/* ==========================================================
   百变空间 官网样式
   主色 #1E54FF | 辅色 #0039B3 | 强调色 #4A7BFF | 背景 #F5F7FB
   电光蓝主题：高饱和度品牌蓝 + 鎏金点缀 + 高级质感
   ========================================================== */

:root {
    --c-primary: #1E54FF;
    /* 电光蓝 - 主色 */
    --c-secondary: #0039B3;
    /* 深蓝 - 辅色 */
    --c-accent: #4A7BFF;
    /* 亮蓝 - 强调 */
    --c-accent-dark: #0039B3;
    --c-accent-light: #E6EEFF;
    /* 淡蓝 - 背景/标签 */
    --c-gold: #D4AF6A;
    /* 鎏金 - 高端点缀 */
    --c-bg: #F5F7FB;
    /* 冷雾蓝 - 主背景 */
    --c-bg-card: #ffffff;
    --c-bg-dark: #001A66;
    /* 深海军 - 暗背景 */
    --c-text: #0A1A3D;
    --c-text-mute: #5B6A8C;
    --c-text-light: #8FA3B8;
    --c-border: #DDE4F0;
    --c-border-dark: #B8C5DD;
    --c-success: #27ae60;
    --c-error: #e74c3c;
    --c-warning: #f0ad4e;

    /* 阴影使用电光蓝调,营造高级质感 */
    --shadow-sm: 0 2px 6px rgba(30, 84, 255, .08);
    --shadow-md: 0 6px 20px rgba(30, 84, 255, .12);
    --shadow-lg: 0 18px 40px rgba(30, 84, 255, .18);
    --shadow-xl: 0 24px 60px rgba(0, 57, 179, .25);
    --shadow-gold: 0 4px 12px rgba(212, 175, 106, .30);

    /* 渐变 - 高饱和度电光蓝三段式 */
    --grad-primary: linear-gradient(135deg, #0039B3 0%, #1E54FF 50%, #4A7BFF 100%);
    --grad-gold: linear-gradient(135deg, #D4AF6A 0%, #E8C989 50%, #D4AF6A 100%);
    --grad-hero: linear-gradient(135deg, #0039B3 0%, #1E54FF 60%, #4A7BFF 100%);
    --grad-card: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(30, 84, 255, .04) 100%);

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-pill: 999px;

    --container-w: 1200px;
    --header-h: 72px;

    --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html,
body {
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, "Source Han Sans CN", sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: var(--c-text);
    background: var(--c-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: var(--c-secondary);
    text-decoration: none;
    transition: color .25s var(--ease);
}

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

button {
    font-family: inherit;
    cursor: pointer;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    color: var(--c-secondary);
    margin: 0;
    line-height: 1.3;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: 15px;
    color: var(--c-text);
}

/* ============== 容器 ============== */
.container {
    max-width: var(--container-w);
    margin: 0 auto;
    padding: 0 24px;
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
}

/* ============== 顶部导航 ============== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-h);
    z-index: 100;
    background: rgba(240, 244, 248, 0);
    transition: background .3s var(--ease), box-shadow .3s var(--ease), backdrop-filter .3s var(--ease);
}

.site-header.scrolled {
    background: rgba(240, 244, 248, .92);
    backdrop-filter: saturate(180%) blur(10px);
    -webkit-backdrop-filter: saturate(180%) blur(10px);
    box-shadow: 0 2px 12px rgba(15, 42, 68, .08);
    border-bottom: 1px solid rgba(214, 224, 234, .6);
}

.nav-inner {
    max-width: var(--container-w);
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--c-secondary);
}

.nav-logo .logo-img {
    height: 50px;
    width: auto;
    max-width: 200px;
    display: block;
    border-radius: 6px;
    object-fit: cover;
}

.nav-logo .logo-mark {
    width: 36px;
    height: 36px;
    background: var(--grad-primary);
    color: #fff;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    box-shadow: var(--shadow-sm);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
    margin: 0 auto;
}

.nav-menu a {
    color: var(--c-secondary);
    font-size: 15px;
    font-weight: 500;
    position: relative;
    padding: 6px 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px;
    background: var(--c-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .25s var(--ease);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    transform: scaleX(1);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--c-accent);
}

.nav-phone {
    margin-left: 0;
}

.nav-cta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: 20px;
}

.nav-cta .btn-text,
.nav-phone {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.nav-phone {
    margin-left: auto;
}

