/* ==========================================================================
   博思凯 BOSK · 官网 V2 设计系统
   定位：场景化 B2B 采购站。视觉服务于「找得到问题、看得懂证据、走得通下一步」
   与旧版 style.css 完全独立，旧详情页继续沿用旧样式，互不干扰。
   ========================================================================== */

:root{
  /* 品牌（延续既有品牌资产） */
  --brand:#0B5CFF;
  --brand-dark:#0842C4;
  --brand-050:#EAF1FF;
  --brand-100:#DCE8FF;

  /* 语义色 */
  --verify:#0E9F6E;          /* 已核验 / 有证据 */
  --verify-bg:#E8F7F1;
  --caution:#B26A00;         /* 口径提示 / 需确认 */
  --caution-bg:#FFF5E6;

  /* 中性 */
  --ink:#0B1526;
  --text:#17243C;
  --text-2:#536583;
  --text-3:#8493AC;
  --line:#E1E8F3;
  --line-2:#EDF1F8;
  --bg:#FFFFFF;
  --bg-soft:#F6F8FC;
  --bg-soft-2:#EEF3FB;
  --dark:#071426;
  --dark-2:#0D2038;
  --on-dark:#E9F0FC;
  --on-dark-2:#A6B8D4;

  /* 尺度 */
  --container:1240px;
  --r-sm:8px;
  --r:14px;
  --r-lg:20px;
  --header-h:72px;

  --shadow-sm:0 2px 10px rgba(16,38,80,.05);
  --shadow:0 10px 32px rgba(16,38,80,.08);
  --shadow-lg:0 24px 64px rgba(8,24,56,.14);
  --shadow-brand:0 12px 30px rgba(11,92,255,.22);

  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
/* hidden 属性优先级必须高于组件 display，否则场景面板/表单分页会同时展开 */
[hidden]{display:none!important}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--header-h) + 18px)}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.32;letter-spacing:-.015em;color:var(--ink)}
p{margin:0}
button,input,select,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font-size:15px}
table{border-collapse:collapse;width:100%}
svg{flex:none}
::selection{background:var(--brand);color:#fff}

:focus-visible{outline:3px solid var(--brand);outline-offset:3px;border-radius:3px}
.skip-link{position:absolute;left:-9999px;top:0;z-index:999;background:var(--brand);color:#fff;padding:12px 20px;border-radius:0 0 8px 0}
.skip-link:focus{left:0}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 28px}
.section{padding:92px 0;position:relative}
.section--tight{padding:64px 0}
.section--soft{background:var(--bg-soft)}
.section--soft2{background:var(--bg-soft-2)}
.section--dark{background:var(--dark);color:var(--on-dark)}
.section--dark h1,.section--dark h2,.section--dark h3,.section--dark h4{color:#fff}
.section--dark p{color:var(--on-dark-2)}

/* ============ 通用排版 ============ */
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:700;
  letter-spacing:.15em;text-transform:uppercase;color:var(--brand);margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px}
.eyebrow--plain::before{display:none}
.eyebrow--light{color:#7FB6FF}
.eyebrow--light::before{background:#7FB6FF}
.sec-head{max-width:820px;margin:0 auto 52px;text-align:center}
.sec-head h2{font-size:clamp(28px,3.3vw,42px)}
.sec-head p{margin-top:16px;color:var(--text-2);font-size:17px;line-height:1.85}
.sec-head--left{margin-left:0;text-align:left;max-width:760px}
.hl{background:linear-gradient(transparent 62%,#CFE0FF 62%);padding:0 2px}
.lead{font-size:18px;line-height:1.85;color:var(--text-2)}
.small{font-size:13px;color:var(--text-3);line-height:1.7}

/* ============ 口径徽章（V2 核心设计语言） ============ */
.badge{
  display:inline-flex;align-items:center;gap:5px;vertical-align:middle;
  font-size:11px;font-weight:700;line-height:1.5;padding:2px 8px;border-radius:5px;
  letter-spacing:.01em;white-space:nowrap;
}
.badge--verify{background:var(--verify-bg);color:var(--verify);border:1px solid #C4EBDA}
.badge--caution{background:var(--caution-bg);color:var(--caution);border:1px solid #F5DFB8}
.badge--neutral{background:#F0F4FA;color:var(--text-2);border:1px solid var(--line)}
.badge--brand{background:var(--brand-050);color:var(--brand-dark);border:1px solid #C9DBFF}
.badge--ghost{background:rgba(255,255,255,.1);color:#CFE0FF;border:1px solid rgba(255,255,255,.2)}
.badge svg{width:11px;height:11px}

