/* =========================================================
   iDarin 个人网站样式表
   绿色系主题 / 支持亮暗模式 / 响应式设计
   ========================================================= */

/* ==================== 设计变量 ==================== */
:root {
    /* 主色 */
    --color-primary: #2563EB;
    --color-primary-dark: #1D4ED8;
    --color-primary-light: #60A5FA;
    --color-primary-soft: rgba(37, 99, 235, 0.1);

    /* 亮色模式 */
    --bg-body: #FFFFFF;
    --bg-page: #FAFDFB;
    --bg-card: #FFFFFF;
    --bg-dark-section: #0F1F17;
    --bg-footer: #0A1A12;
    --bg-input: #FFFFFF;
    --bg-muted: #F0FDF4;

    --text-main: #1A2E1A;
    --text-heading: #0F1F17;
    --text-muted: #6B7280;
    --text-light: #FFFFFF;
    --text-light-muted: rgba(255, 255, 255, 0.75);

    --border-color: #E5E7EB;
    --border-color-strong: #D1D5DB;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);

    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 30px;
    --radius-full: 50%;

    --nav-bg: #0A1A12;
    --nav-text: #FFFFFF;

    --transition: all 0.3s ease;
    --transition-slow: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* 暗色模式 */
html[data-theme="dark"] {
    --bg-body: #0F1F17;
    --bg-page: #0F1F17;
    --bg-card: #142920;
    --bg-dark-section: #0A1A12;
    --bg-footer: #0A1A12;
    --bg-input: #142920;
    --bg-muted: #142920;

    --text-main: #E0E7E0;
    --text-heading: #FFFFFF;
    --text-muted: #9CA3AF;
    --text-light: #FFFFFF;
    --text-light-muted: rgba(255, 255, 255, 0.7);

    --border-color: #1F3D2E;
    --border-color-strong: #2F513C;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-main);
    background-color: var(--bg-body);
    line-height: 1.7;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

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

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

section {
    position: relative;
}

.text-accent {
    color: var(--color-primary) !important;
}

.link-accent {
    color: var(--color-primary);
    font-weight: 600;
}

.link-accent:hover {
    color: var(--color-primary-dark);
}

.link-accent i {
    margin-left: 6px;
    transition: transform 0.3s ease;
}

.link-accent:hover i {
    transform: translateX(4px);
}

/* ==================== 预加载动画 ==================== */
#preloader {
    position: fixed;
    inset: 0;
    background: var(--bg-body);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

body.loaded #preloader {
    opacity: 0;
    visibility: hidden;
}

.preloader-inner {
    position: relative;
    width: 120px;
    height: 120px;
}

.preloader-ring {
    position: absolute;
    inset: 0;
    border: 4px solid var(--bg-muted);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.preloader-brand {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
}

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

/* ==================== 按钮样式 ==================== */
.btn-accent {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--color-primary);
    color: white;
    border: 2px solid var(--color-primary);
    padding: 14px 32px;
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.btn-accent:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.4);
}

.btn-accent i {
    transition: transform 0.3s ease;
}

.btn-accent:hover i {
    transform: translateX(4px);
}

.btn-accent.btn-small {
    padding: 10px 24px;
    font-size: 0.95rem;
}

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

.btn-outline-dark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: transparent;
    color: var(--text-heading);
    border: 2px solid var(--text-heading);
    padding: 14px 32px;
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: var(--transition);
}

.btn-outline-dark:hover {
    background: var(--text-heading);
    color: var(--bg-body);
    transform: translateY(-3px);
}

html[data-theme="dark"] .btn-outline-dark:hover {
    color: var(--bg-body);
}

/* ==================== 导航栏 ==================== */
.nav-bar {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 32px);
    max-width: 1400px;
    z-index: 1000;
    background: var(--nav-bg);
    border-radius: var(--radius-lg);
    padding: 12px 24px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

