@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,600;9..144,700;9..144,800;9..144,900&family=Manrope:wght@300;400;500;600;700;800&family=Noto+Sans+SC:wght@400;500;700&family=Noto+Serif+SC:wght@400;600;900&display=swap');

:root {
    --color-primary: #5e6ad2;
    --color-primary-light: #8b5cf6;
    --color-primary-hover: #4f5bc4;
    --color-primary-bg: rgba(94, 106, 210, 0.08);
    
    --color-dark: #0a0a0a;
    --color-gray: #71717a;
    --color-gray-light: #a1a1aa;
    --color-gray-dark: #3f3f46;
    
    --color-light: #fafafa;
    --color-light-alt: #f4f4f5;
    --color-border: #e4e4e7;
    --color-border-light: #f4f4f5;
    --color-white: #ffffff;
    
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.03);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.02);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.05), 0 2px 4px rgba(0,0,0,0.02);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.08), 0 4px 8px rgba(0,0,0,0.03);
    --shadow-glow: 0 0 40px rgba(94, 106, 210, 0.12);
    
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-full: 9999px;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
}

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

body {
    font-family: 'Manrope', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', sans-serif;
    background-color: var(--color-light);
    color: var(--color-dark);
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    background-image: 
        linear-gradient(to right, rgba(0,0,0,0.01) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0,0,0,0.01) 1px, transparent 1px);
    background-size: 48px 48px;
    overflow-x: hidden;
}

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

/* 防止任何元素撑破移动端视口 */
img, video, iframe, table, pre, svg {
    max-width: 100% !important;
}
table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.post-content pre {
    word-break: break-all;
    white-space: pre-wrap;
    word-wrap: break-word;
}
.post-content p, .post-content li {
    overflow-wrap: break-word;
    word-break: break-word;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Fraunces', 'Noto Serif SC', Georgia, serif;
}

.gradient-bg {
    background: radial-gradient(circle at 10% 20%, rgba(245, 245, 247, 0.8) 0%, rgba(255,255,255,0) 70%);
}

.nav-blur {
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    background-color: rgba(250,250,250,0.8);
    border-bottom: 1px solid var(--color-border-light);
    transition: all var(--transition-normal);
}

.nav-blur.scrolled {
    background-color: rgba(250,250,250,0.92);
    box-shadow: var(--shadow-xs);
}

header .flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--color-dark);
    color: white;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    z-index: 50;
    opacity: 0;
    transform: translateY(20px);
}

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

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

.menu-btn {
    display: flex;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 6px;
    background: none;
    border: none;
    flex-shrink: 0;
    position: relative;
    z-index: 10;
    margin-left: 8px;
    transition: transform var(--transition-fast);
}

.menu-btn:hover { transform: scale(1.05); }
.menu-btn:active { transform: scale(0.95); }

.menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-dark);
    transition: all var(--transition-normal);
    border-radius: 2px;
}

.menu-btn.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-btn.open span:nth-child(2) { opacity: 0; transform: translateX(-10px); }
.menu-btn.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.nav-menu {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem 0.5rem;
    background: rgba(255,255,255,0.98);
    width: 100%;
    position: absolute;
    left: 0;
    top: 100%;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    z-index: 100;
    animation: slideDown 0.3s ease-out;
}

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

.nav-menu.open { display: flex; }
.nav-menu a {
    display: block;
    padding: 0.75rem 0;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-dark);
    text-decoration: none;
    width: 100%;
    text-align: center;
    transition: all var(--transition-fast);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: all var(--transition-normal);
    transform: translateX(-50%);
}

.nav-menu a:hover { 
    color: var(--color-primary); 
    transform: translateY(-2px);
}

.nav-menu a:hover::after { width: 30px; }
.nav-menu a.active { color: var(--color-primary); }
.nav-menu a.active::after { width: 30px; }

.nav-menu .lang-group-mobile { display: none !important; }

.nav-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

@media (min-width: 640px) {
    .menu-btn { display: none; }
    .nav-menu {
        display: flex !important;
        flex-direction: row;
        gap: 1.5rem;
        padding: 0;
        background: transparent;
        width: auto;
        position: static;
        border-bottom: none;
        box-shadow: none;
        margin: 0 auto;
        align-items: center;
    }
    .nav-menu a {
        display: inline;
        padding: 0;
        font-size: 0.875rem;
        width: auto;
    }
    .nav-menu a:hover { transform: translateY(0); }
    .nav-menu a::after { bottom: -4px; }
    .nav-menu .lang-group-mobile { display: none !important; }

