/* ============================================================
   雪豹拓客 · AI获客系统 官网样式
   PC + 移动端自适应
   ============================================================ */

:root {
    --c-primary: #2563eb;
    --c-primary-dark: #1d4ed8;
    --c-cyan: #06b6d4;
    --c-grad: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
    --c-dark: #0b1220;
    --c-dark-2: #101b33;
    --c-text: #1e293b;
    --c-muted: #64748b;
    --c-line: #e2e8f0;
    --c-bg-gray: #f6f8fc;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, .05);
    --shadow-md: 0 10px 30px rgba(15, 23, 42, .09);
    --shadow-lg: 0 24px 60px rgba(15, 23, 42, .14);
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

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

body {
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.75;
    color: var(--c-text);
    background: #fff;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; border: 0; vertical-align: middle; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: inherit; }
.icon { vertical-align: middle; flex-shrink: 0; }

.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: 11px 22px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    white-space: nowrap;
    transition: all .22s ease;
}
.btn-primary {
    background: var(--c-grad);
    color: #fff;
    box-shadow: 0 8px 20px rgba(37, 99, 235, .28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(37, 99, 235, .36); }
.btn-outline {
    border-color: rgba(37, 99, 235, .45);
    color: var(--c-primary);
    background: #fff;
}
.btn-outline:hover { background: rgba(37, 99, 235, .06); border-color: var(--c-primary); }
.btn-ghost {
    border-color: rgba(255, 255, 255, .35);
    color: #fff;
    background: rgba(255, 255, 255, .06);
}
.btn-ghost:hover { background: rgba(255, 255, 255, .14); }
.btn-white { background: #fff; color: var(--c-primary); }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(0, 0, 0, .18); }
.btn-sm { padding: 8px 16px; font-size: 14px; }
.btn-lg { padding: 14px 30px; font-size: 16px; border-radius: 12px; }
.btn-block { width: 100%; }

/* ---------------- 顶部通告条 ---------------- */
.topbar {
    background: var(--c-dark);
    color: #cbd5e1;
    font-size: 13px;
    line-height: 1;
}
.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 38px;
}
.topbar-slogan { letter-spacing: .5px; color: #94a3b8; }
.topbar-right { display: flex; align-items: center; gap: 22px; }
.topbar-right a { display: inline-flex; align-items: center; gap: 6px; color: #cbd5e1; }
.topbar-right a:hover { color: #fff; }

/* ---------------- 头部导航 ---------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, .96);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid #eef2f7;
    transition: box-shadow .25s ease;
}
.site-header.scrolled { box-shadow: 0 8px 26px rgba(15, 23, 42, .08); }
.header-inner {
    display: flex;
    align-items: center;
    gap: 28px;
    height: 74px;
}
.logo { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark { width: 40px; height: 40px; }
.logo-img { max-height: 46px; width: auto; }
.logo-text { display: flex; flex-direction: column; line-height: 1.25; }
.logo-text strong { font-size: 19px; letter-spacing: 1px; color: #0f172a; }
.logo-text em {
    font-style: normal;
    font-size: 11px;
    color: var(--c-muted);
    letter-spacing: .5px;
    max-width: 200px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.main-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav-link {
    position: relative;
    padding: 8px 15px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    color: #334155;
}
.nav-link:hover { color: var(--c-primary); background: rgba(37, 99, 235, .06); }
.nav-link.active { color: var(--c-primary); font-weight: 600; }
.nav-link.active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 1px;
    transform: translateX(-50%);
    width: 22px;
    height: 3px;
    border-radius: 2px;
    background: var(--c-grad);
}
.header-cta { display: flex; align-items: center; gap: 16px; }
.header-phone { display: inline-flex; align-items: center; gap: 9px; }
.hp-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(37, 99, 235, .09);
    color: var(--c-primary);
}
.hp-text { display: flex; flex-direction: column; line-height: 1.25; }
.hp-text small { font-size: 11px; color: var(--c-muted); }
.hp-text strong { font-size: 15px; color: #0f172a; letter-spacing: .5px; }
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 42px;
    height: 42px;
    padding: 0 10px;
    border: 1px solid var(--c-line);
    border-radius: 10px;
    background: #fff;
}
.nav-toggle span { display: block; height: 2px; border-radius: 2px; background: #0f172a; transition: all .2s; }

/* ---------------- 移动端抽屉 ---------------- */
.mobile-drawer { position: fixed; inset: 0; z-index: 300; visibility: hidden; }
.mobile-drawer.open { visibility: visible; }
.drawer-mask {
    position: absolute;
    inset: 0;
    background: rgba(11, 18, 32, .55);
    opacity: 0;
    transition: opacity .25s ease;
}
.mobile-drawer.open .drawer-mask { opacity: 1; }
.drawer-panel {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 84vw);
    background: #fff;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform .28s ease;
    padding: 18px;
}
.mobile-drawer.open .drawer-panel { transform: none; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 14px; border-bottom: 1px solid var(--c-line); }
.drawer-title { font-weight: 700; font-size: 17px; }
.drawer-close { background: none; border: 0; color: var(--c-muted); padding: 6px; }
.drawer-nav { display: flex; flex-direction: column; padding: 14px 0; }
.drawer-link {
    padding: 13px 10px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 500;
    color: #334155;
}
.drawer-link.active { color: var(--c-primary); background: rgba(37, 99, 235, .07); font-weight: 600; }
.drawer-foot { margin-top: auto; display: flex; flex-direction: column; gap: 10px; }

