/* =============================================
   查重服务独立站 - 亮色主题设计系统
   清新专业 · 蓝白配色 · 现代卡片风格
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
    --bg-primary: #f0f4f8;
    --bg-white: #ffffff;
    --bg-card: #ffffff;
    --bg-section: #f7f9fc;
    --border-light: #e2e8f0;
    --border-card: rgba(0, 0, 0, 0.06);

    --accent-blue: #2563eb;
    --accent-blue-light: #3b82f6;
    --accent-purple: #7c3aed;
    --accent-green: #059669;
    --accent-orange: #d97706;
    --accent-red: #dc2626;
    --accent-cyan: #0891b2;

    --gradient-blue: linear-gradient(135deg, #2563eb, #3b82f6);
    --gradient-purple: linear-gradient(135deg, #7c3aed, #a78bfa);
    --gradient-green: linear-gradient(135deg, #059669, #34d399);
    --gradient-hero: linear-gradient(135deg, #2563eb 0%, #1d4ed8 50%, #7c3aed 100%);

    --text-dark: #1e293b;
    --text-primary: #334155;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;

    --font-body: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: var(--transition);
}

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

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

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

/* --- 卡片 --- */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.glass-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

/* --- 导航 --- */
.check-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition);
}

.check-nav.scrolled {
    background: rgba(255, 255, 255, 0.97);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}

.check-nav .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    padding: 0 32px;
    max-width: 1400px;
    margin: 0 auto;
}

.check-nav .nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.check-nav .nav-brand .brand-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-blue);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: #fff;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.check-nav .nav-brand .brand-text {
    display: flex;
    flex-direction: column;
}

.check-nav .nav-brand .brand-name {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: 0.5px;
}

.check-nav .nav-brand .brand-slogan {
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 1.5px;
}

.check-nav .nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
}

.check-nav .nav-links a {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 8px 16px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
}

.check-nav .nav-links a:hover {
    color: var(--accent-blue);
    background: rgba(37, 99, 235, 0.05);
}

.check-nav .nav-links a.active {
    color: var(--accent-blue);
    font-weight: 600;
    background: rgba(37, 99, 235, 0.06);
}

.check-nav .nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 18px;
    height: 2px;
    background: var(--accent-blue);
    border-radius: 2px;
}

.check-nav .nav-links a i {
    font-size: 13px;
    opacity: 0.65;
}

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

.nav-user-btn {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 8px 20px;
    font-size: 13px;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.nav-user-btn:not(.outline) {
    background: var(--gradient-blue);
    color: #fff;
    box-shadow: 0 3px 12px rgba(37, 99, 235, 0.25);
}

.nav-user-btn:not(.outline):hover {
    transform: translateY(-1px);
    box-shadow: 0 5px 20px rgba(37, 99, 235, 0.35);
    color: #fff;
}

.nav-user-btn.outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-light);
    box-shadow: none;
}

.nav-user-btn.outline:hover {
    color: var(--accent-blue);
    border-color: var(--accent-blue);
    background: rgba(37, 99, 235, 0.04);
}

.nav-user-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--gradient-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 13px;
}

.nav-user-dropdown {
    position: relative;
    cursor: pointer;
}

.nav-user-dropdown .dropdown-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    min-width: 200px;
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: var(--transition);
    box-shadow: var(--shadow-xl);
}

.nav-user-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-user-dropdown .dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    color: var(--text-secondary);
    font-size: 13px;
    border-radius: 6px;
    transition: var(--transition);
}

.nav-user-dropdown .dropdown-menu a:hover {
    color: var(--accent-blue);
    background: rgba(37, 99, 235, 0.05);
}

.nav-user-dropdown .dropdown-menu a i {
    width: 18px;
    text-align: center;
    opacity: 0.55;
}

.nav-user-dropdown .dropdown-divider {
    height: 1px;
    background: var(--border-light);
    margin: 4px 0;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 22px;
    cursor: pointer;
    padding: 8px;
}

/* --- Hero --- */
.hero-section {
    position: relative;
    min-height: 92vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    padding-top: 68px;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -15%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    animation: heroGlow 10s ease-in-out infinite alternate;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
    animation: heroGlow 12s ease-in-out infinite alternate-reverse;
}

@keyframes heroGlow {
    0% {
        transform: translate(0, 0) scale(1);
    }

    100% {
        transform: translate(30px, -20px) scale(1.08);
    }
}

.hero-grid {
    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: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 860px;
    padding: 0 24px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    color: #fff;
    margin-bottom: 28px;
    animation: fadeInUp 0.8s ease;
}

.hero-badge i {
    font-size: 11px;
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.4;
    }
}

.hero-title {
    font-size: clamp(34px, 5.5vw, 58px);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 22px;
    color: #fff;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-title .gradient-text {
    background: linear-gradient(135deg, #fff, #bfdbfe, #fff);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 5s linear infinite;
}

