/* roulang page: index */
:root {
      --color-primary: #F7931E;
      --color-primary-hover: #E0790F;
      --color-secondary: #3E2C1B;
      --color-bg: #FFFBF2;
      --color-text: #1E150A;
      --color-muted: #6B5E53;
      --color-white: #FFFFFF;
      --color-card-bg: #FFFFFF;
      --color-border-light: rgba(247,147,30,0.15);
      --color-shadow-card: 0 4px 20px rgba(247,147,30,0.08);
      --color-shadow-card-hover: 0 12px 32px rgba(62,44,27,0.15);
      --color-shadow-button: 0 4px 14px rgba(247,147,30,0.3);
      --radius-card: 16px;
      --radius-button: 30px;
      --radius-input: 8px;
      --radius-nav: 60px;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
      --max-width: 1200px;
      --transition-fast: 0.25s ease;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

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

    a {
      text-decoration: none;
      color: inherit;
      transition: color var(--transition-fast);
    }

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

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

    h1, h2, h3, h4, h5, h6 {
      font-weight: 800;
      line-height: 1.25;
      color: var(--color-text);
      margin-bottom: 0.5rem;
    }

    h1 {
      font-size: 3.8rem;
      letter-spacing: -0.02em;
    }

    h2 {
      font-size: 2.2rem;
      letter-spacing: -0.01em;
    }

    h3 {
      font-size: 1.5rem;
      font-weight: 700;
    }

    p {
      margin-bottom: 1rem;
    }

    .text-muted {
      color: var(--color-muted);
      font-weight: 300;
    }

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

    .section {
      padding: 80px 0;
      position: relative;
    }

    .section-title {
      text-align: center;
      margin-bottom: 48px;
      position: relative;
    }

    .section-title h2 {
      display: inline-block;
      position: relative;
    }

    .section-title h2::after {
      content: '';
      position: absolute;
      bottom: -12px;
      left: 50%;
      transform: translateX(-50%);
      width: 60px;
      height: 3px;
      background: var(--color-primary);
      border-radius: 3px;
    }

    /* 覆盖 Foundation 按钮 */
    .button {
      font-family: var(--font-sans);
      font-weight: 700;
      border-radius: var(--radius-button);
      padding: 14px 32px;
      transition: all var(--transition-fast);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      cursor: pointer;
      border: 2px solid transparent;
      text-decoration: none;
      line-height: 1.2;
      font-size: 1rem;
      letter-spacing: 0.01em;
    }

    .button:hover {
      transform: translateY(-2px);
    }

    .button-primary {
      background-color: var(--color-primary);
      color: var(--color-white);
      border-color: var(--color-primary);
      box-shadow: var(--color-shadow-button);
    }

    .button-primary:hover {
      background-color: var(--color-primary-hover);
      border-color: var(--color-primary-hover);
      color: var(--color-white);
      box-shadow: 0 8px 24px rgba(247,147,30,0.4);
    }

    .button-outline {
      background: transparent;
      color: var(--color-white);
      border-color: var(--color-white);
    }

    .button-outline:hover {
      background: var(--color-white);
      color: var(--color-primary);
      border-color: var(--color-white);
    }

    .button-outline-dark {
      background: transparent;
      color: var(--color-primary);
      border-color: var(--color-primary);
    }

    .button-outline-dark:hover {
      background: var(--color-primary);
      color: var(--color-white);
    }

    .button-white-primary {
      background: var(--color-white);
      color: var(--color-primary);
      border-color: var(--color-white);
      font-weight: 700;
    }

    .button-white-primary:hover {
      background: #ffe0b8;
      border-color: #ffe0b8;
      color: var(--color-primary-hover);
    }

    /* 浮动导航 Dock */
    .nav-dock {
      position: fixed;
      top: 24px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 1000;
      width: calc(100% - 48px);
      max-width: 1100px;
      background: rgba(255, 251, 242, 0.88);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border: 1px solid var(--color-border-light);
      border-radius: var(--radius-nav);
      padding: 12px 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .nav-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--color-primary);
      white-space: nowrap;
    }

