/* ============================================================
 * FASIV 官网设计系统 v3 —— JD Solution 风格
 * 黑/白极简 + 靛蓝点缀 · Montserrat 展示字体 · 胶囊按钮 · 细描边卡片
 * ============================================================ */

/* ---------- 字体（自托管 Montserrat latin） ---------- */
@font-face {
    font-family: 'Montserrat';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('../fonts/montserrat-400.woff2') format('woff2');
}
@font-face {
    font-family: 'Montserrat';
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url('../fonts/montserrat-500.woff2') format('woff2');
}
@font-face {
    font-family: 'Montserrat';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('../fonts/montserrat-600.woff2') format('woff2');
}
@font-face {
    font-family: 'Montserrat';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('../fonts/montserrat-700.woff2') format('woff2');
}

/* ---------- 设计令牌 ---------- */
:root {
    --ink: #111;            /* 主黑 */
    --ink-2: #333;          /* 次黑 */
    --gray: #545454;        /* 主灰 */
    --gray-2: #707070;      /* 次灰 */
    --brand: #2E3192;       /* 靛蓝主色 */
    --brand-2: #0F75BC;     /* 亮蓝辅助 */
    --strk: #D9D9D9;        /* 描边 */
    --strk-2: #e9e9e9;      /* 弱描边 */
    --bg1: #FAFAFA;         /* 浅灰底 1 */
    --bg2: #F2F2F2;         /* 浅灰底 2 */
    --grad-1: linear-gradient(135deg, #0F75BC 0%, #2E3192 100%);
    --grad-2: linear-gradient(90deg, #0F75BC 0%, #2E3192 100%);
    --shadow-1: 0 4px 16px rgba(17, 17, 17, 0.08);
    --shadow-2: 0 14px 36px rgba(17, 17, 17, 0.14);
    --header-h: 70px;
    --radius: 10px;
    --wrap: 1280px;
    --font: 'Montserrat', 'Pretendard', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
}

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: none; scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.7;
    color: var(--ink);
    letter-spacing: -0.01em;
    word-break: break-word;
    background: #fff;
}
h1, h2, h3, h4, h5, h6, p, ul, ol, dl, dd, figure, blockquote { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: color .25s ease, background .25s ease, border-color .25s ease, opacity .25s ease; }
button { font-family: inherit; cursor: pointer; }
svg { fill: currentColor; }
[hidden] { display: none !important; }
::selection { background: var(--brand); color: #fff; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 32px; }
.wrap-narrow { max-width: 880px; }

/* ============================================================
 * 按钮（胶囊体系）
 * ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 100px;
    border: 1px solid transparent;
    font-family: var(--font);
    font-weight: 600;
    letter-spacing: .02em;
    line-height: 1;
    white-space: nowrap;
    transition: all .3s ease;
}
.btn i { font-style: normal; transition: transform .3s ease; }
.btn:hover i { transform: translateX(4px); }
.btn-md { height: 50px; padding: 0 32px; font-size: 14px; }
.btn-sm { height: 40px; padding: 0 22px; font-size: 13px; }
.btn-lg { height: 56px; padding: 0 40px; font-size: 15px; }

.btn-brand { background: var(--grad-1); color: #fff; }
.btn-brand:hover { box-shadow: 0 12px 26px rgba(46, 49, 146, 0.32); transform: translateY(-2px); }
.btn-line { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-line:hover { background: var(--ink); color: #fff; }
.btn-line-w { border-color: rgba(255, 255, 255, 0.55); color: #fff; background: transparent; }
.btn-line-w:hover { background: #fff; color: var(--ink); }
.btn-white { background: #fff; color: var(--ink); }
.btn-white:hover { background: rgba(255, 255, 255, 0.85); transform: translateY(-2px); }
.btn-ink { background: var(--ink); color: #fff; }
.btn-ink:hover { background: var(--brand); transform: translateY(-2px); }
.btn[disabled] { opacity: .55; pointer-events: none; }

/* ============================================================
 * 头部（黑色固定条 · 滚动转白）
 * ============================================================ */
.site-header {
    position: fixed;
    left: 0; top: 0; right: 0;
    z-index: 999;
    height: var(--header-h);
    background: #000;
    transition: background .3s ease, box-shadow .3s ease;
}
.site-header::after {
    content: '';
    display: block;
    position: absolute; left: 0; bottom: -1px;
    width: 100%; height: 1px;
    background: rgba(255, 255, 255, 0.14);
    transition: opacity .3s ease;
}
.site-header.scrolled { background: #fff; box-shadow: 0 1px 0 var(--strk-2), 0 8px 24px rgba(17, 17, 17, 0.05); }
.site-header.scrolled::after { opacity: 0; }

.header-inner {
    display: flex;
    align-items: center;
    height: var(--header-h);
    gap: 40px;
}
.logo { flex: none; display: flex; align-items: center; gap: 14px; }
.logo img { flex: none; height: 30px; width: auto; }
.logo-text {
    display: flex;
    flex-direction: column;
    gap: 3px;
    white-space: nowrap;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    line-height: 1;
    color: #fff;
    transition: color .3s ease;
}
.logo-text span { font-size: 10.5px; font-weight: 400; letter-spacing: .1em; opacity: .72; }
.site-header.scrolled .logo-text { color: var(--ink); }

