/* ============================================================
   杭州创企家园 · AI 安全部署及运维专家
   Design System V3 —「纸 · 墨 · 印」
   编辑式排版 / 发丝线 / 宋体标题 / 单点朱砂
   ============================================================ */

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

:root {
    /* 纸墨基调 */
    --paper: #F6F4EE;
    --paper-warm: #EFEBE1;
    --white: #FFFFFF;
    --ink: #16171B;
    --ink-soft: #3A3B40;
    --ink-muted: #74726B;
    --ink-faint: #A39F93;

    /* 朱砂印记（唯一强调色，克制使用） */
    --seal: #B5402A;
    --seal-deep: #96331F;

    /* 线条 */
    --hairline: rgba(22, 23, 27, 0.14);
    --hairline-strong: rgba(22, 23, 27, 0.32);
    --hairline-light: rgba(255, 255, 255, 0.18);

    /* 字体 */
    --font-serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-mono: "IBM Plex Mono", "SF Mono", "JetBrains Mono", Consolas, monospace;

    /* 节奏 */
    --section-pad: 120px;
    --container: 1160px;

    --transition: all 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.75;
    color: var(--ink);
    background-color: var(--paper);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: var(--seal);
    color: var(--paper);
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 32px;
}

img { max-width: 100%; }
a { color: inherit; }

/* ------------------------------------------------------------
   通用排版
   ------------------------------------------------------------ */
.eyebrow {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--ink-muted);
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 28px;
}

.eyebrow::before {
    content: '';
    width: 32px;
    height: 1px;
    background: var(--seal);
    flex-shrink: 0;
}

.section-head {
    margin-bottom: 72px;
}

.section-head h2,
.section-title {
    font-family: var(--font-serif);
    font-size: clamp(30px, 4vw, 44px);
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: 0.01em;
}

.section-title .accent,
.section-head h2 .accent {
    color: var(--seal);
}

.section-head .lead {
    margin-top: 18px;
    max-width: 560px;
    color: var(--ink-muted);
    font-size: 16px;
}

.rule {
    border: none;
    border-top: 1px solid var(--hairline);
}

/* ------------------------------------------------------------
   按钮
   ------------------------------------------------------------ */
.btn,
.hero-btn,
.submit-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 36px;
    background: var(--ink);
    color: var(--paper);
    font-family: var(--font-sans);
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-decoration: none;
    border: 1px solid var(--ink);
    border-radius: 0;
    cursor: pointer;
    transition: var(--transition);
}

.btn::after,
.hero-btn::after {
    content: '→';
    font-family: var(--font-mono);
    transition: var(--transition);
}

.btn:hover,
.hero-btn:hover,
.submit-btn:hover {
    background: var(--seal);
    border-color: var(--seal);
    color: var(--paper);
}

.btn:hover::after,
.hero-btn:hover::after {
    transform: translateX(4px);
}

.btn-ghost {
    background: transparent;
    color: var(--ink);
    border: 1px solid var(--hairline-strong);
}

.btn-ghost:hover {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--paper);
}

.btn-light {
    background: var(--paper);
    border-color: var(--paper);
    color: var(--ink);
}

.btn-light:hover {
    background: var(--seal);
    border-color: var(--seal);
    color: var(--paper);
}

.submit-btn {
    width: 100%;
    justify-content: center;
    font-size: 16px;
}

/* ------------------------------------------------------------
   导航栏
   ------------------------------------------------------------ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(246, 244, 238, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--hairline);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(246, 244, 238, 0.97);
    box-shadow: 0 1px 0 var(--hairline);
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.navbar-logo {
    font-family: var(--font-serif);
    font-size: 21px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-decoration: none;
    color: var(--ink);
    display: flex;
    align-items: center;
    gap: 10px;
}

.navbar-logo::before {
    content: '';
    width: 10px;
    height: 10px;
    background: var(--seal);
    flex-shrink: 0;
}

.navbar-logo span {
    font-weight: 400;
    color: var(--ink-muted);
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 36px;
}

.navbar-menu a {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.04em;
    color: var(--ink-soft);
    text-decoration: none;
    position: relative;
    padding: 6px 0;
    transition: var(--transition);
}

.navbar-menu a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 1px;
    background: var(--seal);
    transition: var(--transition);
}