/* ---------------- Hero ---------------- */
.hero { position: relative; background: var(--c-dark); color: #fff; overflow: hidden; }
.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(720px 360px at 82% 8%, rgba(37, 99, 235, .38), transparent 65%),
        radial-gradient(560px 320px at 8% 96%, rgba(6, 182, 212, .28), transparent 65%),
        linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
    background-size: auto, auto, 46px 46px, 46px 46px;
}
.hero-inner {
    position: relative;
    display: grid;
    grid-template-columns: 1.08fr .92fr;
    align-items: center;
    gap: 56px;
    padding: 84px 20px 108px;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 15px;
    border-radius: 999px;
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .16);
    font-size: 13px;
    color: #cbd5e1;
    margin-bottom: 22px;
}
.hero-badge .dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #22d3ee;
    box-shadow: 0 0 0 4px rgba(34, 211, 238, .18);
}
.hero h1 {
    font-size: clamp(30px, 4.2vw, 50px);
    line-height: 1.28;
    font-weight: 800;
    letter-spacing: .5px;
    margin-bottom: 20px;
}
.hero .grad {
    background: linear-gradient(92deg, #60a5fa, #22d3ee 60%, #a5f3fc);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.hero-sub { font-size: 16px; color: #9fb0c7; line-height: 1.9; max-width: 560px; margin-bottom: 30px; }
.hero-sub strong { color: #e2e8f0; font-weight: 600; }
.hero-btns { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 26px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 8px 24px; font-size: 14px; color: #94a3b8; }
.hero-points span { display: inline-flex; align-items: center; gap: 6px; }
.hero-points .icon { color: #22d3ee; }

/* Hero 右侧数据面板 */
.hero-visual { position: relative; }
.mock-panel {
    position: relative;
    background: linear-gradient(160deg, rgba(255, 255, 255, .1), rgba(255, 255, 255, .03));
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: 20px;
    padding: 20px;
    box-shadow: 0 30px 80px rgba(2, 6, 23, .5);
}
.mock-head { display: flex; align-items: center; gap: 6px; margin-bottom: 16px; }
.mdot { width: 10px; height: 10px; border-radius: 50%; }
.mdot-r { background: #f87171; }
.mdot-y { background: #fbbf24; }
.mdot-g { background: #34d399; }
.mock-title { margin-left: 8px; font-size: 13px; color: #94a3b8; letter-spacing: .5px; }
.mock-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 16px; }
.mock-stat {
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 12px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.mock-stat span { font-size: 12px; color: #94a3b8; }
.mock-stat strong { font-size: 21px; color: #fff; letter-spacing: .5px; }
.mock-stat em { font-style: normal; font-size: 11px; color: #34d399; }
.mock-chart { display: flex; align-items: flex-end; gap: 8px; height: 104px; margin-bottom: 16px; padding: 0 4px; }
.mock-chart i {
    flex: 1;
    border-radius: 6px 6px 2px 2px;
    background: linear-gradient(180deg, #38bdf8, #2563eb);
    opacity: .85;
}
.mock-list { display: flex; flex-direction: column; gap: 8px; }
.mock-row {
    display: flex;
    align-items: center;
    gap: 9px;
    background: rgba(255, 255, 255, .05);
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 13px;
}
.mr-dot { width: 7px; height: 7px; border-radius: 50%; background: #22d3ee; box-shadow: 0 0 0 3px rgba(34, 211, 238, .2); }
.mr-text { color: #cbd5e1; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mock-row em { font-style: normal; font-size: 11px; color: #64748b; }
.float-card {
    position: absolute;
    background: #fff;
    color: var(--c-text);
    border-radius: 12px;
    padding: 10px 16px;
    font-size: 13px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 7px;
    animation: floatY 3.2s ease-in-out infinite alternate;
}
.float-card strong { font-size: 17px; color: var(--c-primary); }
.fc1 { top: -18px; right: 12px; }
.fc2 { bottom: -16px; left: -10px; animation-delay: 1.2s; }
.pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: #22c55e; animation: pulse 1.6s infinite; }
@keyframes floatY { from { transform: translateY(0); } to { transform: translateY(-10px); } }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, .45); } 50% { box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); } }

/* ---------------- 数据条 ---------------- */
.stats-section { background: var(--c-dark); padding-bottom: 56px; }
.stats-card {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 30px 18px;
    margin-top: -52px;
    position: relative;
    z-index: 2;
}
.stat-item { text-align: center; position: relative; }
.stat-item + .stat-item::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 46px;
    background: var(--c-line);
}
.stat-item strong {
    display: block;
    font-size: clamp(24px, 3vw, 34px);
    font-weight: 800;
    letter-spacing: .5px;
    background: var(--c-grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.stat-item span { font-size: 13px; color: var(--c-muted); }

/* ---------------- 定义块（GEO答案前置） ---------------- */
.def-section { padding: 54px 0 0; }
.def-box {
    max-width: 980px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(37, 99, 235, .06), rgba(6, 182, 212, .06));
    border: 1px solid rgba(37, 99, 235, .16);
    border-radius: var(--radius);
    padding: 30px 36px;
}
.def-q { font-size: 22px; color: #0f172a; margin-bottom: 10px; }
.def-q::before { content: "Q "; color: var(--c-primary); font-weight: 800; }
.def-a { font-size: 15.5px; color: #475569; line-height: 1.95; }
.def-a::before { content: "A "; color: var(--c-cyan); font-weight: 800; }

/* ---------------- 通用板块 ---------------- */
.section { padding: 84px 0; }
.section-gray { background: var(--c-bg-gray); }
.section-dark { background: var(--c-dark); color: #fff; }
.section-head { max-width: 720px; margin: 0 auto 46px; text-align: center; }
.section-head.light h2 { color: #fff; }
.section-head.light p { color: #94a3b8; }
.eyebrow {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 999px;
    background: rgba(37, 99, 235, .09);
    color: var(--c-primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 14px;
}
.section-head.light .eyebrow { background: rgba(96, 165, 250, .14); color: #7dd3fc; }
.section-head h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; line-height: 1.35; color: #0f172a; margin-bottom: 12px; }
.section-head p { color: var(--c-muted); font-size: 15.5px; }
.section-more { text-align: center; margin-top: 40px; }