.nav-bar.scrolled {
    padding: 10px 24px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.nav-link {
    color: var(--nav-text);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 6px 0;
    opacity: 0.85;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    opacity: 1;
    color: var(--color-primary);
}

.nav-link.active::after,
.nav-link:hover::after {
    width: 100%;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
    font-weight: 700;
    font-size: 1.4rem;
}

.brand-link:hover {
    color: var(--color-primary-light);
}

.brand-icon {
    width: 36px;
    height: 36px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}

/* 主题切换按钮 */
.theme-toggle {
    position: relative;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: var(--transition);
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(15deg);
}

.theme-toggle-icon {
    position: absolute;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.theme-toggle-icon.dark {
    opacity: 1;
    transform: scale(1) rotate(0);
}

.theme-toggle-icon.light {
    opacity: 0;
    transform: scale(0) rotate(-90deg);
}

html[data-theme="dark"] .theme-toggle-icon.dark {
    opacity: 0;
    transform: scale(0) rotate(90deg);
}

html[data-theme="dark"] .theme-toggle-icon.light {
    opacity: 1;
    transform: scale(1) rotate(0);
}

.theme-toggle-mobile {
    margin: 16px auto 0;
    display: none;
}

/* 移动端菜单按钮 */
.nav-mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.nav-mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: white;
    border-radius: 2px;
    transition: var(--transition);
    transform-origin: center;
}

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

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

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

/* 移动端菜单 */
.nav-mobile {
    display: none;
    flex-direction: column;
    align-items: center;
    padding: 24px 0;
    gap: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 16px;
}

.nav-mobile.open {
    display: flex;
    animation: slideDown 0.3s ease;
}

.nav-mobile .nav-link {
    font-size: 1.1rem;
}

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

/* ==================== 通用标题样式 ==================== */
.section-title {
    font-size: 2.6rem;
    font-weight: 700;
    color: var(--text-heading);
    line-height: 1.3;
    margin-bottom: 0;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-top: 16px;
    margin-bottom: 0;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.8;
}

/* ==================== Hero 首屏 ==================== */
.hero {
    padding: 160px 0 80px;
    background: var(--bg-page);
    transition: background-color 0.3s ease;
}

.hero-header {
    text-align: center;
    margin-bottom: 48px;
}

.greeting-bubble {
    display: inline-block;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 16px;
    position: relative;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.greeting-bubble::after {
    content: '';
    position: absolute;
    top: -6px;
    right: -6px;
    width: 14px;
    height: 14px;
    background: var(--color-primary);
    border-radius: 50%;
}

.hero-name {
    font-size: 3.8rem;
    font-weight: 900;
    color: var(--text-heading);
    margin-bottom: 8px;
    line-height: 1.2;
}

.hero-name .text-accent {
    position: relative;
}

.hero-role {
    font-size: 1.4rem;
    color: var(--text-muted);
    font-weight: 500;
}

.hero-side {
    padding: 30px 20px;
}

.hero-quote {
    position: relative;
    padding-left: 28px;
    max-width: 320px;
}

.hero-quote .quote-mark {
    position: absolute;
    left: 0;
    top: -16px;
    font-size: 3rem;
    color: var(--color-primary);
    font-family: Georgia, serif;
    line-height: 1;
}

.hero-quote p {
    font-size: 1.15rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin: 0;
}

.hero-stat {
    margin-top: 36px;
}

.hero-stat h3 {
    font-size: 2.6rem;
    font-weight: 800;
    color: var(--text-heading);
    margin-bottom: 4px;
    line-height: 1;
}

.hero-stat p {
    font-size: 1rem;
    color: var(--text-muted);
    margin: 0;
}

.hero-stars {
    color: #EF4444;
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.hero-portrait {
    position: relative;
    display: inline-block;
    max-width: 340px;
    width: 100%;
}

.hero-photo-bg {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    height: 75%;
    background: var(--color-primary);
    border-radius: 50%;
    z-index: 0;
}

