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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
    color: #101010;
    background: #ffffff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
    transition: opacity 0.15s ease;
}

a:hover {
    opacity: 0.7;
}

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

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

ul {
    list-style: none;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #ffffff;
    border-bottom: 1px solid #e5e5e5;
}

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

.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-brand {
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-logo {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    object-fit: cover;
}

.nav-menu {
    display: flex !important;
    align-items: center;
    gap: 4px;
    position: static !important;
    flex-direction: row !important;
    background: transparent !important;
    padding: 0 !important;
    border-bottom: none !important;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 2px;
}

.nav-link {
    font-size: 14px;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 8px;
    transition: background 0.15s ease;
}

.nav-link:hover {
    background: #f5f5f5;
    opacity: 1;
}

.nav-dropdown {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: background 0.15s ease;
}

.nav-dropdown::after {
    content: "";
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid #101010;
}

.nav-dropdown:hover {
    background: #f5f5f5;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.search-btn,
.mobile-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s ease;
    position: relative;
}

.search-btn::before {
    content: "";
    width: 16px;
    height: 16px;
    border: 2px solid #101010;
    border-radius: 50%;
}

.search-btn::after {
    content: "";
    width: 8px;
    height: 2px;
    background: #101010;
    position: absolute;
    transform: rotate(45deg) translate(6px, 6px);
}

.search-btn:hover,
.mobile-btn:hover {
    background: #f5f5f5;
}

.login-btn {
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: background 0.15s ease;
}

.login-btn:hover {
    background: #f5f5f5;
}

.try-btn {
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    background: #101010;
    color: #ffffff;
    transition: background 0.15s ease;
}

.try-btn:hover {
    background: #333333;
    opacity: 1;
}

.mobile-btn {
    display: none;
}

.mobile-btn::before {
    content: "";
    width: 18px;
    height: 2px;
    background: #101010;
    box-shadow: 0 -5px 0 #101010, 0 5px 0 #101010;
}

.hero-wrapper {
    max-width: 1280px;
    margin: 0 auto;
    width: 100%;
}

.hero {
    padding: 64px 0 32px;
    position: relative;
    display: flex;
    width: 100%;
    flex-direction: column;
    justify-content: center;
    min-height: 60vh;
}

.hero-inner {
    text-align: center;
    max-width: 1152px;
    margin: 0 auto;
}

.hero-title-wrap {
    margin-bottom: 24px;
}

.hero-title {
    font-size: 28px;
    font-weight: 600;
    letter-spacing: 0.3px;
    line-height: 34px;
    display: inline-block;
}

.chat-container {
    position: relative;
    z-index: 40;
    max-width: 900px;
    margin: 0 auto;
}

.chat-form {
    position: relative;
}

.chat-label {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    cursor: text;
    overflow: hidden;
    border-radius: 24px;
    padding: 20px 64px 20px 20px;
    border: 1px solid #e5e5e5;
    background: #fafafa;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.placeholder-texts {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    padding: 20px;
    pointer-events: none;
    min-height: 48px;
}

.placeholder-track {
    transform: translateY(-23lh);
    transition: transform 0.5s ease-in-out;
}

.placeholder-item {
    color: #6f6f6f;
    text-align: left;
    font-size: 16px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: opacity 0.5s ease;
}

.placeholder-item.opacity-0 {
    opacity: 0;
}

.placeholder-item.opacity-100 {
    opacity: 1;
}

.chat-textarea {
    width: 100%;
    resize: none;
    background: transparent;
    font-size: 16px;
    color: #101010;
    border: none;
    outline: none;
    font-family: inherit;
    line-height: 1.5;
    min-height: 48px;
}

.send-wrap {
    position: absolute;
    bottom: 12px;
    right: 12px;
    margin-top: auto;
    display: flex;
    justify-content: flex-end;
}

.send-button {
    position: relative;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    padding: 0;
    background: #101010;
    color: #fafafa;
    transition: background 0.15s ease, opacity 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.send-button:disabled {
    background: #f0f0f0;
    color: #999999;
}

