/* 胖柴官网设计系统 v2 · 2026-07-14 · 对标飞书官网的蓝白 SaaS 风 */
:root{
  --blue:#3370ff;          /* 主 CTA / 链接 */
  --blue-hover:#2b62e3;
  --blue-soft:#eaf1ff;
  --purple:#6550ff;        /* 品牌紫，仅作渐变副色/小面积点缀 */
  --navy:#05143b;          /* 标题/页脚（胖柴藏蓝） */
  --ink:#1f2329;
  --body:#51565d;
  --mute:#8f959e;
  --line:#e5e6eb;
  --bg:#ffffff;
  --bg-soft:#f5f8ff;
  --r-btn:8px; --r-card:16px;
  --shadow-card:0 12px 32px rgba(31,60,136,.08);
  --shadow-lift:0 16px 40px rgba(31,60,136,.14);
  --grad-hero:linear-gradient(180deg,#e9f1ff 0%,#f5f2ff 45%,#ffffff 100%);
  --grad-cta:linear-gradient(120deg,#3370ff 0%,#6550ff 100%);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",-apple-system,"Segoe UI",sans-serif;color:var(--body);background:var(--bg);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{color:var(--navy);font-weight:600;line-height:1.32}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
section{padding:96px 0}
.band-soft{background:var(--bg-soft)}

/* ── 按钮 ── */
.btn{display:inline-block;font-size:16px;font-weight:500;border-radius:var(--r-btn);padding:13px 30px;transition:all .18s ease;cursor:pointer;line-height:1.6}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-hover);transform:translateY(-2px);box-shadow:0 8px 20px rgba(51,112,255,.32)}
.btn-secondary{background:#fff;color:var(--navy);border:1px solid var(--line)}
.btn-secondary:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px)}
.btn-lg{font-size:17px;padding:16px 40px}

/* ── 导航 ── */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid rgba(229,230,235,.7)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:10px 24px;max-width:1160px;margin:0 auto}
.nav-logo img{height:52px;width:auto}
.nav-links{display:flex;gap:30px;align-items:center;font-size:15px;font-weight:500;color:var(--ink)}
.nav-links a:hover{color:var(--blue)}
.nav-links .btn{padding:9px 22px;font-size:14px}
.nav-toggle{display:none;background:none;border:none;font-size:24px;color:var(--navy);cursor:pointer}

/* ── Hero ── */
.hero{background:var(--grad-hero);padding:104px 0 72px;text-align:center}
.hero .eyebrow{margin-bottom:26px}
.hero h1{font-size:54px;letter-spacing:.5px;margin-bottom:22px}
.hero .lead{font-size:19px;color:var(--body);max-width:640px;margin:0 auto 38px}
.hero-ctas{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:14px}
.hero .note{font-size:13.5px;color:var(--mute)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:500;color:var(--blue);background:#fff;border:1px solid rgba(51,112,255,.25);border-radius:999px;padding:7px 20px;box-shadow:0 2px 8px rgba(51,112,255,.08)}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--grad-cta)}

/* ── 数字条（悬浮白卡） ── */
.stats-card{max-width:960px;margin:56px auto 0;background:#fff;border-radius:var(--r-card);box-shadow:var(--shadow-card);display:grid;grid-template-columns:repeat(4,1fr);padding:34px 20px;gap:12px}
.stat{text-align:center;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat .num{font-size:40px;font-weight:600;color:var(--navy);line-height:1.15}
.stat .num sup{font-size:20px;color:var(--blue)}
.stat .lbl{font-size:13.5px;color:var(--mute);margin-top:4px}

/* ── TLDR / GEO 摘要 ── */
.tldr{max-width:760px;margin:40px auto 0;background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 26px;font-size:14.5px;color:var(--body);text-align:left}
.tldr strong{color:var(--navy)}

/* ── 节头 ── */
.sec-head{text-align:center;max-width:760px;margin:0 auto 56px}
.sec-head .tag{display:inline-block;font-size:14px;font-weight:500;color:var(--blue);margin-bottom:14px;letter-spacing:1px}
.sec-head h2{font-size:38px;margin-bottom:16px}
.sec-head .lead{font-size:17px;color:var(--body)}
.sec-head.left{text-align:left;margin-left:0}

