/* roulang page: index */
:root{
  --c-primary:#146A6E;
  --c-primary-dark:#0E5457;
  --c-primary-deep:#0A3F42;
  --c-accent:#C45C26;
  --c-accent-dark:#A34C1F;
  --c-ink:#1C1F24;
  --c-slate:#3A4048;
  --c-muted:#5C6370;
  --c-line:rgba(58,64,72,.12);
  --c-line-strong:rgba(58,64,72,.22);
  --c-concrete:#E6E8EB;
  --c-fog:#F5F6F4;
  --c-white:#FFFFFF;
  --c-signal:#2F9E44;
  --c-dark:#14171C;
  --c-panel:#1A1E24;
  --radius:8px;
  --radius-sm:6px;
  --shadow:0 10px 28px rgba(28,31,36,.08);
  --shadow-soft:0 6px 18px rgba(28,31,36,.06);
  --nav-top:40px;
  --nav-main:74px;
  --container:1240px;
  --section-y:88px;
  --font:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-num:"IBM Plex Sans","DIN Alternate","Segoe UI","Helvetica Neue",ui-sans-serif,sans-serif;
  --header-h:114px;
  --sticky-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0}
body{
  font-family:var(--font);
  font-size:16px;
  line-height:1.78;
  color:var(--c-ink);
  background:var(--c-fog);
  overflow-x:hidden;
  padding-bottom:var(--sticky-h);
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease,transform .2s ease,opacity .2s ease}
a:hover{color:var(--c-primary-dark)}
button,input,select,textarea{font-family:inherit}
button{cursor:pointer}
ul,ol{margin:0;padding:0}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:.01em;line-height:1.28;color:var(--c-ink)}
h1{font-size:42px}
h2{font-size:26px}
h3{font-size:19px}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{width:min(100% - 40px,var(--container));margin:0 auto}
.skip{position:absolute;left:-999px;top:8px}
.skip:focus{left:8px;z-index:400;background:#fff;padding:8px 12px}
.site-header{position:sticky;top:0;z-index:100;background:#fff}
.nav-top{
  height:var(--nav-top);
  background:#2B3038;
  color:#D7DBE0;
  font-size:13px;
  line-height:var(--nav-top);
}
.nav-top-inner{display:flex;justify-content:space-between;align-items:center;gap:16px}
.nav-top a{color:#F5F6F4}
.nav-top a:hover{color:#fff}
.nav-top .sep{opacity:.45;margin:0 10px}
.nav-main{
  height:var(--nav-main);
  background:#fff;
  border-bottom:1px solid var(--c-line);
}
.nav-main-inner{height:100%;display:flex;align-items:center;gap:22px}
.logo{display:flex;align-items:center;gap:10px;color:var(--c-ink);flex:0 0 auto}
.logo:hover{color:var(--c-ink)}
.logo-mark{
  width:42px;height:42px;border-radius:6px;
  background:linear-gradient(180deg,var(--c-primary) 0%,var(--c-primary-deep) 100%);
  display:grid;place-items:center;position:relative;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.12);
}
.logo-mark svg{display:block}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:16px;font-weight:700}
.logo-text em{font-style:normal;font-size:12px;color:var(--c-primary);font-weight:600;letter-spacing:.12em}
.site-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.site-nav a{
  color:var(--c-slate);
  font-size:14px;
  padding:8px 10px;
  border-radius:6px;
  position:relative;
}
.site-nav a:hover{color:var(--c-primary);background:rgba(20,106,110,.06)}
.site-nav a.is-active{color:var(--c-primary);font-weight:650}
.site-nav a.is-active::after{
  content:"";position:absolute;left:10px;right:10px;bottom:4px;height:2px;background:var(--c-primary);border-radius:1px;
}
.nav-cta{margin-left:8px;flex:0 0 auto}
.icon-phone,.menu-toggle{display:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 20px;border-radius:6px;border:1px solid transparent;
  font-size:15px;font-weight:650;line-height:1;transition:all .2s ease;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);background:var(--c-primary-deep)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff}
.btn-line{background:#fff;color:var(--c-primary);border-color:rgba(20,106,110,.35)}
.btn-line:hover{border-color:var(--c-primary);background:rgba(20,106,110,.06);color:var(--c-primary-dark)}
