/* =====================================================
   盐城工学院2026级新生服务大厅 · 全局设计系统
   模块化 CSS · 支持暗色模式 · 响应式优先
   ===================================================== */

/* ---------- 0. Reset & Base ---------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* 色板：深绿主色 + 活力辅色 */
    --color-primary: #0f5e3a;
    --color-primary-light: #2d9f66;
    --color-primary-lighter: #e8faf1;
    --color-accent: #f59e0b;
    --color-accent-red: #ef4444;
    --color-accent-blue: #2563eb;
    --color-accent-purple: #8b5cf6;

    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-text-lighter: #9ca3af;
    --color-bg: #f7fafc;
    --color-card: #ffffff;
    --color-border: #e5e7eb;

    /* 渐变：Banner 用（增强版） */
    --gradient-banner: linear-gradient(135deg,
        #0a2e1a 0%,
        #0d3a24 15%,
        #13482a 30%,
        #1b6b3e 50%,
        #2d9f66 72%,
        #3fa970 88%,
        #8bfaa7 100%);
    --gradient-banner-radial: radial-gradient(ellipse at top,
        rgba(139, 250, 167, 0.35) 0%,
        rgba(63, 169, 112, 0.2) 30%,
        transparent 70%);
    --gradient-card: linear-gradient(145deg, #ffffff 0%, #f9fafb 100%);
    --gradient-card-featured: linear-gradient(145deg, #ffffff 0%, #f0fdf4 100%);

    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 4px 10px -4px rgba(0, 0, 0, 0.05);
    --shadow-glow-green: 0 4px 20px rgba(45, 159, 102, 0.25);

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;

    /* 字号 */
    --text-xs: 11px;
    --text-sm: 13px;
    --text-base: 15px;
    --text-lg: 18px;
    --text-xl: 22px;
    --text-2xl: 28px;
    --text-3xl: 36px;
    --text-hero: 56px;

    /* 间距 */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;

    /* 动画时长 */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

    /* 容器最大宽度（移动端友好） */
    --container-max: 760px;

    /* 安全区域 */
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
        sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    font-size: var(--text-base);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    position: relative;
    background-color: #f7fafc;
}

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

a {
    color: inherit;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
}

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

/* ---------- 1. 顶部导航栏 ---------- */
.nav-bar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.96);
    padding: calc(var(--space-3) + var(--safe-top)) var(--space-4) var(--space-3);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
}

.nav-bar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-bar .title-group {
    text-align: center;
    flex: 1;
}

.nav-bar .title-group .main-title {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: 0.5px;
}

.nav-bar .title-group .sub-title {
    font-size: var(--text-xs);
    color: var(--color-text-light);
    margin-top: 2px;
    letter-spacing: 1px;
}

.nav-bar .icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.nav-bar .icon-btn:active {
    background: var(--color-primary-lighter);
    transform: scale(0.92);
}

.nav-bar .icon-btn svg {
    width: 22px;
    height: 22px;
}

/* ---------- 2. Banner 英雄区 ---------- */
.banner {
    position: relative;
    padding: 60px 20px 80px;
    background: var(--gradient-banner);
    overflow: hidden;
    text-align: center;
}

/* Banner 简化背景装饰：只保留一层径向渐变，避免持续动画 */
.banner-bg-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    background:
        radial-gradient(ellipse 400px 300px at 20% 20%, rgba(255, 255, 255, 0.12), transparent 70%),
        radial-gradient(ellipse 500px 350px at 80% 30%, rgba(139, 250, 167, 0.15), transparent 70%);
}

/* Banner 装饰性圆圈 - 静态，不使用持续动画 */
.float-deco {
    position: absolute;
    pointer-events: none;
    z-index: 1;
    opacity: 0.35;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.15);
}

.banner-content {
    position: relative;
    z-index: 2;
    color: #fff;
}

.banner .tag {
    display: inline-block;
    padding: 6px 18px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 999px;
    font-size: var(--text-sm);
    color: #e8faf1;
    letter-spacing: 2px;
    margin-bottom: 20px;
    background: rgba(0, 0, 0, 0.2);
}