/* 口径注释条 */
.note-strip{
  display:flex;gap:12px;align-items:flex-start;padding:16px 18px;border-radius:var(--r-sm);
  background:var(--caution-bg);border:1px solid #F3E0BE;color:#7A4C05;
  font-size:13px;line-height:1.75;
}
.note-strip svg{width:17px;height:17px;margin-top:3px;color:var(--caution)}
.note-strip b{color:#6B4204}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:46px;padding:11px 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;line-height:1.3;
  border:1.5px solid transparent;transition:all .22s var(--ease);white-space:nowrap;
}
.btn svg{width:16px;height:16px;transition:transform .22s var(--ease)}
.btn:hover svg.arrow{transform:translateX(4px)}
.btn--primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-brand)}
.btn--primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 16px 36px rgba(11,92,255,.3)}
.btn--dark{background:var(--ink);color:#fff}
.btn--dark:hover{background:#22334F;transform:translateY(-2px)}
.btn--ghost{background:transparent;color:var(--brand-dark);border-color:#C6D7F5}
.btn--ghost:hover{background:var(--brand-050);border-color:var(--brand)}
.btn--white{background:#fff;color:var(--brand-dark)}
.btn--white:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.btn--outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn--outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn--lg{min-height:54px;padding:15px 28px;font-size:16px;border-radius:10px}
.btn--sm{min-height:38px;padding:8px 16px;font-size:13.5px}
.btn--block{width:100%}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--dark);color:var(--on-dark-2);font-size:12.5px;border-bottom:1px solid rgba(255,255,255,.09)}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:38px;flex-wrap:wrap}
.topbar-l{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.topbar-l .sep{width:1px;height:12px;background:rgba(255,255,255,.18)}
.topbar a{color:var(--on-dark-2)}
.topbar a:hover{color:#fff}
.topbar b{color:#fff;font-weight:600}
.topbar-r{display:flex;align-items:center;gap:16px}
.topbar .ic{width:13px;height:13px;vertical-align:-2px;margin-right:5px;color:#7FB6FF}

/* ============ 导航 ============ */
.header{
  position:sticky;top:0;z-index:80;background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line);
}
.header .container{display:flex;align-items:center;gap:26px;height:var(--header-h)}
.logo{display:inline-flex;align-items:center;gap:11px;flex:none}
.logo-mark{
  width:38px;height:38px;border-radius:9px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:15px;letter-spacing:-.04em;
  box-shadow:0 5px 14px rgba(11,92,255,.28);
}
.logo-txt{display:flex;flex-direction:column;line-height:1.18}
.logo-txt strong{font-size:17px;color:var(--ink);letter-spacing:.01em}
.logo-txt span{font-size:9.5px;letter-spacing:.13em;color:var(--text-3);font-weight:600;margin-top:3px}
.nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav>li{position:relative}
.nav>li>a{
  display:inline-flex;align-items:center;gap:5px;padding:10px 13px;border-radius:7px;
  font-size:14.5px;font-weight:600;color:var(--text);white-space:nowrap;
}
.nav>li>a:hover,.nav>li.active>a{color:var(--brand);background:var(--brand-050)}
.nav .caret{width:11px;height:11px;opacity:.6}
.dropdown{
  position:absolute;top:calc(100% + 10px);left:0;min-width:238px;padding:8px;
  background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:all .2s var(--ease);
}
.nav>li:hover .dropdown,.nav>li:focus-within .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{display:block;padding:9px 12px;border-radius:7px;font-size:13.5px;color:var(--text-2)}
.dropdown a:hover{background:var(--bg-soft);color:var(--brand)}
.dropdown a small{display:block;color:var(--text-3);font-size:11.5px;margin-top:1px}
.header-actions{display:flex;align-items:center;gap:14px;flex:none}
.header-hotline{display:flex;flex-direction:column;line-height:1.2}
.header-hotline span{font-size:10.5px;color:var(--text-3)}
.header-hotline b{font-size:15px;color:var(--ink);letter-spacing:.01em}
.lang{display:flex;border:1px solid var(--line);border-radius:6px;overflow:hidden;font-size:12px;font-weight:700}
.lang a{padding:5px 9px;color:var(--text-3)}
.lang a.active{background:var(--brand);color:#fff}
.burger{display:none;width:42px;height:42px;border-radius:8px;border:1px solid var(--line);padding:11px 9px}
.burger span{display:block;height:2px;background:var(--ink);border-radius:2px;margin:4px 0;transition:all .25s var(--ease)}

/* 移动端菜单 */
.mnav{position:fixed;inset:0;z-index:95;background:#fff;overflow-y:auto;padding:76px 24px 40px;display:none}
.mnav.open{display:block}
.mnav>ul>li{border-bottom:1px solid var(--line-2)}
.mnav>ul>li>a{display:flex;justify-content:space-between;align-items:center;padding:16px 4px;font-size:17px;font-weight:700;color:var(--ink)}
.mnav .sub{padding:0 0 12px 14px}
.mnav .sub a{display:block;padding:9px 0;font-size:14px;color:var(--text-2)}
.mnav-foot{display:grid;gap:10px;margin-top:28px}

