/* ========== 设备租赁系统 - 海军蓝/金色主题 ========== */
:root {
    --primary: #1a3a5c;
    --primary-light: #255480;
    --primary-dark: #0e2138;
    --accent: #e8a817;
    --accent-light: #f5c84e;
    --accent-dark: #b8860b;
    --dark: #0f172a;
    --light: #f7f9fc;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --white: #ffffff;
    --border: #e2e8f0;
    --gradient-primary: linear-gradient(135deg, #1a3a5c 0%, #255480 100%);
    --gradient-accent: linear-gradient(135deg, #e8a817 0%, #f5c84e 100%);
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(26,58,92,0.12);
    --radius: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
    --max-width: 1200px;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --green: #16a34a;
    --red: #dc2626;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--font); background: var(--light); color: var(--dark);
    line-height: 1.6; overflow-x: hidden;
}

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

/* ===== 头部 ===== */
.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(255,255,255,0.95); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border); transition: var(--transition);
    padding: 12px 0;
}
.header.scrolled { padding: 6px 0; box-shadow: var(--shadow-md); }
.header .container { display: flex; align-items: center; justify-content: space-between; }

.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-mark {
    width: 38px; height: 38px; border-radius: var(--radius);
    background: var(--gradient-primary); color: #fff; font-weight: 800;
    display: flex; align-items: center; justify-content: center; font-size: 17px;
    box-shadow: 0 2px 8px rgba(26,58,92,0.3);
}
.logo-text {
    font-size: 18px; font-weight: 700; color: var(--primary-dark);
    letter-spacing: -0.5px;
}
.logo-sub {
    font-size: 11px; color: var(--accent-dark); font-weight: 500;
    padding: 2px 8px; background: rgba(232,168,23,0.1); border-radius: 20px;
}

.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a {
    color: var(--gray); text-decoration: none; font-size: 14px; font-weight: 500;
    transition: var(--transition);
}
.nav-links a:hover { color: var(--primary); }

.btn-nav {
    padding: 9px 22px; border-radius: 6px; font-size: 14px; font-weight: 600;
    background: var(--gradient-primary); color: #fff; text-decoration: none;
    border: none; cursor: pointer; transition: var(--transition);
}
.btn-nav:hover { background: var(--primary-light); transform: translateY(-1px); }

.menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; }
.menu-toggle span { width: 24px; height: 2px; background: var(--dark); transition: var(--transition); }

/* ===== 英雄区 ===== */
.hero {
    position: relative; min-height: 100vh; display: flex; align-items: center;
    background: linear-gradient(180deg, #eff3f8 0%, #f7f9fc 100%);
    overflow: hidden; padding: 130px 0 80px;
}
.hero-pattern {
    position: absolute; inset: 0; opacity: 0.025;
    background-image:
        radial-gradient(circle, #1a3a5c 1px, transparent 1px);
    background-size: 44px 44px;
}
.hero-glow {
    position: absolute; width: 500px; height: 500px; border-radius: 50%;
    top: -100px; right: -100px;
    background: radial-gradient(circle, rgba(232,168,23,0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero .container {
    position: relative; z-index: 2; display: grid;
    grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}

.hero-content { max-width: 540px; }
.hero-pill {
    display: inline-block; padding: 5px 14px;
    background: rgba(26,58,92,0.06); border: 1px solid rgba(26,58,92,0.1);
    border-radius: 6px; font-size: 13px; color: var(--primary);
    font-weight: 600; margin-bottom: 20px; letter-spacing: 1px;
}
.hero h1 { font-size: 48px; font-weight: 800; line-height: 1.2; margin-bottom: 16px; color: var(--dark); }
.hero h1 .gradient-text {
    background: var(--gradient-accent);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-desc { font-size: 16px; color: var(--gray); line-height: 1.7; margin-bottom: 32px; max-width: 480px; }

.hero-btns { display: flex; gap: 16px; margin-bottom: 40px; }
.btn-primary {
    padding: 14px 30px; border-radius: 8px; font-size: 15px; font-weight: 600;
    background: var(--gradient-primary); color: #fff; text-decoration: none;
    border: none; cursor: pointer; transition: var(--transition);
    box-shadow: 0 4px 15px rgba(26,58,92,0.25);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(26,58,92,0.35); }
.btn-primary.light { background: var(--gradient-accent); color: var(--primary-dark); box-shadow: 0 4px 15px rgba(232,168,23,0.35); }
.btn-primary.light:hover { box-shadow: 0 6px 20px rgba(232,168,23,0.5); }
.btn-outline {
    padding: 14px 30px; border-radius: 8px; font-size: 15px; font-weight: 600;
    background: #fff; color: var(--primary); text-decoration: none;
    border: 2px solid var(--border); cursor: pointer; transition: var(--transition);
}
.btn-outline:hover { border-color: var(--primary); background: #f8fafc; }

