/* Tailwind CSS 基础样式 */
/* 重置样式 */
*, ::before, ::after {
    box-sizing: border-box;
    border-width: 0;
    border-style: solid;
    border-color: currentColor;
}

::before, ::after {
    --tw-content: '';
}

html {
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
    -moz-tab-size: 4;
    -o-tab-size: 4;
    tab-size: 4;
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    font-feature-settings: normal;
    font-variation-settings: normal;
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0;
    line-height: inherit;
}

hr {
    height: 0;
    color: inherit;
    border-top-width: 1px;
}

abbr:where([title]) {
    -webkit-text-decoration: underline dotted;
    text-decoration: underline dotted;
}

h1, h2, h3, h4, h5, h6 {
    font-size: inherit;
    font-weight: inherit;
}

a {
    color: inherit;
    text-decoration: inherit;
}

b, strong {
    font-weight: bolder;
}

code, kbd, samp, pre {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 1em;
}

small {
    font-size: 80%;
}

sub, sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
}

sub {
    bottom: -0.25em;
}

sup {
    top: -0.5em;
}

table {
    text-indent: 0;
    border-color: inherit;
    border-collapse: collapse;
}

button, input, optgroup, select, textarea {
    font-family: inherit;
    font-feature-settings: inherit;
    font-variation-settings: inherit;
    font-size: 100%;
    font-weight: inherit;
    line-height: inherit;
    color: inherit;
    margin: 0;
    padding: 0;
}

button, select {
    text-transform: none;
}

button, [type='button'], [type='reset'], [type='submit'] {
    -webkit-appearance: button;
    background-color: transparent;
    background-image: none;
}

:-moz-focusring {
    outline: auto;
}

:-moz-ui-invalid {
    box-shadow: none;
}

progress {
    vertical-align: baseline;
}

::-webkit-inner-spin-button, ::-webkit-outer-spin-button {
    height: auto;
}

[type='search'] {
    -webkit-appearance: textfield;
    outline-offset: -2px;
}

::-webkit-search-decoration {
    -webkit-appearance: none;
}

::-webkit-file-upload-button {
    -webkit-appearance: button;
    font: inherit;
}

summary {
    display: list-item;
}

blockquote, dl, dd, h1, h2, h3, h4, h5, h6, hr, figure, p, pre {
    margin: 0;
}

fieldset {
    margin: 0;
    padding: 0;
}

legend {
    padding: 0;
}

ol, ul, menu {
    list-style: none;
    margin: 0;
    padding: 0;
}

textarea {
    resize: vertical;
}

    input::-moz-placeholder, textarea::-moz-placeholder {
        opacity: 1;
        color: #9ca3af;
    }

    input::placeholder, textarea::placeholder {
        opacity: 1;
        color: #9ca3af;
    }

button, [role="button"] {
    cursor: pointer;
}

:disabled {
    cursor: default;
}

svg, video, canvas, audio, iframe, embed, object {
    display: block;
    vertical-align: middle;
}

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

[hidden] {
    display: none;
}

/* Tailwind 工具类基础样式 */
/* 显示状态 */
.block {
    display: block;
}

.inline-block {
    display: inline-block;
}

.inline {
    display: inline;
}

.flex {
    display: flex;
}

.inline-flex {
    display: inline-flex;
}

.grid {
    display: grid;
}

.hidden {
    display: none;
}

/* 定位 */
.static {
    position: static;
}

.fixed {
    position: fixed;
}

.absolute {
    position: absolute;
}

.relative {
    position: relative;
}

/* 溢出 */
.overflow-auto {
    overflow: auto;
}

.overflow-hidden {
    overflow: hidden;
}

.overflow-visible {
    overflow: visible;
}

.overflow-scroll {
    overflow: scroll;
}

/* 边距 */
.m-0 {
    margin: 0;
}

.m-1 {
    margin: 0.25rem;
}

.m-2 {
    margin: 0.5rem;
}

.m-3 {
    margin: 0.75rem;
}

.m-4 {
    margin: 1rem;
}

.m-5 {
    margin: 1.25rem;
}

.m-6 {
    margin: 1.5rem;
}

.m-8 {
    margin: 2rem;
}

.m-10 {
    margin: 2.5rem;
}

.mt-0 {
    margin-top: 0;
}

.mt-1 {
    margin-top: 0.25rem;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-3 {
    margin-top: 0.75rem;
}

