/* ==================== 设计系统 ==================== */
:root {
    /* 色彩 - 浅色素雅风 */
    --bg-primary: #ffffff;
    --bg-secondary: #f6f8fa;
    --bg-tertiary: #eef1f5;
    --bg-card: #ffffff;
    --text-primary: #1f2328;
    --text-secondary: #57606a;
    --text-tertiary: #8b949e;
    --accent-blue: #0969da;
    --accent-green: #1a7f37;
    --accent-orange: #bf8700;
    --accent-red: #cf222e;
    --border-primary: #d0d7de;
    --border-secondary: #e0e4e8;

    /* 字型 */
    --font-display: "SF Pro Display", "PingFang SC", "Source Han Sans CN", sans-serif;
    --font-body: "SF Pro Text", "PingFang SC", "Source Han Sans CN", sans-serif;
    --font-mono: "JetBrains Mono", "SF Mono", "Fira Code", monospace;

    /* 间距 */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;

    /* 过渡 */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* ==================== 基础重置 ==================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ==================== 布局 ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

section {
    padding: var(--space-4xl) 0;
    border-bottom: 1px solid var(--border-primary);
}

section:last-child {
    border-bottom: none;
}

/* ==================== 导航 ==================== */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-primary);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: 0.02em;
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
    list-style: none;
}

.nav-links a {
    font-size: 14px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--text-primary);
}

/* 汉堡菜单按钮（桌面端隐藏） */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 110;
}

.nav-toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.nav-toggle.active .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* 移动端遮罩层 */
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 99;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.nav-overlay.visible {
    opacity: 1;
}

/* ==================== Hero ==================== */
.hero {
    padding-top: calc(64px + var(--space-4xl));
    padding-bottom: var(--space-4xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    background: url('assets/hero-bg.svg') center center / cover no-repeat;
    opacity: 0.6;
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent-blue);
    background: rgba(9, 105, 218, 0.08);
    padding: 6px 16px;
    border: 1px solid rgba(9, 105, 218, 0.12);
    margin-bottom: var(--space-lg);
    letter-spacing: 0.05em;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(36px, 6vw, 64px);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(16px, 2.5vw, 20px);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

.hero-meta {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--text-tertiary);
}

.hero-meta span {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.hero-meta .dot {
    width: 6px;
    height: 6px;
    background: var(--accent-green);
    display: inline-block;
}

/* ==================== 架构图 ==================== */
.arch-section {
    background: var(--bg-secondary);
}

.section-header {
    margin-bottom: var(--space-3xl);
}

.section-label {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent-blue);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(24px, 4vw, 36px);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.section-desc {
    color: var(--text-secondary);
    margin-top: var(--space-sm);
    max-width: 600px;
}

/* 架构层级 */
.arch-layers {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.arch-layer {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.arch-layer-label {
    flex-shrink: 0;
    width: 120px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-tertiary);
    text-align: right;
}

.arch-layer-content {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.arch-node {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-secondary);
    padding: var(--space-md) var(--space-lg);
    font-size: 14px;
    font-weight: 500;
    transition: border-color var(--transition-fast);
}

.arch-node:hover {
    border-color: var(--accent-blue);
}

.arch-node.primary {
    border-color: var(--accent-blue);
    background: rgba(9, 105, 218, 0.04);
}

.arch-node small {
    display: block;
    font-size: 12px;
    font-weight: 400;
    color: var(--text-secondary);
    margin-top: 2px;
}

.arch-connector {
    display: flex;
    justify-content: center;
    padding: var(--space-sm) 0;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    font-size: 12px;
}

/* ==================== 岗位卡片 ==================== */
.roles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--space-lg);
}

.role-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    cursor: pointer;
    transition: border-color var(--transition-fast), background var(--transition-fast);
    overflow: hidden;
}

.role-card:hover {
    border-color: var(--border-secondary);
}

.role-card.expanded {
    border-color: var(--accent-blue);
}

.role-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
}

.role-card-title {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.role-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-secondary);
    font-family: var(--font-mono);
    font-size: 16px;
    font-weight: 600;
    color: var(--accent-blue);
}

.role-name {
    font-size: 16px;
    font-weight: 600;
}

.role-id {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 2px;
}

.role-toggle {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    transition: transform var(--transition-fast);
}

