/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --bg-deep: #0B1110;
            --bg-body: #0E1412;
            --bg-card: rgba(255, 255, 255, 0.04);
            --bg-input: rgba(0, 0, 0, 0.35);
            --tea-green: #3E7A5C;
            --tea-green-light: #55D6BE;
            --amber: #C9934E;
            --text-primary: #E2E8E4;
            --text-body: #C0CCC4;
            --text-muted: #8B9A90;
            --border-amber: rgba(201, 147, 78, 0.25);
            --border-teal: rgba(85, 214, 190, 0.4);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-btn: 50px;
            --shadow-base: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 20px rgba(201, 147, 78, 0.15);
            --shadow-glow-hover: 0 0 30px rgba(85, 214, 190, 0.25);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

        /* ========== Reset / Base ========== */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            background-color: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--tea-green);
            text-decoration: none;
            transition: all 0.25s ease;
        }
        a:hover {
            color: var(--tea-green-light);
            text-shadow: 0 0 12px rgba(85, 214, 190, 0.5);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        button, input, select, textarea {
            font-family: inherit;
        }
        section {
            padding: clamp(56px, 9vw, 96px) 0;
            position: relative;
        }

        /* 通用容器重设 */
        .container-xxl {
            max-width: 1440px;
        }

        /* 通用板块标题 */
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--amber);
            text-transform: uppercase;
            margin-bottom: 16px;
        }
        .section-label::before {
            content: '';
            display: block;
            width: 30px;
            height: 1px;
            background: var(--amber);
            box-shadow: 0 0 8px rgba(201, 147, 78, 0.6);
        }
        .section-title {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-title::after {
            content: '';
            display: block;
            width: 40px;
            height: 2px;
            background: linear-gradient(90deg, var(--amber), transparent);
            box-shadow: 0 0 12px rgba(201, 147, 78, 0.5);
            margin-top: 18px;
            margin-bottom: 24px;
        }
        .section-desc {
            color: var(--text-body);
            font-size: 0.95rem;
            max-width: 720px;
            margin-bottom: 40px;
            line-height: 1.8;
        }

        /* 通用装饰分隔线 */
        .divider-line {
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
            border: none;
        }