.mt-4 {
    margin-top: 1rem;
}

.mt-5 {
    margin-top: 1.25rem;
}

.mt-6 {
    margin-top: 1.5rem;
}

.mt-8 {
    margin-top: 2rem;
}

.mt-10 {
    margin-top: 2.5rem;
}

.mb-0 {
    margin-bottom: 0;
}

.mb-1 {
    margin-bottom: 0.25rem;
}

.mb-2 {
    margin-bottom: 0.5rem;
}

.mb-3 {
    margin-bottom: 0.75rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

.mb-5 {
    margin-bottom: 1.25rem;
}

.mb-6 {
    margin-bottom: 1.5rem;
}

.mb-8 {
    margin-bottom: 2rem;
}

.mb-10 {
    margin-bottom: 2.5rem;
}

.ml-0 {
    margin-left: 0;
}

.ml-1 {
    margin-left: 0.25rem;
}

.ml-2 {
    margin-left: 0.5rem;
}

.ml-3 {
    margin-left: 0.75rem;
}

.ml-4 {
    margin-left: 1rem;
}

.ml-5 {
    margin-left: 1.25rem;
}

.ml-6 {
    margin-left: 1.5rem;
}

.ml-8 {
    margin-left: 2rem;
}

.ml-10 {
    margin-left: 2.5rem;
}

.mr-0 {
    margin-right: 0;
}

.mr-1 {
    margin-right: 0.25rem;
}

.mr-2 {
    margin-right: 0.5rem;
}

.mr-3 {
    margin-right: 0.75rem;
}

.mr-4 {
    margin-right: 1rem;
}

.mr-5 {
    margin-right: 1.25rem;
}

.mr-6 {
    margin-right: 1.5rem;
}

.mr-8 {
    margin-right: 2rem;
}

.mr-10 {
    margin-right: 2.5rem;
}

/* 内边距 */
.p-0 {
    padding: 0;
}

.p-1 {
    padding: 0.25rem;
}

.p-2 {
    padding: 0.5rem;
}

.p-3 {
    padding: 0.75rem;
}

.p-4 {
    padding: 1rem;
}

.p-5 {
    padding: 1.25rem;
}

.p-6 {
    padding: 1.5rem;
}

.p-8 {
    padding: 2rem;
}

.p-10 {
    padding: 2.5rem;
}

.pt-0 {
    padding-top: 0;
}

.pt-1 {
    padding-top: 0.25rem;
}

.pt-2 {
    padding-top: 0.5rem;
}

.pt-3 {
    padding-top: 0.75rem;
}

.pt-4 {
    padding-top: 1rem;
}

.pt-5 {
    padding-top: 1.25rem;
}

.pt-6 {
    padding-top: 1.5rem;
}

.pt-8 {
    padding-top: 2rem;
}

.pt-10 {
    padding-top: 2.5rem;
}

.pb-0 {
    padding-bottom: 0;
}

.pb-1 {
    padding-bottom: 0.25rem;
}

.pb-2 {
    padding-bottom: 0.5rem;
}

.pb-3 {
    padding-bottom: 0.75rem;
}

.pb-4 {
    padding-bottom: 1rem;
}

.pb-5 {
    padding-bottom: 1.25rem;
}

.pb-6 {
    padding-bottom: 1.5rem;
}

.pb-8 {
    padding-bottom: 2rem;
}

.pb-10 {
    padding-bottom: 2.5rem;
}

.pl-0 {
    padding-left: 0;
}

.pl-1 {
    padding-left: 0.25rem;
}

.pl-2 {
    padding-left: 0.5rem;
}

.pl-3 {
    padding-left: 0.75rem;
}

.pl-4 {
    padding-left: 1rem;
}

.pl-5 {
    padding-left: 1.25rem;
}

.pl-6 {
    padding-left: 1.5rem;
}

.pl-8 {
    padding-left: 2rem;
}

.pl-10 {
    padding-left: 2.5rem;
}

.pr-0 {
    padding-right: 0;
}

.pr-1 {
    padding-right: 0.25rem;
}

.pr-2 {
    padding-right: 0.5rem;
}

.pr-3 {
    padding-right: 0.75rem;
}

.pr-4 {
    padding-right: 1rem;
}

.pr-5 {
    padding-right: 1.25rem;
}

.pr-6 {
    padding-right: 1.5rem;
}

.pr-8 {
    padding-right: 2rem;
}

.pr-10 {
    padding-right: 2.5rem;
}

/* 字体 */
.font-sans {
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
}

.font-serif {
    font-family: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
}