.nav-toggle {
    display: none;
    background: none;
    border: 0;
    width: 40px;
    height: 40px;
    color: var(--c-secondary);
}

.nav-toggle svg {
    width: 24px;
    height: 24px;
}

@media (max-width: 1024px) {
    .nav-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .nav-menu {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        gap: 0;
        margin: 0;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height .3s var(--ease), padding .3s var(--ease);
    }

    .nav-menu.open {
        max-height: 480px;
        padding: 12px 0;
        box-shadow: var(--shadow-md);
    }

    .nav-menu a {
        padding: 14px 24px;
        width: 100%;
    }

    .nav-phone {
        margin-left: 0;
    }

    .nav-inner {
        padding: 0 20px;
    }

    .nav-cta {
        gap: 14px;
        margin-left: 0;
    }

    .nav-toggle {
        margin-right: 8px;
    }

    .nav-cta .btn-sm {
        padding: 8px 14px;
        font-size: 13px;
    }
}

/* ============== 按钮 ============== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 12px 28px;
    border: 0;
    border-radius: var(--radius-pill);
    font-size: 15px;
    font-weight: 600;
    background: #fff;
    color: var(--c-secondary);
    cursor: pointer;
    transition: all .25s var(--ease);
    text-decoration: none;
    white-space: nowrap;
}

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

.btn-primary {
    background: var(--grad-primary);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, .15);
    box-shadow: 0 4px 12px rgba(30, 77, 123, .25), inset 0 1px 0 rgba(255, 255, 255, .2);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 40%, rgba(255, 255, 255, .15) 50%, transparent 60%);
    transform: translateX(-100%);
    transition: transform .6s;
}

.btn-primary:hover::before {
    transform: translateX(100%);
}

.btn-primary:hover {
    background: var(--c-accent-dark);
    color: #fff;
    box-shadow: 0 6px 18px rgba(30, 77, 123, .35), inset 0 1px 0 rgba(255, 255, 255, .25);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, .8);
}

.btn-outline:hover {
    background: #fff;
    color: var(--c-secondary);
}

.btn-ghost {
    background: transparent;
    color: var(--c-secondary);
}

.btn-ghost:hover {
    background: var(--c-border);
}

.btn-sm {
    padding: 8px 18px;
    font-size: 14px;
}

.btn-lg {
    padding: 16px 40px;
    font-size: 16px;
}

.btn-block {
    width: 100%;
}

/* CTA 区双按钮组：桌面端横排，移动端竖排等宽 */
.cta-actions {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

@media (max-width: 640px) {
    .cta-actions {
        flex-direction: column;
        gap: 14px;
        max-width: 340px;
        margin: 0 auto;
    }

    .cta-actions .btn {
        width: 100%;
        margin: 0;
    }
}

/* ============== 通用区域 ============== */
section {
    padding: 80px 0;
}

@media (max-width: 768px) {
    section {
        padding: 56px 0;
    }
}

.section-title {
    text-align: center;
    margin-bottom: 48px;
}

.section-title .eyebrow {
    display: inline-block;
    color: var(--c-primary);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 4px;
    margin-bottom: 12px;
    text-transform: uppercase;
    position: relative;
    padding: 0 24px;
}

.section-title .eyebrow::before,
.section-title .eyebrow::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 16px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--c-gold), transparent);
}

.section-title .eyebrow::before {
    left: 0;
}

.section-title .eyebrow::after {
    right: 0;
}

.section-title h2 {
    font-size: 36px;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--c-secondary) 0%, var(--c-primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-title p {
    color: var(--c-text-mute);
    font-size: 16px;
    max-width: 680px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .section-title h2 {
        font-size: 28px;
    }

    .section-title {
        margin-bottom: 36px;
    }
}

/* ============== Hero ============== */
.hero {
    position: relative;
    width: 100%;
    aspect-ratio: 2.4 / 1;
    max-height: 800px;
    overflow: hidden;
    color: #fff;
    background-color: #1a1a1a;
}

.hero-slides {
    position: absolute;
    inset: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1.2s var(--ease);
}

.hero-slide.active {
    opacity: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    max-width: 760px;
    padding-top: var(--header-h);
}

.hero h1 {
    color: #fff;
    font-size: clamp(26px, 6vw, 64px);
    line-height: 1.15;
    margin: 0 0 clamp(10px, 2vw, 20px);
    text-shadow: 0 2px 16px rgba(0, 0, 0, .55), 0 1px 3px rgba(0, 0, 0, .4);
}

