/* ============================================================
   上海索恒信息技术有限公司官网 样式
   纯自研无外部依赖，中文企业站设计（深蓝科技风）
   ============================================================ */

:root {
    --primary: #1157b8;
    --primary-dark: #0d4794;
    --primary-light: #3d7ede;
    --accent: #35b3f7;
    --navy: #0b2740;
    --navy-2: #103a66;
    --bg-alt: #f5f8fc;
    --line: #e6ebf3;
    --text: #2f3742;
    --muted: #6d7887;
    --radius: 10px;
    --shadow: 0 6px 24px rgba(13, 55, 110, 0.08);
    --shadow-lg: 0 14px 40px rgba(13, 55, 110, 0.16);
}

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

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

body {
    font-family: "PingFang SC", "Microsoft YaHei", "微软雅黑", "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    color: var(--text);
    background: #fff;
    line-height: 1.7;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); }
ul, ol { list-style: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 10px 26px;
    border-radius: 6px;
    border: 1px solid transparent;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all .22s;
    line-height: 1.5;
    white-space: nowrap;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: #fff;
    box-shadow: 0 6px 16px rgba(17, 87, 184, 0.28);
}
.btn-primary:hover { color: #fff; transform: translateY(-1px); box-shadow: 0 10px 22px rgba(17, 87, 184, 0.34); }
.btn-ghost { border-color: var(--primary); color: var(--primary); background: transparent; }
.btn-ghost:hover { background: var(--primary); color: #fff; }
.btn-light { background: #fff; color: var(--primary); box-shadow: 0 6px 16px rgba(4, 22, 48, 0.25); }
.btn-light:hover { color: var(--primary-dark); transform: translateY(-1px); }
.btn-lg { padding: 13px 34px; font-size: 16px; }
.btn-block { display: flex; width: 100%; }

/* ---------- 顶部：沉浸式单行导航（透明覆盖，滚动转白） ---------- */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 90;
    transition: background .35s ease, box-shadow .35s ease;
}
/* 透明态顶部渐变暗场，保证白字在任何画面上可读 */
.site-header::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(6, 20, 40, 0.62), rgba(6, 20, 40, 0));
    opacity: 1;
    transition: opacity .35s ease;
    pointer-events: none;
}
.site-header.is-scrolled { background: #fff; box-shadow: 0 6px 24px rgba(10, 35, 70, 0.1); }
.site-header.is-scrolled::before { opacity: 0; }
.site-header.nav-open { background: #fff; }
.site-header.nav-open::before { opacity: 0; }

.header-inner {
    position: relative;
    display: flex;
    align-items: center;
    gap: 26px;
    min-height: 80px;
    transition: min-height .3s ease;
}
.site-header.is-scrolled .header-inner { min-height: 66px; }

.logo { flex: none; display: inline-flex; align-items: center; }
.logo img { height: 48px; width: auto; transition: height .3s ease, filter .35s ease, opacity .35s ease; }
/* 透明态：logo 反白剪影，适配任意客户 logo */
.site-header:not(.is-scrolled):not(.nav-open) .logo img { filter: brightness(0) invert(1); opacity: .96; }
.site-header.is-scrolled .logo img { height: 42px; }

.main-nav { margin-left: auto; }
.main-nav ul { display: flex; align-items: center; }
.main-nav li { position: relative; }
.main-nav li > a {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 12px 17px;
    color: rgba(255, 255, 255, 0.92);
    font-size: 15.5px;
    position: relative;
    transition: color .3s ease;
}
/* 悬停/选中下划线生长动效 */
.main-nav li > a::after {
    content: "";
    position: absolute;
    left: 17px; right: 17px; bottom: 5px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: center;
    transition: transform .28s ease;
}
.main-nav li > a:hover { color: #fff; }
.main-nav li > a:hover::after { transform: scaleX(1); }
.main-nav li.active > a { color: #fff; font-weight: 600; }
.main-nav li.active > a::after { transform: scaleX(1); }
.site-header.is-scrolled .main-nav li > a { color: #3d4a5c; }
.site-header.is-scrolled .main-nav li > a:hover { color: var(--primary); }
.site-header.is-scrolled .main-nav li.active > a { color: var(--primary); }
.main-nav .caret {
    width: 0; height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid rgba(255, 255, 255, 0.8);
    transition: transform .2s;
}
.site-header.is-scrolled .main-nav .caret { border-top-color: #9aa7b6; }
.main-nav li.has-sub:hover .caret { transform: rotate(180deg); }

/* 热线胶囊 */
.header-tel {
    flex: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 18px;
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: 30px;
    color: #fff;
    font-size: 14.5px;
    font-family: Consolas, Menlo, monospace;
    letter-spacing: .5px;
    transition: all .3s ease;
}
.header-tel svg { width: 15px; height: 15px; flex: none; }
.header-tel:hover { background: rgba(255, 255, 255, 0.14); color: #fff; }
.site-header.is-scrolled .header-tel { border-color: #cfe0f5; color: var(--primary); background: #f4f8fd; }
.site-header.is-scrolled .header-tel:hover { border-color: var(--primary); }