.role-card.expanded .role-toggle {
    transform: rotate(180deg);
}

.role-card-body {
    display: none;
    padding: 0 var(--space-lg) var(--space-lg);
    border-top: 1px solid var(--border-primary);
}

.role-card.expanded .role-card-body {
    display: block;
}

.role-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    padding-top: var(--space-md);
}

.role-section-title {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
    margin-top: var(--space-lg);
}

.role-section-title:first-of-type {
    margin-top: 0;
}

.role-list {
    list-style: none;
    font-size: 14px;
    color: var(--text-secondary);
}

.role-list li {
    padding: var(--space-xs) 0;
    padding-left: var(--space-md);
    position: relative;
}

.role-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    width: 4px;
    height: 4px;
    background: var(--text-tertiary);
}

/* Skill 标签 */
.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.skill-tag {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    padding: 4px 10px;
    cursor: default;
    transition: color var(--transition-fast), border-color var(--transition-fast);
    position: relative;
}

.skill-tag:hover {
    color: var(--text-primary);
    border-color: var(--border-secondary);
}

.skill-tag[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-secondary);
    color: var(--text-primary);
    font-size: 12px;
    padding: 6px 12px;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-fast);
    z-index: 10;
}

.skill-tag:hover[data-tooltip]::after {
    opacity: 1;
}

/* 可用度 */
.availability {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.availability-bar {
    flex: 1;
    height: 4px;
    background: var(--bg-tertiary);
    overflow: hidden;
}

.availability-fill {
    height: 100%;
    transition: width var(--transition-normal);
}

.availability-fill.high {
    background: var(--accent-green);
}

.availability-fill.medium {
    background: var(--accent-orange);
}

.availability-fill.low {
    background: var(--accent-red);
}

.availability-text {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-secondary);
    flex-shrink: 0;
    width: 40px;
    text-align: right;
}

/* ==================== Skill 矩阵 ==================== */
.matrix-section {
    background: var(--bg-secondary);
}

.matrix-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.matrix-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    padding: var(--space-lg);
}

.matrix-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-primary);
}

.matrix-card-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-blue);
}

.matrix-card-title {
    font-size: 15px;
    font-weight: 600;
}

.matrix-items {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.matrix-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    font-size: 13px;
}

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

.matrix-item-status {
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 2px 8px;
}

.matrix-item-status.ready {
    color: var(--accent-green);
    background: rgba(26, 127, 55, 0.08);
}

.matrix-item-status.partial {
    color: var(--accent-orange);
    background: rgba(191, 135, 0, 0.08);
}

.matrix-item-status.missing {
    color: var(--accent-red);
    background: rgba(207, 34, 46, 0.08);
}

/* ==================== 协作流程 ==================== */
.flow-diagram {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    padding: var(--space-2xl);
    overflow-x: auto;
}

.flow-row {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.flow-row:last-child {
    margin-bottom: 0;
}

.flow-node {
    flex-shrink: 0;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-secondary);
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-primary);
    min-width: 120px;
    text-align: center;
}

.flow-node.source {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.flow-node.target {
    border-color: var(--accent-green);
    color: var(--accent-green);
}

.flow-arrow {
    flex-shrink: 0;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    font-size: 12px;
}

.flow-label {
    flex: 1;
    font-size: 13px;
    color: var(--text-secondary);
    min-width: 0;
}

/* ==================== 项目类型 ==================== */
.project-types {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: var(--space-lg);
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    padding: var(--space-lg);
    transition: border-color var(--transition-fast);
}

.project-card:hover {
    border-color: var(--border-secondary);
}

.project-type-label {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent-orange);
    margin-bottom: var(--space-sm);
}

.project-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.project-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.project-roles {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.project-role {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    padding: 4px 10px;
}

.project-role.core {
    color: var(--accent-blue);
    border-color: rgba(9, 105, 218, 0.15);
}

.project-cmd {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent-green);
    background: var(--bg-tertiary);
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-primary);
}

/* ==================== 加载动画 ==================== */
.loading-screen {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease;
}

