/* roulang page: index */
:root {
            --color-primary: #FF5E00;
            --color-primary-dark: #E04A00;
            --color-secondary: #7B2FFF;
            --color-accent: #00E5FF;
            --color-bg: #0E0E16;
            --color-bg-deep: #06080C;
            --color-bg-card: rgba(255, 255, 255, 0.04);
            --color-text: #e8e8f0;
            --color-text-weak: #999;
            --color-text-muted: #777;
            --color-border: rgba(255, 94, 0, 0.2);
            --color-border-hover: #FF5E00;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-pill: 50px;
            --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.25);
            --shadow-card-hover: 0 12px 24px rgba(255, 94, 0, 0.15);
            --shadow-glow: 0 0 16px rgba(255, 94, 0, 0.5);
            --shadow-glow-blue: 0 0 20px rgba(0, 229, 255, 0.35);
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Segoe UI', sans-serif;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
            --max-width: 1200px;
            --section-padding: 100px;
            --section-padding-mobile: 60px;
            --nav-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.02em;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            cursor: pointer;
        }

        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== 导航栏 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 15, 26, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 94, 0, 0.3);
            height: var(--nav-height);
            transition: background var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
        }

        .site-header.scrolled {
            background: rgba(8, 11, 20, 0.94);
            border-bottom-color: rgba(255, 94, 0, 0.55);
            box-shadow: 0 2px 20px rgba(255, 94, 0, 0.1);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            z-index: 1001;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            position: relative;
            flex-shrink: 0;
        }

        .logo-icon svg {
            width: 100%;
            height: 100%;
        }

        .logo-text {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.04em;
            white-space: nowrap;
            background: linear-gradient(135deg, #FF5E00, #FF8C42);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            flex-shrink: 0;
        }

        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: #ccc;
            padding: 6px 2px;
            position: relative;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: width var(--transition-normal);
            box-shadow: 0 0 8px rgba(255, 94, 0, 0.6);
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: #fff;
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, #FF5E00, #E04A00);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 9px 20px;
            border-radius: var(--radius-pill);
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 12px rgba(255, 94, 0, 0.3);
            cursor: pointer;
            border: none;
        }

        .nav-cta-btn:hover {
            box-shadow: var(--shadow-glow);
            transform: scale(1.03);
            background: linear-gradient(135deg, #FF6E14, #F0500A);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            z-index: 1001;
            padding: 8px;
            background: none;
            border: none;
            width: 40px;
            height: 32px;
            justify-content: center;
            align-items: center;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #fff;
            border-radius: 3px;
            transition: all var(--transition-normal);
            transform-origin: center;
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(6, 8, 12, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 32px;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-normal);
        }

        .mobile-drawer.open {
            opacity: 1;
            pointer-events: all;
        }

        .mobile-drawer a {
            font-size: 1.3rem;
            font-weight: 600;
            color: #ccc;
            transition: color var(--transition-fast);
        }

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

        .mobile-drawer .nav-cta-btn {
            font-size: 1rem;
            padding: 12px 28px;
        }

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

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 15, 26, 0.75) 0%, rgba(10, 15, 26, 0.35) 40%, rgba(10, 15, 26, 0.65) 75%, rgba(6, 8, 12, 0.9) 100%);
            z-index: 1;
        }

        .hero-glow {
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 94, 0, 0.18) 0%, transparent 70%);
            top: 20%;
            left: 50%;
            transform: translate(-50%, -50%);
            z-index: 0;
            pointer-events: none;
            animation: heroPulse 4s ease-in-out infinite;
        }

        .hero-glow-secondary {
            position: absolute;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(123, 47, 255, 0.14) 0%, transparent 70%);
            bottom: 10%;
            right: 5%;
            z-index: 0;
            pointer-events: none;
            animation: heroPulse 5s ease-in-out infinite 1.5s;
        }

