/* 舜天运维官网：平台首页 + 舜天预警通产品内页共用样式（独立于后台主题，请勿并入 leo-theme.css） */
:root {
    --navy: #081c36;
    --navy-2: #0e3057;
    --blue: #1d5fd6;
    --blue-2: #3b82f6;
    --cyan: #22b8cf;
    --amber: #f59e0b;
    --ink: #101c2e;
    --muted: #5c6b80;
    --line: #e3ebf4;
    --bg: #f5f8fd;
    --white: #fff;
    --radius: 16px;
    --shadow: 0 16px 42px rgba(13, 43, 78, .10);
    --shadow-sm: 0 6px 20px rgba(13, 43, 78, .07);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--white);
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
    font-size: 15px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
svg { display: block; }
h1, h2, h3, h4, p { margin: 0; }
.container { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.text-blue { color: var(--blue); }

/* ---------- 顶部导航 ---------- */
.site-header {
    position: sticky; top: 0; z-index: 60;
    background: rgba(255,255,255,.9);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(222,232,243,.9);
}
.header-inner { height: 72px; display: flex; align-items: center; gap: 26px; }
.logo { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
/* 品牌 logo：圆形透明 PNG（tools/images/build-brand-assets.php 生成） */
.logo-mark {
    width: 38px; height: 38px; border-radius: 50%;
    display: block; flex-shrink: 0; object-fit: contain;
    box-shadow: 0 4px 14px rgba(8,28,54,.18);
}
.logo-text { display: flex; flex-direction: column; line-height: 1.25; }
.logo-text b { font-size: 17px; letter-spacing: .5px; }
.logo-text small { font-size: 10.5px; color: #7c8a9e; letter-spacing: .3px; }
.site-nav { display: flex; align-items: center; gap: 26px; margin-left: auto; }
.site-nav > a:not(.btn) { font-size: 14px; color: #40506a; white-space: nowrap; transition: color .2s; }
.site-nav > a:not(.btn):hover { color: var(--blue); }
.nav-divider { width: 1px; height: 18px; background: var(--line); }
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 11px 22px; border-radius: 10px; font-size: 14px; font-weight: 600;
    border: 1px solid transparent; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s;
    white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
/* .btn.btn-* 双类选择器：避免被 .site-nav > a / .m-panel a 等链接规则覆盖文字颜色 */
.btn.btn-primary, a.btn.btn-primary:visited { background: var(--blue); color: #fff; box-shadow: 0 8px 20px rgba(29,95,214,.24); }
.btn.btn-primary:hover, .site-nav > a.btn.btn-primary:hover { background: #1750bd; color: #fff; box-shadow: 0 12px 26px rgba(29,95,214,.32); }
.btn.btn-ghost, a.btn.btn-ghost:visited { background: #fff; color: var(--blue); border-color: #bcd0f2; }
.btn.btn-ghost:hover { background: #f2f7ff; color: var(--blue); }
.btn.btn-light, a.btn.btn-light:visited { background: rgba(255,255,255,.13); color: #fff; border-color: rgba(255,255,255,.35); }
.btn.btn-light:hover { background: rgba(255,255,255,.22); color: #fff; }
.btn.btn-amber, a.btn.btn-amber:visited { background: linear-gradient(135deg,#f59e0b,#f97316); color: #fff; box-shadow: 0 8px 22px rgba(245,158,11,.28); }
.btn.btn-amber:hover { color: #fff; }
.btn-lg { padding: 14px 28px; font-size: 15px; border-radius: 12px; }
.m-nav { display: none; margin-left: auto; }
.m-nav summary { list-style: none; cursor: pointer; padding: 8px 12px; border: 1px solid var(--line); border-radius: 9px; font-size: 14px; color: #40506a; }
.m-nav summary::-webkit-details-marker { display: none; }
.m-nav[open] .m-panel {
    position: absolute; left: 0; right: 0; top: 72px;
    background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
    padding: 14px 24px 20px; display: grid; gap: 4px;
}
.m-panel a { padding: 10px 4px; font-size: 15px; color: #40506a; border-bottom: 1px solid #f1f5fa; }
.m-panel .btn { margin-top: 12px; }

/* ---------- 首页首屏 ---------- */
.hero {
    position: relative; overflow: hidden; color: #fff;
    background:
        radial-gradient(900px 520px at 78% 18%, rgba(34,184,207,.22), transparent 60%),