.hero-trust { display: flex; gap: 32px; }
.trust-item { display: flex; align-items: center; gap: 10px; }
.trust-icon { font-size: 22px; }
.trust-num { font-size: 18px; font-weight: 700; color: var(--dark); }
.trust-label { font-size: 12px; color: var(--gray-light); }

/* ===== 英雄模拟展示 ===== */
.hero-mock {
    display: flex; flex-direction: column; gap: 16px;
}
.mock-card {
    background: #fff; border-radius: var(--radius-md); padding: 24px;
    border: 1px solid var(--border); box-shadow: var(--shadow-md);
}
.mock-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 16px; font-weight: 600; font-size: 15px;
}
.mock-badge {
    font-size: 13px; color: var(--green); background: #f0fdf4;
    padding: 3px 10px; border-radius: 20px; font-weight: 600;
}
.mock-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.mock-stat {
    background: #f8fafc; border-radius: 8px; padding: 14px 10px;
    text-align: center; border: 1px solid #e2e8f0;
}
.mock-stat-num { font-size: 22px; font-weight: 700; color: var(--primary); }
.mock-stat-lbl { font-size: 11px; color: var(--gray); margin-top: 2px; }

.mock-card.small { padding: 18px; }
.mock-row {
    display: flex; justify-content: space-between; padding: 10px 0;
    border-bottom: 1px solid #f1f5f9; font-size: 14px;
}
.mock-row:last-child { border-bottom: none; }
.mock-label { color: var(--gray); font-size: 13px; }
.mock-val { font-weight: 600; }
.mock-val.green { color: var(--green); }
.mock-val.blue { color: var(--primary); }
.mock-val.gold { color: var(--accent); }
.mock-val.red { color: var(--red); }

/* ===== 客户Logo ===== */
.clients { background: #fff; border-bottom: 1px solid var(--border); padding: 28px 0; }
.clients-title { text-align: center; font-size: 13px; color: var(--gray-light); margin-bottom: 16px; text-transform: uppercase; letter-spacing: 2px; }
.clients-row { display: flex; justify-content: center; gap: 42px; flex-wrap: wrap; }
.client-logo {
    font-size: 15px; font-weight: 500; color: var(--gray);
    display: flex; align-items: center; gap: 6px;
}
.client-logo .cl-icon { font-size: 20px; }

/* ===== 章节通用 ===== */
.section { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-eyebrow {
    display: inline-block; font-size: 12px; font-weight: 600; color: var(--primary);
    text-transform: uppercase; letter-spacing: 2px; margin-bottom: 12px;
}
.section-title { font-size: 36px; font-weight: 800; color: var(--dark); margin-bottom: 12px; }
.section-subtitle { font-size: 16px; color: var(--gray); max-width: 540px; margin: 0 auto; }

/* ===== 功能卡片 ===== */
.features { background: #fff; }
.features-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }

.feature-card {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md);
    padding: 32px 28px; display: flex; gap: 20px; transition: var(--transition); cursor: default;
}
.feature-card:hover { border-color: var(--accent); box-shadow: var(--shadow-md); transform: translateY(-1px); }
.fc-icon-wrap {
    width: 56px; height: 56px; min-width: 56px; border-radius: 14px;
    background: #f1f5f9; display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
}
.feature-card:hover .fc-icon-wrap {
    background: rgba(232,168,23,0.1);
}
.fc-icon { font-size: 26px; }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; color: var(--dark); }
.feature-card p { font-size: 14px; color: var(--gray); line-height: 1.65; }

/* ===== 预览 ===== */
.preview { background: #eef2f7; }
.preview-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }

.preview-item { text-align: center; }
.pv-window {
    background: #fff; border-radius: var(--radius-md); overflow: hidden;
    border: 1px solid var(--border); box-shadow: var(--shadow); margin-bottom: 14px;
}
.pv-topbar {
    background: #f1f5f9; padding: 10px 14px; display: flex; gap: 6px; align-items: center;
    border-bottom: 1px solid var(--border);
}
.pv-bar-dot { width: 8px; height: 8px; border-radius: 50%; background: #cbd5e1; }
.pv-bar-title { font-size: 12px; color: var(--gray); margin-left: auto; }
.pv-body { padding: 20px; }
.pv-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px; }
.pv-stat {
    background: #f8fafc; border-radius: 8px; padding: 14px; text-align: center; border: 1px solid #e2e8f0;
}
.pv-stat-num { font-size: 18px; font-weight: 700; color: var(--primary); }
.pv-stat-lbl { font-size: 11px; color: var(--gray); }
.pv-bars { display: flex; align-items: flex-end; gap: 6px; height: 60px; }
.pv-bar { flex: 1; background: var(--gradient-primary); border-radius: 3px 3px 0 0; }
.pv-bar.accent { background: var(--gradient-accent); }
.pv-bar:nth-child(odd) { background: var(--gradient-primary); }
.pv-bar:nth-child(even) { background: var(--gradient-accent); }