.banner .main-heading {
    font-size: clamp(38px, 10vw, var(--text-hero));
    font-weight: 800;
    color: #fff;
    letter-spacing: 2px;
    line-height: 1.15;
    margin-bottom: 16px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
    background: linear-gradient(180deg, #fff 0%, #c8f3d7 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.banner .sub-heading {
    font-size: var(--text-base);
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 2px;
    margin-bottom: 20px;
    line-height: 1.8;
}

.banner .sub-heading span {
    color: #fde68a;
    font-weight: 600;
}

.banner .divider-line {
    width: 64px;
    height: 3px;
    background: linear-gradient(90deg, transparent, #fff, transparent);
    margin: 0 auto;
    border-radius: 2px;
    opacity: 0.6;
}

/* Banner 波浪底部过渡 */
.banner-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    line-height: 0;
    pointer-events: none;
    z-index: 3;
}

.banner-wave svg {
    width: 100%;
    height: 40px;
    display: block;
}

/* ---------- 3. 通用容器 ---------- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.main-content {
    position: relative;
    margin-top: -40px;
    padding-bottom: 40px;
    z-index: 5;
}

/* 内容区背景装饰：简化，移除模糊和动画（移动端性能） */
.content-deco {
    display: none;
}

/* ---------- 4. 倒计时卡片 ---------- */
.countdown-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: var(--space-6) var(--space-5);
    margin-bottom: var(--space-4);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #ffffff 0%, #f0fdf4 100%);
    border: 1px solid rgba(45, 159, 102, 0.15);
    /* 入场动画：稍微放大 + 向上滑入 */
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.countdown-card:hover {
    box-shadow: 0 20px 50px -10px rgba(45, 159, 102, 0.2);
}

/* 倒计时卡片角落装饰：彩色渐变小方块（优先级高于通用卡片） */
.countdown-card::before {
    content: "" !important;
    position: absolute;
    top: 0;
    right: 0;
    width: 180px;
    height: 180px;
    background: radial-gradient(circle at top right,
        rgba(139, 250, 167, 0.35) 0%,
        rgba(45, 159, 102, 0.15) 40%,
        transparent 70%);
    pointer-events: none;
    border-bottom-left-radius: 100%;
    height: 160px;
    opacity: 1;
}

.countdown-card::after {
    content: "" !important;
    position: absolute;
    bottom: 0;
    left: 0;
    width: 120px;
    height: 120px;
    background: radial-gradient(circle at bottom left,
        rgba(253, 230, 138, 0.25) 0%,
        rgba(245, 158, 11, 0.1) 40%,
        transparent 70%);
    pointer-events: none;
    border-top-right-radius: 100%;
    opacity: 1;
}

/* 倒计时卡片禁用通用卡片的 ::before 顶部彩条 */
.countdown-card::before {
    height: 180px !important;
}

.countdown-header {
    text-align: center;
    margin-bottom: var(--space-5);
    position: relative;
}

.countdown-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #2d9f66, #3fa970);
    border-radius: 50%;
    margin-bottom: var(--space-3);
    box-shadow: var(--shadow-glow-green);
}

.countdown-icon svg {
    width: 22px;
    height: 22px;
    fill: #fff;
}

.countdown-date {
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: 2px;
    margin-bottom: 4px;
}

.countdown-title {
    font-size: var(--text-sm);
    color: var(--color-text-light);
    font-weight: 500;
    letter-spacing: 1px;
}

.countdown-timer {
    display: flex;
    justify-content: center;
    align-items: stretch;
    gap: 8px;
    flex-wrap: nowrap;
    position: relative;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 58px;
    background: #fff;
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-2);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: transform var(--transition-base);
}

.countdown-item:hover {
    transform: translateY(-2px);
}

.countdown-number {
    font-size: var(--text-xl);
    font-weight: 800;
    color: var(--color-primary);
    font-variant-numeric: tabular-nums;
    line-height: 1;
    background: linear-gradient(135deg, #0f5e3a, #2d9f66);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.countdown-label {
    font-size: var(--text-xs);
    color: var(--color-text-light);
    margin-top: 6px;
    letter-spacing: 1px;
}

.countdown-separator {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary-light);
    font-weight: 700;
    font-size: var(--text-lg);
    min-width: 8px;
}

/* ---------- 5. 公告条 ---------- */
.notice-bar {
    background: #fff;
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-primary-light);
}