        radial-gradient(700px 480px at 12% 88%, rgba(29,95,214,.28), transparent 62%),
        linear-gradient(145deg, #07182e 0%, #0c2b52 52%, #0a3a68 100%);
}
.hero::before {
    content: ""; position: absolute; inset: 0; pointer-events: none;
    background-image:
        linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
    background-size: 46px 46px;
    -webkit-mask-image: linear-gradient(180deg, #000, transparent 92%);
    mask-image: linear-gradient(180deg, #000, transparent 92%);
}
.hero::after {
    content: ""; position: absolute; right: -160px; top: -220px; width: 620px; height: 620px;
    border: 1px solid rgba(120,200,255,.14); border-radius: 50%;
    box-shadow: 0 0 0 70px rgba(120,200,255,.045), 0 0 0 150px rgba(120,200,255,.03);
    pointer-events: none;
}
.hero-inner {
    position: relative; z-index: 1;
    display: grid; grid-template-columns: minmax(0, 1.03fr) minmax(0, 1fr); gap: 56px; align-items: center;
    padding-top: 84px; padding-bottom: 122px;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: 9px; font-size: 13px; letter-spacing: .5px;
    padding: 6px 14px; border-radius: 999px; color: #bfe6ff;
    background: rgba(80,170,255,.12); border: 1px solid rgba(120,200,255,.28);
}
.hero-badge i { width: 7px; height: 7px; border-radius: 50%; background: #4ade80; box-shadow: 0 0 0 4px rgba(74,222,128,.18); }
.hero h1 { font-size: clamp(34px, 4vw, 50px); line-height: 1.28; font-weight: 800; letter-spacing: .5px; margin: 24px 0 20px; }
.hero h1 em { font-style: normal; background: linear-gradient(100deg,#7dd3fc,#a7f3d0); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-lead { font-size: 16.5px; line-height: 2; color: #c4d6ec; max-width: 560px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin: 32px 0 30px; }
.hero-points { display: flex; gap: 26px; flex-wrap: wrap; font-size: 13px; color: #9fb6d4; }
.hero-points span { display: inline-flex; align-items: center; gap: 7px; }
.hero-points svg { color: #5eead4; }

/* 首屏产品界面预览（纯 CSS 绘制，可按需替换为实际界面截图） */
.hero-visual { position: relative; }
.browser {
    position: relative; z-index: 2; border-radius: 14px; overflow: hidden;
    background: #fff; border: 1px solid rgba(255,255,255,.35);
    box-shadow: 0 30px 70px rgba(0,0,0,.42), 0 0 0 8px rgba(255,255,255,.05);
    transform: perspective(1400px) rotateY(-6deg) rotateX(2deg);
}
.browser-bar { height: 38px; background: #eef2f8; display: flex; align-items: center; gap: 12px; padding: 0 14px; border-bottom: 1px solid #dde5f0; }
.dots { display: flex; gap: 6px; }
.dots i { width: 9px; height: 9px; border-radius: 50%; background: #cbd5e1; }
.dots i:first-child { background: #f87171; }
.dots i:nth-child(2) { background: #fbbf24; }
.dots i:nth-child(3) { background: #34d399; }
.addr { flex: 1; max-width: 250px; height: 20px; border-radius: 6px; background: #fff; border: 1px solid #e2e8f0; font-size: 10px; color: #94a3b8; padding: 0 10px; line-height: 19px; }
.app-shell { display: grid; grid-template-columns: 108px 1fr; min-height: 292px; }
.app-side { background: #102a49; padding: 16px 10px; display: grid; gap: 7px; align-content: start; }
.side-brand { height: 20px; border-radius: 5px; background: linear-gradient(90deg,#3b82f6,#22b8cf); opacity: .9; margin-bottom: 8px; }
.side-item { height: 15px; border-radius: 4px; background: rgba(255,255,255,.12); }
.side-item.on { background: rgba(96,165,250,.85); }
.app-main { padding: 16px 18px 18px; background: #f7f9fd; }
.app-title { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.app-title b { font-size: 12px; color: #1e293b; }
.app-title span { font-size: 9px; color: #94a3b8; }
.kpis { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; }
.kpi { background: #fff; border: 1px solid #e8eef7; border-radius: 8px; padding: 9px 8px; }
.kpi small { display: block; font-size: 8.5px; color: #94a3b8; }
.kpi b { display: block; font-size: 16px; color: #1e3a5f; line-height: 1.5; }