.nav-toggle { display: none; background: none; border: 0; width: 40px; height: 40px; cursor: pointer; padding: 8px; margin-left: 4px; }
.nav-toggle span { display: block; height: 2px; background: #fff; margin: 5px 0; border-radius: 2px; transition: all .25s; }
.site-header.is-scrolled .nav-toggle span, .site-header.nav-open .nav-toggle span { background: var(--navy); }

.sub-panel {
    position: absolute;
    top: 100%; left: 12px;
    min-width: 228px;
    background: #fff;
    border-radius: 0 0 8px 8px;
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all .22s;
    z-index: 70;
}
.main-nav li.has-sub:hover .sub-panel { opacity: 1; visibility: visible; transform: translateY(0); }
.sub-panel a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    color: #33465e;
    font-size: 14.5px;
}
.sub-panel a:hover { background: #f1f6fd; color: var(--primary); }
.sub-panel a svg { color: var(--primary); flex: none; }

.nav-mask { display: none; position: fixed; inset: 0; background: rgba(8, 25, 48, 0.45); z-index: 40; }

/* ---------- Hero ---------- */
.hero { position: relative; height: 520px; overflow: hidden; background: var(--navy); }
.hero-slides, .hero-slide { position: absolute; inset: 0; }
.hero-slide { opacity: 0; visibility: hidden; transition: opacity .9s ease, visibility .9s; }
.hero-slide.is-active { opacity: 1; visibility: visible; z-index: 2; }
.hero-bg {
    position: absolute; inset: 0;
    background-size: cover;
    background-position: center;
    transform: scale(1.06);
    transition: transform 6s ease;
}
.hero-slide.is-active .hero-bg { transform: scale(1); }
.hero-slide::after {
    content: "";
    position: absolute; inset: 0;
    background: linear-gradient(90deg, rgba(6, 25, 52, 0.84) 8%, rgba(6, 25, 52, 0.45) 52%, rgba(6, 25, 52, 0.06) 88%);
}
.hero-inner { position: relative; z-index: 3; height: 100%; display: flex; align-items: center; }
.hero-copy { max-width: 640px; padding: 30px 0; }
.hero-copy h2 {
    color: #fff;
    font-size: 40px;
    line-height: 1.3;
    font-weight: 700;
    letter-spacing: 1px;
    text-shadow: 0 2px 14px rgba(0, 0, 0, 0.35);
}
.hero-copy p {
    color: rgba(255, 255, 255, 0.88);
    font-size: 17px;
    margin: 16px 0 28px;
    letter-spacing: 0.5px;
}
.hero-dots {
    position: absolute;
    bottom: 26px; left: 0; right: 0;
    display: flex;
    justify-content: center;
    gap: 10px;
    z-index: 5;
}
.hero-dots button {
    width: 30px; height: 4px;
    border: 0; border-radius: 3px;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all .25s;
}
.hero-dots button.on { background: var(--accent); width: 44px; }
.hero-arrow {
    position: absolute;
    top: 50%; transform: translateY(-50%);
    z-index: 5;
    width: 46px; height: 46px;
    border-radius: 50%;
    border: 0;
    background: rgba(255, 255, 255, 0.16);
    color: #fff;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background .2s;
    backdrop-filter: blur(2px);
}
.hero-arrow:hover { background: rgba(255, 255, 255, 0.3); }
.hero-prev { left: 26px; }
.hero-next { right: 26px; }

.hero-fallback {
    background:
        radial-gradient(ellipse 900px 480px at 82% 18%, rgba(53, 179, 247, 0.28), transparent 60%),
        radial-gradient(ellipse 700px 420px at 10% 92%, rgba(61, 126, 222, 0.35), transparent 65%),
        linear-gradient(120deg, #081d38, #0d3a6b 55%, #1157b8);
}

/* ---------- 区块通用 ---------- */
.section { padding: 74px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 46px; }
.section-eyebrow {
    display: block;
    color: var(--accent);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 4px;
    margin-bottom: 8px;
    text-transform: uppercase;
}
.section-head h2 { font-size: 32px; color: #1b2836; font-weight: 700; letter-spacing: 1px; }
.section-head p { color: var(--muted); margin-top: 12px; font-size: 15px; }
.section-more { text-align: center; margin-top: 40px; }
.block-title { font-size: 26px; color: #1b2836; margin-bottom: 26px; padding-left: 14px; border-left: 4px solid var(--primary); line-height: 1.35; }

/* ---------- 首页-产品分类 ---------- */
.cat-strip { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; margin-bottom: 42px; }
.cat-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 26px 20px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    transition: all .25s;
    color: var(--text);
}
.cat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
    color: var(--text);
}
.cat-icon {
    width: 66px; height: 66px;
    border-radius: 18px;
    background: linear-gradient(145deg, #eaf3fe, #d9e9fc);
    color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    transition: all .25s;
}
.cat-card:hover .cat-icon { background: linear-gradient(145deg, var(--primary-light), var(--primary)); color: #fff; }
.cat-name { font-size: 17px; font-weight: 700; color: #1b2836; }
.cat-desc { font-size: 12.5px; color: var(--muted); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- 产品卡片 ---------- */
.p-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.p-grid-4 { grid-template-columns: repeat(4, 1fr); }
.p-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all .25s;
    color: var(--text);
}
.p-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; color: var(--text); }
.p-thumb {
    aspect-ratio: 4 / 3;
    background: #f6f9fd;
    overflow: hidden;
}
.p-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.p-card:hover .p-thumb img { transform: scale(1.05); }
.p-info { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 7px; flex: 1; }
.p-info h3 {
    font-size: 15.5px;
    color: #1b2836;
    font-weight: 600;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.p-card:hover .p-info h3 { color: var(--primary); }
.p-model {
    align-self: flex-start;
    font-size: 12px;
    color: var(--primary);
    background: #ecf4fd;
    border-radius: 4px;
    padding: 2px 9px;
    font-family: Consolas, Menlo, monospace;
}
.p-info p {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.home-products { margin-bottom: 8px; }

