/* ========================================
   HS Code 智能查询 - 主样式表
   设计风格：简洁白色背景，红色强调色，Inter 字体
   ======================================== */

/* 全局重置：清除默认边距和内边距，使用 border-box 盒模型 */
* { margin: 0; padding: 0; box-sizing: border-box; }

/* ========================================
   CSS 自定义属性（设计令牌）
   ======================================== */
:root {
    /* 颜色 - 中性色阶 */
    --white: #ffffff;
    --black: #111111;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;

    /* Red accents */
    --red: #DC2626;
    --red-hover: #B91C1C;
    --red-50: #FEF2F2;
    --red-100: #FEE2E2;

    /* 状态颜色 */
    --green: #16A34A;
    --green-50: #F0FDF4;
    --green-100: #DCFCE7;
    --yellow: #CA8A04;
    --yellow-50: #FEFCE8;
    --yellow-100: #FEF9C3;
    --blue: #2563EB;
    --blue-50: #EFF6FF;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;

    /* Spacing */
    --sp-1: 4px;
    --sp-2: 8px;
    --sp-3: 12px;
    --sp-4: 16px;
    --sp-5: 20px;
    --sp-6: 24px;
    --sp-8: 32px;
    --sp-10: 40px;
    --sp-12: 48px;
    --sp-16: 64px;
    --sp-20: 80px;
    --sp-24: 96px;

    /* Radius */
    --r-sm: 4px;
    --r-md: 6px;
    --r-lg: 8px;
    --r-xl: 12px;
    --r-2xl: 16px;
    --r-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-card: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-hover: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
    --shadow-search: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-search-focus: 0 0 0 2px var(--red), 0 1px 3px rgba(0,0,0,0.06);
    --shadow-header: 0 1px 0 var(--gray-200);
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    background: var(--white);
    color: var(--black);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   顶部导航栏
   ======================================== */
.site-header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: var(--sp-4) var(--sp-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    text-decoration: none;
    color: var(--black);
}

.logo-icon {
    width: 20px;
    height: 20px;
}

.logo-text {
    font-size: 16px;
    font-weight: 600;
    letter-spacing: -0.3px;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: var(--sp-6);
}

.nav-link {
    color: var(--gray-600);
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    transition: color 150ms;
}

.nav-link:hover {
    color: var(--black);
}

.username-link {

    color: var(--color-text);

    text-decoration: none;

    cursor: pointer;

    font-weight: 600;

    transition: color 0.15s;

}

.username-link:hover {

    color: var(--red);

}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
}

.points-badge {
    background: var(--yellow-50);
    color: var(--yellow);
    padding: 3px 10px;
    border-radius: var(--r-full);
    font-size: 12px;
    font-weight: 600;
}

.username-text {
    color: var(--gray-500);
    font-size: 13px;
}

/* ========================================
   主内容区域
   ======================================== */
.app-main {
    min-height: calc(100vh - 180px);
}

/* ========================================
   首屏英雄区
   ======================================== */
.hero {
    padding: var(--sp-20) var(--sp-6) var(--sp-12);
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    font-size: 44px;
    font-weight: 700;
    letter-spacing: -1.2px;
    line-height: 1.15;
    margin-bottom: var(--sp-4);
    color: var(--black);
}

.hero-subtitle {
    font-size: 17px;
    color: var(--gray-500);
    line-height: 1.6;
    margin-bottom: var(--sp-8);
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

/* 搜索框样式 */
.search-wrapper {
    margin-top: var(--sp-6);
}

.search-bar {
    display: flex;
    align-items: center;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--r-xl);
    padding: 6px;
    box-shadow: var(--shadow-search);
    transition: box-shadow 150ms, border-color 150ms;
}

.search-bar:focus-within {
    border-color: var(--red);
    box-shadow: var(--shadow-search-focus);
}

.search-bar input {
    flex: 1;
    border: none;
    outline: none;
    padding: 10px 14px;
    font-size: 16px;
    font-family: var(--font-sans);
    color: var(--black);
    background: transparent;
}

.search-bar input::placeholder {
    color: var(--gray-400);
}

.btn-search {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--red);
    color: var(--white);
    border: none;
    border-radius: var(--r-lg);
    padding: 10px 20px;
    font-size: 15px;
    font-weight: 500;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: background 150ms;
    white-space: nowrap;
}

