/* ==================== 设计变量 ==================== */
:root {
    --primary: #374D3C;
    --primary-dark: #2C3F30;
    --primary-light: #4A6650;
    --accent: #C08552;
    --accent-dark: #A96F42;
    --bg-page: #FBF9F5;
    --bg-alt: #F4F1EA;
    --bg-dark: #1F2A22;
    --bg-card: #FFFFFF;
    --text-main: #1E2722;
    --text-body: #4A5348;
    --text-muted: #8B9186;
    --text-placeholder: #B7B2A8;
    --border: #E6E1D6;
    --success: #3D7A57;
    --warning: #B15B4A;
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
    --radius-pill: 999px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s ease-out;
    --container: 1200px;
    --space-section: 96px;
}
/* ==================== Reset / Base ==================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-page);
    color: var(--text-body);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary); }
img { max-width: 100%; display: block; height: auto; }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; border: none; outline: none; background: none; }
button { cursor: pointer; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--bg-dark); }
.text-center { text-align: center; }

/* ==================== 按钮 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-pill);
    font-size: 15px;
    font-weight: 600;
    line-height: 1.2;
    transition: var(--transition);
    white-space: nowrap;
    border: 1px solid transparent;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(55, 77, 60, 0.2);
}
.btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(55, 77, 60, 0.25);
}
.btn-outline {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.4);
    color: #fff;
}
.btn-outline:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}
.btn-outline-dark {
    background: transparent;
    border-color: var(--border);
    color: var(--text-main);
}
.btn-outline-dark:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(55, 77, 60, 0.04);
}
.btn-accent {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 2px 8px rgba(192, 133, 82, 0.25);
}
.btn-accent:hover {
    background: var(--accent-dark);
    color: #fff;
    transform: translateY(-1px);
}
.btn-sm { padding: 10px 22px; font-size: 14px; }
.btn-lg { padding: 16px 40px; font-size: 16px; }

/* ==================== 徽章 / 标签 ==================== */
.badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.04em;
    background: rgba(55, 77, 60, 0.08);
    color: var(--primary);
}
.badge-accent {
    background: rgba(192, 133, 82, 0.12);
    color: var(--accent-dark);
}
.badge-light {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}

/* ==================== 顶部信息条 ==================== */
.topbar {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.75);
    font-size: 13px;
    padding: 8px 0;
    overflow: hidden;
}
.topbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.topbar-left {
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.topbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
    flex-shrink: 0;
}
.topbar-right .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    display: inline-block;
}

/* ==================== 导航 ==================== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}
.header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}
.logo {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: 10px;
    white-space: nowrap;
}
.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    flex-shrink: 0;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    justify-content: center;
}
.nav-link {
    padding: 8px 18px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-body);
    border-radius: var(--radius-pill);
    transition: var(--transition);
}
.nav-link:hover {
    color: var(--primary);
    background: rgba(55, 77, 60, 0.06);
}
.nav-link.active {
    color: var(--primary);
    background: rgba(55, 77, 60, 0.08);
    font-weight: 600;
}
.nav-cta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    border-radius: 8px;
    background: transparent;
}
.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-main);
    border-radius: 2px;
    transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端抽屉 */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -320px;
    width: 320px;
    height: 100vh;
    background: var(--bg-page);
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.12);
    z-index: 200;
    padding: 80px 24px 24px;
    transition: right 0.3s ease-out;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.mobile-nav.open { right: 0; }
.mobile-nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 150;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}
.mobile-nav-overlay.show { opacity: 1; visibility: visible; }
.mobile-nav-link {
    padding: 14px 16px;
    font-size: 17px;
    font-weight: 500;
    color: var(--text-main);
    border-radius: 12px;
    transition: var(--transition);
}
.mobile-nav-link:hover,
.mobile-nav-link.active { background: rgba(55, 77, 60, 0.08); color: var(--primary); }
.mobile-nav-cta { margin-top: 16px; display: flex; flex-direction: column; gap: 12px; }