@keyframes shimmer {
    0% {
        background-position: 0% center;
    }

    100% {
        background-position: 200% center;
    }
}

.hero-desc {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto 42px;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.3s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(25px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- 按钮 --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 13px 30px;
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-body);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-blue);
    color: #fff;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(37, 99, 235, 0.4);
    color: #fff;
}

.btn-secondary {
    background: #fff;
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-hero-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
}

.btn-hero-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    color: #fff;
    transform: translateY(-2px);
}

.btn-purple {
    background: var(--gradient-purple);
    color: #fff;
    box-shadow: 0 4px 14px rgba(124, 58, 237, 0.3);
}

.btn-purple:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(124, 58, 237, 0.4);
    color: #fff;
}

.btn-green {
    background: var(--gradient-green);
    color: #fff;
    box-shadow: 0 4px 14px rgba(5, 150, 105, 0.3);
}

.btn-green:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(5, 150, 105, 0.4);
    color: #fff;
}

.btn-lg {
    padding: 15px 36px;
    font-size: 15px;
}

.btn-sm {
    padding: 9px 20px;
    font-size: 13px;
}

/* --- 服务区域 --- */
.services-section {
    position: relative;
    padding: 100px 0;
    background: var(--bg-white);
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-blue);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 12px;
}

.section-label::before,
.section-label::after {
    content: '';
    width: 28px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-blue));
}

.section-label::after {
    background: linear-gradient(90deg, var(--accent-blue), transparent);
}

.section-title {
    font-size: clamp(26px, 3.5vw, 38px);
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 14px;
    line-height: 1.3;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto;
}

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

.service-card {
    position: relative;
    padding: 36px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
    box-shadow: var(--shadow-sm);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--card-accent);
    opacity: 0;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    color: inherit;
}

.service-card:hover::before {
    opacity: 1;
}

.service-card.card-cyan {
    --card-accent: var(--gradient-blue);
}

.service-card.card-purple {
    --card-accent: var(--gradient-purple);
}

.service-card.card-green {
    --card-accent: var(--gradient-green);
}

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
}

.service-icon.icon-cyan {
    background: rgba(37, 99, 235, 0.08);
    color: var(--accent-blue);
}

.service-icon.icon-purple {
    background: rgba(124, 58, 237, 0.08);
    color: var(--accent-purple);
}

.service-icon.icon-green {
    background: rgba(5, 150, 105, 0.08);
    color: var(--accent-green);
}

.service-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.service-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 18px;
}

.service-card .card-features {
    list-style: none;
    padding: 0;
    margin-bottom: 24px;
}

.service-card .card-features li {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: 13px;
    color: var(--text-secondary);
    padding: 5px 0;
}

.service-card .card-features li i {
    color: var(--accent-green);
    font-size: 11px;
}

.service-card .card-action {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-blue);
    transition: var(--transition);
}

.service-card:hover .card-action {
    gap: 12px;
}

/* --- 流程 --- */
.process-section {
    padding: 100px 0;
    background: var(--bg-section);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 36px;
    left: 16%;
    right: 16%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--border-light), var(--accent-blue), var(--border-light), transparent);
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 2;
}

.step-number {
    width: 72px;
    height: 72px;
    margin: 0 auto 18px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 24px;
    font-weight: 700;
    color: var(--accent-blue);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.process-step:hover .step-number {
    border-color: var(--accent-blue);
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.15);
    transform: scale(1.08);
}

.process-step h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.process-step p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* --- 统计 --- */
.stats-section {
    padding: 80px 0;
    background: var(--bg-white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.stat-item {
    text-align: center;
    padding: 36px 16px;
    background: var(--bg-section);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-card);
}

.stat-number {
    font-family: var(--font-mono);
    font-size: 38px;
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: 6px;
    line-height: 1;
}

.stat-number span {
    font-size: 18px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
}

/* --- 服务页通用 --- */
.page-section {
    padding-top: 110px;
    padding-bottom: 80px;
    min-height: 100vh;
}

.page-hero {
    text-align: center;
    padding: 40px 0;
    margin-bottom: 40px;
    position: relative;
}

.page-hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-blue);
    border-radius: 2px;
}

.page-hero h1 {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.page-hero p {
    font-size: 15px;
    color: var(--text-secondary);
}

/* --- 上传区 --- */
.upload-zone {
    border: 2px dashed var(--border-light);
    border-radius: var(--radius-lg);
    padding: 52px 36px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    background: var(--bg-section);
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent-blue);
    background: rgba(37, 99, 235, 0.03);
}

.upload-zone .upload-icon {
    font-size: 48px;
    color: var(--accent-blue);
    margin-bottom: 16px;
    opacity: 0.5;
    transition: var(--transition);
}

.upload-zone:hover .upload-icon {
    opacity: 1;
    transform: translateY(-4px);
}

.upload-zone h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.upload-zone p {
    font-size: 13px;
    color: var(--text-muted);
}

.upload-zone input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

/* --- 选项卡片 --- */
.option-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-bottom: 28px;
}

.option-card {
    position: relative;
    padding: 22px 18px;
    background: var(--bg-card);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.option-card:hover {
    border-color: #93c5fd;
    box-shadow: var(--shadow-md);
}