/* ---------------- 痛点 ---------------- */
.pain-section { position: relative; overflow: hidden; }
.pain-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(620px 300px at 14% 0%, rgba(37, 99, 235, .22), transparent 60%);
    pointer-events: none;
}
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; position: relative; }
.pain-card {
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: var(--radius);
    padding: 30px 26px;
    transition: all .25s ease;
}
.pain-card:hover { background: rgba(255, 255, 255, .08); transform: translateY(-4px); }
.pain-icon {
    width: 50px;
    height: 50px;
    border-radius: 13px;
    background: rgba(248, 113, 113, .14);
    color: #f87171;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
}
.pain-card h3 { font-size: 18px; color: #fff; margin-bottom: 8px; }
.pain-card p { font-size: 14px; color: #94a3b8; line-height: 1.85; }

/* ---------------- 产品矩阵（首页） ---------------- */
.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.product-card {
    background: #fff;
    border: 1px solid #e8eef8;
    border-radius: var(--radius);
    padding: 30px;
    transition: all .25s ease;
    display: flex;
    flex-direction: column;
}
.product-card:hover { transform: translateY(-5px); border-color: rgba(37, 99, 235, .3); box-shadow: var(--shadow-md); }
.pc-top { display: flex; align-items: center; gap: 15px; margin-bottom: 16px; }
.pc-icon {
    width: 54px;
    height: 54px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
    font-size: 17px;
    letter-spacing: .5px;
    flex-shrink: 0;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
}
.accent-1 .pc-icon, .accent-1 .pdc-media-icon, .accent-1 .mp-icon, .accent-1.pd-feature-item .icon { background: linear-gradient(135deg, #0891b2, #22d3ee); }
.accent-2 .pc-icon, .accent-2 .pdc-media-icon, .accent-2 .mp-icon { background: linear-gradient(135deg, #7c3aed, #a78bfa); }
.accent-3 .pc-icon, .accent-3 .pdc-media-icon, .accent-3 .mp-icon { background: linear-gradient(135deg, #ea580c, #f59e0b); }
.pc-title-wrap h3 { font-size: 19px; margin-bottom: 3px; }
.pc-title-wrap h3 a:hover { color: var(--c-primary); }
.pc-sub { font-size: 13px; color: var(--c-muted); }
.pc-summary { font-size: 14.5px; color: #475569; line-height: 1.85; margin-bottom: 16px; }
.pc-features { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.pc-features li {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 12px;
    border-radius: 999px;
    background: var(--c-bg-gray);
    border: 1px solid #e8eef8;
    font-size: 13px;
    color: #475569;
}
.pc-features .icon { color: var(--c-cyan); }
.pc-link {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--c-primary);
    font-weight: 600;
    font-size: 14.5px;
}
.pc-link:hover { gap: 10px; }

/* ---------------- 核心功能 ---------------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature-card {
    background: #fff;
    border: 1px solid #e8eef8;
    border-radius: var(--radius);
    padding: 28px 26px;
    transition: all .25s ease;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(37, 99, 235, .25); }
.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 13px;
    background: linear-gradient(135deg, rgba(37, 99, 235, .12), rgba(6, 182, 212, .12));
    color: var(--c-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}
.feature-card h3 { font-size: 17px; margin-bottom: 7px; }
.feature-card p { font-size: 14px; color: var(--c-muted); line-height: 1.85; }

/* ---------------- 合作流程 ---------------- */
.step-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.step-card {
    position: relative;
    background: #fff;
    border: 1px solid #e8eef8;
    border-radius: var(--radius);
    padding: 28px 24px 24px;
    transition: all .25s ease;
}
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.step-card::after {
    content: "";
    position: absolute;
    top: 44px;
    right: -16px;
    width: 30px;
    height: 2px;
    background: repeating-linear-gradient(90deg, rgba(37, 99, 235, .4) 0 6px, transparent 6px 12px);
}
.step-card:last-child::after { display: none; }
.step-no {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: 1px;
    background: var(--c-grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    margin-bottom: 10px;
}
.step-card h3 { font-size: 17px; margin-bottom: 7px; }
.step-card p { font-size: 13.5px; color: var(--c-muted); line-height: 1.8; }

/* ---------------- 适用行业 ---------------- */
.industry-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.industry-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #fff;
    border: 1px solid #e8eef8;
    border-radius: 12px;
    padding: 18px 20px;
    font-size: 15px;
    font-weight: 500;
    transition: all .22s ease;
}
.industry-item:hover { border-color: rgba(37, 99, 235, .35); transform: translateY(-3px); box-shadow: var(--shadow-sm); }
.industry-item .icon { color: var(--c-primary); }

/* ---------------- FAQ ---------------- */
.faq-list { max-width: 840px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
    background: #fff;
    border: 1px solid #e8eef8;
    border-radius: 14px;
    transition: border-color .2s ease, box-shadow .2s ease;
}
.faq-item[open] { border-color: rgba(37, 99, 235, .3); box-shadow: var(--shadow-sm); }
.faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 19px 24px;
    cursor: pointer;
    list-style: none;
    user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-q { font-size: 16px; font-weight: 600; color: #0f172a; }
.faq-arrow { color: var(--c-muted); transition: transform .25s ease; flex-shrink: 0; }
.faq-item[open] .faq-arrow { transform: rotate(180deg); color: var(--c-primary); }
.faq-body { padding: 0 24px 22px; }
.faq-body p { font-size: 14.5px; color: #475569; line-height: 1.95; }