        @keyframes heroPulse {
            0%,
            100% {
                opacity: 0.6;
                transform: translate(-50%, -50%) scale(1);
            }
            50% {
                opacity: 1;
                transform: translate(-50%, -50%) scale(1.2);
            }
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 750px;
            padding: 40px 20px;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(255, 94, 0, 0.15);
            border: 1px solid rgba(255, 94, 0, 0.4);
            color: var(--color-primary);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.06em;
            margin-bottom: 20px;
            animation: fadeInUp 0.8s ease forwards;
        }

        .hero-title {
            font-size: clamp(2.4rem, 5vw, 3.2rem);
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
            animation: fadeInUp 0.8s ease 0.15s forwards;
            opacity: 0;
            text-shadow: 0 0 40px rgba(255, 94, 0, 0.3);
        }

        .hero-title .highlight {
            color: var(--color-primary);
            position: relative;
            display: inline-block;
        }

        .hero-title .highlight::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 0;
            width: 100%;
            height: 6px;
            background: rgba(255, 94, 0, 0.3);
            border-radius: 3px;
            z-index: -1;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: #bbb;
            line-height: 1.6;
            margin-bottom: 32px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
            animation: fadeInUp 0.8s ease 0.3s forwards;
            opacity: 0;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            animation: fadeInUp 0.8s ease 0.45s forwards;
            opacity: 0;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #FF5E00, #E04A00);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 36px;
            border-radius: var(--radius-pill);
            cursor: pointer;
            transition: all var(--transition-fast);
            box-shadow: 0 6px 20px rgba(255, 94, 0, 0.3);
            border: none;
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-glow);
            transform: scale(1.03);
            background: linear-gradient(135deg, #FF6E14, #F0500A);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 2px solid var(--color-accent);
            background: transparent;
            color: var(--color-accent);
            font-weight: 600;
            font-size: 1rem;
            padding: 12px 34px;
            border-radius: var(--radius-pill);
            cursor: pointer;
            transition: all var(--transition-fast);
            box-shadow: 0 0 0 transparent;
        }

        .btn-outline:hover {
            background: rgba(0, 229, 255, 0.08);
            box-shadow: var(--shadow-glow-blue);
            transform: scale(1.03);
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero-scroll-indicator {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            animation: bounceDown 2s ease-in-out infinite;
            cursor: pointer;
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.8rem;
            transition: color var(--transition-fast);
        }

        .hero-scroll-indicator:hover {
            color: var(--color-primary);
        }

        @keyframes bounceDown {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(10px);
            }
        }

        /* ========== 板块通用样式 ========== */
        .section {
            padding: var(--section-padding) 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--color-primary);
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: clamp(1.7rem, 3.5vw, 2.1rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--color-text-weak);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.65;
        }

        /* ========== 痛点区 ========== */
        .pain-section {
            background: var(--color-bg);
            position: relative;
            overflow: hidden;
        }

        .pain-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -120px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 30, 30, 0.06) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

        .pain-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
            z-index: 1;
        }

        .pain-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 80, 60, 0.2);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            text-align: center;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }

        .pain-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 50px;
            height: 3px;
            background: rgba(255, 60, 40, 0.5);
            border-radius: 0 0 4px 4px;
            transition: width var(--transition-normal);
        }

        .pain-card:hover {
            border-color: rgba(255, 80, 60, 0.5);
            background: rgba(255, 255, 255, 0.05);
            transform: translateY(-4px);
            box-shadow: 0 8px 20px rgba(255, 30, 30, 0.1);
        }

        .pain-card:hover::before {
            width: 80px;
            background: rgba(255, 60, 40, 0.8);
        }

        .pain-icon {
            font-size: 2.2rem;
            margin-bottom: 14px;
            color: #e0554a;
            display: block;
        }

        .pain-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: #eee;
            margin-bottom: 8px;
        }

        .pain-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.55;
        }

        /* ========== 解决方案区 ========== */
        .solution-section {
            background: #0a0f1a;
            position: relative;
        }

        .solution-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 94, 0, 0.2), transparent);
        }

        .solution-row-top {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-bottom: 24px;
        }