        /* ========== 导航栏 ========== */
        .navbar {
            background: rgba(11, 17, 16, 0.92) !important;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(201, 147, 78, 0.35);
            padding: 12px 0;
            transition: background 0.3s ease;
        }
        .navbar .container-xxl {
            position: relative;
        }
        .navbar-brand {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
            padding: 0;
        }
        .navbar-brand .brand-main {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 1px;
            transition: color 0.25s;
        }
        .navbar-brand .brand-sub {
            font-size: 0.78rem;
            color: var(--tea-green-light);
            letter-spacing: 2px;
            opacity: 0.9;
            font-weight: 500;
        }
        .navbar-brand:hover .brand-main {
            color: var(--tea-green-light);
        }
        .navbar-nav .nav-link {
            color: var(--text-body) !important;
            font-size: 0.92rem;
            font-weight: 500;
            padding: 10px 18px !important;
            position: relative;
            transition: all 0.25s ease;
        }
        .navbar-nav .nav-link::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--tea-green-light);
            box-shadow: 0 4px 12px rgba(85, 214, 190, 0.5);
            transition: width 0.25s ease;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--text-primary) !important;
        }
        .navbar-nav .nav-link:hover::after,
        .navbar-nav .nav-link.active::after {
            width: 70%;
        }
        .nav-cta-btn {
            background: linear-gradient(135deg, var(--tea-green), var(--amber));
            color: #fff !important;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 26px !important;
            font-weight: 600;
            font-size: 0.88rem;
            transition: all 0.3s ease;
            box-shadow: 0 4px 16px rgba(62, 122, 92, 0.35);
            position: relative;
        }
        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(62, 122, 92, 0.5), 0 0 20px rgba(85, 214, 190, 0.2);
            color: #fff !important;
        }
        .navbar-toggler {
            border: 1px solid var(--amber);
            background: transparent;
            padding: 6px 10px;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(201, 147, 78, 0.25);
        }
        .navbar-toggler .navbar-toggler-icon {
            background-image: none;
            position: relative;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 4px;
        }
        .navbar-toggler .navbar-toggler-icon::before,
        .navbar-toggler .navbar-toggler-icon::after,
        .navbar-toggler .navbar-toggler-icon span {
            content: '';
            display: block;
            width: 20px;
            height: 2px;
            background: var(--amber);
        }
        .navbar-toggler .navbar-toggler-icon::before {
            width: 20px;
            align-self: center;
        }
        .navbar-toggler .navbar-toggler-icon::after {
            width: 14px;
            align-self: flex-end;
            margin-right: 3px;
        }
        .navbar-collapse {
            background: transparent;
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.jpg') center center / cover no-repeat;
            background-attachment: fixed;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(5, 10, 8, 0.88) 30%, rgba(11, 17, 16, 0.72));
            z-index: 1;
        }
        .hero-glow-1 {
            position: absolute;
            top: 10%;
            right: 10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(62, 122, 92, 0.18), transparent 70%);
            border-radius: 50%;
            z-index: 2;
            pointer-events: none;
        }
        .hero-glow-2 {
            position: absolute;
            bottom: 15%;
            left: 5%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(201, 147, 78, 0.12), transparent 70%);
            border-radius: 50%;
            z-index: 2;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 5;
            padding: 140px 0 100px;
        }
        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-size: 0.88rem;
            font-weight: 500;
            letter-spacing: 3px;
            color: var(--amber);
            border: 1px solid rgba(201, 147, 78, 0.4);
            background: rgba(11, 17, 16, 0.6);
            padding: 8px 20px;
            border-radius: 50px;
            margin-bottom: 28px;
            backdrop-filter: blur(6px);
        }
        .hero-eyebrow .dot {
            width: 6px;
            height: 6px;
            background: var(--tea-green-light);
            border-radius: 50%;
            box-shadow: 0 0 12px rgba(85, 214, 190, 0.8);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.6; transform: scale(0.8); }
        }
        .hero h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 18px;
            text-shadow: 0 0 24px rgba(201, 147, 78, 0.5), 0 0 60px rgba(62, 122, 92, 0.3);
        }
        .hero-subtitle {
            font-size: clamp(1rem, 1.6vw, 1.2rem);
            color: var(--text-body);
            max-width: 620px;
            margin-bottom: 32px;
            line-height: 1.9;
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 40px;
        }
        .btn-hero-primary {
            background: linear-gradient(135deg, var(--tea-green), var(--amber));
            color: #fff !important;
            border: none;
            border-radius: var(--radius-btn);
            padding: 14px 36px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            box-shadow: 0 8px 24px rgba(62, 122, 92, 0.4);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-hero-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(62, 122, 92, 0.6), 0 0 30px rgba(85, 214, 190, 0.2);
            color: #fff !important;
            filter: brightness(1.1);
        }
        .btn-hero-outline {
            background: transparent;
            border: 2px solid var(--amber);
            color: var(--amber) !important;
            border-radius: var(--radius-btn);
            padding: 13px 34px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-hero-outline:hover {
            background: rgba(201, 147, 78, 0.1);
            color: #fff !important;
            border-color: var(--tea-green-light);
            box-shadow: 0 0 20px rgba(85, 214, 190, 0.2);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-stats .stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stats .stat-num {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
        }
        .hero-stats .stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            letter-spacing: 1px;
        }
        .hero-scroll {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 5;
            display: flex;
            flex-direction: column;
            align-items: center;
            color: var(--text-muted);
            font-size: 0.75rem;
            letter-spacing: 2px;
        }
        .hero-scroll .line {
            width: 1px;
            height: 36px;
            background: linear-gradient(180deg, var(--amber), transparent);
            margin-top: 8px;
            position: relative;
            overflow: hidden;
        }
        .hero-scroll .line::after {
            content: '';
            position: absolute;
            top: -100%;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--tea-green-light);
            animation: scroll-line 1.6s ease-in-out infinite;
        }
        @keyframes scroll-line {
            0% { top: -100%; }
            100% { top: 100%; }
        }