/* ==================== Hero ==================== */
.hero {
    position: relative;
    background: var(--bg-dark) url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
    color: #fff;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(31, 42, 34, 0.92) 30%, rgba(31, 42, 34, 0.55) 70%, rgba(31, 42, 34, 0.4));
    z-index: 1;
}
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 48px 48px;
    z-index: 2;
}
.hero-content {
    position: relative;
    z-index: 3;
    padding: 100px 0 72px;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
    align-items: center;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-pill);
    padding: 6px 16px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 24px;
}
.hero-badge .pulse {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #7BC47F;
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}
.hero h1 {
    font-size: clamp(2.4rem, 4.5vw, 3.6rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.01em;
    color: #fff;
    margin-bottom: 20px;
}
.hero h1 .highlight {
    color: var(--accent);
}
.hero-desc {
    font-size: 17px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
    max-width: 560px;
}
.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}
.hero-metrics {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
}
.hero-metric {
    text-align: center;
}
.hero-metric .num {
    font-size: 2rem;
    font-weight: 250;
    color: #fff;
    letter-spacing: -0.02em;
}
.hero-metric .label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 4px;
}
.hero-panel {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 20px;
    padding: 28px;
    backdrop-filter: blur(12px);
}
.hero-panel-title {
    font-size: 15px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.hero-panel-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.hero-panel-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    transition: var(--transition);
}
.hero-panel-item:hover {
    background: rgba(255, 255, 255, 0.12);
}
.hero-panel-item .rank {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: #fff;
    flex-shrink: 0;
}
.hero-panel-item .info {
    flex: 1;
    min-width: 0;
}
.hero-panel-item .info .name {
    color: #fff;
    font-size: 15px;
    font-weight: 500;
}
.hero-panel-item .info .count {
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
}
.hero-panel-item .arrow {
    color: rgba(255, 255, 255, 0.4);
}

/* ==================== 数据指标看板 ==================== */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.metric-card:hover {
    border-color: var(--primary);
    transform: scale(1.01);
    box-shadow: var(--shadow-hover);
}
.metric-card .icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(55, 77, 60, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    margin-bottom: 24px;
}
.metric-card .value {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 250;
    color: var(--text-main);
    line-height: 1;
    letter-spacing: -0.02em;
}
.metric-card .label {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 12px;
    font-weight: 500;
}
.metric-card .trend {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    margin-top: 16px;
}
.trend-up { background: rgba(61, 122, 87, 0.1); color: var(--success); }
.trend-new { background: rgba(192, 133, 82, 0.12); color: var(--accent-dark); }
.trend-stable { background: rgba(139, 145, 134, 0.1); color: var(--text-muted); }

/* ==================== 板块标题 ==================== */
.section-header {
    margin-bottom: 48px;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}
.section-header .section-tag {
    font-size: 13px;
    font-weight: 500;
    color: var(--accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.section-header .section-tag::before {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--accent);
    display: inline-block;
}
.section-header h2 {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.25;
    letter-spacing: -0.01em;
}
.section-header .section-desc {
    color: var(--text-muted);
    font-size: 15px;
    max-width: 420px;
}
.section-header .section-link {
    color: var(--primary);
    font-size: 15px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}
.section-header .section-link:hover { gap: 8px; }

/* ==================== 核心服务矩阵 ==================== */
.service-list {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.service-item {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 28px 32px;
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
}
.service-item:last-child { border-bottom: none; }
.service-item:hover {
    background: rgba(244, 241, 234, 0.6);
}
.service-item .service-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(55, 77, 60, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
    transition: var(--transition);
}
.service-item:hover .service-icon {
    transform: translateX(-3px);
    background: var(--primary);
    color: #fff;
}
.service-item .service-body {
    flex: 1;
    min-width: 0;
}
.service-item .service-body h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 4px;
}
.service-item .service-body p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}
.service-item .service-arrow {
    color: var(--text-placeholder);
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: var(--transition);
    flex-shrink: 0;
}
.service-item:hover .service-arrow {
    color: var(--primary);
    gap: 8px;
}