.navbar-menu a:hover {
    color: var(--ink);
}

.navbar-menu a:hover::after {
    width: 100%;
}

.navbar-menu .nav-cta {
    padding: 9px 20px;
    border: 1px solid var(--ink);
    color: var(--ink);
    transition: var(--transition);
}

.navbar-menu .nav-cta::after { display: none; }

.navbar-menu .nav-cta:hover {
    background: var(--ink);
    color: var(--paper);
}

.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    padding: 6px 2px;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--ink);
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ------------------------------------------------------------
   首页 Hero —— 深墨 + 视频
   ------------------------------------------------------------ */
.hero {
    position: relative;
    min-height: 92vh;
    display: flex;
    align-items: flex-end;
    padding: 200px 0 0;
    background: var(--ink);
    color: var(--paper);
    overflow: hidden;
}

.hero-video-container {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 0;
}

.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    transform: translate(-50%, -50%);
    object-fit: cover;
    opacity: 0.42;
    filter: grayscale(35%) contrast(1.05);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(22, 23, 27, 0.55) 0%, rgba(22, 23, 27, 0.35) 45%, rgba(22, 23, 27, 0.92) 100%);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
    width: 100%;
}

.hero-inner {
    padding-bottom: 88px;
    max-width: 860px;
}

.hero .eyebrow {
    color: rgba(246, 244, 238, 0.62);
}

.hero h1 {
    font-family: var(--font-serif);
    font-size: clamp(38px, 5.6vw, 64px);
    font-weight: 600;
    line-height: 1.28;
    letter-spacing: 0.01em;
    margin-bottom: 30px;
}

.hero h1 .seal-dot {
    color: var(--seal);
}

.hero p {
    font-size: 17px;
    line-height: 2;
    color: rgba(246, 244, 238, 0.72);
    max-width: 640px;
    margin-bottom: 44px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Hero 底部信息栏 */
.hero-meta {
    position: relative;
    z-index: 2;
    border-top: 1px solid var(--hairline-light);
    padding: 22px 0;
    display: flex;
    gap: 48px;
    flex-wrap: wrap;
}

.hero-meta span {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.14em;
    color: rgba(246, 244, 238, 0.55);
}

.hero-meta strong {
    color: var(--paper);
    font-weight: 500;
}

/* ------------------------------------------------------------
   内页页眉
   ------------------------------------------------------------ */
.page-hero {
    padding: 180px 0 88px;
    background: var(--paper);
    border-bottom: 1px solid var(--hairline);
}

.page-hero h1 {
    font-family: var(--font-serif);
    font-size: clamp(36px, 4.6vw, 52px);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 20px;
}

.page-hero p {
    font-size: 17px;
    color: var(--ink-muted);
    max-width: 640px;
}

.page-hero .date-note {
    margin-top: 14px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.1em;
    color: var(--ink-faint);
}

/* ------------------------------------------------------------
   通用区块
   ------------------------------------------------------------ */
.section {
    padding: var(--section-pad) 0;
}

.section-alt {
    background: var(--white);
    border-top: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
}

/* ------------------------------------------------------------
   特性网格（为什么选择我们 / 服务优势 / 团队）
   ------------------------------------------------------------ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--hairline);
    border-left: 1px solid var(--hairline);
}

.features-grid.cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

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

.feature-card {
    padding: 44px 36px 40px;
    border-right: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    background: transparent;
    transition: var(--transition);
    position: relative;
}

.feature-card:hover {
    background: var(--white);
}

.feature-card .card-index {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.14em;
    color: var(--ink-faint);
    display: block;
    margin-bottom: 26px;
    transition: var(--transition);
}

.feature-card:hover .card-index {
    color: var(--seal);
}

.feature-icon {
    margin-bottom: 22px;
    color: var(--ink);
    line-height: 0;
}

.feature-icon svg {
    stroke: currentColor;
}

.feature-card h3 {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: 0.01em;
}

.feature-card p {
    color: var(--ink-muted);
    font-size: 14.5px;
    line-height: 1.8;
}

/* ------------------------------------------------------------
   服务体系列表（首页 / 服务总览）
   ------------------------------------------------------------ */
.service-list {
    border-top: 1px solid var(--hairline-strong);
}

