/* roulang page: index */
:root {
            --color-orange: #F04C00;
            --color-orange-hover: #FF5E1A;
            --color-black: #0B0B0C;
            --color-charcoal: #151518;
            --color-dark-gray: #1A1A1F;
            --color-card-bg: #1E1E24;
            --color-purple: #A700FF;
            --color-gold: #F0C040;
            --color-text: #E0E0E6;
            --color-text-muted: #888;
            --color-text-light: #C0C0C8;
            --color-border: rgba(240, 76, 0, 0.15);
            --color-border-hover: rgba(240, 76, 0, 0.5);
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 8px;
            --shadow-glow-orange: 0 0 20px rgba(240, 76, 0, 0.3);
            --shadow-glow-orange-strong: 0 0 25px rgba(240, 76, 0, 0.6);
            --shadow-glow-purple: 0 0 18px rgba(167, 0, 255, 0.25);
            --max-width: 1280px;
            --section-gap: 80px;
            --section-gap-mobile: 60px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
            --font-cn: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', sans-serif;
            --font-en-num: 'Barlow', 'Oswald', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.6;
            font-weight: 400;
            color: var(--color-text);
            background-color: var(--color-black);
            background-image:
                radial-gradient(ellipse at 30% 15%, rgba(240, 76, 0, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 70% 60%, rgba(167, 0, 255, 0.04) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 85%, rgba(240, 76, 0, 0.03) 0%, transparent 50%);
            background-attachment: fixed;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            font-family: var(--font-cn);
            border: none;
            outline: none;
        }

        input {
            font-family: var(--font-cn);
            outline: none;
        }

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

        /* ========== 导航 ========== */
        .nav-bar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 11, 12, 0.85);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(240, 76, 0, 0.12);
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }

        .nav-bar.scrolled {
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.5);
            background: rgba(11, 11, 12, 0.92);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: #fff;
            letter-spacing: 1px;
            white-space: nowrap;
            transition: text-shadow var(--transition-fast);
            flex-shrink: 0;
        }
        .nav-logo:hover {
            text-shadow: 0 0 18px rgba(240, 76, 0, 0.55);
            color: #fff;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }
        .nav-links a {
            display: block;
            padding: 8px 16px;
            font-size: 15px;
            color: #C0C0C8;
            font-weight: 500;
            border-radius: var(--radius-sm);
            position: relative;
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--color-orange);
            transform: scaleX(0);
            transition: transform var(--transition-smooth);
            border-radius: 2px;
        }
        .nav-links a:hover,
        .nav-links a:focus-visible {
            color: #F04C00;
        }
        .nav-links a:hover::after,
        .nav-links a:focus-visible::after {
            transform: scaleX(1);
        }
        .nav-links a.nav-cta-link {
            background: var(--color-orange);
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 10px 20px;
            font-weight: 600;
            transition: background var(--transition-fast), box-shadow var(--transition-fast);
        }
        .nav-links a.nav-cta-link::after {
            display: none;
        }
        .nav-links a.nav-cta-link:hover {
            background: var(--color-orange-hover);
            box-shadow: var(--shadow-glow-orange-strong);
            color: #fff;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            z-index: 1002;
            position: relative;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #E0E0E6;
            border-radius: 2px;
            transition: all var(--transition-smooth);
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
            background: var(--color-orange);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
            background: var(--color-orange);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 1001;
            background: rgba(11, 11, 12, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-smooth);
        }
        .mobile-menu.active {
            opacity: 1;
            pointer-events: all;
        }
        .mobile-menu::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(167, 0, 255, 0.08) 0%, transparent 70%);
            animation: purpleFlow 4s ease-in-out infinite;
            pointer-events: none;
        }
        @keyframes purpleFlow {
            0%,
            100% {
                opacity: 0.5;
            }
            50% {
                opacity: 1;
            }
        }
        .mobile-menu a {
            font-size: 22px;
            font-weight: 600;
            color: #E0E0E6;
            letter-spacing: 2px;
            transition: color var(--transition-fast), text-shadow var(--transition-fast);
            position: relative;
            z-index: 1;
        }
        .mobile-menu a:hover {
            color: #F04C00;
            text-shadow: 0 0 24px rgba(240, 76, 0, 0.5);
        }
        .mobile-menu .mobile-close {
            position: absolute;
            top: 24px;
            right: 28px;
            background: none;
            border: none;
            font-size: 32px;
            color: #C0C0C8;
            cursor: pointer;
            z-index: 2;
            transition: color var(--transition-fast);
        }
        .mobile-menu .mobile-close:hover {
            color: #F04C00;
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background-color: var(--color-black);
            background-image:
                url('/assets/images/backpic/back-1.webp'),
                linear-gradient(180deg, rgba(11, 11, 12, 0.4) 0%, rgba(11, 11, 12, 0.75) 60%, rgba(11, 11, 12, 0.95) 100%),
                repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(240, 76, 0, 0.03) 2px, rgba(240, 76, 0, 0.03) 4px),
                repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(240, 76, 0, 0.02) 2px, rgba(240, 76, 0, 0.02) 4px);
            background-size: cover, 100% 100%, 40px 40px, 40px 40px;
            background-position: center, center, 0 0, 0 0;
            background-repeat: no-repeat, no-repeat, repeat, repeat;
            background-blend-mode: normal, normal, normal, normal;
            overflow: hidden;
        }

