/* ===========================
   EasyBCD 官网 - 主样式表
   =========================== */

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: #334155;
    background: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img, svg {
    display: block;
    max-width: 100%;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 12px;
}

.section-header p {
    font-size: 1.1rem;
    color: #64748b;
}

.section-header.light h2 {
    color: #f1f5f9;
}

.section-header.light p {
    color: #94a3b8;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #3B82F6, #2563EB);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(59, 130, 246, 0.5);
}

.btn-outline {
    background: transparent;
    color: #3B82F6;
    border: 2px solid #3B82F6;
}

.btn-outline:hover {
    background: #3B82F6;
    color: #ffffff;
    transform: translateY(-2px);
}

.btn-white {
    background: #ffffff;
    color: #2563EB;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.15);
}

.btn-white-outline {
    background: transparent;
    color: #ffffff;
    border: 2px solid #ffffff;
}

.btn-white-outline:hover {
    background: #ffffff;
    color: #2563EB;
    transform: translateY(-2px);
}

/* ===========================
   1. 导航栏
   =========================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 700;
    color: #0f172a;
}

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

.logo-icon {
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 18px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    color: #475569;
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: #3B82F6;
    background: rgba(59, 130, 246, 0.08);
}

.nav-link.active {
    color: #3B82F6;
    background: rgba(59, 130, 246, 0.1);
    font-weight: 600;
}

.nav-download-btn {
    padding: 10px 24px;
    background: linear-gradient(135deg, #3B82F6, #2563EB);
    color: #ffffff;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(59, 130, 246, 0.3);
}

.nav-download-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}

/* 兼容附属页的导航栏结构 */
.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.navbar .nav-links > a {
    padding: 8px 18px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    color: #475569;
    transition: all 0.3s ease;
}

.navbar .nav-links > a:hover {
    color: #3B82F6;
    background: rgba(59, 130, 246, 0.08);
}

.navbar .nav-links > a.active {
    color: #3B82F6;
    background: rgba(59, 130, 246, 0.1);
    font-weight: 600;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2.5px;
    background: #334155;
    border-radius: 2px;
    transition: all 0.3s ease;
}

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

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

.hamburger span {
    width: 24px;
    height: 2.5px;
    background: #334155;
    border-radius: 2px;
    transition: all 0.3s ease;
}

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

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

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

/* ===========================
   2. Hero 区域
   =========================== */
.hero {
    position: relative;
    min-height: 100vh;
    padding-top: 72px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 30%, #f8fafc 100%);
    overflow: hidden;
}

.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.particles span {
    position: absolute;
    width: 6px;
    height: 6px;
    background: rgba(59, 130, 246, 0.15);
    border-radius: 50%;
    animation: float-particle linear infinite;
}

.particles span:nth-child(1) { left: 5%;  top: 20%; animation-duration: 12s; animation-delay: 0s;   width: 8px; height: 8px; }
.particles span:nth-child(2) { left: 15%; top: 60%; animation-duration: 15s; animation-delay: 1s;   width: 4px; height: 4px; }
.particles span:nth-child(3) { left: 25%; top: 30%; animation-duration: 10s; animation-delay: 2s;   width: 10px; height: 10px; }
.particles span:nth-child(4) { left: 35%; top: 70%; animation-duration: 14s; animation-delay: 3s;   width: 5px; height: 5px; }
.particles span:nth-child(5) { left: 45%; top: 15%; animation-duration: 11s; animation-delay: 0.5s; width: 7px; height: 7px; }
.particles span:nth-child(6) { left: 55%; top: 80%; animation-duration: 13s; animation-delay: 1.5s; width: 6px; height: 6px; }
.particles span:nth-child(7) { left: 65%; top: 25%; animation-duration: 16s; animation-delay: 2.5s; width: 9px; height: 9px; }
.particles span:nth-child(8) { left: 75%; top: 50%; animation-duration: 12s; animation-delay: 0.8s; width: 4px; height: 4px; }
.particles span:nth-child(9) { left: 85%; top: 40%; animation-duration: 14s; animation-delay: 3.5s; width: 7px; height: 7px; }
.particles span:nth-child(10){ left: 95%; top: 65%; animation-duration: 11s; animation-delay: 1.2s; width: 5px; height: 5px; }
.particles span:nth-child(11){ left: 10%; top: 85%; animation-duration: 15s; animation-delay: 2.2s; width: 8px; height: 8px; }
.particles span:nth-child(12){ left: 20%; top: 45%; animation-duration: 13s; animation-delay: 0.3s; width: 6px; height: 6px; }
.particles span:nth-child(13){ left: 30%; top: 90%; animation-duration: 16s; animation-delay: 1.8s; width: 10px; height: 10px; }
.particles span:nth-child(14){ left: 40%; top: 10%; animation-duration: 10s; animation-delay: 2.8s; width: 4px; height: 4px; }
.particles span:nth-child(15){ left: 50%; top: 55%; animation-duration: 12s; animation-delay: 0.6s; width: 8px; height: 8px; }
.particles span:nth-child(16){ left: 60%; top: 35%; animation-duration: 14s; animation-delay: 3.2s; width: 5px; height: 5px; }
.particles span:nth-child(17){ left: 70%; top: 75%; animation-duration: 11s; animation-delay: 1.6s; width: 7px; height: 7px; }
.particles span:nth-child(18){ left: 80%; top: 5%;  animation-duration: 15s; animation-delay: 2.6s; width: 9px; height: 9px; }
.particles span:nth-child(19){ left: 90%; top: 55%; animation-duration: 13s; animation-delay: 0.9s; width: 6px; height: 6px; }
.particles span:nth-child(20){ left: 8%;  top: 48%; animation-duration: 16s; animation-delay: 3.8s; width: 4px; height: 4px; }