.notice-bar .speaker-icon {
    flex-shrink: 0;
    color: var(--color-primary);
    background: var(--color-primary-lighter);
    padding: 8px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.notice-bar .speaker-icon svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.notice-bar .notice-text {
    font-size: var(--text-sm);
    color: var(--color-text);
    line-height: 1.6;
    flex: 1;
}

.notice-bar .notice-text strong {
    color: var(--color-primary);
    font-weight: 600;
}

/* ---------- 6. 通用卡片 ---------- */
.card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: var(--space-6) var(--space-5);
    margin-bottom: var(--space-4);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base),
        border-color var(--transition-base);
    border: 1px solid rgba(0, 0, 0, 0.03);
    position: relative;
    overflow: hidden;
}

/* 卡片顶部装饰彩条 */
.card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg,
        transparent 0%,
        var(--color-primary-light) 30%,
        var(--color-accent) 70%,
        transparent 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
    transform-origin: center;
}

.card:hover {
    box-shadow: 0 15px 40px -10px rgba(0, 0, 0, 0.12);
    transform: translateY(-1px);
}

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

/* 卡片内部轻微的网格纹理背景 */
.card::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 90% 10%, rgba(45, 159, 102, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 10% 90%, rgba(245, 158, 11, 0.04) 0%, transparent 40%);
    pointer-events: none;
    opacity: 1;
    border-radius: inherit;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-5);
    gap: var(--space-3);
}

.card-header .card-title-group {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.card-header .card-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-lighter);
    color: var(--color-primary);
    flex-shrink: 0;
}

.card-header .card-icon svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.card-header .text-group {
    display: flex;
    flex-direction: column;
}

.card-header .card-title {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.3;
}

.card-header .card-subtitle {
    font-size: var(--text-xs);
    color: var(--color-text-light);
    margin-top: 2px;
    letter-spacing: 0.5px;
}

.card-header .card-status {
    font-size: var(--text-xs);
    color: var(--color-text-lighter);
    padding: 4px 10px;
    background: #f3f4f6;
    border-radius: 999px;
    white-space: nowrap;
    flex-shrink: 0;
    align-self: center;
}

.card-header .card-status.hot {
    background: #fef2f2;
    color: var(--color-accent-red);
}

.card-header .card-status.new {
    background: #ecfdf5;
    color: var(--color-primary);
}

/* ---------- 7. 宫格导航 ---------- */
.grid-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.grid-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 14px 6px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: transform var(--transition-base), background var(--transition-base),
        box-shadow var(--transition-base);
    position: relative;
    text-decoration: none;
    border: 1px solid transparent;
    overflow: hidden;
}

.grid-item:hover {
    background: linear-gradient(135deg, #ffffff, #f0fdf4);
    box-shadow: 0 8px 20px -8px rgba(45, 159, 102, 0.25);
    transform: translateY(-2px);
}

.grid-item:active {
    transform: scale(0.94);
}

/* 宫格图标浮动：持续小幅度呼吸动画 */
.grid-item .icon-wrapper {
    width: 54px;
    height: 54px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
    position: relative;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    background: linear-gradient(135deg, #f0fdf4, #ecfdf5);
    border: 1px solid rgba(45, 159, 102, 0.12);
}

.grid-item:hover .icon-wrapper {
    transform: scale(1.1) rotate(-3deg);
    box-shadow: 0 8px 16px -4px rgba(45, 159, 102, 0.3);
}

.grid-item:active .icon-wrapper {
    transform: scale(0.9);
}

.grid-item .icon-wrapper svg,
.grid-item .icon-wrapper img {
    width: 28px;
    height: 28px;
    object-fit: cover;
}

/* 不同颜色系的图标底 */
.grid-item .icon-wrapper.color-blue {
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    border-color: rgba(37, 99, 235, 0.15);
}
.grid-item .icon-wrapper.color-orange {
    background: linear-gradient(135deg, #fffbeb, #fef3c7);
    border-color: rgba(245, 158, 11, 0.18);
}
.grid-item .icon-wrapper.color-red {
    background: linear-gradient(135deg, #fef2f2, #fee2e2);
    border-color: rgba(239, 68, 68, 0.15);
}
.grid-item .icon-wrapper.color-purple {
    background: linear-gradient(135deg, #f5f3ff, #ede9fe);
    border-color: rgba(139, 92, 246, 0.18);
}
.grid-item .icon-wrapper.color-teal {
    background: linear-gradient(135deg, #f0fdfa, #ccfbf1);
    border-color: rgba(20, 184, 166, 0.15);
}