        .solution-row-bottom {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            max-width: 780px;
            margin: 0 auto;
        }

        .solution-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 94, 0, 0.18);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-normal);
            cursor: default;
            display: flex;
            flex-direction: column;
        }

        .solution-card:hover {
            border-color: var(--color-border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            background: rgba(255, 255, 255, 0.06);
        }

        .solution-card-img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            display: block;
            border-bottom: 1px solid rgba(255, 94, 0, 0.12);
        }

        .solution-card-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .solution-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .solution-card-body p {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.6;
            flex: 1;
        }

        .solution-card-badge {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(0, 229, 255, 0.08);
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            margin-top: 10px;
            align-self: flex-start;
            letter-spacing: 0.04em;
        }

        /* 第二大卡片突出 */
        .solution-row-bottom .solution-card {
            min-height: 220px;
        }

        .solution-row-bottom .solution-card .solution-card-img {
            height: 160px;
        }

        /* ========== 数据成果区 ========== */
        .results-section {
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            background-attachment: fixed;
            position: relative;
            overflow: hidden;
        }

        .results-overlay {
            position: absolute;
            inset: 0;
            background: rgba(6, 8, 12, 0.85);
            z-index: 1;
        }

        .results-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
            z-index: 2;
        }

        .stat-card {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            transition: all var(--transition-normal);
        }

        .stat-card:hover {
            border-color: rgba(255, 94, 0, 0.3);
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1;
            margin-bottom: 8px;
            letter-spacing: 0.02em;
            display: flex;
            align-items: baseline;
            justify-content: center;
            gap: 2px;
        }

        .stat-number .suffix {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--color-accent);
        }

        .stat-label {
            font-size: 0.95rem;
            color: #bbb;
            font-weight: 500;
        }

        /* ========== 证言区 ========== */
        .testimonials-section {
            background: var(--color-bg);
            position: relative;
        }

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

        .testimonial-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            position: relative;
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
        }

        .testimonial-card.featured {
            transform: scale(1.04);
            border-color: rgba(255, 94, 0, 0.25);
            background: rgba(255, 255, 255, 0.06);
            z-index: 1;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
        }

        .testimonial-card:hover {
            border-color: rgba(255, 94, 0, 0.4);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            background: rgba(255, 255, 255, 0.06);
        }

        .testimonial-card.featured:hover {
            transform: scale(1.04) translateY(-4px);
        }

        .testimonial-quote-icon {
            font-size: 3rem;
            color: rgba(255, 94, 0, 0.25);
            position: absolute;
            top: 10px;
            left: 16px;
            line-height: 1;
            pointer-events: none;
            font-family: Georgia, serif;
        }

        .testimonial-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            object-fit: cover;
            margin-bottom: 12px;
            border: 2px solid rgba(255, 94, 0, 0.3);
            flex-shrink: 0;
        }

        .testimonial-text {
            font-size: 0.95rem;
            color: #ccc;
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
            position: relative;
            z-index: 1;
            font-style: italic;
        }

        .testimonial-name {
            font-weight: 700;
            color: #fff;
            font-size: 0.95rem;
        }

        .testimonial-role {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        /* ========== FAQ 区 ========== */
        .faq-section {
            background: #0a0f1a;
            position: relative;
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-normal);
            cursor: pointer;
        }

        .faq-item.active {
            border-color: var(--color-border-hover);
            background: rgba(255, 94, 0, 0.04);
            box-shadow: 0 0 20px rgba(255, 94, 0, 0.06);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-weight: 600;
            color: #eee;
            font-size: 1rem;
            user-select: none;
            gap: 12px;
            transition: color var(--transition-fast);
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 94, 0, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: var(--color-primary);
            transition: all var(--transition-normal);
            font-weight: 700;
        }

        .faq-item.active .faq-icon {
            background: rgba(255, 94, 0, 0.3);
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
            color: #bbb;
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding: 0 22px 18px;
        }