.btn-search:hover {
    background: var(--red-hover);
}

/* Suggestions */
.suggestions {
    margin-top: var(--sp-4);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 6px;
}

.try-label {
    font-size: 14px;
    color: var(--gray-400);
    margin-right: 2px;
}

.pill {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--r-full);
    padding: 4px 14px;
    font-size: 13px;
    color: var(--gray-600);
    cursor: pointer;
    transition: all 150ms;
    font-family: var(--font-sans);
}

.pill:hover {
    background: var(--red-50);
    border-color: var(--red-100);
    color: var(--red);
}

/* ========================================
   搜索结果区域
   ======================================== */
.results-section {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--sp-6) var(--sp-12);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: var(--sp-6);
    padding-bottom: var(--sp-4);
    border-bottom: 1px solid var(--gray-200);
}

.results-title {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.3px;
    color: var(--black);
}

.results-count {
    font-size: 14px;
    color: var(--gray-400);
}

.results-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Result Card */
.result-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--r-xl);
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    transition: box-shadow 150ms, border-color 150ms;
}

.result-card:hover {
    box-shadow: var(--shadow-hover);
    border-color: var(--gray-300);
}

.result-body {
    flex: 1;
    padding-right: 24px;
}

.result-code {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 500;
    color: var(--red);
    margin-bottom: 4px;
    letter-spacing: 0.5px;
}

.result-name {
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.2px;
    line-height: 1.3;
    margin-bottom: 6px;
    color: var(--black);
}

.result-description {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.5;
    margin-bottom: 12px;
}

.result-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: var(--r-full);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.2px;
}

.tag.chapter {
    background: var(--gray-50);
    color: var(--gray-500);
    border: 1px solid var(--gray-200);
}

.tag.category {
    background: var(--blue-50);
    color: var(--blue);
}

.tag.exact {
    background: var(--green-50);
    color: var(--green);
    border: 1px solid var(--green-100);
}

.tag.related {
    background: var(--yellow-50);
    color: var(--yellow);
    border: 1px solid var(--yellow-100);
}

.result-meta {
    font-size: 13px;
    color: var(--gray-500);
    display: flex;
    align-items: center;
    gap: 6px;
}

.result-meta strong {
    color: var(--black);
    font-weight: 600;
}

.meta-divider {
    color: var(--gray-300);
}

.result-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 12px;
    min-width: 90px;
    flex-shrink: 0;
}

.gst-tag {
    background: var(--red-50);
    color: var(--red);
    padding: 5px 12px;
    border-radius: var(--r-md);
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-mono);
    letter-spacing: 0.3px;
}

.details-link {
    color: var(--gray-400);
    font-size: 13px;
    text-decoration: none;
    transition: color 150ms;
}

.details-link:hover {
    color: var(--red);
}

/* ========================================
   功能特性区
   ======================================== */
.features {
    max-width: 1120px;
    margin: 0 auto;
    padding: var(--sp-8) var(--sp-6) var(--sp-20);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-6);
}

.feature {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--r-xl);
    padding: var(--sp-6);
    transition: box-shadow 150ms;
}

.feature:hover {
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    width: 44px;
    height: 44px;
    background: var(--red-50);
    color: var(--red);
    border-radius: var(--r-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--sp-4);
}

.feature h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--sp-2);
    letter-spacing: -0.2px;
    color: var(--black);
}

.feature p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ========================================
   登录注册页面
   ======================================== */
.auth-wrapper {
    max-width: 400px;
    margin: 80px auto;
    animation: fadeIn 0.3s ease;
}

.auth-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--r-xl);
    padding: var(--sp-8);
    box-shadow: var(--shadow-card);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--sp-6);
}

.auth-header h1 {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: var(--sp-2);
}

.auth-header p {
    font-size: 14px;
    color: var(--gray-500);
}

.auth-form {
    margin-bottom: var(--sp-5);
}

.auth-footer {
    text-align: center;
    font-size: 14px;
    color: var(--gray-500);
    display: flex;
    justify-content: center;
    gap: var(--sp-2);
}

