/* ==========================================================================
   杭州创企家园 · AI 安全部署及运维专家
   视觉语言：石墨铭牌 / 纸白底 / 黄铜信号 / 发丝线 / 取景框
   —— 以「精密仪器」取代霓虹渐变玻璃质感：克制、清醒、可信。
   ========================================================================== */

/* --------------------------------------------------------------------------
   01 · 设计令牌
   -------------------------------------------------------------------------- */
:root {
    /* 面 */
    --paper:      #F2F2EF;
    --paper-2:    #E9E9E4;
    --card:       #FBFBF9;
    --ink:        #15181A;
    --ink-2:      #1C2023;
    --ink-3:      #242A2D;

    /* 线 */
    --rule:       #D6D7D1;
    --rule-2:     #C3C5BE;
    --rule-ink:   rgba(242, 242, 239, 0.14);
    --rule-ink-2: rgba(242, 242, 239, 0.26);

    /* 字 */
    --text:       #1B1F21;
    --text-2:     #4E5450;
    --text-3:     #757B76;
    --on-ink:     #EFEFEB;
    --on-ink-2:   rgba(239, 239, 235, 0.70);
    --on-ink-3:   rgba(239, 239, 235, 0.48);

    /* 信号（黄铜） */
    --brass:      #A2762C;
    --brass-ink:  #7C5511;
    --brass-lt:   #C89C4A;
    --brass-wash: rgba(162, 118, 44, 0.055);
    --pine:       #1C3A33;

    /* 字族 */
    --sans: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC",
            "Noto Sans CJK SC", "Microsoft YaHei", "Hiragino Sans GB",
            system-ui, -apple-system, "Segoe UI", sans-serif;
    --mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono",
            "Consolas", "Menlo", monospace;

    /* 尺度 */
    --wrap:     1200px;
    --gutter:   24px;
    --header-h: 66px;
    --r:        2px;
    --ease:     cubic-bezier(0.22, 0.61, 0.36, 1);

    /* —— 旧变量别名：保证任何残留内联样式也落到新色板上 —— */
    --bg-primary: var(--paper);
    --bg-secondary: var(--paper);
    --bg-card: transparent;
    --bg-glass: transparent;
    --glass-bg: transparent;
    --glass-border: var(--rule);
    --glass-blur: none;
    --border-color: var(--rule);
    --border-glow: var(--rule-2);
    --text-primary: var(--text);
    --text-secondary: var(--text-2);
    --text-muted: var(--text-3);
    --text-dark: var(--text);
    --text-light: var(--text-3);
    --white: #ffffff;
    --primary-color: var(--brass-ink);
    --secondary-color: var(--ink);
    --neon-primary: var(--brass-ink);
    --neon-cyan: var(--brass-ink);
    --neon-green: var(--brass-ink);
    --neon-purple: var(--brass-ink);
    --neon-pink: var(--brass-ink);
    --neon-blue: var(--brass-ink);
    --gradient-text: var(--brass-ink);
    --gradient-primary: none;
    --gradient-card: none;
    --shadow: none;
    --shadow-lg: none;
    --shadow-neon: none;
    --shadow-neon-purple: none;
    --transition: 0.25s var(--ease);
    --transition-fast: 0.16s var(--ease);
    --transition-slow: 0.45s var(--ease);
}

/* 深色语境中的旧变量再映射 */
.contact-info,
.section--ink,
.footer,
.panel--ink {
    --text-primary: var(--on-ink);
    --text-secondary: var(--on-ink-2);
    --text-muted: var(--on-ink-3);
    --text-dark: var(--on-ink);
    --text-light: var(--on-ink-3);
    --border-color: var(--rule-ink);
    --primary-color: var(--brass-lt);
    --brass-ink: var(--brass-lt);
}

/* --------------------------------------------------------------------------
   02 · 重置与基础
   -------------------------------------------------------------------------- */
*,
*::before,
*::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.8;
    color: var(--text);
    background-color: var(--paper);
    padding-top: var(--header-h);
    overflow-x: clip;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

img,
video { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

button,
input,
select,
textarea { font: inherit; color: inherit; }

button { background: none; border: 0; cursor: pointer; }

ul,
ol { list-style: none; }

strong { font-weight: 600; color: var(--text); }

/* 标题基线：原内联字号被移除后由这里统一接管 */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-size: inherit;
    font-weight: 600;
    line-height: 1.5;
    letter-spacing: 0.01em;
    color: var(--text);
}
h1,
h2 { font-weight: 500; }
h3 { font-size: 16.5px; }
h4 { font-size: 15px; }
p { margin: 0; }

::selection { background: rgba(162, 118, 44, 0.22); }

:focus-visible {
    outline: 2px solid var(--brass-ink);
    outline-offset: 3px;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 200;
    padding: 12px 20px;
    background: var(--ink);
    color: var(--on-ink);
    font-size: 13px;
}
.skip-link:focus { left: 0; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--paper-2); }
::-webkit-scrollbar-thumb {
    background: #BEC0BA;
    border: 3px solid var(--paper-2);
    border-radius: 6px;
}
::-webkit-scrollbar-thumb:hover { background: var(--brass); }

/* --------------------------------------------------------------------------
   03 · 版式骨架
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.section { padding: 88px 0; }
.section--tight { padding: 64px 0; }
.section--flush-top { padding-top: 0; }

.section--ink {
    background: var(--ink);
    color: var(--on-ink);
    border-top: 1px solid var(--ink);
    border-bottom: 1px solid var(--ink);
}
.section--ink .sec-title,
.section--ink h2,
.section--ink h3 { color: var(--on-ink); }
.section--ink p { color: var(--on-ink-2); }