/* ============ 面包屑 ============ */
.crumb{background:var(--bg-soft);border-bottom:1px solid var(--line);padding:14px 0;font-size:13px;color:var(--text-3)}
.crumb .container{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.crumb a:hover{color:var(--brand)}
.crumb .cur{color:var(--text);font-weight:600}
.crumb svg{width:12px;height:12px;opacity:.5}

/* ============ 页头（内页） ============ */
.page-hero{background:linear-gradient(160deg,#F2F6FF 0%,#FFFFFF 68%);border-bottom:1px solid var(--line);padding:64px 0 58px}
.page-hero h1{font-size:clamp(30px,3.8vw,46px);max-width:900px}
.page-hero .lead{margin-top:18px;max-width:780px;font-size:17px}
.page-hero .hero-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.page-hero .hero-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:48px;align-items:center}
.hero-facts{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow-sm)}
.hero-facts h4{font-size:13px;color:var(--text-3);letter-spacing:.06em;text-transform:uppercase;margin-bottom:14px}
.hero-facts ul li{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:13.5px}
.hero-facts ul li:last-child{border-bottom:0}
.hero-facts ul li span{color:var(--text-2)}
.hero-facts ul li b{color:var(--ink);text-align:right}

/* ============ 首页 Hero ============ */
.hero{position:relative;background:var(--dark);color:#fff;overflow:hidden;padding:76px 0 0}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(760px 420px at 82% 12%,rgba(11,92,255,.28),transparent 68%),
    radial-gradient(520px 380px at 12% 92%,rgba(0,180,190,.14),transparent 70%),
    linear-gradient(180deg,#071426 0%,#0A1B33 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;opacity:.16;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,#000 0%,transparent 88%);
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:60px;align-items:center;padding-bottom:70px}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;padding:7px 13px;border-radius:100px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);
  font-size:12.5px;color:#D5E5FF;font-weight:600;letter-spacing:.02em;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:#37D6A0;box-shadow:0 0 0 4px rgba(55,214,160,.18)}
.hero h1{color:#fff;font-size:clamp(34px,3.9vw,50px);line-height:1.24;margin-top:24px;letter-spacing:-.03em}
.hero h1 .grad{background:linear-gradient(100deg,#5FA8FF 0%,#54E0D0 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .hero-sub{margin-top:22px;font-size:17px;line-height:1.9;color:#B9CBE6;max-width:610px}
.hero .hero-sub b{color:#fff;font-weight:600}

/* 首屏四问 —— 报告要求：明确回答为谁/什么场景/什么组合/下一步 */
.hero-answers{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.13);border-radius:12px;overflow:hidden;margin-top:30px}
.hero-answers div{background:rgba(9,25,46,.86);padding:15px 17px}
.hero-answers .qa-k{display:block;font-size:11px;color:#7FA5D8;letter-spacing:.08em;font-weight:700;margin-bottom:5px}
.hero-answers .qa-v{display:block;font-size:14px;color:#EAF2FF;font-weight:600;line-height:1.55}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.hero-trust{display:flex;gap:24px;flex-wrap:wrap;margin-top:28px;font-size:12.5px;color:#91A9CC}
.hero-trust span{display:inline-flex;align-items:center;gap:6px}
.hero-trust svg{width:14px;height:14px;color:#4BD3A2}

/* 首屏右侧证据卡 */
.evidence-card{background:#fff;border-radius:var(--r-lg);padding:28px;box-shadow:var(--shadow-lg);color:var(--text)}
.evidence-card .ec-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.evidence-card .ec-head h3{font-size:16px}
.evidence-card .ec-head p{font-size:12px;color:var(--text-3);margin-top:4px}
.ec-kpis{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:18px 0}
.ec-kpis>div{background:#fff;padding:15px 14px}
.ec-kpis b{display:block;font-size:25px;line-height:1.2;color:var(--ink);letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.ec-kpis b i{font-size:14px;font-style:normal;color:var(--brand);font-weight:700}
.ec-kpis span{font-size:11.5px;color:var(--text-2);display:block;margin-top:4px}
.ec-list li{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--text-2);padding:7px 0}
.ec-list li svg{width:15px;height:15px;color:var(--verify);margin-top:3px}
.ec-list li b{color:var(--ink)}
.ec-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:11.5px;color:var(--text-3);line-height:1.7}
.ec-foot a{color:var(--brand);font-weight:600}

/* Hero 底部信任条 */
.hero-bar{border-top:1px solid rgba(255,255,255,.11);background:rgba(4,15,30,.55)}
.hero-bar .container{display:flex;align-items:center;gap:0;flex-wrap:wrap;padding-top:18px;padding-bottom:18px}
.hero-bar .hb-item{flex:1;min-width:170px;display:flex;align-items:center;gap:11px;padding:6px 18px;border-right:1px solid rgba(255,255,255,.12)}
.hero-bar .hb-item:first-child{padding-left:0}
.hero-bar .hb-item:last-child{border-right:0}
.hero-bar svg{width:19px;height:19px;color:#5FA8FF}
.hero-bar b{display:block;font-size:13px;color:#fff;font-weight:600}
.hero-bar small{display:block;font-size:11px;color:#8CA4C7;margin-top:1px}