    .nav-logo .logo-icon {
      width: 36px;
      height: 36px;
      background: var(--color-primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.1rem;
      flex-shrink: 0;
    }

    .nav-links {
      display: flex;
      gap: 28px;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .nav-links li {
      margin: 0;
    }

    .nav-links a {
      color: var(--color-text);
      font-weight: 500;
      font-size: 0.95rem;
      position: relative;
      padding: 4px 0;
      white-space: nowrap;
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%) scaleX(0);
      width: 100%;
      height: 2px;
      background: var(--color-primary);
      border-radius: 2px;
      transition: transform var(--transition-fast);
      transform-origin: center;
    }

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

    .nav-links a:hover::after {
      transform: translateX(-50%) scaleX(1);
    }

    .nav-cta .button {
      padding: 10px 22px;
      font-size: 0.9rem;
      white-space: nowrap;
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--color-text);
      cursor: pointer;
      padding: 4px;
    }

    /* Hero */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      position: relative;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      background-attachment: fixed;
    }

    .hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(62,44,27,0.72) 0%, rgba(62,44,27,0.4) 50%, rgba(247,147,30,0.18) 100%);
      z-index: 1;
    }

    .hero .container {
      position: relative;
      z-index: 2;
      padding-top: 100px;
      padding-bottom: 60px;
    }

    .hero-content {
      max-width: 680px;
    }

    .hero h1 {
      color: var(--color-white);
      text-shadow: 0 2px 12px rgba(0,0,0,0.25);
      margin-bottom: 20px;
    }

    .hero .hero-subtitle {
      color: rgba(255,255,255,0.9);
      font-size: 1.15rem;
      line-height: 1.8;
      margin-bottom: 36px;
      max-width: 560px;
    }

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

    .scroll-indicator {
      position: absolute;
      bottom: 36px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 3;
      animation: bounce 2s ease-in-out infinite;
      color: rgba(255,255,255,0.75);
      font-size: 1.6rem;
      cursor: pointer;
    }

    @keyframes bounce {
      0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
      40% { transform: translateX(-50%) translateY(-14px); }
      60% { transform: translateX(-50%) translateY(-6px); }
    }

    /* 痛点区 */
    #pains {
      background: var(--color-bg);
      position: relative;
    }

    #pains .pain-image-wrapper {
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--color-shadow-card);
    }

    #pains .pain-image-wrapper img {
      width: 100%;
      height: auto;
      object-fit: cover;
    }

    .pain-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      margin-bottom: 20px;
      padding: 16px 20px;
      background: var(--color-card-bg);
      border-radius: var(--radius-card);
      box-shadow: 0 2px 10px rgba(247,147,30,0.04);
      transition: all var(--transition-fast);
      border-left: 4px solid transparent;
    }

    .pain-item:hover {
      border-left-color: var(--color-primary);
      box-shadow: var(--color-shadow-card-hover);
      transform: translateX(4px);
    }

    .pain-icon {
      color: var(--color-primary);
      font-size: 1.5rem;
      flex-shrink: 0;
      margin-top: 2px;
    }

    .pain-item h4 {
      color: var(--color-text);
      font-weight: 700;
      margin-bottom: 4px;
      font-size: 1.05rem;
    }

    .pain-item p {
      color: var(--color-muted);
      margin-bottom: 0;
      font-size: 0.95rem;
      line-height: 1.6;
    }

    /* 解决方案区 */
    #solutions {
      background: #FFF8ED;
      position: relative;
      overflow: hidden;
    }

    .solution-row {
      display: flex;
      align-items: center;
      gap: 48px;
      margin-bottom: 60px;
      position: relative;
    }

    .solution-row:last-child {
      margin-bottom: 0;
    }

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

    .solution-number {
      font-size: 7rem;
      font-weight: 800;
      color: rgba(247,147,30,0.15);
      line-height: 1;
      flex-shrink: 0;
      min-width: 140px;
      transition: all 0.4s ease;
      user-select: none;
    }