.kpi i { display: block; height: 3px; border-radius: 3px; background: #dbeafe; margin-top: 5px; }
.kpi:nth-child(2) i { background: #a7f3d0; }
.kpi:nth-child(3) i { background: #fde68a; }
.kpi:nth-child(4) i { background: #fecaca; }
.app-chart { margin-top: 12px; background: #fff; border: 1px solid #e8eef7; border-radius: 8px; padding: 11px 12px 8px; }
.app-chart small { font-size: 8.5px; color: #94a3b8; }
.bars { display: flex; align-items: flex-end; gap: 7px; height: 62px; margin-top: 8px; }
.bars i { flex: 1; border-radius: 3px 3px 0 0; background: linear-gradient(180deg,#60a5fa,#2563eb); opacity: .85; }
.bars i:nth-child(1) { height: 32%; } .bars i:nth-child(2) { height: 48%; }
.bars i:nth-child(3) { height: 40%; } .bars i:nth-child(4) { height: 66%; }
.bars i:nth-child(5) { height: 55%; } .bars i:nth-child(6) { height: 78%; }
.bars i:nth-child(7) { height: 61%; } .bars i:nth-child(8) { height: 88%; }
.bars i:nth-child(9) { height: 70%; } .bars i:nth-child(10) { height: 52%; }
.bars i:nth-child(11) { height: 74%; } .bars i:nth-child(12) { height: 44%; }
.app-rows { margin-top: 10px; display: grid; gap: 5px; }
.app-row { display: flex; align-items: center; gap: 8px; background: #fff; border: 1px solid #e8eef7; border-radius: 6px; padding: 7px 10px; }
.app-row i { width: 6px; height: 6px; border-radius: 50%; background: #34d399; flex-shrink: 0; }
.app-row i.warn { background: #f59e0b; }
.app-row span { height: 6px; border-radius: 3px; background: #e8eef7; }
.app-row span.a { width: 34%; } .app-row span.b { width: 20%; margin-left: auto; background: #f1f5f9; }
.demo-note { position: absolute; right: 8px; bottom: -26px; font-size: 11px; color: rgba(255,255,255,.45); z-index: 3; }
.float-card {
    position: absolute; z-index: 4; background: rgba(255,255,255,.96); color: var(--ink);
    border-radius: 12px; padding: 11px 15px; box-shadow: 0 14px 32px rgba(0,0,0,.28);
    display: flex; align-items: center; gap: 10px; font-size: 12px;
}
.float-card b { display: block; font-size: 17px; line-height: 1.3; }
.float-card small { color: #7c8a9e; font-size: 10.5px; }
.float-card .fc-icon { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; flex-shrink: 0; }
.fc-1 { top: -36px; left: -30px; }
.fc-1 .fc-icon { background: #e0f2fe; color: #0284c7; }
.fc-2 { bottom: 24px; right: -30px; }
.fc-2 .fc-icon { background: #dcfce7; color: #16a34a; }

/* ---------- 数据条 ---------- */
.stats { position: relative; z-index: 5; margin-top: -62px; }
.stats-box {
    display: grid; grid-template-columns: repeat(4, 1fr);
    background: #fff; border: 1px solid var(--line); border-radius: 18px;
    box-shadow: var(--shadow); overflow: hidden;
}
.stat { padding: 26px 28px; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat b { display: block; font-size: 30px; font-weight: 800; color: var(--blue); line-height: 1.2; }
.stat b em { font-style: normal; font-size: 15px; margin-left: 3px; font-weight: 700; }
.stat span { display: block; font-size: 13.5px; color: var(--muted); margin-top: 6px; }
.stat small { display: block; font-size: 11.5px; color: #9aa8bb; margin-top: 3px; }
.stats-note { text-align: center; font-size: 12px; color: #9aa8bb; margin-top: 12px; }

/* ---------- 通用区块 ---------- */
.section { padding: 96px 0; }
.section.soft { background: var(--bg); border-block: 1px solid #edf2f8; }
.section-head { max-width: 720px; margin: 0 auto 50px; text-align: center; }
.eyebrow {
    display: inline-block; font-size: 12.5px; font-weight: 700; letter-spacing: 1.4px;
    color: var(--blue); text-transform: uppercase; margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(26px,3vw,34px); font-weight: 800; letter-spacing: .3px; line-height: 1.4; }
.section-head p { color: var(--muted); font-size: 15.5px; line-height: 1.9; margin-top: 14px; }

/* ---------- 功能模块 ---------- */
.mod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.mod-card {