    .nav-wrapper {
        margin-left: 0;
        flex: 0 0 auto;
    }
}

.lang-switcher-desktop {
    display: none;
    margin-left: 0.5rem;
    flex-shrink: 0;
}

.lang-switcher-desktop .lang-btn {
    cursor: pointer;
    user-select: none;
    transition: all var(--transition-fast);
    padding: 4px 12px;
    border-radius: 9999px;
    font-size: 0.7rem;
    font-weight: 500;
    background: transparent;
    border: 1px solid #d1d1d6;
    color: var(--color-dark);
    letter-spacing: 0.5px;
}

.lang-switcher-desktop .lang-btn:hover {
    background-color: rgba(0,0,0,0.06);
    transform: translateY(-1px);
}

.lang-switcher-desktop .lang-btn.active {
    background-color: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(0,113,227,0.3);
}

.lang-switcher-desktop .lang-btn.active:hover {
    background-color: var(--color-primary-hover);
}

@media (min-width: 640px) {
    .lang-switcher-desktop { display: inline-block; }
}

.nav-menu .lang-group-mobile {
    display: flex !important;
    gap: 8px;
    align-items: center;
    margin-top: 0.5rem;
    padding-top: 0.75rem;
    border-top: 1px solid #f0f0f0;
    width: 100%;
    justify-content: center;
}

.nav-menu .lang-group-mobile .lang-btn {
    cursor: pointer;
    user-select: none;
    transition: all var(--transition-fast);
    padding: 4px 12px;
    border-radius: 9999px;
    font-size: 0.75rem;
    background: transparent;
    border: none;
}

.nav-menu .lang-group-mobile .lang-btn:hover {
    background-color: rgba(0,0,0,0.06);
}

.nav-menu .lang-group-mobile .lang-btn.active {
    background-color: var(--color-primary);
    color: #fff;
    font-weight: 600;
}

.nav-menu .lang-group-mobile .lang-btn.active:hover {
    background-color: var(--color-primary-hover);
}

@media (min-width: 640px) {
    .nav-menu .lang-group-mobile { display: none !important; }
}

@keyframes fadeIn {
    0% { opacity: 0; }
    100% { opacity: 1; }
}

@keyframes fadeInUp {
    0% { opacity: 0; transform: translateY(24px); }
    100% { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
    0% { opacity: 0; transform: translateX(-24px); }
    100% { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
    0% { opacity: 0; transform: translateX(24px); }
    100% { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
    0% { opacity: 0; transform: scale(0.95); }
    100% { opacity: 1; transform: scale(1); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

@keyframes pulseSoft {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

@keyframes slideInBottom {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes numberRoll {
    0% { transform: translateY(100%); opacity: 0; }
    100% { transform: translateY(0); opacity: 1; }
}

.animate-fade-in { animation: fadeIn 0.6s ease-out forwards; }
.animate-fade-in-up { animation: fadeInUp 0.7s ease-out forwards; }
.animate-fade-in-left { animation: fadeInLeft 0.6s ease-out forwards; }
.animate-fade-in-right { animation: fadeInRight 0.6s ease-out forwards; }
.animate-scale-in { animation: scaleIn 0.5s ease-out forwards; }
.animate-float { animation: float 3s ease-in-out infinite; }
.animate-pulse-soft { animation: pulseSoft 2s ease-in-out infinite; }

.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

.opacity-0 { opacity: 0; }
.transition-opacity { transition: opacity var(--transition-normal); }
.transition-all { transition: all var(--transition-normal); }

.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.scroll-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

.scroll-animate-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.6s ease-out;
}

.scroll-animate-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.scroll-animate-right {
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.6s ease-out;
}

.scroll-animate-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.card-hover { 
    transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94); 
    background: var(--color-white);
    border: 1px solid var(--color-border-light);
}

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

.card-hover:active {
    transform: translateY(-2px);
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f8f8f8; }
::-webkit-scrollbar-thumb { 
    background: #c7c7c7; 
    border-radius: 12px;
    transition: background var(--transition-fast);
}
::-webkit-scrollbar-thumb:hover { background: #a8a8a8; }

img { 
    max-width: 100%; 
    height: auto; 
    display: block; 
    transition: transform var(--transition-normal);
}

img:hover { transform: scale(1.02); }

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

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(180deg, #6e7ae3 0%, #5e6ad2 100%);
    color: white;
    font-weight: 500;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    box-shadow:
        0 1px 0 rgba(255,255,255,0.1) inset,
        0 1px 2px rgba(0,0,0,0.1),
        0 4px 12px rgba(94, 106, 210, 0.2);
    cursor: pointer;
    border: none;
    font-size: 14px;
    letter-spacing: -0.01em;
}