.send-button:hover:not(:disabled) {
    opacity: 0.7;
}

.send-button:hover:disabled {
    opacity: 1;
}

.send-button svg {
    display: block;
    width: 54px;
    height: 54px;
}

.links-container {
    margin-top: 24px;
    width: 100%;
    min-height: 96px;
}

.links-wrap {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    gap: 12px;
    max-width: 100%;
    margin: 0 auto;
    width: 100%;
    overflow-x: auto;
    padding: 4px 0;
}

.splash-link,
.more-button {
    display: inline-flex;
    align-items: center;
    height: 40px;
    padding: 0 12px;
    white-space: nowrap;
    border: 1px solid #e5e5e5;
    background: transparent;
    border-radius: 9999px;
    font-size: 14px;
    color: #101010;
    transition: border-color 0.25s ease, background 0.25s ease;
    text-decoration: none;
}

.splash-link:hover,
.more-button:hover {
    border-color: #101010;
    background: #f5f5f5;
    opacity: 1;
}

.splash-link span,
.more-button span {
    color: #6f6f6f;
    position: relative;
}

.splash-link:hover span,
.more-button:hover span {
    color: #101010;
}

.more-button {
    cursor: pointer;
    min-height: 40px;
    gap: 4.8px;
}

.more-btn {
    font-size: 13px;
    padding: 8px 16px;
    border: 1px solid #e5e5e5;
    border-radius: 20px;
    background: transparent;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.more-btn:hover {
    border-color: #101010;
}

/* 分类页面样式 */
.category-section {
    padding: 60px 0;
    background: #f8f9fa;
}

.category-header {
    margin-bottom: 40px;
    text-align: center;
}

.category-header h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #333;
}

.category-breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 16px;
    color: #666;
}

.category-breadcrumb a {
    color: #007bff;
    text-decoration: none;
}

.category-breadcrumb a:hover {
    text-decoration: underline;
}

.category-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.category-nav-item {
    padding: 12px 24px;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 25px;
    color: #333;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.category-nav-item:hover {
    background: #f0f0f0;
    transform: translateY(-2px);
}

.category-nav-item.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
}

.articles-grid {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    padding: 20px 0;
    margin: 0 -24px;
    scrollbar-width: thin;
    scrollbar-color: #e0e0e0 #f5f5f5;
}

.articles-grid::-webkit-scrollbar {
    height: 6px;
}

.articles-grid::-webkit-scrollbar-track {
    background: #f5f5f5;
    border-radius: 3px;
}

.articles-grid::-webkit-scrollbar-thumb {
    background: #e0e0e0;
    border-radius: 3px;
}

.articles-grid::-webkit-scrollbar-thumb:hover {
    background: #d0d0d0;
}

.article-card {
    flex: 0 0 320px;
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    text-decoration: none;
    color: #333;
    border: 1px solid #f0f0f0;
}

.article-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(0,0,0,0.15);
    border-color: #e0e0e0;
}

.article-card-content {
    padding: 32px;
}

.article-card-category {
    display: inline-block;
    padding: 8px 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.article-card-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.4;
    color: #1a1a1a;
}

.article-card-date {
    font-size: 14px;
    color: #666;
    font-weight: 500;
}

/* 美化分类页面整体 */
.category-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9ff 0%, #ffffff 100%);
}

.category-header {
    margin-bottom: 60px;
    text-align: center;
}

.category-header h1 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 24px;
    color: #1a1a1a;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.category-breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 16px;
    color: #666;
}

.category-breadcrumb a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
}

.category-breadcrumb a:hover {
    text-decoration: underline;
}

.category-nav {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.category-nav-item {
    padding: 14px 28px;
    background: #fff;
    border: 2px solid #e0e0e0;
    border-radius: 30px;
    color: #333;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.category-nav-item:hover {
    background: #f8f9ff;
    border-color: #667eea;
    transform: translateY(-2px);
}

.category-nav-item.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
}

/* 简约分类页面样式 */
.minimal-category-section {
    padding: 120px 0;
    background: #ffffff;
}