.hero-photo {
    position: relative;
    z-index: 1;
    border-radius: 50%;
    overflow: hidden;
    aspect-ratio: 1 / 1;
    margin-bottom: -30px;
}

.hero-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.hero-actions {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    gap: 12px;
    padding: 14px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    margin: 0 20px;
    transition: background-color 0.3s ease;
}

.hero-actions .btn-accent,
.hero-actions .btn-outline-dark {
    padding: 12px 24px;
    font-size: 0.95rem;
}

/* ==================== 业务服务 ==================== */
.services {
    padding: 100px 0;
    background: var(--bg-dark-section);
    color: var(--text-light);
    margin: 0 16px;
    border-radius: var(--radius-lg);
    transition: background-color 0.3s ease;
}

.services .section-title {
    color: white;
}

.services .section-subtitle {
    color: var(--text-light-muted);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 20px;
}

.service-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 32px;
    height: 100%;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.service-card.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.service-card-head {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.service-card.active .service-card-head {
    border-bottom-color: rgba(255, 255, 255, 0.2);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: white;
}

.service-card.active .service-icon {
    background: rgba(255, 255, 255, 0.2);
}

.service-card-head h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    color: white;
}

.service-card-body p {
    color: var(--text-light-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.service-tags li {
    background: rgba(255, 255, 255, 0.1);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.85rem;
    color: white;
}

.service-card.active .service-tags li {
    background: rgba(255, 255, 255, 0.2);
}

/* ==================== 工作经历 ==================== */
.experience {
    padding: 100px 0;
    background: var(--bg-body);
    transition: background-color 0.3s ease;
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 33.33%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
    transform: translateX(-50%);
}

.timeline-row {
    display: flex;
    align-items: flex-start;
    margin-bottom: 60px;
    position: relative;
}

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

.timeline-meta {
    width: 50%;
    padding-right: 40px;
    text-align: right;
}

.timeline-meta h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 6px;
}

.timeline-period {
    display: inline-block;
    background: var(--color-primary-soft);
    color: var(--color-primary-dark);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
}

.timeline-marker {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--bg-body);
    border: 4px solid var(--border-color-strong);
    position: relative;
    z-index: 1;
    flex-shrink: 0;
    margin-top: 6px;
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

.timeline-marker.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 6px var(--color-primary-soft);
}

.timeline-content {
    width: 66.67%;
    padding-left: 40px;
}

.timeline-content h4 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 10px;
}

.timeline-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 0;
}

/* ==================== 为什么选择我 ==================== */
.about {
    padding: 100px 0;
    background: var(--bg-muted);
    transition: background-color 0.3s ease;
}

.about-wrapper {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 60px;
    box-shadow: var(--shadow);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.about-image {
    position: relative;
    max-width: 400px;
    margin: 0 auto;
}

.about-image-bg {
    position: absolute;
    top: 30px;
    left: -30px;
    width: 100%;
    height: 100%;
    background: var(--color-primary);
    border-radius: var(--radius-md);
    z-index: 0;
}

.about-image-frame {
    position: relative;
    z-index: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    aspect-ratio: 4 / 5;
    box-shadow: var(--shadow-lg);
}

.about-image-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-badge {
    position: absolute;
    bottom: 30px;
    right: -20px;
    z-index: 2;
    background: var(--bg-card);
    color: var(--color-primary);
    padding: 12px 20px;
    border-radius: 50px;
    font-weight: 700;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.3s ease;
}

.about-content {
    padding-left: 30px;
}

.about-content .section-title {
    margin-bottom: 20px;
}

.about-content .section-desc {
    margin-bottom: 30px;
}

.about-stats {
    margin-bottom: 32px;
}

.about-stat {
    margin-bottom: 20px;
}

.about-stat h3 {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--text-heading);
    margin-bottom: 4px;
    line-height: 1;
}

.about-stat p {
    color: var(--text-muted);
    margin: 0;
}

/* ==================== 作品案例 ==================== */
.portfolio {
    padding: 100px 0;
    background: var(--bg-body);
    transition: background-color 0.3s ease;
}