/* ============ 场景选择器（第二屏核心） ============ */
.scene-picker{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.scene-card{
  display:flex;flex-direction:column;text-align:left;background:#fff;border:1.5px solid var(--line);
  border-radius:var(--r);padding:22px 20px;min-height:238px;transition:all .25s var(--ease);
}
.scene-card:hover,.scene-card.is-active{border-color:var(--brand);box-shadow:var(--shadow);transform:translateY(-3px)}
.scene-card.is-active{background:linear-gradient(180deg,#F7FAFF,#fff)}
.scene-card .sc-ico{width:42px;height:42px;border-radius:10px;background:var(--brand-050);color:var(--brand);display:grid;place-items:center;margin-bottom:16px}
.scene-card .sc-ico svg{width:22px;height:22px}
.scene-card.is-active .sc-ico{background:var(--brand);color:#fff}
.scene-card h3{font-size:16px;margin-bottom:8px}
.scene-card .sc-q{font-size:12.5px;color:var(--text-2);line-height:1.7;flex:1}
.scene-card .sc-go{display:flex;align-items:center;gap:5px;font-size:12.5px;font-weight:700;color:var(--brand);margin-top:14px}
.scene-card .sc-go svg{width:13px;height:13px}
.scene-detail{
  margin-top:20px;background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:28px 30px;box-shadow:var(--shadow-sm);display:grid;grid-template-columns:1fr 1fr;gap:34px;
}
.scene-detail h3{font-size:21px;margin-bottom:10px}
.scene-detail .sd-desc{font-size:14px;color:var(--text-2);line-height:1.85}
.scene-detail h4{font-size:12px;color:var(--text-3);letter-spacing:.08em;text-transform:uppercase;margin:20px 0 10px}
.chip-row{display:flex;gap:8px;flex-wrap:wrap}
.chip{font-size:12.5px;padding:5px 11px;border-radius:6px;background:var(--bg-soft);border:1px solid var(--line);color:var(--text-2)}
.chip--brand{background:var(--brand-050);border-color:#CBDDFF;color:var(--brand-dark);font-weight:600}
.sd-steps{counter-reset:sd}
.sd-steps li{position:relative;padding-left:28px;font-size:13.5px;color:var(--text-2);margin-bottom:11px;line-height:1.7}
.sd-steps li::before{
  counter-increment:sd;content:counter(sd);position:absolute;left:0;top:2px;
  width:19px;height:19px;border-radius:50%;background:var(--brand-050);color:var(--brand-dark);
  font-size:11px;font-weight:800;display:grid;place-items:center;
}
.sd-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}

/* ============ 决策路径 ============ */
.journey{display:grid;grid-template-columns:repeat(7,1fr);gap:0;position:relative;margin-top:8px}
.journey::before{content:"";position:absolute;top:22px;left:6%;right:6%;height:2px;background:linear-gradient(90deg,var(--brand-100),var(--brand),var(--brand-100))}
.j-item{position:relative;text-align:center;padding:0 8px}
.j-item .dot{
  width:44px;height:44px;margin:0 auto 14px;border-radius:50%;background:#fff;border:2px solid var(--brand);
  color:var(--brand-dark);display:grid;place-items:center;font-size:14px;font-weight:800;box-shadow:0 0 0 7px #fff;
}
.j-item h4{font-size:13.5px;margin-bottom:6px}
.j-item p{font-size:11.5px;color:var(--text-3);line-height:1.6}
.j-item a{display:inline-block;margin-top:8px;font-size:11.5px;color:var(--brand);font-weight:700}

/* ============ 通用卡片 / 网格 ============ */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--shadow-sm);transition:all .25s var(--ease)}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.card h3{font-size:17px;margin-bottom:10px}
.card p{font-size:13.5px;color:var(--text-2);line-height:1.8}
.card .ico{width:44px;height:44px;border-radius:11px;background:var(--brand-050);color:var(--brand);display:grid;place-items:center;margin-bottom:18px}
.card .ico svg{width:22px;height:22px}
.card-num{font-size:11px;font-weight:800;color:var(--brand);letter-spacing:.1em}

/* 数字 + 口径 */
.metric{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px 22px}
.metric b{display:block;font-size:34px;line-height:1.15;color:var(--ink);letter-spacing:-.035em;font-variant-numeric:tabular-nums}
.metric b i{font-size:17px;font-style:normal;color:var(--brand);font-weight:700}
.metric .m-label{font-size:13.5px;color:var(--text);font-weight:600;margin-top:8px}
.metric .m-note{font-size:11.5px;color:var(--text-3);margin-top:8px;line-height:1.6;padding-top:8px;border-top:1px dashed var(--line)}