.minimal-category-header {
    margin-bottom: 80px;
}

.minimal-back-link {
    display: inline-block;
    font-size: 15px;
    color: #666666;
    text-decoration: none;
    margin-bottom: 32px;
    font-weight: 500;
    transition: color 0.2s ease;
}

.minimal-back-link:hover {
    color: #111111;
}

.minimal-category-header h1 {
    font-size: 56px;
    font-weight: 700;
    color: #111111;
    margin: 0;
    letter-spacing: -0.02em;
}

.minimal-category-nav {
    display: flex;
    gap: 32px;
    margin-bottom: 80px;
    border-bottom: 1px solid #eeeeee;
    padding-bottom: 24px;
}

.minimal-nav-item {
    font-size: 15px;
    font-weight: 600;
    color: #999999;
    text-decoration: none;
    padding-bottom: 8px;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.minimal-nav-item:hover {
    color: #111111;
}

.minimal-nav-item.active {
    color: #111111;
    border-bottom-color: #111111;
}

.minimal-articles-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.minimal-article-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 32px 0;
    border-bottom: 1px solid #eeeeee;
    text-decoration: none;
    color: #111111;
    transition: all 0.2s ease;
}

.minimal-article-item:first-child {
    padding-top: 0;
}

.minimal-article-item:hover {
    background: #fafafa;
    margin: 0 -24px;
    padding-left: 24px;
    padding-right: 24px;
}

.minimal-article-content {
    display: flex;
    align-items: baseline;
    gap: 32px;
    flex: 1;
}

.minimal-article-date {
    font-size: 14px;
    font-weight: 500;
    color: #999999;
    min-width: 110px;
    font-family: 'SF Mono', Monaco, monospace;
}

.minimal-article-title {
    font-size: 20px;
    font-weight: 600;
    color: #111111;
    margin: 0;
    line-height: 1.4;
}

.minimal-article-arrow {
    font-size: 20px;
    color: #cccccc;
    opacity: 0;
    transition: all 0.2s ease;
    transform: translateX(-8px);
}

.minimal-article-item:hover .minimal-article-arrow {
    opacity: 1;
    transform: translateX(0);
    color: #111111;
}

@media (max-width: 768px) {
    .minimal-category-section {
        padding: 80px 0;
    }

    .minimal-category-header h1 {
        font-size: 40px;
    }

    .minimal-category-nav {
        gap: 24px;
        overflow-x: auto;
        padding-bottom: 16px;
    }

    .minimal-nav-item {
        white-space: nowrap;
    }

    .minimal-article-item {
        padding: 24px 0;
    }

    .minimal-article-content {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }

    .minimal-article-date {
        min-width: auto;
    }

    .minimal-article-title {
        font-size: 18px;
    }
}

.featured,
.cards-section {
    padding: 64px 0;
}

.featured-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 36px;
    margin-bottom: 48px;
}

.featured-card {
    display: block;
    border-radius: 20px;
    overflow: hidden;
    transition: transform 0.2s ease;
    background: #ffffff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.featured-card:hover {
    transform: translateY(-6px);
    opacity: 1;
}

.featured-large {
    grid-row: span 2;
    position: relative;
}

.featured-large.sticky-active {
    position: sticky;
    top: 100px;
    align-self: start;
}

.featured-img {
    aspect-ratio: 16/9;
    overflow: hidden;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.featured-small .featured-img {
    aspect-ratio: 4/3;
}

.img-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f5f5f5 0%, #e5e5e5 100%);
}

.img-hero {
    background: linear-gradient(135deg, #ff6b9d 0%, #c44569 50%, #f8b500 100%);
}

.img-small-1 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.img-small-2 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.img-small-3 {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.featured-small {
    display: flex;
    flex-direction: column;
    gap: 36px;
}

.featured-text {
    padding: 28px 16px 0;
    position: relative;
    z-index: 1;
}

.featured-text h2 {
    font-size: 32px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    line-height: 1.25;
    text-align: center;
    background: rgba(255, 255, 255, 0.95);
    padding: 16px;
    border-radius: 8px;
}