.grid-item .item-label {
    font-size: var(--text-sm);
    color: var(--color-text);
    text-align: center;
    line-height: 1.3;
    font-weight: 500;
}

.grid-item .item-desc {
    font-size: 10px;
    color: var(--color-text-lighter);
    margin-top: 2px;
    text-align: center;
    max-width: 80px;
    line-height: 1.3;
}

/* 角标（增强动画） */
.badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--color-accent-red);
    color: #fff;
    font-size: 10px;
    padding: 3px 8px;
    border-radius: 999px;
    white-space: nowrap;
    font-weight: 700;
    box-shadow: 0 2px 6px rgba(239, 68, 68, 0.35);
    z-index: 2;
    letter-spacing: 0.5px;
}

.badge.blue {
    background: var(--color-accent-blue);
    box-shadow: 0 2px 6px rgba(37, 99, 235, 0.35);
}

.badge.orange {
    background: var(--color-accent);
    box-shadow: 0 2px 6px rgba(245, 158, 11, 0.35);
}

.badge.green {
    background: var(--color-primary);
    box-shadow: 0 2px 6px rgba(15, 94, 58, 0.35);
}

.badge.purple {
    background: var(--color-accent-purple);
    box-shadow: 0 2px 6px rgba(139, 92, 246, 0.35);
}

/* ---------- 8. 快速入口导航（新增） ---------- */
.quick-nav {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
    background: #fff;
    border-radius: var(--radius-lg);
    padding: var(--space-4) var(--space-3);
    margin-bottom: var(--space-4);
    box-shadow: var(--shadow-md);
}

.quick-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 8px 4px;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), transform var(--transition-fast);
    cursor: pointer;
}

.quick-nav-item:active {
    background: #f9fafb;
    transform: scale(0.94);
}

.quick-nav-item .icon {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.quick-nav-item .icon svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.quick-nav-item .icon.c1 { background: linear-gradient(135deg, #3fa970, #0f5e3a); }
.quick-nav-item .icon.c2 { background: linear-gradient(135deg, #3b82f6, #1d4ed8); }
.quick-nav-item .icon.c3 { background: linear-gradient(135deg, #f59e0b, #d97706); }
.quick-nav-item .icon.c4 { background: linear-gradient(135deg, #8b5cf6, #6d28d9); }
.quick-nav-item .icon.c5 { background: linear-gradient(135deg, #ef4444, #b91c1c); }

.quick-nav-item .label {
    font-size: 11px;
    color: var(--color-text);
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* ---------- 9. 新闻/公告列表（新增） ---------- */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.news-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-2);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
    cursor: pointer;
    border-bottom: 1px dashed var(--color-border);
}

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

.news-item:active {
    background: #f9fafb;
}

.news-item .tag-news {
    flex-shrink: 0;
    font-size: 10px;
    padding: 3px 8px;
    border-radius: 4px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.news-item .tag-news.hot {
    background: #fef2f2;
    color: var(--color-accent-red);
}

.news-item .tag-news.new {
    background: #ecfdf5;
    color: var(--color-primary);
}

.news-item .tag-news.notice {
    background: #eff6ff;
    color: var(--color-accent-blue);
}

.news-item .news-title {
    flex: 1;
    font-size: var(--text-sm);
    color: var(--color-text);
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.news-item .news-date {
    flex-shrink: 0;
    font-size: 11px;
    color: var(--color-text-lighter);
    font-variant-numeric: tabular-nums;
}

.news-item .news-arrow {
    flex-shrink: 0;
    color: var(--color-text-lighter);
    font-size: 14px;
}

/* ---------- 10. FAQ 常见问题（新增） ---------- */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.faq-item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-item.open {
    border-color: var(--color-primary-light);
    box-shadow: 0 2px 12px rgba(45, 159, 102, 0.1);
}

.faq-question {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
    cursor: pointer;
    user-select: none;
    transition: background var(--transition-fast);
}