/* ==================== 资讯卡片 ==================== */
.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.info-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.info-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
    border-color: rgba(55, 77, 60, 0.3);
}
.info-card-media {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    display: block;
}
.info-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease-out;
}
.info-card:hover .info-card-media img { transform: scale(1.03); }
.info-card-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.info-card-tagline {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.info-card-tag {
    font-size: 12px;
    font-weight: 500;
    color: var(--accent-dark);
    background: rgba(192, 133, 82, 0.1);
    padding: 3px 10px;
    border-radius: var(--radius-pill);
}
.info-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.4;
    margin-bottom: 8px;
}
.info-card h3 a:hover { color: var(--primary); }
.info-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.info-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}
.info-card-meta time {
    font-size: 13px;
    color: var(--text-muted);
}
.info-card-meta a {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
}
.info-card-meta a:hover { color: var(--accent-dark); }

/* 空状态 */
.empty-state {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 64px 24px;
    text-align: center;
    background: var(--bg-card);
}
.empty-state .icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-placeholder);
    margin: 0 auto 16px;
}
.empty-state p {
    color: var(--text-muted);
    font-size: 15px;
}

/* ==================== 结果对比 ==================== */
.compare-wrap {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    overflow: hidden;
}
.compare-col {
    padding: 40px 36px;
}
.compare-col-left {
    background: #F9F8F5;
}
.compare-col-right {
    background: var(--bg-card);
}
.compare-col h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.compare-col h3 .mini-icon {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: rgba(55, 77, 60, 0.08);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 14px;
}
.compare-col-left h3 .mini-icon {
    background: rgba(177, 91, 74, 0.08);
    color: var(--warning);
}
.compare-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}
.compare-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 15px;
    color: var(--text-body);
    line-height: 1.5;
}
.compare-list li .check {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(61, 122, 87, 0.1);
    color: var(--success);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 12px;
    margin-top: 2px;
}
.compare-list li .cross {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(177, 91, 74, 0.1);
    color: var(--warning);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 12px;
    margin-top: 2px;
}
.compare-vs {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 0 4px var(--bg-card);
    z-index: 2;
}

/* ==================== FAQ ==================== */
.faq-wrap {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: 12px;
    background: var(--bg-card);
    overflow: hidden;
    transition: var(--transition);
}
.faq-item:hover { border-color: rgba(55, 77, 60, 0.3); }
.faq-item.open {
    border-color: var(--primary);
    background: rgba(244, 241, 234, 0.4);
}
.faq-question {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    cursor: pointer;
    user-select: none;
}
.faq-question .q-mark {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(55, 77, 60, 0.1);
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.faq-question .q-text {
    flex: 1;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
}
.faq-question .q-plus {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--text-muted);
    transition: var(--transition);
    flex-shrink: 0;
}
.faq-item.open .q-plus {
    transform: rotate(45deg);
    background: var(--primary);
    color: #fff;
}
.faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}
.faq-item.open .faq-answer {
    max-height: 300px;
    padding: 0 24px 24px 64px;
}
.faq-answer p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-body);
}

/* ==================== 转化表单 ==================== */
.form-panel {
    max-width: 720px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 48px;
    box-shadow: var(--shadow-sm);
}
.form-panel-header {
    text-align: center;
    margin-bottom: 32px;
}
.form-panel-header h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 8px;
}
.form-panel-header p {
    font-size: 14px;
    color: var(--text-muted);
}
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.form-group.full { grid-column: 1 / -1; }
.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-main);
}
.form-group input,
.form-group select,
.form-group textarea {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    font-size: 15px;
    color: var(--text-main);
    background: var(--bg-page);
    transition: var(--transition);
    width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(55, 77, 60, 0.1);
    background: var(--bg-card);
}
.form-group textarea {
    min-height: 100px;
    resize: vertical;
}
.form-submit {
    grid-column: 1 / -1;
    display: flex;
    justify-content: center;
    margin-top: 8px;
}
.form-note {
    text-align: center;
    font-size: 13px;
    color: var(--text-placeholder);
    margin-top: 16px;
}
.form-status {
    padding: 12px 20px;
    border-radius: var(--radius-md);
    font-size: 14px;
    margin-top: 16px;
    display: none;
}
.form-status.success {
    display: block;
    background: rgba(61, 122, 87, 0.1);
    color: var(--success);
    border: 1px solid rgba(61, 122, 87, 0.3);
}
.form-status.error {
    display: block;
    background: rgba(177, 91, 74, 0.1);
    color: var(--warning);
    border: 1px solid rgba(177, 91, 74, 0.3);
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 64px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 0.8fr;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.footer-brand .logo-icon {
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.12);
}
.footer-desc {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.5);
    max-width: 320px;
}
.footer h4 {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 16px;
}
.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-contact {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.footer-contact .contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.35);
    flex-wrap: wrap;
    gap: 8px;
}
.footer-bottom a { color: rgba(255, 255, 255, 0.5); }
.footer-bottom a:hover { color: #fff; }