/* ============ 证据 / 案例卡（报告统一字段） ============ */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:all .25s var(--ease)}
.case-card:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:#C9DBFF}
.case-media{position:relative;height:168px;overflow:hidden;background:var(--bg-soft-2)}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.case-card:hover .case-media img{transform:scale(1.05)}
.case-media .cm-tag{position:absolute;left:12px;top:12px}
.case-body{padding:20px;flex:1;display:flex;flex-direction:column}
.case-body h3{font-size:16px;margin-bottom:6px}
.case-body .cb-sub{font-size:12px;color:var(--text-3);margin-bottom:14px}
.case-fields{display:grid;gap:0;font-size:12.5px;margin-bottom:16px}
.case-fields div{display:grid;grid-template-columns:72px 1fr;gap:8px;padding:6px 0;border-bottom:1px dashed var(--line-2)}
.case-fields dt{color:var(--text-3)}
.case-fields dd{margin:0;color:var(--text);line-height:1.6}
.case-fields .cf-result dd{color:var(--verify);font-weight:700}
.case-foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;gap:10px;padding-top:14px;border-top:1px solid var(--line)}
.case-foot .cf-link{font-size:12.5px;font-weight:700;color:var(--brand)}
.case-foot .cf-auth{font-size:11px;color:var(--text-3)}

/* 证据字段说明表 */
.spec-table{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.spec-table table{font-size:13.5px}
.spec-table th,.spec-table td{text-align:left;padding:13px 18px;border-bottom:1px solid var(--line-2);vertical-align:top;line-height:1.7}
.spec-table thead th{background:var(--bg-soft);font-size:12px;color:var(--text-2);letter-spacing:.05em;font-weight:700}
.spec-table tbody th{width:150px;color:var(--ink);font-weight:600;background:#FCFDFF}
.spec-table tbody td{color:var(--text-2)}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:0}

/* ============ 产品选型器 ============ */
.selector{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);overflow:hidden}
.selector-top{padding:26px 30px;background:linear-gradient(120deg,#F4F8FF,#fff);border-bottom:1px solid var(--line)}
.selector-top h3{font-size:20px}
.selector-top p{font-size:13.5px;color:var(--text-2);margin-top:7px}
.selector-form{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:26px 30px}
.field label{display:block;font-size:12.5px;font-weight:700;color:var(--text);margin-bottom:8px}
.field select,.field input,.field textarea{
  width:100%;min-height:44px;padding:10px 12px;border:1.5px solid var(--line);border-radius:var(--r-sm);
  background:#fff;color:var(--text);outline:none;transition:border-color .2s;
}
.field select:focus,.field input:focus,.field textarea:focus{border-color:var(--brand)}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field .hint{font-size:11px;color:var(--text-3);margin-top:6px;line-height:1.6}
.selector-result{padding:24px 30px;background:var(--bg-soft);border-top:1px solid var(--line)}
.selector-result .sr-empty{font-size:13.5px;color:var(--text-3)}
.sr-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.sr-head h4{font-size:16px}
.sr-list{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.sr-item{background:#fff;border:1px solid var(--line);border-radius:10px;padding:15px 16px}
.sr-item b{font-size:14px;color:var(--ink)}
.sr-item p{font-size:12px;color:var(--text-2);margin-top:5px;line-height:1.65}
.sr-item .sr-why{display:inline-block;margin-top:9px;font-size:11px;color:var(--verify);font-weight:700}

/* 参数卡 */
.param-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.param-grid>div{background:#fff;padding:18px}
.param-grid dt{font-size:11.5px;color:var(--text-3);margin-bottom:6px}
.param-grid dd{margin:0;font-size:14px;font-weight:600;color:var(--ink);line-height:1.6}

/* 产品对比表 */
.compare{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:#fff}
.compare table{min-width:720px;font-size:13px}
.compare th,.compare td{padding:14px 16px;border-bottom:1px solid var(--line-2);text-align:left;vertical-align:top}
.compare thead th{background:var(--bg-soft);font-size:13px;font-weight:700;color:var(--ink)}
.compare thead th:first-child{width:150px}
.compare tbody th{font-weight:600;color:var(--text-2);background:#FCFDFF}
.compare .yes{color:var(--verify);font-weight:700}
.compare .no{color:var(--text-3)}

/* ============ 资料下载 ============ */
.res-card{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px;transition:all .25s var(--ease)}
.res-card:hover{border-color:var(--brand);box-shadow:var(--shadow-sm)}
.res-ico{width:42px;height:42px;border-radius:9px;background:#FFF1E8;color:#D2691E;display:grid;place-items:center;flex:none}
.res-ico svg{width:21px;height:21px}
.res-card h3{font-size:15px;margin-bottom:5px}
.res-card p{font-size:12.5px;color:var(--text-2);line-height:1.7}
.res-card .res-meta{display:flex;gap:10px;align-items:center;margin-top:12px;font-size:11.5px;color:var(--text-3)}
.res-card .res-meta a{color:var(--brand);font-weight:700}

