/* ============================================
   全局样式和CSS变量 - 现代化设计
   ============================================ */

:root {
    /* 颜色变量 - 现代优雅配色方案 */
    --color-primary: #2563eb;
    --color-primary-dark: #1e40af;
    --color-primary-light: #3b82f6;
    --color-primary-gradient: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    --color-secondary: #6366f1;
    --color-accent: #f59e0b;
    --color-accent-light: #fbbf24;
    --color-accent-bright: #fcd34d;
    --color-accent-gradient: linear-gradient(135deg, #f59e0b 0%, #fbbf24 50%, #fcd34d 100%);
    
    /* 文本颜色 - 优雅深色 */
    --color-text: #1f2937;
    --color-text-light: #374151;
    --color-text-lighter: #6b7280;
    --color-text-white: #ffffff;
    
    /* 背景颜色 - 清爽白色系 */
    --color-bg: #ffffff;
    --color-bg-light: #f9fafb;
    --color-bg-lighter: #f3f4f6;
    --color-bg-dark: #1e40af;
    --color-bg-nav: #ffffff;
    --color-bg-gradient: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    
    /* 边框颜色 - 柔和边框 */
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;
    --color-border-dark: #d1d5db;
    
    /* 状态颜色 */
    --color-success: #10b981;
    --color-error: #ef4444;
    --color-warning: #f59e0b;
    --color-info: #3b82f6;
    
    /* 字体变量 */
    --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --font-family-heading: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-base: 15px;
    --font-size-small: 13px;
    --font-size-large: 17px;
    --font-size-title: 24px;
    --font-size-logo: 32px;
    --font-size-hero: 48px;
    
    /* 间距变量 - 更大的间距 */
    --spacing-xs: 6px;
    --spacing-sm: 12px;
    --spacing-md: 20px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;
    --spacing-xxxl: 96px;
    
    /* 布局变量 */
    --container-max-width: 1400px;
    --border-radius: 8px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    --border-radius-full: 9999px;
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* 阴影变量 - 更柔和的阴影，降低强度 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --shadow-md: 0 2px 4px -1px rgba(0, 0, 0, 0.06), 0 1px 2px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 4px 8px -2px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 8px 16px -4px rgba(0, 0, 0, 0.08), 0 4px 8px -4px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 12px 24px -6px rgba(0, 0, 0, 0.12);
    --shadow-primary: 0 6px 16px -4px rgba(37, 99, 235, 0.25);
}

/* ============================================
   重置和基础样式
   ============================================ */

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    color: var(--color-text);
    background: linear-gradient(180deg, #f9fafb 0%, #ffffff 100%);
    background-attachment: fixed;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ============================================
   工具类
   ============================================ */

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

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ============================================
   顶部导航栏 - 现代化设计
   ============================================ */

.top-header {
    background: var(--color-primary-gradient);
    color: var(--color-text-white);
    padding: var(--spacing-sm) 0;
    font-size: var(--font-size-small);
    box-shadow: var(--shadow-sm);
    position: relative;
    z-index: 100;
}

.top-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary-gradient);
}

.top-header__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-header__welcome {
    margin: 0;
    font-weight: 500;
    opacity: 0.9;
}

.top-header__nav {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.top-header__link {
    color: rgba(255, 255, 255, 0.9);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-weight: 500;
    text-decoration: none;
}

.top-header__link:hover {
    text-decoration: underline;
}

/* ============================================
   主导航栏 - 更大气
   ============================================ */

.main-nav {
    background-color: var(--color-bg-nav);
    padding: var(--spacing-lg) 0;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 99;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid var(--color-border);
}

.main-nav__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.main-nav__brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.main-nav__logo {
    margin: 0;
    margin-bottom: -4px;
    text-align: center;
}

.main-nav__logo a {
    font-size: var(--font-size-logo);
    font-weight: 700;
    background: var(--color-primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    letter-spacing: -0.5px;
    font-family: var(--font-family-heading);
    text-decoration: none;
    color: transparent;
    display: inline-block;
}

.main-nav__domain {
    font-size: 18px;
    color: var(--color-text-light);
    margin: 0;
    margin-top: -4px;
    font-weight: 500;
    text-align: center;
}

.main-nav__menu {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.main-nav__item {
    margin: 0;
}

.main-nav__link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--color-text);
    font-weight: 600;
    border-radius: var(--border-radius);
    position: relative;
    font-size: var(--font-size-base);
}

.main-nav__link::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--border-radius);
    background: var(--color-primary-gradient);
    opacity: 0;
    z-index: -1;
}

.main-nav__link:hover {
    color: var(--color-text-white);
}

.main-nav__link:hover::before {
    opacity: 1;
}

.main-nav__link--active {
    color: var(--color-text-white);
    background: var(--color-primary-gradient);
    box-shadow: var(--shadow-primary);
}

.main-nav__link--active::before {
    opacity: 1;
}

/* ============================================
   主内容区
   ============================================ */

.main-content {
    padding: 0;
    min-height: calc(100vh - 300px);
}

.main-content__grid {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: var(--spacing-xxl);
    align-items: start;
    padding: var(--spacing-xxl) 0;
}

/* ============================================
   左侧内容区 - 现代化卡片
   ============================================ */

.content-left {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* ============================================
   英雄区域 - 大气设计（全宽背景）
   ============================================ */

.hero-section {
    background: var(--color-primary-gradient);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xxxl) 0;
    min-height: 600px;
    position: relative;
    overflow: hidden;
    border: none;
    width: 100%;
    margin: 0;
}

.hero-section__wrapper {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: var(--spacing-xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-section__content {
    position: relative;
    z-index: 2;
    text-align: left;
    width: 100%;
}

.hero-section__login {
    position: relative;
    z-index: 2;
}

.hero-section__title {
    font-size: 64px;
    font-weight: 800;
    color: var(--color-text-white);
    margin: 0 0 var(--spacing-lg) 0;
    font-family: var(--font-family-heading);
    letter-spacing: -1px;
    line-height: 1.1;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    animation: fadeInUp 0.8s ease-out;
}

.hero-section__slogan {
    font-size: var(--font-size-large);
    color: rgba(255, 255, 255, 0.95);
    margin: 0 0 var(--spacing-xxl) 0;
    line-height: 1.8;
    font-weight: 500;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-section__actions {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: flex-start;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-section__decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    z-index: 1;
    pointer-events: none;
}