/* ---------------- 新闻卡片（首页） ---------------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
    background: #fff;
    border: 1px solid #e8eef8;
    border-radius: var(--radius);
    overflow: hidden;
    transition: all .25s ease;
    display: flex;
    flex-direction: column;
}
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.news-cover { display: block; aspect-ratio: 16 / 9; overflow: hidden; background: var(--c-bg-gray); }
.news-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.news-card:hover .news-cover img { transform: scale(1.05); }
.news-cover-plain {
    position: relative;
    background: linear-gradient(135deg, #1e3a8a, #2563eb 55%, #06b6d4);
    display: flex;
    align-items: center;
    justify-content: center;
}
.nc-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    padding: 4px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, .18);
    border: 1px solid rgba(255, 255, 255, .3);
    color: #fff;
    font-size: 12px;
}
.nc-brand { font-size: 21px; font-weight: 800; color: rgba(255, 255, 255, .9); letter-spacing: 3px; }
.news-body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.news-meta { display: flex; align-items: center; gap: 12px; font-size: 12.5px; color: var(--c-muted); margin-bottom: 10px; }
.news-cat { padding: 3px 10px; border-radius: 6px; background: rgba(37, 99, 235, .08); color: var(--c-primary); font-weight: 600; }
.news-views { display: inline-flex; align-items: center; gap: 4px; }
.news-body h3 { font-size: 16.5px; line-height: 1.55; margin-bottom: 9px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-body h3 a:hover { color: var(--c-primary); }
.news-body p { font-size: 13.5px; color: var(--c-muted); line-height: 1.8; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------------- CTA 咨询带 ---------------- */
.cta-band {
    position: relative;
    background: linear-gradient(120deg, #101b33, #1e3a8a 55%, #0e7490);
    color: #fff;
    padding: 62px 0;
    overflow: hidden;
}
.cta-band::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(520px 260px at 88% 20%, rgba(34, 211, 238, .25), transparent 60%),
        linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
    background-size: auto, 42px 42px, 42px 42px;
}
.cta-inner { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.cta-text h2 { font-size: clamp(22px, 2.8vw, 32px); margin-bottom: 10px; }
.cta-text p { color: #c7d4e8; margin-bottom: 26px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.cta-qr {
    background: #fff;
    border-radius: var(--radius);
    padding: 16px;
    text-align: center;
    color: var(--c-muted);
    font-size: 12.5px;
    flex-shrink: 0;
    box-shadow: var(--shadow-lg);
}
.cta-qr img { width: 132px; height: 132px; object-fit: contain; display: block; margin: 0 auto 8px; border-radius: 8px; }
.qr-placeholder {
    width: 132px;
    height: 132px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 8px;
    border: 1px dashed var(--c-line);
    border-radius: 8px;
    color: #94a3b8;
    font-size: 12px;
}

/* ---------------- 内页通用头部 ---------------- */
.page-hero {
    background: linear-gradient(120deg, #0b1220, #16264a 60%, #0e3a4d);
    color: #fff;
    padding: 54px 0 46px;
    position: relative;
    overflow: hidden;
}
.page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(480px 220px at 85% 0%, rgba(6, 182, 212, .22), transparent 60%),
        linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
    background-size: auto, 42px 42px, 42px 42px;
}
.page-hero .container { position: relative; }
.page-hero h1 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; letter-spacing: 1px; margin-bottom: 8px; }
.page-hero > .container > p { color: #9fb0c7; font-size: 15.5px; margin-bottom: 16px; }
.page-hero-article h1 { font-size: clamp(21px, 2.6vw, 30px); line-height: 1.5; max-width: 900px; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; font-size: 13.5px; color: #9fb0c7; margin-bottom: 16px; }
.article-meta span, .article-meta time { display: inline-flex; align-items: center; gap: 5px; }
.article-meta .news-cat { background: rgba(96, 165, 250, .15); color: #7dd3fc; }

/* 面包屑 */
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13.5px; color: rgba(255, 255, 255, .62); }
.breadcrumb a { color: rgba(255, 255, 255, .78); }
.breadcrumb a:hover { color: #fff; }
.bc-sep { color: rgba(255, 255, 255, .35); }
.bc-current { color: rgba(255, 255, 255, .92); }

/* ---------------- 关于我们 ---------------- */
.about-intro { display: grid; grid-template-columns: 1.25fr .75fr; gap: 56px; align-items: start; }
.about-text h2 { font-size: clamp(23px, 2.8vw, 30px); margin: 4px 0 18px; line-height: 1.4; }
.about-text p { color: #475569; line-height: 1.95; margin-bottom: 14px; font-size: 15px; }
.about-actions { display: flex; gap: 14px; margin-top: 26px; }
.about-side { display: flex; flex-direction: column; gap: 20px; }
.about-card {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--c-line);
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    overflow: hidden;
}
.ab-item { background: #fff; text-align: center; padding: 26px 12px; }
.ab-item strong {
    display: block;
    font-size: 28px;
    font-weight: 800;
    background: var(--c-grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.ab-item span { font-size: 13px; color: var(--c-muted); }
.about-quote {
    background: var(--c-dark);
    color: #cbd5e1;
    border-radius: var(--radius);
    padding: 26px 28px;
    font-size: 14.5px;
    line-height: 1.95;
}
.advantage-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.advantage-card { background: #fff; border: 1px solid #e8eef8; border-radius: var(--radius); padding: 28px 24px; transition: all .25s ease; }
.advantage-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.advantage-card h3 { font-size: 16.5px; margin-bottom: 8px; }
.advantage-card p { font-size: 13.5px; color: var(--c-muted); line-height: 1.85; }

/* 时间线 */
.timeline { max-width: 760px; margin: 0 auto; position: relative; padding-left: 0; }
.timeline::before {
    content: "";
    position: absolute;
    left: 92px;
    top: 6px;
    bottom: 6px;
    width: 2px;
    background: linear-gradient(180deg, rgba(37, 99, 235, .5), rgba(6, 182, 212, .4));
}
.timeline-item { display: flex; gap: 26px; align-items: flex-start; padding: 14px 0; position: relative; }
.tl-year { width: 66px; text-align: right; font-weight: 800; font-size: 17px; color: var(--c-primary); flex-shrink: 0; line-height: 1.7; }
.tl-dot {
    position: relative;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--c-grad);
    margin-top: 8px;
    flex-shrink: 0;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, .14);
    z-index: 1;
}
.tl-text { background: #fff; border: 1px solid #e8eef8; border-radius: 12px; padding: 14px 20px; font-size: 14.5px; color: #475569; flex: 1; }