.narrow { max-width: 900px; margin-left: auto; margin-right: auto; }
.narrow--sm { max-width: 760px; }
.center { text-align: center; }
.hairline-top { border-top: 1px solid var(--rule); }
.mb-2xl { margin-bottom: 56px; }

/* 章节标题 */
.sec-title {
    font-size: clamp(23px, 2.5vw, 31px);
    font-weight: 500;
    line-height: 1.35;
    letter-spacing: 0.01em;
    color: var(--text);
    text-align: center;
    margin-bottom: 52px;
}
.sec-title .hl { color: var(--brass-ink); }
.hl { color: var(--brass-ink); }
.section--ink .hl { color: var(--brass-lt); }

.eyebrow {
    font-size: 11.5px;
    font-weight: 500;
    letter-spacing: 0.22em;
    color: var(--brass-ink);
    margin-bottom: 14px;
}

.lead {
    font-size: 16.5px;
    line-height: 2;
    color: var(--text-2);
    text-align: center;
    max-width: 760px;
    margin: 0 auto;
}

/* --------------------------------------------------------------------------
   04 · 顶部导航
   -------------------------------------------------------------------------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-h);
    z-index: 1000;
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
    transition: background 0.3s var(--ease), height 0.3s var(--ease);
}

.navbar::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 1px;
    background: var(--brass);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s var(--ease);
}
.navbar.scrolled { background: var(--card); height: 60px; }
.navbar.scrolled::after { transform: scaleX(1); }

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.navbar-logo {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    font-size: 17px;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--text);
    white-space: nowrap;
}
.navbar-logo::before {
    content: "";
    width: 9px;
    height: 9px;
    background: transparent;
    border: 1.5px solid var(--brass);
    transition: background 0.25s var(--ease);
}
.navbar-logo:hover::before { background: var(--brass); }
.navbar-logo span { font-weight: 600; }

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 34px;
}

.navbar-menu a {
    position: relative;
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 0.06em;
    color: var(--text-2);
    padding: 6px 0;
    transition: color 0.22s var(--ease);
}
.navbar-menu a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 1px;
    background: var(--brass);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.28s var(--ease);
}
.navbar-menu a:hover { color: var(--text); }
.navbar-menu a:hover::after,
.navbar-menu a[aria-current="page"]::after { transform: scaleX(1); }
.navbar-menu a[aria-current="page"] { color: var(--text); }

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 34px;
    height: 34px;
    margin-right: -8px;
}
.hamburger span {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--text);
    transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
    transform-origin: center;
}
.hamburger.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   05 · 首屏（首页）
   -------------------------------------------------------------------------- */
.hero {
    position: relative;
    padding: 92px 0 88px;
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
}
.hero .container {
    display: grid;
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
    gap: 64px;
    align-items: center;
}

.hero h1 {
    font-size: clamp(29px, 3.9vw, 47px);
    font-weight: 500;
    line-height: 1.24;
    letter-spacing: 0.005em;
    color: var(--text);
    margin-bottom: 26px;
}

.hero p {
    font-size: 16px;
    line-height: 2;
    color: var(--text-2);
    max-width: 34em;
    margin-bottom: 38px;
}

.hero-copy { position: relative; }

.hero-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 15px 34px;
    background: var(--ink);
    color: var(--on-ink);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.1em;
    border-radius: var(--r);
    border: 1px solid var(--ink);
    transition: background 0.25s var(--ease), border-color 0.25s var(--ease),
                color 0.25s var(--ease);
}
.hero-btn::after {
    content: "";
    width: 14px;
    height: 1px;
    background: currentColor;
    transition: width 0.28s var(--ease);
}
.hero-btn:hover {
    background: var(--brass-ink);
    border-color: var(--brass-ink);
    color: #fff;
}
.hero-btn:hover::after { width: 22px; }

.center-cta { margin-top: 44px; text-align: center; }

/* 取景框 + 监控视窗 */
.hero-visual { position: relative; }

.viewfinder {
    position: relative;
    padding: 9px;
    background: var(--card);
    border: 1px solid var(--rule);
    border-radius: var(--r);
}
.viewfinder--plain { background: transparent; }

.hero-video-container {
    position: relative;
    overflow: hidden;
    background: var(--ink);
    aspect-ratio: 4 / 3;
    border-radius: 1px;
}
.hero-video,
.viewfinder video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(0.72) contrast(1.06) brightness(0.94);
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(21, 24, 26, 0.32) 0%,
        rgba(21, 24, 26, 0.14) 55%,
        rgba(21, 24, 26, 0.42) 100%
    );
    pointer-events: none;
}

.vf-tick {
    position: absolute;
    width: 15px;
    height: 15px;
    border: 0 solid var(--brass);
    pointer-events: none;
    z-index: 3;
}
.vf-tick--tl { top: 0; left: 0; border-top-width: 2px; border-left-width: 2px; }
.vf-tick--tr { top: 0; right: 0; border-top-width: 2px; border-right-width: 2px; }
.vf-tick--bl { bottom: 0; left: 0; border-bottom-width: 2px; border-left-width: 2px; }
.vf-tick--br { bottom: 0; right: 0; border-bottom-width: 2px; border-right-width: 2px; }