/* ---------- 方案卡片 ---------- */
.s-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.s-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all .25s;
    color: var(--text);
}
.s-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; color: var(--text); }
.s-cover { aspect-ratio: 16 / 9; overflow: hidden; background: #eef4fb; }
.s-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.s-card:hover .s-cover img { transform: scale(1.05); }
.s-body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.s-body h3 { font-size: 17.5px; color: #1b2836; font-weight: 700; line-height: 1.45; }
.s-card:hover .s-body h3 { color: var(--primary); }
.s-body p { font-size: 13.5px; color: var(--muted); line-height: 1.75; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; flex: 1; }
.s-more { display: inline-flex; align-items: center; gap: 5px; color: var(--primary); font-size: 13.5px; font-weight: 600; }
.s-more svg { transition: transform .2s; }
.s-card:hover .s-more svg { transform: translateX(4px); }

/* ---------- 关于我们 ---------- */
.about-layout { display: grid; grid-template-columns: 46% 1fr; gap: 52px; align-items: center; }
.about-media { position: relative; }
.about-media > img { border-radius: 12px; box-shadow: var(--shadow-lg); width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.about-badge {
    position: absolute;
    left: -18px; bottom: -24px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
    color: #fff;
    border-radius: 12px;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-lg);
}
.about-badge strong { font-size: 40px; font-weight: 700; line-height: 1; }
.about-badge strong em { font-style: normal; color: var(--accent); }
.about-badge span { font-size: 13.5px; line-height: 1.5; opacity: .95; }
.about-copy .section-eyebrow { margin-bottom: 6px; }
.about-copy h2 { font-size: 30px; color: #1b2836; margin-bottom: 16px; }
.about-text { color: #4a5563; line-height: 2; text-align: justify; }
.about-nums { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 28px 0; }
.about-nums li { text-align: center; padding: 14px 6px; background: var(--bg-alt); border-radius: 8px; }
.about-nums strong { display: block; font-size: 27px; font-weight: 700; color: var(--primary); line-height: 1.2; }
.about-nums strong em { font-style: normal; color: var(--accent); }
.about-nums span { font-size: 12.5px; color: var(--muted); }
.about-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 案例 ---------- */
.c-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.c-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all .25s;
    color: var(--text);
}
.c-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; color: var(--text); }
.c-cover { position: relative; aspect-ratio: 16 / 9.5; overflow: hidden; background: #eef4fb; }
.c-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.c-card:hover .c-cover img { transform: scale(1.05); }
.c-industry {
    position: absolute;
    top: 12px; left: 12px;
    background: rgba(17, 87, 184, 0.92);
    color: #fff;
    font-size: 12px;
    padding: 3px 12px;
    border-radius: 20px;
    letter-spacing: 1px;
}
.c-industry-inline { position: static; display: inline-block; margin-bottom: 10px; }
.c-body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.c-body h3 {
    font-size: 16px;
    color: #1b2836;
    font-weight: 600;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.c-card:hover .c-body h3 { color: var(--primary); }
.c-body p { font-size: 13px; color: var(--muted); line-height: 1.75; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- 新闻 ---------- */
.n-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.n-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all .25s;
    color: var(--text);
}
.n-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; color: var(--text); }
.n-cover { aspect-ratio: 16 / 9; overflow: hidden; background: #eef4fb; }
.n-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.n-card:hover .n-cover img { transform: scale(1.05); }
.n-body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 9px; flex: 1; }
.n-meta { display: flex; align-items: center; justify-content: space-between; font-size: 12px; color: var(--muted); }
.n-meta time { font-family: Consolas, Menlo, monospace; }
.n-tag {
    color: var(--primary);
    background: #ecf4fd;
    border-radius: 4px;
    padding: 2px 9px;
    font-size: 12px;
}
.n-body h3 {
    font-size: 15.5px;
    color: #1b2836;
    font-weight: 600;
    line-height: 1.55;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.n-card:hover .n-body h3 { color: var(--primary); }
.n-body p { font-size: 13px; color: var(--muted); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* 新闻列表行 */
.n-list { display: flex; flex-direction: column; gap: 16px; }
.n-row {
    display: grid;
    grid-template-columns: 264px 1fr 30px;
    gap: 24px;
    align-items: center;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 16px;
    transition: all .25s;
    color: var(--text);
}
.n-row:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: transparent; color: var(--text); }
.n-row .n-cover { border-radius: 8px; aspect-ratio: 16 / 9.6; }
.n-row h3 { font-size: 17px; color: #1b2836; font-weight: 600; margin: 6px 0 8px; line-height: 1.5; }
.n-row:hover h3 { color: var(--primary); }
.n-row p { font-size: 13.5px; color: var(--muted); line-height: 1.75; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.n-arrow { color: #c2ccda; transition: all .2s; }
.n-row:hover .n-arrow { color: var(--primary); transform: translateX(4px); }