.hero-section__pattern {
    position: absolute;
    width: 200%;
    height: 200%;
    top: -50%;
    left: -50%;
    background-image: 
        radial-gradient(circle at 2px 2px, rgba(255, 255, 255, 0.15) 1px, transparent 0);
    background-size: 40px 40px;
    animation: patternMove 20s linear infinite;
    opacity: 0.3;
}

@keyframes patternMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(40px, 40px);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   右侧内容区
   ============================================ */

.content-right {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    position: sticky;
    top: 120px;
}

/* ============================================
   登录表单 - 精美设计
   ============================================ */

.login-section {
    background: rgba(255, 255, 255, 0.98);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.08);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    position: relative;
    backdrop-filter: blur(10px);
}

/* 兼容帝国CMS 表格登录样式，在登录卡片内美化 tableborder */
.login-section .tableborder {
    width: 100%;
    border-collapse: collapse;
    background-color: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    font-size: var(--font-size-sm);
}

.login-section .tableborder td {
    padding: 8px 10px;
}

.login-section .tableborder .header td {
    background-color: var(--color-primary-light);
    color: #ffffff;
    font-weight: 600;
    text-align: left;
}

.login-section__title {
    font-size: var(--font-size-title);
    font-weight: 700;
    margin: 0 0 var(--spacing-lg) 0;
    color: var(--color-text);
    text-align: left;
    font-family: var(--font-family-heading);
    background: var(--color-primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-form__group {
    margin-bottom: var(--spacing-md);
}

.login-form__group:last-of-type {
    margin-bottom: 0;
}

.login-form__label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-small);
    color: var(--color-text);
    font-weight: 600;
    line-height: 1.4;
}

.login-form__label--inline {
    display: inline-block;
    margin-bottom: 0;
    margin-right: var(--spacing-sm);
    white-space: nowrap;
    line-height: 38px;
}

.login-form__row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.login-form__input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    flex: 1;
}

.login-form__input-wrapper--flex {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1;
}

.login-form__input-wrapper--flex .login-form__input {
    flex: 1;
    min-width: 0;
}

.login-form__input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    background-color: var(--color-bg-light);
    color: var(--color-text);
    font-weight: 400;
    min-height: 38px;
    box-sizing: border-box;
}

.login-form__input:hover {
    border-color: var(--color-primary-light);
    background-color: var(--color-bg);
}

.login-form__input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background-color: var(--color-bg);
}

.login-form__input::placeholder {
    color: var(--color-text-lighter);
    font-weight: 400;
}

.login-form__captcha-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.login-form__captcha-wrapper {
    display: flex;
    gap: var(--spacing-sm);
    align-items: stretch;
    flex: 1;
}

.login-form__input--captcha {
    flex: 1;
    min-width: 0;
}

.captcha-display {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0 var(--spacing-sm);
    background: transparent;
    border: none;
    border-radius: var(--border-radius);
    min-width: 90px;
    height: 100%;
    min-height: 38px;
    justify-content: center;
    box-shadow: none;
    cursor: pointer;
    flex-shrink: 0;
}

.captcha-display:hover {
    background: transparent;
}

.captcha-display__code {
    font-size: var(--font-size-small);
    font-weight: 700;
    color: var(--color-text-white);
    letter-spacing: 1.5px;
    font-family: 'Courier New', monospace;
}

.captcha-display__link {
    display: inline-block;
    text-decoration: none;
    cursor: pointer;
}

.captcha-display__image {
    height: 100%;
    min-height: 38px;
    max-width: 120px;
    cursor: pointer;
    border-radius: var(--border-radius);
    display: block;
}

.captcha-display__refresh {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: var(--font-size-small);
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    color: var(--color-text);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: color 0.3s ease;
    text-decoration: none;
}

.captcha-display__refresh:hover {
    background: transparent;
    color: var(--color-primary);
}

.login-form__forgot {
    margin: 0;
    text-align: right;
    flex-shrink: 0;
}

.login-form__forgot-link {
    font-size: var(--font-size-small);
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
}

.login-form__forgot-link:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.login-form__actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
}

.login-form__actions-row {
    display: flex;
    gap: 10px;
    width: 100%;
}


.btn--login-primary {
    flex: 1;
    padding: 0 20px;
    background: var(--color-primary);
    color: var(--color-text-white);
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    min-height: 20px;
    height: 20px;
    line-height: 20px;
    letter-spacing: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn--login-primary:hover {
    background: var(--color-primary-light);
}

.btn--login-primary:active {
    background: var(--color-primary-dark);
}

.btn--login-secondary {
    width: 100%;
    padding: 14px 20px;
    background: var(--color-accent-gradient);
    color: var(--color-text-white);
    border: none;
    border-radius: 8px;
    font-size: 18px !important;
    font-weight: 700;
    cursor: pointer;
    min-height: 50px;
    line-height: 1.5;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
    position: relative;
    overflow: hidden;
}

.btn--login-secondary span {
    display: block;
    position: relative;
    z-index: 1;
    font-size: 18px !important;
}

.btn--login-secondary:hover {
    color: var(--color-text-white);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.35);
    background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent-bright) 100%);
}

.btn--login-register {
    flex: 1;
    padding: 0 20px;
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    min-height: 20px;
    height: 20px;
    line-height: 20px;
    letter-spacing: 0;
    position: relative;
    overflow: visible;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.btn--login-register span {
    display: block;
}

.btn--login-register:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: var(--color-bg-light);
}

.btn--login-register:active {
    background: var(--color-bg-light);
    border-color: var(--color-border);
}

/* ============================================
   按钮样式 - 现代化
   ============================================ */

.btn {
    flex: 1;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    border: none;
    letter-spacing: 0.5px;
}

.btn--primary {
    background: var(--color-primary-gradient);
    color: var(--color-text-white);
    box-shadow: var(--shadow-primary);
}

.btn--primary:hover {
    box-shadow: var(--shadow-xl), var(--shadow-primary);
}

.btn--secondary {
    background-color: var(--color-bg-light);
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

.btn--secondary:hover {
    background-color: var(--color-bg);
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.btn--hero {
    flex: 0 1 auto;
    min-width: 180px;
    padding: 10px var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 700;
    border-radius: var(--border-radius-lg);
    letter-spacing: 1px;
    text-transform: none;
}