/* --------------------------------------------------------------------------
   06 · 内页页头
   -------------------------------------------------------------------------- */
.page-hero {
    padding: 66px 0 40px;
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
}
.page-hero h1 {
    font-size: clamp(25px, 3.3vw, 37px);
    font-weight: 500;
    line-height: 1.3;
    letter-spacing: 0.01em;
    color: var(--text);
}
.page-hero p {
    margin-top: 12px;
    font-size: 15px;
    color: var(--text-2);
    max-width: 46em;
}
.page-meta {
    margin-top: 14px !important;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.1em;
    color: var(--text-3);
}
.page-hero--doc { padding: 60px 0 34px; }

/* --------------------------------------------------------------------------
   07 · 规格网格（服务特色 / 优势）
   -------------------------------------------------------------------------- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--rule);
    border-left: 1px solid var(--rule);
}
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.cols-5 { grid-template-columns: repeat(5, 1fr); }

.feature-card {
    position: relative;
    padding: 32px 28px 34px;
    border-right: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    background: transparent;
    text-align: left;
    transition: background 0.25s var(--ease);
}
.feature-card:hover { background: var(--brass-wash); }
.feature-card::before { content: none; }

/* 图标统一压成 20px 黄铜线条 */
.feature-icon {
    display: block;
    margin-bottom: 20px;
    color: var(--brass-ink);
    filter: none !important;
}
.feature-icon svg,
.big-icon svg,
.center-icon svg { width: 20px; height: 20px; display: block; }
.feature-icon svg *,
.big-icon svg *,
.center-icon svg *,
.service-icon svg * {
    stroke: currentColor;
    stroke-width: 1.5;
}

.feature-card h3 {
    font-size: 16.5px;
    font-weight: 600;
    letter-spacing: 0.015em;
    color: var(--text);
    margin-bottom: 10px;
}
.feature-card p {
    font-size: 13.5px;
    line-height: 1.85;
    color: var(--text-3);
}

/* 深色区中的规格网格 */
.section--ink .features-grid { border-color: var(--rule-ink); }
.section--ink .feature-card { border-color: var(--rule-ink); }
.section--ink .feature-card:hover { background: rgba(242, 242, 239, 0.05); }
.section--ink .feature-icon { color: var(--brass-lt); }
.section--ink .feature-card h3 { color: var(--on-ink); }
.section--ink .feature-card p { color: var(--on-ink-2); }

/* --------------------------------------------------------------------------
   08 · 服务体系索引（首页 / 服务项目页）
   -------------------------------------------------------------------------- */
.services-section { padding: 88px 0; }

.services-grid { border-top: 1px solid var(--rule); }

.service-item {
    position: relative;
    display: block;
    border-bottom: 1px solid var(--rule);
    transition: background 0.28s var(--ease);
}
.service-item > a {
    display: grid;
    grid-template-columns: minmax(200px, 300px) 1fr;
    align-items: baseline;
    gap: 40px;
    padding: 30px 44px 30px 8px;
    transition: padding-left 0.3s var(--ease);
}
.services-grid > div.service-item { padding: 0; }

.service-item h3 {
    font-size: 21px;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--text);
    margin-bottom: 8px;
    background: none;
    -webkit-text-fill-color: currentColor;
    transition: color 0.25s var(--ease);
}
.service-item p {
    font-size: 13.5px;
    line-height: 1.9;
    color: var(--text-3);
    transition: color 0.25s var(--ease);
}
.services-grid > div.service-item h3 {
    background: none;
    -webkit-text-fill-color: currentColor;
}
.service-item .service-card { background: transparent; }
.service-item .service-card h3 { font-size: 19px; }
.service-item .service-card p { font-size: 13.5px; }

/* 行尾黄铜箭头 */
.service-item::after {
    content: "";
    position: absolute;
    right: 8px;
    top: 50%;
    width: 22px;
    height: 1px;
    background: var(--brass);
    transform: translateY(-50%) scaleX(0);
    transform-origin: right;
    transition: transform 0.3s var(--ease);
}
.service-item:hover::after { transform: translateY(-50%) scaleX(1); }
.service-item::before { content: none; }

.service-item:hover { background: var(--ink); }
.service-item:hover > a { padding-left: 24px; }
.service-item:hover h3 { color: var(--on-ink); }
.service-item:hover p { color: var(--on-ink-2); }
.service-item:hover::after { background: var(--brass-lt); }

/* 深色区中的索引：反相为纸色 */
.section--ink .services-grid { border-color: var(--rule-ink); }
.section--ink .service-item { border-color: var(--rule-ink); }
.section--ink .service-item h3 { color: var(--on-ink); }
.section--ink .service-item p { color: var(--on-ink-2); }
.section--ink .service-item:hover { background: var(--paper); }
.section--ink .service-item:hover h3 { color: var(--text); }
.section--ink .service-item:hover p { color: var(--text-2); }
.section--ink .service-item:hover::after { background: var(--brass); }

/* 带图标的索引（服务项目页）：此处 .service-item 本身就是 <a>，
   与首页「外层 div + 内层 a」的写法不同，需分别定位。 */
.service-icon-wrap { display: none; }
.service-item.has-icon {
    display: grid;
    grid-template-columns: auto minmax(180px, 260px) 1fr;
    align-items: baseline;
    gap: 28px;
    padding: 30px 44px 30px 8px;
    transition: padding-left 0.3s var(--ease), background 0.28s var(--ease);
}
.service-item.has-icon:hover { padding-left: 24px; }
.service-item.has-icon .service-icon-wrap {
    display: block;
    align-self: start;
    margin-top: 2px;
}
/* 图标 / 标题 / 明细 三栏对齐 */
.service-item.has-icon .service-content { display: contents; }
.service-icon {
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--rule-2);
    border-radius: var(--r);
    background: transparent !important;
    color: var(--brass-ink);
    transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}
.service-icon svg { width: 17px; height: 17px; }
.service-item:hover .service-icon {
    border-color: var(--brass-lt);
    color: var(--brass-lt);
    transform: none;
    box-shadow: none;
}
.service-content { display: block; }
.service-content h3 {
    background: none;
    -webkit-text-fill-color: currentColor;
}
.service-content p { max-width: 62ch; }
.section--ink .service-icon { border-color: var(--rule-ink-2); }