@keyframes float-particle {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) translateX(30px);
        opacity: 0;
    }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px 80px;
    display: flex;
    align-items: center;
    gap: 60px;
    position: relative;
    z-index: 1;
}

.hero-left {
    flex: 1;
    max-width: 560px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(37, 99, 235, 0.08));
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    color: #2563EB;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 3.2rem;
    font-weight: 800;
    color: #0f172a;
    line-height: 1.25;
    margin-bottom: 24px;
}

.hero-title .highlight {
    background: linear-gradient(135deg, #3B82F6, #1D4ED8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.1rem;
    color: #64748b;
    line-height: 1.8;
    margin-bottom: 32px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.6rem;
    font-weight: 800;
    color: #0f172a;
}

.stat-label {
    font-size: 0.85rem;
    color: #94a3b8;
}

.hero-right {
    flex: 1;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 520px;
}

.hero-image {
    width: 100%;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.15));
}

.float-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 10px;
    background: #ffffff;
    padding: 12px 18px;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    font-size: 0.85rem;
    animation: float-card 3s ease-in-out infinite;
}

.float-card span {
    font-size: 1.4rem;
}

.float-card strong {
    display: block;
    color: #0f172a;
    font-size: 0.85rem;
}

.float-card small {
    color: #94a3b8;
    font-size: 0.75rem;
}

.float-card-1 {
    top: 10%;
    right: -20px;
    animation-delay: 0s;
}

.float-card-2 {
    bottom: 15%;
    left: -20px;
    animation-delay: 1.5s;
}

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

/* ===========================
   3. 品牌信任条
   =========================== */
.trust-bar {
    background: #f8fafc;
    padding: 24px 0;
    border-top: 1px solid #e2e8f0;
    border-bottom: 1px solid #e2e8f0;
}

.trust-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 48px;
    flex-wrap: wrap;
}

.trust-item {
    font-size: 1rem;
    font-weight: 600;
    color: #475569;
    white-space: nowrap;
}

/* ===========================
   4. 核心功能
   =========================== */
.features {
    padding: 100px 0;
    background: #ffffff;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.feature-card {
    padding: 36px 28px;
    border-radius: 16px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    border-color: #bfdbfe;
}

.feature-icon {
    font-size: 2.4rem;
    margin-bottom: 18px;
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.95rem;
    color: #64748b;
    line-height: 1.7;
}

/* ===========================
   5. 软件截图
   =========================== */
.screenshots {
    padding: 100px 0;
    background: linear-gradient(180deg, #f1f5f9 0%, #e2e8f0 100%);
}

.screenshots-content {
    display: flex;
    align-items: flex-start;
    gap: 48px;
}

.screenshot-main {
    flex: 1.3;
}

.screenshot-svg {
    width: 100%;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
}

.screenshot-info {
    flex: 1;
    padding-top: 20px;
}

.screenshot-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 16px;
}

.screenshot-info > p {
    font-size: 0.95rem;
    color: #64748b;
    line-height: 1.8;
    margin-bottom: 24px;
}

.screenshot-features-list {
    margin-bottom: 28px;
}

.screenshot-feature-item {
    font-size: 0.9rem;
    color: #334155;
    padding: 6px 0;
}