/* 主导航 */
.gnav { margin-left: 8px; flex: none; }
.gnav > ul { display: flex; align-items: center; gap: 4px; }
.gnav > ul > li { position: static; }
.gnav > ul > li > a {
    display: flex;
    align-items: center;
    gap: 6px;
    height: var(--header-h);
    padding: 0 18px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: #fff;
    white-space: nowrap;
}
.gnav > ul > li > a:hover, .gnav > ul > li.active > a { color: #fff; opacity: .72; }
.site-header.scrolled .gnav > ul > li > a { color: var(--ink); }
.site-header.scrolled .gnav > ul > li > a:hover,
.site-header.scrolled .gnav > ul > li.active > a { color: var(--brand); opacity: 1; }
.gnav .caret {
    width: 7px; height: 7px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg) translateY(-2px);
    opacity: .6;
    transition: transform .25s ease;
}
.gnav li.has-sub:hover .caret { transform: rotate(225deg) translateY(-2px); }

/* 全宽下拉面板（jdsol 式：左链接列表 + 右产品图卡） */
.submenu {
    position: absolute;
    left: 0; right: 0; top: 100%;
    background: #fff;
    border-top: 1px solid var(--strk-2);
    box-shadow: 0 32px 48px rgba(17, 17, 17, 0.1);
    padding: 44px 0 52px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all .28s ease;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
}
.gnav li.has-sub:hover .submenu,
.gnav li.has-sub:focus-within .submenu { opacity: 1; visibility: visible; transform: translateY(0); }
.submenu-inner {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 64px;
    align-items: start;
}
.sub-links li { border-bottom: 1px solid var(--strk-2); }
.sub-links li:first-child { border-top: 1px solid var(--strk-2); }
.sub-links a {
    display: block;
    padding: 13px 4px;
    font-size: 15px;
    font-weight: 500;
    color: var(--ink-2);
    transition: all .25s ease;
}
.sub-links a:hover { color: var(--brand); padding-left: 12px; }
.sub-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
    gap: 22px;
}
.sub-card { min-width: 0; }
.sub-tile {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1 / 1;
    background: var(--bg1);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all .3s ease;
}
.sub-tile img {
    max-width: 82%;
    max-height: 82%;
    width: auto; height: auto;
    object-fit: contain;
    transition: transform .4s ease;
}
.sub-card:hover .sub-tile { background: var(--bg2); box-shadow: var(--shadow-1); }
.sub-card:hover .sub-tile img { transform: scale(1.06); }
.sub-card em {
    display: block;
    margin-top: 12px;
    font-size: 14px;
    font-style: normal;
    font-weight: 500;
    color: var(--ink-2);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sub-card:hover em { color: var(--brand); }
/* 非产品面板：右侧图卡组弹性铺满，避免中部留白（固定高度、按数量均分宽度） */
.sub-cards--compact {
    display: flex;
    gap: 24px;
}
.sub-cards--compact .sub-card { flex: 1 1 0; min-width: 0; }
.sub-cards--compact .sub-tile { aspect-ratio: auto; height: 200px; }
.sub-cards--compact .sub-tile img { max-width: 100%; max-height: 100%; width: 100%; height: 100%; object-fit: cover; }
/* 图标类配图（如下载图标）不裁切：contain 居中并留边 */
.sub-cards--compact .sub-tile img.img-contain { width: auto; height: auto; max-width: 76%; max-height: 82%; object-fit: contain; }

/* 右侧工具区 */
.header-tools {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 10px;
}
.hd-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 38px;
    padding: 0 18px;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: #fff;
    background: transparent;
    transition: all .3s ease;
    white-space: nowrap;
}
.hd-pill:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); }
.site-header.scrolled .hd-pill { border-color: var(--strk); color: var(--ink); }
.site-header.scrolled .hd-pill:hover { border-color: var(--ink); background: var(--bg1); }

/* 语言下拉 */
.lang-wrap { position: relative; }
.lang-menu {
    position: absolute;
    right: 0; top: calc(100% + 10px);
    min-width: 100%;
    background: #fff;
    border: 1px solid var(--strk-2);
    border-radius: 10px;
    box-shadow: var(--shadow-2);
    padding: 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all .25s ease;
}
.lang-wrap:hover .lang-menu, .lang-wrap:focus-within .lang-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-menu a {
    display: block;
    padding: 9px 16px;
    border-radius: 7px;
    font-size: 13px;
    font-weight: 600;
    color: var(--ink-2);
    text-align: center;
    white-space: nowrap;
}
.lang-menu a:hover, .lang-menu a.on { background: var(--bg1); color: var(--brand); }

/* 商城下拉 */
.shop-wrap { position: relative; }
.shop-pop {
    position: absolute;
    right: 0; top: calc(100% + 10px);
    min-width: 132px;
    background: #fff;
    border: 1px solid var(--strk-2);
    border-radius: 10px;
    box-shadow: var(--shadow-2);
    padding: 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all .25s ease;
    z-index: 5;
}
.shop-wrap:hover .shop-pop, .shop-wrap:focus-within .shop-pop { opacity: 1; visibility: visible; transform: translateY(0); }
.shop-pop a {
    display: block;
    padding: 9px 16px;
    border-radius: 7px;
    font-size: 13px;
    font-weight: 500;
    color: var(--ink-2);
    text-align: center;
}
.shop-pop a:hover { background: var(--bg1); color: var(--brand); }

/* 图标按钮（搜索 / 汉堡） */
.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px; height: 38px;
    border: 0;
    border-radius: 50%;
    background: transparent;
    color: #fff;
    transition: all .25s ease;
}
.icon-btn svg { width: 20px; height: 20px; }
.icon-btn:hover { background: rgba(255, 255, 255, 0.12); }
.site-header.scrolled .icon-btn { color: var(--ink); }
.site-header.scrolled .icon-btn:hover { background: var(--bg2); }