.faq-question:hover {
    background: #f9fafb;
}

.faq-q-label {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    background: var(--color-primary);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.faq-q-text {
    flex: 1;
    font-size: var(--text-sm);
    color: var(--color-text);
    font-weight: 600;
    line-height: 1.5;
}

.faq-toggle {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    color: var(--color-text-light);
    transition: transform var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.faq-item.open .faq-toggle {
    transform: rotate(180deg);
    color: var(--color-primary);
}

.faq-toggle svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition-base);
    padding: 0 var(--space-4);
}

.faq-item.open .faq-answer {
    max-height: 300px;
    padding: 0 var(--space-4) var(--space-4) calc(24px + var(--space-3) + var(--space-4));
}

.faq-answer p {
    font-size: var(--text-sm);
    color: var(--color-text-light);
    line-height: 1.7;
    padding: var(--space-2) var(--space-3);
    background: #f9fafb;
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--color-primary-light);
}

/* ---------- 11. Footer 底部 ---------- */
.footer {
    background: #fff;
    padding: var(--space-6) var(--space-4);
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-4);
    text-align: center;
}

.footer-stats {
    display: flex;
    justify-content: space-around;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
    flex-wrap: wrap;
}

.footer-stats .stat {
    text-align: center;
}

.footer-stats .stat .label {
    font-size: var(--text-xs);
    color: var(--color-text-light);
    margin-bottom: 4px;
    letter-spacing: 0.5px;
}

.footer-stats .stat .value {
    font-size: var(--text-xl);
    font-weight: 800;
    color: var(--color-primary);
    font-variant-numeric: tabular-nums;
}

.footer-stats .stat .value .unit {
    font-size: var(--text-sm);
    font-weight: 600;
    margin-left: 2px;
}

.footer-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-6);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.footer-logo .logo-box {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, #f0fdf4, #ecfdf5);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    border: 1px solid rgba(45, 159, 102, 0.15);
}

.footer-logo.blue .logo-box {
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    color: var(--color-accent-blue);
    border-color: rgba(37, 99, 235, 0.15);
}

.footer-logo .logo-box svg {
    width: 32px;
    height: 32px;
    fill: currentColor;
}

.footer-logo-single .logo-box {
    width: 90px;
    height: 90px;
}

.footer-logo .logo-name {
    font-size: 11px;
    color: var(--color-text-light);
    letter-spacing: 0.5px;
}

.footer-text {
    font-size: 11px;
    color: var(--color-text-lighter);
    letter-spacing: 0.5px;
    line-height: 1.8;
}

.footer-text strong {
    color: var(--color-primary);
    font-weight: 600;
}

.safe-bottom {
    height: var(--safe-bottom);
}

/* ---------- 12. 返回顶部按钮 ---------- */
.back-to-top {
    position: fixed;
    right: 20px;
    bottom: calc(30px + var(--safe-bottom));
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: linear-gradient(135deg, #2d9f66, #0f5e3a);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity var(--transition-base), transform var(--transition-base),
        visibility var(--transition-base);
    z-index: 50;
    border: none;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:active {
    transform: translateY(0) scale(0.92);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* ---------- 13. Toast 提示 ---------- */
.toast {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: rgba(17, 24, 39, 0.95);
    color: #fff;
    padding: 12px 20px;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), transform var(--transition-base),
        visibility var(--transition-base);
    z-index: 200;
    max-width: 80%;
    text-align: center;
    pointer-events: none;
    box-shadow: var(--shadow-lg);
}

.toast.visible {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

/* ---------- 14. 滚动入场动画 ---------- */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* 错峰延迟 */
.reveal.delay-1 { transition-delay: 0.1s; }
.reveal.delay-2 { transition-delay: 0.2s; }
.reveal.delay-3 { transition-delay: 0.3s; }
.reveal.delay-4 { transition-delay: 0.4s; }

/* ---------- 15. 滚动条美化 ---------- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-thumb {
    background: rgba(15, 94, 58, 0.2);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(15, 94, 58, 0.4);
}

/* ---------- 16. 响应式：平板及以下 ---------- */
@media (max-width: 768px) {
    .banner {
        padding: 40px 16px 60px;
    }