.screenshot-thumbnail {
    width: 100%;
    max-width: 280px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    border: 2px solid #e2e8f0;
    transition: transform 0.3s ease;
}

.screenshot-thumbnail:hover {
    transform: scale(1.02);
}

.screenshot-thumbnail svg {
    width: 100%;
    display: block;
}

/* ===========================
   6. 使用步骤
   =========================== */
.steps {
    padding: 100px 0;
    background: #ffffff;
}

.steps-grid {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
}

.step-item {
    text-align: center;
    max-width: 220px;
    padding: 0 16px;
    position: relative;
}

.step-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: #3B82F6;
    margin-bottom: 8px;
}

.step-icon {
    font-size: 2.4rem;
    margin-bottom: 16px;
}

.step-item h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 10px;
}

.step-item p {
    font-size: 0.88rem;
    color: #64748b;
    line-height: 1.7;
}

.step-connector {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, #3B82F6, #93c5fd);
    margin-top: 60px;
    flex-shrink: 0;
}

/* ===========================
   7. 系统兼容性
   =========================== */
.compatibility {
    padding: 100px 0;
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
}

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

.compat-card {
    padding: 28px 24px;
    border-radius: 14px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    text-align: center;
    transition: all 0.3s ease;
}

.compat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    border-color: #bfdbfe;
}

.compat-icon {
    font-size: 2.2rem;
    margin-bottom: 14px;
}

.compat-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 8px;
}

.compat-card p {
    font-size: 0.85rem;
    color: #94a3b8;
}

/* ===========================
   8. 用户评价
   =========================== */
.testimonials {
    padding: 100px 0;
    background: linear-gradient(135deg, #0f172a, #1e293b);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.testimonial-card {
    padding: 32px 28px;
    border-radius: 16px;
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid #334155;
    transition: all 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-4px);
    border-color: #3B82F6;
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.15);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 14px;
}

.testimonial-avatar {
    font-size: 2.4rem;
}

.testimonial-header strong {
    display: block;
    color: #f1f5f9;
    font-size: 1rem;
}

.testimonial-role {
    font-size: 0.85rem;
    color: #94a3b8;
}

.testimonial-stars {
    margin-bottom: 14px;
    font-size: 1rem;
    letter-spacing: 2px;
}

.testimonial-text {
    font-size: 0.95rem;
    color: #cbd5e1;
    line-height: 1.7;
    font-style: italic;
}

/* ===========================
   9. FAQ 常见问题
   =========================== */
.faq {
    padding: 100px 0;
    background: #ffffff;
}

.faq-list {
    max-width: 780px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    overflow: hidden;
    transition: border-color 0.3s ease;
}

.faq-item.active {
    border-color: #3B82F6;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: #f8fafc;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: #0f172a;
    text-align: left;
    transition: background 0.3s ease;
}

.faq-item.active .faq-question {
    background: rgba(59, 130, 246, 0.05);
}

.faq-arrow {
    font-size: 0.8rem;
    color: #94a3b8;
    transition: transform 0.3s ease;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.faq-answer p {
    padding: 20px 24px;
    font-size: 0.95rem;
    color: #64748b;
    line-height: 1.8;
}

/* ===========================
   10. CTA 下载区
   =========================== */
.cta-download {
    position: relative;
    padding: 100px 0;
    background: linear-gradient(135deg, #3B82F6, #1D4ED8, #2563EB);
    overflow: hidden;
    text-align: center;
}

.cta-decor-circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
}

.cta-circle-1 {
    width: 300px;
    height: 300px;
    top: -80px;
    left: -60px;
}

.cta-circle-2 {
    width: 200px;
    height: 200px;
    bottom: -40px;
    right: 10%;
}

.cta-circle-3 {
    width: 150px;
    height: 150px;
    top: 20%;
    right: -30px;
}

.cta-container {
    position: relative;
    z-index: 1;
}

.cta-download h2 {
    font-size: 2.4rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 16px;
}

.cta-download p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.85);
    max-width: 600px;
    margin: 0 auto 36px;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.cta-buttons .btn {
    min-width: 200px;
}

/* ===========================
   11. Footer
   =========================== */
.footer {
    background: #0f172a;
    padding: 60px 0 0;
    color: #94a3b8;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid #1e293b;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 700;
    color: #f1f5f9;
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 0.88rem;
    line-height: 1.7;
    color: #64748b;
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #e2e8f0;
    margin-bottom: 20px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col a {
    font-size: 0.9rem;
    color: #64748b;
    transition: color 0.3s ease;
}