.tab-bar { display: flex; justify-content: center; gap: 12px; margin-bottom: 34px; flex-wrap: wrap; }
.tab {
    padding: 9px 30px;
    border-radius: 30px;
    border: 1px solid var(--line);
    background: #fff;
    color: #4a5563;
    font-size: 14.5px;
    transition: all .2s;
}
.tab:hover { color: var(--primary); border-color: var(--primary); }
.tab.active { background: linear-gradient(135deg, var(--primary-light), var(--primary)); border-color: transparent; color: #fff; box-shadow: 0 5px 14px rgba(17, 87, 184, 0.3); }

/* ---------- 合作伙伴 ---------- */
.partner-chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; max-width: 940px; margin: 0 auto; }
.chip {
    border: 1px solid var(--line);
    background: #fff;
    color: #55616f;
    border-radius: 8px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all .22s;
}
.chip:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-3px); box-shadow: var(--shadow); }

/* ---------- CTA ---------- */
.cta-band {
    background:
        radial-gradient(ellipse 700px 320px at 88% 12%, rgba(53, 179, 247, 0.25), transparent 60%),
        linear-gradient(120deg, #0a2244, #0e4180);
    padding: 52px 0;
}
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-copy h2 { color: #fff; font-size: 27px; font-weight: 700; }
.cta-copy p { color: rgba(255, 255, 255, 0.75); margin-top: 8px; font-size: 15px; }
.cta-actions { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.cta-tel { color: rgba(255, 255, 255, 0.85); font-size: 15px; }
.cta-tel:hover { color: #fff; }

/* ---------- 内页头 ---------- */
.page-hero {
    background:
        radial-gradient(ellipse 800px 300px at 85% 20%, rgba(53, 179, 247, 0.3), transparent 60%),
        linear-gradient(115deg, #081d38, #0d3a6b 60%, #11498f);
    padding: 138px 0 50px;
}
.page-hero h1 { color: #fff; font-size: 30px; font-weight: 700; letter-spacing: 2px; margin-bottom: 12px; }
.page-hero-tight { padding: 118px 0 36px; }
.crumbs { color: rgba(255, 255, 255, 0.62); font-size: 13.5px; }
.crumbs a { color: rgba(255, 255, 255, 0.8); }
.crumbs a:hover { color: #fff; }
.crumbs em { font-style: normal; margin: 0 8px; color: rgba(255, 255, 255, 0.4); }
.crumbs span { color: #fff; }

/* ---------- 列表页布局 ---------- */
.list-section { padding-top: 54px; }
.list-layout { display: grid; grid-template-columns: 262px 1fr; gap: 30px; align-items: start; }
.list-side { display: flex; flex-direction: column; gap: 22px; position: sticky; top: 16px; }

.side-nav { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.side-nav h3 {
    font-size: 16.5px;
    color: #1b2836;
    padding: 15px 20px;
    border-bottom: 1px solid var(--line);
    background: var(--bg-alt);
    font-weight: 700;
}
.side-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    color: #4a5563;
    font-size: 14.5px;
    border-left: 3px solid transparent;
    transition: all .18s;
}
.side-link:hover { background: #f6f9fd; color: var(--primary); }
.side-link.active {
    border-left-color: var(--primary);
    background: #eef5fd;
    color: var(--primary);
    font-weight: 600;
}
.side-link em { font-style: normal; font-size: 12.5px; color: #9aa7b6; }
.side-link-flow { display: block; border-left: 0; border-bottom: 1px dashed var(--line); }
.side-link-flow:last-child { border-bottom: 0; }
.side-link-flow span {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.side-link-flow em { font-style: normal; font-size: 12px; color: #9aa7b6; font-family: Consolas, Menlo, monospace; }

.side-card {
    background: linear-gradient(150deg, var(--navy-2), var(--navy));
    border-radius: var(--radius);
    padding: 26px 24px;
    color: rgba(255, 255, 255, 0.82);
}
.side-card h4 { color: #fff; font-size: 17px; margin-bottom: 10px; }
.side-card p { font-size: 13.5px; line-height: 1.8; }
.side-tel { margin: 12px 0; }
.side-tel a { color: #7cc4ff; font-size: 21px; font-weight: 700; font-family: Consolas, Menlo, monospace; }
.side-card .btn-primary { background: #fff; color: var(--primary); box-shadow: none; margin-top: 14px; }
.side-card .btn-primary:hover { background: #eaf3fe; }

.search-tip { background: #eef5fd; border: 1px solid #d4e5fa; border-radius: 8px; padding: 12px 18px; font-size: 14px; color: #41536a; margin-bottom: 18px; }
.cat-intro { color: var(--muted); font-size: 14px; border-left: 3px solid var(--accent); padding-left: 12px; margin-bottom: 22px; line-height: 1.8; }

.empty-block { text-align: center; padding: 70px 20px; color: var(--muted); background: #fff; border: 1px dashed #d5dde8; border-radius: var(--radius); }
.empty-block p { font-size: 15px; margin-bottom: 16px; }