        /* ========== 痛点区 ========== */
        .pain-section {
            background: var(--bg-deep);
            position: relative;
        }
        .pain-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(201, 147, 78, 0.4), transparent);
        }
        .pain-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(201, 147, 78, 0.22);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            height: 100%;
            position: relative;
            backdrop-filter: blur(4px);
            transition: all 0.3s ease;
            box-shadow: var(--shadow-base);
        }
        .pain-card::before {
            content: '';
            position: absolute;
            top: 14px;
            left: 14px;
            width: 8px;
            height: 8px;
            background: var(--amber);
            border-radius: 50%;
            box-shadow: 0 0 12px rgba(201, 147, 78, 0.6);
        }
        .pain-card:hover {
            border-color: rgba(85, 214, 190, 0.4);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-4px);
        }
        .pain-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            border: 1px solid var(--tea-green);
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(62, 122, 92, 0.12);
            color: var(--tea-green-light);
            font-size: 1.25rem;
            margin-bottom: 20px;
            box-shadow: 0 0 14px rgba(62, 122, 92, 0.2);
        }
        .pain-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .pain-card p {
            font-size: 0.92rem;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ========== 解决方案区 ========== */
        .solution-section {
            background: var(--bg-body);
            position: relative;
        }
        .solution-frame {
            border: 1px solid rgba(201, 147, 78, 0.3);
            border-radius: var(--radius-lg);
            padding: 12px;
            background: rgba(255, 255, 255, 0.02);
            box-shadow: var(--shadow-base), var(--shadow-glow);
            position: relative;
        }
        .solution-frame::before,
        .solution-frame::after {
            content: '';
            position: absolute;
            width: 30px;
            height: 30px;
            pointer-events: none;
        }
        .solution-frame::before {
            top: -1px;
            left: -1px;
            border-top: 2px solid var(--tea-green-light);
            border-left: 2px solid var(--tea-green-light);
            border-top-left-radius: 16px;
        }
        .solution-frame::after {
            bottom: -1px;
            right: -1px;
            border-bottom: 2px solid var(--amber);
            border-right: 2px solid var(--amber);
            border-bottom-right-radius: 16px;
        }
        .solution-img {
            border-radius: 12px;
            overflow: hidden;
            height: 100%;
            min-height: 380px;
            background: url('/assets/images/coverpic/cover-1.jpg') center center / cover no-repeat;
        }
        .solution-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            opacity: 0;
        }
        .solution-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .solution-item:last-of-type {
            border-bottom: none;
        }
        .solution-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--tea-green);
            line-height: 1;
            text-shadow: 0 0 16px rgba(62, 122, 92, 0.4);
            min-width: 44px;
        }
        .solution-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .solution-item p {
            font-size: 0.9rem;
            color: var(--text-body);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ========== 成果区 ========== */
        .result-section {
            background: var(--bg-deep);
            position: relative;
        }
        .result-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(85, 214, 190, 0.3), transparent);
        }
        .result-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
            margin-bottom: 40px;
        }
        .result-item {
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(62, 122, 92, 0.2);
            transition: all 0.3s ease;
        }
        .result-item:hover {
            border-color: rgba(85, 214, 190, 0.35);
            box-shadow: var(--shadow-glow-hover);
        }
        .result-num {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--tea-green);
            line-height: 1.2;
            text-shadow: 0 0 24px rgba(62, 122, 92, 0.5);
            margin-bottom: 6px;
        }
        .result-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .badges-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-top: 24px;
        }
        .quality-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            border: 1px solid rgba(201, 147, 78, 0.45);
            border-radius: 50px;
            background: transparent;
            color: var(--text-primary);
            font-size: 0.9rem;
            font-weight: 600;
            transition: all 0.3s ease;
            cursor: default;
        }
        .quality-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            background: var(--amber);
            border-radius: 50%;
            box-shadow: 0 0 8px rgba(201, 147, 78, 0.8);
        }
        .quality-badge:hover {
            border-color: var(--tea-green-light);
            box-shadow: 0 0 20px rgba(85, 214, 190, 0.2);
            transform: translateY(-2px);
        }