.btn-lg{min-height:48px;padding:0 24px}
.hero{
  position:relative;
  background:#121518;
  color:#fff;
  overflow:hidden;
}
.hero .container{position:relative}
.slides{position:relative;min-height:640px}
.slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .6s ease,visibility .6s ease}
.slide.is-active{opacity:1;visibility:visible;z-index:1}
.slide img{width:100%;height:100%;object-fit:cover;filter:saturate(.85) contrast(1.05)}
.slide-mask{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(16,18,22,.82) 0%,rgba(16,18,22,.55) 48%,rgba(16,18,22,.28) 100%);
}
.slide-copy{
  position:relative;z-index:2;
  max-width:760px;
  padding:72px 0 180px;
}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.18em;color:#D7E4E4;margin-bottom:16px;
  padding:6px 10px;border:1px solid rgba(255,255,255,.18);border-radius:4px;background:rgba(20,106,110,.25);
}
.kicker i{width:8px;height:8px;border-radius:1px;background:var(--c-signal);display:inline-block}
.hero h1,.hero-heading{font-size:42px;color:#fff;margin-bottom:16px;font-weight:700;max-width:16em}
.hero-lead{font-size:16px;line-height:1.8;color:#E6E8EB;margin-bottom:28px;max-width:42em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.carousel-nav{position:absolute;right:20px;top:50%;transform:translateY(-50%);z-index:3;display:flex;flex-direction:column;gap:8px}
.carousel-btn{
  width:36px;height:36px;border:1px solid rgba(255,255,255,.35);background:rgba(20,22,26,.45);
  color:#fff;border-radius:4px;display:grid;place-items:center;
}
.carousel-btn:hover{background:rgba(20,106,110,.85);border-color:transparent}
.dots{position:absolute;left:0;right:0;bottom:118px;z-index:3;display:flex;gap:8px;padding-left:max(20px, calc((100% - var(--container)) / 2))}
.dots button{width:28px;height:3px;border:0;padding:0;background:rgba(255,255,255,.35);border-radius:1px}
.dots button.is-on{background:var(--c-accent);width:40px}
.roadmap{
  position:absolute;left:0;right:0;bottom:48px;z-index:3;
}
.roadmap-inner{
  display:grid;grid-template-columns:1fr auto;gap:18px;align-items:center;
  background:rgba(20,22,26,.72);border:1px solid rgba(255,255,255,.12);
  border-radius:6px;padding:12px 14px 12px 16px;backdrop-filter:blur(6px);
}
.nodes{display:flex;align-items:center;gap:0;overflow:auto}
.node{display:flex;align-items:center;gap:10px;min-width:max-content;color:#EEF1F3;font-size:13px}
.node + .node::before{content:"";width:28px;height:1px;background:rgba(255,255,255,.25);margin:0 8px}
.node b{font-family:var(--font-num);font-size:12px;color:#9ED0D2;font-weight:650}
.node .st{display:inline-block;padding:2px 6px;border:1px solid rgba(255,255,255,.18);border-radius:3px;font-size:11px;color:#D7DBE0}
.node .st.on{border-color:rgba(47,158,68,.6);color:#8FE0A0}
.node .st.wait{border-color:rgba(196,92,38,.7);color:#F0C2A4}
.param-bar{
  background:#102224;color:#D5DEDE;border-top:1px solid rgba(255,255,255,.06);
  font-size:13px;
}
.param-bar .container{display:flex;flex-wrap:wrap;gap:8px 28px;padding:12px 0}
.param-bar span{display:inline-flex;align-items:center;gap:8px}
.param-bar span::before{content:"";width:6px;height:6px;background:var(--c-primary);border-radius:1px}
section[id]{scroll-margin-top:calc(var(--header-h) + 8px)}
.section{padding:var(--section-y) 0;position:relative}
.section-fog{background:var(--c-fog)}
.section-white{background:#fff}
.section-grey{background:#EEF0F1}
.section-head{max-width:760px;margin-bottom:36px}
.section-head.wide{max-width:860px}
.eyebrow{font-size:12px;letter-spacing:.16em;color:var(--c-primary);font-weight:700;margin-bottom:10px}
.section-head p{color:var(--c-muted);margin-top:12px}
.rule{height:1px;background:linear-gradient(90deg,rgba(58,64,72,.18),transparent);margin:0 0 28px}
.rail{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:0;counter-reset:step}
.rail li{
  padding:8px 28px 8px 0;position:relative;