.auth-footer a {
    color: var(--red);
    text-decoration: none;
    font-weight: 500;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* ========================================
   仪表盘
   ======================================== */
.dashboard {
    max-width: 1120px;
    margin: 0 auto;
    padding: var(--sp-6);
}

/* Shared page content wrapper - consistent padding for all pages */
.page-content {
    max-width: 1120px;
    margin: 0 auto;
    padding: var(--sp-6);
}

.welcome-section {
    margin-bottom: var(--sp-8);
    animation: fadeIn 0.3s ease;
}

.welcome-section h2 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.8px;
    margin-bottom: var(--sp-2);
}

.welcome-section p {
    font-size: 15px;
    color: var(--gray-500);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--sp-4);
    margin-bottom: var(--sp-6);
}

.stat-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--r-xl);
    padding: var(--sp-6);
    cursor: pointer;
    transition: all 150ms;
}

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

.stat-icon { font-size: 24px; margin-bottom: var(--sp-3); }
.stat-card h3 { font-size: 15px; font-weight: 600; margin-bottom: 2px; }
.stat-card p { font-size: 13px; color: var(--gray-500); }

/* ========================================
   卡片组件
   ======================================== */
.card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--r-xl);
    padding: var(--sp-6);
    margin-bottom: var(--sp-4);
    animation: fadeIn 0.3s ease;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--sp-5);
    padding-bottom: var(--sp-4);
    border-bottom: 1px solid var(--gray-100);
}

.card-header h3 {
    font-size: 16px;
    font-weight: 600;
    letter-spacing: -0.2px;
}

.card-subtitle {
    font-size: 13px;
    color: var(--gray-500);
    margin-top: 2px;
}

.view-all-link {
    color: var(--red);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
}

.view-all-link:hover { text-decoration: underline; }

.max-w-md { max-width: 480px; margin: 0 auto; }
.max-w-lg { max-width: 640px; margin: 0 auto; }

.stats-row {
    display: flex;
    gap: var(--sp-6);
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stat-item .label {
    font-size: 12px;
    color: var(--gray-400);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-item .value {
    font-size: 24px;
    font-weight: 700;
    font-family: var(--font-mono);
}

/* ========================================
   表单元素
   ======================================== */
.form-group {
    margin-bottom: var(--sp-4);
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 14px;
    color: var(--gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-200);
    border-radius: var(--r-lg);
    font-size: 15px;
    font-family: var(--font-sans);
    color: var(--black);
    background: var(--white);
    transition: border-color 150ms, box-shadow 150ms;
}

.form-group input::placeholder {
    color: var(--gray-400);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--red);
    box-shadow: 0 0 0 2px var(--red-50);
}

.form-hint {
    font-size: 13px;
    color: var(--gray-400);
    margin-bottom: var(--sp-4);
}

/* ========================================
   按钮样式
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    border: none;
    border-radius: var(--r-lg);
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all 150ms;
    text-decoration: none;
    line-height: 1.4;
}

.btn-primary {
    background: var(--black);
    color: var(--white);
}

.btn-primary:hover {
    background: #333;
}

.btn-black {
    background: var(--black);
    color: var(--white);
}

.btn-black:hover {
    background: #333;
}

.btn-ghost {
    background: transparent;
    color: var(--gray-600);
}

.btn-ghost:hover {
    background: var(--gray-50);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--gray-200);
    color: var(--gray-600);
}

.btn-outline:hover {
    background: var(--gray-50);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ========================================
   上传区域
   ======================================== */
.upload-zone {
    border: 2px dashed var(--gray-200);
    border-radius: var(--r-xl);
    padding: 32px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 150ms;
    position: relative;
    background: var(--gray-50);
}

.upload-zone:hover {
    border-color: var(--red);
    background: var(--red-50);
}

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

.upload-text {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
}

.upload-hint {
    font-size: 13px;
    color: var(--gray-400);
}

.file-info {
    margin-top: var(--sp-3);
    padding: 8px 12px;
    background: var(--blue-50);
    border-radius: var(--r-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
}

.file-count {
    color: var(--blue);
    font-weight: 600;
    font-family: var(--font-mono);
}

/* ========================================
   单选按钮组
   ======================================== */
.radio-group {
    display: flex;
    gap: var(--sp-3);
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border: 1px solid var(--gray-200);
    border-radius: var(--r-lg);
    cursor: pointer;
    transition: all 150ms;
    font-size: 14px;
    font-weight: 500;
    flex: 1;
    justify-content: center;
}