.font-mono {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

/* 字体大小 */
.text-xs {
    font-size: 0.75rem;
    line-height: 1rem;
}

.text-sm {
    font-size: 0.875rem;
    line-height: 1.25rem;
}

.text-base {
    font-size: 1rem;
    line-height: 1.5rem;
}

.text-lg {
    font-size: 1.125rem;
    line-height: 1.75rem;
}

.text-xl {
    font-size: 1.25rem;
    line-height: 1.75rem;
}

.text-2xl {
    font-size: 1.5rem;
    line-height: 2rem;
}

.text-3xl {
    font-size: 1.875rem;
    line-height: 2.25rem;
}

.text-4xl {
    font-size: 2.25rem;
    line-height: 2.5rem;
}

.text-5xl {
    font-size: 3rem;
    line-height: 1;
}

.text-6xl {
    font-size: 3.75rem;
    line-height: 1;
}

/* 字体粗细 */
.font-thin {
    font-weight: 100;
}

.font-extralight {
    font-weight: 200;
}

.font-light {
    font-weight: 300;
}

.font-normal {
    font-weight: 400;
}

.font-medium {
    font-weight: 500;
}

.font-semibold {
    font-weight: 600;
}

.font-bold {
    font-weight: 700;
}

.font-extrabold {
    font-weight: 800;
}

.font-black {
    font-weight: 900;
}

/* 文本对齐 */
.text-left {
    text-align: left;
}

.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-justify {
    text-align: justify;
}