.loading-screen.fade-out {
    opacity: 0;
    pointer-events: none;
}

.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.loading-spinner {
    width: 36px;
    height: 36px;
    border: 2px solid var(--border-secondary);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-text {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.02em;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ==================== Footer ==================== */
footer {
    padding: var(--space-2xl) 0;
    border-top: 1px solid var(--border-primary);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--text-tertiary);
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* ==================== 响应式 ==================== */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }

    section {
        padding: var(--space-3xl) 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-overlay.active {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        width: 260px;
        height: 100vh;
        background: var(--bg-primary);
        border-left: 1px solid var(--border-primary);
        flex-direction: column;
        gap: 0;
        padding: 80px var(--space-lg) var(--space-lg);
        z-index: 105;
        transform: translateX(100%);
        transition: transform var(--transition-normal);
        overflow-y: auto;
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .nav-links li {
        border-bottom: 1px solid var(--border-secondary);
    }

    .nav-links li:last-child {
        border-bottom: none;
    }

    .nav-links a {
        display: block;
        padding: var(--space-md) 0;
        font-size: 16px;
    }

    .hero-meta {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .arch-layer {
        flex-direction: column;
        align-items: flex-start;
    }

    .arch-layer-label {
        width: auto;
        text-align: left;
    }

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

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

    .project-types {
        grid-template-columns: 1fr;
    }

    .flow-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .flow-arrow {
        transform: rotate(90deg);
        margin-left: var(--space-lg);
    }

    .footer-inner {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}

/* ==================== 可视化流程图 ==================== */
.flow-visual {
    display: flex;
    flex-direction: column;
    gap: var(--space-3xl);
}

.flow-hub {
    display: flex;
    justify-content: center;
}

.flow-hub-node {
    background: rgba(9, 105, 218, 0.06);
    border: 2px solid var(--accent-blue);
    padding: var(--space-lg) var(--space-2xl);
    text-align: center;
    position: relative;
}

.flow-hub-node .flow-hub-name {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
    color: var(--accent-blue);
}

.flow-hub-node .flow-hub-role {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 4px;
}

.flow-hub-arms {
    position: absolute;
    top: 50%;
    width: calc(100% + 80px);
    left: -40px;
    height: 1px;
    background: var(--border-secondary);
    z-index: 0;
}

.flow-line {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    padding: var(--space-xl);
}

.flow-line-header {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-primary);
}

.flow-line-header.product {
    color: var(--accent-blue);
    border-bottom-color: rgba(9, 105, 218, 0.15);
}

.flow-line-header.ops {
    color: var(--accent-green);
    border-bottom-color: rgba(63, 185, 80, 0.3);
}

.flow-steps {
    display: flex;
    align-items: center;
    gap: 0;
    overflow-x: auto;
    padding-bottom: var(--space-sm);
}

.flow-step {
    display: flex;
    align-items: center;
    gap: 0;
    flex-shrink: 0;
}

.flow-step-node {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-secondary);
    padding: var(--space-sm) var(--space-md);
    text-align: center;
    min-width: 120px;
    flex-shrink: 0;
}

.flow-step-node .step-role {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.flow-step-node .step-title {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-top: 2px;
}

.flow-step-node.active {
    border-color: var(--accent-blue);
    background: rgba(9, 105, 218, 0.04);
}

.flow-step-node.active-green {
    border-color: var(--accent-green);
    background: rgba(63, 185, 80, 0.05);
}

.flow-step-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 var(--space-sm);
    flex-shrink: 0;
    min-width: 80px;
}

.flow-step-connector .connector-line {
    width: 100%;
    height: 1px;
    background: var(--border-secondary);
    position: relative;
}

.flow-step-connector .connector-line::after {
    content: "";
    position: absolute;
    right: 0;
    top: -3px;
    width: 0;
    height: 0;
    border-left: 6px solid var(--border-secondary);
    border-top: 3px solid transparent;
    border-bottom: 3px solid transparent;
}

.flow-step-connector .connector-label {
    font-size: 11px;
    color: var(--text-tertiary);
    white-space: nowrap;
    margin-top: 4px;
}

.flow-merge {
    display: flex;
    justify-content: center;
    padding: var(--space-md) 0;
}

.flow-merge-line {
    width: 1px;
    height: 32px;
    background: var(--border-secondary);
    position: relative;
}

.flow-merge-line::before,
.flow-merge-line::after {
    content: "";
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--border-secondary);
    left: -2.5px;
}

.flow-merge-line::before {
    top: -3px;
}

.flow-merge-line::after {
    bottom: -3px;
}

/* ==================== 成长路线图 ==================== */
.roadmap {
    position: relative;
    padding-left: var(--space-2xl);
}

.roadmap::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-blue), var(--accent-green));
    opacity: 0.3;
}