}
.rail li + li{padding-left:28px}
.rail li + li::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:1px;background:rgba(20,106,110,.25);
}
.rail .num{
  font-family:var(--font-num);font-size:13px;color:var(--c-primary);letter-spacing:.16em;display:block;margin-bottom:10px;font-weight:700;
}
.rail h3{margin-bottom:8px}
.rail p{color:var(--c-muted);font-size:15px}
.kpi{
  margin-top:14px;display:inline-block;font-family:var(--font-num);
  font-size:20px;font-weight:700;color:var(--c-ink);border-top:2px solid var(--c-primary);padding-top:8px;
}
.kpi small{display:block;font-size:12px;color:var(--c-muted);font-weight:500;font-family:var(--font);margin-top:2px}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.media{border-radius:8px;overflow:hidden;border:1px solid var(--c-line);background:#ddd;position:relative}
.media img{width:100%;height:100%;object-fit:cover;min-height:420px;aspect-ratio:4/3}
.plate{
  position:absolute;left:16px;bottom:16px;background:rgba(20,22,26,.82);color:#fff;
  padding:10px 12px;border-radius:6px;font-size:12px;line-height:1.5;max-width:70%;
}
.plate b{display:block;font-size:13px}
.check-list{list-style:none;margin-top:18px}
.check-list li{
  position:relative;padding:10px 0 10px 22px;border-bottom:1px solid var(--c-line);color:var(--c-slate);font-size:15px;
}
.check-list li::before{content:"";position:absolute;left:0;top:18px;width:8px;height:8px;border:2px solid var(--c-primary);border-radius:1px}
.spec-row{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 8px}
.tag{
  display:inline-flex;align-items:center;min-height:28px;padding:0 8px;
  border:1px solid var(--c-line-strong);border-radius:4px;font-size:12px;color:var(--c-slate);background:#fff;
}
.tag-solid{background:rgba(20,106,110,.08);border-color:rgba(20,106,110,.2);color:var(--c-primary)}
.scene-switch{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.scene-switch button{
  min-height:44px;padding:0 14px;border-radius:6px;border:1px solid var(--c-line-strong);
  background:#fff;color:var(--c-slate);font-size:14px;font-weight:600;
}
.scene-switch button.is-on,.scene-switch button:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.scene-panel{display:none;grid-template-columns:1.1fr .9fr;gap:28px;align-items:stretch}
.scene-panel.is-on{display:grid}
.scene-visual{border-radius:8px;overflow:hidden;border:1px solid var(--c-line);min-height:320px;position:relative}
.scene-visual img{width:100%;height:100%;object-fit:cover;min-height:320px}
.scene-body{background:#fff;border:1px solid var(--c-line);border-radius:8px;padding:28px}
.scene-body h3{margin-bottom:10px}
.scene-body p{color:var(--c-muted);margin-bottom:16px}
.caps{list-style:none}
.caps li{padding:10px 0;border-top:1px solid var(--c-line);color:var(--c-slate)}
.caps li strong{display:block;color:var(--c-ink);font-size:15px}
.grid-6{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.adv{
  background:#fff;border:1px solid var(--c-line);border-radius:8px;padding:22px;
  min-height:100%;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.adv:hover{transform:translateY(-2px);box-shadow:var(--shadow-soft);border-color:rgba(20,106,110,.25)}
.adv h3{margin:0 0 10px}
.adv p{color:var(--c-muted);font-size:14px}
.adv-metric{font-family:var(--font-num);font-size:32px;font-weight:700;color:var(--c-primary);line-height:1;margin:8px 0 12px}
.adv-metric span{font-size:14px;color:var(--c-muted);font-weight:500;margin-left:4px}
.mini-table{width:100%;border-collapse:collapse;font-size:13px;margin-top:10px}
.mini-table td{padding:6px 0;border-bottom:1px dashed var(--c-line);color:var(--c-slate)}
.mini-table td:last-child{text-align:right;font-family:var(--font-num);color:var(--c-ink);font-weight:650}
.flow{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.flow span{background:var(--c-fog);border-radius:4px;padding:4px 8px;font-size:12px;color:var(--c-slate)}