/* ---------- 分页 ---------- */
.pager { margin-top: 40px; display: flex; justify-content: center; }
.pagination { display: flex; gap: 7px; flex-wrap: wrap; justify-content: center; }
.pagination li { list-style: none; }
.pagination li a, .pagination li span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 38px;
    height: 38px;
    padding: 0 12px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: #fff;
    color: #4a5563;
    font-size: 14px;
    transition: all .18s;
}
.pagination li a:hover { border-color: var(--primary); color: var(--primary); }
.pagination li.active span { background: var(--primary); border-color: var(--primary); color: #fff; }
.pagination li.disabled span { color: #b6c0cd; cursor: not-allowed; }

/* ---------- 产品详情 ---------- */
.pd-section { padding-bottom: 20px; }
.pd-layout { display: grid; grid-template-columns: 1.06fr 1fr; gap: 48px; align-items: start; }
.pd-gallery { position: sticky; top: 16px; }
.pd-main { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: #f6f9fd; }
.pd-main img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.pd-thumbs { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-top: 10px; }
.pd-thumbs button {
    border: 2px solid transparent;
    border-radius: 8px;
    overflow: hidden;
    background: #f6f9fd;
    padding: 0;
    cursor: pointer;
    transition: border-color .18s;
}
.pd-thumbs button.active { border-color: var(--primary); }
.pd-thumbs img { width: 100%; aspect-ratio: 1; object-fit: cover; }
.pd-info h1 { font-size: 26px; color: #1b2836; line-height: 1.45; margin-bottom: 12px; }
.pd-model {
    display: inline-block;
    font-size: 13.5px;
    color: var(--primary);
    background: #ecf4fd;
    border: 1px solid #d4e5fa;
    border-radius: 6px;
    padding: 4px 14px;
    margin-bottom: 16px;
    font-family: Consolas, Menlo, monospace;
}
.pd-summary { color: #4a5563; line-height: 1.95; text-align: justify; margin-bottom: 18px; }
.pd-perks { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 18px; margin-bottom: 26px; }
.pd-perks li { display: flex; align-items: center; gap: 8px; font-size: 14px; color: #41536a; }
.pd-perks svg { color: #21b573; flex: none; }
.pd-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.pd-spec-section { padding: 54px 0; }
.spec-wrap { overflow-x: auto; background: #fff; border-radius: var(--radius); border: 1px solid var(--line); }
.spec-table { width: 100%; border-collapse: collapse; min-width: 560px; }
.spec-table th, .spec-table td { padding: 13px 22px; border-bottom: 1px solid var(--line); font-size: 14.5px; }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
.spec-table th { width: 200px; text-align: left; color: #1b2836; font-weight: 600; background: #f8fafd; }
.spec-table td { color: #4a5563; }

.pd-body-section { padding-bottom: 30px; }
.pd-rich { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 34px; }
.pd-related-section { padding: 54px 0 64px; }

/* ---------- 文章（方案/案例/新闻详情） ---------- */
.article-section { padding-top: 50px; }
.article-layout { display: grid; grid-template-columns: 1fr 312px; gap: 36px; align-items: start; }
.article-main { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 38px; }
.article-head h1 { font-size: 25px; color: #1b2836; line-height: 1.5; margin-bottom: 12px; }
.article-meta { display: flex; align-items: center; gap: 16px; color: var(--muted); font-size: 13px; flex-wrap: wrap; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.article-lead {
    background: #f0f7ff;
    border-left: 4px solid var(--accent);
    border-radius: 0 8px 8px 0;
    padding: 14px 18px;
    color: #35507a;
    font-size: 14.5px;
    line-height: 1.9;
    margin: 20px 0 6px;
}
.article-cta {
    margin-top: 34px;
    background: linear-gradient(135deg, #f0f7ff, #e7f1fc);
    border: 1px solid #d4e5fa;
    border-radius: 10px;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
}
.article-cta p { color: #2c4569; font-size: 15px; font-weight: 600; }
.article-adjacent { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 30px; }
.adj-link {
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--text);
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow: hidden;
    transition: all .18s;
}
.adj-link:hover { border-color: var(--primary); color: var(--primary); }
.adj-link em { font-style: normal; font-size: 12px; color: var(--muted); }
.adj-link span { font-size: 13.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.adj-link.is-none { color: #b6c0cd; cursor: default; }
.adj-right { text-align: right; }
.article-side { display: flex; flex-direction: column; gap: 22px; position: sticky; top: 16px; }

/* ---------- 关于页 ---------- */
.about-page-section { padding-top: 54px; }
.about-page-layout { display: grid; grid-template-columns: 42% 1fr; gap: 44px; align-items: start; }
.about-page-media img { border-radius: 12px; box-shadow: var(--shadow-lg); width: 100%; position: sticky; top: 16px; }
.values-section { padding: 60px 0 70px; }
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-bottom: 40px; }
.value-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 30px 24px;
    transition: all .25s;
}
.value-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; }
.value-icon {
    width: 60px; height: 60px;
    border-radius: 16px;
    background: linear-gradient(145deg, #eaf3fe, #d9e9fc);
    color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 16px;
}
.value-item h3 { font-size: 17px; color: #1b2836; margin-bottom: 8px; }
.value-item p { font-size: 13.5px; color: var(--muted); line-height: 1.8; }
.about-nums-band { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 20px; margin: 0; }