.portfolio-slider-wrap {
    position: relative;
}

.portfolio-item {
    padding: 12px;
}

.portfolio-item-bg {
    position: relative;
    aspect-ratio: 4 / 3;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--gradient);
    transition: transform 0.3s ease;
}

.portfolio-item:hover .portfolio-item-bg {
    transform: translateY(-6px);
}

.portfolio-item-overlay {
    position: absolute;
    inset: 0;
    padding: 28px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: white;
    background: rgba(0, 0, 0, 0.15);
}

.portfolio-category {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    width: fit-content;
}

.portfolio-item-overlay h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    line-height: 1.3;
}

.portfolio-tools {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.portfolio-tools span {
    background: rgba(255, 255, 255, 0.25);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
}

.portfolio-arrows {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    pointer-events: none;
    z-index: 10;
}

.portfolio-arrow {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    border: 3px solid white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    pointer-events: auto;
    box-shadow: var(--shadow);
}

.portfolio-arrow:hover {
    background: var(--color-primary-dark);
    transform: translateY(-3px);
}

.portfolio-arrow-prev {
    margin-left: -25px;
}

.portfolio-arrow-next {
    margin-right: -25px;
}

/* ==================== 滚动关键词 ==================== */
.marquee-section {
    padding: 24px 0;
    background: var(--color-primary);
    overflow: hidden;
    border-radius: var(--radius-lg);
    margin: 0 16px;
}

.marquee-track {
    display: flex;
    width: 100%;
    overflow: hidden;
}

.marquee-content {
    display: flex;
    align-items: center;
    white-space: nowrap;
    animation: marquee 25s linear infinite;
    color: white;
    font-size: 1.3rem;
    font-weight: 700;
    padding: 8px 0;
}

.marquee-content span {
    margin: 0 24px;
}

.marquee-content i {
    font-size: 0.8rem;
    opacity: 0.7;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ==================== 客户评价 ==================== */
.testimonials {
    padding: 100px 0;
    background: var(--bg-dark-section);
    color: white;
    margin-top: 80px;
    transition: background-color 0.3s ease;
}

.testimonials .section-title {
    color: white;
}

.testimonials .section-subtitle {
    color: var(--text-light-muted);
}

.section-star {
    color: #EF4444;
    font-size: 2rem;
    margin-bottom: 12px;
}

.testimonials-slider-wrap {
    position: relative;
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 32px;
    margin: 12px;
    height: 100%;
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-6px);
    border-color: rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.08);
}

.testimonial-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    color: #EF4444;
    margin-bottom: 16px;
}

.testimonial-rating span {
    color: white;
    font-weight: 700;
    margin-left: 8px;
}

.testimonial-text {
    color: var(--text-light-muted);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 24px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 14px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.author-info h4 {
    color: white;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.author-info p {
    color: var(--text-light-muted);
    font-size: 0.85rem;
    margin: 0;
}

.testimonials-arrows {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 32px;
}

.testimonials-arrow {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.testimonials-arrow:hover {
    background: var(--color-primary-dark);
    transform: translateY(-3px);
}

/* ==================== 博客 ==================== */
.blog {
    padding: 100px 0;
    background: var(--bg-body);
    transition: background-color 0.3s ease;
}

.blog-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    height: 100%;
    border: 1px solid var(--border-color);
}

.blog-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.blog-image {
    position: relative;
    height: 180px;
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 20px;
}

.blog-category {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    color: white;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

.blog-body {
    padding: 24px;
}

.blog-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 12px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.blog-meta i {
    margin-right: 4px;
}

.blog-body h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 12px;
    line-height: 1.4;
}

.blog-body h3 a:hover {
    color: var(--color-primary);
}

.blog-body p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 16px;
}

.blog-read {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.blog-read:hover {
    color: var(--color-primary-dark);
}