.btn--hero.btn--outline {
    background-color: var(--color-text-white);
    color: var(--color-primary);
    border: 2px solid var(--color-text-white);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn--hero.btn--outline:hover {
    background-color: rgba(255, 255, 255, 0.95);
    border-color: var(--color-text-white);
    color: var(--color-primary-dark);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.btn--hero.btn--primary {
    background: var(--color-accent-gradient);
    color: var(--color-text-white);
    border: 2px solid transparent;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.btn--hero.btn--primary:hover {
    background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent-bright) 100%);
    color: var(--color-text-white);
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.4);
}

/* ============================================
   续费横幅 - 吸引眼球
   ============================================ */

.renewal-banner {
    background: var(--color-primary-gradient);
    color: var(--color-text-white);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--border-radius-xl);
    text-align: center;
    box-shadow: var(--shadow-xl);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.renewal-banner:hover {
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.15);
}

.renewal-banner__text {
    margin: 0;
    font-size: var(--font-size-large);
    font-weight: 700;
    position: relative;
    z-index: 1;
    letter-spacing: 1px;
}

/* ============================================
   平台介绍 - 精美卡片
   ============================================ */

.intro-section {
    background: var(--color-bg);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-xl);
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.intro-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--color-primary-gradient);
}

.intro-section__title {
    font-size: var(--font-size-title);
    font-weight: 700;
    margin: 0 0 var(--spacing-lg) 0;
    color: var(--color-text);
    font-family: var(--font-family-heading);
}

.intro-section__content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.intro-section__text {
    margin: 0;
    color: var(--color-text-light);
    line-height: 1.9;
    text-align: justify;
    font-size: var(--font-size-base);
}

.intro-section__link {
    color: var(--color-primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    align-self: flex-end;
}

.intro-section__link:hover {
    color: var(--color-primary-dark);
}

/* ============================================
   功能特性 - 现代化网格
   ============================================ */

.features-section {
    background: var(--color-bg);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-xl);
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.features-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--color-primary-gradient);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    background: var(--color-bg-light);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--color-primary-gradient);
    transform: scaleX(0);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    background: var(--color-bg);
    border-color: var(--color-border);
    box-shadow: var(--shadow-lg);
}

.feature-card__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(249, 250, 251, 0.1) 100%);
    border-radius: var(--border-radius-lg);
}

.feature-card:hover .feature-card__icon {
    background: var(--color-primary-gradient);
    color: var(--color-text-white);
}

.feature-card__title {
    font-size: var(--font-size-large);
    font-weight: 700;
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--color-text);
    font-family: var(--font-family-heading);
}

.feature-card__description {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    margin: 0;
    line-height: 1.7;
}

/* ============================================
   信息标签页 - 现代化设计
   ============================================ */

.info-section {
    background: var(--color-bg);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.info-tabs {
    display: flex;
    border-bottom: 2px solid var(--color-border);
    background: var(--color-bg-light);
}

.info-tabs__tab {
    flex: 1;
    padding: var(--spacing-lg) var(--spacing-md);
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    font-weight: 600;
    position: relative;
}

.info-tabs__tab::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 3px;
    background: var(--color-primary-gradient);
    transform: translateX(-50%);
}

.info-tabs__tab:hover {
    color: var(--color-primary);
    background-color: rgba(37, 99, 235, 0.05);
}

.info-tabs__tab:hover::after {
    width: 80%;
}

.info-tabs__tab--active {
    color: var(--color-primary);
    background-color: var(--color-bg);
}

.info-tabs__tab--active::after {
    width: 100%;
}

.info-content {
    position: relative;
}

.info-content__panel {
    display: none;
    padding: var(--spacing-xl);
    min-height: 300px;
}

.info-content__panel--active {
    display: block;
}

.info-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.info-list li {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-light);
}

.info-list li:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.info-list li a {
    color: var(--color-text-light);
    font-size: var(--font-size-base);
    line-height: 1.8;
    display: block;
    text-decoration: none;
}

.info-list li a:hover {
    color: var(--color-primary);
}

/* 兼容带 class 的情况 */
.info-list__item {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-light);
}

.info-list__item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.info-list__link {
    color: var(--color-text-light);
    font-size: var(--font-size-base);
    line-height: 1.8;
    display: block;
    text-decoration: none;
}

.info-list__link:hover {
    color: var(--color-primary);
}

/* ============================================
   页脚 - 现代化设计
   ============================================ */

.footer {
    background: var(--color-primary-gradient);
    color: var(--color-text-white);
    padding: var(--spacing-xxl) 0 var(--spacing-xl);
    margin-top: var(--spacing-xxxl);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--color-primary-gradient);
}

.footer__content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.footer__links-container {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    animation: fadeIn 0.3s ease-in-out;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: var(--border-radius);
    display: none; /* 默认隐藏 */
}

.footer__links-container.show {
    display: block !important;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.footer__links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    justify-content: center;
}

.footer__title {
    font-size: var(--font-size-large);
    font-weight: 700;
    margin: 0;
    font-family: var(--font-family-heading);
}

.footer__link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    display: inline-block;
}

.footer__nav-link--toggle {
    cursor: pointer;
}

.footer__nav {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    justify-content: center;
}

.footer__nav-link {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-base);
    font-weight: 500;
    position: relative;
}

.footer__nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary-light);
}

.footer__nav-link:hover {
    color: var(--color-text-white);
}

.footer__nav-link:hover::after {
    width: 100%;
}

.footer__copyright {
    text-align: center;
    font-size: var(--font-size-small);
    color: rgba(255, 255, 255, 0.5);
    margin: var(--spacing-lg) 0 0 0;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ============================================
   浮动Q&A按钮 - 现代化
   ============================================ */

.qa-button {
    position: fixed;
    right: var(--spacing-xl);
    bottom: var(--spacing-xl);
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--color-accent-gradient);
    color: var(--color-text-white);
    box-shadow: var(--shadow-2xl);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: 3px solid rgba(255, 255, 255, 0.3);
}

.qa-button:hover {
    box-shadow: 0 8px 20px rgba(245, 158, 11, 0.4);
}

.qa-button__text {
    font-size: var(--font-size-base);
    font-weight: 700;
    letter-spacing: 1px;
}

/* ============================================
   响应式设计
   ============================================ */

@media (max-width: 1024px) {
    .main-content__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .content-right {
        position: static;
    }
    