/* ==================== 浮动CTA条 ==================== */
.float-cta {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 90;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius-pill);
    padding: 14px 24px;
    font-size: 15px;
    font-weight: 600;
    box-shadow: 0 8px 28px rgba(55, 77, 60, 0.35);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}
.float-cta:hover {
    transform: translateY(-2px);
    background: var(--primary-dark);
    color: #fff;
    box-shadow: 0 12px 36px rgba(55, 77, 60, 0.4);
}
.float-cta svg { flex-shrink: 0; }

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
    .section { padding: 72px 0; }
    .hero-content { grid-template-columns: 1fr; gap: 40px; padding: 64px 0 56px; }
    .hero-panel { max-width: 520px; }
    .metrics-grid { grid-template-columns: repeat(2, 1fr); }
    .nav-links { display: none; }
    .nav-cta .btn-outline-dark { display: none; }
    .nav-toggle { display: flex; }
    .compare-wrap { grid-template-columns: 1fr; }
    .compare-vs {
        left: 50%;
        top: auto;
        bottom: 50%;
        transform: translate(-50%, 50%);
    }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .section { padding: 56px 0; }
    .info-grid { grid-template-columns: 1fr; }
    .form-panel { padding: 32px 24px; }
    .form-grid { grid-template-columns: 1fr; }
    .form-group.full { grid-column: auto; }
    .form-submit { grid-column: auto; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .hero { padding-top: 40px; }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; }
    .hero-metrics { gap: 24px; justify-content: space-between; }
    .section-header { flex-direction: column; align-items: flex-start; }
    .service-item { padding: 20px; gap: 16px; }
    .service-item .service-arrow { display: none; }
    .metric-card { padding: 24px; }
}
@media (max-width: 480px) {
    .metrics-grid { grid-template-columns: 1fr; }
    .hero-content { padding: 48px 0 40px; }
    .hero h1 { font-size: 2rem; }
    .hero-metrics { flex-direction: column; gap: 16px; }
    .hero-metric { display: flex; align-items: center; gap: 12px; text-align: left; }
    .compare-col { padding: 24px 20px; }
    .float-cta { right: 16px; bottom: 16px; padding: 12px 20px; font-size: 14px; }
}

:root {
    --primary:#374D3C; --primary-dark:#2C3F30; --accent:#C08552; --accent-dark:#A96F42;
    --bg:#FBF9F5; --bg-alt:#F4F1EA; --dark-bg:#1F2A22; --card:#FFFFFF;
    --text:#1E2722; --body:#4A5348; --muted:#8B9186; --disabled:#B7B2A8;
    --border:#E6E1D6; --success:#3D7A57; --danger:#B15B4A;
    --radius-lg:16px; --radius-md:12px; --radius-sm:10px; --radius-pill:999px;
    --shadow-sm:0 1px 2px rgba(0,0,0,0.04); --shadow-hover:0 12px 32px rgba(0,0,0,0.06);
    --transition:all .3s ease-out;
    --font:"PingFang SC","Hiragino Sans GB","Noto Sans SC","Microsoft YaHei",-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--body);line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
ul,ol{list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:var(--radius-pill);font-size:15px;font-weight:600;line-height:1.4;border:1px solid transparent;transition:var(--transition);white-space:nowrap}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);box-shadow:0 8px 24px rgba(55,77,60,.32)}
.btn-outline-dark{border-color:var(--primary);color:var(--primary);background:transparent}
.btn-outline-dark:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark)}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-block{width:100%}
.badge{display:inline-flex;align-items:center;gap:4px;padding:4px 14px;border-radius:999px;background:rgba(192,133,82,.12);color:var(--accent-dark);font-size:13px;font-weight:500;letter-spacing:.02em}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