/* ---------------- 产品服务列表 ---------------- */
.product-list { display: flex; flex-direction: column; gap: 26px; }
.product-detail-card {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 0;
    background: #fff;
    border: 1px solid #e8eef8;
    border-radius: var(--radius);
    overflow: hidden;
    transition: all .25s ease;
}
.product-detail-card:hover { box-shadow: var(--shadow-md); border-color: rgba(37, 99, 235, .25); }
.pdc-media { background: var(--c-bg-gray); display: flex; align-items: stretch; min-height: 240px; }
.pdc-media img { width: 100%; height: 100%; object-fit: cover; }
.pdc-media-plain {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: linear-gradient(150deg, #eef4ff, #e6fbff);
}
.pdc-media-icon {
    width: 72px;
    height: 72px;
    border-radius: 20px;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: #fff;
    font-size: 22px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
}
.pdc-media-name { font-weight: 700; color: #334155; letter-spacing: 1px; }
.pdc-body { padding: 28px 32px; }
.pdc-body h3 { font-size: 21px; margin-bottom: 4px; }
.pdc-sub { color: var(--c-primary); font-size: 14px; margin-bottom: 12px; }
.pdc-summary { color: #475569; font-size: 14.5px; line-height: 1.9; margin-bottom: 14px; }
.pdc-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px 18px; margin-bottom: 20px; }
.pdc-features li { display: flex; align-items: center; gap: 7px; font-size: 13.5px; color: #475569; }
.pdc-features .icon { color: var(--c-cyan); }
.pdc-actions { display: flex; gap: 12px; }

/* ---------------- 产品详情 ---------------- */
.product-detail-layout { display: grid; grid-template-columns: 1fr 320px; gap: 44px; align-items: start; }
.pd-cover { margin-bottom: 28px; border-radius: var(--radius); overflow: hidden; border: 1px solid #e8eef8; }
.pd-cover img { width: 100%; display: block; }
.pd-h2 { font-size: 20px; margin-bottom: 18px; padding-left: 12px; border-left: 4px solid var(--c-primary); line-height: 1.4; }
.pd-features { margin-bottom: 30px; }
.pd-feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.pd-feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--c-bg-gray);
    border: 1px solid #e8eef8;
    border-radius: 10px;
    padding: 12px 15px;
    font-size: 14px;
    color: #334155;
}
.pd-feature-item .icon { color: var(--c-primary); }

/* 侧栏卡片 */
.pd-side, .news-side { display: flex; flex-direction: column; gap: 22px; position: sticky; top: 96px; }
.side-card { background: #fff; border: 1px solid #e8eef8; border-radius: var(--radius); padding: 24px; }
.side-card h4 { font-size: 16.5px; margin-bottom: 6px; }
.side-card > p { font-size: 13.5px; color: var(--c-muted); margin-bottom: 16px; }
.side-contact .btn { margin-bottom: 10px; }
.side-qr { margin-top: 8px; text-align: center; }
.side-qr img { width: 150px; height: 150px; object-fit: contain; border-radius: 10px; border: 1px solid var(--c-line); }
.side-links li { border-bottom: 1px dashed var(--c-line); }
.side-links li:last-child { border-bottom: 0; }
.side-links a { display: flex; align-items: center; justify-content: space-between; padding: 12px 2px; font-size: 14.5px; color: #334155; }
.side-links a:hover { color: var(--c-primary); }
.side-links .icon { color: #cbd5e1; }

/* 底部迷你产品 */
.mini-product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.mini-product {
    background: #fff;
    border: 1px solid #e8eef8;
    border-radius: var(--radius);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: all .25s ease;
}
.mini-product:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.mp-icon {
    width: 46px;
    height: 46px;
    border-radius: 13px;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: #fff;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
}
.mini-product strong { font-size: 16px; }
.mini-product em { font-style: normal; font-size: 13px; color: var(--c-muted); }

/* ---------------- 新闻列表页 ---------------- */
.news-layout { display: grid; grid-template-columns: 1fr 320px; gap: 44px; align-items: start; }
.news-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; }
.news-tab {
    padding: 8px 20px;
    border-radius: 999px;
    border: 1px solid var(--c-line);
    background: #fff;
    font-size: 14px;
    color: #475569;
}
.news-tab:hover { border-color: rgba(37, 99, 235, .4); color: var(--c-primary); }
.news-tab.active { background: var(--c-grad); border-color: transparent; color: #fff; box-shadow: 0 6px 16px rgba(37, 99, 235, .25); }
.news-list { display: flex; flex-direction: column; gap: 22px; }
.news-item {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 0;
    background: #fff;
    border: 1px solid #e8eef8;
    border-radius: var(--radius);
    overflow: hidden;
    transition: all .25s ease;
}
.news-item:hover { box-shadow: var(--shadow-md); border-color: rgba(37, 99, 235, .25); }
.ni-cover { display: block; min-height: 170px; background: var(--c-bg-gray); }
.ni-cover img { width: 100%; height: 100%; object-fit: cover; }
.ni-cover-plain {
    position: relative;
    background: linear-gradient(135deg, #1e3a8a, #2563eb 55%, #06b6d4);
    display: flex;
    align-items: center;
    justify-content: center;
}
.ni-body { padding: 22px 26px; display: flex; flex-direction: column; }
.ni-body h2 { font-size: 17.5px; line-height: 1.55; margin-bottom: 9px; }
.ni-body h2 a:hover { color: var(--c-primary); }
.ni-body > p { font-size: 13.5px; color: var(--c-muted); line-height: 1.8; margin-bottom: 12px; }
.ni-link { margin-top: auto; display: inline-flex; align-items: center; gap: 6px; color: var(--c-primary); font-size: 14px; font-weight: 600; }

