,0.15);
      border-radius: var(--radius-card);
      padding: 32px 24px;
      transition: var(--transition-smooth);
      box-shadow: var(--shadow-card);
    }

    .glass-card:hover {
      transform: translateY(-6px);
      border-color: var(--border-gold-hover);
      box-shadow: 0 12px 36px rgba(0,0,0,0.6), 0 0 20px rgba(240,185,11,0.3);
    }

    .card-img {
      width: 100%;
      height: 140px;
      object-fit: cover;
      border-radius: 12px;
      margin-bottom: 20px;
      background: linear-gradient(145deg, #C8960C, #D41E24);
    }

    /* 猎人图文区 */
    .hunter-row {
      display: flex;
      align-items: center;
      gap: 60px;
      margin-bottom: 80px;
    }

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

    .hunter-img {
      flex: 1;
      border-radius: 20px;
      overflow: hidden;
      box-shadow: 0 0 30px rgba(212,30,36,0.2);
    }

    .hunter-img img {
      width: 100%;
      display: block;
    }

    .progress-bar {
      height: 8px;
      background: #2a2f3a;
      border-radius: 8px;
      margin: 12px 0;
    }

    .progress-fill {
      width: 78%;
      height: 100%;
      background: linear-gradient(90deg, #D41E24, #F0B90B);
      border-radius: 8px;
    }

    .steps {
      display: flex;
      justify-content: space-between;
      position: relative;
    }

    .step-item {
      text-align: center;
      flex:1;
    }

    .faq-item {
      border-bottom: 1px solid rgba(200,150,12,0.1);
    }

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

    @media (max-width: 768px) {
      .sidebar {
        display: none;
      }
      .main-content {
        margin-left: 0;
        width: 100%;
      }
      .mobile-header {
        display: flex;
      }
      .container {
        padding: 0 20px;
      }
      .hero {
        height: auto;
        padding: 120px 0 80px;
      }
      .hero h1 {
        font-size: 34px;
      }
      .grid-3 {
        grid-template-columns: 1fr;
      }
      .hunter-row {
        flex-direction: column;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .section-title {
        font-size: 28px;
      }
      section {
        padding: 80px 0;
      }
    }