/* Header */
.header{position:sticky;top:0;z-index:100;background:rgba(251,249,245,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav{position:relative;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px 0}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text);letter-spacing:-.01em;flex-shrink:0}
.logo-icon{width:32px;height:32px;border-radius:9px;background:var(--primary);color:#fff;display:inline-flex;align-items:center;justify-content:center}
.logo:hover .logo-icon{background:var(--primary-dark)}
.nav-links{display:flex;align-items:center;gap:2px;flex:1;justify-content:center}
.nav-link{padding:8px 18px;border-radius:999px;font-size:15px;font-weight:500;color:var(--body);transition:var(--transition)}
.nav-link:hover{color:var(--primary);background:rgba(55,77,60,.06)}
.nav-link.active{color:var(--primary);background:rgba(55,77,60,.1);font-weight:600}
.nav-cta{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;border-radius:10px;border:1px solid var(--border);background:var(--card);align-items:center;padding:0}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:var(--transition)}
.nav-toggle:hover span{background:var(--primary)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Breadcrumb */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:26px 0 8px;font-size:14px;color:var(--muted)}
.breadcrumb a{color:var(--muted);transition:var(--transition)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--disabled)}
.breadcrumb .current{color:var(--body);font-weight:500;max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* Article page */
.article-page{padding:0 0 100px}
.article-header{max-width:860px;margin:26px auto 0;padding:0 0 20px;border-bottom:1px solid var(--border)}
.article-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.article-meta time{font-size:13px;color:var(--muted);letter-spacing:.02em}
.article-header h1{font-size:clamp(1.85rem,3.6vw,3rem);font-weight:700;line-height:1.2;color:var(--text);letter-spacing:-.02em;margin:0}
.article-layout{max-width:860px;margin:0 auto}
.article-body{max-width:720px;margin:36px auto 0;font-size:17px;line-height:1.85;color:var(--body)}
.article-body p{margin-bottom:1.4rem}
.article-body h2{font-size:1.5rem;font-weight:650;color:var(--text);margin:2.2rem 0 1rem;padding-bottom:.5rem;border-bottom:1px solid var(--border);letter-spacing:-.01em}
.article-body h3{font-size:1.25rem;font-weight:600;color:var(--text);margin:1.8rem 0 .8rem}
.article-body h4{font-size:1.05rem;font-weight:600;color:var(--text);margin:1.5rem 0 .6rem}
.article-body ul,.article-body ol{margin:0 0 1.4rem;padding-left:1.5rem}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.5rem}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(55,77,60,.3)}
.article-body a:hover{color:var(--accent);border-color:var(--accent)}
.article-body img{border-radius:var(--radius-lg);margin:1.6rem 0;width:100%;height:auto}
.article-body blockquote{border-left:3px solid var(--accent);background:var(--bg-alt);padding:1.1rem 1.4rem;border-radius:0 var(--radius-md) var(--radius-md) 0;margin:1.6rem 0;color:var(--body)}
.article-body blockquote p{margin:0}
.article-body code{background:var(--bg-alt);padding:2px 8px;border-radius:6px;font-size:.9em;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--accent-dark)}
.article-body pre{background:var(--dark-bg);color:#e8e4dc;padding:1.4rem;border-radius:var(--radius-md);overflow-x:auto;margin:1.6rem 0;font-size:.9rem;line-height:1.7}
.article-body pre code{background:transparent;color:inherit;padding:0;border-radius:0}
.article-body hr{border:none;border-top:1px solid var(--border);margin:2rem 0}
.article-body table{width:100%;border-collapse:collapse;margin:1.6rem 0;font-size:.95rem}
.article-body th,.article-body td{border:1px solid var(--border);padding:.65rem .9rem;text-align:left}
.article-body th{background:var(--bg-alt);font-weight:600;color:var(--text)}