.btn-primary:hover {
    background: linear-gradient(180deg, #7b87e8 0%, #6b77d6 100%);
    box-shadow:
        0 1px 0 rgba(255,255,255,0.15) inset,
        0 2px 4px rgba(0,0,0,0.1),
        0 8px 20px rgba(94, 106, 210, 0.25);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-white);
    color: var(--color-dark);
    font-weight: 500;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
    cursor: pointer;
    font-size: 14px;
    letter-spacing: -0.01em;
}

.btn-secondary:hover {
    border-color: var(--color-gray-light);
    background: var(--color-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.stat-number {
    display: block;
    font-size: 1.875rem;
    line-height: 2.25rem;
    font-weight: 700;
    font-family: 'Fraunces', 'Noto Serif SC', Georgia, serif;
    color: var(--color-dark);
    transition: color var(--transition-fast);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    line-height: 1.25rem;
    color: var(--color-gray);
    margin-top: 0.25rem;
}

.stat-container {
    background: var(--color-white);
    border: 1px solid var(--color-border-light);
    padding: 1.5rem 1.75rem;
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.stat-container:hover {
    border-color: var(--color-border);
    box-shadow: var(--shadow-sm);
    transform: translateY(-3px);
}

.stat-container:hover .stat-number {
    color: var(--color-primary);
}

@media (min-width: 640px) {
    .stat-number { font-size: 2.25rem; line-height: 2.5rem; }
}

.timeline-item {
    position: relative;
    padding-left: 2rem;
    padding-bottom: 2.5rem;
    border-left: 2px solid var(--color-border);
    transition: all 0.35s ease;
    opacity: 0;
    transform: translateX(-20px);
}

.timeline-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.timeline-item:last-child { 
    border-left: none; 
    padding-bottom: 0; 
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0.6rem;
    width: 10px;
    height: 10px;
    background: var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(0,113,227,0.15);
    transition: all 0.35s ease;
}

.timeline-item:hover::before {
    transform: scale(1.5);
    box-shadow: 0 0 0 8px rgba(0,113,227,0.2);
}

.timeline-item:hover .timeline-content { 
    transform: translateX(8px); 
    padding-left: 8px;
}

.timeline-content { 
    transition: all 0.35s ease; 
    padding-left: 0;
}

.timeline-year {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 0.05em;
}

.timeline-title {
    font-size: 1.1rem;
    font-weight: 600;
    font-family: 'Fraunces', 'Noto Serif SC', Georgia, serif;
    color: var(--color-dark);
    margin-top: 0.1rem;
}

.timeline-sub {
    font-size: 0.9rem;
    color: var(--color-gray);
    margin-top: 0.1rem;
}

.timeline-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 500;
    background: var(--color-light);
    color: #6e6e73;
    padding: 0.15rem 0.6rem;
    border-radius: 20px;
    margin-top: 0.4rem;
    transition: all var(--transition-fast);
}

.timeline-tag.highlight { 
    background: #e8f2ff; 
    color: var(--color-primary); 
}

.timeline-item:hover .timeline-tag {
    background: #e8f2ff;
    color: var(--color-primary);
    transform: scale(1.05);
}

.timeline-dot { position: relative; }
.timeline-dot::before {
    content: '';
    position: absolute;
    left: -1.25rem;
    top: 0.6rem;
    width: 0.5rem;
    height: 0.5rem;
    background-color: var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 0 0 3px rgba(0,113,227,0.15);
    transition: all var(--transition-normal);
}

.timeline-dot:hover::before {
    transform: scale(1.3);
    box-shadow: 0 0 0 5px rgba(0,113,227,0.2);
}

@media (max-width: 768px) {
    .timeline-dot::before { left: -0.9rem; }
}

.post-content h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-top: 2rem;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.post-content h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 1.75rem;
    margin-bottom: 0.75rem;
}

.post-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

.post-content p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-dark);
    margin-bottom: 1.25rem;
}

.post-content ul, .post-content ol { 
    padding-left: 1.5rem; 
    margin-bottom: 1.25rem; 
}

.post-content li { 
    margin-bottom: 0.5rem; 
    line-height: 1.7; 
}

.post-content blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: 1.5rem;
    margin: 1.5rem 0;
    color: #666;
    font-style: italic;
    background: rgba(0,113,227,0.03);
    padding: 1rem 1.5rem;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    margin: 1.5rem 0;
    box-shadow: var(--shadow-md);
}

.post-content code {
    background: #f1f1f1;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