.footer-col a:hover {
    color: #3B82F6;
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: #475569;
}

/* ===========================
   响应式设计
   =========================== */
@media (max-width: 1024px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }

    .hero-left {
        max-width: 100%;
    }

    .hero-title {
        font-size: 2.6rem;
    }

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

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

    .hero-right {
        max-width: 480px;
        width: 100%;
    }

    .float-card-1 {
        right: 0;
    }

    .float-card-2 {
        left: 0;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .screenshots-content {
        flex-direction: column;
        align-items: center;
    }

    .screenshot-main {
        width: 100%;
    }

    .screenshot-info {
        text-align: center;
        padding-top: 0;
    }

    .screenshot-features-list {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px 20px;
    }

    .screenshot-thumbnail {
        margin: 0 auto;
    }

    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        padding: 20px;
        gap: 4px;
        border-bottom: 1px solid #e2e8f0;
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    }

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

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

    .nav-download-btn {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding-top: 72px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-stats {
        gap: 24px;
    }

    .stat-number {
        font-size: 1.3rem;
    }

    .section-header h2 {
        font-size: 1.7rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .steps-grid {
        flex-direction: column;
        align-items: center;
    }

    .step-connector {
        width: 2px;
        height: 40px;
        background: linear-gradient(180deg, #3B82F6, #93c5fd);
        margin-top: 0;
    }

    .compat-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .cta-download h2 {
        font-size: 1.7rem;
    }

    .cta-buttons .btn {
        min-width: 160px;
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .trust-container {
        gap: 20px;
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 8px;
    }

    .trust-item {
        font-size: 0.85rem;
        flex-shrink: 0;
    }
}

/* ===========================
   附属页面：页面头部
   =========================== */
.page-header {
    padding: 140px 0 80px;
    background: linear-gradient(160deg, #0f172a, #1e293b, #1e3a5f);
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15), transparent);
    border-radius: 50%;
}

.page-header h1 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.page-header p {
    font-size: 1.15rem;
    color: #94a3b8;
    max-width: 600px;
    margin: 0 auto;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    color: #94a3b8;
}

.breadcrumb a {
    color: #60a5fa;
}

.breadcrumb a:hover {
    color: #fff;
}

/* ===========================
   附属页面：功能详情
   =========================== */
.feature-detail-section {
    padding: 80px 0;
}

.feature-detail-section:nth-child(even) {
    background: #f8fafc;
}

.feature-detail {
    display: flex;
    align-items: center;
    gap: 60px;
}

.feature-detail:nth-child(even) {
    flex-direction: row-reverse;
}

.feature-detail-text {
    flex: 1;
}

.feature-detail-text h3 {
    font-size: 1.6rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 16px;
}

.feature-detail-text p {
    color: #64748b;
    line-height: 1.8;
    margin-bottom: 16px;
}

.feature-detail-list {
    margin-bottom: 16px;
}

.feature-detail-list li {
    position: relative;
    padding-left: 22px;
    margin-bottom: 8px;
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.7;
}

.feature-detail-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #3B82F6;
    font-weight: 700;
}

.feature-detail-visual {
    flex: 0 0 400px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    border: 1px solid #e2e8f0;
    background: #f1f5f9;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 280px;
}

.feature-detail-visual svg {
    width: 100%;
    height: auto;
    display: block;
}

/* ===========================
   附属页面：功能对比表
   =========================== */
.comparison-section {
    padding: 100px 0;
    background: #fff;
}

.comparison-table-wrap {
    max-width: 900px;
    margin: 0 auto;
    overflow-x: auto;
    border-radius: 16px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.06);
    border: 1px solid #e2e8f0;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 1rem;
}

.comparison-table thead {
    background: linear-gradient(135deg, #3B82F6, #1D4ED8);
    color: #fff;
}

.comparison-table th {
    padding: 18px 28px;
    text-align: center;
    font-weight: 700;
    font-size: 1.05rem;
}

.comparison-table th:first-child {
    text-align: left;
    border-radius: 16px 0 0 0;
}

.comparison-table th:last-child {
    border-radius: 0 16px 0 0;
}

.comparison-table td {
    padding: 16px 28px;
    border-bottom: 1px solid #e2e8f0;
    color: #475569;
}

.comparison-table td:first-child {
    font-weight: 600;
    color: #0f172a;
}

.comparison-table td:not(:first-child) {
    text-align: center;
    font-size: 1.2rem;
}