/* ── 通用卡片 ── */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:36px 32px;transition:all .2s ease}
.card:hover{box-shadow:var(--shadow-lift);transform:translateY(-4px);border-color:transparent}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}

/* ── 痛点区 ── */
.insight-quote{font-size:28px;font-weight:600;color:var(--navy);line-height:1.5}
.insight-quote em{font-style:normal;color:var(--blue)}
.insight-quote .src{display:block;margin-top:16px;font-size:13.5px;font-weight:400;color:var(--mute)}
.insight-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:center}
.pain-list{list-style:none;display:flex;flex-direction:column;gap:12px}
.pain-list li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 22px;font-size:15px;display:flex;gap:12px;align-items:flex-start}
.pain-list li::before{content:"";flex-shrink:0;width:8px;height:8px;border-radius:50%;background:var(--grad-cta);margin-top:10px}
.pain-list li.hl{background:var(--navy);color:#fff;border-color:var(--navy);font-weight:500}
.pain-list li.hl::before{background:#fff}

/* ── CTA 模式卡 ── */
.cta-card .chip{width:56px;height:56px;border-radius:14px;background:var(--grad-cta);color:#fff;font-size:26px;font-weight:600;display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.cta-card .en{font-size:12.5px;letter-spacing:2px;color:var(--mute);text-transform:uppercase;margin-bottom:8px}
.cta-card h3{font-size:21px;margin-bottom:14px}
.cta-card ul{list-style:none;display:flex;flex-direction:column;gap:9px;font-size:15px;color:var(--body)}
.cta-card ul li{padding-left:18px;position:relative}
.cta-card ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--blue)}
.flow-note{margin-top:36px;background:var(--blue-soft);border-radius:12px;padding:20px 28px;font-size:15.5px;color:var(--navy);font-weight:500;text-align:center}

/* ── 解决方案卡 ── */
.sol-card{display:flex;flex-direction:column}
.sol-card .head{border-radius:12px;padding:22px 24px;margin-bottom:22px;color:var(--navy)}
.sol-card .head .tag{font-size:12.5px;letter-spacing:2px;opacity:.75;display:block;margin-bottom:6px}
.sol-card .head h3{font-size:20px;line-height:1.45}
.sol-ec .head{background:linear-gradient(120deg,#eef2ff,#f3efff)}
.sol-food .head{background:linear-gradient(120deg,#e8fbf8,#eef7ff)}
.sol-more .head{background:linear-gradient(120deg,#fff8e6,#f5f8ff)}
.sol-card ul{list-style:none;display:flex;flex-direction:column;gap:10px;font-size:14.5px;color:var(--body);margin-bottom:26px}
.sol-card ul li{padding-left:20px;position:relative}
.sol-card ul li::before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:600}
.sol-card .btn{margin-top:auto;align-self:flex-start}

/* ── demo 卡 ── */
.demo-card h4{font-size:16.5px;margin:0 0 8px}
.demo-card p{font-size:13.5px;color:var(--body);line-height:1.65}
.demo-card .dot{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:15px;margin-bottom:14px;background:var(--blue-soft)}
.demo-note{margin-top:40px;display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap}
.demo-note .small{font-size:13.5px;color:var(--mute)}

/* ── 案例卡 ── */
.case-card{position:relative;padding-top:52px}
.case-card::before{content:"“";position:absolute;top:14px;left:28px;font-size:56px;line-height:1;color:var(--blue);opacity:.35;font-family:Georgia,serif}
.case-card p{font-size:16px;color:var(--ink);line-height:1.8}
.case-card .who{display:inline-block;margin-top:18px;font-size:12.5px;color:var(--blue);background:var(--blue-soft);border-radius:999px;padding:5px 14px}
.clients{margin-top:48px;text-align:center}
.clients-label{font-size:13px;letter-spacing:2px;color:var(--mute);display:block;margin-bottom:18px}
.client-chips{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.client-chips span{border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 22px;font-size:14.5px;font-weight:500;color:var(--navy)}