.hero .sub {
    font-size: clamp(13px, 1.9vw, 20px);
    line-height: 1.7;
    color: rgba(255, 255, 255, .95);
    margin-bottom: clamp(14px, 2.8vw, 36px);
    text-shadow: 0 1px 10px rgba(0, 0, 0, .55), 0 1px 3px rgba(0, 0, 0, .4);
}

.hero .cta-row {
    display: flex;
    gap: clamp(10px, 1.5vw, 16px);
    flex-wrap: wrap;
}

/* 按钮随视口宽度弹性缩放，任何宽度下都保持在图上 */
.hero .cta-row .btn-lg {
    padding: clamp(10px, 1.5vw, 16px) clamp(16px, 3.5vw, 40px);
    font-size: clamp(13px, 1.4vw, 16px);
    white-space: nowrap;
}

.hero-indicators {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 32px;
    z-index: 3;
    display: flex;
    gap: 10px;
    justify-content: center;
}

.hero-indicators .dot {
    width: 36px;
    height: 4px;
    background: rgba(255, 255, 255, .4);
    border: 0;
    border-radius: 2px;
    cursor: pointer;
    transition: background .3s var(--ease);
}

.hero-indicators .dot.active {
    background: var(--c-accent);
}

/* ============== Hero 左右箭头 ============== */
.hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: 0;
    background: transparent;
    color: #fff;
    font-size: 36px;
    line-height: 1;
    font-weight: 300;
    cursor: pointer;
    text-shadow: 0 1px 8px rgba(0, 0, 0, .45);
    transition: background .25s var(--ease), transform .25s var(--ease), color .25s var(--ease);
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
}

.hero-arrow:hover {
    background: rgba(255, 255, 255, .12);
    transform: translateY(-50%) scale(1.08);
}

.hero-prev {
    left: 24px;
}

.hero-next {
    right: 24px;
}

@media (max-width: 768px) {
    .hero-arrow {
        width: 40px;
        height: 40px;
        font-size: 26px;
    }

    .hero-prev {
        left: 10px;
    }

    .hero-next {
        right: 10px;
    }
}

@media (max-width: 1024px) {

    /* 平板及以下：2.4:1 高度不足以容纳标题+按钮，改为内容自适应 */
    .hero {
        aspect-ratio: auto;
    }

    .hero-content {
        padding-top: calc(var(--header-h) + 16px);
        padding-bottom: 48px;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: clamp(24px, 5.2vw, 44px);
        line-height: 1.12;
    }

    .hero .sub {
        line-height: 1.5;
    }
}

@media (max-width: 560px) {

    .hero-indicators {
        bottom: 14px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 24px;
    }

    .hero .sub {
        font-size: 12px;
        margin-bottom: 12px;
    }

    .hero .cta-row .btn-lg {
        padding: 9px 14px;
        font-size: 12px;
    }

    .hero .cta-row {
        gap: 8px;
    }
}

/* ============== 信任背书 ============== */
.trust {
    background: #fff;
    padding: 60px 0;
}

.trust-card {
    background: #fff;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    padding: 56px 48px;
    overflow: hidden;
}

.trust-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    margin-bottom: 48px;
}

@media (max-width: 768px) {
    .trust-card {
        padding: 32px 20px;
    }

    .trust-intro {
        grid-template-columns: 1fr;
        gap: 24px;
        margin-bottom: 32px;
    }
}

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

.stat-item {
    text-align: center;
    padding: 20px;
}

.stat-num {
    font-size: 48px;
    font-weight: 800;
    color: var(--c-accent);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    color: var(--c-text-mute);
    font-size: 15px;
}

.trust-projects {
    text-align: center;
    color: var(--c-text-mute);
    font-size: 14px;
    margin-bottom: 32px;
}

.trust-logos {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 24px;
    justify-content: center;
    align-items: center;
}

.brand-chip {
    height: 56px;
    padding: 0 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    color: var(--c-primary);
    font-weight: 600;
    transition: all .25s var(--ease);
}

.brand-chip:hover {
    border-color: var(--c-accent);
    color: var(--c-accent);
    transform: translateY(-2px);
}

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

    .stat-num {
        font-size: 40px;
    }
}

/* ============== 价值点卡片 ============== */
.values {
    background: var(--c-bg);
}

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

.value-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    box-shadow: var(--shadow-sm);
    transition: all .3s var(--ease);
    border: 1px solid var(--c-border);
    position: relative;
    overflow: hidden;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--grad-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .4s var(--ease);
}