/* 颜色 */
.text-black {
    color: #000000;
}

.text-white {
    color: #ffffff;
}

.text-gray-50 {
    color: #f9fafb;
}

.text-gray-100 {
    color: #f3f4f6;
}

.text-gray-200 {
    color: #e5e7eb;
}

.text-gray-300 {
    color: #d1d5db;
}

.text-gray-400 {
    color: #9ca3af;
}

.text-gray-500 {
    color: #6b7280;
}

.text-gray-600 {
    color: #4b5563;
}

.text-gray-700 {
    color: #374151;
}

.text-gray-800 {
    color: #1f2937;
}

.text-gray-900 {
    color: #111827;
}

.text-red-50 {
    color: #fef2f2;
}

.text-red-100 {
    color: #fee2e2;
}

.text-red-200 {
    color: #fecaca;
}

.text-red-300 {
    color: #fca5a5;
}

.text-red-400 {
    color: #f87171;
}

.text-red-500 {
    color: #ef4444;
}

.text-red-600 {
    color: #dc2626;
}

.text-red-700 {
    color: #b91c1c;
}

.text-red-800 {
    color: #991b1b;
}

.text-red-900 {
    color: #7f1d1d;
}

.text-blue-50 {
    color: #eff6ff;
}

.text-blue-100 {
    color: #dbeafe;
}

.text-blue-200 {
    color: #bfdbfe;
}

.text-blue-300 {
    color: #93c5fd;
}

.text-blue-400 {
    color: #60a5fa;
}

.text-blue-500 {
    color: #3b82f6;
}

.text-blue-600 {
    color: #2563eb;
}

.text-blue-700 {
    color: #1d4ed8;
}

.text-blue-800 {
    color: #1e40af;
}

.text-blue-900 {
    color: #1e3a8a;
}

/* 背景色 */
.bg-transparent {
    background-color: transparent;
}

.bg-black {
    background-color: #000000;
}

.bg-white {
    background-color: #ffffff;
}

.bg-gray-50 {
    background-color: #f9fafb;
}

.bg-gray-100 {
    background-color: #f3f4f6;
}

.bg-gray-200 {
    background-color: #e5e7eb;
}

.bg-gray-300 {
    background-color: #d1d5db;
}

.bg-gray-400 {
    background-color: #9ca3af;
}

.bg-gray-500 {
    background-color: #6b7280;
}

.bg-gray-600 {
    background-color: #4b5563;
}

.bg-gray-700 {
    background-color: #374151;
}

.bg-gray-800 {
    background-color: #1f2937;
}

.bg-gray-900 {
    background-color: #111827;
}

.bg-red-50 {
    background-color: #fef2f2;
}

.bg-red-100 {
    background-color: #fee2e2;
}

.bg-red-200 {
    background-color: #fecaca;
}

.bg-red-300 {
    background-color: #fca5a5;
}

.bg-red-400 {
    background-color: #f87171;
}

.bg-red-500 {
    background-color: #ef4444;
}

.bg-red-600 {
    background-color: #dc2626;
}

.bg-red-700 {
    background-color: #b91c1c;
}

.bg-red-800 {
    background-color: #991b1b;
}

.bg-red-900 {
    background-color: #7f1d1d;
}

.bg-blue-50 {
    background-color: #eff6ff;
}

.bg-blue-100 {
    background-color: #dbeafe;
}

.bg-blue-200 {
    background-color: #bfdbfe;
}

.bg-blue-300 {
    background-color: #93c5fd;
}

.bg-blue-400 {
    background-color: #60a5fa;
}

.bg-blue-500 {
    background-color: #3b82f6;
}

.bg-blue-600 {
    background-color: #2563eb;
}

.bg-blue-700 {
    background-color: #1d4ed8;
}

.bg-blue-800 {
    background-color: #1e40af;
}

.bg-blue-900 {
    background-color: #1e3a8a;
}

/* 边框 */
.border {
    border-width: 1px;
}

.border-0 {
    border-width: 0;
}

.border-2 {
    border-width: 2px;
}

.border-4 {
    border-width: 4px;
}

.border-8 {
    border-width: 8px;
}

.border-solid {
    border-style: solid;
}

.border-dashed {
    border-style: dashed;
}

.border-dotted {
    border-style: dotted;
}

.border-double {
    border-style: double;
}

.border-gray-200 {
    border-color: #e5e7eb;
}

.border-gray-300 {
    border-color: #d1d5db;
}

.border-gray-400 {
    border-color: #9ca3af;
}

.border-gray-500 {
    border-color: #6b7280;
}

.border-red-200 {
    border-color: #fecaca;
}

.border-red-300 {
    border-color: #fca5a5;
}

.border-red-400 {
    border-color: #f87171;
}

.border-red-500 {
    border-color: #ef4444;
}

.border-blue-200 {
    border-color: #bfdbfe;
}

.border-blue-300 {
    border-color: #93c5fd;
}

.border-blue-400 {
    border-color: #60a5fa;
}

.border-blue-500 {
    border-color: #3b82f6;
}

/* 圆角 */
.rounded-none {
    border-radius: 0;
}

.rounded {
    border-radius: 0.25rem;
}

.rounded-md {
    border-radius: 0.375rem;
}

.rounded-lg {
    border-radius: 0.5rem;
}

.rounded-xl {
    border-radius: 0.75rem;
}

.rounded-2xl {
    border-radius: 1rem;
}

.rounded-3xl {
    border-radius: 1.5rem;
}

.rounded-full {
    border-radius: 9999px;
}

/* 盒阴影 */
.shadow {
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.shadow-sm {
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.shadow-md {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.shadow-lg {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.shadow-xl {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.shadow-2xl {
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

/* 过渡 */
.transition {
    transition-property: color, background-color, border-color, text-decoration-color, fill, stroke, opacity, box-shadow, transform, filter, backdrop-filter, -webkit-backdrop-filter;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 150ms;
}

.transition-all {
    transition-property: all;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 150ms;
}

/* 规范性文件审查建议及立法项目征集系统 - 自定义CSS样式 */

/* 1. 颜色变量定义 */
:root {
    --primary-color: #1e40af;
    --secondary-color: #3b82f6;
}

/* 2. 自定义工具类 */
.content-auto {
    content-visibility: auto;
}

.btn-blue {
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: white;
    font-weight: bold;
    padding: 1rem 3rem;
    border-radius: 0.75rem;
    transition: all 300ms ease;
    transform: scale(1);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    font-size: 1.25rem;
    display: block;
    text-align: center;
}