/* ── 活动墙 ── */
.events-photos{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.events-photos img{aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--shadow-card)}
.events-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-top:26px}
.event-card{margin:0}
.event-card img{width:100%;border-radius:12px;border:1px solid var(--line)}
.event-card figcaption{font-size:12.5px;color:var(--mute);margin-top:8px;line-height:1.5}

/* ── 关于 ── */
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:start}
.about-copy p{margin-bottom:18px;font-size:16px}
.values{display:flex;gap:12px;flex-wrap:wrap;margin-top:6px}
.values span{background:var(--blue-soft);border-radius:999px;padding:8px 20px;font-size:14px;font-weight:500;color:var(--navy)}
.city-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:30px;box-shadow:var(--shadow-card)}
.city-card h4{font-size:14px;letter-spacing:2px;color:var(--mute);font-weight:500;margin-bottom:16px}
.city-card .cities{display:flex;gap:10px;flex-wrap:wrap}
.city-card .cities a{background:var(--bg-soft);color:var(--navy);border-radius:999px;padding:7px 18px;font-size:14.5px;font-weight:500;transition:all .15s}
.city-card .cities a:hover{background:var(--blue);color:#fff}

/* ── FAQ ── */
.faq-list{max-width:820px;margin:0 auto}
.faq-list details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px 26px;margin-bottom:14px}
.faq-list details[open]{box-shadow:var(--shadow-card)}
.faq-list summary{font-size:17px;font-weight:600;color:var(--navy);cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";font-size:22px;color:var(--blue);font-weight:400;flex-shrink:0}
.faq-list details[open] summary::after{content:"−"}
.faq-list details p{margin-top:12px;font-size:15px;color:var(--body);max-width:700px}
.faq-more{text-align:center;margin-top:32px}

/* ── 留资渐变带 ── */
.lead-band{background:var(--grad-cta);text-align:center;color:#fff}
.lead-band h2{color:#fff;font-size:40px;margin-bottom:16px}
.lead-band .lead{color:rgba(255,255,255,.88);max-width:560px;margin:0 auto 36px;font-size:17px}
.lead-band .btn-primary{background:#fff;color:var(--blue)}
.lead-band .btn-primary:hover{background:#f0f4ff;box-shadow:0 8px 24px rgba(0,0,0,.18)}
.hooks{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:940px;margin:52px auto 0;text-align:left}
.hook{background:rgba(255,255,255,.14);border-radius:14px;padding:26px 24px;backdrop-filter:blur(4px)}
.hook .lvl{font-size:12px;letter-spacing:2px;color:rgba(255,255,255,.75);margin-bottom:10px}
.hook h4{color:#fff;font-size:17px;margin-bottom:8px}
.hook p{font-size:13.5px;color:rgba(255,255,255,.82)}

/* ── 客服二维码弹层 ── */
.qr-modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;z-index:100}
.qr-modal:target{display:flex}
.qr-backdrop{position:absolute;inset:0;background:rgba(5,20,59,.55)}
.qr-box{position:relative;background:#fff;border-radius:var(--r-card);padding:28px;max-width:320px;text-align:center;box-shadow:var(--shadow-lift)}
.qr-box img{width:100%;border-radius:10px}
.qr-box p{font-size:14px;color:var(--body);margin:14px 0 18px;line-height:1.6}