/* 汉堡 */
.nav-toggle { display: none; width: 40px; height: 40px; position: relative; }
.nav-toggle span {
    position: absolute;
    left: 10px;
    width: 20px; height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition: all .3s ease;
}
.nav-toggle span:nth-child(1) { top: 13px; }
.nav-toggle span:nth-child(2) { top: 19px; }
.nav-toggle span:nth-child(3) { top: 25px; }
.nav-toggle.open span:nth-child(1) { top: 19px; transform: rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { top: 19px; transform: rotate(-45deg); }

/* 搜索条 */
.search-bar {
    position: absolute;
    left: 0; right: 0; top: 100%;
    background: #fff;
    border-bottom: 1px solid var(--strk-2);
    box-shadow: 0 24px 40px rgba(17, 17, 17, 0.08);
}
.search-form {
    display: flex;
    align-items: center;
    gap: 14px;
    height: 84px;
}
.search-form svg { width: 22px; height: 22px; color: var(--gray-2); flex: none; }
.search-form input {
    flex: 1;
    height: 100%;
    border: 0;
    outline: 0;
    font-family: var(--font);
    font-size: 17px;
    color: var(--ink);
    background: transparent;
}
.search-form button {
    flex: none;
    height: 44px;
    padding: 0 30px;
    border: 0;
    border-radius: 100px;
    background: var(--grad-1);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    transition: opacity .25s ease;
}
.search-form button:hover { opacity: .88; }

/* ============================================================
 * 移动端抽屉
 * ============================================================ */
.mask {
    position: fixed;
    inset: 0;
    z-index: 998;
    background: rgba(17, 17, 17, 0.55);
    opacity: 0;
    transition: opacity .3s ease;
}
.mask.show { opacity: 1; }
.m-nav {
    position: fixed;
    right: 0; top: 0; bottom: 0;
    z-index: 999;
    width: min(84vw, 380px);
    background: #fff;
    transform: translateX(105%);
    transition: transform .35s cubic-bezier(.22, .8, .3, 1);
    overflow-y: auto;
    padding: calc(var(--header-h) + 10px) 28px 32px;
}
.m-nav.open { transform: translateX(0); }
.m-nav > ul > li { border-bottom: 1px solid var(--strk-2); }
.m-nav > ul > li > a, .m-nav details summary a {
    display: block;
    padding: 15px 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--ink);
}
.m-nav details summary { list-style: none; display: flex; align-items: center; cursor: pointer; }
.m-nav details summary::-webkit-details-marker { display: none; }
.m-nav details summary a { flex: 1; }
.m-nav details summary i {
    width: 9px; height: 9px;
    border-right: 1.6px solid var(--gray-2);
    border-bottom: 1.6px solid var(--gray-2);
    transform: rotate(45deg);
    transition: transform .3s ease;
}
.m-nav details[open] summary i { transform: rotate(225deg); }
.m-nav details ul { padding: 0 0 12px 14px; }
.m-nav details ul a {
    display: block;
    padding: 9px 0;
    font-size: 14px;
    color: var(--gray);
}
.m-nav details ul a:hover { color: var(--brand); }
.m-nav-foot {
    display: flex;
    gap: 10px;
    margin-top: 24px;
}
.m-nav-foot .btn { flex: 1; }

/* ============================================================
 * 内页头图（sub-visual）
 * ============================================================ */
.page-hero {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 480px;
    padding: calc(var(--header-h) + 60px) 0 96px;
    text-align: center;
    color: #fff;
    background: #111 url('../img/gen/hero-dark.jpg') no-repeat center / cover;
}
.page-hero::before {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(17, 17, 17, 0.62) 0%, rgba(17, 17, 17, 0.45) 55%, rgba(17, 17, 17, 0.66) 100%);
}
.page-hero .wrap { position: relative; }
.crumbs {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 22px;
    font-size: 12.5px;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.62);
}
.crumbs a:hover { color: #fff; }
.crumbs i { font-style: normal; opacity: .5; }
.page-hero-title {
    position: relative;
    display: inline-block;
    padding-bottom: 26px;
    margin-bottom: 18px;
    font-size: clamp(30px, 4vw, 46px);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: .02em;
    text-transform: uppercase;
}
.page-hero-title::after {
    content: '';
    position: absolute;
    left: 50%; bottom: 0;
    transform: translateX(-50%);
    width: 56px; height: 2px;
    background: rgba(255, 255, 255, 0.85);
}
.page-hero-sub { font-size: 15.5px; color: rgba(255, 255, 255, 0.78); }

/* 内页标签条（sub-tab） */
.sub-tabs {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(17, 17, 17, 0.32);
    backdrop-filter: blur(6px);
}
.sub-tabs ul {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}
.sub-tabs a {
    display: block;
    padding: 19px 44px;
    font-size: 14.5px;
    font-weight: 600;
    letter-spacing: .04em;
    color: rgba(255, 255, 255, 0.72);
    position: relative;
}
.sub-tabs a:hover { color: #fff; }
.sub-tabs a.on { color: #fff; }
.sub-tabs a.on::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: -1px;
    height: 2px;
    background: #fff;
}

/* ============================================================
 * 区块通用
 * ============================================================ */
.sec { padding: 110px 0; }
.sec-tight { padding: 80px 0; }
.sec-bg1 { background: var(--bg1); }
.sec-bg2 { background: var(--bg2); }

.sec-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.sec-head-left { margin: 0 0 48px; text-align: left; }
.sec-eyebrow {
    display: block;
    margin-bottom: 16px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .22em;
    text-transform: uppercase;
    color: var(--brand);
}
.sec-title {
    font-size: clamp(26px, 3vw, 38px);
    font-weight: 700;
    line-height: 1.25;
    color: var(--ink);
    letter-spacing: 0;
}
.sec-sub { margin-top: 16px; font-size: 15.5px; color: var(--gray-2); }
.sec-head-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    text-align: left;
    max-width: none;
}
.sec-head-row > .btn { flex: none; margin-bottom: 4px; }