    .hero-section__wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .hero-section {
        min-height: auto;
        padding: var(--spacing-xxl) 0;
    }
    
    .hero-section__title {
        font-size: 48px;
        text-align: center;
    }
    
    .hero-section__slogan {
        text-align: center;
    }
    
    .hero-section__actions {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-base: 14px;
        --font-size-logo: 24px;
        --spacing-md: 16px;
        --spacing-lg: 24px;
        --spacing-xl: 32px;
    }
    
    .top-header__content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .top-header__nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .main-nav {
        padding: var(--spacing-md) 0;
    }
    
    .main-nav__content {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
    }
    
    .main-nav__menu {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        width: 100%;
    }
    
    .main-nav__link {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .hero-section {
        padding: var(--spacing-xxl) 0;
        min-height: auto;
    }
    
    .hero-section__wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .hero-section__title {
        font-size: 40px;
        text-align: center;
    }
    
    .hero-section__slogan {
        font-size: var(--font-size-base);
        text-align: center;
    }
    
    .hero-section__actions {
        flex-direction: column;
        gap: var(--spacing-md);
        justify-content: center;
    }
    
    .btn--hero {
        width: 100%;
        min-width: auto;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .login-form__actions {
        flex-direction: column;
    }
    
    .footer__content {
        text-align: center;
    }
    
    .footer__links {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .footer__nav {
        justify-content: center;
    }
    
    .qa-button {
        width: 56px;
        height: 56px;
        right: var(--spacing-md);
        bottom: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .main-nav__logo {
        font-size: 20px;
    }
    
    .login-section,
    .intro-section,
    .features-section,
    .info-section {
        padding: var(--spacing-lg);
    }
    
    .hero-section {
        padding: var(--spacing-xl) 0;
        min-height: auto;
    }
    
    .hero-section__wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .hero-section__title {
        font-size: 32px;
        text-align: center;
    }
    
    .hero-section__slogan {
        font-size: var(--font-size-small);
        text-align: center;
    }
    
    .hero-section__actions {
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-sm);
    }
    
    .btn--hero {
        width: 100%;
        min-width: auto;
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .feature-card {
        padding: var(--spacing-lg);
    }
}

/* ============================================
   打印样式
   ============================================ */

@media print {
    .top-header,
    .main-nav,
    .footer,
    .qa-button,
    .renewal-banner {
        display: none;
    }
    
    .main-content {
        padding: 0;
    }
    
    .content-right {
        display: none;
    }
}

/* ============================================
   无障碍和可访问性增强
   ============================================ */

*:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--border-radius);
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-contrast: high) {
    :root {
        --color-border: #000000;
        --color-text-light: #000000;
    }
    
    .btn--primary {
        border: 2px solid #000000;
    }
}

/* ============================================
   加载动画
   ============================================ */



/* ============================================
   表单验证样式
   ============================================ */

.login-form__input:invalid:not(:placeholder-shown) {
    border-color: var(--color-error);
}

.login-form__input:valid:not(:placeholder-shown) {
    border-color: var(--color-success);
}

.login-form__group {
    position: relative;
}

.login-form__error {
    display: none;
    color: var(--color-error);
    font-size: var(--font-size-small);
    margin-top: var(--spacing-xs);
    font-weight: 500;
}

.login-form__input:invalid:not(:placeholder-shown) + .login-form__error {
    display: block;
}

.login-form__input--error {
    border-color: var(--color-error) !important;
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1) !important;
}

/* ============================================
   工具提示
   ============================================ */

[data-tooltip] {
    position: relative;
}

[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-bg-dark);
    color: #ffffff;
    font-size: var(--font-size-small);
    border-radius: var(--border-radius);
    white-space: nowrap;
    z-index: 1000;
    margin-bottom: var(--spacing-xs);
    box-shadow: var(--shadow-lg);
}

[data-tooltip]:hover::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--color-bg-dark);
    z-index: 1000;
    margin-bottom: -6px;
}

/* ============================================
   滚动条样式（Webkit浏览器）
   ============================================ */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-light);
    border-radius: var(--border-radius);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary-gradient);
    border-radius: var(--border-radius);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-dark);
}

/* ============================================
   选择文本样式
   ============================================ */

::selection {
    background-color: var(--color-primary);
    color: #ffffff;
}

::-moz-selection {
    background-color: var(--color-primary);
    color: #ffffff;
}

/* ============================================
   资源导航页样式
   ============================================ */

.resources-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl) 0;
    min-height: 60vh;
}

/* 左侧资源类型导航栏 */
.resources-sidebar {
    background: var(--color-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    padding: var(--spacing-md);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.resources-sidebar__header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.resources-sidebar__icon {
    color: var(--color-primary);
    flex-shrink: 0;
}

.resources-sidebar__title {
    font-size: var(--font-size-large);
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
    font-family: var(--font-family-heading);
}

.resources-sidebar__nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.resources-sidebar__link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    font-size: var(--font-size-base);
    font-weight: 500;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.resources-sidebar__link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--color-primary);
    border-radius: 0 2px 2px 0;
    transition: height var(--transition-fast);
}

.resources-sidebar__link:hover {
    background: var(--color-bg-light);
    color: var(--color-primary);
    padding-left: var(--spacing-lg);
}

.resources-sidebar__link:hover::before {
    height: 60%;
}

.resources-sidebar__link:active {
    transform: scale(0.98);
}

.resources-sidebar__link--active {
    background: var(--color-primary-gradient);
    color: var(--color-text-white);
    box-shadow: var(--shadow-md);
    font-weight: 600;
    padding-left: var(--spacing-lg);
}

.resources-sidebar__link--active::before {
    height: 80%;
    background: var(--color-text-white);
    width: 4px;
}

.resources-sidebar__link--active:hover {
    background: var(--color-primary-gradient);
    color: var(--color-text-white);
    box-shadow: var(--shadow-lg);
}

/* 右侧资源入口区域 */
.resources-main {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.resource-section {
    background: var(--color-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    padding: var(--spacing-xl);
}

.resource-section__title {
    font-size: var(--font-size-title);
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 var(--spacing-lg) 0;
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-primary);
    font-family: var(--font-family-heading);
}

.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--spacing-md);
}

.resource-btn {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-light);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    text-align: center;
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.resource-btn:hover {
    background: var(--color-primary);
    color: var(--color-text-white);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.resource-btn--recommended {
    color: var(--color-error);
    font-weight: 600;
    border-color: var(--color-error);
}