    .solution-row:hover .solution-number {
      color: var(--color-primary);
      transform: scale(1.08);
    }

    .solution-image {
      flex-shrink: 0;
      width: 260px;
      height: 180px;
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--color-shadow-card);
      transition: all var(--transition-fast);
    }

    .solution-row:hover .solution-image {
      box-shadow: var(--color-shadow-card-hover);
      transform: translateY(-4px);
    }

    .solution-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .solution-text {
      flex: 1;
    }

    .solution-text h3 {
      color: var(--color-text);
      margin-bottom: 10px;
    }

    .solution-text p {
      color: var(--color-muted);
      margin-bottom: 12px;
      line-height: 1.7;
    }

    .solution-text .learn-more {
      color: var(--color-primary);
      font-weight: 700;
      font-size: 0.95rem;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: gap var(--transition-fast);
      cursor: pointer;
    }

    .solution-text .learn-more:hover {
      gap: 12px;
      color: var(--color-primary-hover);
    }

    .solution-divider {
      width: 100%;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(247,147,30,0.2), transparent);
      margin: 48px 0;
    }

    /* 成果数据区 */
    #results {
      background: var(--color-bg);
    }

    .results-scroll {
      display: flex;
      gap: 20px;
      overflow-x: auto;
      padding: 16px 0 24px;
      scroll-snap-type: x proximity;
      -webkit-overflow-scrolling: touch;
      cursor: grab;
      scrollbar-width: none;
    }

    .results-scroll::-webkit-scrollbar {
      display: none;
    }

    .result-card {
      flex: 0 0 calc(25% - 15px);
      min-width: 220px;
      background: linear-gradient(135deg, var(--color-primary) 0%, #FFB347 100%);
      border-radius: var(--radius-card);
      padding: 28px 22px;
      color: var(--color-white);
      text-align: center;
      scroll-snap-align: start;
      transition: all var(--transition-fast);
      box-shadow: 0 6px 24px rgba(247,147,30,0.25);
      cursor: default;
    }

    .result-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 14px 36px rgba(247,147,30,0.35);
    }

    .result-card .counter {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1;
      margin-bottom: 8px;
      letter-spacing: -0.02em;
    }

    .result-card .counter-unit {
      font-size: 1.2rem;
      font-weight: 600;
    }

    .result-card .counter-label {
      font-size: 0.9rem;
      opacity: 0.9;
      font-weight: 400;
      margin-top: 4px;
    }

    /* 证言区 */
    #testimonials {
      background: var(--color-secondary);
      color: var(--color-white);
      position: relative;
    }

    #testimonials .section-title h2 {
      color: var(--color-white);
    }

    #testimonials .section-title h2::after {
      background: var(--color-primary);
    }

    .testimonial-card {
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.12);
      border-radius: var(--radius-card);
      padding: 40px 36px;
      max-width: 720px;
      margin: 0 auto;
      text-align: center;
      position: relative;
      backdrop-filter: blur(4px);
    }

    .testimonial-card .quote-icon {
      font-size: 3rem;
      color: var(--color-primary);
      opacity: 0.6;
      margin-bottom: 16px;
    }

    .testimonial-card blockquote {
      font-size: 1.15rem;
      line-height: 1.8;
      color: rgba(255,255,255,0.9);
      margin-bottom: 20px;
      border: none;
      padding: 0;
      font-style: normal;
    }

    .testimonial-card .client-name {
      font-weight: 700;
      color: var(--color-primary);
      font-size: 1rem;
      margin-bottom: 4px;
    }

    .testimonial-card .client-company {
      font-size: 0.9rem;
      color: rgba(255,255,255,0.6);
    }

    .testimonial-nav {
      display: flex;
      justify-content: center;
      gap: 12px;
      margin-top: 24px;
    }

    .testimonial-dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: rgba(255,255,255,0.3);
      border: none;
      cursor: pointer;
      transition: all var(--transition-fast);
      padding: 0;
    }

    .testimonial-dot.active {
      background: var(--color-primary);
      transform: scale(1.3);
      box-shadow: 0 0 12px rgba(247,147,30,0.5);
    }