.block-title {
    margin: 0 0 32px;
    font-size: 24px;
    font-weight: 700;
    color: var(--ink);
}
.lead { max-width: 820px; margin-bottom: 48px; font-size: 16px; color: var(--gray); }
.empty { padding: 72px 0; text-align: center; color: var(--gray-2); font-size: 15px; }
.empty.light { color: rgba(255, 255, 255, 0.6); }

/* ============================================================
 * 通用卡片（产品 / 白描边圆角）
 * ============================================================ */
.p-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.p-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--strk-2);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all .35s ease;
}
.p-card:hover { border-color: var(--strk); box-shadow: var(--shadow-2); transform: translateY(-6px); }
.p-card figure {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--bg1);
}
.p-card figure img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform .6s ease;
}
.p-card:hover figure img { transform: scale(1.05); }
.p-body {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 22px 22px 24px;
}
.p-body h3 {
    font-size: 16.5px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--ink);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.p-body p {
    font-size: 13.5px;
    color: var(--gray-2);
    line-height: 1.65;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 44px;
}
.p-more {
    margin-top: auto;
    padding-top: 6px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--brand);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.p-more i { transition: transform .3s ease; }
.p-card:hover .p-more i { transform: translateX(4px); }

/* 分类筛选 chips（胶囊 tab） */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 56px;
}
.chip {
    display: inline-flex;
    align-items: center;
    height: 42px;
    padding: 0 26px;
    border: 1px solid var(--strk);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray);
    transition: all .3s ease;
}
.chip:hover { border-color: var(--ink); color: var(--ink); }
.chip.active { background: var(--ink); border-color: var(--ink); color: #fff; }

/* ============================================================
 * 参数表（靛蓝表头 · jdsol system-table）
 * ============================================================ */
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table th, .spec-table td { text-align: left; vertical-align: top; }
.spec-table tbody th {
    width: 220px;
    padding: 18px 24px;
    background: var(--brand);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
}
.spec-table tbody td {
    padding: 18px 24px;
    border-bottom: 1px solid var(--strk-2);
    background: var(--bg1);
    font-size: 14px;
    color: var(--ink-2);
}
.spec-table tbody tr:last-child td { border-bottom: 0; }

/* ============================================================
 * 产品优点（WHY FASIV · 关于页）
 * ============================================================ */
.merit-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 56px;
}
.merit-card {
    padding: 40px 30px;
    background: var(--bg1);
    border-radius: var(--radius);
    text-align: center;
    transition: all .35s ease;
}
.merit-card:hover { background: #fff; box-shadow: var(--shadow-2); transform: translateY(-6px); }
.merit-ico {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 88px; height: 88px;
    background: var(--bg2);
    border-radius: 50%;
    overflow: hidden;
}
.merit-ico img { width: 46px; height: 46px; object-fit: contain; }
.merit-card h3 { margin-top: 22px; font-size: 16.5px; font-weight: 700; color: var(--ink); }
.merit-card p { margin-top: 12px; font-size: 13.5px; line-height: 1.7; color: var(--gray-2); text-align: center; }

/* ============================================================
 * 产品详情
 * ============================================================ */
.detail-grid {
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    gap: 64px;
    align-items: start;
    margin-bottom: 88px;
}
.gallery-main {
    border: 1px solid var(--strk-2);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--bg1);
    cursor: zoom-in;
}
.gallery-main img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.gallery-thumbs {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 14px;
}
.g-thumb {
    width: 84px;
    aspect-ratio: 1 / 1;
    padding: 0;
    border: 1px solid var(--strk-2);
    border-radius: 8px;
    overflow: hidden;
    background: var(--bg1);
    transition: all .25s ease;
}
.g-thumb img { width: 100%; height: 100%; object-fit: cover; }
.g-thumb.active, .g-thumb:hover { border-color: var(--brand); }
.detail-cate {
    font-size: 12.5px;
    font-weight: 700;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--brand);
}
.detail-name { margin-top: 12px; font-size: clamp(24px, 2.6vw, 34px); font-weight: 700; line-height: 1.3; color: var(--ink); }
.detail-summary { margin-top: 18px; font-size: 15px; color: var(--gray-2); }
.detail-params-brief { margin-top: 30px; border-top: 1px solid var(--strk); }
.detail-params-brief li {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 24px;
    padding: 13px 2px;
    border-bottom: 1px solid var(--strk-2);
}
.detail-params-brief li span { font-size: 13.5px; color: var(--gray-2); flex: none; }
.detail-params-brief li b { font-size: 14px; font-weight: 600; color: var(--ink); text-align: right; }
.detail-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.spec-block { margin-bottom: 72px; }
.spec-block:last-child { margin-bottom: 0; }

/* ============================================================
 * 新闻
 * ============================================================ */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.news-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--strk-2);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all .35s ease;
}
.news-card:hover { border-color: var(--strk); box-shadow: var(--shadow-2); transform: translateY(-6px); }
.news-card figure {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--bg1);
}
.news-card figure > img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform .6s ease;
}
.news-card:hover figure > img { transform: scale(1.05); }
.news-card time {
    position: absolute;
    left: 0; bottom: 0;
    padding: 8px 16px;
    background: rgba(17, 17, 17, 0.78);
    backdrop-filter: blur(4px);
    color: #fff;
    font-size: 12.5px;
    font-weight: 600;
    letter-spacing: .06em;
}
.news-noimg {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%; height: 100%;
    background: var(--bg2);
}
.news-noimg i {
    font-style: normal;
    font-size: 26px;
    font-weight: 700;
    letter-spacing: .12em;
    color: var(--strk);
}
.news-body { display: flex; flex-direction: column; gap: 10px; padding: 22px 22px 24px; }
.news-body h3 {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    color: var(--ink);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 48px;
}
.news-body p {
    font-size: 13.5px;
    color: var(--gray-2);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-more {
    margin-top: auto;
    padding-top: 6px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--brand);
}