/* --------------------------------------------------------------------------
   09 · 面板 / 服务内容块
   -------------------------------------------------------------------------- */
.panel {
    background: var(--card);
    border: 1px solid var(--rule);
    border-radius: var(--r);
    padding: 38px 42px;
}
.panel + .panel { margin-top: 24px; }

.panel-title {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--text);
    padding-bottom: 18px;
    margin-bottom: 6px;
    border-bottom: 1px solid var(--rule);
    background: none;
    -webkit-text-fill-color: currentColor;
}
.panel-title--center { text-align: center; }

.svc-block {
    padding: 26px 0 28px;
    border-bottom: 1px solid var(--rule);
}
.svc-block:last-child { border-bottom: 0; padding-bottom: 4px; }
.svc-block h3 {
    font-size: 17px;
    font-weight: 600;
    letter-spacing: 0.015em;
    color: var(--text);
    margin-bottom: 12px;
}
.svc-block p {
    font-size: 14.5px;
    line-height: 1.95;
    color: var(--text-2);
}

/* 备注：黄铜细线标注 */
.note {
    position: relative;
    margin-top: 16px;
    padding-left: 15px;
    border-left: 2px solid var(--brass);
    font-size: 13px !important;
    line-height: 1.9;
    color: var(--brass-ink) !important;
}
.note strong { color: inherit; font-weight: 600; }

/* 面板内的子标题：以发丝线切分子章节。
   直系 h3 / 用裸 div 分组的 h3 两种写法都要覆盖；
   .svc-block 自带完整的分节样式，必须排除，否则会叠加出双线。 */
.panel > h3,
.panel > div:not(.svc-block) > h3 {
    margin: 34px 0 12px;
    padding-top: 26px;
    border-top: 1px solid var(--rule);
    font-size: 16.5px;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--text);
}
.panel > h3 + p { margin-bottom: 18px; }
.panel > div:not(.svc-block) > h3 + p { margin-bottom: 18px; }
/* 紧跟面板标题的第一个子章节不再重复画线，避免双线 */
.panel > h3:first-of-type { margin-top: 26px; }
.panel > div:not(.svc-block):first-of-type > h3 {
    margin-top: 28px;
    padding-top: 0;
    border-top: 0;
}

/* --------------------------------------------------------------------------
   10 · 6 层防护 / 层级卡片
   -------------------------------------------------------------------------- */
.grid-3x2 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-left: 1px solid var(--rule);
}
.layer-card {
    padding: 30px 28px 32px;
    border-top: 1px solid var(--rule);
    border-right: 1px solid var(--rule);
    text-align: left;
    background: transparent !important;
    transition: background 0.25s var(--ease);
}
.layer-card:hover { background: var(--brass-wash) !important; }
.layer-card h3 {
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.015em;
    color: var(--text);
    margin: 18px 0 9px;
}
.layer-card p { font-size: 13.5px; line-height: 1.85; color: var(--text-3); }
.big-icon { color: var(--brass-ink); }
.big-icon svg { width: 20px; height: 20px; }

/* --------------------------------------------------------------------------
   11 · 流程（真实序列 → 编号时间轴）
   -------------------------------------------------------------------------- */
.flow {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    border-top: 1px solid var(--rule);
    border-left: 1px solid var(--rule);
}
.step {
    padding: 26px 22px 30px;
    border-right: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    text-align: left;
    background: transparent !important;
}
.step-num {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.16em;
    color: var(--brass-ink);
    padding-bottom: 8px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--brass);
    display: inline-block;
    min-width: 32px;
    text-align: center;
    background: none;
    -webkit-text-fill-color: currentColor;
}
.step h3 {
    font-size: 15.5px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}
.step p { font-size: 13px; line-height: 1.85; color: var(--text-3); }

/* --------------------------------------------------------------------------
   12 · 模型中转：功能卡 / 技术特性 / 适用场景
   -------------------------------------------------------------------------- */
.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-left: 1px solid var(--rule);
}
.mm-card {
    padding: 30px 26px 32px;
    border-top: 1px solid var(--rule);
    border-right: 1px solid var(--rule);
    text-align: left;
    background: transparent !important;
    transition: background 0.25s var(--ease);
}
.mm-card:hover { background: var(--brass-wash) !important; }
.mm-card h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 10px;
}
.mm-card p { font-size: 13.5px; line-height: 1.85; color: var(--text-3); }
.center-icon {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--brass-ink);
}

.spec-card {
    padding: 24px 22px 26px;
    border: 0;
    border-top: 1px solid var(--rule);
    border-right: 1px solid var(--rule);
    background: transparent !important;
}
.panel .grid-4 { margin-top: 28px; }
.spec-card h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 10px;
}
.spec-card h3 strong { font-weight: 600; color: inherit; }
.spec-card p { font-size: 13.5px; line-height: 1.85; color: var(--text-3); }

.scene-list { border-top: 1px solid var(--rule); }
.scene-row {
    display: grid;
    grid-template-columns: 42px 1fr;
    gap: 20px;
    align-items: start;
    padding: 26px 6px;
    border-bottom: 1px solid var(--rule);
    border-left: 0 !important;
    background: transparent !important;
    transition: background 0.25s var(--ease);
}
.scene-row:hover { background: var(--brass-wash) !important; }
.scene-emoji {
    font-size: 19px;
    line-height: 1.6;
    filter: grayscale(1) opacity(0.72);
}
.scene-row h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
}
.scene-row p { font-size: 14px; line-height: 1.9; color: var(--text-3); }