/* 热门文章 */
.hot-list { display: flex; flex-direction: column; }
.hot-list li { display: flex; gap: 12px; align-items: flex-start; padding: 11px 0; border-bottom: 1px dashed var(--c-line); }
.hot-list li:last-child { border-bottom: 0; }
.hot-no {
    width: 22px;
    height: 22px;
    border-radius: 6px;
    background: var(--c-bg-gray);
    color: var(--c-muted);
    font-size: 12px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 5px;
}
.hot-no.hot-top { background: var(--c-grad); color: #fff; }
.hot-list a { font-size: 14px; color: #334155; line-height: 1.65; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.hot-list a:hover { color: var(--c-primary); }

/* ---------------- 文章详情 ---------------- */
.article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 44px; align-items: start; }
.article-main { background: #fff; border: 1px solid #e8eef8; border-radius: var(--radius); padding: 36px 40px; }
.article-cover { margin-bottom: 26px; border-radius: 12px; overflow: hidden; }
.article-summary {
    background: rgba(37, 99, 235, .06);
    border-left: 4px solid var(--c-primary);
    border-radius: 8px;
    padding: 16px 20px;
    font-size: 14.5px;
    color: #475569;
    line-height: 1.9;
    margin-bottom: 26px;
}
.article-summary strong { color: var(--c-primary); }
.article-content { font-size: 15.5px; color: #334155; line-height: 1.95; }
.article-content h2 { font-size: 20px; color: #0f172a; margin: 30px 0 13px; padding-left: 12px; border-left: 4px solid var(--c-primary); line-height: 1.5; }
.article-content h3 { font-size: 17.5px; color: #0f172a; margin: 24px 0 10px; }
.article-content h4 { font-size: 16px; margin: 20px 0 8px; }
.article-content p { margin: 13px 0; }
.article-content ul, .article-content ol { padding-left: 22px; margin: 13px 0; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin: 7px 0; }
.article-content img { border-radius: 10px; margin: 10px 0; }
.article-content table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; }
.article-content th, .article-content td { border: 1px solid var(--c-line); padding: 10px 14px; text-align: left; }
.article-content th { background: var(--c-bg-gray); }
.article-content blockquote {
    border-left: 4px solid var(--c-cyan);
    background: var(--c-bg-gray);
    padding: 14px 20px;
    border-radius: 8px;
    color: #475569;
    margin: 16px 0;
}
.article-content a { color: var(--c-primary); border-bottom: 1px dashed rgba(37, 99, 235, .5); }
.article-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin: 30px 0 8px; font-size: 13.5px; color: var(--c-muted); }
.tag { padding: 5px 14px; border-radius: 999px; background: var(--c-bg-gray); border: 1px solid var(--c-line); color: #475569; font-size: 13px; }
.tag:hover { color: var(--c-primary); border-color: rgba(37, 99, 235, .4); }
.article-nav { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 26px 0; }
.an-item { display: flex; flex-direction: column; gap: 4px; background: var(--c-bg-gray); border: 1px solid #e8eef8; border-radius: 12px; padding: 15px 18px; }
.an-item span { font-size: 12.5px; color: var(--c-muted); }
.an-item strong { font-size: 14px; color: #334155; font-weight: 500; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.an-item:hover { border-color: rgba(37, 99, 235, .35); }
.an-item:hover strong { color: var(--c-primary); }
.an-empty { opacity: .6; }
.an-next { text-align: right; }
.article-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
    background: linear-gradient(120deg, #101b33, #1e3a8a);
    border-radius: 14px;
    padding: 24px 28px;
    color: #fff;
}
.ac-text strong { font-size: 17px; display: block; margin-bottom: 4px; }
.ac-text p { font-size: 13.5px; color: #c7d4e8; }
.ac-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.ac-actions .btn-outline { background: transparent; border-color: rgba(255, 255, 255, .4); color: #fff; }
.ac-actions .btn-outline:hover { background: rgba(255, 255, 255, .12); }
.related-list li { padding: 11px 0; border-bottom: 1px dashed var(--c-line); }
.related-list li:last-child { border-bottom: 0; }
.related-list a { display: flex; justify-content: space-between; gap: 12px; font-size: 14px; color: #334155; line-height: 1.6; }
.related-list a:hover { color: var(--c-primary); }
.related-list time { color: #94a3b8; font-size: 12.5px; flex-shrink: 0; }

/* ---------------- 联系我们 ---------------- */
.contact-layout { display: grid; grid-template-columns: 1fr 1.05fr; gap: 48px; align-items: start; }
.contact-info h2 { font-size: clamp(22px, 2.6vw, 28px); margin: 6px 0 24px; line-height: 1.45; }
.contact-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-bottom: 20px; }
.contact-card {
    display: flex;
    align-items: center;
    gap: 14px;
    text-align: left;
    background: #fff;
    border: 1px solid #e8eef8;
    border-radius: var(--radius);
    padding: 20px;
    transition: all .22s ease;
    width: 100%;
    font-family: inherit;
}
.contact-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: rgba(37, 99, 235, .3); }
.cc-icon {
    width: 46px;
    height: 46px;
    border-radius: 13px;
    background: rgba(37, 99, 235, .1);
    color: var(--c-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.cc-icon-green { background: rgba(22, 163, 74, .1); color: #16a34a; }
.cc-icon-orange { background: rgba(234, 88, 12, .1); color: #ea580c; }
.cc-icon-violet { background: rgba(124, 58, 237, .1); color: #7c3aed; }
.cc-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.cc-text em { font-style: normal; font-size: 12.5px; color: var(--c-muted); }
.cc-text strong { font-size: 15px; color: #0f172a; word-break: normal; overflow-wrap: break-word; }
.contact-qr-card {
    display: flex;
    align-items: center;
    gap: 18px;
    background: var(--c-bg-gray);
    border: 1px solid #e8eef8;
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 18px;
}
.contact-qr-card img { width: 104px; height: 104px; object-fit: contain; border-radius: 10px; background: #fff; }
.contact-qr-card strong { display: block; margin-bottom: 5px; }
.contact-qr-card p { font-size: 13px; color: var(--c-muted); }
.contact-company { font-size: 13px; color: var(--c-muted); }