    .banner .tag {
        font-size: var(--text-sm);
        letter-spacing: 2px;
        padding: 6px 14px;
    }

    .banner .main-heading {
        font-size: clamp(36px, 9vw, 48px);
        letter-spacing: 2px;
    }

    .banner .sub-heading {
        font-size: var(--text-sm);
    }

    .countdown-card {
        padding: var(--space-5) var(--space-4);
    }

    .countdown-timer {
        gap: 6px;
    }

    .countdown-item {
        min-width: 50px;
        padding: var(--space-3) 6px;
    }

    .countdown-number {
        font-size: var(--text-lg);
    }

    .card {
        padding: var(--space-5) var(--space-4);
    }

    .grid-container {
        grid-template-columns: repeat(4, 1fr);
        gap: 8px;
    }

    .grid-item {
        padding: 12px 4px;
    }

    .grid-item .icon-wrapper {
        width: 48px;
        height: 48px;
    }

    .grid-item .item-label {
        font-size: 12px;
    }

    .grid-item .item-desc {
        display: none;
    }

    .quick-nav {
        grid-template-columns: repeat(5, 1fr);
    }

    .card-header .card-title {
        font-size: var(--text-base);
    }

    .news-item .news-title {
        font-size: 13px;
    }
}

/* ---------- 17. 响应式：小屏手机 ---------- */
@media (max-width: 480px) {
    .banner {
        padding: 32px 12px 52px;
    }

    .banner .tag {
        font-size: 12px;
        padding: 5px 12px;
    }

    .banner .main-heading {
        font-size: clamp(28px, 8vw, 36px);
    }

    .banner .sub-heading {
        font-size: 12px;
        letter-spacing: 1.5px;
    }

    .countdown-timer {
        gap: 4px;
    }

    .countdown-item {
        min-width: 44px;
        padding: var(--space-2) 4px;
    }

    .countdown-number {
        font-size: var(--text-base);
    }

    .countdown-label {
        font-size: 10px;
    }

    .countdown-separator {
        font-size: var(--text-sm);
        min-width: 4px;
    }

    .grid-container {
        gap: 4px;
    }

    .grid-item {
        padding: 10px 2px;
    }

    .grid-item .icon-wrapper {
        width: 44px;
        height: 44px;
        margin-bottom: 8px;
    }

    .grid-item .icon-wrapper svg,
    .grid-item .icon-wrapper img {
        width: 24px;
        height: 24px;
    }

    .grid-item .item-label {
        font-size: 11px;
    }

    .quick-nav {
        grid-template-columns: repeat(5, 1fr);
        gap: 4px;
        padding: var(--space-3) var(--space-2);
    }

    .quick-nav-item .icon {
        width: 38px;
        height: 38px;
    }

    .quick-nav-item .icon svg {
        width: 18px;
        height: 18px;
    }

    .quick-nav-item .label {
        font-size: 10px;
    }

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

    .notice-bar {
        padding: var(--space-3);
        gap: var(--space-2);
    }

    .card-header .card-icon {
        width: 32px;
        height: 32px;
    }

    .card-header .card-icon svg {
        width: 18px;
        height: 18px;
    }

    .footer-stats {
        gap: var(--space-3);
    }

    .footer-stats .stat .value {
        font-size: var(--text-lg);
    }
}

/* ---------- 18. 超小屏适配 ---------- */
@media (max-width: 320px) {
    .grid-container {
        grid-template-columns: repeat(3, 1fr);
    }

    .banner .tag {
        font-size: 11px;
    }

    .banner .main-heading {
        font-size: 24px;
    }
}

/* ---------- 19. 大屏（桌面）优化 ---------- */
@media (min-width: 900px) {
    body {
        background: linear-gradient(180deg, #f7fafc 0%, #e9f5ee 100%);
    }

    .grid-container {
        grid-template-columns: repeat(4, 1fr);
    }

    .grid-item:hover {
        background: #f9fafb;
        transform: translateY(-2px);
    }
}

/* ---------- 20. 尊重用户"减少动画"偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* ---------- 21. 打印样式 ---------- */
@media print {
    .nav-bar,
    .back-to-top,
    .toast,
    .footer-logos {
        display: none;
    }

    body {
        background: #fff;
        color: #000;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ccc;
        break-inside: avoid;
    }
}