/* --------------------------------------------------------------------------
   13 · 关于我们
   -------------------------------------------------------------------------- */
.about-section { padding: 88px 0; }
.about-content { display: block; }
.about-text h2 {
    font-size: clamp(22px, 2.3vw, 28px);
    font-weight: 500;
    color: var(--text);
    margin-bottom: 24px;
}
.about-text p {
    font-size: 15px;
    line-height: 1.95;
    color: var(--text-2);
    margin-bottom: 16px;
    max-width: 62ch;
}
.about-text ul {
    margin: 30px 0 8px;
    padding: 0;
    border-top: 1px solid var(--rule);
}
.about-text li {
    position: relative;
    padding: 14px 0 14px 20px;
    border-bottom: 1px solid var(--rule);
    font-size: 14.5px;
    color: var(--text-2);
    list-style: none;
}
.about-text li::before { content: none; }
.about-text li strong { color: var(--text); }

/* 公司视频 */
.video-frame {
    position: relative;
    margin-bottom: 52px;
    border: 1px solid var(--rule);
    background: var(--card);
    padding: 9px;
    border-radius: var(--r);
}
/* 锁定 16:9 视窗，视频未加载时也是一块有意的石墨画面，而非塌陷的白条 */
.video-frame video {
    width: 100%;
    aspect-ratio: 16 / 9;
    height: auto;
    display: block;
    object-fit: cover;
    background: var(--ink);
    /* 与首屏同一套调色：压低彩度，让素材落回纸白／黄铜的语境 */
    filter: saturate(0.72) contrast(1.05) brightness(0.96);
}
.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 62px;
    height: 62px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(21, 24, 26, 0.44);
    border: 1px solid var(--brass-lt);
    border-radius: 50%;
    z-index: 10;
    transition: background 0.25s var(--ease), transform 0.25s var(--ease),
                border-color 0.25s var(--ease);
}
.play-btn svg { width: 18px; height: 18px; }
.play-btn svg path { fill: var(--brass-lt); }
.play-btn:hover { background: var(--brass-lt); border-color: var(--brass-lt); transform: translate(-50%, -50%) scale(1.06); }
.play-btn:hover svg path { fill: var(--ink); }
.play-btn[hidden] { display: none; }

/* --------------------------------------------------------------------------
   14 · 联系 / 表单
   -------------------------------------------------------------------------- */
.contact-section { padding: 88px 0; }

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border: 1px solid var(--rule);
    border-radius: var(--r);
    overflow: hidden;
    background: var(--card);
}
.contact-grid { display: contents; }

.contact-info {
    background: var(--ink);
    color: var(--on-ink);
    padding: 46px 44px;
    position: relative;
    overflow: hidden;
}
.contact-info::before { content: none; }
.contact-info > h2 {
    font-size: 21px;
    font-weight: 500;
    color: var(--on-ink);
    margin-bottom: 14px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--rule-ink);
}
.contact-info > p {
    font-size: 14px;
    line-height: 1.9;
    color: var(--on-ink-2);
    margin-bottom: 26px;
}
.contact-item {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 13px 0;
    border-top: 1px solid var(--rule-ink);
    font-size: 14px;
    color: var(--on-ink);
}
.contact-item:last-child { border-bottom: 1px solid var(--rule-ink); }
.contact-item i {
    font-style: normal;
    font-size: 13px;
    opacity: 0.62;
    line-height: 1;
}

.contact-form { padding: 46px 44px; }
.contact-form h2 {
    font-size: 21px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 26px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--rule);
}

.form-group { margin-bottom: 26px; }
.form-group label {
    display: block;
    margin-bottom: 4px;
    font-size: 11.5px;
    font-weight: 500;
    letter-spacing: 0.16em;
    color: var(--text-3);
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 11px 0;
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--rule);
    border-radius: 0;
    font-size: 15px;
    color: var(--text);
    appearance: none;
    -webkit-appearance: none;
    transition: border-color 0.25s var(--ease);
}
.form-group select {
    padding-right: 26px;
    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23A2762C' stroke-width='1.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 4px center;
    cursor: pointer;
}
.form-group textarea { height: 108px; resize: vertical; line-height: 1.8; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-bottom-color: var(--brass);
    box-shadow: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #A9ADA7; }
.form-group select option { background: var(--paper); color: var(--text); }

.submit-btn {
    width: 100%;
    padding: 16px;
    background: var(--ink);
    color: var(--on-ink);
    border: 1px solid var(--ink);
    border-radius: var(--r);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.14em;
    cursor: pointer;
    transition: background 0.25s var(--ease), border-color 0.25s var(--ease),
                color 0.25s var(--ease);
}
.submit-btn:hover {
    background: var(--brass-ink);
    border-color: var(--brass-ink);
    color: #fff;
    transform: none;
    box-shadow: none;
}
.submit-btn[disabled] { opacity: 0.6; cursor: default; }

/* 表单反馈 */
.form-msg {
    padding: 14px 18px;
    margin-bottom: 24px;
    font-size: 13.5px;
    border-left: 2px solid var(--brass);
    background: var(--brass-wash);
    color: var(--brass-ink);
    border-radius: 0 var(--r) var(--r) 0;
}
.form-msg--ok { border-left-color: var(--pine); background: rgba(28, 58, 51, 0.07); color: var(--pine); }
.form-msg--err { border-left-color: #A23A2A; background: rgba(162, 58, 42, 0.07); color: #8E3325; }