/* 公告板行式列表（bbs 风） */
.news-list-rows { border-top: 1px solid var(--strk); }
.news-row {
    display: flex;
    align-items: center;
    gap: 28px;
    padding: 26px 8px;
    border-bottom: 1px solid var(--strk-2);
    transition: background .25s ease;
}
.news-row:hover { background: var(--bg1); }
.news-row time {
    flex: none;
    width: 92px;
    font-size: 14px;
    font-weight: 600;
    color: var(--brand);
    letter-spacing: .02em;
}
.news-row .nr-fig {
    flex: none;
    width: 128px;
    aspect-ratio: 16 / 10;
    border-radius: 6px;
    overflow: hidden;
    background: var(--bg2);
}
.news-row .nr-fig img { width: 100%; height: 100%; object-fit: cover; }
.news-row .nr-text { flex: 1; min-width: 0; }
.news-row h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.5;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.news-row p {
    margin-top: 6px;
    font-size: 13.5px;
    color: var(--gray-2);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.news-row > i {
    flex: none;
    font-style: normal;
    color: var(--strk);
    transition: color .25s ease, transform .25s ease;
}
.news-row:hover > i { color: var(--brand); transform: translateX(4px); }

/* 文章详情 */
.article-head { margin-bottom: 36px; text-align: center; }
.article-head h1 { font-size: clamp(24px, 3vw, 34px); font-weight: 700; line-height: 1.4; color: var(--ink); }
.article-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px 20px;
    margin-top: 20px;
    font-size: 13.5px;
    color: var(--gray-2);
}
.article-meta span::before { content: '·'; margin-right: 20px; color: var(--strk); }
.article-meta span:first-child::before { content: none; }
.article-cover { margin-bottom: 40px; border-radius: var(--radius); overflow: hidden; }
.article-body { font-size: 15.5px; }

.article-pn {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 64px;
}
.pn {
    display: block;
    padding: 20px 24px;
    border: 1px solid var(--strk-2);
    border-radius: var(--radius);
    transition: all .3s ease;
    min-width: 0;
}
.pn:hover { border-color: var(--brand); }
.pn.next { text-align: right; }
.pn em {
    display: block;
    margin-bottom: 6px;
    font-size: 12px;
    font-style: normal;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--gray-2);
}
.pn span {
    display: block;
    font-size: 14.5px;
    font-weight: 600;
    color: var(--ink);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.article-back { margin-top: 40px; text-align: center; }

/* ============================================================
 * 富文本
 * ============================================================ */
.rich { line-height: 1.9; color: var(--ink-2); }
.rich p { margin: 0 0 1.2em; }
.rich img { display: block; max-width: 100%; height: auto; margin: 1.4em auto; border-radius: 8px; }
.rich h1, .rich h2, .rich h3, .rich h4 { margin: 1.6em 0 .8em; color: var(--ink); font-weight: 700; line-height: 1.4; }
.rich h2 { font-size: 22px; }
.rich h3 { font-size: 18px; }
.rich ul, .rich ol { margin: 0 0 1.2em; padding-left: 1.6em; list-style: disc; }
.rich ol { list-style: decimal; }
.rich li { margin-bottom: .4em; }
.rich table { width: 100%; border-collapse: collapse; margin: 1.4em 0; }
.rich table td, .rich table th { border: 1px solid var(--strk-2); padding: 10px 14px; }
.rich a { color: var(--brand); }
.rich blockquote {
    margin: 1.4em 0;
    padding: 14px 22px;
    border-left: 3px solid var(--brand);
    background: var(--bg1);
    color: var(--gray);
}

/* ============================================================
 * FAQ
 * ============================================================ */
.faq-list { border-top: 1px solid var(--strk); }
.faq-item { border-bottom: 1px solid var(--strk-2); }
.faq-item summary {
    display: flex;
    align-items: center;
    gap: 22px;
    padding: 26px 8px;
    cursor: pointer;
    list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-no {
    flex: none;
    font-size: 15px;
    font-weight: 700;
    color: var(--brand);
    letter-spacing: .04em;
}
.faq-q { flex: 1; font-size: 16px; font-weight: 600; color: var(--ink); line-height: 1.55; }
.faq-arrow {
    flex: none;
    position: relative;
    width: 34px; height: 34px;
    border: 1px solid var(--strk);
    border-radius: 50%;
    transition: all .3s ease;
}
.faq-arrow::before, .faq-arrow::after {
    content: '';
    position: absolute;
    left: 50%; top: 50%;
    width: 11px; height: 1.6px;
    background: var(--ink);
    transform: translate(-50%, -50%);
    transition: transform .3s ease;
}
.faq-arrow::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq-item[open] .faq-arrow { background: var(--ink); border-color: var(--ink); }
.faq-item[open] .faq-arrow::before, .faq-item[open] .faq-arrow::after { background: #fff; }
.faq-item[open] .faq-arrow::after { transform: translate(-50%, -50%) rotate(0deg); }
.faq-a {
    padding: 0 8px 30px 52px;
    font-size: 14.5px;
    color: var(--gray);
}