.resource-btn--recommended:hover {
    background: var(--color-error);
    color: var(--color-text-white);
    border-color: var(--color-error);
}

.resource-btn--blue {
    color: var(--color-primary);
    font-weight: 600;
    border-color: var(--color-primary);
}

.resource-btn--blue:hover {
    background: var(--color-primary);
    color: var(--color-text-white);
    border-color: var(--color-primary);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .resources-layout {
        grid-template-columns: 200px 1fr;
        gap: var(--spacing-lg);
    }

    .resource-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--spacing-sm);
    }
}

@media (max-width: 768px) {
    .resources-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .resources-sidebar {
        position: static;
    }

    .resources-sidebar__nav {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--spacing-sm);
    }

    .resource-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    .resource-section {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .resource-grid {
        grid-template-columns: 1fr;
    }

    .resources-sidebar__nav {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   登录页面样式
   ============================================ */

.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 300px);
    padding: var(--spacing-xxl) 0;
}

.login-page__wrapper {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
}

.login-page__header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.login-page__title {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 var(--spacing-sm) 0;
    font-family: var(--font-family-heading);
    background: var(--color-primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-page__subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-lighter);
    margin: 0;
}

.login-section--page {
    background: var(--color-bg);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-xl);
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
}

.login-page__footer {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.login-page__help {
    font-size: var(--font-size-small);
    color: var(--color-text-lighter);
    margin: var(--spacing-xs) 0;
}

.login-page__link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    margin-left: var(--spacing-xs);
}

/* 登录后显示界面样式 */
.login-section--logged {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
}

.logged-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.logged-info__header {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.logged-info__breadcrumb {
    font-size: 13px;
    color: #9ca3af;
    margin: 0;
    line-height: 1.5;
    display: flex;
    align-items: center;
    gap: 4px;
}

.logged-info__arrow {
    color: #6b7280;
    font-weight: 700;
}

.logged-info__welcome {
    font-size: 15px;
    color: var(--color-text);
    line-height: 1.6;
    margin: 0;
    font-weight: 400;
}

.logged-info__username {
    color: #e43a19;
    font-weight: 700;
    font-size: 16px;
}

.logged-info__member {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.logged-info__level {
    font-size: 15px;
    color: var(--color-text);
    font-weight: 500;
    margin: 0;
    flex: 1;
}

.logged-info__validity {
    font-size: 13px;
    color: #9ca3af;
    margin: 0;
    text-align: right;
    white-space: nowrap;
}

.logged-info__menu {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.logged-info__action-link,
.logged-info__logout {
    font-size: 14px;
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    padding: 0;
    display: inline-block;
    transition: color 0.2s ease;
    white-space: nowrap;
}

.logged-info__action-link:hover,
.logged-info__logout:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.btn--renewal {
    width: 100%;
    padding: 20px 24px;
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    color: var(--color-text-white);
    border: none;
    border-radius: 8px;
    font-size: 22px;
    font-weight: 700;
    cursor: pointer;
    min-height: 64px;
    line-height: 1.4;
    letter-spacing: 1px;
    box-shadow: 0 4px 16px rgba(255, 107, 53, 0.3);
    position: relative;
    overflow: hidden;
    margin-top: var(--spacing-sm);
}

.btn--renewal span {
    display: block;
    position: relative;
    z-index: 1;
}

.btn--renewal:hover {
    box-shadow: 0 6px 24px rgba(255, 107, 53, 0.4);
    background: linear-gradient(135deg, #ff7a4a 0%, #ffa64d 100%);
    transform: translateY(-1px);
}

.login-page__link:hover {
    text-decoration: underline;
    color: var(--color-primary-dark);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .login-page {
        padding: var(--spacing-xl) 0;
        min-height: calc(100vh - 250px);
    }

    .login-page__wrapper {
        max-width: 100%;
        padding: 0 var(--spacing-md);
    }

    .login-page__title {
        font-size: 28px;
    }

    .login-section--page {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .login-page__title {
        font-size: 24px;
    }

    .login-section--page {
        padding: var(--spacing-md);
    }
}

/* ============================================
   注册页面样式
   ============================================ */

.register-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 300px);
    padding: var(--spacing-xxl) 0;
}

.register-page__wrapper {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
}

.register-page__header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.register-page__title {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 var(--spacing-sm) 0;
    font-family: var(--font-family-heading);
    background: var(--color-primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.register-page__subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-lighter);
    margin: 0;
}

.register-section--page {
    background: var(--color-bg);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-xl);
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
}

/* 注册表单样式 - 复用登录表单样式 */
.register-form {
    width: 100%;
}

.register-form__group {
    margin-bottom: var(--spacing-md);
}

.register-form__group:last-of-type {
    margin-bottom: 0;
}

.register-form__row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.register-form__label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-small);
    color: var(--color-text);
    font-weight: 600;
    line-height: 1.4;
}

.register-form__label--inline {
    display: inline-block;
    margin-bottom: 0;
    margin-right: var(--spacing-sm);
    white-space: nowrap;
    line-height: 38px;
}

.register-form__input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    flex: 1;
}

.register-form__input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    background-color: var(--color-bg-light);
    color: var(--color-text);
    font-weight: 400;
    min-height: 38px;
    box-sizing: border-box;
}

.register-form__input:hover {
    border-color: var(--color-primary-light);
    background-color: var(--color-bg);
}

.register-form__input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background-color: var(--color-bg);
}

.register-form__input::placeholder {
    color: var(--color-text-lighter);
}

.register-form__captcha-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.register-form__captcha-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1;
}

.register-form__input--captcha {
    flex: 1;
    min-width: 0;
}

/* 协议复选框 */
.register-form__agreement {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border-radius: var(--border-radius);
}

.register-form__checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-size-small);
    color: var(--color-text);
    line-height: 1.6;
}

.register-form__checkbox {
    margin-top: 2px;
    width: 16px;
    height: 16px;
    cursor: pointer;
    flex-shrink: 0;
    accent-color: var(--color-primary);
}

.register-form__checkbox-text {
    flex: 1;
}

.register-form__link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
}

.register-form__link:hover {
    text-decoration: underline;
    color: var(--color-primary-dark);
}