/* ---------- 联系页 ---------- */
.contact-layout { display: grid; grid-template-columns: 382px 1fr; gap: 32px; align-items: start; }
.contact-cards { display: flex; flex-direction: column; gap: 16px; }
.contact-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 20px 22px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
    transition: all .2s;
}
.contact-card:hover { box-shadow: var(--shadow); }
.cc-icon {
    flex: none;
    width: 48px; height: 48px;
    border-radius: 12px;
    background: linear-gradient(145deg, #eaf3fe, #d9e9fc);
    color: var(--primary);
    display: flex; align-items: center; justify-content: center;
}
.cc-body h4 { font-size: 14.5px; color: #1b2836; margin-bottom: 4px; }
.cc-body p { font-size: 14px; color: #4a5563; line-height: 1.75; word-break: break-all; }
.cc-body a { font-family: Consolas, Menlo, monospace; font-weight: 600; font-size: 16px; }
.cc-qr img { width: 128px; height: 128px; object-fit: contain; border: 1px solid var(--line); border-radius: 8px; background: #fff; padding: 6px; }

.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 36px; }
.form-card h2 { font-size: 22px; color: #1b2836; margin-bottom: 6px; }
.form-sub { color: var(--muted); font-size: 13.5px; margin-bottom: 24px; }
.form-sub em { color: #e6483d; font-style: normal; }
.form-row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field { margin-bottom: 18px; }
.form-field label { display: block; font-size: 14px; color: #2f3742; font-weight: 600; margin-bottom: 7px; }
.form-field label i { color: #e6483d; font-style: normal; }
.form-field input, .form-field textarea {
    width: 100%;
    border: 1px solid #d8e0ea;
    border-radius: 6px;
    padding: 11px 14px;
    font-size: 14.5px;
    color: var(--text);
    font-family: inherit;
    background: #fbfdff;
    transition: all .18s;
    outline: none;
    -webkit-appearance: none;
}
.form-field input:focus, .form-field textarea:focus { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(17, 87, 184, 0.12); }
.form-field textarea { resize: vertical; min-height: 120px; }
.hp-field { position: absolute; left: -9999px; top: -9999px; }
.form-foot { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.form-msg { font-size: 14px; display: none; }
.form-msg.is-ok { display: inline; color: #189b5e; }
.form-msg.is-err { display: inline; color: #e6483d; }
#messageSubmit[disabled] { opacity: .65; cursor: not-allowed; }

/* ---------- 富文本 ---------- */
.rich { font-size: 15px; color: #3d4a5c; line-height: 2; word-break: break-word; }
.rich p { margin-bottom: 14px; text-align: justify; }
.rich img { max-width: 100%; height: auto; border-radius: 8px; margin: 10px auto; }
.rich h2, .rich h3, .rich h4 { color: #1b2836; margin: 26px 0 14px; font-weight: 700; }
.rich h2 { font-size: 21px; }
.rich h3 { font-size: 18px; }
.rich ul, .rich ol { padding-left: 24px; margin-bottom: 14px; }
.rich ul li { list-style: disc; margin-bottom: 6px; }
.rich ol li { list-style: decimal; margin-bottom: 6px; }
.rich strong { color: #1b2836; }
.rich table { width: 100%; border-collapse: collapse; margin: 14px 0; }
.rich table td, .rich table th { border: 1px solid var(--line); padding: 9px 14px; font-size: 14px; }
.rich blockquote {
    border-left: 4px solid var(--accent);
    background: #f0f7ff;
    padding: 12px 18px;
    margin: 14px 0;
    color: #35507a;
    border-radius: 0 8px 8px 0;
}