.contact-form-card { background: #fff; border: 1px solid #e8eef8; border-radius: var(--radius); padding: 34px 36px; box-shadow: var(--shadow-sm); }
.contact-form-card h3 { font-size: 20px; margin-bottom: 6px; }
.form-tip { font-size: 13px; color: var(--c-muted); margin-bottom: 22px; }
.form-row { margin-bottom: 18px; display: flex; flex-direction: column; gap: 7px; }
.form-row label { font-size: 14px; font-weight: 600; color: #334155; }
.form-row label i { color: #dc2626; font-style: normal; }
.form-row input, .form-row textarea, .form-row select {
    width: 100%;
    border: 1px solid var(--c-line);
    border-radius: 10px;
    padding: 12px 15px;
    font-size: 14.5px;
    color: var(--c-text);
    background: #fff;
    transition: border-color .2s ease, box-shadow .2s ease;
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus {
    outline: none;
    border-color: var(--c-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}
.form-row textarea { resize: vertical; }
.hp-field { position: absolute; left: -9999px; opacity: 0; height: 0; }
.form-note { font-size: 12.5px; color: #94a3b8; text-align: center; margin-top: 12px; }

.alert { padding: 13px 18px; border-radius: 10px; font-size: 14px; margin-bottom: 18px; line-height: 1.7; }
.alert-success { background: #dcfce7; color: #15803d; border: 1px solid #bbf7d0; }
.alert-error { background: #fee2e2; color: #b91c1c; border: 1px solid #fecaca; }

.empty-tip { text-align: center; color: var(--c-muted); padding: 60px 0; }

/* ---------------- 分页 ---------------- */
.pager { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 9px; margin-top: 40px; }
.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 14px;
    border-radius: 10px;
    border: 1px solid var(--c-line);
    background: #fff;
    font-size: 14px;
    color: #475569;
    transition: all .2s ease;
}
.page-link:hover { border-color: rgba(37, 99, 235, .4); color: var(--c-primary); }
.page-link.current { background: var(--c-grad); border-color: transparent; color: #fff; box-shadow: 0 6px 16px rgba(37, 99, 235, .25); }
.page-link.disabled { opacity: .45; cursor: not-allowed; }
.page-dots { color: #94a3b8; padding: 0 4px; }

/* ---------------- 404 ---------------- */
.page-404 { text-align: center; padding: 100px 0 110px; }
.err-code {
    font-size: 110px;
    font-weight: 800;
    line-height: 1;
    background: var(--c-grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    margin-bottom: 16px;
}
.page-404 h1 { font-size: 22px; margin-bottom: 10px; color: #0f172a; }
.page-404 p { color: var(--c-muted); margin-bottom: 26px; }

/* ---------------- 页脚 ---------------- */
.site-footer { background: var(--c-dark); color: #94a3b8; padding-top: 60px; }
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
    gap: 42px;
    padding-bottom: 46px;
}
.footer-logo { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo span { font-size: 19px; font-weight: 700; color: #fff; letter-spacing: 1px; }
.footer-desc { font-size: 13.5px; line-height: 1.9; margin-bottom: 18px; }
.footer-contact-mini { display: flex; flex-direction: column; gap: 8px; font-size: 13.5px; }
.footer-contact-mini span { display: inline-flex; align-items: center; gap: 7px; }
.footer-contact-mini .icon { color: #22d3ee; }
.footer-col h4 { color: #fff; font-size: 15.5px; margin-bottom: 18px; letter-spacing: .5px; }
.footer-links li { margin-bottom: 11px; }
.footer-links a { font-size: 13.5px; color: #94a3b8; }
.footer-links a:hover { color: #fff; }
.footer-contact li { display: flex; gap: 9px; margin-bottom: 12px; font-size: 13.5px; line-height: 1.7; }
.footer-contact .icon { color: #22d3ee; margin-top: 4px; }
.qr-box { display: flex; align-items: center; gap: 14px; margin-top: 4px; }
.qr-box img { width: 100px; height: 100px; border-radius: 10px; object-fit: contain; background: #fff; padding: 4px; }
.qr-empty {
    width: 100px;
    height: 100px;
    border-radius: 10px;
    border: 1px dashed rgba(255, 255, 255, .25);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 12px;
    color: #64748b;
    flex-shrink: 0;
}
.qr-box-text { display: flex; flex-direction: column; gap: 4px; }
.qr-box-text strong { color: #e2e8f0; font-size: 14px; }
.qr-box-text span { font-size: 13px; color: #22d3ee; }
.footer-bar { border-top: 1px solid rgba(255, 255, 255, .08); padding: 20px 0; }
.footer-bar-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; font-size: 13px; }
.footer-icp { color: #94a3b8; }
.footer-icp:hover { color: #fff; }

/* ---------------- 悬浮客服 ---------------- */
.float-rail {
    position: fixed;
    right: 22px;
    bottom: 140px;
    z-index: 120;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.rail-item {
    position: relative;
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: #fff;
    border: 1px solid #e8eef8;
    color: var(--c-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: all .22s ease;
}
.rail-item:hover { background: var(--c-grad); color: #fff; border-color: transparent; }
.rail-tip {
    position: absolute;
    right: 58px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--c-dark);
    color: #fff;
    font-size: 12.5px;
    padding: 6px 12px;
    border-radius: 8px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all .2s ease;
}
.rail-tip::after {
    content: "";
    position: absolute;
    right: -4px;
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
    width: 8px;
    height: 8px;
    background: var(--c-dark);
}
.rail-item:hover .rail-tip { opacity: 1; visibility: visible; }
.rail-top { display: none; }
.rail-top.show { display: flex; }