.service-row {
    display: grid;
    grid-template-columns: 72px 1fr 2fr 48px;
    align-items: center;
    gap: 28px;
    padding: 34px 8px;
    border-bottom: 1px solid var(--hairline);
    text-decoration: none;
    color: var(--ink);
    transition: var(--transition);
    position: relative;
}

.service-row:hover {
    background: var(--white);
    padding-left: 24px;
    padding-right: 24px;
}

.service-row .row-index {
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: 0.1em;
    color: var(--ink-faint);
    transition: var(--transition);
}

.service-row:hover .row-index {
    color: var(--seal);
}

.service-row h3 {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    letter-spacing: 0.01em;
}

.service-row p {
    font-size: 14.5px;
    color: var(--ink-muted);
    line-height: 1.8;
}

.service-row .row-arrow {
    font-family: var(--font-mono);
    font-size: 18px;
    color: var(--ink-faint);
    text-align: right;
    transition: var(--transition);
}

.service-row:hover .row-arrow {
    color: var(--seal);
    transform: translateX(6px);
}

/* 服务总览卡片网格 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--hairline);
    border-left: 1px solid var(--hairline);
}

.service-item {
    display: block;
    padding: 44px 36px 40px;
    border-right: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    text-decoration: none;
    color: var(--ink);
    background: transparent;
    transition: var(--transition);
}

.service-item:hover {
    background: var(--white);
}

.service-item .card-index {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.14em;
    color: var(--ink-faint);
    display: block;
    margin-bottom: 24px;
    transition: var(--transition);
}

.service-item:hover .card-index {
    color: var(--seal);
}

.service-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ink);
    margin-bottom: 22px;
}

.service-item h3 {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.service-item p {
    color: var(--ink-muted);
    font-size: 14px;
    line-height: 1.9;
}

.service-item .item-more {
    display: inline-block;
    margin-top: 22px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.12em;
    color: var(--ink-faint);
    transition: var(--transition);
}

.service-item:hover .item-more {
    color: var(--seal);
}

/* ------------------------------------------------------------
   服务详情条目（发丝线分隔列表）
   ------------------------------------------------------------ */
.detail-list {
    max-width: 880px;
    margin: 0 auto;
    border-top: 1px solid var(--hairline-strong);
}

.detail-item {
    display: grid;
    grid-template-columns: 64px 1fr;
    gap: 28px;
    padding: 40px 0;
    border-bottom: 1px solid var(--hairline);
}

.detail-item .item-index {
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: 0.1em;
    color: var(--ink-faint);
    padding-top: 6px;
}

.detail-item h3 {
    font-family: var(--font-serif);
    font-size: 23px;
    font-weight: 600;
    margin-bottom: 14px;
}

.detail-item p {
    color: var(--ink-soft);
    line-height: 1.9;
    margin-bottom: 10px;
}

.detail-item .note {
    margin-top: 14px;
    padding: 14px 18px;
    background: var(--paper-warm);
    border-left: 2px solid var(--seal);
    font-size: 14px;
    color: var(--ink-soft);
}

.detail-item .note strong {
    color: var(--seal);
    font-weight: 600;
}

.detail-item ul {
    margin: 12px 0 12px 22px;
}

.detail-item li {
    color: var(--ink-soft);
    line-height: 1.9;
    margin-bottom: 6px;
}

.detail-cta {
    max-width: 880px;
    margin: 56px auto 0;
    text-align: center;
}

/* ------------------------------------------------------------
   服务流程
   ------------------------------------------------------------ */
.process-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    border-top: 1px solid var(--hairline);
    border-left: 1px solid var(--hairline);
}

.process-step {
    padding: 36px 28px;
    border-right: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    transition: var(--transition);
}

.process-step:hover {
    background: var(--white);
}

.process-step .step-num {
    font-family: var(--font-serif);
    font-size: 34px;
    font-weight: 600;
    color: var(--seal);
    display: block;
    margin-bottom: 18px;
}

.process-step h3 {
    font-family: var(--font-serif);
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 10px;
}

.process-step p {
    font-size: 13.5px;
    color: var(--ink-muted);
    line-height: 1.8;
}

/* ------------------------------------------------------------
   关于区块（首页）
   ------------------------------------------------------------ */
.about-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 88px;
    align-items: start;
}

.about-text h2 {
    font-family: var(--font-serif);
    font-size: clamp(28px, 3.4vw, 40px);
    font-weight: 600;
    line-height: 1.35;
    margin-bottom: 28px;
}