.comparison-table tbody tr:nth-child(even) {
    background: #f8fafc;
}

.comparison-table tbody tr:last-child td:first-child {
    border-radius: 0 0 0 16px;
}

.comparison-table tbody tr:last-child td:last-child {
    border-radius: 0 0 16px 0;
}

.comparison-table .yes {
    color: #22c55e;
}

.comparison-table .no {
    color: #ef4444;
}

/* ===========================
   附属页面：CTA 下载区
   =========================== */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(160deg, #1D4ED8, #3B82F6);
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1), transparent);
    border-radius: 50%;
}

.cta-section h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.cta-section p {
    font-size: 1.15rem;
    color: #bfdbfe;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    z-index: 1;
}

.cta-section .cta-buttons {
    position: relative;
    z-index: 1;
}

.btn-outline-white {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.5);
    display: inline-block;
    padding: 14px 32px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.btn-outline-white:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
    transform: translateY(-2px);
}

.btn-download {
    padding: 16px 40px;
    font-size: 1.1rem;
}

.nav-cta {
    padding: 10px 24px;
    background: linear-gradient(135deg, #3B82F6, #2563EB);
    color: #fff;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 2px 10px rgba(59, 130, 246, 0.3);
}

/* ===========================
   附属页面：下载页面
   =========================== */
.download-section {
    padding: 80px 0;
}

.download-card {
    background: #fff;
    border-radius: 24px;
    padding: 48px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.06);
    border: 1px solid #e2e8f0;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.download-card h2 {
    font-size: 2rem;
    font-weight: 800;
    color: #0f172a;
    margin-bottom: 8px;
}

.download-card .version {
    font-size: 1rem;
    color: #64748b;
    margin-bottom: 32px;
}

.download-options {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
}

.download-option {
    flex: 1;
    min-width: 280px;
    border: 2px solid #e2e8f0;
    border-radius: 20px;
    padding: 32px;
    transition: all 0.3s;
    cursor: pointer;
    background: #fff;
}

.download-option:hover {
    border-color: #3B82F6;
    box-shadow: 0 12px 36px rgba(59, 130, 246, 0.12);
    transform: translateY(-4px);
}

.download-option .dl-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.download-option h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 8px;
}

.download-option p {
    font-size: 0.9rem;
    color: #64748b;
    margin-bottom: 20px;
}

.download-info {
    margin-top: 48px;
    text-align: left;
}

.download-info h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 20px;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.info-item {
    background: #f8fafc;
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.info-item .emoji {
    font-size: 1.5rem;
}

.info-item .info-label {
    font-size: 0.85rem;
    color: #64748b;
}

.info-item .info-value {
    font-size: 1rem;
    font-weight: 600;
    color: #0f172a;
}

/* ===========================
   附属页面：使用步骤（下载页）
   =========================== */
.steps-section {
    padding: 100px 0;
    background: linear-gradient(180deg, #f1f5f9 0%, #f8fafc 100%);
}

.steps-section .steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    position: relative;
}

.step-card {
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-card .step-number {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, #3B82F6, #1D4ED8);
    color: #fff;
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
}

.step-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 10px;
}

.step-card p {
    font-size: 0.9rem;
    color: #64748b;
    line-height: 1.6;
}

/* ===========================
   附属页面：FAQ（下载页）
   =========================== */
.faq-section {
    padding: 100px 0;
    background: #f8fafc;
}

/* ===========================
   附属页面：响应式
   =========================== */
@media (max-width: 1024px) {
    .feature-detail {
        flex-direction: column !important;
    }
    .feature-detail-visual {
        flex: 0 0 auto;
        width: 100%;
        max-width: 500px;
        margin: 0 auto;
    }
    .steps-section .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .page-header h1 {
        font-size: 2rem;
    }
    .feature-detail-section {
        padding: 50px 0;
    }
    .feature-detail {
        gap: 30px;
    }
    .feature-detail-text h3 {
        font-size: 1.3rem;
    }
    .download-card {
        padding: 28px 20px;
    }
    .download-card h2 {
        font-size: 1.5rem;
    }
    .info-grid {
        grid-template-columns: 1fr;
    }
    .steps-section .steps-grid {
        grid-template-columns: 1fr;
    }
    .cta-section h2 {
        font-size: 1.7rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.6rem;
    }

    .hero-desc {
        font-size: 0.95rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn {
        width: 100%;
    }

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

    .compat-grid {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
}