/* ---------- 悬浮侧栏 ---------- */
.float-sidebar {
    position: fixed;
    right: 16px; bottom: 90px;
    z-index: 90;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.fs-item {
    position: relative;
    width: 46px; height: 46px;
    border-radius: 10px;
    background: #fff;
    border: 1px solid var(--line);
    color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow);
    cursor: pointer;
    border: 0;
    transition: all .2s;
}
.fs-item:hover { background: var(--primary); color: #fff; }
.fs-item svg { width: 22px; height: 22px; }
.fs-tip {
    position: absolute;
    right: 56px; top: 50%;
    transform: translateY(-50%) translateX(6px);
    background: var(--navy);
    color: #fff;
    font-size: 13px;
    padding: 7px 13px;
    border-radius: 6px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all .2s;
    pointer-events: none;
}
.fs-item:hover .fs-tip { opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0); }
.fs-qr {
    position: absolute;
    right: 56px; top: 0;
    background: #fff;
    padding: 8px;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all .2s;
}
.fs-wechat:hover .fs-qr { opacity: 1; visibility: visible; }
.fs-qr img { width: 132px; height: 132px; object-fit: contain; }
.fs-top { opacity: 0; visibility: hidden; transition: all .25s; }
.fs-top.show { opacity: 1; visibility: visible; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--navy); color: rgba(255, 255, 255, 0.72); margin-top: 0; }
.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 0.9fr 0.9fr 1.3fr;
    gap: 40px;
    padding: 56px 0 42px;
}
.footer-logo { height: 42px; width: auto; filter: brightness(0) invert(1); margin-bottom: 16px; }
.footer-desc { font-size: 13.5px; line-height: 2; color: rgba(255, 255, 255, 0.6); max-width: 340px; }
.footer-qrcode { margin-top: 18px; display: flex; align-items: center; gap: 12px; }
.footer-qrcode img { width: 84px; height: 84px; object-fit: contain; background: #fff; border-radius: 8px; padding: 5px; }
.footer-qrcode span { font-size: 12.5px; color: rgba(255, 255, 255, 0.6); }
.footer-col h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 18px;
    padding-bottom: 10px;
    position: relative;
}
.footer-col h4::after {
    content: "";
    position: absolute;
    left: 0; bottom: 0;
    width: 26px; height: 2px;
    background: var(--accent);
}
.footer-col ul li { margin-bottom: 9px; }
.footer-col a { color: rgba(255, 255, 255, 0.62); font-size: 13.5px; }
.footer-col a:hover { color: #fff; }
.footer-contact li { font-size: 13.5px; line-height: 1.8; color: rgba(255, 255, 255, 0.62); }
.footer-contact a { color: rgba(255, 255, 255, 0.85); font-family: Consolas, Menlo, monospace; }
.footer-bar { border-top: 1px solid rgba(255, 255, 255, 0.09); padding: 17px 0; }
.footer-bar .container { display: flex; justify-content: center; gap: 22px; flex-wrap: wrap; font-size: 13px; color: rgba(255, 255, 255, 0.5); }
.footer-bar a { color: rgba(255, 255, 255, 0.5); }
.footer-bar a:hover { color: rgba(255, 255, 255, 0.85); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
    .cat-strip { grid-template-columns: repeat(3, 1fr); }
    .p-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .value-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 992px) {
    .section { padding: 52px 0; }
    .section-head h2 { font-size: 26px; }
    .hero { height: 430px; }
    .hero-copy h2 { font-size: 30px; }
    .hero-copy p { font-size: 15px; }
    .hero-arrow { display: none; }
    .header-tel { display: none; }

    /* 移动端导航 */
    .nav-toggle { display: block; }
    .main-nav {
        position: absolute;
        top: 100%; left: 0; right: 0;
        max-height: 0;
        overflow-y: auto;
        transition: max-height .3s ease;
        background: #fff;
        box-shadow: var(--shadow-lg);
    }
    .main-nav.nav-open { max-height: 72vh; }
    .main-nav > .container > ul { flex-direction: column; padding: 6px 0; }
    .main-nav li > a { color: #2f3742; padding: 13px 22px; font-size: 15px; }
    .main-nav li > a:hover { background: #f4f8fd; }
    .main-nav li.active > a::after { display: none; }
    .main-nav li.active > a { color: var(--primary); background: #eef5fd; }
    .main-nav .caret { border-top-color: #9aa7b6; }
    .main-nav li.has-sub.open .caret { transform: rotate(180deg); }
    .sub-panel {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border-radius: 0;
        background: #f7fafd;
        display: none;
        min-width: 0;
        padding: 4px 0;
    }
    .main-nav li.has-sub.open .sub-panel { display: block; }
    .sub-panel a { padding: 10px 34px; }

    .about-layout, .article-layout, .contact-layout, .about-page-layout { grid-template-columns: 1fr; }
    .about-media { max-width: 560px; }
    .about-badge { left: 12px; bottom: -20px; }
    .list-layout { grid-template-columns: 1fr; }
    .list-side { position: static; order: 2; }
    .list-main { order: 1; }
    .article-side { position: static; order: 2; }
    .article-main { order: 1; padding: 24px 22px; }
    .pd-layout { grid-template-columns: 1fr; gap: 28px; }
    .pd-gallery { position: static; }
    .contact-cards { flex-direction: row; flex-wrap: wrap; }
    .contact-card { flex: 1 1 44%; }
    .footer-main { grid-template-columns: 1fr 1fr; gap: 32px; padding: 44px 0 32px; }
}

@media (max-width: 640px) {
    body { font-size: 14.5px; }
    .header-inner { min-height: 60px; }
    .site-header.is-scrolled .header-inner { min-height: 54px; }
    .logo img { height: 40px; }
    .site-header.is-scrolled .logo img { height: 36px; }
    .hero { height: 400px; }
    .hero-copy h2 { font-size: 24px; }
    .section-head { margin-bottom: 32px; }
    .cat-strip { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .p-grid, .p-grid-4, .s-grid, .c-grid, .n-grid { grid-template-columns: 1fr; gap: 16px; }
    .about-nums { grid-template-columns: repeat(2, 1fr); }
    .value-grid { grid-template-columns: 1fr; }
    .n-row { grid-template-columns: 96px 1fr; }
    .n-row .n-arrow { display: none; }
    .n-row .n-cover { aspect-ratio: 1; border-radius: 8px; }
    .cta-inner { flex-direction: column; align-items: flex-start; }
    .cta-copy h2 { font-size: 22px; }
    .page-hero { padding: 108px 0 40px; }
    .page-hero-tight { padding: 94px 0 30px; }
    .page-hero h1 { font-size: 24px; }
    .article-adjacent { grid-template-columns: 1fr; }
    .contact-card { flex: 1 1 100%; }
    .form-card { padding: 24px 20px; }
    .form-row2 { grid-template-columns: 1fr; gap: 0; }
    .pd-perks { grid-template-columns: 1fr; }
    .pd-thumbs { grid-template-columns: repeat(4, 1fr); }
    .footer-main { grid-template-columns: 1fr; gap: 26px; }
    .float-sidebar { right: 10px; bottom: 70px; }
    .about-badge strong { font-size: 32px; }
    .spec-table th { width: 132px; }
}