/* ── 内页 ── */
.page-hero{background:var(--grad-hero);padding:72px 0 48px;text-align:center}
.page-hero h1{font-size:42px;margin-bottom:16px}
.page-hero .lead{font-size:17px;color:var(--body);max-width:680px;margin:0 auto}
.breadcrumb{font-size:13px;color:var(--mute);margin-bottom:20px}
.breadcrumb a{color:var(--blue)}
.content-md{max-width:860px;margin:0 auto;text-align:left;overflow-wrap:anywhere}
.content-md > h2{font-size:28px;margin:42px 0 16px;padding-left:14px;border-left:3px solid var(--blue)}
.content-md > h3{font-size:20px;margin:28px 0 12px}
.content-md p{margin-bottom:16px}
.content-md ul{padding-left:22px;margin-bottom:16px}
.content-md li{margin-bottom:8px}
.content-md table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:24px 0;background:#fff}
.content-md th,.content-md td{min-width:150px;padding:12px 14px;border:1px solid var(--line);text-align:left;vertical-align:top}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;margin:24px 0}
table.cmp{border-collapse:collapse;width:100%;font-size:14.5px;background:#fff}
table.cmp th,table.cmp td{border-bottom:1px solid var(--line);padding:14px 16px;text-align:left;vertical-align:top}
table.cmp th{background:var(--bg-soft);color:var(--navy);font-weight:600;white-space:nowrap}
table.cmp tr:last-child td{border-bottom:0}
.src-note{font-size:12.5px;color:var(--mute);margin-top:10px}
.source-note{margin:22px 0 0;padding:13px 16px;border-left:3px solid rgba(51,112,255,.55);background:rgba(255,255,255,.72);color:#68717c;font-size:12.5px;line-height:1.65}
.source-note a{color:var(--blue);font-weight:500}

/* ── 页脚 ── */
footer{background:var(--navy);color:rgba(255,255,255,.72);padding:64px 0 40px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr .9fr;gap:44px;align-items:start}
.foot-grid img.logo{height:56px;width:auto;margin-bottom:18px}
.foot-col h5{color:#fff;font-size:14px;margin-bottom:14px;font-weight:600}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a:hover{color:#9db9ff}
.foot-qr{display:flex;gap:18px;align-items:flex-start}
.foot-qr .qr-item{text-align:center}
.foot-qr img{width:92px;border-radius:8px;margin-bottom:8px}
.foot-qr p{font-size:12px}
/* ── 客户 logo 墙（文字版） ── */
.logo-wall{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;max-width:900px;margin:0 auto}
.logo-wall span{border:1px solid var(--line);border-radius:10px;padding:16px 28px;font-size:16.5px;font-weight:600;color:var(--navy);background:#fff;letter-spacing:.5px}
/* ── 产品页小标签 ── */
.tag-soft{display:inline-block;font-size:11.5px;font-weight:500;color:var(--blue);background:var(--blue-soft);border-radius:999px;padding:2px 10px;margin-left:8px;vertical-align:middle}
.foot-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:44px;padding-top:22px;font-size:12.5px;color:rgba(255,255,255,.45);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.credential-card{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.72fr);gap:36px;align-items:start;margin:40px 0;padding:30px;border:1px solid var(--line);border-radius:16px;background:#f7f9fc}
.credential-card h2{margin-top:0}
.credential-copy dl{display:grid;gap:10px;margin:22px 0}
.credential-copy dl div{display:grid;grid-template-columns:110px 1fr;gap:12px;padding-top:10px;border-top:1px solid var(--line)}
.credential-copy dt{font-weight:700;color:var(--navy)}
.credential-copy dd{margin:0}
.credential-figure{margin:0;padding:10px;background:#fff;border:1px solid var(--line);border-radius:10px}
.credential-figure img{display:block;width:100%;height:auto}
.credential-figure figcaption{padding:10px 4px 2px;color:var(--mute);font-size:12.5px;line-height:1.6}
.hash-value{overflow-wrap:anywhere;word-break:break-all}
.evidence-boundaries{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin:36px 0}
.evidence-boundaries section{padding:24px;border:1px solid var(--line);border-radius:14px;background:#fff}
.evidence-boundaries h2{margin-top:0;font-size:22px}