/* Article nav */
.article-nav{max-width:720px;margin:48px auto 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* Related */
.related-section{max-width:1200px;margin:80px auto 0;padding-top:64px;border-top:1px solid var(--border)}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-bottom:36px}
.section-num{font-size:14px;font-weight:500;color:var(--accent);letter-spacing:.08em}
.section-head h2{font-size:clamp(1.5rem,2.4vw,2rem);font-weight:600;color:var(--text);letter-spacing:-.01em}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:var(--transition)}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#d9d0bf}
.related-card img{width:100%;height:190px;object-fit:cover}
.related-card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-card-body h3{font-size:1.15rem;font-weight:600;color:var(--text);line-height:1.35}
.related-card-body p{font-size:14px;color:var(--muted);line-height:1.6}
.related-card-body .badge{align-self:flex-start}

/* Not found */
.not-found{max-width:640px;margin:70px auto;text-align:center;padding:60px 40px;background:var(--card);border:2px dashed var(--border);border-radius:var(--radius-lg)}
.not-found-icon{width:68px;height:68px;border-radius:50%;background:var(--bg-alt);display:flex;align-items:center;justify-content:center;margin:0 auto 22px;color:var(--muted)}
.not-found h1{font-size:1.8rem;font-weight:600;color:var(--text);margin-bottom:12px}
.not-found p{color:var(--muted);margin-bottom:28px}

/* Footer */
.footer{background:var(--dark-bg);color:#c9c4b8;padding:72px 0 0;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr 1fr;gap:48px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-brand .logo-icon{background:rgba(255,255,255,.1)}
.footer-desc{font-size:14px;line-height:1.8;color:#a39d91;max-width:340px}
.footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:.02em}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:#a39d91;transition:var(--transition);width:fit-content}
.footer-links a:hover{color:var(--accent);padding-left:4px}
.footer-contact{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.contact-item{display:flex;align-items:center;gap:10px;font-size:14px;color:#a39d91}
.contact-item svg{color:var(--accent);flex-shrink:0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#7d776b}

/* Responsive */
@media (max-width:1024px){
    .nav{flex-wrap:wrap}
    .nav-toggle{display:flex}
    .nav-links,.nav-cta{display:none;width:100%}
    .nav-open .nav-links{display:flex;flex-direction:column;align-items:stretch;padding:14px 0 6px;border-top:1px solid var(--border);margin-top:4px}
    .nav-open .nav-cta{display:flex;flex-direction:row;padding:10px 0 6px;border-top:1px solid var(--border)}
    .nav-open .nav-links .nav-link{padding:12px 16px;font-size:15px;border-radius:10px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:768px){
    .container{padding:0 20px}
    .related-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr;gap:32px}
    .footer{text-align:left}
    .article-body{font-size:16px}
    .article-nav{flex-direction:column;align-items:stretch}
    .article-nav .btn{width:100%}
    .breadcrumb{padding-top:20px}
    .not-found{padding:40px 24px;margin:50px 0}
}
@media (max-width:520px){
    .container{padding:0 16px}
    .nav{gap:14px}
    .logo{font-size:15px}
    .logo-icon{width:28px;height:28px}
    .btn-sm{padding:7px 14px;font-size:13px}
    .section-head{flex-direction:column;gap:10px}
    .article-header{padding-bottom:16px;margin-top:18px}
    .article-body h2{font-size:1.3rem}
    .article-body{padding:0}
    .footer-bottom{flex-direction:column;align-items:flex-start}
}