/* ============ FAQ ============ */
.faq-list{max-width:900px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;text-align:left;padding:20px 4px;font-size:16px;font-weight:700;color:var(--ink)}
.faq-q:hover{color:var(--brand)}
.faq-q .ic{width:26px;height:26px;border-radius:50%;background:var(--bg-soft);display:grid;place-items:center;font-size:17px;color:var(--brand);font-weight:400;transition:all .25s var(--ease);flex:none}
.faq-item.open .faq-q .ic{background:var(--brand);color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease)}
.faq-a > div{padding:0 46px 22px 4px;font-size:14px;color:var(--text-2);line-height:1.9}

/* ============ 三类 CTA 分流 ============ */
.cta-split{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.cta-split .ct-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;display:flex;flex-direction:column}
.cta-split .ct-card.primary{border-color:var(--brand);box-shadow:var(--shadow)}
.cta-split .ct-tag{font-size:11px;font-weight:800;letter-spacing:.1em;color:var(--brand);text-transform:uppercase}
.cta-split h3{font-size:18px;margin:12px 0 8px}
.cta-split p{font-size:13px;color:var(--text-2);line-height:1.75;flex:1}
.cta-split ul{margin:16px 0 20px;display:grid;gap:7px}
.cta-split ul li{font-size:12.5px;color:var(--text-2);display:flex;gap:8px}
.cta-split ul li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand);margin-top:9px;flex:none}

/* ============ 表单 ============ */
.form-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);overflow:hidden}
.form-head{padding:28px 30px;border-bottom:1px solid var(--line);background:linear-gradient(120deg,#F4F8FF,#fff)}
.form-head h2{font-size:22px}
.form-head p{font-size:13.5px;color:var(--text-2);margin-top:8px}
.form-body{padding:28px 30px}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.form-grid .full{grid-column:1/-1}
.req::after{content:" *";color:#D64545}
.form-note{display:flex;gap:10px;align-items:flex-start;background:var(--bg-soft);border-radius:var(--r-sm);padding:14px 16px;font-size:12px;color:var(--text-2);line-height:1.7;margin-top:22px}
.form-note svg{width:15px;height:15px;color:var(--brand);margin-top:2px;flex:none}
.form-submit{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:22px}
.form-msg{font-size:13px;padding:12px 16px;border-radius:var(--r-sm);margin-top:18px;display:none}
.form-msg.ok{display:block;background:var(--verify-bg);color:#0A7A54;border:1px solid #C4EBDA}
.form-msg.err{display:block;background:#FDEEEE;color:#B33535;border:1px solid #F5CFCF}
.tabbar{display:flex;gap:4px;border-bottom:1px solid var(--line);padding:0 30px;overflow-x:auto}
.tabbar button{padding:16px 18px;font-size:14px;font-weight:700;color:var(--text-3);border-bottom:3px solid transparent;white-space:nowrap}
.tabbar button.active{color:var(--brand);border-bottom-color:var(--brand)}

/* ============ CTA 大条 ============ */
.big-cta{background:linear-gradient(115deg,#0846D6 0%,#0B5CFF 55%,#1683E8 100%);color:#fff;border-radius:var(--r-lg);padding:48px 52px;position:relative;overflow:hidden}
.big-cta::after{content:"";position:absolute;right:-70px;top:-90px;width:340px;height:340px;border-radius:50%;border:1px solid rgba(255,255,255,.16);box-shadow:0 0 0 60px rgba(255,255,255,.045),0 0 0 130px rgba(255,255,255,.03)}
.big-cta .container{padding:0;position:relative;z-index:2;display:flex;justify-content:space-between;align-items:center;gap:36px;flex-wrap:wrap}
.big-cta h2{color:#fff;font-size:clamp(26px,3vw,36px)}
.big-cta p{color:#D6E6FF;margin-top:12px;font-size:15.5px;max-width:640px;line-height:1.8}
.big-cta .bc-actions{display:flex;gap:12px;flex-wrap:wrap}
.big-cta .bc-trust{font-size:12px;color:#BFD6FF;margin-top:16px}

/* ============ 页脚 ============ */
.footer{background:var(--dark);color:var(--on-dark-2);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:48px}
.footer .brand-blk p{font-size:13px;line-height:1.85;margin-top:18px;max-width:330px}
.footer h4{font-size:14px;color:#fff;margin-bottom:18px}
.footer ul li{margin-bottom:10px;font-size:13px}
.footer ul a:hover{color:#fff}
.footer .f-contact li{display:flex;gap:10px;line-height:1.7}
.footer .f-contact svg{width:15px;height:15px;color:#5FA8FF;margin-top:4px;flex:none}
.footer .f-contact b{color:#fff;font-size:14px}
.footer .f-ver{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px}
.footer-bottom a:hover{color:#fff}
.footer-legal{font-size:11.5px;color:#7C92B4;line-height:1.8;padding-bottom:24px;max-width:1000px}