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

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

.value-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--c-accent-light), #D6E4F2);
    color: var(--c-accent);
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    font-size: 28px;
}

.value-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.value-card p {
    color: var(--c-text-mute);
    font-size: 15px;
    line-height: 1.7;
    margin: 0;
}

@media (max-width: 1024px) {
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .values-grid {
        grid-template-columns: 1fr;
    }
}

/* ============== 案例卡片 ============== */
.cases {
    background: #fff;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.case-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all .3s var(--ease);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--c-border);
}

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

.case-thumb {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: #eee;
}

.case-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s var(--ease);
}

.case-card:hover .case-thumb img {
    transform: scale(1.06);
}

.case-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    background: rgba(0, 0, 0, .6);
    color: #fff;
    border-radius: var(--radius-pill);
    font-size: 12px;
}

.case-body {
    padding: 22px 22px 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.case-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--c-secondary);
    margin-bottom: 10px;
    line-height: 1.4;
}

.case-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    color: var(--c-text-mute);
    font-size: 13px;
    margin-bottom: 14px;
}

.case-meta span {
    display: inline-flex;
    align-items: center;
}

.case-meta span+span::before {
    content: '·';
    margin: 0 6px;
}

.case-link {
    margin-top: auto;
    color: var(--c-accent);
    font-weight: 600;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.case-link::after {
    content: '→';
    transition: transform .25s var(--ease);
}

.case-card:hover .case-link::after {
    transform: translateX(4px);
}

@media (max-width: 1024px) {
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .case-grid {
        grid-template-columns: 1fr;
    }
}

/* ============== 通用按钮区 ============== */
.section-cta {
    text-align: center;
    margin-top: 40px;
}

/* ============== 案例筛选 ============== */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    background: #fff;
    padding: 20px 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--c-border);
    margin-bottom: 32px;
    align-items: center;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-group label {
    font-size: 14px;
    color: var(--c-text-mute);
    margin-right: 4px;
}

.filter-chip {
    padding: 6px 14px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-pill);
    background: #fff;
    color: var(--c-text);
    font-size: 13px;
    cursor: pointer;
    transition: all .2s var(--ease);
}

.filter-chip:hover {
    border-color: var(--c-accent);
    color: var(--c-accent);
}

.filter-chip.active {
    background: var(--c-accent);
    border-color: var(--c-accent);
    color: #fff;
}

/* ============== 分页 ============== */
.pagination {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 40px;
}

.page-link {
    min-width: 38px;
    height: 38px;
    padding: 0 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    color: var(--c-text);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: all .2s var(--ease);
}

.page-link:hover {
    border-color: var(--c-accent);
    color: var(--c-accent);
}

.page-link.active {
    background: var(--c-accent);
    border-color: var(--c-accent);
    color: #fff;
}

/* ============== 服务分类卡片 ============== */
.services {
    background: #fff;
}

.service-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--c-border);
    transition: all .3s var(--ease);
    display: flex;
    flex-direction: column;
}

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

.service-card .cover {
    aspect-ratio: 16/9;
    overflow: hidden;
}

.service-card .cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s var(--ease);
}

.service-card:hover .cover img {
    transform: scale(1.05);
}

.service-card .body {
    padding: 24px 24px 28px;
}

.service-card h3 {
    font-size: 22px;
    margin-bottom: 8px;
}

.service-card .sub {
    color: var(--c-accent);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--c-text-mute);
    font-size: 14px;
    margin: 0 0 16px;
}

.service-features {
    margin: 12px 0 0;
    padding: 0;
}

.service-features li {
    padding: 6px 0;
    color: var(--c-text);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.service-features li::before {
    content: '✓';
    color: var(--c-accent);
    font-weight: 800;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

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

/* ============== 流程图 ============== */
.process {
    background: var(--c-bg);
}

.process-list {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 12px;
    position: relative;
}

.process-step {
    text-align: center;
    padding: 24px 12px;
    position: relative;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.process-num {
    width: 44px;
    height: 44px;
    margin: 0 auto 12px;
    background: var(--grad-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 18px;
}

.process-step h4 {
    font-size: 16px;
    margin-bottom: 6px;
}

.process-step p {
    color: var(--c-text-mute);
    font-size: 13px;
    margin: 0;
}

@media (max-width: 1024px) {
    .process-list {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 640px) {
    .process-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============== 设计师 ============== */
.designers {
    background: #fff;
}