    .btn-blue:hover {
        transform: scale(1.05);
        box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    }

/* 3. 页面基础样式 */
body {
    background: linear-gradient(135deg, #bfdbfe 0%, #eff6ff 50%, #bfdbfe 100%);
    min-height: 100vh;
}

/* 4. 表单样式 */
.form-container {
    background-color: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.form-group {
    margin-bottom: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
    padding-bottom: 1rem;
}

.form-group-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

/* 5. 字段样式 */
.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: #374151;
    margin-bottom: 0.25rem;
}

.form-required {
    color: #ef4444;
}

.form-input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    transition: all 300ms ease;
}

    .form-input:focus {
        outline: none;
        ring: 2px solid var(--secondary-color);
        border-color: var(--secondary-color);
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    }

.form-error {
    font-size: 0.75rem;
    color: #ef4444;
    margin-top: 0.25rem;
    display: none;
}

/* 6. 文本域样式 */
.form-textarea {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    transition: all 300ms ease;
    resize: vertical;
}

    .form-textarea:focus {
        outline: none;
        ring: 2px solid var(--secondary-color);
        border-color: var(--secondary-color);
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    }

/* 7. 验证码样式 */
.captcha-container {
    display: flex;
    align-items: center;
}

.captcha-canvas {
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    cursor: pointer;
    background-color: white;
    transition: all 300ms ease;
    margin-right: 1rem;
}

    .captcha-canvas:hover {
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    }

.captcha-hint {
    font-size: 0.75rem;
    color: #6b7280;
    margin-top: 0.5rem;
}

/* 8. 提交按钮样式 */
.submit-button {
    background-color: var(--primary-color);
    color: white;
    font-weight: bold;
    padding: 0.5rem 2rem;
    border-radius: 0.5rem;
    transition: all 300ms ease;
    transform: scale(1);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

    .submit-button:hover {
        background-color: var(--secondary-color);
        transform: scale(1.05);
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    }

/* 9. Tab组件样式 */
.tabs-container {
    border-bottom: 1px solid #e5e7eb;
}

.tabs-list {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: -1px;
    text-align: center;
    font-size: 0.875rem;
    font-weight: 500;
}

.tab-item {
    margin-right: 0.5rem;
}

.tab-link {
    display: inline-block;
    padding: 1rem;
    border-bottom: 2px solid transparent;
    color: #6b7280;
    border-radius: 0.375rem 0.375rem 0 0;
    transition: all 300ms ease;
}

    .tab-link.active {
        border-bottom-color: var(--primary-color);
        color: var(--primary-color);
    }

    .tab-link:not(.active) {
        border-bottom-color: transparent;
        color: #6b7280;
    }

.tab-content {
    margin-top: 1.5rem;
}

    .tab-content.hidden {
        display: none;
    }

/* 10. 标题样式 */
.page-title {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.section-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.group-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

/* 11. 文本样式 */
.text-normal {
    color: #374151;
    margin-bottom: 1rem;
}

.text-small {
    font-size: 0.75rem;
    color: #6b7280;
    margin-top: 0.5rem;
}

/* 12. 间距工具类 */
.mb-1 {
    margin-bottom: 0.25rem;
}

.mb-2 {
    margin-bottom: 0.5rem;
}

.mb-3 {
    margin-bottom: 0.75rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

.mb-6 {
    margin-bottom: 1.5rem;
}

.mt-1 {
    margin-top: 0.25rem;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-3 {
    margin-top: 0.75rem;
}

.mt-4 {
    margin-top: 1rem;
}

.mt-6 {
    margin-top: 1.5rem;
}

.px-2 {
    padding-left: 0.5rem;
    padding-right: 0.5rem;
}

.px-3 {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
}

.px-4 {
    padding-left: 1rem;
    padding-right: 1rem;
}

.py-1 {
    padding-top: 0.25rem;
    padding-bottom: 0.25rem;
}

.py-2 {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

.py-3 {
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
}

.py-4 {
    padding-top: 1rem;
    padding-bottom: 1rem;
}

/* 13. 布局工具类 */
.container {
    max-width: 72rem;
    margin-left: auto;
    margin-right: auto;
}