/* ============ 悬浮咨询条（统一、不堆叠） ============ */
.float-cta{position:fixed;right:20px;bottom:24px;z-index:70;display:flex;flex-direction:column;gap:9px;align-items:flex-end}
.float-cta .fc-main{
  display:inline-flex;align-items:center;gap:9px;background:var(--brand);color:#fff;
  padding:12px 18px;border-radius:100px;font-size:14px;font-weight:700;box-shadow:0 10px 28px rgba(11,92,255,.36);
}
.float-cta .fc-main:hover{background:var(--brand-dark);transform:translateY(-2px)}
.float-cta .fc-main svg{width:17px;height:17px}
.float-cta .fc-tel{display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);padding:9px 15px;border-radius:100px;font-size:12.5px;font-weight:700;color:var(--ink);box-shadow:var(--shadow)}
.float-cta .fc-tel svg{width:14px;height:14px;color:var(--brand)}
.float-cta .fc-top{width:38px;height:38px;border-radius:50%;background:#fff;border:1px solid var(--line);display:grid;place-items:center;box-shadow:var(--shadow);color:var(--text-2)}
.float-cta .fc-top svg{width:16px;height:16px}
.mobile-bar{display:none}

/* ============ 动效 ============ */
html.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
html.js .reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .nav>li>a{padding:10px 9px;font-size:13.5px}
  .header .container{gap:16px}
  .header-hotline{display:none}
  .scene-picker{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .param-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr}
  .footer-grid>div:last-child{grid-column:1/-1}
  .journey{grid-template-columns:repeat(4,1fr);row-gap:26px}
  .journey::before{display:none}
}
@media (max-width:980px){
  .nav,.header-actions .btn,.lang{display:none}
  .burger{display:block;margin-left:auto}
  .hero-grid{grid-template-columns:1fr;gap:38px;padding-bottom:52px}
  .hero .hero-grid{padding-bottom:46px}
  .evidence-card{max-width:560px}
  .page-hero .hero-grid{grid-template-columns:1fr;gap:28px}
  .scene-picker{grid-template-columns:repeat(2,1fr)}
  .scene-detail{grid-template-columns:1fr;gap:20px;padding:24px}
  .grid-3,.case-grid,.cta-split{grid-template-columns:repeat(2,1fr)}
  .selector-form{grid-template-columns:repeat(2,1fr)}
  .sr-list{grid-template-columns:repeat(2,1fr)}
  .big-cta{padding:38px 30px}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid>div:last-child{grid-column:auto}
}
@media (max-width:720px){
  body{font-size:15px}
  .container{padding:0 18px}
  .section{padding:60px 0}
  .section--tight{padding:44px 0}
  .topbar{display:none}
  .header .container{height:60px}
  :root{--header-h:60px}
  .logo-mark{width:34px;height:34px;font-size:13px}
  .logo-txt strong{font-size:15px}
  .hero{padding-top:44px}
  .hero h1{font-size:clamp(23px,6.3vw,40px)}
  .hero .hero-sub{font-size:15px}
  .hero-answers{display:none}
  .hero-cta .btn{width:100%}
  .hero-bar .hb-item{min-width:50%;flex:0 0 50%;border-right:0;padding:8px 0}
  .hero-bar .hb-item:first-child{padding-left:0}
  .scene-picker{grid-template-columns:1fr}
  .scene-card{min-height:0}
  .grid-2,.grid-3,.grid-4,.case-grid,.cta-split,.form-grid,.param-grid{grid-template-columns:1fr}
  .form-grid .full{grid-column:auto}
  .journey{grid-template-columns:repeat(2,1fr);row-gap:22px}
  .sec-head{margin-bottom:34px}
  .sec-head h2{font-size:26px}
  .sec-head p{font-size:15px}
  .selector-form{grid-template-columns:1fr;padding:20px}
  .selector-top,.selector-result{padding:20px}
  .sr-list{grid-template-columns:1fr}
  .form-head,.form-body{padding:22px 20px}
  .tabbar{padding:0 14px}
  .tabbar button{padding:14px 12px;font-size:13px}
  .big-cta{padding:30px 22px}
  .big-cta .bc-actions .btn{width:100%}
  .footer{padding-top:44px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;gap:8px}
  .float-cta{right:12px;bottom:12px;gap:7px}
  .float-cta .fc-tel{display:none}
  .float-cta .fc-main{padding:11px 15px;font-size:13px}
  .mobile-bar{
    display:grid;grid-template-columns:1fr 1fr;gap:0;position:fixed;left:0;right:0;bottom:0;z-index:72;
    background:#fff;border-top:1px solid var(--line);box-shadow:0 -4px 18px rgba(8,24,56,.08);
  }
  .mobile-bar a{display:flex;align-items:center;justify-content:center;gap:7px;min-height:52px;font-size:14.5px;font-weight:700}
  .mobile-bar a:first-child{color:var(--brand-dark);border-right:1px solid var(--line)}
  .mobile-bar a:last-child{background:var(--brand);color:#fff}
  .mobile-bar svg{width:16px;height:16px}
  body{padding-bottom:52px}
  .float-cta{bottom:66px}
  .float-cta .fc-top{display:none}
}
@media print{
  .header,.topbar,.float-cta,.mobile-bar,.big-cta,.footer{display:none}
  .reveal{opacity:1;transform:none}
}