/* ============================================================
 * 资料下载
 * ============================================================ */
.dl-list { border-top: 1px solid var(--strk); }
.dl-item {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px 8px;
    border-bottom: 1px solid var(--strk-2);
}
.dl-icon {
    flex: none;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px; height: 56px;
    background: var(--bg2);
    border-radius: var(--radius);
    color: var(--brand);
}
.dl-icon svg { width: 24px; height: 24px; }
.dl-text { flex: 1; min-width: 0; }
.dl-text h3 { font-size: 15.5px; font-weight: 600; color: var(--ink); }
.dl-text p { margin-top: 4px; font-size: 13px; color: var(--gray-2); }

/* ============================================================
 * 证书
 * ============================================================ */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.cert-card {
    background: #fff;
    border: 1px solid var(--strk-2);
    border-radius: var(--radius);
    padding: 18px;
    transition: all .35s ease;
    cursor: zoom-in;
}
.cert-card:hover { border-color: var(--strk); box-shadow: var(--shadow-2); transform: translateY(-6px); }
.cert-card img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: contain;
    background: var(--bg1);
    border-radius: 6px;
}
.cert-card figcaption {
    margin-top: 14px;
    font-size: 14px;
    font-weight: 600;
    color: var(--ink-2);
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============================================================
 * 关于页
 * ============================================================ */
.about-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 56px;
    align-items: start;
}
.about-pic { border-radius: var(--radius); overflow: hidden; cursor: zoom-in; }
.about-pic img { width: 100%; }

/* 数据带 */
.stat-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin: 88px 0;
}
.stat-list li {
    padding: 36px 20px;
    background: var(--bg1);
    border-radius: var(--radius);
    text-align: center;
}
.stat-list strong {
    display: block;
    font-size: clamp(30px, 3.4vw, 44px);
    font-weight: 700;
    line-height: 1.1;
    color: var(--brand);
    letter-spacing: -0.01em;
}
.stat-list strong span { font-size: .55em; font-weight: 600; margin-left: 2px; }
.stat-list p { margin-top: 12px; font-size: 13.5px; color: var(--gray); }

/* ============================================================
 * 销售 / 联系支持卡
 * ============================================================ */
.support-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.support-card {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 30px 28px;
    background: #fff;
    border: 1px solid var(--strk-2);
    border-radius: var(--radius);
    transition: all .35s ease;
    min-width: 0;
}
.support-card:hover { border-color: var(--brand); box-shadow: var(--shadow-1); transform: translateY(-4px); }
.support-card svg { flex: none; width: 26px; height: 26px; color: var(--brand); }
.support-card em {
    flex: none;
    display: block;
    font-size: 11.5px;
    font-style: normal;
    font-weight: 700;
    letter-spacing: .18em;
    color: var(--gray-2);
    margin-bottom: 4px;
}
.support-card strong {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--ink);
    overflow-wrap: break-word;
}

/* ============================================================
 * 联系页
 * ============================================================ */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 96px;
}
.contact-card {
    padding: 34px 28px;
    background: var(--bg1);
    border-radius: var(--radius);
    transition: all .3s ease;
}
.contact-card:hover { background: #fff; box-shadow: var(--shadow-2); transform: translateY(-4px); }
.contact-card svg { width: 26px; height: 26px; color: var(--brand); }
.contact-card em {
    display: block;
    margin: 16px 0 8px;
    font-size: 12px;
    font-style: normal;
    font-weight: 700;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--gray-2);
}
.contact-card strong {
    display: block;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.6;
    color: var(--ink);
    overflow-wrap: break-word;
}
.contact-card strong a:hover { color: var(--brand); }

.msg-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.4fr;
    gap: 64px;
    align-items: start;
}
.msg-side .sec-title { font-size: 26px; }
.msg-side .sec-sub { margin-top: 12px; }
.msg-qr {
    margin-top: 32px;
    width: 168px;
    padding: 14px;
    background: #fff;
    border: 1px solid var(--strk-2);
    border-radius: var(--radius);
    text-align: center;
}
.msg-qr img { width: 100%; border-radius: 6px; }
.msg-qr figcaption { margin-top: 10px; font-size: 13px; color: var(--gray-2); }

.msg-form {
    padding: 44px;
    background: var(--bg1);
    border-radius: var(--radius);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.form-field { display: block; margin-bottom: 24px; }
.form-field > span {
    display: block;
    margin-bottom: 10px;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--ink-2);
}
.form-field > span i { color: #d43; font-style: normal; margin-left: 2px; }
.form-field input, .form-field textarea {
    width: 100%;
    border: 0;
    border-bottom: 1px solid var(--strk);
    background: transparent;
    padding: 10px 2px;
    font-family: var(--font);
    font-size: 15px;
    color: var(--ink);
    outline: 0;
    border-radius: 0;
    transition: border-color .25s ease;
    resize: vertical;
}
.form-field input:focus, .form-field textarea:focus { border-bottom-color: var(--brand); }
.msg-form .btn { width: 100%; margin-top: 8px; }

/* ============================================================
 * 视频
 * ============================================================ */
.v-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.video-card {
    position: relative;
    display: block;
    width: 100%;
    padding: 0;
    border: 1px solid var(--strk-2);
    border-radius: var(--radius);
    background: #fff;
    overflow: hidden;
    text-align: left;
    transition: all .35s ease;
}
.video-card:hover { border-color: var(--strk); box-shadow: var(--shadow-2); transform: translateY(-6px); }
.video-card figure {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #000;
}
.video-card figure img {
    width: 100%; height: 100%;
    object-fit: cover;
    opacity: .92;
    transition: transform .6s ease, opacity .3s ease;
}
.video-card:hover figure img { transform: scale(1.04); opacity: 1; }
.play-badge {
    position: absolute;
    left: 50%; top: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 66px; height: 66px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.92);
    color: var(--ink);
    transition: all .3s ease;
}
.play-badge svg { width: 24px; height: 24px; margin-left: 3px; }
.video-card:hover .play-badge { background: var(--brand); color: #fff; transform: translate(-50%, -50%) scale(1.08); }
.video-name {
    display: block;
    padding: 18px 22px;
    font-size: 15px;
    font-weight: 600;
    color: var(--ink);
}