/* 微信二维码卡（首页） */
.qr-card {
    padding: 22px 18px 20px;
    margin-top: 18px;
    border: 1px solid var(--rule-ink);
    border-radius: var(--r);
    text-align: center;
    background: transparent;
}
.qr-title {
    font-size: 14.5px;
    font-weight: 600;
    color: var(--on-ink);
    margin-bottom: 6px;
}
.qr-desc {
    font-size: 12.5px;
    color: var(--on-ink-3);
    margin-bottom: 16px;
}
.qr-img {
    width: 132px;
    height: 132px;
    padding: 8px;
    background: #fff;
    border-radius: var(--r);
    margin-left: auto;
    margin-right: auto;
}
.qr-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* 联系页：企业微信卡 / 邮箱卡 */
.wecom-card {
    padding: 24px 20px;
    border: 1px solid var(--rule);
    border-radius: var(--r);
    text-align: center;
    background: transparent;
    transition: border-color 0.25s var(--ease);
}
.wecom-card:hover { border-color: var(--rule-2); }
.wecom-card h4 {
    font-size: 14.5px;
    font-weight: 600;
    color: var(--text);
    margin: 14px 0 6px;
}
.wecom-card p { font-size: 12.5px; color: var(--text-3); line-height: 1.7; }
.wecom-card .qr-img { margin-top: 16px; }
.wecom-card > div:first-child { color: var(--brass-ink); }
.wecom-card svg { width: 22px; height: 22px; margin: 0 auto; }
.wecom-card svg * { stroke: currentColor; stroke-width: 1.5; }

.mail-card {
    padding: 26px 20px;
    border: 1px solid var(--rule);
    border-radius: var(--r);
    text-align: center;
    background: transparent;
    color: var(--brass-ink);
}
.mail-card svg { width: 20px; height: 20px; margin: 0 auto; }
.mail-card svg * { stroke: currentColor; stroke-width: 1.5; }
.mail-addr {
    font-family: var(--mono);
    font-size: 17px;
    letter-spacing: 0.02em;
    color: var(--text);
    margin-top: 14px;
    font-weight: 500;
    background: none;
    -webkit-text-fill-color: currentColor;
}

/* 带 → 标记的条目列表 */
.li-row {
    position: relative;
    padding: 11px 0 11px 18px;
    border-bottom: 1px solid var(--rule);
    font-size: 14.5px;
    color: var(--text-2);
    list-style: none;
}
.li-row strong { color: var(--text); }
.li-bullet {
    position: absolute;
    left: 0;
    top: 11px;
    color: var(--brass);
    font-size: 12px;
    line-height: 1.9;
}

/* --------------------------------------------------------------------------
   15 · 正文／文档排版
   -------------------------------------------------------------------------- */
.prose-card {
    max-width: 900px;
    margin: 0 auto;
    background: var(--card);
    border: 1px solid var(--rule);
    border-radius: var(--r);
    padding: 46px 52px 52px;
}

.article-head { margin-bottom: 34px; }
.article-head h1,
.prose-card h1 {
    font-size: clamp(23px, 2.7vw, 31px);
    font-weight: 500;
    line-height: 1.4;
    letter-spacing: 0.01em;
    color: var(--text);
    margin: 14px 0 16px;
}
.back-link {
    display: inline-block;
    font-size: 12.5px;
    letter-spacing: 0.1em;
    color: var(--text-3);
    transition: color 0.22s var(--ease);
}
.back-link:hover { color: var(--brass-ink); }
.article-meta {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.1em;
    color: var(--text-3);
    padding-bottom: 20px;
    border-bottom: 1px solid var(--rule);
}

.article-body { color: var(--text-2); }
.article-body > p,
.content-page > p,
.prose-card > p {
    font-size: 15px;
    line-height: 1.98;
    color: var(--text-2);
    margin-bottom: 18px;
}
.article-body h2,
.content-page h2,
.prose-card > h2 {
    font-size: 19px;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--text);
    margin: 46px 0 14px;
    padding-top: 22px;
    border-top: 1px solid var(--rule);
}
.article-body h3,
.content-page h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    margin: 30px 0 10px;
}
.article-body ul,
.content-page ul,
.prose-card > ul { margin: 16px 0 22px; }
.article-body li,
.content-page li,
.prose-card > ul > li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 11px;
    font-size: 14.5px;
    line-height: 1.95;
    color: var(--text-2);
}
.article-body li::before,
.content-page li::before,
.prose-card > ul > li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 0.72em;
    width: 5px;
    height: 5px;
    border: 1px solid var(--brass);
}
.prose-card li strong,
.content-page li strong { color: var(--text); }

.prose-card ol,
.content-page ol {
    margin: 16px 0 22px;
    counter-reset: prose-counter;
}
.prose-card ol > li,
.content-page ol > li {
    position: relative;
    padding-left: 26px;
    margin-bottom: 12px;
    font-size: 14.5px;
    line-height: 1.95;
    color: var(--text-2);
    counter-increment: prose-counter;
}
.prose-card ol > li::before,
.content-page ol > li::before {
    content: counter(prose-counter) ".";
    position: absolute;
    left: 0;
    font-family: var(--mono);
    font-size: 12.5px;
    color: var(--brass-ink);
}

.prose-card a,
.content-page a {
    color: var(--brass-ink);
    border-bottom: 1px solid rgba(162, 118, 44, 0.42);
    transition: border-color 0.2s var(--ease);
}
.prose-card a:hover,
.content-page a:hover { border-bottom-color: var(--brass-ink); }