.radio-label:has(input:checked) {
    border-color: var(--red);
    background: var(--red-50);
    color: var(--red);
}

.radio-label input {
    position: absolute;
    opacity: 0;
}

.radio-icon {
    width: 16px;
    height: 16px;
    border: 2px solid var(--gray-300);
    border-radius: 50%;
    position: relative;
    transition: all 150ms;
}

.radio-label:has(input:checked) .radio-icon {
    border-color: var(--red);
}

.radio-label:has(input:checked) .radio-icon::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 8px;
    height: 8px;
    background: var(--red);
    border-radius: 50%;
}

/* ========================================
   预览与费率显示
   ======================================== */
.preview-box {
    background: var(--green-50);
    border: 1px solid var(--green-100);
    border-radius: var(--r-lg);
    padding: 12px 16px;
    margin-bottom: var(--sp-4);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.preview-box strong {
    font-size: 20px;
    color: var(--green);
    font-family: var(--font-mono);
}

.rate-box {
    text-align: center;
    padding: 12px;
    background: var(--gray-50);
    border-radius: var(--r-lg);
    margin-bottom: var(--sp-5);
    display: flex;
    justify-content: center;
    gap: var(--sp-3);
    align-items: center;
}

.rate-label {
    color: var(--gray-400);
    font-size: 14px;
}

.rate-value {
    font-size: 16px;
    font-weight: 600;
    font-family: var(--font-mono);
}

/* ========================================
   结果反馈框
   ======================================== */
.result-box {
    margin-top: var(--sp-4);
    padding: 14px 16px;
    border-radius: var(--r-lg);
    font-size: 14px;
    line-height: 1.6;
    animation: fadeIn 0.3s ease;
}

.result-box.success {
    background: var(--green-50);
    border: 1px solid var(--green-100);
    color: var(--green);
}

.result-box.error {
    background: var(--red-50);
    border: 1px solid var(--red-100);
    color: var(--red);
}

.result-box.info {
    background: var(--blue-50);
    border: 1px solid var(--blue-50);
    color: var(--blue);
}

/* ========================================
   数据表格
   ======================================== */
.task-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.task-table th,
.task-table td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--gray-100);
}

.task-table th {
    background: var(--gray-50);
    font-weight: 500;
    color: var(--gray-500);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.task-table tbody tr:hover {
    background: var(--gray-50);
}

.task-table code {
    font-family: var(--font-mono);
    font-size: 13px;
    background: var(--gray-50);
    padding: 2px 6px;
    border-radius: var(--r-sm);
    border: 1px solid var(--gray-200);
}

/* ========================================
   状态徽章
   ======================================== */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: var(--r-full);
    font-size: 12px;
    font-weight: 500;
}

.status-pending { background: var(--gray-50); color: var(--gray-400); }
.status-queued { background: var(--yellow-50); color: var(--yellow); }
.status-processing { background: var(--blue-50); color: var(--blue); }
.status-success { background: var(--green-50); color: var(--green); }
.status-failed { background: var(--red-50); color: var(--red); }

/* ========================================
   分页组件
   ======================================== */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--sp-2);
    margin-top: var(--sp-4);
}

.pagination button {
    padding: 6px 12px;
    border: 1px solid var(--gray-200);
    border-radius: var(--r-md);
    background: var(--white);
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    transition: all 150ms;
    color: var(--gray-600);
}

.pagination button.active {
    background: var(--red);
    color: var(--white);
    border-color: var(--red);
}