.about-text h2 .accent { color: var(--seal); }

.about-text p {
    color: var(--ink-soft);
    margin-bottom: 18px;
    line-height: 1.95;
}

.about-text ul {
    margin: 28px 0;
    border-top: 1px solid var(--hairline);
}

.about-text li {
    list-style: none;
    padding: 14px 0;
    border-bottom: 1px solid var(--hairline);
    color: var(--ink-soft);
    font-size: 15px;
}

.about-text li strong {
    color: var(--ink);
    font-weight: 600;
    margin-right: 6px;
}

.about-aside {
    border: 1px solid var(--hairline-strong);
    padding: 48px 44px;
    background: var(--white);
    position: relative;
}

.about-aside::before {
    content: '';
    position: absolute;
    top: 10px;
    right: 10px;
    width: 44px;
    height: 44px;
    border: 1px solid var(--seal);
    opacity: 0.5;
    pointer-events: none;
}

.about-aside .aside-quote {
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 600;
    line-height: 1.7;
    margin-bottom: 28px;
}

.about-aside .aside-quote .accent { color: var(--seal); }

.about-aside p {
    color: var(--ink-muted);
    font-size: 14.5px;
    line-height: 1.9;
}

/* ------------------------------------------------------------
   联系区块
   ------------------------------------------------------------ */
.contact-container {
    display: grid;
    grid-template-columns: 5fr 6fr;
    border: 1px solid var(--hairline-strong);
    background: var(--white);
}

.contact-info {
    padding: 64px 56px;
    background: var(--ink);
    color: var(--paper);
}

.contact-info h2 {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 18px;
}

.contact-info > p {
    color: rgba(246, 244, 238, 0.66);
    line-height: 1.9;
    margin-bottom: 40px;
    font-size: 15px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
    border-top: 1px solid var(--hairline-light);
    color: rgba(246, 244, 238, 0.85);
    font-size: 15px;
}

.contact-item i {
    font-style: normal;
    width: 28px;
    text-align: center;
}

.contact-item i.ci-tag {
    width: auto;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.14em;
    color: rgba(246, 244, 238, 0.75);
    border: 1px solid rgba(246, 244, 238, 0.3);
    padding: 4px 7px 3px;
}

.footer .f-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.14em;
    color: rgba(246, 244, 238, 0.5);
    border: 1px solid rgba(246, 244, 238, 0.22);
    padding: 3px 6px 2px;
    margin-right: 10px;
    vertical-align: 1px;
}

.qr-cards {
    display: grid;
    gap: 20px;
    margin-top: 8px;
}

.qr-card {
    display: flex;
    align-items: center;
    gap: 22px;
    padding: 20px;
    border: 1px solid var(--hairline-light);
}

.qr-card img {
    width: 96px;
    height: 96px;
    background: #fff;
    padding: 8px;
    flex-shrink: 0;
}

.qr-card .qr-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--paper);
    margin-bottom: 6px;
}

.qr-card .qr-desc {
    font-size: 12.5px;
    color: rgba(246, 244, 238, 0.55);
}

.contact-form {
    padding: 64px 56px;
}

.contact-form h2 {
    font-family: var(--font-serif);
    font-size: 26px;
    font-weight: 600;
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 22px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.08em;
    color: var(--ink-muted);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 0;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--hairline-strong);
    border-radius: 0;
    font-family: var(--font-sans);
    font-size: 15px;
    color: var(--ink);
    transition: var(--transition);
    appearance: none;
    -webkit-appearance: none;
}

.form-group select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2374726B' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 4px center;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-bottom-color: var(--seal);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--ink-faint);
}

.form-group textarea {
    height: 120px;
    resize: vertical;
}

.form-message-success,
.form-message-error {
    padding: 14px 18px;
    margin-bottom: 22px;
    font-size: 14px;
    border-left: 2px solid;
}

.form-message-success {
    background: #EDF3EA;
    border-color: #3E6B3A;
    color: #2F5530;
}

.form-message-error {
    background: #F6E9E5;
    border-color: var(--seal);
    color: var(--seal-deep);
}

/* ------------------------------------------------------------
   文章页 / 内容页
   ------------------------------------------------------------ */
.article-wrap {
    max-width: 780px;
    margin: 0 auto;
    padding: 96px 0 120px;
}