.prose-card code {
    font-family: var(--mono);
    font-size: 12.5px;
    padding: 2px 6px;
    background: var(--paper-2);
    border-radius: var(--r);
    color: var(--text);
}

.prose-card table {
    width: 100%;
    border-collapse: collapse;
    margin: 26px 0 30px;
    font-size: 13.5px;
}
.prose-card th {
    text-align: left;
    font-weight: 600;
    font-size: 12px;
    letter-spacing: 0.12em;
    color: var(--text-3);
    padding: 12px 14px;
    border-bottom: 1px solid var(--rule-2);
    background: var(--paper-2);
}
.prose-card td {
    padding: 14px;
    border-bottom: 1px solid var(--rule);
    color: var(--text-2);
    line-height: 1.8;
    vertical-align: top;
}

.callout {
    border-left: 2px solid var(--brass);
    background: var(--brass-wash);
    padding: 18px 22px;
    margin: 26px 0;
    border-radius: 0 var(--r) var(--r) 0;
    font-size: 14px;
    line-height: 1.9;
    color: var(--text-2);
}
.callout p { margin-bottom: 10px; }
.callout p:last-child { margin-bottom: 0; }
.callout strong { color: var(--text); }

.article-foot {
    margin-top: 46px;
    padding-top: 28px;
    border-top: 1px solid var(--rule);
}
.article-foot > p {
    font-size: 12.5px;
    letter-spacing: 0.12em;
    color: var(--text-3);
    margin-bottom: 14px;
}
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; }

.tag-link {
    display: inline-block;
    padding: 10px 18px;
    border: 1px solid var(--rule);
    border-radius: var(--r);
    font-size: 13px;
    letter-spacing: 0.06em;
    color: var(--text-2);
    transition: border-color 0.22s var(--ease), color 0.22s var(--ease),
                background 0.22s var(--ease);
}
.tag-link:hover { border-color: var(--brass); color: var(--brass-ink); }
.tag-link--accent {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--on-ink);
}
.tag-link--accent:hover {
    background: var(--brass-ink);
    border-color: var(--brass-ink);
    color: #fff;
}
.tag-link--ghost { border-color: var(--rule-2); color: var(--brass-ink); }
.tag-link--ghost:hover { border-color: var(--brass); background: var(--brass-wash); }

/* 文档页（隐私政策 / 服务条款） */
.content-wrap { max-width: 800px; padding-top: 56px; padding-bottom: 88px; }
.content-page > h2:first-child { margin-top: 0; padding-top: 0; border-top: 0; }

/* --------------------------------------------------------------------------
   16 · 资讯列表
   -------------------------------------------------------------------------- */
/* DOM 顺序 = 标题 → 日期 → 摘要（与原文案流一致）；
   视觉上的「左日期 / 右标题摘要」由下方显式网格定位实现。 */
.news-list { border-top: 1px solid var(--rule); }
.news-item { border-bottom: 1px solid var(--rule); }
.news-item > a {
    display: grid;
    grid-template-columns: 118px 1fr;
    column-gap: 32px;
    align-items: baseline;
    padding: 28px 44px 28px 8px;
    transition: padding-left 0.3s var(--ease);
}
.news-item:hover { background: var(--brass-wash); }
.news-item:hover > a { padding-left: 24px; }
.news-item h3 {
    grid-area: 1 / 2;
    font-size: 17.5px;
    font-weight: 500;
    line-height: 1.55;
    letter-spacing: 0.01em;
    color: var(--text);
    margin-bottom: 8px;
}
.news-date {
    grid-area: 1 / 1;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.08em;
    color: var(--brass-ink);
    white-space: nowrap;
}
.news-item p {
    grid-area: 2 / 2;
    font-size: 13.5px;
    line-height: 1.9;
    color: var(--text-3);
}

/* --------------------------------------------------------------------------
   17 · 页脚
   -------------------------------------------------------------------------- */
.footer {
    background: var(--ink);
    color: var(--on-ink-2);
    padding: 72px 0 26px;
    border-top: 1px solid var(--ink);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--rule-ink);
}
.footer h3 {
    font-size: 11.5px;
    font-weight: 500;
    letter-spacing: 0.2em;
    color: var(--brass-lt);
    margin-bottom: 22px;
    background: none;
    -webkit-text-fill-color: currentColor;
}
.footer p {
    font-size: 13.5px;
    line-height: 1.95;
    color: var(--on-ink-2);
    margin-bottom: 12px;
}
.footer br { display: none; }
.footer-grid > div:first-child p { max-width: 34em; }
.footer-links a {
    display: block;
    font-size: 13.5px;
    color: var(--on-ink-2);
    padding: 5px 0;
    transition: color 0.22s var(--ease), padding-left 0.22s var(--ease);
}
.footer-links a:hover { color: var(--on-ink); padding-left: 6px; }
.footer-links-inline {
    display: inline-flex;
    gap: 12px;
    align-items: center;
    margin-top: 14px;
}
.footer-links-inline a { font-size: 12.5px; color: var(--on-ink-3); }
.footer-links-inline a:hover { color: var(--brass-lt); }
.footer-divider-inline { color: var(--rule-ink-2); font-size: 11px; }
.footer-bottom {
    padding-top: 24px;
    font-size: 12.5px;
    letter-spacing: 0.04em;
    color: var(--on-ink-3);
}
.footer-bottom-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-bottom: 12px;
}
.footer-bottom-content a { color: var(--on-ink-3); }
.footer-bottom-content a:hover { color: var(--brass-lt); }
.footer-divider { color: var(--rule-ink-2); }