    position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
    padding: 26px 26px 24px; box-shadow: var(--shadow-sm);
    transition: transform .22s, box-shadow .22s, border-color .22s;
}
.mod-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #c8dbf6; }
.mod-icon {
    width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center;
    background: linear-gradient(140deg, #e8f2ff, #e0f7fa); color: var(--blue); margin-bottom: 18px;
}
.mod-icon.warm { background: linear-gradient(140deg,#fff2dc,#ffe8d6); color: #e07c05; }
.mod-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 9px; }
.mod-card p { font-size: 13.5px; color: var(--muted); line-height: 1.85; min-height: 74px; }
.mod-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.mod-tags span { font-size: 11.5px; color: #4a678f; background: #f0f5fc; border: 1px solid #e4edf9; padding: 3px 9px; border-radius: 999px; }
.mod-link { display: inline-flex; align-items: center; gap: 5px; margin-top: 16px; font-size: 13px; font-weight: 700; color: var(--blue); }
.mod-card.featured { background: linear-gradient(160deg,#f8fbff,#eef6ff); border-color: #c9ddfa; }
.mod-card.featured::after {
    content: "可独立购买"; position: absolute; top: 18px; right: 18px;
    font-size: 11px; font-weight: 700; color: #b45309; background: #fff2d9; border: 1px solid #ffe2ae;
    padding: 3px 10px; border-radius: 999px;
}

/* ---------- 闭环流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; position: relative; }
.flow-step { position: relative; text-align: center; padding: 0 6px; }
.flow-num {
    width: 54px; height: 54px; margin: 0 auto 16px; border-radius: 50%;
    display: grid; place-items: center; font-size: 17px; font-weight: 800; color: #fff;
    background: linear-gradient(140deg,#2f74e8,#22b8cf); box-shadow: 0 8px 20px rgba(37,99,235,.22);
}
.flow-step:not(:last-child)::after {
    content: ""; position: absolute; top: 27px; left: calc(50% + 32px); width: calc(100% - 64px);
    height: 2px; background: linear-gradient(90deg,#cfe0f8,#d9f1f3);
}
.flow-step h3 { font-size: 15.5px; font-weight: 700; }
.flow-step p { font-size: 12.5px; color: var(--muted); margin-top: 7px; line-height: 1.8; }

/* ---------- 界面预览（可切换） ---------- */
.showcase { position: relative; }
.showcase > input { position: absolute; opacity: 0; pointer-events: none; }
.shot-tabs { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; margin-bottom: 28px; }
.shot-tabs label {
    cursor: pointer; font-size: 13.5px; font-weight: 600; color: #52637a;
    padding: 9px 20px; border-radius: 999px; border: 1px solid var(--line); background: #fff;
    transition: all .2s;
}
.shot-tabs label:hover { border-color: #bcd0f2; color: var(--blue); }
#shot-1:checked ~ .shot-tabs label[for="shot-1"],
#shot-2:checked ~ .shot-tabs label[for="shot-2"],
#shot-3:checked ~ .shot-tabs label[for="shot-3"] { background: var(--blue); color: #fff; border-color: var(--blue); box-shadow: 0 8px 18px rgba(29,95,214,.22); }
.shot-panel { display: none; }
#shot-1:checked ~ .shot-panels .shot-panel.p1,
#shot-2:checked ~ .shot-panels .shot-panel.p2,
#shot-3:checked ~ .shot-panels .shot-panel.p3 { display: grid; }
.shot-panels { max-width: 980px; margin: 0 auto; }
.shot-panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: center;
    background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 34px;
    box-shadow: var(--shadow);
}
.shot-panel h3 { font-size: 21px; font-weight: 800; }
.shot-panel p { color: var(--muted); font-size: 14px; line-height: 1.9; margin-top: 12px; }
.shot-panel ul { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 9px; }
.shot-panel li { font-size: 13.5px; color: #3d506b; display: flex; gap: 9px; align-items: flex-start; }
.shot-panel li::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); margin-top: 8px; flex-shrink: 0; }
.stage {
    background: linear-gradient(150deg,#eef4fc,#e4f4f7); border-radius: 14px;