.article-back {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.14em;
    color: var(--ink-muted);
    text-decoration: none;
    margin-bottom: 40px;
    transition: var(--transition);
}

.article-back:hover {
    color: var(--seal);
}

.article-wrap h1 {
    font-family: var(--font-serif);
    font-size: clamp(28px, 3.6vw, 40px);
    font-weight: 600;
    line-height: 1.45;
    margin-bottom: 22px;
}

.article-meta {
    font-family: var(--font-mono);
    font-size: 12.5px;
    letter-spacing: 0.08em;
    color: var(--ink-faint);
    padding-bottom: 32px;
    margin-bottom: 44px;
    border-bottom: 1px solid var(--hairline-strong);
}

.article-body {
    font-size: 16px;
    line-height: 2;
    color: var(--ink-soft);
}

.article-body p {
    margin-bottom: 22px;
}

.article-body h2 {
    font-family: var(--font-serif);
    font-size: 23px;
    font-weight: 600;
    color: var(--ink);
    margin: 48px 0 18px;
    padding-left: 16px;
    border-left: 3px solid var(--seal);
    line-height: 1.5;
}

.article-body h3 {
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin: 32px 0 14px;
}

.article-body ul,
.article-body ol {
    margin: 0 0 22px 24px;
}

.article-body li {
    margin-bottom: 10px;
    line-height: 1.9;
}

.article-body strong {
    color: var(--ink);
    font-weight: 600;
}

.article-body a {
    color: var(--seal);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0 28px;
    font-size: 14.5px;
}

.article-body th,
.article-body td {
    border: 1px solid var(--hairline);
    padding: 12px 16px;
    text-align: left;
    line-height: 1.7;
}

.article-body th {
    background: var(--paper-warm);
    font-weight: 600;
    color: var(--ink);
}

.article-body .callout {
    background: var(--paper-warm);
    border-left: 2px solid var(--seal);
    padding: 20px 24px;
    margin: 32px 0;
}

.article-body .callout p:last-child {
    margin-bottom: 0;
}

.article-related {
    margin-top: 64px;
    padding-top: 36px;
    border-top: 1px solid var(--hairline-strong);
}

.article-related .related-label {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.16em;
    color: var(--ink-muted);
    display: block;
    margin-bottom: 20px;
}

.article-related .related-links {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.article-related a {
    padding: 10px 22px;
    border: 1px solid var(--hairline-strong);
    font-size: 14px;
    text-decoration: none;
    color: var(--ink);
    transition: var(--transition);
}

.article-related a:hover {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--paper);
}

/* 内容页（隐私 / 条款） */
.content-page {
    font-size: 16px;
    line-height: 2;
    color: var(--ink-soft);
}

.content-page h2 {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--ink);
    margin: 44px 0 16px;
}

.content-page p { margin-bottom: 18px; }

.content-page ul {
    margin: 0 0 20px 24px;
}

.content-page li {
    margin-bottom: 10px;
    line-height: 1.9;
}

.content-page strong { color: var(--ink); }

.content-page a {
    color: var(--seal);
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* ------------------------------------------------------------
   资讯列表
   ------------------------------------------------------------ */
.news-list {
    border-top: 1px solid var(--hairline-strong);
}

.news-row {
    display: grid;
    grid-template-columns: 130px 1fr 48px;
    gap: 32px;
    align-items: baseline;
    padding: 36px 8px;
    border-bottom: 1px solid var(--hairline);
    text-decoration: none;
    color: var(--ink);
    transition: var(--transition);
}

.news-row:hover {
    background: var(--white);
    padding-left: 24px;
    padding-right: 24px;
}

.news-row .news-date {
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: 0.08em;
    color: var(--ink-faint);
}

.news-row h3 {
    font-family: var(--font-serif);
    font-size: 21px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 10px;
    transition: var(--transition);
}

.news-row:hover h3 {
    color: var(--seal);
}

.news-row p {
    font-size: 14.5px;
    color: var(--ink-muted);
    line-height: 1.8;
}

.news-row .row-arrow {
    font-family: var(--font-mono);
    font-size: 18px;
    color: var(--ink-faint);
    text-align: right;
    transition: var(--transition);
}