/* --------------------------------------------------------------------------
   18 · 动效
   -------------------------------------------------------------------------- */
/* 仅在脚本可用时隐藏，避免脚本失效导致内容不可见 */
html.js .reveal {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.62s var(--ease), transform 0.62s var(--ease);
}
html.js .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    html.js .reveal { opacity: 1; transform: none; transition: none; }
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        transition-duration: 0.001ms !important;
    }
}

/* --------------------------------------------------------------------------
   19 · 响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
    .cols-4,
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .flow { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 960px) {
    .hero { padding: 64px 0 66px; }
    .hero .container {
        grid-template-columns: minmax(0, 1fr);
        gap: 40px;
    }
    .hero p { margin-bottom: 32px; }
    .hero-visual { order: 2; }
    .hero-video-container { aspect-ratio: 16 / 9; }

    .features-grid,
    .cols-3,
    .grid-3x2 { grid-template-columns: repeat(2, 1fr); }
    .cols-4,
    .grid-4 { grid-template-columns: repeat(2, 1fr); }

    .contact-container { grid-template-columns: 1fr; }
    .contact-info,
    .contact-form { padding: 38px 32px; }

    .service-item > a { grid-template-columns: minmax(160px, 240px) 1fr; gap: 28px; }
    .service-item.has-icon { grid-template-columns: auto minmax(140px, 220px) 1fr; }

    .section { padding: 68px 0; }
    .services-section,
    .about-section,
    .contact-section { padding: 68px 0; }
    .sec-title { margin-bottom: 40px; }

    .prose-card { padding: 36px 30px 40px; }
    .content-wrap { padding-top: 40px; padding-bottom: 68px; }

    /* 移动端导航抽屉 */
    .hamburger { display: flex; }
    .navbar-menu {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        display: block;
        padding: 8px var(--gutter) 24px;
        background: var(--paper);
        border-bottom: 1px solid var(--rule);
        transform: translateY(-8px);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.28s var(--ease), opacity 0.28s var(--ease),
                    visibility 0.28s var(--ease);
        max-height: calc(100vh - var(--header-h));
        overflow-y: auto;
    }
    .navbar-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    .navbar-menu a {
        display: block;
        padding: 16px 0;
        border-bottom: 1px solid var(--rule);
        font-size: 16px;
        letter-spacing: 0.04em;
    }
    .navbar-menu a::after { display: none; }
    .navbar-menu a:last-child { border-bottom: 0; }
}

@media (max-width: 640px) {
    :root { --gutter: 20px; }

    .hero { padding: 48px 0 54px; }
    .hero h1 { margin-bottom: 20px; }

    .section { padding: 56px 0; }
    .services-section,
    .about-section,
    .contact-section { padding: 56px 0; }
    .page-hero { padding: 46px 0 30px; }
    .sec-title { margin-bottom: 32px; }

    .features-grid,
    .cols-3,
    .cols-4,
    .grid-3x2,
    .grid-4 { grid-template-columns: 1fr; }
    .feature-card { padding: 26px 22px 28px; }
    .layer-card,
    .mm-card,
    .spec-card { padding: 24px 22px 26px; }

    .flow { grid-template-columns: 1fr; }
    .step { padding: 22px 20px 26px; }
    .step-num { margin-bottom: 14px; }

    .service-item > a {
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 24px 6px;
    }
    .service-item.has-icon {
        grid-template-columns: 34px 1fr;
        column-gap: 16px;
        row-gap: 6px;
        align-items: start;
        padding: 24px 6px;
    }
    .service-item.has-icon .service-icon-wrap { grid-area: 1 / 1 / 2 / 2; }
    .service-item.has-icon h3 { grid-area: 1 / 2; }
    .service-item.has-icon p { grid-area: 2 / 2; }
    .service-item.has-icon:hover { padding-left: 16px; }
    .service-item.has-icon .service-icon { width: 30px; height: 30px; }
    .service-item:hover > a { padding-left: 16px; }
    .service-item h3 { font-size: 18px; }
    .service-item::after { display: none; }

    .news-item > a { grid-template-columns: 88px 1fr; column-gap: 14px; padding: 22px 6px; }
    .news-date { font-size: 10.5px; letter-spacing: 0.02em; }
    .news-item h3 { font-size: 16px; }
    .news-item:hover > a { padding-left: 14px; }

    .panel { padding: 26px 22px; }
    .prose-card {
        padding: 28px 22px 32px;
        border-left: 0;
        border-right: 0;
        border-radius: 0;
    }
    .article-head h1 { margin-top: 12px; }
    .article-body h2,
    .content-page h2 { font-size: 17.5px; margin-top: 36px; padding-top: 18px; }

    .contact-info,
    .contact-form { padding: 30px 22px; }
    .qr-row { grid-template-columns: 1fr; }
    .scene-row { grid-template-columns: 32px 1fr; gap: 14px; padding: 22px 6px; }
    .mail-addr { font-size: 15px; }

    .footer { padding: 52px 0 22px; }
    .footer-grid { grid-template-columns: 1fr; gap: 34px; padding-bottom: 34px; }
    .video-frame { margin-bottom: 36px; }
    .play-btn { width: 52px; height: 52px; }
}

/* --------------------------------------------------------------------------
   20 · 打印
   -------------------------------------------------------------------------- */
@media print {
    .navbar,
    .footer,
    .contact-section,
    .hero-visual,
    .back-link { display: none; }
    body { padding-top: 0; background: #fff; }
    .panel,
    .prose-card { border-color: #ccc; }
}