/* 注册按钮 */
.register-form__actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.btn--register-primary {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--color-primary);
    color: var(--color-text-white);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    min-height: 44px;
    line-height: 1.5;
    letter-spacing: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn--register-primary:hover {
    background: var(--color-primary-light);
}

.btn--register-primary:active {
    background: var(--color-primary-dark);
}

.btn--register-secondary {
    width: 100%;
    padding: 14px 20px;
    background: var(--color-accent-gradient);
    color: var(--color-text-white);
    border: none;
    border-radius: 8px;
    font-size: 18px !important;
    font-weight: 700;
    cursor: pointer;
    min-height: 50px;
    line-height: 1.5;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
    position: relative;
    overflow: hidden;
}

.btn--register-secondary span {
    display: block;
    position: relative;
    z-index: 1;
    font-size: 18px !important;
}

.btn--register-secondary:hover {
    color: var(--color-text-white);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.35);
    background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent-bright) 100%);
}

.register-page__footer {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.register-page__help {
    font-size: var(--font-size-small);
    color: var(--color-text-lighter);
    margin: var(--spacing-xs) 0;
}

.register-page__link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    margin-left: var(--spacing-xs);
}

.register-page__link:hover {
    text-decoration: underline;
    color: var(--color-primary-dark);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .register-page {
        padding: var(--spacing-xl) 0;
        min-height: calc(100vh - 250px);
    }

    .register-page__wrapper {
        max-width: 100%;
        padding: 0 var(--spacing-md);
    }

    .register-page__title {
        font-size: 28px;
    }

    .register-section--page {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .register-page__title {
        font-size: 24px;
    }

    .register-section--page {
        padding: var(--spacing-md);
    }

    .register-form__agreement {
        padding: var(--spacing-sm);
    }
}

/* ============================================
   会员中心页面样式
   ============================================ */

.member-center {
    padding: var(--spacing-xl) 0;
}

/* 会员信息卡片 */
.member-info-card {
    background: var(--color-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    padding: var(--spacing-md);
}

.member-info-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.member-info-card__left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

.member-info-card__avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--color-primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-white);
    flex-shrink: 0;
}

.member-info-card__avatar svg {
    width: 28px;
    height: 28px;
}

.member-info-card__details {
    flex: 1;
}

.member-info-card__name {
    font-size: var(--font-size-large);
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 4px 0;
    font-family: var(--font-family-heading);
}

.member-info-card__level {
    font-size: var(--font-size-small);
    color: var(--color-text-lighter);
    margin: 2px 0;
}

.member-info-card__level-badge {
    display: inline-block;
    padding: 2px 6px;
    background: var(--color-accent-gradient);
    color: var(--color-text-white);
    border-radius: var(--border-radius);
    font-size: 11px;
    font-weight: 600;
    margin-left: var(--spacing-xs);
}

.member-info-card__email {
    font-size: var(--font-size-small);
    color: var(--color-text-lighter);
    margin: 2px 0 0 0;
}

.member-info-card__stats {
    display: flex;
    gap: var(--spacing-lg);
    flex-shrink: 0;
}

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

.member-stat__label {
    font-size: 11px;
    color: var(--color-text-lighter);
    margin-bottom: 4px;
}

.member-stat__value {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-family-heading);
}

/* 会员布局 */
.member-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: var(--spacing-xl);
}

.member-right {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* 左侧导航菜单 */
.member-sidebar {
    background: var(--color-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    padding: var(--spacing-md);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.member-menu {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.member-menu__item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    font-size: var(--font-size-base);
    font-weight: 500;
    position: relative;
}

.member-menu__item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--color-primary);
    border-radius: 0 2px 2px 0;
    transition: height var(--transition-fast);
}

.member-menu__item:hover {
    background: var(--color-bg-light);
    color: var(--color-primary);
    padding-left: var(--spacing-lg);
}

.member-menu__item:hover::before {
    height: 60%;
}

.member-menu__item:active {
    transform: scale(0.98);
}

.member-menu__item--active {
    background: var(--color-primary-gradient);
    color: var(--color-text-white);
    box-shadow: var(--shadow-md);
    font-weight: 600;
    padding-left: var(--spacing-lg);
}

.member-menu__item--active::before {
    height: 80%;
    background: var(--color-text-white);
    width: 4px;
}

.member-menu__item--active:hover {
    background: var(--color-primary-gradient);
    color: var(--color-text-white);
    box-shadow: var(--shadow-lg);
}

.member-menu__icon {
    flex-shrink: 0;
}

/* 右侧内容区域 */
.member-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.member-panel {
    background: var(--color-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    display: none;
}

.member-panel--active {
    display: block;
}

.member-panel__header {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
}

.member-panel__title {
    font-size: var(--font-size-title);
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
    font-family: var(--font-family-heading);
}

.member-panel__body {
    padding: var(--spacing-xl);
}

/* 会员表单 */
.member-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.member-form__group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.member-form__label {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
}

.member-form__input {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    background-color: var(--color-bg-light);
    color: var(--color-text);
    min-height: 40px;
}

.member-form__input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background-color: var(--color-bg);
}

.member-form__input[readonly] {
    background-color: var(--color-bg-lighter);
    cursor: not-allowed;
}

.member-form__actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.btn--member-primary {
    padding: 12px 32px;
    background: var(--color-primary);
    color: var(--color-text-white);
    border: none;
    border-radius: 6px;
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    flex: 0 0 auto;
    width: auto;
    min-width: 120px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn--member-primary:hover {
    background: var(--color-primary-light);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn--member-secondary {
    padding: var(--spacing-sm) var(--spacing-xl);
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
}

.btn--member-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* 订单表格 */
.order-table {
    overflow-x: auto;
}

.order-table__table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-base);
}

.order-table__table thead {
    background: var(--color-bg-light);
}

.order-table__table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--color-text);
    border-bottom: 2px solid var(--color-border);
}

.order-table__table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
}

.order-table__table tbody tr:hover {
    background: var(--color-bg-light);
}

.order-status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--border-radius);
    font-size: var(--font-size-small);
    font-weight: 600;
}

.order-status--success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.order-action {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
}

.order-action:hover {
    text-decoration: underline;
}

/* 下载记录 */
.download-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.download-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.download-item__info {
    flex: 1;
    min-width: 0;
}

.download-item__title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    margin: 0 0 var(--spacing-xs) 0;
}