        .hero-particles {
            position: absolute;
            inset: 0;
            pointer-events: none;
            z-index: 1;
        }
        .hero-particle {
            position: absolute;
            width: 3px;
            height: 3px;
            background: var(--color-orange);
            border-radius: 50%;
            animation: floatParticle 6s ease-in-out infinite;
            opacity: 0;
            box-shadow: 0 0 6px rgba(240, 76, 0, 0.7);
        }
        @keyframes floatParticle {
            0% {
                opacity: 0;
                transform: translateY(0) scale(0.5);
            }
            15% {
                opacity: 0.9;
            }
            40% {
                opacity: 0.4;
            }
            70% {
                opacity: 0.8;
            }
            100% {
                opacity: 0;
                transform: translateY(-120px) scale(1.4);
            }
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 120px 24px 80px;
            width: 100%;
        }
        .hero-text-wrap {
            max-width: 680px;
        }
        .hero h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: 1px;
            font-family: var(--font-cn);
            text-shadow: 0 0 40px rgba(240, 76, 0, 0.25);
        }
        .hero h1 .highlight {
            color: var(--color-orange);
            position: relative;
        }
        .hero-subtitle {
            font-size: 18px;
            color: #C0C0C8;
            margin-bottom: 36px;
            line-height: 1.7;
            max-width: 540px;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 16px;
            letter-spacing: 0.5px;
            transition: all var(--transition-smooth);
            cursor: pointer;
            white-space: nowrap;
            text-align: center;
            font-family: var(--font-cn);
        }
        .btn-primary {
            background: var(--color-orange);
            color: #fff;
            border: 2px solid var(--color-orange);
            box-shadow: 0 0 0 rgba(240, 76, 0, 0);
        }
        .btn-primary:hover {
            background: var(--color-orange-hover);
            border-color: var(--color-orange-hover);
            box-shadow: var(--shadow-glow-orange-strong);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-orange);
            border: 2px solid var(--color-orange);
        }
        .btn-outline:hover {
            background: var(--color-orange);
            color: #0B0B0C;
            box-shadow: var(--shadow-glow-orange);
            transform: translateY(-1px);
        }

        .scroll-hint {
            position: absolute;
            bottom: 40px;
            right: 48px;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            animation: bounceArrow 2s ease-in-out infinite;
            cursor: pointer;
            pointer-events: auto;
        }
        .scroll-hint span {
            font-size: 11px;
            color: #888;
            letter-spacing: 2px;
            text-transform: uppercase;
        }
        .scroll-arrow {
            width: 28px;
            height: 28px;
            border-right: 2px solid var(--color-orange);
            border-bottom: 2px solid var(--color-orange);
            transform: rotate(45deg);
            opacity: 0.7;
        }
        @keyframes bounceArrow {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(14px);
            }
        }

        /* ========== 通用板块样式 ========== */
        .section {
            padding: var(--section-gap) 0;
            position: relative;
        }
        .section-dark {
            background-color: var(--color-black);
        }
        .section-charcoal {
            background-color: var(--color-charcoal);
        }
        .section-dark-gray {
            background: linear-gradient(180deg, #1A1A1F 0%, #16161B 100%);
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 40px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 16px;
            font-family: var(--font-cn);
            line-height: 1.3;
        }
        .section-header h2 .accent-line {
            display: inline-block;
            width: 4px;
            height: 36px;
            background: var(--color-orange);
            border-radius: 2px;
            flex-shrink: 0;
        }
        .section-subtitle {
            color: #C0C0C8;
            font-size: 16px;
            margin-top: 8px;
        }

        /* ========== 痛点区 ========== */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .pain-card {
            background: rgba(21, 21, 24, 0.85);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: all var(--transition-smooth);
            position: relative;
        }
        .pain-card:hover {
            border-color: var(--color-border-hover);
            box-shadow: var(--shadow-glow-orange);
        }
        .pain-card .pain-icon {
            width: 48px;
            height: 48px;
            margin-bottom: 18px;
            color: var(--color-orange);
        }
        .pain-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .pain-card p {
            color: #A0A0A8;
            font-size: 14px;
            line-height: 1.6;
        }