.product-stage{display:grid;grid-template-columns:1.35fr .85fr;gap:16px}
.product-main,.product-side article{
  background:#fff;border:1px solid var(--c-line);border-radius:8px;overflow:hidden;
  display:grid;transition:transform .2s ease,box-shadow .2s ease;
}
.product-main{grid-template-columns:1.1fr .9fr;min-height:360px}
.product-main:hover,.product-side article:hover{transform:translateY(-2px);box-shadow:var(--shadow-soft)}
.product-main .pic img,.product-side .pic img{width:100%;height:100%;object-fit:cover}
.product-main .pic{min-height:360px}
.product-side{display:grid;gap:16px}
.product-side article{grid-template-columns:140px 1fr}
.product-side .pic{min-height:160px}
.pbody{padding:22px}
.pbody h3{margin-bottom:8px}
.pbody p{color:var(--c-muted);font-size:14px;margin-bottom:12px}
.params{list-style:none;margin:0 0 16px}
.params li{display:flex;justify-content:space-between;gap:12px;padding:7px 0;border-bottom:1px solid var(--c-line);font-size:13px;color:var(--c-slate)}
.params li b{color:var(--c-ink);font-weight:650;font-family:var(--font-num)}
.dark-band{
  background:var(--c-dark) url("/assets/images/ed6e61c569af85b6.webp") center/cover no-repeat;
  color:#EEF1F3;position:relative;
}
.dark-band::before{content:"";position:absolute;inset:0;background:rgba(16,18,22,.88)}
.dark-band .container{position:relative;z-index:1;display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start}
.quote-line{font-size:28px;line-height:1.4;font-weight:650;margin:12px 0 18px;color:#fff}
.dark-band p{color:#C5CBD1}
.slices{display:grid;gap:14px}
.slice{border:1px solid rgba(255,255,255,.1);border-radius:8px;padding:18px 18px 14px;background:rgba(255,255,255,.03)}
.slice h3{color:#fff;font-size:18px;margin-bottom:8px}
.slice dl{display:grid;grid-template-columns:64px 1fr;gap:6px 10px;margin:0;font-size:14px}
.slice dt{color:#8FE0D8}
.slice dd{margin:0;color:#D5DBE0}
.stories{display:grid;grid-template-columns:1.2fr .9fr .9fr;gap:16px}
.story{background:#fff;border:1px solid var(--c-line);border-radius:8px;overflow:hidden;display:flex;flex-direction:column}
.story img{height:170px;width:100%;object-fit:cover}
.story .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.story p{color:var(--c-slate);font-size:15px}
.meta-plate{
  display:flex;justify-content:space-between;gap:8px;align-items:center;
  border-top:1px solid var(--c-line);padding-top:12px;font-size:12px;color:var(--c-muted);
}
.nameplate{border:1px solid var(--c-line-strong);padding:4px 8px;border-radius:4px;color:var(--c-ink)}
.stats{
  display:grid;grid-template-columns:repeat(5,1fr);gap:0;
  background:#E3E6E8;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
}
.stat{padding:36px 18px;text-align:left;border-right:1px solid rgba(58,64,72,.12)}
.stat:last-child{border-right:0}
.stat b{
  display:block;font-family:var(--font-num);font-size:36px;line-height:1;color:var(--c-ink);font-weight:700;
}
.stat span{display:block;margin-top:8px;font-size:13px;color:var(--c-muted)}
.compare-wrap{overflow:hidden;border:1px solid var(--c-line);border-radius:8px;background:#fff}
.compare{width:100%;border-collapse:collapse}
.compare th,.compare td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--c-line);font-size:14px;vertical-align:top}
.compare thead th{background:#1C1F24;color:#fff;font-weight:650}
.compare tbody th{width:22%;color:var(--c-ink);background:var(--c-fog);font-weight:650}
.compare td.before{color:var(--c-muted)}
.compare td.after{color:var(--c-ink);background:rgba(20,106,110,.05)}
.reviews{display:grid;grid-template-columns:repeat(12,1fr);gap:16px}
.review{background:#fff;border:1px solid var(--c-line);border-radius:8px;padding:22px;grid-column:span 4}
.review:nth-child(1){grid-column:1 / span 7}