/* ============================================================
 * 页脚（白底简洁 · jdsol 风）
 * ============================================================ */
.site-footer {
    margin-top: 0;
    border-top: 1px solid var(--strk-2);
    background: #fff;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 2fr;
    gap: 64px;
    padding: 72px 32px 56px;
}
.f-brand .f-logo { height: 30px; width: auto; }
.f-slogan { margin-top: 16px; font-size: 13.5px; color: var(--gray-2); }
.f-info { margin-top: 24px; display: grid; gap: 10px; }
.f-info p { font-size: 13.5px; color: var(--gray); line-height: 1.7; }
.f-info b { font-weight: 600; color: var(--ink-2); margin-right: 10px; }
.f-info a:hover { color: var(--brand); }
.f-social { display: flex; gap: 12px; margin-top: 40px; }
.soc {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    border: 1px solid var(--strk);
    border-radius: 50%;
    color: var(--gray);
    cursor: pointer;
    transition: all .3s ease;
}
.soc:hover { border-color: var(--brand); color: var(--brand); }
.soc svg { width: 18px; height: 18px; }
.qr-pop {
    position: absolute;
    left: 50%; bottom: calc(100% + 14px);
    transform: translateX(-50%) translateY(6px);
    /* 绝对定位收缩宽度会被 40px 圆钮的包含块卡死，配全局 img max-width:100% 会把二维码压成细长条 */
    width: max-content;
    padding: 8px;
    background: #fff;
    border: 1px solid var(--strk-2);
    border-radius: 10px;
    box-shadow: var(--shadow-2);
    opacity: 0;
    visibility: hidden;
    transition: all .28s ease;
    z-index: 5;
}
.qr-pop img { width: 132px; height: 132px; max-width: none; object-fit: contain; }
.soc:hover .qr-pop, .soc:focus .qr-pop { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }

.f-cols {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}
.f-cols dt {
    margin-bottom: 18px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--ink);
}
.f-cols dd { margin-bottom: 12px; }
.f-cols a { font-size: 13.5px; color: var(--gray-2); }
.f-cols a:hover { color: var(--brand); }

.f-bottom { border-top: 1px solid var(--strk-2); }
.f-bottom-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding-top: 22px;
    padding-bottom: 22px;
    font-size: 12.5px;
    color: var(--gray-2);
}
.f-bottom a:hover { color: var(--brand); }

/* ============================================================
 * 浮动工具条 / 弹窗 / Toast
 * ============================================================ */
.float-rail {
    position: fixed;
    right: 22px; bottom: 26px;
    z-index: 90;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.rail-item {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px; height: 48px;
    border: 1px solid var(--strk);
    border-radius: 50%;
    background: #fff;
    color: var(--ink-2);
    cursor: pointer;
    box-shadow: var(--shadow-1);
    transition: all .3s ease;
}
.rail-item:hover { border-color: var(--brand); color: var(--brand); }
.rail-item svg { width: 20px; height: 20px; }
.rail-pop-box {
    position: absolute;
    right: calc(100% + 14px);
    top: 50%;
    transform: translateY(-50%) translateX(8px);
    padding: 14px 20px;
    background: #fff;
    border: 1px solid var(--strk-2);
    border-radius: 12px;
    box-shadow: var(--shadow-2);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all .28s ease;
    text-align: left;
}
.rail-pop:hover .rail-pop-box, .rail-pop:focus .rail-pop-box { opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0); }
.rail-pop-box strong { display: block; font-size: 15px; color: var(--ink); }
.rail-pop-box em { display: block; margin-top: 2px; font-size: 12px; font-style: normal; color: var(--gray-2); }
/* 二维码弹层固定按图片宽收缩，禁止被包含块压缩导致图片变形 */
.rail-pop-qr { width: max-content; }
.rail-pop-qr img { display: block; width: 128px; height: 128px; max-width: none; object-fit: contain; margin: 0 auto 6px; }
.rail-pop-qr em { text-align: center; }

.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4vw;
}
.modal-mask {
    position: absolute;
    inset: 0;
    background: rgba(17, 17, 17, 0.82);
    cursor: pointer;
}
.modal-body {
    position: relative;
    width: min(960px, 100%);
    max-height: 90vh;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    animation: modal-in .3s ease;
}
@keyframes modal-in {
    from { opacity: 0; transform: translateY(24px) scale(.98); }
    to { opacity: 1; transform: none; }
}
.modal-body video { display: block; width: 100%; max-height: 82vh; }
.modal-body.modal-lightbox { background: transparent; display: flex; align-items: center; justify-content: center; }
.modal-body.modal-lightbox img { max-width: 100%; max-height: 86vh; border-radius: 8px; }
.modal-close {
    position: absolute;
    right: 12px; top: 12px;
    z-index: 2;
    width: 40px; height: 40px;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
    font-size: 22px;
    line-height: 1;
    transition: background .25s ease;
}
.modal-close:hover { background: rgba(255, 255, 255, 0.3); }

.toast {
    position: fixed;
    left: 50%; bottom: 44px;
    transform: translateX(-50%) translateY(16px);
    z-index: 1100;
    max-width: min(92vw, 480px);
    padding: 14px 26px;
    border-radius: 100px;
    background: rgba(17, 17, 17, 0.92);
    color: #fff;
    font-size: 14px;
    text-align: center;
    opacity: 0;
    transition: all .3s ease;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.ok { background: var(--brand); }