        /* ========== 解决方案区 ========== */
        .solution-block {
            display: flex;
            align-items: center;
            gap: 56px;
            margin-bottom: 60px;
        }
        .solution-block:last-child {
            margin-bottom: 0;
        }
        .solution-block.reverse {
            flex-direction: row-reverse;
        }
        .solution-text {
            flex: 1;
            min-width: 0;
        }
        .solution-number {
            font-family: var(--font-en-num);
            font-size: 72px;
            font-weight: 800;
            color: rgba(240, 76, 0, 0.2);
            line-height: 1;
            margin-bottom: 8px;
            letter-spacing: -2px;
        }
        .solution-text h3 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }
        .solution-text p {
            color: #B0B0B8;
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 16px;
            max-width: 440px;
        }
        .solution-features {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .solution-features li {
            font-size: 14px;
            color: #C0C0C8;
            padding-left: 20px;
            position: relative;
            line-height: 1.5;
        }
        .solution-features li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 7px;
            width: 8px;
            height: 8px;
            background: var(--color-orange);
            border-radius: 2px;
            transform: rotate(45deg);
        }
        .solution-image {
            flex: 1;
            min-width: 0;
            position: relative;
        }
        .solution-image img {
            width: 100%;
            height: 300px;
            object-fit: cover;
            border-radius: var(--radius-md);
            border: 1px solid rgba(240, 76, 0, 0.2);
            transition: all var(--transition-smooth);
        }
        .solution-image:hover img {
            border-color: rgba(240, 76, 0, 0.5);
            box-shadow: var(--shadow-glow-orange);
        }
        .solution-image::after {
            content: '';
            position: absolute;
            inset: -4px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(167, 0, 255, 0.15);
            pointer-events: none;
            transition: border-color var(--transition-smooth);
        }
        .solution-image:hover::after {
            border-color: rgba(167, 0, 255, 0.4);
        }

        /* ========== 成果数据区 ========== */
        .results-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .result-item {
            padding: 20px;
        }
        .result-number {
            font-family: var(--font-en-num);
            font-size: 64px;
            font-weight: 700;
            color: var(--color-gold);
            line-height: 1.1;
            text-shadow: 0 0 30px rgba(240, 192, 64, 0.35), 0 0 8px rgba(240, 192, 64, 0.5);
            letter-spacing: 0px;
        }
        .result-label {
            font-size: 15px;
            color: #A0A0A8;
            margin-top: 8px;
            font-weight: 500;
        }

        /* ========== 客户证言区 ========== */
        .testimonial-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 16px;
            scrollbar-width: thin;
            scrollbar-color: rgba(240, 76, 0, 0.3) transparent;
        }
        .testimonial-scroll::-webkit-scrollbar {
            height: 5px;
        }
        .testimonial-scroll::-webkit-scrollbar-track {
            background: transparent;
        }
        .testimonial-scroll::-webkit-scrollbar-thumb {
            background: rgba(240, 76, 0, 0.3);
            border-radius: 10px;
        }
        .testimonial-card {
            flex: 0 0 420px;
            scroll-snap-align: start;
            background: #1E1E24;
            border: 1px solid rgba(240, 76, 0, 0.2);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: all var(--transition-smooth);
            min-width: 320px;
        }
        .testimonial-card:hover {
            border-color: var(--color-border-hover);
            box-shadow: var(--shadow-glow-orange);
        }
        .testimonial-avatar {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            object-fit: cover;
            flex-shrink: 0;
            border: 2px solid rgba(240, 76, 0, 0.3);
        }
        .testimonial-body blockquote {
            font-style: italic;
            color: #D0D0D6;
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 12px;
            quotes: none;
        }
        .testimonial-author {
            font-weight: 600;
            color: #fff;
            font-size: 14px;
        }
        .testimonial-role {
            font-size: 12px;
            color: #888;
            margin-top: 2px;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            max-width: 800px;
        }
        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            transition: background var(--transition-smooth);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 20px 0;
            background: none;
            border: none;
            color: #E0E0E6;
            font-size: 17px;
            font-weight: 600;
            cursor: pointer;
            text-align: left;
            font-family: var(--font-cn);
            letter-spacing: 0.5px;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: #fff;
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            position: relative;
            transition: transform var(--transition-smooth);
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--color-orange);
            border-radius: 2px;
            transition: all var(--transition-smooth);
        }
        .faq-icon::before {
            width: 16px;
            height: 2px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }
        .faq-icon::after {
            width: 2px;
            height: 16px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 0 20px 0;
            color: #A0A0A8;
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer-inner {
            background: rgba(255, 255, 255, 0.015);
            border-radius: 0 0 var(--radius-sm) var(--radius-sm);
            margin: 0 -8px;
            padding: 4px 8px 20px 8px;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            background-color: var(--color-black);
            background-image:
                linear-gradient(0deg, rgba(11, 11, 12, 0.85) 0%, rgba(11, 11, 12, 0.65) 100%),
                url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 100px 0;
            text-align: center;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(240, 76, 0, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .cta-content h2 {
            font-size: 38px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 1px;
            font-family: var(--font-cn);
        }
        .cta-content p {
            color: #C0C0C8;
            font-size: 16px;
            margin-bottom: 32px;
        }
        .btn-cta-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 16px 44px;
            font-size: 18px;
            font-weight: 700;
            background: var(--color-orange);
            color: #fff;
            border-radius: var(--radius-sm);
            letter-spacing: 1px;
            cursor: pointer;
            position: relative;
            border: none;
            font-family: var(--font-cn);
            transition: all var(--transition-smooth);
            box-shadow: 0 0 0 rgba(240, 76, 0, 0);
        }
        .btn-cta-main:hover {
            background: var(--color-orange-hover);
            box-shadow: var(--shadow-glow-orange-strong);
            transform: translateY(-2px);
        }
        .btn-cta-main::after {
            content: '';
            position: absolute;
            inset: -6px;
            border-radius: calc(var(--radius-sm) + 6px);
            border: 2px solid rgba(240, 76, 0, 0.5);
            animation: ripplePulse 2s ease-in-out infinite;
            pointer-events: none;
        }
        @keyframes ripplePulse {
            0%,
            100% {
                transform: scale(1);
                opacity: 0.5;
            }
            50% {
                transform: scale(1.08);
                opacity: 0;
            }
        }
        .cta-note {
            font-size: 13px;
            color: #777;
            margin-top: 16px;
        }