    padding: 26px; display: grid; place-items: center; min-height: 300px;
}
/* 手机示意 */
.phone {
    width: 208px; background: #fff; border: 7px solid #122a49; border-radius: 26px;
    box-shadow: 0 18px 36px rgba(13,43,78,.25); overflow: hidden; position: relative;
}
.phone::before { content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 68px; height: 10px; border-radius: 0 0 9px 9px; background: #122a49; z-index: 2; }
.phone-head { background: linear-gradient(120deg,#1d5fd6,#22b8cf); color: #fff; padding: 20px 12px 10px; font-size: 12px; font-weight: 700; }
.phone-screen { padding: 10px; display: grid; gap: 8px; }
.mp-card { border: 1px solid #e6edf7; border-radius: 9px; padding: 9px; background: #fbfdff; }
.mp-card b { display: block; font-size: 11px; color: #1e3a5f; }
.mp-card small { font-size: 9px; color: #94a3b8; }
.mp-line { height: 7px; border-radius: 4px; background: #e9eff7; }
.mp-line.s { width: 60%; }
.mp-field { display: flex; justify-content: space-between; align-items: center; font-size: 9.5px; color: #64748b; border-bottom: 1px dashed #e8eef7; padding: 4px 0; }
.mp-field i { width: 12px; height: 12px; border-radius: 3px; border: 1px solid #cbd5e1; }
.mp-btn { background: var(--blue); color: #fff; font-size: 10.5px; text-align: center; padding: 7px; border-radius: 7px; margin-top: 2px; }
/* 企微消息示意 */
.chat { width: 100%; max-width: 320px; background: #fff; border: 1px solid #dfe8f3; border-radius: 12px; overflow: hidden; box-shadow: 0 14px 30px rgba(13,43,78,.16); }
.chat-head { background: #f4f7fb; border-bottom: 1px solid #e8eef7; padding: 9px 12px; font-size: 11px; color: #475569; font-weight: 700; }
.chat-body { padding: 12px; background: #f7f9fc; display: grid; gap: 10px; }
.chat-avatar { display: flex; gap: 8px; align-items: flex-start; }
.chat-avatar i { width: 26px; height: 26px; border-radius: 6px; background: linear-gradient(140deg,#f59e0b,#f97316); flex-shrink: 0; }
.chat-bubble { background: #fff; border: 1px solid #e9eef6; border-radius: 4px 10px 10px 10px; padding: 10px; font-size: 10.5px; color: #334155; line-height: 1.7; }
.chat-bubble b { display: block; font-size: 11.5px; color: #b45309; margin-bottom: 5px; }
.chat-bubble .tag { display: inline-block; background: #fff1e0; color: #c2610a; border-radius: 4px; padding: 1px 6px; font-size: 9px; margin-bottom: 5px; }
.chat-bubble hr { border: 0; border-top: 1px solid #eef2f7; margin: 7px 0; }
.chat-bubble small { color: #94a3b8; font-size: 9px; }
.chat-reply { font-size: 10px; color: #64748b; padding-left: 34px; }
.shot-note { text-align: center; font-size: 12px; color: #9aa8bb; margin-top: 16px; }

/* ---------- 多县隔离 / 双端 ---------- */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.split h2 { font-size: clamp(25px,3vw,32px); font-weight: 800; line-height: 1.45; }
.split p { color: var(--muted); font-size: 15px; line-height: 2; margin-top: 16px; }
.check-list { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 13px; }
.check-list li { display: flex; gap: 11px; align-items: flex-start; font-size: 14px; color: #3d506b; }
.check-list svg { color: #16a34a; flex-shrink: 0; margin-top: 4px; }
.iso-board { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 24px; box-shadow: var(--shadow); }
.iso-title { font-size: 13px; font-weight: 700; color: #334155; margin-bottom: 16px; }
.iso-root { background: linear-gradient(120deg,#1d5fd6,#22b8cf); color: #fff; border-radius: 10px; padding: 11px 14px; font-size: 13px; font-weight: 700; text-align: center; }
.iso-line { height: 20px; width: 2px; background: #cbd9ec; margin: 0 auto; }
.iso-cols { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
.iso-col { border: 1px solid #e6edf7; border-radius: 11px; padding: 12px; background: #fbfdff; }
.iso-col b { font-size: 12.5px; color: #1e3a5f; }
.iso-col span { display: block; height: 6px; border-radius: 3px; background: #e9eff7; margin-top: 9px; }
.iso-col span.s { width: 72%; }