        /* ========== CTA 区 ========== */
        .cta-section {
            background: linear-gradient(180deg, #0a0f1a 0%, #0E0E16 50%, #0a0f1a 100%);
            position: relative;
            text-align: center;
            overflow: hidden;
        }

        .cta-glow {
            position: absolute;
            width: 600px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(ellipse, rgba(255, 94, 0, 0.16) 0%, transparent 70%);
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            pointer-events: none;
            z-index: 1;
            animation: ctaGlow 3s ease-in-out infinite;
        }

        @keyframes ctaGlow {
            0%,
            100% {
                opacity: 0.5;
                transform: translate(-50%, -50%) scale(1);
            }
            50% {
                opacity: 1;
                transform: translate(-50%, -50%) scale(1.3);
            }
        }

        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-title {
            font-size: clamp(1.8rem, 3.5vw, 2.4rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .cta-subtitle {
            font-size: 1.05rem;
            color: #bbb;
            margin-bottom: 30px;
            line-height: 1.6;
        }

        .cta-section .btn-primary {
            font-size: 1.1rem;
            padding: 16px 44px;
            box-shadow: 0 8px 28px rgba(255, 94, 0, 0.35);
            animation: ctaBtnPulse 3s ease-in-out infinite;
        }

        @keyframes ctaBtnPulse {
            0%,
            100% {
                box-shadow: 0 8px 28px rgba(255, 94, 0, 0.35);
            }
            50% {
                box-shadow: 0 8px 40px rgba(255, 94, 0, 0.6);
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--color-bg-deep);
            padding: 50px 0 30px;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
        }

        .footer-logo .logo-text {
            font-size: 1.2rem;
        }

        .footer-desc {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            max-width: 400px;
            margin: 0 auto 20px;
            line-height: 1.6;
        }

        .footer-social {
            display: flex;
            gap: 16px;
            justify-content: center;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #999;
            font-size: 1.1rem;
            transition: all var(--transition-fast);
        }

        .footer-social a:hover {
            background: rgba(255, 94, 0, 0.2);
            color: var(--color-primary);
            box-shadow: 0 0 12px rgba(255, 94, 0, 0.3);
        }

        .footer-links {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

        .footer-links a {
            font-size: 0.85rem;
            color: #888;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--color-accent);
        }

        .footer-copyright {
            font-size: 0.8rem;
            color: #666;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .results-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-card.featured {
                transform: scale(1);
                order: -1;
            }
            .testimonial-card.featured:hover {
                transform: translateY(-4px);
            }
            .solution-row-top {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .solution-row-bottom {
                grid-template-columns: repeat(2, 1fr);
                max-width: 100%;
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-padding: 60px;
            }
            .site-header {
                height: 56px;
            }
            html {
                scroll-padding-top: 56px;
            }
            .nav-links {
                display: none;
            }
            .nav-cta-btn.desktop-only {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-drawer {
                display: flex;
            }
            .hero-section {
                min-height: 70vh;
                background-attachment: scroll;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }
            .btn-primary,
            .btn-outline {
                width: 100%;
                max-width: 280px;
                justify-content: center;
                font-size: 0.95rem;
                padding: 12px 24px;
            }
            .pain-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .solution-row-top {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .solution-row-bottom {
                grid-template-columns: 1fr;
                gap: 14px;
                max-width: 100%;
            }
            .solution-card-img {
                height: 120px;
            }
            .solution-row-bottom .solution-card .solution-card-img {
                height: 130px;
            }
            .results-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .testimonial-card.featured {
                transform: scale(1);
                order: -1;
            }
            .testimonial-card.featured:hover {
                transform: translateY(-3px);
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 15px 16px;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.85rem;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 14px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .cta-title {
                font-size: 1.6rem;
            }
            .results-section {
                background-attachment: scroll;
            }
        }

        @media (max-width: 520px) {
            .results-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .stat-number .suffix {
                font-size: 1.1rem;
            }
            .stat-label {
                font-size: 0.8rem;
            }
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .footer-links {
                gap: 12px;
            }
        }