.download-item__meta {
    font-size: var(--font-size-small);
    color: var(--color-text-lighter);
    margin: 0;
}

.download-item__time {
    font-size: var(--font-size-small);
    color: var(--color-text-lighter);
    white-space: nowrap;
}

.download-action {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    white-space: nowrap;
}

.download-action:hover {
    text-decoration: underline;
}

/* 充值续费 */
.recharge-section {
    width: 100%;
}

.recharge-section__title {
    font-size: var(--font-size-large);
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 var(--spacing-lg) 0;
    font-family: var(--font-family-heading);
}

.recharge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.recharge-card {
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    position: relative;
    display: flex;
    flex-direction: column;
    transition: all var(--transition-base);
}

.recharge-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.recharge-card--recommended {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-primary);
}

.recharge-card__badge {
    position: absolute;
    top: -12px;
    right: var(--spacing-lg);
    background: var(--color-primary-gradient);
    color: var(--color-text-white);
    padding: 4px 12px;
    border-radius: var(--border-radius);
    font-size: var(--font-size-small);
    font-weight: 600;
}

.recharge-card__header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.recharge-card__name {
    font-size: var(--font-size-large);
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 var(--spacing-md) 0;
    font-family: var(--font-family-heading);
}

.recharge-card__price {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-family-heading);
}

.recharge-card__period {
    font-size: var(--font-size-base);
    color: var(--color-text-lighter);
    font-weight: 400;
}

.recharge-card__features {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-lg) 0;
    flex: 1;
}

.recharge-card__features li {
    padding: var(--spacing-sm) 0;
    color: var(--color-text);
    font-size: var(--font-size-base);
    position: relative;
    padding-left: var(--spacing-lg);
}

.recharge-card__features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 700;
}

.btn--recharge {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--color-bg-light);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
}

.btn--recharge:hover {
    background: var(--color-primary);
    color: var(--color-text-white);
    border-color: var(--color-primary);
}

.btn--recharge-primary {
    background: var(--color-primary);
    color: var(--color-text-white);
    border-color: var(--color-primary);
}

.btn--recharge-primary:hover {
    background: var(--color-primary-light);
}

/* 账户设置 */
.settings-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.settings-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    background: var(--color-bg-light);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.settings-item__info {
    flex: 1;
}

.settings-item__title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    margin: 0 0 var(--spacing-xs) 0;
}

.settings-item__desc {
    font-size: var(--font-size-small);
    color: var(--color-text-lighter);
    margin: 0;
}

.settings-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

.settings-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.settings-switch__slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-border);
    transition: var(--transition-base);
    border-radius: 26px;
}

.settings-switch__slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: var(--color-bg);
    transition: var(--transition-base);
    border-radius: 50%;
}

.settings-switch input:checked + .settings-switch__slider {
    background-color: var(--color-primary);
}

.settings-switch input:checked + .settings-switch__slider:before {
    transform: translateX(24px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .member-layout {
        grid-template-columns: 200px 1fr;
        gap: var(--spacing-lg);
    }

    .member-info-card__stats {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
    }

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

@media (max-width: 768px) {
    .member-layout {
        grid-template-columns: 1fr;
    }

    .member-sidebar {
        position: static;
    }

    .member-menu {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: var(--spacing-xs);
    }

    .member-menu__item {
        white-space: nowrap;
        flex-shrink: 0;
    }

    .member-info-card__header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .member-info-card__left {
        width: 100%;
    }

    .member-info-card__stats {
        width: 100%;
        justify-content: space-around;
    }

    .download-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .order-table {
        font-size: var(--font-size-small);
    }

    .order-table__table th,
    .order-table__table td {
        padding: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .member-panel__body {
        padding: var(--spacing-md);
    }

    .member-form__actions {
        flex-direction: column;
    }

    .settings-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
}

/* ============================================
   平台介绍页面样式
   ============================================ */

.page-header {
    text-align: center;
    padding: var(--spacing-xl) 0 var(--spacing-lg) 0;
    margin-bottom: var(--spacing-xl);
}

.page-header__title {
    font-size: 48px;
    font-weight: 800;
    color: var(--color-text);
    margin: 0 0 var(--spacing-md) 0;
    font-family: var(--font-family-heading);
    letter-spacing: -1px;
    line-height: 1.2;
}

.page-header__subtitle {
    font-size: var(--font-size-large);
    color: var(--color-text-lighter);
    margin: 0;
    font-weight: 500;
}

.platform-intro {
    padding: var(--spacing-xl) 0;
}

.platform-section {
    margin-bottom: var(--spacing-xxl);
    background: var(--color-bg);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.platform-section__title {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 var(--spacing-lg) 0;
    font-family: var(--font-family-heading);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-primary);
}

.platform-section__content {
    line-height: 1.8;
}

.platform-section__text {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    margin: 0 0 var(--spacing-lg) 0;
    line-height: 1.8;
}

.platform-section__text:last-child {
    margin-bottom: 0;
}

.platform-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.platform-feature {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-bg-light);
    border-radius: var(--border-radius);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.platform-feature__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md) auto;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 99, 235, 0.1);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
}

.platform-feature__title {
    font-size: var(--font-size-large);
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 var(--spacing-sm) 0;
    font-family: var(--font-family-heading);
}

.platform-feature__description {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    margin: 0;
    line-height: 1.7;
}

.platform-services {
    list-style: none;
    padding: 0;
    margin: 0;
}

.platform-service {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    margin: 0 0 var(--spacing-md) 0;
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border-radius: var(--border-radius);
    line-height: 1.8;
}

.platform-service:last-child {
    margin-bottom: 0;
}

.platform-service strong {
    color: var(--color-text);
    font-weight: 600;
}

.platform-contact {
    margin-top: var(--spacing-lg);
}

.platform-contact__item {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    margin: 0 0 var(--spacing-md) 0;
    line-height: 1.8;
}

.platform-contact__item:last-child {
    margin-bottom: 0;
}

.platform-contact__item strong {
    color: var(--color-text);
    font-weight: 600;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .page-header__title {
        font-size: 36px;
    }

    .platform-section {
        padding: var(--spacing-lg);
    }

    .platform-section__title {
        font-size: 24px;
    }

    .platform-features {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   新闻列表页面样式
   ============================================ */

.news-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-border);
}

.news-header__title {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 var(--spacing-sm) 0;
    font-family: var(--font-family-heading);
}