/* ============================================================
   高级商务动效（v1.0.5+）
   吸顶收合导航 / 滚动入场 / 数字计数 / 卡片聚光 / 按钮流光 /
   合作伙伴无缝滚动 / 返回顶部进度环 / 内页流光
   ============================================================ */

/* clip 不产生滚动容器（不支持的老浏览器沿用 hidden） */
body { overflow-x: clip; }

/* ---------- Hero 文案：切换时逐行浮现 ---------- */
.hero-slide .hero-copy > * { opacity: 0; }
.hero-slide.is-active .hero-copy > * { animation: shHeroRise .9s cubic-bezier(.22, .61, .36, 1) forwards; }
.hero-slide.is-active .hero-copy > *:nth-child(1) { animation-delay: .2s; }
.hero-slide.is-active .hero-copy > *:nth-child(2) { animation-delay: .38s; }
.hero-slide.is-active .hero-copy > *:nth-child(3) { animation-delay: .56s; }
@keyframes shHeroRise {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------- 滚动入场（.has-reveal 由 JS 添加，无 JS 环境内容始终可见） ---------- */
.has-reveal [data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .85s cubic-bezier(.22, .61, .36, 1), transform .85s cubic-bezier(.22, .61, .36, 1);
    transition-delay: var(--rd, 0s);
}
.has-reveal [data-reveal="left"] { transform: translateX(-40px); }
.has-reveal [data-reveal="right"] { transform: translateX(40px); }
.has-reveal [data-reveal="zoom"] { transform: scale(.94); }
.has-reveal [data-reveal].revealed { opacity: 1; transform: none; }

/* ---------- 卡片鼠标聚光 ---------- */
.sh-glow { position: relative; }
.sh-glow::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0;
    pointer-events: none;
    transition: opacity .35s ease;
    background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 50%), rgba(53, 179, 247, 0.13), transparent 62%);
}
.sh-glow:hover::after { opacity: 1; }

/* ---------- 主按钮流光 ---------- */
.btn-primary { position: relative; overflow: hidden; }
.btn-primary::after {
    content: "";
    position: absolute;
    top: 0; bottom: 0; left: -140%;
    width: 56%;
    transform: skewX(-24deg);
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .38), transparent);
    transition: left .55s ease;
    pointer-events: none;
}
.btn-primary:hover::after { left: 160%; }

/* ---------- 合作伙伴无缝滚动 ---------- */
.marquee {
    overflow: hidden;
    padding: 6px 0;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
    mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee-track { display: flex; gap: 14px; width: max-content; animation: shMarquee 38s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes shMarquee { to { transform: translateX(calc(-50% - 7px)); } }

/* ---------- 返回顶部进度环 ---------- */
.fs-item.fs-top { overflow: visible; }
.fs-top .fs-ring {
    position: absolute;
    inset: -2px;
    width: calc(100% + 4px);
    height: calc(100% + 4px);
    transform: rotate(-90deg);
    pointer-events: none;
}
.fs-ring circle { fill: none; stroke-width: 2.5; }
.fs-ring .ring-bg { stroke: rgba(17, 87, 184, 0.14); }
.fs-ring .ring-bar { stroke: var(--primary); stroke-linecap: round; stroke-dasharray: 125.7; stroke-dashoffset: 125.7; transition: stroke-dashoffset .15s linear; }

/* ---------- 内页头 / CTA 流光 ---------- */
.page-hero { position: relative; overflow: hidden; }
.page-hero::after {
    content: "";
    position: absolute;
    width: 620px; height: 620px;
    border-radius: 50%;
    right: -160px; top: -300px;
    pointer-events: none;
    background: radial-gradient(circle, rgba(53, 179, 247, 0.20), transparent 62%);
    animation: shFloat 10s ease-in-out infinite alternate;
}
.page-hero .container { position: relative; z-index: 2; }
.cta-band { position: relative; overflow: hidden; }
.cta-band::after {
    content: "";
    position: absolute;
    width: 560px; height: 560px;
    border-radius: 50%;
    left: -180px; bottom: -320px;
    pointer-events: none;
    background: radial-gradient(circle, rgba(53, 179, 247, 0.18), transparent 62%);
    animation: shFloat 12s ease-in-out infinite alternate-reverse;
}
.cta-band .container { position: relative; z-index: 2; }
@keyframes shFloat {
    from { transform: translate(0, 0); }
    to { transform: translate(-80px, 50px); }
}

/* ---------- 数字滚动 ---------- */
[data-count] { font-variant-numeric: tabular-nums; }

/* ---------- 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .has-reveal [data-reveal] { opacity: 1 !important; transform: none !important; transition: none !important; }
    .hero-slide .hero-copy > * { opacity: 1 !important; animation: none !important; }
    .marquee-track { animation: none !important; flex-wrap: wrap; width: auto; }
    .btn-primary::after, .page-hero::after, .cta-band::after { display: none; }
    .hero-bg { transform: none !important; transition: none !important; }
    .fs-ring { display: none; }
}