    .testimonial-slide {
      display: none;
    }

    .testimonial-slide.active {
      display: block;
      animation: fadeInUp 0.4s ease;
    }

    @keyframes fadeInUp {
      from { opacity: 0; transform: translateY(16px); }
      to { opacity: 1; transform: translateY(0); }
    }

    /* CTA 联系区 */
    #contact {
      background: linear-gradient(135deg, var(--color-primary) 0%, #E0790F 40%, var(--color-secondary) 100%);
      color: var(--color-white);
      position: relative;
      overflow: hidden;
    }

    #contact::before {
      content: '';
      position: absolute;
      top: -60px;
      right: -60px;
      width: 300px;
      height: 300px;
      background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    #contact .section-title h2 {
      color: var(--color-white);
    }

    #contact .section-title h2::after {
      background: var(--color-white);
    }

    .contact-form-wrapper {
      max-width: 560px;
      margin: 0 auto;
      background: rgba(255,255,255,0.08);
      border-radius: var(--radius-card);
      padding: 40px 36px;
      border: 1px solid rgba(255,255,255,0.2);
      backdrop-filter: blur(8px);
    }

    .contact-form-wrapper input,
    .contact-form-wrapper select,
    .contact-form-wrapper textarea {
      background: transparent;
      border: 2px solid rgba(255,255,255,0.4);
      border-radius: var(--radius-input);
      color: var(--color-white);
      padding: 12px 16px;
      font-size: 1rem;
      width: 100%;
      margin-bottom: 16px;
      transition: all var(--transition-fast);
      outline: none;
      font-family: var(--font-sans);
    }

    .contact-form-wrapper input::placeholder,
    .contact-form-wrapper textarea::placeholder {
      color: rgba(255,255,255,0.55);
    }

    .contact-form-wrapper input:focus,
    .contact-form-wrapper select:focus,
    .contact-form-wrapper textarea:focus {
      border-color: var(--color-white);
      background: rgba(255,255,255,0.1);
      box-shadow: 0 0 0 4px rgba(255,255,255,0.12);
    }

    .contact-form-wrapper select {
      appearance: none;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='white' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 16px center;
      cursor: pointer;
    }

    .contact-form-wrapper select option {
      color: var(--color-text);
      background: #fff;
    }

    .contact-form-wrapper .button {
      width: 100%;
      margin-top: 8px;
    }

    .contact-note {
      text-align: center;
      margin-top: 16px;
      font-size: 0.85rem;
      color: rgba(255,255,255,0.7);
    }

    /* FAQ */
    #faq {
      background: var(--color-bg);
    }

    .accordion {
      max-width: 800px;
      margin: 0 auto;
    }

    .accordion-item {
      border: none;
      border-bottom: 1px dashed var(--color-primary);
      background: transparent;
      margin-bottom: 0;
      border-radius: 0;
    }

    .accordion-item:last-child {
      border-bottom: 1px dashed var(--color-primary);
    }

    .accordion-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--color-secondary);
      background: transparent;
      padding: 18px 12px 18px 40px;
      border: none;
      position: relative;
      cursor: pointer;
      transition: color var(--transition-fast);
      line-height: 1.5;
    }

    .accordion-title::before {
      content: '\f185';
      font-family: 'Font Awesome 6 Free';
      font-weight: 900;
      position: absolute;
      left: 4px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--color-primary);
      font-size: 1rem;
      transition: transform 0.3s ease;
    }

    .accordion-item.is-active .accordion-title::before {
      transform: translateY(-50%) rotate(45deg);
      color: var(--color-primary-hover);
    }

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

    .accordion-content {
      background: #FFF8ED;
      border: none;
      padding: 0 40px 20px;
      color: var(--color-muted);
      line-height: 1.7;
      border-radius: 0 0 8px 8px;
    }

    /* 页脚 */
    .site-footer {
      background: var(--color-secondary);
      color: rgba(255,251,242,0.85);
      padding: 56px 0 28px;
    }