/* ── 响应式 ── */
@media (max-width:960px){
  .credential-card{grid-template-columns:1fr}
  .evidence-boundaries{grid-template-columns:1fr}
  .hero h1{font-size:38px}
  .sec-head h2{font-size:30px}
  .page-hero h1{font-size:32px}
  .insight-grid,.about-grid{grid-template-columns:1fr}
  .grid-3,.hooks{grid-template-columns:1fr}
  .grid-4{grid-template-columns:1fr 1fr}
  .events-grid{grid-template-columns:repeat(3,1fr)}
  .events-photos{grid-template-columns:1fr}
  .stats-card{grid-template-columns:1fr 1fr;gap:20px}
  .stat:nth-child(2){border-right:0}
  .foot-grid{grid-template-columns:1fr 1fr}
  section{padding:64px 0}
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;padding:20px 24px;border-bottom:1px solid var(--line);gap:18px;align-items:flex-start}
  .nav-links.open{display:flex}
  .nav-toggle{display:block}
}
@media (max-width:560px){
  .credential-card{padding:20px 16px;gap:22px}
  .credential-copy dl div{grid-template-columns:1fr;gap:3px}
  .wrap{padding-left:18px;padding-right:18px}
  .page-hero{padding:56px 0 40px}
  .page-hero h1{font-size:28px}
  .page-hero .lead{font-size:16px}
  .content-md > h2{font-size:24px;margin-top:34px;padding-left:12px}
  .hero h1{font-size:30px}
  .grid-4,.events-grid{grid-template-columns:1fr 1fr}
  .insight-quote{font-size:22px}
  .lead-band h2{font-size:28px}
  .stat .num{font-size:30px}
  .foot-grid{grid-template-columns:1fr}
}