.blog-read i {
    margin-left: 4px;
    transition: transform 0.3s ease;
}

.blog-read:hover i {
    transform: translateX(4px);
}

/* ==================== 联系方式 ==================== */
.contact {
    padding: 100px 0;
    background: var(--bg-muted);
    transition: background-color 0.3s ease;
}

.contact-info {
    padding-right: 40px;
}

.contact-label {
    display: inline-block;
    background: var(--color-primary-soft);
    color: var(--color-primary-dark);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.contact-info .section-title {
    margin-bottom: 16px;
}

.contact-info .section-desc {
    margin-bottom: 36px;
}

.contact-methods {
    margin-bottom: 36px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.contact-method-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--bg-card);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    flex-shrink: 0;
}

.contact-method:hover .contact-method-icon {
    background: var(--color-primary);
    color: white;
    transform: translateY(-3px);
}

.contact-method-body h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 2px;
}

.contact-method-body p {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin: 0;
}

.contact-social {
    display: flex;
    gap: 12px;
}

.contact-social a {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-card);
    color: var(--text-heading);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.contact-social a:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-3px);
}

.contact-form-wrap {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 40px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.contact-form .form-control,
.contact-form .form-select {
    background: var(--bg-input);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 16px;
    height: auto;
    transition: var(--transition);
}

.contact-form .form-control:focus,
.contact-form .form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 0.25rem rgba(37, 99, 235, 0.15);
}

.contact-form .form-floating label {
    color: var(--text-muted);
    padding: 16px;
}

.contact-form .form-floating > .form-control:focus ~ label,
.contact-form .form-floating > .form-control:not(:placeholder-shown) ~ label,
.contact-form .form-floating > .form-select ~ label {
    color: var(--color-primary-dark);
    background: var(--bg-input);
    padding: 0 8px;
    transform: scale(0.85) translateY(-30px) translateX(8px);
}

.btn-submit {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: var(--color-primary);
    color: white;
    border: none;
    padding: 16px;
    border-radius: var(--radius-lg);
    font-weight: 700;
    font-size: 1.05rem;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.btn-submit:hover {
    background: var(--color-primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.4);
}

.btn-submit i {
    transition: transform 0.3s ease;
}

.btn-submit:hover i {
    transform: translateX(4px);
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--bg-footer);
    color: white;
    padding: 80px 0 0;
}

.footer-brand a {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
}

.footer-brand .brand-icon {
    width: 38px;
    height: 38px;
    font-size: 1.2rem;
}

.footer-desc {
    color: var(--text-light-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 24px;
    max-width: 320px;
}

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

.footer-social a {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--color-primary);
    transform: translateY(-3px);
}

.footer-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: white;
    margin-bottom: 24px;
    position: relative;
    padding-bottom: 12px;
}

.footer-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 30px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-light-muted);
    font-size: 0.95rem;
    transition: var(--transition);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--color-primary-light);
    transform: translateX(4px);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
    color: var(--text-light-muted);
    font-size: 0.95rem;
}

.footer-contact i {
    color: var(--color-primary);
    margin-top: 4px;
    flex-shrink: 0;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 60px;
    padding: 24px 0;
}

.copyright {
    color: var(--text-light-muted);
    font-size: 0.9rem;
    margin: 0;
}

.footer-bottom-links {
    display: flex;
    justify-content: flex-end;
    gap: 24px;
}

.footer-bottom-links a {
    color: var(--text-light-muted);
    font-size: 0.9rem;
}

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

/* ==================== 返回顶部 ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

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

.back-to-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-4px);
}

/* ==================== 博客开发中提示 ==================== */
.blog-toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-card);
    color: var(--text-heading);
    padding: 16px 28px;
    border-radius: 50px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    font-weight: 500;
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
    border: 1px solid var(--border-color);
}

.blog-toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.blog-toast i {
    color: var(--color-primary);
    font-size: 1.1rem;
}