        /* ========== 客户证言区 ========== */
        .testimonial-section {
            background: var(--bg-body);
            position: relative;
        }
        .testimonial-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(201, 147, 78, 0.22);
            border-radius: var(--radius-lg);
            padding: 28px 28px 24px;
            height: 100%;
            position: relative;
            transition: all 0.3s ease;
            backdrop-filter: blur(4px);
        }
        .testimonial-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 20px;
            right: 20px;
            height: 3px;
            background: linear-gradient(90deg, rgba(201, 147, 78, 0.7), rgba(85, 214, 190, 0.4), transparent);
            border-radius: 3px 3px 0 0;
        }
        .testimonial-card:hover {
            border-color: rgba(85, 214, 190, 0.4);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-4px);
        }
        .testimonial-stars {
            color: var(--amber);
            font-size: 0.9rem;
            letter-spacing: 3px;
            margin-bottom: 12px;
        }
        .testimonial-quote {
            font-size: 0.92rem;
            color: var(--text-body);
            line-height: 1.85;
            margin-bottom: 16px;
            flex-grow: 1;
            min-height: 96px;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-top: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--tea-green), var(--amber));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
        }
        .author-name {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
        }
        .author-scene {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* ========== FAQ 区 ========== */
        .faq-section {
            background: var(--bg-deep);
            position: relative;
        }
        .faq-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(201, 147, 78, 0.35), transparent);
        }
        .accordion {
            --bs-accordion-bg: rgba(255, 255, 255, 0.03);
            --bs-accordion-border-color: rgba(201, 147, 78, 0.2);
            --bs-accordion-border-radius: var(--radius-md);
            --bs-accordion-btn-color: var(--text-primary);
            --bs-accordion-btn-bg: rgba(255, 255, 255, 0.02);
            --bs-accordion-active-bg: rgba(62, 122, 92, 0.12);
            --bs-accordion-active-color: var(--tea-green-light);
        }
        .accordion-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(201, 147, 78, 0.2);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: rgba(85, 214, 190, 0.5);
            box-shadow: 0 0 16px rgba(85, 214, 190, 0.15);
        }
        .accordion-button {
            background: rgba(255, 255, 255, 0.02);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.98rem;
            padding: 20px 24px;
            box-shadow: none !important;
            border-radius: var(--radius-md) !important;
            position: relative;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(62, 122, 92, 0.12);
            color: var(--tea-green-light);
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(85, 214, 190, 0.15);
        }
        .accordion-button::after {
            background-image: none;
            content: '+';
            font-size: 1.5rem;
            font-weight: 400;
            color: var(--amber);
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            line-height: 1;
            transition: transform 0.35s ease;
            border: 1px solid rgba(201, 147, 78, 0.4);
            border-radius: 50%;
            box-shadow: none;
        }
        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            border-color: var(--tea-green-light);
            color: var(--tea-green-light);
        }
        .accordion-body {
            padding: 16px 24px 24px;
            color: var(--text-body);
            font-size: 0.92rem;
            line-height: 1.85;
        }

        /* ========== CTA 区 ========== */
        .cta-section {
            position: relative;
            background: var(--bg-body);
            overflow: hidden;
        }
        .cta-glow {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 700px;
            height: 500px;
            background: radial-gradient(ellipse, rgba(201, 147, 78, 0.18) 0%, rgba(62, 122, 92, 0.1) 40%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-box {
            background: rgba(11, 17, 16, 0.85);
            border: 1px solid rgba(201, 147, 78, 0.35);
            border-radius: 20px;
            padding: clamp(32px, 5vw, 56px);
            box-shadow: var(--shadow-base), var(--shadow-glow);
            backdrop-filter: blur(8px);
            max-width: 720px;
            margin: 0 auto;
            position: relative;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -1px;
            left: 30px;
            right: 30px;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--tea-green-light), transparent);
            border-radius: 2px;
        }
        .cta-title {
            font-size: clamp(1.4rem, 2.4vw, 1.9rem);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            text-align: center;
        }
        .cta-desc {
            color: var(--text-body);
            font-size: 0.95rem;
            text-align: center;
            margin-bottom: 28px;
        }
        .form-label {
            color: var(--text-primary);
            font-size: 0.9rem;
            font-weight: 500;
        }
        .form-control,
        .form-select {
            background: rgba(0, 0, 0, 0.35);
            border: 1px solid rgba(201, 147, 78, 0.3);
            border-radius: 10px;
            color: var(--text-primary);
            padding: 12px 16px;
            font-size: 0.92rem;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .form-control::placeholder {
            color: #6B7A71;
        }
        .form-control:focus,
        .form-select:focus {
            background: rgba(0, 0, 0, 0.45);
            border-color: #55D6BE;
            box-shadow: 0 0 0 4px rgba(85, 214, 190, 0.15);
            color: var(--text-primary);
        }
        .form-select {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23C9934E' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
        }
        .form-select option {
            background: var(--bg-deep);
            color: var(--text-primary);
        }
        .btn-submit {
            width: 100%;
            height: 48px;
            background: linear-gradient(135deg, var(--tea-green), var(--amber));
            border: none;
            border-radius: var(--radius-btn);
            color: #fff !important;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            box-shadow: 0 8px 24px rgba(62, 122, 92, 0.4);
            margin-top: 8px;
        }
        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(62, 122, 92, 0.6), 0 0 30px rgba(85, 214, 190, 0.3);
            filter: brightness(1.1);
            color: #fff !important;
        }
        .form-note {
            font-size: 0.82rem;
            color: var(--text-muted);
            text-align: center;
            margin-top: 14px;
        }
        .submit-success {
            display: none;
            text-align: center;
            padding: 16px;
            background: rgba(62, 122, 92, 0.15);
            border: 1px solid rgba(85, 214, 190, 0.4);
            border-radius: 10px;
            color: var(--tea-green-light);
            font-size: 0.92rem;
            margin-top: 16px;
        }