/* ---------------- 二维码弹窗 ---------------- */
.qr-modal {
    position: fixed;
    inset: 0;
    z-index: 400;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.qr-modal.open { display: flex; }
.qr-mask { position: absolute; inset: 0; background: rgba(6, 12, 26, .62); }
.qr-card {
    position: relative;
    background: #fff;
    border-radius: 18px;
    padding: 30px 32px 24px;
    width: min(340px, 92vw);
    text-align: center;
    box-shadow: var(--shadow-lg);
    animation: popIn .25s ease;
}
@keyframes popIn { from { transform: scale(.92); opacity: 0; } to { transform: none; opacity: 1; } }
.qr-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 0;
    background: var(--c-bg-gray);
    color: var(--c-muted);
    display: flex;
    align-items: center;
    justify-content: center;
}
.qr-card h4 { font-size: 17px; margin-bottom: 16px; }
.qr-img { width: 210px; height: 210px; object-fit: contain; border-radius: 12px; border: 1px solid var(--c-line); display: block; margin: 0 auto 14px; }
.qr-placeholder { display: flex; align-items: center; justify-content: center; background: var(--c-bg-gray); color: #94a3b8; font-size: 13px; line-height: 1.8; }
.qr-line { font-size: 14px; color: #334155; display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap; margin-bottom: 6px; }
.qr-line strong { color: var(--c-primary); }
.copy-btn {
    padding: 4px 12px;
    border-radius: 6px;
    border: 1px solid rgba(37, 99, 235, .4);
    background: rgba(37, 99, 235, .06);
    color: var(--c-primary);
    font-size: 12.5px;
}
.copy-btn:hover { background: rgba(37, 99, 235, .12); }
.qr-tip { font-size: 12.5px; color: #94a3b8; }

/* ---------------- 移动端底部操作栏 ---------------- */
.mobile-bar {
    display: none;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 200;
    background: #fff;
    border-top: 1px solid var(--c-line);
    padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    box-shadow: 0 -6px 24px rgba(15, 23, 42, .07);
}
.mb-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 6px 0;
    border-radius: 10px;
    font-size: 12px;
    color: #475569;
}
.mb-item .icon { color: var(--c-primary); }
.mb-main { background: var(--c-grad); color: #fff; }
.mb-main .icon { color: #fff; }

/* ---------------- 滚动动画 ---------------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
    .float-card, .pulse-dot { animation: none !important; }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
    .hero-inner { grid-template-columns: 1fr; gap: 44px; padding-bottom: 96px; }
    .hero-visual { max-width: 560px; }
    .header-phone { display: none; }
    .product-detail-layout, .news-layout, .article-layout { grid-template-columns: 1fr; }
    .pd-side, .news-side { position: static; }
    .about-intro { grid-template-columns: 1fr; gap: 36px; }
    .feature-grid, .advantage-grid { grid-template-columns: repeat(2, 1fr); }
    .pdc-features { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
    .main-nav { display: none; }
    .nav-toggle { display: flex; margin-left: auto; }
    .header-cta { margin-left: auto; }
    .header-cta .btn { display: none; }
    .product-grid { grid-template-columns: 1fr; }
    .pain-grid { grid-template-columns: 1fr; }
    .step-grid { grid-template-columns: repeat(2, 1fr); }
    .step-card::after { display: none; }
    .industry-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid, .mini-product-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
    .cta-inner { flex-direction: column; align-items: flex-start; }
    .contact-layout { grid-template-columns: 1fr; gap: 36px; }
    .product-detail-card { grid-template-columns: 1fr; }
    .pdc-media { min-height: 170px; }
    .news-item { grid-template-columns: 1fr; }
    .ni-cover { min-height: 180px; }
    .float-rail { display: none; }
    .mobile-bar { display: grid; }
    body { padding-bottom: 64px; }
    .fc1 { top: -12px; right: 4px; }
    .fc2 { bottom: -10px; left: 4px; }
}

@media (max-width: 640px) {
    .topbar { display: none; }
    .section { padding: 58px 0; }
    .hero-inner { padding: 56px 20px 86px; }
    .hero-btns .btn { flex: 1 1 100%; }
    .stats-card { grid-template-columns: repeat(2, 1fr); gap: 4px; padding: 22px 10px; }
    .stat-item + .stat-item::before { display: none; }
    .stat-item { padding: 10px 0; }
    .def-box { padding: 24px 22px; }
    .feature-grid, .advantage-grid, .step-grid, .industry-grid { grid-template-columns: 1fr; }
    .product-detail-card .pdc-body { padding: 22px; }
    .pdc-features, .pd-feature-grid { grid-template-columns: 1fr; }
    .faq-item summary { padding: 16px 18px; }
    .faq-body { padding: 0 18px 18px; }
    .article-main { padding: 24px 20px; }
    .article-nav { grid-template-columns: 1fr; }
    .article-cta { flex-direction: column; align-items: flex-start; }
    .ac-actions { width: 100%; }
    .ac-actions .btn { flex: 1; }
    .contact-form-card { padding: 24px 20px; }
    .contact-cards { grid-template-columns: 1fr; }
    .contact-qr-card { flex-direction: column; text-align: center; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-bar-inner { flex-direction: column; text-align: center; }
    .timeline::before { left: 78px; }
    .tl-year { width: 54px; font-size: 15px; }
    .about-actions .btn { flex: 1; }
    .stat-cards { grid-template-columns: 1fr; }
}