/* ==================== 响应式适配 ==================== */
@media (max-width: 1199px) {
    .nav-menu {
        gap: 24px;
    }
    .hero-name {
        font-size: 3.2rem;
    }
    .section-title {
        font-size: 2.2rem;
    }
}

@media (max-width: 991px) {
    .nav-menu {
        display: none;
    }
    .nav-mobile-toggle {
        display: flex;
    }
    .theme-toggle-mobile {
        display: flex;
    }
    .nav-brand {
        margin: 0 auto;
    }
    .hero-name {
        font-size: 2.8rem;
    }
    .hero-side {
        text-align: center !important;
        padding: 20px 0;
    }
    .hero-quote {
        margin: 0 auto;
        max-width: 400px;
    }
    .hero-stat {
        margin-top: 24px;
    }
    .hero-stars {
        justify-content: center;
    }
    .about-wrapper {
        padding: 40px;
    }
    .about-content {
        padding-left: 0;
        margin-top: 40px;
    }
    .portfolio-arrow-prev {
        margin-left: 10px;
    }
    .portfolio-arrow-next {
        margin-right: 10px;
    }
    .contact-info {
        padding-right: 0;
        margin-bottom: 40px;
    }
    .timeline::before {
        left: 20px;
    }
    .timeline-row {
        flex-direction: column;
        padding-left: 50px;
    }
    .timeline-meta {
        width: 100%;
        text-align: left;
        padding-right: 0;
        margin-bottom: 12px;
    }
    .timeline-marker {
        position: absolute;
        left: 11px;
        top: 4px;
    }
    .timeline-content {
        width: 100%;
        padding-left: 0;
    }
}

@media (max-width: 767px) {
    .nav-bar {
        width: calc(100% - 24px);
        padding: 10px 16px;
    }
    .hero {
        padding: 140px 0 60px;
    }
    .hero-name {
        font-size: 2.2rem;
    }
    .hero-role {
        font-size: 1.1rem;
    }
    .hero-portrait {
        display: block;
        max-width: 280px;
        margin: 0 auto;
    }
    .section-title {
        font-size: 1.8rem;
    }
    .services {
        padding: 60px 0;
        margin: 0 12px;
    }
    .experience, .about, .portfolio, .testimonials, .blog, .contact {
        padding: 60px 0;
    }
    .about-wrapper {
        padding: 30px;
    }
    .about-image {
        max-width: 300px;
    }
    .testimonials {
        margin-top: 60px;
    }
    .marquee-section {
        margin: 0 12px;
    }
    .marquee-content {
        font-size: 1.1rem;
    }
    .portfolio-arrow {
        width: 42px;
        height: 42px;
    }
    .portfolio-arrow-prev {
        margin-left: 0;
    }
    .portfolio-arrow-next {
        margin-right: 0;
    }
    .contact-form-wrap {
        padding: 28px;
    }
    .footer-bottom-links {
        justify-content: flex-start;
        margin-top: 16px;
    }
}

@media (max-width: 575px) {
    .hero-actions {
        flex-direction: column;
    }
    .hero-actions .btn-accent,
    .hero-actions .btn-outline-dark {
        width: 100%;
    }
    .hero-photo {
        margin-bottom: -20px;
    }
    .hero-portrait {
        display: block;
        max-width: 240px;
        margin: 0 auto;
    }
    .about-stat h3 {
        font-size: 1.8rem;
    }
    .service-card {
        padding: 24px;
    }
    .service-card-head h3 {
        font-size: 1.25rem;
    }
    .testimonial-card {
        padding: 24px;
    }
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 374px) {
    .brand-text {
        font-size: 1.1rem;
    }
    .brand-icon {
        width: 30px;
        height: 30px;
        font-size: 0.95rem;
    }
    .hero-name {
        font-size: 1.8rem;
    }
    .section-title {
        font-size: 1.5rem;
    }
    .about-wrapper {
        padding: 20px;
    }
    .contact-form-wrap {
        padding: 20px;
    }
}