.pagination button:hover:not(.active) {
    background: var(--gray-50);
}

/*   增强版分页*/
.pagination-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--sp-4);
    flex-wrap: wrap;
    gap: var(--sp-2);
}
.pagination-left,
.pagination-center,
.pagination-right {
    display: flex;
    align-items: center;
    gap: 6px;
}
.pagination-left { order: 1; }
.pagination-center { order: 2; flex-wrap: wrap; justify-content: center; }
.pagination-right { order: 3; }
.pagination-info {
    font-size: 12px;
    color: var(--gray-400);
    margin-left: 4px;
}
.pagination-wrapper select {
    padding: 4px 8px;
    border: 1px solid var(--gray-200);
    border-radius: var(--r-md);
    font-size: 13px;
    background: var(--white);
    color: var(--color-text);
}
.pagination-jump-input {
    width: 56px;
    padding: 4px 8px;
    border: 1px solid var(--gray-200);
    border-radius: var(--r-md);
    font-size: 13px;
    text-align: center;
    background: var(--white);
    color: var(--color-text);
}
.pagination-wrapper span {
    font-size: 13px;
    color: var(--gray-500);
}
.pagination-wrapper button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ========================================
   筛选栏
   ======================================== */
.filter-bar {
    display: flex;
    gap: var(--sp-3);
    margin-bottom: var(--sp-4);
}

.filter-bar select,
.filter-bar input {
    padding: 8px 12px;
    border: 1px solid var(--gray-200);
    border-radius: var(--r-md);
    font-size: 14px;
    font-family: var(--font-sans);
}

.filter-bar select:focus,
.filter-bar input:focus {
    outline: none;
    border-color: var(--red);
    box-shadow: 0 0 0 2px var(--red-50);
}

/* ========================================
   进度条
   ======================================== */
.progress-bar {
    width: 100%;
    height: 20px;
    background: var(--gray-50);
    border-radius: var(--r-full);
    overflow: hidden;
    margin: var(--sp-3) 0;
    border: 1px solid var(--gray-200);
}

.progress-fill {
    height: 100%;
    background: var(--red);
    transition: width 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 11px;
    font-weight: 600;
    font-family: var(--font-mono);
}

/* ========================================
   返回链接
   ======================================== */
.back-link {
    color: var(--red);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    white-space: nowrap;
}

.back-link:hover {
    text-decoration: underline;
}

/* ========================================
   重试按钮
   ======================================== */
.btn-retry {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--red-50);
    color: var(--red);
    border: 1px solid var(--red-100);
    border-radius: var(--r-md);
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 500;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all 150ms;
    white-space: nowrap;
}

.btn-retry:hover {
    background: var(--red);
    color: #fff;
    border-color: var(--red);
}

.btn-retry:active {
    transform: scale(0.95);
}

.btn-retry:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.error-tooltip {
    display: inline-block;
    color: var(--gray-400);
    cursor: help;
    font-size: 14px;
    margin-left: 6px;
}

/* ========================================
   提示消息
   ======================================== */
.toast {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    background: var(--black);
    color: var(--white);
    padding: 12px 24px;
    border-radius: var(--r-lg);
    font-size: 14px;
    font-weight: 500;
    z-index: 9999;
    transition: transform 0.3s ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

/* ========================================
   骨架屏加载
   ======================================== */
.skeleton {
    background: linear-gradient(90deg, var(--gray-50) 25%, var(--gray-100) 50%, var(--gray-50) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--r-md);
}

.skeleton-text { height: 16px; margin-bottom: var(--sp-2); }
.skeleton-card { height: 70px; border-radius: var(--r-lg); animation: shimmer 1.5s infinite; }
.skeleton-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--sp-3); }
.skeleton-table-row { height: 36px; background: var(--gray-50); border-radius: var(--r-md); margin-bottom: var(--sp-2); animation: shimmer 1.5s infinite; }
.skeleton-progress-bar { height: 20px; background: var(--gray-50); border-radius: var(--r-full); margin-top: var(--sp-3); animation: shimmer 1.5s infinite; }

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========================================
   页脚
   ======================================== */
.site-footer {
    border-top: 1px solid var(--gray-200);
    padding: var(--sp-8) var(--sp-6);
    background: var(--white);
}

.footer-inner {
    max-width: 1120px;
    margin: 0 auto;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--sp-6);
    margin-bottom: var(--sp-4);
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--gray-500);
    text-decoration: none;
    font-size: 14px;
    transition: color 150ms;
}

.footer-links a:hover {
    color: var(--red);
}

.footer-disclaimer {
    font-size: 12px;
    color: var(--gray-400);
    line-height: 1.5;
    max-width: 560px;
    margin: 0 auto;
}

/* ========================================
   响应式适配
   ======================================== */
@media (max-width: 768px) {
    /* 导航栏响应式 */
    .header-inner {
        padding: var(--sp-3) var(--sp-4);
    }