.roadmap-item {
    position: relative;
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    margin-bottom: var(--space-lg);
    transition: border-color var(--transition-fast);
}

.roadmap-item:hover {
    border-color: var(--border-secondary);
}

.roadmap-item::before {
    content: "";
    position: absolute;
    left: calc(-1 * var(--space-2xl) + 4px);
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    background: var(--bg-primary);
    border: 2px solid var(--accent-blue);
}

.roadmap-item.retry::before {
    border-color: var(--accent-orange);
}

.roadmap-item.pending::before {
    border-color: var(--accent-blue);
}

.roadmap-item-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.roadmap-item-name {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.roadmap-item-badge {
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 2px 8px;
}

.roadmap-item-badge.retry {
    color: var(--accent-orange);
    background: rgba(191, 135, 0, 0.08);
    border: 1px solid rgba(191, 135, 0, 0.15);
}

.roadmap-item-badge.pending {
    color: var(--accent-blue);
    background: rgba(88, 166, 255, 0.1);
    border: 1px solid rgba(88, 166, 255, 0.2);
}

.roadmap-item-meta {
    display: flex;
    gap: var(--space-lg);
    font-size: 13px;
    color: var(--text-secondary);
}

.roadmap-item-meta span {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* ==================== 公司新闻 ==================== */
.news-timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.news-item {
    display: flex;
    gap: var(--space-xl);
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--border-primary);
}

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

.news-date {
    flex-shrink: 0;
    width: 100px;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-tertiary);
    padding-top: 2px;
}

.news-content {
    flex: 1;
    font-size: 15px;
    color: var(--text-primary);
    line-height: 1.5;
}

.news-content .news-tag {
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 2px 8px;
    margin-left: var(--space-sm);
    vertical-align: middle;
}

.news-tag.release {
    color: var(--accent-blue);
    background: rgba(88, 166, 255, 0.1);
}

.news-tag.install {
    color: var(--accent-green);
    background: rgba(26, 127, 55, 0.08);
}

.news-tag.cleanup {
    color: var(--accent-orange);
    background: rgba(191, 135, 0, 0.08);
}

.news-tag.launch {
    color: var(--accent-blue);
    background: rgba(88, 166, 255, 0.1);
}

/* ==================== 项目展示 ==================== */
.showcase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--space-lg);
}

.showcase-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    padding: var(--space-xl);
    transition: border-color var(--transition-fast);
    position: relative;
}

.showcase-card:hover {
    border-color: var(--border-secondary);
}

.showcase-status {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 3px 10px;
}

.showcase-status.done {
    color: var(--accent-green);
    background: rgba(26, 127, 55, 0.08);
    border: 1px solid rgba(26, 127, 55, 0.15);
}

.showcase-status.wip {
    color: var(--accent-orange);
    background: rgba(191, 135, 0, 0.08);
    border: 1px solid rgba(191, 135, 0, 0.15);
}

.showcase-status.planned {
    color: var(--text-tertiary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
}

.showcase-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    padding-right: 80px;
}

.showcase-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.showcase-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.showcase-tag {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    padding: 4px 10px;
}

/* ==================== 响应式补充 ==================== */
@media (max-width: 768px) {
    .flow-steps {
        flex-wrap: wrap;
        gap: var(--space-sm);
    }

    .flow-step-connector {
        min-width: 50px;
    }

    .news-item {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .news-date {
        width: auto;
    }

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

    .roadmap {
        padding-left: var(--space-xl);
    }
}

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

.animate-in {
    animation: fadeInUp 0.5s ease forwards;
    opacity: 0;
}

.animate-in:nth-child(1) { animation-delay: 0ms; }
.animate-in:nth-child(2) { animation-delay: 100ms; }
.animate-in:nth-child(3) { animation-delay: 200ms; }
.animate-in:nth-child(4) { animation-delay: 300ms; }
.animate-in:nth-child(5) { animation-delay: 400ms; }
.animate-in:nth-child(6) { animation-delay: 500ms; }
.animate-in:nth-child(7) { animation-delay: 600ms; }
.animate-in:nth-child(8) { animation-delay: 700ms; }

/* ==================== 返回顶部 ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent-blue);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    box-shadow: 0 2px 12px rgba(9, 105, 218, 0.3);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal), transform var(--transition-normal);
    z-index: 200;
}

.back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
}

.back-to-top:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(9, 105, 218, 0.4);
}

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

.back-to-top svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
    }
}