:root {
  --primary: #374D3C;
  --primary-dark: #2C3F30;
  --accent: #C08552;
  --accent-dark: #A96F41;
  --bg-page: #FBF9F5;
  --bg-alt: #F4F1EA;
  --bg-dark: #1F2A22;
  --card-bg: #FFFFFF;
  --text-title: #1E2722;
  --text-body: #4A5348;
  --text-muted: #8B9186;
  --text-placeholder: #B7B2A8;
  --border: #E6E1D6;
  --success: #3D7A57;
  --warning: #B15B4A;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.06);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  --section-pad: 96px;
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.25s ease-out;
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-title);
  letter-spacing: 0.01em;
  flex-shrink: 0;
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  flex-shrink: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
  flex: 1;
  justify-content: space-between;
}

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

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-body);
  padding: 8px 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.25s, border-color 0.25s;
}

.nav-link:hover {
  color: var(--primary);
  border-color: var(--accent);
}

.nav-link.active {
  color: var(--primary);
  border-color: var(--primary);
  font-weight: 600;
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  padding: 10px 22px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.25s ease-out, transform 0.25s ease-out, box-shadow 0.25s ease-out, border-color 0.25s;
  line-height: 1.4;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background-color: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  color: #fff;
  box-shadow: 0 6px 16px rgba(55, 77, 60, 0.25);
}

.btn-outline-dark {
  background-color: transparent;
  border-color: var(--border);
  color: var(--text-title);
}

.btn-outline-dark:hover {
  border-color: var(--primary);
  color: var(--primary);
  background-color: rgba(55, 77, 60, 0.04);
}

.btn-accent {
  background-color: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-accent:hover {
  background-color: var(--accent-dark);
  color: #fff;
}

.btn-sm {
  font-size: 0.875rem;
  padding: 8px 18px;
}

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

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-title);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ---------- Page Hero ---------- */
.page-hero {
  background: var(--bg-dark);
  color: #fff;
  padding: 88px 0 64px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

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

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s;
}

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

.breadcrumb-sep {
  opacity: 0.5;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: #fff;
  max-width: 760px;
  margin-bottom: 18px;
}

.page-hero .hero-sub {
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.75);
  max-width: 640px;
  line-height: 1.8;
}

/* ---------- Section ---------- */
.section {
  padding: var(--section-pad) 0;
}

.section-alt {
  background-color: var(--bg-alt);
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 40px;
  gap: 24px;
}

.section-title-wrap {
  max-width: 680px;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 600;
  color: var(--text-title);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.section-title .num {
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--accent);
  letter-spacing: 0.06em;
  margin-right: 8px;
  vertical-align: 2px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ---------- Tag Nav ---------- */
.tag-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-body);
  cursor: pointer;
  transition: all 0.25s ease-out;
}

.tag:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(55, 77, 60, 0.04);
}

.tag.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ---------- Featured Index ---------- */
.index-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.feature-text h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 600;
  color: var(--text-title);
  line-height: 1.3;
  margin-bottom: 16px;
}

.feature-text p {
  color: var(--text-body);
  line-height: 1.8;
  font-size: 1rem;
  margin-bottom: 12px;
}

.feature-list {
  list-style: none;
  margin-top: 20px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9375rem;
}

.feature-list li:last-child {
  border-bottom: none;
}

.feature-list svg {
  flex-shrink: 0;
  margin-top: 4px;
  color: var(--accent);
}

.feature-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 340px;
}

/* ---------- Info Guide ---------- */
.guide-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.guide-step {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: transform 0.3s ease-out, box-shadow 0.3s ease-out;
}

.guide-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.step-num {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.guide-step h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 10px;
}

.guide-step p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ---------- Compare ---------- */
.compare-wrap {
  display: grid;
  grid-template-columns: 1fr 120px 1fr;
  gap: 0;
  align-items: stretch;
}

.compare-col {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
}

.compare-col h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 8px;
}

.compare-col .sub {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.compare-list {
  list-style: none;
  margin-bottom: 24px;
}

.compare-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  font-size: 0.9375rem;
  border-bottom: 1px dashed var(--border);
}

.compare-list li:last-child {
  border-bottom: none;
}

.compare-list svg {
  flex-shrink: 0;
  margin-top: 5px;
  color: var(--success);
}