.post-content pre {
    background: var(--color-dark);
    color: #e5e5e7;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    overflow-x: auto;
    margin: 1.5rem 0;
}

.post-content pre code { background: none; padding: 0; color: inherit; }

.post-content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color var(--transition-fast);
}

.post-content a:hover { color: var(--color-primary-hover); }

.post-content hr {
    border: 0;
    border-top: 1px dashed var(--color-border);
    margin: 2rem 0;
}

.post-content strong { font-weight: 600; }

@keyframes wave {
    0%, 100% { transform: scale(1); background-color: #d1d5db; }
    50% { transform: scale(1.4); background-color: var(--color-primary); }
}

#readingProgress { z-index: 50; }

.case-card { 
    transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1); 
    position: relative;
    overflow: hidden;
}

.case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0,113,227,0.05) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

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

.case-card:hover {
    transform: translateY(-8px) scale(1.01);
}

.case-card h3 { min-height: 3.5rem; }

.filter-btn {
    transition: all var(--transition-normal);
    cursor: pointer;
    user-select: none;
    position: relative;
    overflow: hidden;
}

.filter-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s, height 0.4s;
}

.filter-btn:active::after {
    width: 100px;
    height: 100px;
}

.filter-btn:active { transform: scale(0.95); }

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(8px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
}

.modal-overlay.active { opacity: 1; pointer-events: auto; }

.modal {
    background: white;
    border-radius: 28px;
    padding: 32px;
    max-width: 420px;
    width: 90%;
    box-shadow: 0 25px 60px -12px rgba(0,0,0,0.3);
    transform: translateY(30px) scale(0.95);
    transition: transform 0.4s cubic-bezier(0.32, 0.72, 0, 1);
    position: relative;
}

.modal-overlay.active .modal { 
    transform: translateY(0) scale(1); 
}

.copy-btn { 
    transition: all var(--transition-fast); 
    cursor: pointer; 
}

.copy-btn.copied { 
    background: #34c759; 
    color: white; 
    border-color: #34c759; 
}

.post-item { 
    transition: all 0.3s ease; 
    position: relative;
    border-color: var(--color-border-light);
}

.post-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    transform: scaleX(0);
    transition: transform 0.35s ease;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.post-item:hover {
    border-color: var(--color-border);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.post-item:hover::before {
    transform: scaleX(1);
}

.post-item:hover .post-title { color: var(--color-primary); }

.post-title { transition: color var(--transition-fast); }

.post-item:active { transform: scale(0.99); }

.service-card {
    transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    background: var(--color-white);
    border: 1px solid var(--color-border-light);
    text-align: left;
}

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

.service-card .w-10 {
    transition: all var(--transition-normal);
}

.service-card:hover .w-10 {
    transform: scale(1.1);
    background: linear-gradient(135deg, rgba(94, 106, 210, 0.18) 0%, rgba(139, 92, 246, 0.18) 100%) !important;
}

.story-card {
    transition: all 0.35s ease;
    padding: 2rem 1.5rem;
    text-align: center;
}

.story-card:hover {
    transform: translateY(-4px);
}

@media (min-width: 640px) {
    .story-card { padding: 3rem 2rem; }
}

.highlight-tag {
    position: relative;
    transition: all var(--transition-normal);
    background: var(--color-white) !important;
    border: 1px solid var(--color-border) !important;
    color: var(--color-gray-dark) !important;
    cursor: default;
}

.highlight-tag:hover {
    border-color: var(--color-primary) !important;
    color: var(--color-primary) !important;
    background: var(--color-primary-bg) !important;
    transform: translateY(-2px);
}

.footer-link {
    position: relative;
    transition: all var(--transition-fast);
}

.footer-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-dark);
    transition: width var(--transition-normal);
}

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

.brand-logo {
    transition: all var(--transition-normal);
}

.brand-logo:hover {
    opacity: 0.7;
    transform: scale(1.05);
}

.hero-title {
    position: relative;
}

.hero-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    border-radius: 2px;
    animation: gradientPulse 2s ease-in-out infinite;
}

@keyframes gradientPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--color-primary);
    z-index: 100;
    transition: width 0.3s ease;
}

.contact-card {
    transition: all 0.35s ease;
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md), var(--shadow-glow);
    border-color: var(--color-primary);
}

.timeline-dot.scroll-animate:nth-child(1) { transition-delay: 0ms; }
.timeline-dot.scroll-animate:nth-child(2) { transition-delay: 100ms; }
.timeline-dot.scroll-animate:nth-child(3) { transition-delay: 200ms; }
.timeline-dot.scroll-animate:nth-child(4) { transition-delay: 300ms; }
.timeline-dot.scroll-animate:nth-child(5) { transition-delay: 400ms; }