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

/* 卡片折叠：第 5 张起默认隐藏 */
.designer-card.is-extra {
    display: none;
}

.designer-grid.is-expanded .designer-card.is-extra {
    display: block;
    animation: cardFadeIn .4s var(--ease);
}

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

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

/* 折叠/展开按钮 */
.collapsible-toggle {
    grid-column: 1 / -1;
    display: flex;
    justify-content: center;
    margin-top: 8px;
}

.btn-collapsible {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 36px;
    border-radius: 999px;
    background: #fff;
    color: var(--c-primary);
    border: 1.5px solid var(--c-primary);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all .25s var(--ease);
}

.btn-collapsible:hover {
    background: var(--c-primary);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(59, 107, 156, .25);
}

.btn-collapsible .arrow {
    display: inline-block;
    transition: transform .3s var(--ease);
    font-size: 18px;
    line-height: 1;
}

/* 展开状态：箭头向上、显示"收起"文字 */
.designer-grid.is-expanded .collapsible-toggle .btn-collapsible .arrow {
    transform: rotate(180deg);
}

.designer-grid.is-expanded .collapsible-toggle .btn-collapsible .text-more {
    display: none;
}

.designer-grid:not(.is-expanded) .collapsible-toggle .btn-collapsible .text-less {
    display: none;
}

.designer-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--c-border);
    transition: all .3s var(--ease);
}

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

.designer-photo {
    aspect-ratio: 1;
    overflow: hidden;
    background: #eee;
}

.designer-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background-color: #f5f5f5;
}

.designer-body {
    padding: 20px;
}

.designer-name {
    font-size: 20px;
    margin-bottom: 4px;
}

.designer-title {
    color: var(--c-accent);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 8px;
}

.designer-meta {
    color: var(--c-text-mute);
    font-size: 13px;
    margin-bottom: 8px;
}

.designer-meta span+span::before {
    content: '·';
    margin: 0 6px;
}

.designer-bio {
    color: var(--c-text-mute);
    font-size: 14px;
    line-height: 1.7;
}

@media (max-width: 1024px) {
    .designer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .designer-grid {
        grid-template-columns: 1fr;
    }
}

/* ============== 表单 ============== */
.form-row {
    margin-bottom: 18px;
}

.form-row label {
    display: block;
    font-size: 14px;
    color: var(--c-text);
    margin-bottom: 6px;
    font-weight: 500;
}

.form-row label .req {
    color: var(--c-error);
    margin-left: 2px;
}

.form-control {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--c-border);
    border-radius: var(--radius-md);
    background: #fff;
    transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
    outline: none;
}

.form-control:focus {
    border-color: var(--c-accent);
    box-shadow: 0 0 0 3px rgba(230, 126, 80, .15);
}

.form-row.row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

textarea.form-control {
    resize: vertical;
    min-height: 110px;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.checkbox-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border: 1.5px solid var(--c-border);
    border-radius: var(--radius-pill);
    cursor: pointer;
    font-size: 14px;
    transition: all .2s var(--ease);
}

.checkbox-pill input {
    display: none;
}

.checkbox-pill:has(input:checked) {
    background: var(--c-accent);
    color: #fff;
    border-color: var(--c-accent);
}

@media (max-width: 640px) {
    .form-row.row-2 {
        grid-template-columns: 1fr;
    }
}

/* ============== 联系我们 ============== */
.contact {
    background: #fff;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    align-items: start;
}

.contact-info {
    background: linear-gradient(135deg, var(--c-accent-light), #fff);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.contact-info h3 {
    font-size: 22px;
    margin-bottom: 18px;
}

.contact-list li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 12px 0;
    border-bottom: 1px dashed var(--c-border);
}

.contact-list li:last-child {
    border: 0;
}

.contact-list .ico {
    width: 36px;
    height: 36px;
    background: #fff;
    color: var(--c-accent);
    border: 1px solid var(--c-border);
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 36px;
    font-size: 16px;
}

.contact-list .meta {
    color: var(--c-text-mute);
    font-size: 13px;
}

.contact-list .val {
    color: var(--c-secondary);
    font-size: 15px;
    font-weight: 500;
    word-break: break-all;
}

.contact-form-card {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
}

.contact-form-card h3 {
    font-size: 22px;
    margin-bottom: 18px;
}

.map-wrap {
    margin-top: 32px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--c-border);
    background: #E4ECF4;
    aspect-ratio: 16/9;
}