    .logo-text {
        font-size: 14px;
    }

    .nav-link { display: none; }

    .header-nav {
        gap: var(--sp-2);
    }

    .btn-sm {
        padding: 5px 10px;
        font-size: 12px;
    }

    /* 首屏区响应式 */
    .hero {
        padding: var(--sp-10) var(--sp-4) var(--sp-8);
    }

    .hero-title {
        font-size: 26px;
        letter-spacing: -0.6px;
        line-height: 1.2;
    }

    .hero-subtitle {
        font-size: 14px;
        line-height: 1.5;
        margin-bottom: var(--sp-6);
    }

    /* Search */
    .search-bar {
        flex-direction: column;
        gap: var(--sp-2);
        padding: var(--sp-2);
        border-radius: var(--r-xl);
    }

    .search-bar input {
        width: 100%;
        padding: 12px 14px;
        font-size: 16px; /* Prevents iOS zoom */
        text-align: center;
    }

    .btn-search {
        width: 100%;
        justify-content: center;
        padding: 12px 20px;
        font-size: 16px;
        border-radius: var(--r-lg);
    }

    /* 搜索建议响应式 */
    .suggestions {
        gap: 4px;
        padding: 0 var(--sp-2);
    }

    .try-label {
        width: 100%;
        margin-right: 0;
        margin-bottom: 2px;
        text-align: center;
    }

    .pill {
        padding: 4px 10px;
        font-size: 12px;
    }

    /* 结果区响应式 */
    .results-section {
        padding: 0 var(--sp-4) var(--sp-10);
    }

    .results-header {
        flex-direction: column;
        gap: var(--sp-2);
        align-items: flex-start;
    }

    .results-title {
        font-size: 17px;
    }

    .results-count {
        font-size: 12px;
    }

    .results-list {
        gap: 8px;
    }

    .result-card {
        flex-direction: column;
        padding: 16px;
    }

    .result-body {
        padding-right: 0;
    }

    .result-code {
        font-size: 12px;
    }

    .result-name {
        font-size: 15px;
    }

    .result-description {
        font-size: 13px;
        margin-bottom: 8px;
    }

    .result-tags {
        gap: 4px;
        margin-bottom: 8px;
    }

    .tag {
        padding: 2px 8px;
        font-size: 10px;
    }

    .result-meta {
        font-size: 12px;
    }

    .result-actions {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        margin-top: var(--sp-3);
        padding-top: var(--sp-3);
        border-top: 1px solid var(--gray-100);
        min-width: auto;
        width: 100%;
    }

    .gst-tag {
        font-size: 12px;
        padding: 4px 10px;
    }

    .details-link {
        font-size: 12px;
    }

    /* 功能特性区响应式 */
    .features {
        grid-template-columns: 1fr;
        padding: var(--sp-6) var(--sp-4) var(--sp-12);
        gap: var(--sp-4);
    }

    .feature {
        padding: var(--sp-5);
    }

    .feature h3 {
        font-size: 15px;
    }

    .feature p {
        font-size: 13px;
    }

    /* 登录注册区响应式 */
    .auth-wrapper {
        margin: 32px auto;
        padding: 0 var(--sp-4);
    }

    .auth-card {
        padding: var(--sp-6);
    }

    .auth-header h1 {
        font-size: 20px;
    }

    .auth-header p {
        font-size: 13px;
    }

    /* 仪表盘响应式 */
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--sp-3);
    }

    .stat-card {
        padding: var(--sp-4);
    }

    .stat-icon { font-size: 20px; }
    .stat-card h3 { font-size: 14px; }
    .stat-card p { font-size: 12px; }

    .welcome-section h2 {
        font-size: 22px;
    }

    .welcome-section p {
        font-size: 14px;
    }

    /* 卡片响应式 */
    .card {
        padding: var(--sp-4);
        margin: 0 var(--sp-4) var(--sp-4);
        border-radius: var(--r-lg);
    }

    .card-header {
        flex-direction: column;
        gap: var(--sp-2);
        margin-bottom: var(--sp-4);
        padding-bottom: var(--sp-3);
    }