.news-row:hover .row-arrow {
    color: var(--seal);
    transform: translateX(6px);
}

/* ------------------------------------------------------------
   视频区块（关于我们）
   ------------------------------------------------------------ */
.video-frame {
    position: relative;
    border: 1px solid var(--hairline-strong);
    padding: 12px;
    background: var(--white);
}

.video-frame video {
    width: 100%;
    height: auto;
    display: block;
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 88px;
    height: 88px;
    background: var(--paper);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
}

.video-play-btn:hover {
    background: var(--seal);
}

.video-play-btn svg {
    margin-left: 5px;
}

.video-play-btn:hover svg path {
    fill: var(--paper);
}

/* ------------------------------------------------------------
   页脚
   ------------------------------------------------------------ */
.footer {
    background: var(--ink);
    color: var(--paper);
    padding: 88px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
    gap: 56px;
    padding-bottom: 64px;
}

.footer h3 {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ink-faint);
    margin-bottom: 24px;
}

.footer .footer-brand {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--paper);
    display: block;
    margin-bottom: 18px;
}

.footer p {
    color: rgba(246, 244, 238, 0.55);
    font-size: 14px;
    line-height: 1.9;
    margin-bottom: 10px;
}

.footer-links a {
    display: block;
    color: rgba(246, 244, 238, 0.68);
    text-decoration: none;
    font-size: 14px;
    margin-bottom: 12px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--paper);
    padding-left: 6px;
}

.footer-links-inline a {
    color: rgba(246, 244, 238, 0.55);
    text-decoration: none;
    font-size: 13px;
    transition: var(--transition);
}

.footer-links-inline a:hover {
    color: var(--paper);
}

.footer-divider-inline {
    color: rgba(246, 244, 238, 0.3);
    margin: 0 10px;
}

.footer-bottom {
    border-top: 1px solid var(--hairline-light);
    padding-top: 32px;
    display: flex;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-bottom p {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.08em;
    color: rgba(246, 244, 238, 0.4);
    margin: 0;
}

/* ------------------------------------------------------------
   滚动显现
   ------------------------------------------------------------ */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.in {
    opacity: 1;
    transform: translateY(0);
}

/* ------------------------------------------------------------
   滚动条
   ------------------------------------------------------------ */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--paper); }
::-webkit-scrollbar-thumb { background: #C9C4B6; }
::-webkit-scrollbar-thumb:hover { background: var(--seal); }

/* ------------------------------------------------------------
   响应式
   ------------------------------------------------------------ */
@media (max-width: 1024px) {
    .features-grid,
    .features-grid.cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .process-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .about-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 44px;
    }
}

@media (max-width: 768px) {
    :root { --section-pad: 80px; }

    .container { padding: 0 22px; }

    .hamburger { display: flex; }

    .navbar-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(246, 244, 238, 0.99);
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
        padding: 24px 22px 32px;
        border-bottom: 1px solid var(--hairline);
        transform: translateY(-130%);
        transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
        z-index: 999;
    }

    .navbar-menu.active {
        transform: translateY(0);
    }

    .navbar-menu a {
        font-size: 17px;
        padding: 12px 0;
        width: 100%;
        border-bottom: 1px solid var(--hairline);
    }

    .navbar-menu .nav-cta {
        border: 1px solid var(--ink);
        text-align: center;
        margin-top: 16px;
        padding: 14px 20px;
    }

    .hero {
        min-height: 88vh;
        padding-top: 140px;
    }

    .hero-inner { padding-bottom: 56px; }

    .hero-meta { gap: 20px 32px; }

    .features-grid,
    .features-grid.cols-4,
    .features-grid.cols-2,
    .services-grid,
    .process-grid {
        grid-template-columns: 1fr;
    }

    .service-row {
        grid-template-columns: 1fr 32px;
        gap: 8px 16px;
        padding: 28px 4px;
    }

    .service-row .row-index { display: none; }

    .service-row p { grid-column: 1 / -1; }

    .detail-item {
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 32px 0;
    }

    .news-row {
        grid-template-columns: 1fr 32px;
        gap: 6px 16px;
        padding: 28px 4px;
    }

    .news-row p { grid-column: 1 / -1; }

    .contact-container {
        grid-template-columns: 1fr;
    }

    .contact-info,
    .contact-form {
        padding: 44px 28px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}