.map-wrap iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

/* 静态地图占位 */
.map-static {
    display: block;
    margin-top: 32px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--c-border);
    background: linear-gradient(135deg, #E6EEFF 0%, #F5F7FB 100%);
    aspect-ratio: 16/9;
    text-decoration: none;
    color: inherit;
    transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}

.map-static:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.map-static-bg {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-marker {
    position: relative;
    z-index: 2;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-marker-pin {
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, .25));
    transform-origin: 50% 100%;
    transition: transform .35s var(--ease);
}

.map-static:hover .map-marker-pin {
    transform: translateY(-4px) scale(1.08);
}

.map-marker-pulse {
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    background: rgba(232, 163, 61, .35);
    animation: map-pulse 1.8s ease-out infinite;
    z-index: 1;
}

@keyframes map-pulse {
    0% {
        transform: scale(.6);
        opacity: .9;
    }

    100% {
        transform: scale(2.2);
        opacity: 0;
    }
}

.map-overlay {
    position: absolute;
    left: 50%;
    bottom: 24px;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, .95);
    backdrop-filter: blur(8px);
    border: 1px solid var(--c-border);
    border-radius: 12px;
    padding: 14px 22px;
    text-align: center;
    box-shadow: 0 8px 24px rgba(15, 42, 68, .12);
    z-index: 3;
    transition: transform .35s var(--ease);
}

.map-static:hover .map-overlay {
    transform: translateX(-50%) translateY(-2px);
}

.map-overlay-icon {
    font-size: 20px;
    margin-bottom: 4px;
}

.map-overlay-text {
    font-size: 14px;
    font-weight: 600;
    color: var(--c-secondary);
    margin-bottom: 2px;
}

.map-overlay-addr {
    font-size: 12px;
    color: var(--c-text-mute);
}

@media (max-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

/* ============== 知识库 ============== */
.knowledge {
    background: var(--c-bg);
}

.article-card {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 24px;
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all .3s var(--ease);
    box-shadow: var(--shadow-sm);
    margin-bottom: 20px;
}

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

.article-thumb {
    aspect-ratio: 4/3;
    overflow: hidden;
}

.article-thumb img {
    width: 100%;
    object-fit: cover;
    background-color: #f5f5f5;
    transition: transform .5s var(--ease);
}

.article-card:hover .article-thumb img {
    transform: scale(1.04);
}

.article-body {
    padding: 20px 24px 20px 0;
    display: flex;
    flex-direction: column;
}

.article-cat {
    display: inline-block;
    background: var(--c-accent-light);
    color: var(--c-accent);
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 10px;
    align-self: flex-start;
}

.article-title {
    font-size: 20px;
    margin-bottom: 8px;
    line-height: 1.4;
}

.article-title a {
    color: var(--c-secondary);
}

.article-title a:hover {
    color: var(--c-accent);
}

.article-sum {
    color: var(--c-text-mute);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 12px;
    flex: 1;
}

.article-meta {
    color: var(--c-text-mute);
    font-size: 13px;
    display: flex;
    gap: 16px;
}

.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

@media (max-width: 640px) {
    .article-card {
        grid-template-columns: 1fr;
    }

    .article-body {
        padding: 16px 18px 18px;
    }
}

/* ============== 文章详情 ============== */
.article-detail {
    background: #fff;
    padding: 60px 0 80px;
}

.article-content {
    max-width: 820px;
    margin: 0 auto;
    background: #fff;
    padding: 48px 56px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--c-border);
}

.article-content h1 {
    font-size: 32px;
    margin-bottom: 12px;
    line-height: 1.4;
}

.article-content .meta {
    color: var(--c-text-mute);
    font-size: 14px;
    margin-bottom: 28px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--c-border);
}

.article-content .body {
    font-size: 16px;
    line-height: 1.85;
    color: var(--c-text);
}

.article-content .body h3 {
    font-size: 22px;
    margin: 32px 0 12px;
}

.article-content .body p {
    margin: 0 0 16px;
}

.article-content .body img {
    border-radius: var(--radius-md);
    margin: 16px 0;
}

.article-content .body ul,
.article-content .body ol {
    padding-left: 24px;
    margin: 0 0 16px;
}

.article-content .body ul li,
.article-content .body ol li {
    list-style: disc;
    margin-bottom: 6px;
}