    .card-header h3 {
        font-size: 15px;
    }

    .max-w-md, .max-w-lg {
        max-width: 100%;
        margin: 0;
    }

    /* 筛选栏响应式 */
    .filter-bar {
        flex-direction: column;
        gap: var(--sp-2);
    }

    .filter-bar select,
    .filter-bar input {
        width: 100%;
    }

    /* 单选组响应式 */
    .radio-group {
        flex-direction: column;
        gap: var(--sp-2);
    }

    /* 页脚响应式 */
    .site-footer {
        padding: var(--sp-6) var(--sp-4);
    }

    .footer-links {
        flex-direction: column;
        gap: var(--sp-3);
        align-items: center;
    }

    .footer-disclaimer {
        font-size: 11px;
        padding: 0 var(--sp-4);
    }

    /* 表格可滚动 */
    .task-table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        font-size: 13px;
        position: relative;
    }

    .task-table-wrapper {
        position: relative;
        max-width: 100%;
        overflow-x: auto;
    }

    .task-table th,
    .task-table td {
        padding: 10px 8px;
        white-space: nowrap;
    }

    /* 重试按钮移动端适配 */
    .btn-retry {
        font-size: 11px;
        padding: 3px 8px;
        white-space: nowrap;
    }

    .task-table td:last-child {
        display: flex;
        align-items: center;
        gap: 4px;
    }

    /* 任务列表移动端卡片布局 */
    .task-list-cards {
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .task-card {
        background: var(--white);
        border: 1px solid var(--gray-200);
        border-radius: var(--r-lg);
        padding: 12px;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .task-card-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .task-card-product {
        font-weight: 600;
        font-size: 14px;
        color: var(--black);
    }

    .task-card-row {
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 12px;
        color: var(--gray-500);
    }

    .task-card-hscode {
        font-family: var(--font-mono);
        font-size: 12px;
        color: var(--red);
        font-weight: 500;
    }

    /* 骨架屏响应式 */
    .skeleton-grid {
        grid-template-columns: 1fr 1fr;
    }

    /* 统计行响应式 */
    .stats-row {
        gap: var(--sp-4);
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: var(--sp-2);
    }

    .stat-item .value {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    /* 超小屏幕适配 */
    .hero {
        padding: var(--sp-8) var(--sp-3) var(--sp-6);
    }

    .hero-title {
        font-size: 22px;
    }

    .hero-subtitle {
        font-size: 13px;
    }

    .search-bar input {
        font-size: 14px;
    }

    .btn-search {
        font-size: 14px;
        padding: 10px 16px;
    }

    .pill {
        padding: 3px 8px;
        font-size: 11px;
    }

    .results-section {
        padding: 0 var(--sp-3) var(--sp-8);
    }

    .result-card {
        padding: 12px;
    }

    .result-name {
        font-size: 14px;
    }

    .features {
        padding: var(--sp-4) var(--sp-3) var(--sp-10);
        gap: var(--sp-3);
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--sp-3);
    }

    .card {
        padding: var(--sp-3);
        margin: 0 var(--sp-3) var(--sp-3);
    }

    .auth-wrapper {
        margin: 24px auto;
        padding: 0 var(--sp-3);
    }

    .auth-card {
        padding: var(--sp-5);
    }

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

    .header-inner {
        padding: var(--sp-2) var(--sp-3);
    }

    .logo-text {
        font-size: 13px;
    }

    .logo-icon {
        width: 16px;
        height: 16px;
    }

    .pagination button {
        padding: 4px 8px;
        font-size: 12px;
    }
}

@media (max-width: 360px) {
    .hero-title {
        font-size: 20px;
    }

    .hero-subtitle {
        font-size: 12px;
    }

    .result-tags {
        flex-wrap: wrap;
    }

    .tag {
        font-size: 9px;
        padding: 2px 6px;
    }
}

/* ==================== Free Query ==================== */
.free-badge {
    display: none;
    text-align: center;
    margin-bottom: 16px;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.free-badge.active {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), rgba(34, 197, 94, 0.05));
    color: var(--color-green);
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.free-badge.expired {
    background: rgba(239, 68, 68, 0.05);
    color: var(--color-red);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.free-result-container {
    margin-top: 32px;
    animation: fadeInUp 0.4s ease;
}

.free-result-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.free-result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-border);
}