.iso-col em { display: block; font-style: normal; font-size: 10px; color: #16a34a; margin-top: 9px; }
.iso-foot { font-size: 11.5px; color: #94a3b8; text-align: center; margin-top: 14px; }

/* ---------- 预警通导流 banner ---------- */
.promo { padding: 20px 0 96px; }
.promo-box {
    position: relative; overflow: hidden; border-radius: 22px; padding: 48px 54px;
    background:
        radial-gradient(520px 300px at 88% 20%, rgba(245,158,11,.28), transparent 62%),
        linear-gradient(120deg,#0a2547,#123f72);
    color: #fff; display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center;
}
.promo-box::after {
    content: ""; position: absolute; right: -90px; bottom: -160px; width: 380px; height: 380px;
    border-radius: 50%; border: 1px solid rgba(255,255,255,.12); box-shadow: 0 0 0 60px rgba(255,255,255,.035);
}
.promo-tag { display: inline-block; font-size: 12px; letter-spacing: 1px; color: #ffd79a; border: 1px solid rgba(255,205,130,.4); border-radius: 999px; padding: 4px 12px; }
.promo-box h2 { font-size: 28px; font-weight: 800; margin: 16px 0 12px; }
.promo-box p { font-size: 14.5px; color: #c5d8ef; line-height: 1.9; max-width: 660px; }
.promo-box .btn { position: relative; z-index: 2; }

/* ---------- 结尾 CTA / 页脚 ---------- */
.cta { background: linear-gradient(160deg,#f2f7ff,#eaf6f8); border-top: 1px solid #e6eef8; text-align: center; padding: 76px 0; }
.cta h2 { font-size: clamp(25px,3vw,32px); font-weight: 800; }
.cta p { color: var(--muted); margin-top: 14px; font-size: 15px; }
.cta .hero-actions { justify-content: center; margin-bottom: 0; }
.site-footer { background: #081a31; color: #9fb2c9; padding: 52px 0 26px; font-size: 13px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 36px; }
.footer-brand .logo-mark { box-shadow: 0 0 0 1px rgba(255,255,255,.16), 0 4px 14px rgba(0,0,0,.28); }
.footer-brand .logo-text b { color: #fff; }
.footer-brand .logo-text small { color: #7f96b1; }
.footer-brand p { margin-top: 16px; font-size: 12.5px; line-height: 1.9; max-width: 300px; }
.footer-col b { display: block; color: #fff; font-size: 13.5px; margin-bottom: 14px; }
.footer-col a { display: block; padding: 4px 0; font-size: 12.5px; color: #9fb2c9; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.09); margin-top: 36px; padding-top: 20px; display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; font-size: 12px; color: #7089a6; }

/* ---------- 预警通内页 ---------- */
.crumb { font-size: 12.5px; color: #8fa1b8; padding: 18px 0 0; }
.crumb a:hover { color: var(--blue); }
.product-hero {
    position: relative; overflow: hidden;
    background: linear-gradient(150deg,#fff8ec 0%,#f2f8ff 52%,#eaf6fb 100%);
    border-bottom: 1px solid #e9eef7;
}
.product-hero::before {
    content: ""; position: absolute; right: -120px; top: -140px; width: 520px; height: 520px; border-radius: 50%;
    background: radial-gradient(circle, rgba(245,158,11,.14), transparent 65%);
}
.product-hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 50px; align-items: center; padding: 66px 0 74px; }
.product-badge { display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px; font-weight: 700; color: #b45309; background: #fff3de; border: 1px solid #ffdfa8; border-radius: 999px; padding: 6px 14px; }
.product-hero h1 { font-size: clamp(32px,3.8vw,46px); font-weight: 800; line-height: 1.3; margin: 22px 0 18px; }
.product-hero h1 em { font-style: normal; color: var(--blue); }
.product-hero p.lead { font-size: 16px; line-height: 2; color: #4c5e77; max-width: 560px; }
.product-hero .hero-points { color: #6b7c93; }
.product-hero .hero-points svg { color: #16a34a; }
.product-hero .hero-actions { margin-bottom: 22px; }
.trial-note { font-size: 13px; color: #7b8ca3; }
.trial-note b { color: #b45309; }
.feature-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.feature-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 24px; box-shadow: var(--shadow-sm); }