.timeline-dot.scroll-animate.visible .bg-blue-50,
.timeline-dot.scroll-animate.visible .bg-green-50,
.timeline-dot.scroll-animate.visible .bg-amber-50,
.timeline-dot.scroll-animate.visible .bg-indigo-50,
.timeline-dot.scroll-animate.visible .bg-purple-50 {
    animation: tagPop 0.4s ease-out forwards;
}

@keyframes tagPop {
    0% { transform: scale(0.8); opacity: 0; }
    60% { transform: scale(1.05); }
    100% { transform: scale(1); opacity: 1; }
}

.skill-item {
    padding: 0.75rem;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    cursor: default;
}

.skill-item:hover {
    background: rgba(255,255,255,0.8);
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
}

.skill-item:hover .font-semibold {
    color: var(--color-primary);
}

.skill-tag {
    transition: all 0.25s ease;
    cursor: default;
}

.skill-tag:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--color-primary);
    background: white;
}

.timeline-clickable {
    cursor: pointer;
    transition: all 0.3s ease;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
    padding-right: 0.5rem;
    border-radius: 0 12px 12px 0;
}

.timeline-clickable:hover {
    background: rgba(245,245,247,0.8);
    transform: translateX(4px);
}

.timeline-clickable:active {
    transform: translateX(2px) scale(0.99);
    background: rgba(240,240,242,0.9);
}

.timeline-clickable.clicked {
    animation: timelinePulse 0.4s ease-out;
}

@keyframes timelinePulse {
    0% { background: rgba(245,245,247,0.8); }
    30% { background: rgba(0,113,227,0.08); }
    100% { background: rgba(245,245,247,0.8); }
}

.animate-on-scroll {
    opacity: 0;
    transition: all 0.6s ease-out;
}

.animate-on-scroll.fade-in-up {
    transform: translateY(30px);
}

.animate-on-scroll.fade-in-left {
    transform: translateX(-30px);
}

.animate-on-scroll.fade-in-right {
    transform: translateX(30px);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translate(0);
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    justify-content: flex-end;
}

.post-tags .tag {
    font-size: 0.6rem;
    font-weight: 500;
    color: #6e6e73;
    background: var(--color-light);
    padding: 1px 8px;
    border-radius: 9999px;
    letter-spacing: 0.3px;
    transition: all var(--transition-fast);
}

.post-tags .tag:hover {
    background: rgba(0,113,227,0.1);
    color: var(--color-primary);
}

/* ===== PDF 预览弹窗 ===== */
.pdf-modal {
    max-width: min(1000px, 94vw);
    width: 94vw;
    height: 88vh;
    padding: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.pdf-modal__btn--icon {
    width: 34px;
    height: 34px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    background: var(--color-white);
    font-size: 22px;
    line-height: 1;
    color: var(--color-dark);
    cursor: pointer;
    transition: background var(--transition-fast), transform var(--transition-fast);
}
.pdf-modal__btn--icon:hover { background: var(--color-light); transform: scale(1.05); }
.pdf-modal__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}
.pdf-modal__title {
    font-family: 'Manrope', 'Noto Sans SC', sans-serif;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-dark);
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.pdf-modal__actions { display: flex; gap: 8px; flex-shrink: 0; }
.pdf-modal__btn {
    font-size: 13px;
    font-weight: 500;
    padding: 7px 16px;
    border-radius: var(--radius-full);
    text-decoration: none;
    color: var(--color-dark);
    background: var(--color-light);
    transition: background var(--transition-fast);
}
.pdf-modal__btn:hover { background: var(--color-border-light); }
.pdf-modal__btn--primary { background: var(--color-primary); color: #fff; }
.pdf-modal__btn--primary:hover { background: var(--color-primary-hover); }
.pdf-modal__body { flex: 1; min-height: 0; background: var(--color-light-alt); position: relative; }
.pdf-loading {
    position: absolute;
    inset: 0;
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    background: var(--color-light-alt);
    color: var(--color-gray, #6b7280);
    font-size: 14px;
}
.pdf-loading.hidden { display: none; }
.pdf-loading__spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(0,113,227,0.2);
    border-top-color: #0071e3;
    border-radius: 50%;
    animation: pdf-spin 0.8s linear infinite;
}
@keyframes pdf-spin { to { transform: rotate(360deg); } }
#pdfFrame { width: 100%; height: 100%; border: none; }