.pv-flow { display: flex; align-items: center; gap: 4px; margin-bottom: 16px; flex-wrap: wrap; }
.pv-flow-step {
    padding: 6px 10px; border-radius: 6px; font-size: 11px; font-weight: 500;
    background: #f1f5f9; color: var(--gray);
}
.pv-flow-step.active { background: var(--accent); color: var(--primary-dark); font-weight: 700; }
.pv-flow-step.done { background: var(--green); color: #fff; }
.pv-flow-arrow { color: var(--gray-light); font-weight: bold; }
.pv-list { display: flex; flex-direction: column; gap: 8px; }
.pv-list-item {
    display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--gray);
    padding: 8px; background: #f8fafc; border-radius: 6px;
}
.pv-dot-status { width: 8px; height: 8px; border-radius: 50%; }
.pv-dot-status.green { background: var(--green); }
.pv-dot-status.gold { background: var(--accent); }
.pv-dot-status.blue { background: var(--primary-light); }
.pv-dot-status.red { background: var(--red); }
.pv-table { width: 100%; }
.pv-table-row {
    display: flex; justify-content: space-between; padding: 8px 0;
    border-bottom: 1px solid #f1f5f9; font-size: 13px;
}
.pv-table-row.head { font-weight: 600; color: var(--dark); border-bottom: 2px solid #e2e8f0; }
.pv-table-row .green { color: var(--green); font-weight: 600; }
.pv-table-row .red { color: var(--red); font-weight: 600; }
.pv-label { font-size: 16px; font-weight: 600; color: var(--dark); }
.pv-desc { font-size: 13px; color: var(--gray-light); }

/* ===== 功能模块 ===== */
.modules { background: #fff; }
.modules-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

.module-item {
    padding: 26px 20px; text-align: center; border-radius: var(--radius-md);
    border: 1px solid var(--border); transition: var(--transition); cursor: default;
    background: #fff;
}
.module-item:hover { border-color: var(--accent); box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.mod-icon { font-size: 36px; margin-bottom: 10px; }
.mod-name { font-size: 15px; font-weight: 600; color: var(--dark); }

/* ===== 流程 ===== */
.steps { background: #eef2f7; }
.steps-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; position: relative; }
.steps-list::before {
    content: ''; position: absolute; top: 28px; left: calc(16.7% + 28px); right: calc(16.7% + 28px);
    height: 2px; background: var(--border); z-index: 0;
    display: none;
}
@media (min-width: 769px) {
    .steps-list::before { display: block; }
}

.step-item {
    background: #fff; border-radius: var(--radius-md); padding: 40px 28px 32px;
    text-align: center; border: 1px solid var(--border); box-shadow: var(--shadow);
    transition: var(--transition); position: relative; z-index: 1;
}
.step-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.step-badge {
    display: inline-flex; width: 56px; height: 56px; border-radius: 50%;
    background: var(--gradient-primary); color: #fff; font-size: 20px;
    font-weight: 800; align-items: center; justify-content: center;
    margin-bottom: 20px; box-shadow: 0 4px 15px rgba(26,58,92,0.25);
}
.step-item:nth-child(2) .step-badge { background: var(--gradient-accent); color: var(--primary-dark); }
.step-item:nth-child(3) .step-badge { background: linear-gradient(135deg, #16a34a, #22c55e); }
.step-item h4 { font-size: 19px; font-weight: 700; margin-bottom: 8px; color: var(--dark); }
.step-item p { font-size: 14px; color: var(--gray); margin-bottom: 16px; }
.step-features { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.step-features span {
    padding: 4px 12px; background: #f1f5f9; border-radius: 20px;
    font-size: 12px; color: var(--primary); font-weight: 500;
}

/* ===== 安全保障 ===== */
.security { background: #fff; }
.security-banner {
    background: var(--gradient-primary); border-radius: var(--radius-lg); padding: 48px;
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 24px;
}
.sec-left h3 { color: #fff; font-size: 22px; margin-bottom: 8px; }
.sec-left p { color: rgba(255,255,255,0.7); font-size: 14px; }

/* ===== 关于 ===== */
.about { background: #f7f9fc; }
.about-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 40px; }
.about-info h2 { font-size: 28px; font-weight: 800; margin-bottom: 16px; color: var(--dark); }
.about-info p { color: var(--gray); line-height: 1.8; margin-bottom: 20px; }
.about-tags { display: flex; gap: 16px; flex-wrap: wrap; }
.about-tags span { font-size: 13px; color: var(--primary); font-weight: 500; }