    .site-footer a {
      color: rgba(255,251,242,0.75);
      transition: color var(--transition-fast);
    }

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

    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--color-primary);
      margin-bottom: 12px;
    }

    .footer-logo .logo-icon {
      width: 32px;
      height: 32px;
      background: var(--color-primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 0.9rem;
    }

    .footer-desc {
      font-size: 0.9rem;
      line-height: 1.6;
      color: rgba(255,251,242,0.6);
      margin-bottom: 8px;
    }

    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .footer-links li {
      margin-bottom: 8px;
    }

    .footer-links a {
      font-size: 0.95rem;
    }

    .footer-social {
      display: flex;
      gap: 14px;
      font-size: 1.4rem;
    }

    .footer-social a {
      color: rgba(255,251,242,0.55);
      transition: all var(--transition-fast);
    }

    .footer-social a:hover {
      color: var(--color-primary);
      transform: translateY(-2px);
    }

    .footer-bottom {
      margin-top: 40px;
      padding-top: 20px;
      border-top: 1px solid rgba(255,251,242,0.12);
      text-align: center;
      font-size: 0.85rem;
      color: rgba(255,251,242,0.5);
    }

    /* 响应式 */
    @media (max-width: 1024px) {
      h1 { font-size: 2.8rem; }
      h2 { font-size: 1.8rem; }
      .result-card { flex: 0 0 calc(33.33% - 14px); min-width: 180px; }
      .solution-row { gap: 28px; }
      .solution-number { font-size: 5rem; min-width: 100px; }
      .solution-image { width: 200px; height: 150px; }
    }

    @media (max-width: 768px) {
      h1 { font-size: 2.2rem; }
      h2 { font-size: 1.6rem; }
      h3 { font-size: 1.25rem; }
      .section { padding: 56px 0; }

      .nav-dock {
        top: 0;
        left: 0;
        transform: none;
        width: 100%;
        max-width: 100%;
        border-radius: 0 0 20px 20px;
        padding: 10px 18px;
        flex-wrap: wrap;
        gap: 8px;
      }

      .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 8px;
        padding: 12px 0 4px;
        order: 3;
      }

      .nav-links.open {
        display: flex;
      }

      .nav-cta {
        order: 2;
      }

      .mobile-menu-toggle {
        display: block;
        order: 1;
      }

      .nav-logo {
        order: 0;
        flex: 1;
      }

      .hero {
        background-attachment: scroll;
        min-height: 90vh;
      }

      .hero-content {
        text-align: center;
        max-width: 100%;
      }

      .hero .hero-subtitle {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
      }

      .hero-buttons {
        justify-content: center;
      }

      .solution-row,
      .solution-row.reverse {
        flex-direction: column;
        text-align: center;
        gap: 20px;
      }

      .solution-number {
        font-size: 4rem;
        min-width: auto;
      }

      .solution-image {
        width: 100%;
        max-width: 320px;
        height: 200px;
        margin: 0 auto;
      }

      .result-card {
        flex: 0 0 calc(50% - 10px);
        min-width: 150px;
      }

      .result-card .counter {
        font-size: 2.2rem;
      }

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

      .contact-form-wrapper {
        padding: 28px 20px;
      }

      .footer .grid-x {
        text-align: center;
      }

      .footer-logo {
        justify-content: center;
      }

      .footer-social {
        justify-content: center;
      }
    }

    @media (max-width: 520px) {
      h1 { font-size: 1.8rem; }
      h2 { font-size: 1.4rem; }
      .container { padding: 0 16px; }
      .section { padding: 40px 0; }
      .hero { min-height: 85vh; }
      .hero-buttons { flex-direction: column; align-items: center; }
      .hero-buttons .button { width: 100%; max-width: 260px; }
      .result-card { flex: 0 0 75%; min-width: 180px; }
      .pain-item { flex-direction: column; gap: 8px; }
      .section-title { margin-bottom: 32px; }
      .accordion-title { font-size: 0.95rem; padding: 14px 8px 14px 32px; }
    }