.article-content .body ol li {
    list-style: decimal;
}

.recommend {
    max-width: 820px;
    margin: 32px auto 0;
}

.recommend h3 {
    font-size: 20px;
    margin-bottom: 16px;
}

@media (max-width: 768px) {
    .article-content {
        padding: 24px;
    }

    .article-content h1 {
        font-size: 24px;
    }
}

/* ============== 案例详情 ============== */
.case-detail {
    background: #fff;
    padding: 40px 0 80px;
}

.case-hero {
    aspect-ratio: 16/9;
    background: #eee;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 32px;
}

.case-hero img {
    width: 100%;
    object-fit: cover;
    background-color: #f5f5f5;
}

.case-summary {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 32px;
}

.case-summary .info h1 {
    font-size: 32px;
    margin-bottom: 16px;
}

.case-summary .meta-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 24px;
}

.case-summary .meta-list span {
    padding: 6px 14px;
    background: var(--c-accent-light);
    color: var(--c-accent);
    border-radius: var(--radius-pill);
    font-size: 13px;
}

.case-summary .concepts {
    color: var(--c-text);
    line-height: 1.85;
}

.case-summary .concepts h3 {
    font-size: 20px;
    margin: 24px 0 12px;
}

.case-summary .materials {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.case-summary .materials h3 {
    font-size: 18px;
    margin-bottom: 14px;
}

.case-summary .materials li {
    padding: 6px 0;
    border-bottom: 1px dashed var(--c-border);
    font-size: 14px;
}

.case-summary .materials li:last-child {
    border: 0;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 32px;
}

.gallery img {
    width: 100%;
    object-fit: cover;
    background-color: #f5f5f5;
    border-radius: var(--radius-md);
}

@media (max-width: 1024px) {
    .case-summary {
        grid-template-columns: 1fr;
    }

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

/* ============== 底部 ============== */
.site-footer {
    background: var(--c-secondary);
    color: rgba(255, 255, 255, .85);
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    margin-bottom: 32px;
}

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

.footer-col p,
.footer-col a {
    color: rgba(255, 255, 255, .7);
    font-size: 14px;
    line-height: 1.85;
}

.footer-col a:hover {
    color: var(--c-accent);
}

.footer-col ul li {
    padding: 4px 0;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-logo .footer-logo-img {
    height: 60px;
    width: auto;
    max-width: 240px;
    display: block;
    border-radius: 6px;
    object-fit: cover;
}

.footer-logo .logo-mark {
    background: var(--grad-primary);
}

.footer-qr {
    display: flex;
    gap: 12px;
}

.footer-qr .qr {
    width: 84px;
    height: 84px;
    background: #fff;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-text-mute);
    font-size: 12px;
    text-align: center;
    line-height: 1.4;
    padding: 8px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1);
    padding-top: 20px;
    text-align: center;
    color: rgba(255, 255, 255, .55);
    font-size: 13px;
}

.footer-bottom a {
    color: rgba(255, 255, 255, .55);
    margin: 0 8px;
}

@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 640px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

/* ============== 浮动客服 ============== */
.float-actions {
    position: fixed;
    right: 20px;
    bottom: 24px;
    z-index: 90;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.float-btn {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    color: var(--c-accent);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--c-border);
    transition: all .25s var(--ease);
    cursor: pointer;
    position: relative;
}

.float-btn:hover {
    transform: translateY(-2px);
    color: var(--c-accent-dark);
}

.float-btn.primary {
    background: var(--c-accent);
    color: #fff;
    border-color: var(--c-accent);
}

.float-btn svg {
    width: 22px;
    height: 22px;
}

.float-btn .pulse {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 2px solid var(--c-accent);
    animation: pulse 1.6s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }

    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

/* ============== 弹窗 ============== */
.modal-mask {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(0, 0, 0, .5);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    transition: opacity .25s var(--ease);
}

.modal-mask.open {
    display: flex;
    opacity: 1;
}

/* Logo 移动端尺寸适配 */
@media (max-width: 768px) {
    .nav-logo .logo-img {
        height: 40px;
        max-width: 160px;
    }

    .footer-logo .footer-logo-img {
        height: 50px;
        max-width: 200px;
    }
}

/* 窄屏时品牌名称自动堆叠到 logo 图片下方，电话同步改为纵向堆叠 */
@media (max-width: 560px) {
    .nav-logo {
        flex-direction: column;
        align-items: center;
        gap: 4px;
        line-height: 1;
    }

    .nav-logo .logo-img {
        height: 34px;
        max-width: 130px;
    }

    .nav-logo span {
        font-size: 14px;
        font-weight: 700;
        white-space: nowrap;
    }