.contact-card {
    background: var(--gradient-primary); border-radius: var(--radius-md);
    padding: 32px; color: #fff; text-align: center;
}
.contact-card h4 { font-size: 18px; margin-bottom: 12px; }
.contact-card p { margin-bottom: 6px; opacity: 0.9; }
.contact-card .btn-primary { margin-top: 16px; display: inline-block; }

/* ===== 底部 ===== */
.footer { background: var(--dark); color: #cbd5e1; padding: 60px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-col.brand .logo-mark { margin-bottom: 12px; }
.footer-col.brand h4 { color: #fff; font-size: 16px; margin-bottom: 6px; }
.footer-col.brand p { font-size: 13px; color: #94a3b8; }
.footer-col h4 { color: #fff; font-size: 14px; font-weight: 600; margin-bottom: 16px; }
.footer-col a {
    display: block; color: #94a3b8; text-decoration: none; font-size: 13px;
    padding: 4px 0; transition: var(--transition);
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
    display: flex; justify-content: space-between; align-items: center;
    padding-top: 24px; border-top: 1px solid #1e293b; font-size: 13px; color: #64748b;
}
.footer-bottom-links { display: flex; gap: 24px; }
.footer-bottom-links a { color: #64748b; text-decoration: none; }
.footer-bottom-links a:hover { color: var(--accent); }

/* ===== 动画 ===== */
.fade-up { opacity: 0; transform: translateY(30px); transition: all 0.6s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-in { opacity: 0; transition: opacity 0.6s ease; }
.fade-in.visible { opacity: 1; }
.scale-in { opacity: 0; transform: scale(0.96); transition: all 0.5s ease; }
.scale-in.visible { opacity: 1; transform: scale(1); }
.slide-left { opacity: 0; transform: translateX(-30px); transition: all 0.6s ease; }
.slide-left.visible { opacity: 1; transform: translateX(0); }
.slide-right { opacity: 0; transform: translateX(30px); transition: all 0.6s ease; }
.slide-right.visible { opacity: 1; transform: translateX(0); }

.stagger-item { opacity: 0; transform: translateY(20px); }
.stagger-item.visible { opacity: 1; transform: translateY(0); }
.stagger-item:nth-child(1) { transition: all 0.45s 0.03s ease; }
.stagger-item:nth-child(2) { transition: all 0.45s 0.08s ease; }
.stagger-item:nth-child(3) { transition: all 0.45s 0.13s ease; }
.stagger-item:nth-child(4) { transition: all 0.45s 0.18s ease; }
.stagger-item:nth-child(5) { transition: all 0.45s 0.23s ease; }
.stagger-item:nth-child(6) { transition: all 0.45s 0.28s ease; }
.stagger-item:nth-child(7) { transition: all 0.45s 0.33s ease; }
.stagger-item:nth-child(8) { transition: all 0.45s 0.38s ease; }
.stagger-item:nth-child(9) { transition: all 0.45s 0.43s ease; }
.stagger-item:nth-child(10) { transition: all 0.45s 0.48s ease; }
.stagger-item:nth-child(11) { transition: all 0.45s 0.53s ease; }
.stagger-item:nth-child(12) { transition: all 0.45s 0.58s ease; }

/* ===== 响应式 ===== */
@media (max-width: 992px) {
    .hero .container { grid-template-columns: 1fr; text-align: center; }
    .hero-content { max-width: 100%; }
    .hero h1 { font-size: 38px; }
    .hero-desc { max-width: 100%; }
    .hero-btns { justify-content: center; }
    .hero-trust { justify-content: center; }
    .hero-mock { order: -1; margin-bottom: 32px; max-width: 500px; margin-inline: auto; }
    .features-grid { grid-template-columns: 1fr 1fr; }
    .preview-grid { grid-template-columns: 1fr 1fr; }
    .about-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0;
        background: #fff; flex-direction: column; padding: 20px; gap: 14px; box-shadow: var(--shadow-md); }
    .nav-links.active { display: flex; }
    .menu-toggle { display: flex; }
    .hero h1 { font-size: 30px; }
    .hero-trust { flex-wrap: wrap; gap: 16px; }
    .features-grid { grid-template-columns: 1fr; }
    .preview-grid { grid-template-columns: 1fr; }
    .modules-grid { grid-template-columns: repeat(2, 1fr); }
    .steps-list { grid-template-columns: 1fr; }
    .steps-list::before { display: none; }
    .security-banner { flex-direction: column; text-align: center; }
    .section-title { font-size: 28px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    .client-logo { font-size: 13px; }
}