        /* ========== 页脚 ========== */
        .footer {
            background: var(--color-black);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(240, 76, 0, 0.1);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: 40px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col p,
        .footer-col a,
        .footer-col span {
            font-size: 14px;
            color: #888;
            line-height: 1.8;
        }
        .footer-col a:hover {
            color: var(--color-orange);
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-social {
            display: flex;
            gap: 14px;
            margin-top: 12px;
            flex-wrap: wrap;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #888;
            font-size: 14px;
            transition: all var(--transition-fast);
        }
        .footer-social a:hover {
            border-color: var(--color-orange);
            color: var(--color-orange);
            box-shadow: 0 0 14px rgba(240, 76, 0, 0.3);
        }
        .footer-bottom {
            text-align: center;
            font-size: 13px;
            color: #666;
            padding-top: 30px;
            margin-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 38px;
            }
            .section-header h2 {
                font-size: 32px;
            }
            .solution-block {
                gap: 32px;
            }
            .solution-number {
                font-size: 56px;
            }
            .solution-text h3 {
                font-size: 24px;
            }
            .results-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .result-number {
                font-size: 52px;
            }
            .testimonial-card {
                flex: 0 0 360px;
                min-width: 280px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-menu {
                display: flex;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-buttons {
                flex-direction: column;
                gap: 12px;
            }
            .hero-buttons .btn {
                width: 100%;
            }
            .scroll-hint {
                right: 20px;
                bottom: 24px;
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .section-header h2 {
                font-size: 28px;
            }
            .section-header h2 .accent-line {
                height: 28px;
                width: 3px;
            }
            .pain-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .solution-block,
            .solution-block.reverse {
                flex-direction: column;
                gap: 24px;
            }
            .solution-image img {
                height: 220px;
            }
            .solution-number {
                font-size: 44px;
            }
            .solution-text h3 {
                font-size: 22px;
            }
            .results-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .result-number {
                font-size: 44px;
            }
            .testimonial-scroll {
                flex-direction: column;
                overflow-x: visible;
                gap: 16px;
            }
            .testimonial-card {
                flex: 1 1 auto;
                min-width: auto;
                scroll-snap-align: none;
            }
            .cta-content h2 {
                font-size: 28px;
            }
            .btn-cta-main {
                padding: 14px 32px;
                font-size: 16px;
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .hero-content {
                padding-top: 100px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .results-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .result-number {
                font-size: 36px;
            }
            .result-label {
                font-size: 13px;
            }
            .testimonial-card {
                flex-direction: column;
                align-items: center;
                text-align: center;
                padding: 20px 16px;
            }
            .testimonial-body blockquote {
                text-align: center;
            }
            .cta-content h2 {
                font-size: 24px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 14px;
            }
            .faq-question {
                font-size: 15px;
            }
            .solution-image img {
                height: 180px;
            }
        }