/* 产品详情页列表块 */
.journey-list{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.journey-list li{display:flex;gap:14px;align-items:baseline;background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;padding:14px 18px}
.journey-list li b{flex:0 0 auto;font-size:14.5px;color:var(--ink)}
.journey-list li span{font-size:13.5px;color:var(--text-2)}
.compare th{white-space:nowrap}
.compare td{color:var(--text-1)}
@media (max-width:760px){
  .journey-list li{flex-direction:column;gap:4px}
}

/* 客户项目名录 */
.client-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.client-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px 22px}
.cc-head{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid var(--line);padding-bottom:10px;margin-bottom:12px}
.cc-head h3{font-size:16px;margin:0}
.cc-head span{font-size:12px;color:var(--text-2)}
.client-list{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.client-list li{font-size:12.5px;line-height:1.6}
.client-list li b{display:block;font-weight:600;color:var(--ink)}
.client-list li span{color:var(--text-2)}
@media(max-width:980px){.client-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.client-grid{grid-template-columns:1fr}}

/* 产品图容器：小尺寸原图不放大，避免发虚 */
.pcard-media{height:168px;display:grid;place-items:center;background:linear-gradient(180deg,#F7FAFF,#EDF3FF);border-radius:10px;margin-bottom:14px;overflow:hidden}
.pcard-media img{width:100%;height:100%;object-fit:contain;padding:8px}
.pdetail-media{border:1px solid var(--line);border-radius:var(--r-lg);background:linear-gradient(180deg,#F8FBFF,#EEF4FF);display:grid;place-items:center;min-height:320px;padding:18px}
.pdetail-media img{width:100%;height:auto;max-height:420px;object-fit:contain}

/* 首屏主力产品卡 */
.hero-product{background:#fff;border-radius:var(--r-lg);padding:20px;box-shadow:var(--shadow-lg);color:var(--text);width:100%;max-width:430px;justify-self:end}
.hp-media{position:relative;background:linear-gradient(180deg,#F7FAFF,#EDF3FF);border-radius:12px;display:grid;place-items:center;padding:12px;margin-bottom:16px}
.hp-media img{width:100%;max-height:240px;object-fit:contain}
.hp-tag{position:absolute;top:12px;left:12px;background:var(--brand);color:#fff;font-size:12px;font-weight:700;padding:4px 10px;border-radius:6px;letter-spacing:.04em}
.hp-body h3{font-size:19px;color:var(--ink)}
.hp-body p{font-size:13.5px;color:var(--text-2);margin:8px 0 12px;line-height:1.65}
.hp-chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.hp-chips span{font-size:12px;font-weight:600;color:var(--brand-dark);background:var(--brand-050);border:1px solid #CBDDFF;border-radius:6px;padding:4px 10px}
.hp-kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;border-top:1px solid var(--line);margin-top:16px;padding-top:14px;text-align:center}
.hp-kpis b{font-size:19px;color:var(--ink);font-weight:800;letter-spacing:-.02em}
.hp-kpis b i{font-style:normal;font-size:12px;font-weight:700;color:var(--text-2);margin-left:1px}
.hp-kpis span{display:block;font-size:11px;color:var(--text-2);margin-top:2px}
.hp-foot{font-size:11.5px;color:var(--text-3);margin-top:12px}
.hp-foot a{color:var(--brand);text-decoration:underline}
@media(max-width:1080px){.hero-product{max-width:none;justify-self:stretch}}

/* 产品卡（带图） */
.pcard{display:flex;flex-direction:column}
.pcard-cat{font-size:11px;font-weight:700;letter-spacing:.05em;color:var(--text-3);margin-bottom:4px}

/* 文字款产品小卡（与图卡分区，统一高度） */
.pcard-mini{display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;transition:all .2s var(--ease)}
.pcard-mini:hover{border-color:var(--brand);box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.pcard-mini b{font-size:14.5px;color:var(--ink);font-weight:700}
.pcard-mini span{font-size:12.5px;color:var(--text-2);line-height:1.6;flex:1}
.pcard-mini i{font-style:normal;font-size:12px;color:var(--brand);font-weight:700}

/* 详情页中部快捷询价条 */
.mid-cta{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;background:var(--brand-050);border:1px solid #CBDDFF;border-radius:var(--r);padding:18px 24px;font-size:14.5px;color:var(--ink)}
.mid-cta b{color:var(--brand-dark)}
.mid-cta>div{display:flex;gap:10px;flex-wrap:wrap}
@media(max-width:760px){.mid-cta>div{width:100%}.mid-cta>div .btn{flex:1}}