    .nav-phone {
        flex-direction: column;
        gap: 2px;
    }

    .nav-phone .phone-num {
        font-size: 11px;
        line-height: 1;
    }
}

.modal {
    background: #fff;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 520px;
    padding: 32px;
    transform: scale(.95);
    transition: transform .25s var(--ease);
    max-height: 92vh;
    overflow: auto;
}

.modal-mask.open .modal {
    transform: scale(1);
}

.modal h3 {
    font-size: 22px;
    margin-bottom: 8px;
}

.modal .sub {
    color: var(--c-text-mute);
    font-size: 14px;
    margin-bottom: 20px;
}

.modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: 0;
    font-size: 24px;
    color: var(--c-text-mute);
    cursor: pointer;
}

/* ============== 提示信息 ============== */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    font-size: 14px;
}

.alert-success {
    background: #ecf9ed;
    color: #2d7a31;
    border: 1px solid #bfe3c2;
}

.alert-error {
    background: #fdecec;
    color: #b32525;
    border: 1px solid #f3b6b6;
}

.alert-warn {
    background: #fff7e6;
    color: #8a5a00;
    border: 1px solid #f3dba1;
}

.alert-info {
    background: #e8f1fd;
    color: #1d4f8b;
    border: 1px solid #bdd6f7;
}

/* ============== 滚动入场动画 ============== */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .6s var(--ease), transform .6s var(--ease);
}

.fade-up.in {
    opacity: 1;
    transform: translateY(0);
}

/* ============== 安装页 ============== */
.install-page {
    background: #f4f1ec;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.install-wrap {
    background: #fff;
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    max-width: 480px;
    width: 100%;
}

.install-wrap h1 {
    font-size: 24px;
    margin-bottom: 20px;
}

.install-form {
    margin-top: 20px;
}

/* ============== 后台 ============== */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 220px;
    background: var(--c-secondary);
    color: #fff;
    padding: 24px 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow: auto;
}

.admin-sidebar .brand {
    padding: 0 24px 24px;
    border-bottom: 1px solid rgba(255, 255, 255, .1);
    margin-bottom: 16px;
    font-size: 18px;
    font-weight: 700;
}

.admin-sidebar a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    color: rgba(255, 255, 255, .7);
    font-size: 14px;
    transition: all .2s var(--ease);
}

.admin-sidebar a:hover,
.admin-sidebar a.active {
    background: rgba(255, 255, 255, .08);
    color: #fff;
}

.admin-main {
    flex: 1;
    padding: 32px;
}

.admin-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.admin-topbar h1 {
    font-size: 22px;
}

.admin-card {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--c-border);
    margin-bottom: 20px;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th,
.admin-table td {
    padding: 12px;
    border-bottom: 1px solid var(--c-border);
    text-align: left;
    font-size: 14px;
}

.admin-table th {
    background: #f9f7f5;
    color: var(--c-text-mute);
    font-weight: 600;
}

.admin-table tr:hover {
    background: #fafafa;
}

.admin-table .actions a,
.admin-table .actions button {
    margin-right: 8px;
    font-size: 13px;
}

.tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: 600;
}

.tag-ok {
    background: #ecf9ed;
    color: #2d7a31;
}

.tag-warn {
    background: #fff7e6;
    color: #8a5a00;
}

.tag-off {
    background: #f0f0f0;
    color: #888;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 20px;
    border: 1px solid var(--c-border);
}

.stat-card .label {
    color: var(--c-text-mute);
    font-size: 13px;
    margin-bottom: 8px;
}

.stat-card .num {
    font-size: 28px;
    font-weight: 800;
    color: var(--c-accent);
}

@media (max-width: 1024px) {
    .admin-layout {
        flex-direction: column;
    }

    .admin-sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }

    .admin-main {
        padding: 16px;
    }

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

/* ============== 杂项 ============== */
.text-mute {
    color: var(--c-text-mute);
}

.text-accent {
    color: var(--c-accent);
}

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

.mt-1 {
    margin-top: 8px;
}

.mt-2 {
    margin-top: 16px;
}

.mt-3 {
    margin-top: 24px;
}

.mt-4 {
    margin-top: 32px;
}

.mb-1 {
    margin-bottom: 8px;
}

.mb-2 {
    margin-bottom: 16px;
}

.mb-3 {
    margin-bottom: 24px;
}

.mb-4 {
    margin-bottom: 32px;
}