.option-card.selected {
    border-color: var(--accent-blue);
    background: rgba(37, 99, 235, 0.03);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.option-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.option-card .option-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.option-card .option-price {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--accent-blue);
}

.option-card .option-desc {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 5px;
}

/* --- 文本域 --- */
.text-input-area {
    width: 100%;
    min-height: 240px;
    padding: 20px;
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.8;
    resize: vertical;
    transition: var(--transition);
}

.text-input-area:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.text-input-area::placeholder {
    color: var(--text-muted);
}

/* --- 表单 --- */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    padding: 11px 16px;
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 14px;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* --- 价格面板 --- */
.price-panel {
    padding: 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.price-panel .price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    font-size: 14px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--bg-section);
}

.price-panel .price-row:last-child {
    border-bottom: none;
    padding-top: 14px;
}

.price-panel .price-total {
    font-size: 26px;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--accent-blue);
}

/* --- 订单列表 --- */
.order-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.order-item {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    gap: 18px;
    align-items: center;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.order-item:hover {
    box-shadow: var(--shadow-md);
}

.order-type-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.order-info h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 3px;
}

.order-info p {
    font-size: 13px;
    color: var(--text-muted);
}

.order-status {
    padding: 5px 14px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
}

.status-pending {
    background: #fef3c7;
    color: #92400e;
}

.status-paid {
    background: #dbeafe;
    color: #1e40af;
}

.status-processing {
    background: #ede9fe;
    color: #5b21b6;
}

.status-completed {
    background: #d1fae5;
    color: #065f46;
}

.status-failed {
    background: #fee2e2;
    color: #991b1b;
}

/* --- Tab --- */
.tab-nav {
    display: flex;
    gap: 0;
    padding: 4px;
    background: var(--bg-section);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-sm);
    margin-bottom: 28px;
}

.tab-btn {
    flex: 1;
    padding: 10px 18px;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--text-muted);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn.active {
    background: #fff;
    color: var(--accent-blue);
    box-shadow: var(--shadow-sm);
    font-weight: 600;
}

.tab-btn:hover:not(.active) {
    color: var(--text-primary);
}

/* --- 页脚 --- */
.check-footer {
    margin-top: auto;
    padding: 56px 0 24px;
    background: var(--text-dark);
    color: rgba(255, 255, 255, 0.7);
    border-top: 1px solid var(--border-light);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 36px;
    margin-bottom: 36px;
}

.footer-brand p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.8;
    margin-top: 14px;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 16px;
    color: #fff;
}

.footer-col ul {
    list-style: none;
    padding: 0;
}

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul li a {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: #fff;
}

.footer-bottom {
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.35);
}

/* --- 提示 --- */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
}

.alert-info {
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    color: #1e40af;
}

.alert-success {
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
    color: #065f46;
}

.alert-warning {
    background: #fffbeb;
    border: 1px solid #fde68a;
    color: #92400e;
}

.alert-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

/* --- 空状态 --- */
.empty-state {
    text-align: center;
    padding: 72px 20px;
}

.empty-state i {
    font-size: 56px;
    color: var(--text-muted);
    opacity: 0.25;
    margin-bottom: 18px;
}

.empty-state h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.empty-state p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

/* --- 字数 --- */
.word-counter {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-muted);
    text-align: right;
    padding: 6px 0;
}

.word-counter .count {
    color: var(--accent-blue);
    font-weight: 600;
}

/* --- 粒子 --- */
.particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat linear infinite;
}

@keyframes particleFloat {
    0% {
        opacity: 0;
        transform: translateY(100vh) scale(0);
    }

    10% {
        opacity: 0.5;
    }

    90% {
        opacity: 0.5;
    }

    100% {
        opacity: 0;
        transform: translateY(-20px) scale(1);
    }
}

/* --- 进度条 --- */
.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--bg-section);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-blue);
    border-radius: 3px;
    transition: width 0.5s ease;
    position: relative;
}

/* --- 加载 --- */
.loading-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border-light);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* --- 回到顶部 --- */
.back-to-top {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 42px;
    height: 42px;
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: 50%;
    color: var(--accent-blue);
    font-size: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 90;
    box-shadow: var(--shadow-md);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--accent-blue);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
}

/* --- 响应式 --- */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-steps {
        grid-template-columns: repeat(2, 1fr);
        gap: 36px;
    }

    .process-steps::before {
        display: none;
    }

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

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

@media (max-width: 768px) {
    .check-nav .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .services-grid,
    .option-grid {
        grid-template-columns: 1fr;
    }

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

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

    .hero-title {
        font-size: 28px;
    }

    .hero-desc {
        font-size: 14px;
    }

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

    .order-item {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .container {
        padding: 0 16px;
    }

    .process-steps {
        grid-template-columns: 1fr 1fr;
    }
}

::-webkit-scrollbar {
    width: 7px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

::selection {
    background: rgba(37, 99, 235, 0.15);
    color: var(--text-dark);
}