        /* ========== 页脚 ========== */
        .footer {
            background: var(--bg-deep);
            border-top: 1px solid transparent;
            border-image: linear-gradient(90deg, transparent, rgba(201, 147, 78, 0.5), transparent) 1;
            padding: 64px 0 24px;
            position: relative;
        }
        .footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(85, 214, 190, 0.5), rgba(201, 147, 78, 0.5), transparent);
        }
        .footer-brand {
            display: flex;
            flex-direction: column;
            margin-bottom: 24px;
        }
        .footer-brand .f-brand-main {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .footer-brand .f-brand-sub {
            font-size: 0.8rem;
            color: var(--tea-green-light);
            letter-spacing: 2px;
        }
        .footer-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 300px;
        }
        .footer h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer h5::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--amber);
            box-shadow: 0 0 8px rgba(201, 147, 78, 0.5);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: color 0.25s ease, padding-left 0.25s ease;
            display: inline-block;
        }
        .footer-links a:hover {
            color: var(--tea-green-light);
            padding-left: 6px;
            text-shadow: 0 0 10px rgba(85, 214, 190, 0.4);
        }
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-contact li {
            color: var(--text-muted);
            font-size: 0.88rem;
            margin-bottom: 12px;
            display: flex;
            gap: 10px;
            align-items: flex-start;
        }
        .footer-contact i {
            color: var(--amber);
            margin-top: 4px;
            min-width: 16px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            margin-top: 40px;
        }
        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.82rem;
            margin: 0;
            text-align: center;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--tea-green-light);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: rgba(11, 17, 16, 0.97);
                border-radius: 12px;
                padding: 16px 20px;
                margin-top: 12px;
                border: 1px solid rgba(201, 147, 78, 0.25);
                backdrop-filter: blur(12px);
                box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
            }
            .navbar-nav .nav-link {
                padding: 14px 16px !important;
                border-left: 2px solid transparent;
            }
            .navbar-nav .nav-link::after {
                display: none;
            }
            .navbar-nav .nav-link:hover,
            .navbar-nav .nav-link.active {
                border-left: 2px solid var(--tea-green-light);
                background: rgba(85, 214, 190, 0.08);
                border-radius: 8px;
            }
            .nav-cta-btn {
                margin: 12px 0 4px;
                text-align: center;
                display: block;
            }
            .hero {
                background-attachment: scroll;
            }
            .solution-img {
                min-height: 300px;
                margin-bottom: 24px;
            }
            .result-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 767.98px) {
            .hero-content {
                padding-top: 110px;
                padding-bottom: 80px;
            }
            .hero-stats {
                gap: 20px;
                flex-direction: column;
            }
            .hero-btns .btn-hero-primary,
            .hero-btns .btn-hero-outline {
                width: 100%;
                justify-content: center;
            }
            .badges-row {
                gap: 10px;
            }
            .quality-badge {
                padding: 8px 18px;
                font-size: 0.82rem;
            }
        }
        @media (max-width: 575.98px) {
            section {
                padding: 48px 0;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .result-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .result-num {
                font-size: 1.8rem;
            }
            .result-item {
                padding: 20px 16px;
            }
            .testimonial-quote {
                min-height: 0;
            }
            .cta-box {
                padding: 28px 20px;
                border-radius: 14px;
            }
            .footer {
                padding-top: 48px;
                text-align: center;
            }
            .footer-desc {
                margin-left: auto;
                margin-right: auto;
            }
            .footer h5::after {
                left: 50%;
                transform: translateX(-50%);
            }
            .footer-contact li {
                justify-content: center;
            }
        }

        /* 移动端菜单 */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                transition: opacity 0.3s ease;
            }
        }