.grid {
    display: grid;
}

.grid-cols-1 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
}

@media (min-width: 768px) {
    .md\:grid-cols-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.gap-4 {
    gap: 1rem;
}

.flex {
    display: flex;
}

.px-3 {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
}

.border-gray-300 {
    --tw-border-opacity: 1;
    border-color: rgb(209 213 219 / var(--tw-border-opacity, 1));
}

.border {
    border-width: 1px;
}

.rounded-md {
    border-radius: 0.375rem;
}

.w-full {
    width: 100%;
}

.mb-16 {
    margin-bottom: 1.6rem;
}

.mx-6 {
    margin: 0 0.6rem;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

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

.shadow-lg {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.shadow-xl {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.rounded-lg {
    border-radius: 0.5rem;
}

.rounded-xl {
    border-radius: 0.75rem;
}

/* 14. 响应式工具类 */
@media (min-width: 640px) {
    .sm\:flex-row {
        flex-direction: row;
    }
}

@media (min-width: 768px) {
    .md\:text-6xl {
        font-size: 3.75rem;
        line-height: 1;
    }
}

/* 15. 过渡动画 */
.transition-all {
    transition-property: all;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 300ms;
}

.transform {
    transform: translateZ(0);
}

.hover\:scale-105:hover {
    transform: scale(1.05);
}

/* 16. 背景样式 */
.bg-white {
    background-color: white;
}

.bg-gradient-to-br {
    background-image: linear-gradient(to bottom right, var(--tw-gradient-stops));
}

.from-blue-200 {
    --tw-gradient-from: #bfdbfe;
    --tw-gradient-to: rgba(191, 219, 254, 0);
    --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to);
}

.via-blue-100 {
    --tw-gradient-stops: var(--tw-gradient-from), #eff6ff, var(--tw-gradient-to);
}

.to-blue-200 {
    --tw-gradient-to: #bfdbfe;
}

/* 17. 文本颜色 */
.text-primary {
    color: var(--primary-color);
}

.text-secondary {
    color: var(--secondary-color);
}

.text-gray-500 {
    color: #6b7280;
}

.text-gray-700 {
    color: #374151;
}

.text-red-500 {
    color: #ef4444;
}

.text-white {
    color: white;
}

/* 18. 字体样式 */
.font-bold {
    font-weight: 700;
}

.font-semibold {
    font-weight: 600;
}

.font-medium {
    font-weight: 500;
}

.text-lg {
    font-size: 1.125rem;
    line-height: 1.75rem;
}

.text-md {
    font-size: 1rem;
    line-height: 1.5rem;
}

.text-sm {
    font-size: 0.875rem;
    line-height: 1.25rem;
}

.text-xs {
    font-size: 0.75rem;
    line-height: 1rem;
}

.text-xl {
    font-size: 1.25rem;
    line-height: 1.75rem;
}

.text-2xl {
    font-size: 1.5rem;
    line-height: 2rem;
}

.text-5xl {
    font-size: 3rem;
    line-height: 1;
}

/* 19. 边框样式 */
.border {
    border-width: 1px;
}

.border-gray-200 {
    border-color: #e5e7eb;
}

.border-primary {
    border-color: var(--primary-color);
}

.border-transparent {
    border-color: transparent;
}

.border-b {
    border-bottom-width: 1px;
}

.border-b-2 {
    border-bottom-width: 2px;
}

/* 20. 显示状态 */
.hidden {
    display: none;
}

.active {
    display: block;
}

/* 21. 辅助功能 */
.focus\:outline-none:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
}

.focus\:ring-2:focus {
    ring: 2px solid var(--tw-ring-color);
}

.focus\:ring-blue-500:focus {
    --tw-ring-color: var(--secondary-color);
}

.focus\:ring-offset-2:focus {
    --tw-ring-offset-width: 2px;
}

/* 22. 其他实用工具 */
.text-center {
    text-align: center;
}

.block {
    display: block;
}

.inline-block {
    display: inline-block;
}

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

.-mb-px {
    margin-bottom: -1px;
}

.cursor-pointer {
    cursor: pointer;
}

.resize-vertical {
    resize: vertical;
}