.featured-text h3 {
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 12px;
    line-height: 1.3;
}

.featured-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 16px;
    color: #6f6f6f;
}

.meta-cat::after {
    content: "";
    display: inline-block;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: #6f6f6f;
    margin-left: 12px;
}

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

.section-head h2 {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.02em;
    text-align: center;
}

.section-link {
    font-size: 14px;
    font-weight: 500;
    color: #6f6f6f;
}

.section-link:hover {
    color: #101010;
    opacity: 1;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

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

.card {
    display: block;
    border-radius: 16px;
    overflow: hidden;
    transition: transform 0.2s ease;
}

.card:hover {
    transform: translateY(-6px);
    opacity: 1;
}

.card-img {
    aspect-ratio: 4/3;
    overflow: hidden;
    border-radius: 16px;
    margin-bottom: 24px;
}

.card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-img-1 {
    background: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%);
}

.card-img-2 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.card-img-3 {
    background: linear-gradient(135deg, #89f7fe 0%, #66a6ff 100%);
}

.card-img-4 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.card-img-5 {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.card-img-6 {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.customer-img-1 {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
}

.customer-img-2 {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
}

.customer-img-3 {
    background: linear-gradient(135deg, #d299c2 0%, #fef9d7 100%);
}

.research-img-1 {
    background: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 100%);
}

.research-img-2 {
    background: linear-gradient(135deg, #f6d365 0%, #fda085 100%);
}

.research-img-3 {
    background: linear-gradient(135deg, #84fab0 0%, #8fd3f4 100%);
}

.enterprise-img-1 {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.enterprise-img-2 {
    background: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
}

.card-img-1 {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.card-img-2 {
    background: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%);
}

.card-img-3 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.card-img-4 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.card-img-5 {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.card-img-6 {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.card-img-7 {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.card-img-8 {
    background: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%);
}

.card-img-9 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.card-img-10 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.card-img-11 {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.card-img-12 {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.card-img-13 {
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
}

.card-img-14 {
    background: linear-gradient(135deg, #a1c4fd 0%, #c2e9fb 100%);
}

.card-text {
    padding: 0 4px;
}

.card-text h3 {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.01em;
    line-height: 1.4;
    margin-bottom: 8px;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: #6f6f6f;
}

.card-tag::after {
    content: "";
    display: inline-block;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: #6f6f6f;
    margin-left: 8px;
}

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

.view-more-link {
    font-size: 14px;
    font-weight: 500;
    color: #101010;
    padding: 10px 20px;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    display: inline-block;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.view-more-link:hover {
    border-color: #101010;
    background: #f5f5f5;
    opacity: 1;
}

footer {
    border-top: 1px solid #e5e5e5;
    padding: 64px 0 40px;
    margin-top: 48px;
    background: #fafafa;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 48px;
}

.footer-section h3 {
    font-size: 20px;
    font-weight: 700;
    color: #101010;
    margin-bottom: 16px;
}

.footer-section h4 {
    font-size: 14px;
    font-weight: 600;
    color: #101010;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-section p {
    font-size: 14px;
    color: #6f6f6f;
    line-height: 1.6;
    margin: 0;
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-section a {
    font-size: 14px;
    color: #6f6f6f;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-section a:hover {
    color: #101010;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid #e5e5e5;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
}

.footer-bottom p {
    font-size: 13px;
    color: #6f6f6f;
    margin: 0;
}

.footer-info-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

.footer-phone,
.footer-email {
    font-size: 13px;
    color: #6f6f6f;
    transition: color 0.2s ease;
}

.footer-phone:hover,
.footer-email:hover {
    color: #101010;
}

.footer-icp {
    font-size: 13px;
    color: #6f6f6f;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-icp:hover {
    color: #101010;
    opacity: 1;
}

.footer-address {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid #f0f0f0;
}

.footer-address p {
    font-size: 13px;
    color: #6f6f6f;
    margin: 4px 0;
    line-height: 1.6;
}