.feature-card .mod-icon { width: 42px; height: 42px; margin-bottom: 14px; }
.feature-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 13.5px; color: var(--muted); line-height: 1.85; }
.steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; counter-reset: step; }
.step-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 22px; }
.step-card .no { font-size: 12px; font-weight: 800; color: var(--blue); letter-spacing: 1px; }
.step-card h3 { font-size: 16px; font-weight: 700; margin: 10px 0 8px; }
.step-card p { font-size: 13px; color: var(--muted); line-height: 1.8; }
.plan-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.plan-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 28px; box-shadow: var(--shadow-sm); }
.plan-card h3 { font-size: 18px; font-weight: 700; }
.plan-price { font-size: 28px; font-weight: 800; color: var(--blue); margin: 14px 0; }
.plan-price span { font-size: 13px; font-weight: 400; color: #8a99ad; }
.plan-card p { font-size: 13.5px; color: var(--muted); line-height: 1.85; }
.scene-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.scene-card { border-radius: 14px; padding: 26px; background: #fff; border: 1px solid var(--line); }
.scene-card .scene-no { font-size: 12px; font-weight: 800; color: #b45309; letter-spacing: 1px; }
.scene-card h3 { font-size: 17px; font-weight: 700; margin: 10px 0 8px; }
.scene-card p { font-size: 13.5px; color: var(--muted); line-height: 1.85; }
.product-cta { background: linear-gradient(120deg,#0a2547,#123f72); color: #fff; text-align: center; border-radius: 20px; padding: 54px 24px; }
.product-cta h2 { font-size: 28px; font-weight: 800; }
.product-cta p { color: #c5d8ef; margin: 14px 0 26px; font-size: 15px; }
.product-cta .btn-light { margin: 0 6px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1000px) {
    .hero-inner, .product-hero-inner { grid-template-columns: 1fr; gap: 44px; padding-bottom: 90px; }
    .hero-visual { max-width: 560px; margin: 0 auto; width: 100%; }
    .browser { transform: none; }
    .fc-1 { left: -8px; } .fc-2 { right: -6px; }
    .mod-grid, .feature-grid, .scene-grid { grid-template-columns: repeat(2,1fr); }
    .split { grid-template-columns: 1fr; gap: 32px; }
    .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
    .promo-box { grid-template-columns: 1fr; padding: 40px 34px; }
    .shot-panel { grid-template-columns: 1fr; gap: 22px; }
}
@media (max-width: 760px) {
    .container { width: calc(100% - 32px); }
    .site-nav, .nav-divider { display: none; }
    .m-nav { display: block; }
    .hero-inner { padding-top: 56px; padding-bottom: 80px; }
    .hero h1 { font-size: 32px; }
    .stats { margin-top: -40px; }
    .stats-box { grid-template-columns: repeat(2,1fr); }
    .stat { padding: 18px; border-bottom: 1px solid var(--line); }
    .stat:nth-child(2) { border-right: 0; }
    .stat:nth-child(3), .stat:nth-child(4) { border-bottom: 0; }
    .stat b { font-size: 24px; }
    .section { padding: 64px 0; }
    .section-head { margin-bottom: 34px; }
    .mod-grid, .feature-grid, .scene-grid, .plan-grid { grid-template-columns: 1fr; }
    .mod-card p { min-height: 0; }
    .flow { grid-template-columns: 1fr; gap: 22px; }
    .flow-step:not(:last-child)::after { display: none; }
    .flow-num { margin-bottom: 10px; }
    .steps { grid-template-columns: repeat(2,1fr); }
    .shot-panel { padding: 22px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-bottom { flex-direction: column; }
    .product-hero-inner { padding: 46px 0 56px; }
    .promo { padding-bottom: 64px; }
    .promo-box h2 { font-size: 23px; }
}
@media (max-width: 460px) {
    .hero-points { gap: 12px; }
    .hero-actions .btn { width: 100%; }
    .steps { grid-template-columns: 1fr; }
    .app-shell { grid-template-columns: 72px 1fr; }
    .kpis { grid-template-columns: repeat(2,1fr); }
    .float-card { display: none; }
    .footer-grid { grid-template-columns: 1fr; }
}