.compare-list.dim svg {
  color: var(--text-placeholder);
}

.compare-middle {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px 0;
}

.compare-badge {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  box-shadow: 0 6px 16px rgba(55, 77, 60, 0.25);
}

.compare-line {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.25s;
}

.faq-item.active {
  border-color: var(--primary);
  background: rgba(251, 249, 245, 0.8);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-title);
  background: none;
  border: none;
  font-family: var(--font-sans);
  transition: background-color 0.25s;
}

.faq-question:hover {
  background: rgba(55, 77, 60, 0.03);
}

.faq-q-mark {
  color: var(--accent);
  font-weight: 700;
  margin-right: 4px;
}

.faq-toggle {
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--text-muted);
  transition: transform 0.3s ease-out;
  flex-shrink: 0;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 0.9375rem;
  color: var(--text-body);
  line-height: 1.8;
}

/* ---------- CTA Form ---------- */
.cta-section {
  background: var(--bg-dark);
  color: #fff;
}

.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 56px;
  align-items: center;
}

.cta-text h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 16px;
}

.cta-text p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 1rem;
  line-height: 1.8;
}

.cta-points {
  list-style: none;
  margin-top: 24px;
}

.cta-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.85);
}

.cta-points svg {
  color: var(--accent);
  flex-shrink: 0;
}

.form-panel {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.2);
}

.form-panel h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-title);
  margin-bottom: 6px;
}

.form-panel .form-sub {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

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

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-body);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--text-title);
  background: #fff;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(55, 77, 60, 0.08);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.form-status {
  display: none;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  margin-top: 12px;
}

.form-status.success {
  display: block;
  background: rgba(61, 122, 87, 0.08);
  border: 1px solid var(--success);
  color: var(--success);
}

.form-status.error {
  display: block;
  background: rgba(177, 91, 74, 0.08);
  border: 1px solid var(--warning);
  color: var(--warning);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.0625rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 14px;
}

.footer-desc {
  font-size: 0.875rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.55);
  max-width: 300px;
}

.footer h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.875rem;
  transition: color 0.25s;
}

.footer-links a:hover {
  color: #fff;
}

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

.contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.55);
}

.contact-item svg {
  color: var(--accent);
  flex-shrink: 0;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .nav-links {
    gap: 16px;
  }
  .nav-links .nav-link {
    font-size: 0.875rem;
  }
  .nav-cta {
    gap: 8px;
  }
  .nav-cta .btn {
    padding: 8px 14px;
    font-size: 0.8125rem;
  }
  .compare-wrap {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .compare-middle {
    flex-direction: row;
    gap: 12px;
    padding: 4px 0;
  }
  .compare-line {
    width: 40px;
    height: 1px;
  }
  .cta-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-pad: 64px;
  }
  .header .container {
    height: 64px;
  }
  .nav {
    gap: 12px;
  }
  .nav-links {
    position: fixed;
    top: 64px;
    right: 0;
    width: 260px;
    height: calc(100vh - 64px);
    background: var(--card-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: 32px 24px;
    gap: 20px;
    transform: translateX(100%);
    transition: transform 0.35s ease-out;
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.08);
    margin: 0;
    z-index: 99;
    border-left: 1px solid var(--border);
  }
  .nav-links.open {
    transform: translateX(0);
  }
  .nav-links .nav-link {
    font-size: 1rem;
    width: 100%;
  }
  .nav-cta {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
  .page-hero {
    padding: 64px 0 48px;
  }
  .page-hero h1 {
    font-size: 1.8rem;
  }
  .index-feature {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .guide-steps {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

@media (max-width: 520px) {
  :root {
    --section-pad: 48px;
  }
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }
  .logo {
    font-size: 0.9375rem;
  }
  .logo-icon {
    width: 26px;
    height: 26px;
  }
  .page-hero h1 {
    font-size: 1.5rem;
  }
  .section-title {
    font-size: 1.4rem;
  }
  .guide-step {
    padding: 24px 20px;
  }
  .compare-col {
    padding: 24px 20px;
  }
  .form-panel {
    padding: 24px 20px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}