.footer-section-with-qrcode {
    flex: 0 0 auto;
}

.footer-section-content {
    display: flex;
    gap: 80px;
    align-items: flex-start;
    justify-content: flex-end;
}

.footer-qrcode-container {
    cursor: pointer;
    text-align: center;
    transition: transform 0.2s ease;
}

.footer-qrcode-container:hover {
    transform: translateY(-2px);
}

.footer-qrcode {
    max-width: 120px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transition: box-shadow 0.2s ease;
}

.footer-qrcode-container:hover .footer-qrcode {
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    
    .footer-info-right {
        flex-direction: column;
        gap: 8px;
    }
    
    .footer-section-content {
        justify-content: flex-start;
    }
    
    .footer-qrcode-container {
        text-align: left;
    }
    
    .footer-qrcode {
        max-width: 100px;
    }
    
    .footer-address {
        text-align: center;
        padding-left: 16px;
        padding-right: 16px;
    }
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px 24px;
    margin-bottom: 48px;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col h3 {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 4px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-col a {
    font-size: 14px;
    color: #6f6f6f;
    transition: color 0.15s ease;
}

.footer-col a:hover {
    color: #101010;
    opacity: 1;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid #e5e5e5;
}

.social-links {
    display: flex;
    gap: 20px;
}

.social-links a {
    font-size: 14px;
    color: #6f6f6f;
    font-weight: 500;
}

.social-links a:hover {
    color: #101010;
}

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

.footer-btns button {
    font-size: 14px;
    color: #6f6f6f;
    padding: 8px 0;
    transition: color 0.15s ease;
}

.footer-btns button:hover {
    color: #101010;
}

@media (max-width: 1024px) {
    .nav-menu,
    .nav-actions {
        display: none !important;
    }
    
    .nav-menu.mobile-open {
        display: flex !important;
        flex-direction: column !important;
        position: absolute !important;
        top: 64px;
        left: 0;
        right: 0;
        background: #ffffff !important;
        border-bottom: 1px solid #e5e5e5 !important;
        padding: 16px 24px !important;
        z-index: 99;
        gap: 12px;
    }
    
    .nav-actions.mobile-open {
        display: flex !important;
        position: absolute !important;
        top: 140px;
        left: 0;
        right: 0;
        background: #ffffff !important;
        padding: 16px 24px !important;
        z-index: 99;
        justify-content: center;
    }
    
    .mobile-btn {
        display: flex;
    }
    
    .featured-grid {
        grid-template-columns: 1fr;
    }
    
    .featured-large {
        grid-row: auto;
    }
    
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-wrapper {
        height: auto;
    }
    
    .hero {
        min-height: 50vh;
        padding: 48px 0 24px;
    }
    
    .hero-title {
        font-size: 24px;
        line-height: 30px;
    }
    
    .chat-label {
        padding: 16px 56px 16px 16px;
    }
    
    .placeholder-texts {
        padding: 16px;
    }
    
    .links-wrap {
        gap: 8px;
    }
    
    .splash-link,
    .more-button {
        height: 36px;
        padding: 0 10px;
        font-size: 13px;
    }
    
    .featured-text {
        padding: 20px 12px 0;
    }
    
    .featured-text h2 {
        font-size: 24px;
        padding: 12px;
    }
    
    .featured-text h3 {
        font-size: 16px;
    }
    
    .section-head h2 {
        font-size: 18px;
    }
    
    .card-text h3 {
        font-size: 14px;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding: 40px 0 20px;
        min-height: 40vh;
    }
    
    .hero-title {
        font-size: 20px;
        line-height: 26px;
    }
    
    .chat-container {
        max-width: 100%;
    }
    
    .chat-label {
        padding: 12px 48px 12px 12px;
        border-radius: 16px;
    }
    