.news-header__subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-lighter);
    margin: 0;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.news-item {
    background: var(--color-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.news-item__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-md);
}

.news-item__title {
    margin: 0;
    flex: 1;
}

.news-item__link {
    font-size: var(--font-size-large);
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
    line-height: 1.4;
    transition: color 0.3s ease;
}

.news-item__link:hover {
    color: var(--color-primary);
}

.news-item__date {
    font-size: var(--font-size-small);
    color: var(--color-text-lighter);
    white-space: nowrap;
    flex-shrink: 0;
}

.news-item__content {
    margin-bottom: var(--spacing-md);
}

.news-item__excerpt {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    line-height: 1.8;
    margin: 0;
}

.news-item__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border-light);
}

.news-item__category {
    font-size: var(--font-size-small);
    color: var(--color-primary);
    background: rgba(37, 99, 235, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-weight: 500;
}

.news-item__more {
    font-size: var(--font-size-small);
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.news-item__more:hover {
    color: var(--color-primary-dark);
}

.news-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.news-pagination__pages {
    display: flex;
    gap: var(--spacing-xs);
}

.news-pagination__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-sm);
    font-size: var(--font-size-base);
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    transition: all 0.3s ease;
    font-weight: 500;
}

.news-pagination__link:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: rgba(37, 99, 235, 0.05);
}

.news-pagination__link--active {
    color: var(--color-text-white);
    background: var(--color-primary-gradient);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-primary);
}

.news-pagination__link--prev,
.news-pagination__link--next {
    padding: 0 var(--spacing-md);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .news-header__title {
        font-size: 24px;
    }

    .news-item {
        padding: var(--spacing-md);
    }

    .news-item__header {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .news-item__date {
        align-self: flex-start;
    }

    .news-item__footer {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

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

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

/* ============================================
   新闻详情页面样式
   ============================================ */

.news-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-small);
    color: var(--color-text-lighter);
}

.news-breadcrumb__link {
    color: var(--color-text-lighter);
    text-decoration: none;
    transition: color 0.3s ease;
}

.news-breadcrumb__link:hover {
    color: var(--color-primary);
}

.news-breadcrumb__separator {
    color: var(--color-text-lighter);
}

.news-breadcrumb__current {
    color: var(--color-text);
    font-weight: 500;
}

.news-detail {
    background: var(--color-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-xl);
}

.news-detail__header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-border);
}

.news-detail__title {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 var(--spacing-md) 0;
    font-family: var(--font-family-heading);
    line-height: 1.4;
}

.news-detail__meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    align-items: center;
    font-size: var(--font-size-small);
    color: var(--color-text-lighter);
}

.news-detail__date,
.news-detail__views {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.news-detail__icon {
    color: var(--color-primary);
    flex-shrink: 0;
}

.news-detail__category {
    color: var(--color-primary);
    background: rgba(37, 99, 235, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-weight: 500;
}

.news-detail__content {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    line-height: 1.9;
    margin-bottom: var(--spacing-xl);
}

.news-detail__content h3 {
    font-size: var(--font-size-large);
    font-weight: 700;
    color: var(--color-text);
    margin: var(--spacing-xl) 0 var(--spacing-md) 0;
    font-family: var(--font-family-heading);
}

.news-detail__content h3:first-child {
    margin-top: 0;
}

.news-detail__content p {
    margin: 0 0 var(--spacing-md) 0;
    text-align: justify;
}

.news-detail__content ul {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
    list-style-type: disc;
}

.news-detail__content li {
    margin: var(--spacing-sm) 0;
    line-height: 1.8;
}

.news-detail__content strong {
    color: var(--color-text);
    font-weight: 600;
}

.news-detail__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.news-detail__tags {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.news-detail__tag-label {
    font-size: var(--font-size-small);
    color: var(--color-text-lighter);
    font-weight: 500;
}

.news-detail__tag {
    font-size: var(--font-size-small);
    color: var(--color-primary);
    background: rgba(37, 99, 235, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: all 0.3s ease;
}

.news-detail__tag:hover {
    background: var(--color-primary);
    color: var(--color-text-white);
}

.news-detail__actions {
    display: flex;
    gap: var(--spacing-sm);
}

.news-detail__action-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-small);
    color: var(--color-text);
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
}

.news-detail__action-btn:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: rgba(37, 99, 235, 0.05);
}

.news-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.news-navigation__link {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    background: var(--color-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    text-decoration: none;
    transition: all 0.3s ease;
}

.news-navigation__link:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.news-navigation__link--prev {
    text-align: left;
}

.news-navigation__link--next {
    text-align: right;
}

.news-navigation__label {
    font-size: var(--font-size-small);
    color: var(--color-text-lighter);
    margin-bottom: var(--spacing-xs);
}

.news-navigation__title {
    font-size: var(--font-size-base);
    color: var(--color-text);
    font-weight: 500;
    line-height: 1.5;
}

.news-related {
    background: var(--color-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-xl);
}

.news-related__title {
    font-size: var(--font-size-large);
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 var(--spacing-lg) 0;
    font-family: var(--font-family-heading);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.news-related__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.news-related__item {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.news-related__item:last-child {
    border-bottom: none;
}

.news-related__link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    text-decoration: none;
    transition: color 0.3s ease;
}

.news-related__link:hover .news-related__title {
    color: var(--color-primary);
}

.news-related__date {
    font-size: var(--font-size-small);
    color: var(--color-text-lighter);
    white-space: nowrap;
    flex-shrink: 0;
    min-width: 90px;
}

.news-related__title {
    font-size: var(--font-size-base);
    color: var(--color-text);
    flex: 1;
    transition: color 0.3s ease;
}

.news-back {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.news-back__link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    color: var(--color-primary);
    background: var(--color-bg);
    border: 1px solid var(--color-primary);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.news-back__link:hover {
    color: var(--color-text-white);
    background: var(--color-primary-gradient);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-primary);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .news-detail {
        padding: var(--spacing-lg);
    }

    .news-detail__title {
        font-size: 24px;
    }

    .news-detail__meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .news-detail__footer {
        flex-direction: column;
        align-items: flex-start;
    }

    .news-navigation {
        grid-template-columns: 1fr;
    }

    .news-navigation__link--next {
        text-align: left;
    }

    .news-related__link {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }

    .news-related__date {
        min-width: auto;
    }
}