.free-result-header h3 {
    margin: 0;
    font-size: 18px;
    color: var(--color-text-primary);
}

.free-remaining {
    font-size: 14px;
    color: var(--color-green);
    font-weight: 500;
}

.free-result-content {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.result-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.result-label {
    min-width: 80px;
    font-size: 14px;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.result-value {
    flex: 1;
    font-size: 14px;
    color: var(--color-text-primary);
}

.result-value.hscode {
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-weight: 600;
    color: var(--color-primary);
    font-size: 16px;
}

.result-value.confidence {
    color: var(--color-green);
    font-weight: 600;
}

.free-result-footer {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.spinner-small {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-right: 6px;
    vertical-align: middle;
}

@media (max-width: 768px) {
    .free-result-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .result-item {
        flex-direction: column;
        gap: 4px;
    }

    .result-label {
        min-width: auto;
    }
}

/* ==================== API Documentation ==================== */
.api-doc-container {
    max-width: 960px;
    margin: 0 auto;
    padding: 48px 24px;
}

.api-doc-hero {
    text-align: center;
    margin-bottom: 48px;
    padding: 40px 0;
}

.api-doc-hero h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
}

.api-doc-hero p {
    font-size: 16px;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
}

.api-doc-base-url {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 12px 20px;
}

.api-doc-base-url .label {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
}

.api-doc-base-url code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    color: var(--color-primary);
}

.api-doc-section {
    margin-bottom: 48px;
}

.api-doc-section h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.section-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    font-size: 14px;
    margin-right: 10px;
}

.api-doc-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
}

.api-doc-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text-primary);
}

.api-doc-card h4 {
    font-size: 14px;
    font-weight: 600;
    margin: 20px 0 12px;
    color: var(--color-text-secondary);
}

.api-method {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.method-tag {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    font-family: 'JetBrains Mono', monospace;
}

.method-tag.post {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.method-tag.get {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

.method-tag.delete {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.api-path {
    font-family: 'JetBrains Mono', monospace;
    font-size: 15px;
    color: var(--color-text-primary);
}

.api-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    margin: 12px 0;
}

.api-table th {
    background: var(--color-bg);
    padding: 10px 14px;
    text-align: left;
    font-weight: 600;
    font-size: 12px;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    border-bottom: 1px solid var(--color-border);
}

.api-table td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--color-border-light);
    vertical-align: top;
}

.api-table td:first-child {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: var(--color-primary);
    font-weight: 500;
}

.code-block {
    background: #1e1e2e;
    border-radius: 10px;
    overflow: hidden;
    margin: 12px 0;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    background: #181825;
    border-bottom: 1px solid #313244;
}

.code-header span {
    font-size: 12px;
    font-weight: 600;
    color: #a6adc8;
}

.btn-copy {
    background: #313244;
    border: none;
    color: #a6adc8;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-copy:hover {
    background: #45475a;
    color: #cdd6f4;
}

.code-block pre {
    padding: 16px;
    margin: 0;
    overflow-x: auto;
}

.code-block code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: #cdd6f4;
    line-height: 1.6;
    white-space: pre;
}

.api-note {
    font-size: 14px;
    color: var(--color-text-secondary);
    background: var(--color-bg);
    padding: 12px 16px;
    border-radius: 8px;
    border-left: 3px solid var(--color-primary);
    margin-top: 12px;
}

.api-note-card {
    background: var(--color-bg);
    padding: 16px 20px;
    border-radius: 10px;
    margin: 16px 0;
}

.api-note-card p {
    margin: 0 0 8px;
    font-size: 14px;
    font-weight: 500;
}

.api-note-card ul {
    margin: 0;
    padding-left: 20px;
}

.api-note-card li {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: 4px;
}

@media (max-width: 768px) {
    .api-doc-container {
        padding: 24px 16px;
    }

    .api-doc-hero h1 {
        font-size: 24px;
    }

    .api-doc-section h2 {
        font-size: 20px;
    }

    .api-doc-card {
        padding: 16px;
    }

    .api-table {
        font-size: 12px;
    }

    .api-table th,
    .api-table td {
        padding: 8px 10px;
    }

    .api-method {
        flex-wrap: wrap;
    }

    .api-doc-base-url {
        flex-direction: column;
        gap: 6px;
    }
}