    .placeholder-texts {
        padding: 12px;
    }
    
    .placeholder-item {
        font-size: 14px;
    }
    
    .send-button {
        width: 32px;
        height: 32px;
    }
    
    .links-container {
        margin-top: 16px;
        min-height: 80px;
    }
    
    .links-wrap {
        gap: 6px;
    }
    
    .splash-link,
    .more-button {
        height: 32px;
        padding: 0 8px;
        font-size: 12px;
    }
    
    .featured,
    .cards-section {
        padding: 48px 0;
    }
    
    .featured-grid {
        gap: 24px;
    }
    
    .featured-small {
        gap: 24px;
    }
    
    .featured-text {
        padding: 16px 10px 0;
    }
    
    .featured-text h2 {
        font-size: 20px;
        padding: 10px;
    }
    
    .featured-text h3 {
        font-size: 15px;
    }
    
    .section-head {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .section-head h2 {
        font-size: 18px;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .card-img {
        margin-bottom: 16px;
    }
    
    .card-text h3 {
        font-size: 15px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px 20px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 24px;
        align-items: flex-start;
    }
    
    .social-links {
        gap: 16px;
    }
    
    .footer-btns {
        gap: 10px;
    }
    
    .minimal-category-section {
        padding: 60px 0;
    }
    
    .minimal-category-header {
        margin-bottom: 60px;
    }
    
    .minimal-category-header h1 {
        font-size: 32px;
    }
    
    .minimal-category-nav {
        gap: 16px;
        margin-bottom: 60px;
    }
    
    .minimal-article-item {
        padding: 20px 0;
    }
    
    .minimal-article-title {
        font-size: 16px;
    }
    
    .article-container {
        padding: 80px 16px 40px;
    }
    
    .article-title {
        font-size: 28px;
    }
    
    .article-content {
        font-size: 16px;
    }
    
    .article-content p:first-of-type {
        font-size: 18px;
    }
    
    .article-content h2 {
        font-size: 22px;
    }
}

.article-container {
    max-width: 720px;
    margin: 0 auto;
    padding: 140px 24px 100px;
}

.article-breadcrumb {
    color: #999;
    font-size: 14px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.article-breadcrumb a {
    color: #666;
    text-decoration: none;
    transition: color 0.2s;
}

.article-breadcrumb a:hover {
    color: #101010;
}

.article-header {
    margin-bottom: 56px;
}

.article-category {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: linear-gradient(135deg, #f5f5f5 0%, #fafafa 100%);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: #101010;
    margin-bottom: 24px;
    letter-spacing: 0.3px;
}

.article-category::before {
    content: '';
    width: 6px;
    height: 6px;
    background: linear-gradient(135deg, #101010 0%, #666 100%);
    border-radius: 50%;
}

.article-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.15;
    color: #101010;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.article-divider {
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, #101010 0%, #666 100%);
    border-radius: 2px;
    margin-bottom: 40px;
}

.article-content {
    font-size: 18px;
    line-height: 1.9;
    color: #333;
    letter-spacing: 0.01em;
}

.article-content p {
    margin-bottom: 28px;
    text-align: justify;
}

.article-content p:first-of-type {
    font-size: 20px;
    line-height: 1.8;
    color: #444;
}

.article-content h2 {
    font-size: 28px;
    margin: 56px 0 20px;
    font-weight: 700;
    color: #101010;
    letter-spacing: -0.01em;
    position: relative;
    padding-left: 20px;
}

.article-content h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background: linear-gradient(135deg, #101010 0%, #666 100%);
    border-radius: 2px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #666;
    text-decoration: none;
    margin-bottom: 40px;
    transition: all 0.2s ease;
    font-size: 15px;
    font-weight: 500;
    padding: 10px 16px;
    border-radius: 8px;
}

.back-link:hover {
    color: #101010;
    background: #f5f5f5;
}

.back-link::before {
    content: '←';
    font-size: 16px;
}

@media (max-width: 768px) {
    .article-container {
        padding: 100px 16px 60px;
    }
    .article-title {
        font-size: 36px;
    }
    .article-content {
        font-size: 16px;
    }
    .article-content p:first-of-type {
        font-size: 18px;
    }
    .article-content h2 {
        font-size: 24px;
    }
}