/* ============================================================
 * 进场动画
 * ============================================================ */
.reveal {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity .7s ease var(--d, 0ms), transform .7s cubic-bezier(.22, .8, .3, 1) var(--d, 0ms);
}
.reveal.in { opacity: 1; transform: none; }
.reveal.no-io { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
    html { scroll-behavior: auto; }
}

/* ============================================================
 * 响应式
 * ============================================================ */
@media (max-width: 1200px) {
    .gnav > ul > li > a { padding: 0 12px; font-size: 13px; }
    .hd-pill { padding: 0 14px; }
    .logo { gap: 10px; }
    .logo img { height: 26px; }
    .logo-text { font-size: 12px; }
    .logo-text span { font-size: 9.5px; }
    .p-grid, .cert-grid { grid-template-columns: repeat(3, 1fr); }
    .contact-grid { grid-template-columns: repeat(2, 1fr); }
}

/* 紧凑档：双语全称 logo 变宽后，961–1140px 区间头部会横向溢出，整体收间距 */
@media (max-width: 1140px) {
    .header-inner { gap: 18px; }
    .gnav > ul { gap: 2px; }
    .gnav > ul > li > a { padding: 0 9px; }
    .logo { gap: 8px; }
    .logo-text { font-size: 11px; }
    .logo-text span { font-size: 9px; letter-spacing: .08em; }
    .hd-pill { padding: 0 12px; }
}

@media (max-width: 960px) {
    .gnav, .hd-hide-m { display: none; }
    .nav-toggle { display: inline-flex; }
    .sec { padding: 80px 0; }
    .wrap { padding: 0 20px; }
    .footer-grid { grid-template-columns: 1fr; gap: 48px; padding: 56px 20px 44px; }
    .f-cols { grid-template-columns: repeat(2, 1fr); }
    .page-hero { min-height: 380px; padding-bottom: 120px; }
    .p-grid, .cert-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
    .detail-grid { grid-template-columns: 1fr; gap: 36px; margin-bottom: 64px; }
    .about-grid { grid-template-columns: 1fr; gap: 36px; }
    .stat-list { grid-template-columns: repeat(2, 1fr); margin: 64px 0; }
    .support-grid { grid-template-columns: 1fr; }
    .msg-grid { grid-template-columns: 1fr; gap: 40px; }
    .v-grid { grid-template-columns: 1fr; }
    .sec-head-row { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
    body { font-size: 14px; }
    .header-inner { gap: 14px; }
    .hd-contact { display: none; }
    .logo { gap: 8px; }
    .logo img { height: 24px; }
    .logo-text { font-size: 10.5px; letter-spacing: .06em; }
    .logo-text span { font-size: 8.5px; letter-spacing: .1em; }
    .search-form { height: 68px; }
    .p-grid, .cert-grid, .news-grid, .contact-grid, .form-row { grid-template-columns: 1fr; }
    .news-row { gap: 16px; padding: 20px 4px; }
    .news-row .nr-fig { display: none; }
    .news-row time { width: auto; }
    .news-row p { display: none; }
    .msg-form { padding: 28px 20px; }
    .faq-a { padding-left: 8px; }
    .dl-item { flex-wrap: wrap; }
    .article-pn { grid-template-columns: 1fr; }
    .pn.next { text-align: left; }
    .float-rail { right: 14px; bottom: 16px; }
}

/* ============================================================
 * v2.2.2 全站 UI 审计修复
 * ============================================================ */
/* 窄屏头部：公司名 + 英文全称都显示；logo 改网格布局，英文全称独占第二行
   （横跨 logo+中文整行下方，避免与 logo 图重叠），同步压缩间距防溢出 */
@media (max-width: 560px) {
    .site-header .wrap { padding: 0 clamp(11px, 3vw, 14px); }
    .header-inner { gap: 8px; }
    .logo {
        display: grid;
        grid-template-columns: auto auto;
        align-items: center;
        gap: 3px 5px;
    }
    .logo img { height: clamp(17px, 5vw, 20px); grid-area: 1 / 1; }
    .logo-text {
        display: contents;
        font-size: clamp(9.5px, 2.8vw, 11px);
        letter-spacing: .04em;
    }
    .logo-text b { grid-area: 1 / 2; }
    .logo-text span {
        grid-area: 2 / 1 / 3 / 3;
        font-size: clamp(6.5px, 2.3vw, 9px);
        letter-spacing: .06em;
    }
    .header-tools { gap: 4px; }
    .lang-wrap .hd-pill,
    .site-header.scrolled .lang-wrap .hd-pill {
        border-color: transparent;
        padding: 0 4px;
        gap: 4px;
        font-size: clamp(11px, 3vw, 12px);
    }
    .lang-wrap .hd-pill svg { width: 11px; height: 11px; }
    .icon-btn { width: clamp(28px, 8.6vw, 34px); height: clamp(28px, 8.6vw, 34px); }
    .icon-btn svg { width: 18px; height: 18px; }
}

/* 极窄屏（<340px）兜底：再压一档保证汉堡按钮完整可见可点 */
@media (max-width: 340px) {
    .site-header .wrap { padding: 0 10px; }
    .header-inner { gap: 6px; }
    .logo img { height: 15px; }
    .logo-text { font-size: 9px; }
    .logo-text span { font-size: 6.5px; }
    .lang-wrap .hd-pill { font-size: 10.5px; }
    .icon-btn { width: 26px; height: 26px; }
    .icon-btn svg { width: 15px; height: 15px; }
}