/* 首页证据型视觉：现场材料、诊断交互与四步落地 */
.home{--paper:#f6f2eb;--paper-line:#d9d1c5;--signal:#d96f32;background:var(--paper);color:#394453;overflow-x:hidden}
.home header{background:rgba(246,242,235,.94);border-bottom-color:var(--paper-line)}
.home .home-hero{background:var(--paper);padding:58px 0 72px;text-align:left}
.home-hero-grid{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(360px,.94fr);gap:56px;align-items:end}
.home-hero-copy,.home-hero-evidence{min-width:0}
.home .home-hero .eyebrow{margin-bottom:22px;background:transparent;border:0;border-radius:0;box-shadow:none;padding:0;color:#8a4c2b;letter-spacing:.08em}
.home .home-hero .eyebrow::before{width:32px;height:2px;border-radius:0;background:var(--signal)}
.home .home-hero h1{font-family:"Songti SC","STSong","Noto Serif CJK SC",serif;font-size:clamp(44px,5.3vw,70px);font-weight:600;line-height:1.13;letter-spacing:-.045em;margin:0 0 24px;overflow-wrap:anywhere}
.home .home-hero .lead{font-size:18px;max-width:680px;margin:0 0 30px;color:#4d5865}
.home .home-hero .hero-ctas{justify-content:flex-start;margin-bottom:15px}
.home .home-hero .note{max-width:650px}
.home .home-hero .tldr{margin:28px 0 0;border:0;border-left:3px solid var(--signal);border-radius:0;padding:8px 0 8px 18px;background:transparent;max-width:680px}
.home-hero-evidence{margin:0;background:#fff;border:1px solid var(--paper-line);padding:12px;box-shadow:10px 12px 0 rgba(5,20,59,.08);transform:rotate(.6deg)}
.home-hero-evidence img{width:100%;aspect-ratio:16/10;object-fit:cover}
.home-hero-evidence figcaption{display:grid;gap:4px;padding:14px 6px 4px;font-size:12.5px;line-height:1.55;color:#68717c}
.home-hero-evidence figcaption strong{color:var(--navy);font-size:14px}
.home-diagnostic{padding:76px 0;background:#fff;border-top:1px solid var(--paper-line);border-bottom:1px solid var(--paper-line)}
.diagnostic-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:64px;align-items:start}
.diagnostic-intro .tag{color:#8a4c2b;letter-spacing:.08em}
.diagnostic-intro h2{font-family:"Songti SC","STSong",serif;font-size:38px;margin:12px 0 18px}
.diagnostic-intro p{color:#66707a}
.diagnostic-panel{background:#10233f;color:#fff;padding:32px;border-radius:12px;box-shadow:0 22px 60px rgba(16,35,63,.18)}
.diagnostic-group{border:0;margin:0 0 22px;padding:0}
.diagnostic-group legend{font-size:14px;color:#c7d2df;margin-bottom:10px}
.diagnostic-choices{display:flex;gap:9px;flex-wrap:wrap}
.diagnostic-choices button{appearance:none;border:1px solid #536781;background:#1a3150;color:#fff;border-radius:7px;padding:10px 16px;font:inherit;cursor:pointer}
.diagnostic-choices button:hover,.diagnostic-choices button[aria-pressed="true"]{background:#f2ede5;color:#10233f;border-color:#f2ede5}
.diagnostic-choices button:focus-visible,.wechat-float-close:focus-visible{outline:3px solid #f2a36f;outline-offset:3px}
.diagnostic-result{border-left:3px solid var(--signal);background:#091a31;padding:18px 20px;margin-top:26px}
.diagnostic-result span{display:block;font-size:12px;color:#abb9c9;margin-bottom:5px}
.diagnostic-result strong{display:block;font-size:19px;margin-bottom:5px}
.diagnostic-result p{font-size:14px;color:#cbd5df}
.diagnostic-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.diagnostic-panel .btn-secondary{border-color:#60738b;background:transparent;color:#fff}
.delivery-steps{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--paper-line);border-bottom:1px solid var(--paper-line);margin-bottom:76px}
.delivery-steps article{padding:27px 24px;border-right:1px solid var(--paper-line)}
.delivery-steps article:last-child{border-right:0}
.delivery-steps span{font-size:13px;color:#a2542c;font-weight:700}
.delivery-steps h3{font-size:19px;margin:8px 0}
.delivery-steps p{font-size:14px;color:#68717c;line-height:1.65}
.wechat-float{position:fixed;z-index:38;right:12px;top:50%;width:140px;transform:translateY(-50%);background:#fff;border:1px solid var(--paper-line);box-shadow:0 16px 42px rgba(5,20,59,.2);padding:10px}
.wechat-float-close{position:absolute;right:5px;top:3px;border:0;background:transparent;color:#69737f;font-size:20px;line-height:1;cursor:pointer}
.wechat-float-card{display:grid;gap:7px;text-align:center;color:var(--navy);font-size:14px;font-weight:600}
.wechat-qr-crop{display:block;height:118px;overflow:hidden;margin-top:8px}
.wechat-qr-crop img{width:100%;height:auto}
.wechat-float small{font-size:11.5px;font-weight:400;color:#69737f}
.wechat-float.is-collapsed{display:none}
.wechat-mobile-entry{display:none}
@media (min-width:961px) and (max-width:1415px){
  .wechat-float{display:none}
  .wechat-mobile-entry{display:block;position:fixed;z-index:39;right:14px;bottom:14px;background:#10233f;color:#fff;border:1px solid rgba(255,255,255,.4);border-radius:8px;padding:11px 15px;font-size:14px;font-weight:600;box-shadow:0 10px 28px rgba(5,20,59,.25)}
}
@media (max-width:960px){
  .home-hero-grid,.diagnostic-layout{grid-template-columns:1fr}
  .home .home-hero{padding-top:44px}
  .home-hero-evidence{max-width:680px;transform:none}
  .delivery-steps{grid-template-columns:1fr 1fr}
  .delivery-steps article:nth-child(2){border-right:0}
  .delivery-steps article:nth-child(-n+2){border-bottom:1px solid var(--paper-line)}
  .wechat-float{display:none}
  .wechat-mobile-entry{display:block;position:fixed;z-index:39;right:14px;bottom:14px;background:#10233f;color:#fff;border:1px solid rgba(255,255,255,.4);border-radius:8px;padding:11px 15px;font-size:14px;font-weight:600;box-shadow:0 10px 28px rgba(5,20,59,.25)}
}
@media (max-width:560px){
  .home .home-hero h1{font-size:36px}
  .home .home-hero .lead{font-size:16px}
  .home .home-hero .btn{width:100%;text-align:center}
  .home-hero-grid{gap:34px}
  .home-hero-evidence{padding:8px}
  .diagnostic-layout{gap:28px}
  .diagnostic-intro h2{font-size:29px}
  .diagnostic-panel{padding:22px 18px}
  .diagnostic-choices button{flex:1 1 auto;padding:10px 8px}
  .diagnostic-actions .btn{width:100%;text-align:center}
  .delivery-steps{grid-template-columns:1fr}
  .delivery-steps article{border-right:0;border-bottom:1px solid var(--paper-line)}
  .delivery-steps article:last-child{border-bottom:0}
}