.review:nth-child(2){grid-column:8 / span 5;margin-top:28px}
.review:nth-child(3){grid-column:1 / span 5}
.review:nth-child(4){grid-column:6 / span 7}
.stars{color:var(--c-accent);letter-spacing:2px;font-size:12px;margin-bottom:10px}
.review p{color:var(--c-slate)}
.who{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:16px;font-size:13px;color:var(--c-muted)}
.badge{
  display:inline-flex;align-items:center;min-height:24px;padding:0 8px;border:1px solid rgba(20,106,110,.3);
  color:var(--c-primary);border-radius:4px;font-size:12px;background:rgba(20,106,110,.06);
}
.topics{display:grid;grid-template-columns:1.3fr .7fr;gap:16px}
.topic-lg,.topic{
  position:relative;border-radius:8px;overflow:hidden;min-height:280px;color:#fff;display:flex;align-items:flex-end;
  border:1px solid var(--c-line);
}
.topic{min-height:132px}
.topic-stack{display:grid;gap:16px}
.topic-lg img,.topic img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.topic-lg .shade,.topic .shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,18,22,.1),rgba(16,18,22,.82))}
.topic-copy{position:relative;z-index:1;padding:22px}
.topic-copy h3{color:#fff;margin-bottom:8px}
.topic-copy p{color:#E6E8EB;font-size:14px}
.news-list{display:grid;gap:14px}
.news{
  display:grid;grid-template-columns:220px 1fr;gap:18px;background:#fff;border:1px solid var(--c-line);
  border-radius:8px;overflow:hidden;transition:transform .2s ease,box-shadow .2s ease;
}
.news:hover{transform:translateY(-2px);box-shadow:var(--shadow-soft)}
.news img{width:100%;height:100%;object-fit:cover;min-height:140px}
.news-body{padding:16px 18px 16px 0}
.news time{font-size:12px;color:var(--c-muted);font-family:var(--font-num)}
.news h3{margin:6px 0 8px;font-size:18px}
.news p{color:var(--c-muted);font-size:14px}
.more-link{margin-top:18px;display:inline-flex;min-height:44px;align-items:center;color:var(--c-primary);font-weight:650}
.faq{border-top:1px solid var(--c-line-strong)}
.faq-item{border-bottom:1px solid var(--c-line-strong);background:#fff}
.faq-item button{
  width:100%;text-align:left;background:transparent;border:0;min-height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 4px;font-size:16px;font-weight:650;color:var(--c-ink);
}
.faq-item .ico{width:22px;height:22px;border:1px solid var(--c-line-strong);border-radius:4px;position:relative;flex:0 0 auto}
.faq-item .ico::before,.faq-item .ico::after{content:"";position:absolute;background:var(--c-primary);left:50%;top:50%;transform:translate(-50%,-50%)}
.faq-item .ico::before{width:10px;height:2px}
.faq-item .ico::after{width:2px;height:10px}
.faq-item.is-open .ico::after{display:none}
.faq-ans{display:none;padding:0 8px 18px 0;color:var(--c-slate)}
.faq-item.is-open .faq-ans{display:block}
.faq-ans ul{margin:10px 0 0 18px}
.faq-ans li{margin:4px 0}
.guarantee{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.g-item{
  border:1px solid var(--c-line-strong);border-radius:6px;padding:16px 14px;background:#fff;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.4);
}
.g-item b{display:block;font-size:15px;margin-bottom:6px}
.g-item span{display:block;font-size:13px;color:var(--c-muted)}
.cta-band{background:linear-gradient(180deg,#123F42 0%,#0E2F32 100%);color:#fff}
.cta-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:start}
.cta-band h2,.cta-band p{color:#fff}
.cta-band p{color:#D5DEDE}
.form{
  background:#fff;color:var(--c-ink);border-radius:8px;padding:24px;border:1px solid rgba(255,255,255,.08);
}
.form label{display:block;font-size:13px;margin:0 0 6px;color:var(--c-slate)}
.field{margin-bottom:14px}
.form input,.form select{
  width:100%;height:48px;border-radius:6px;border:1px solid var(--c-line-strong);
  padding:0 12px;background:#fff;color:var(--c-ink);font-size:15px;
}
.form input:focus,.form select:focus{border-color:var(--c-primary);outline:none;box-shadow:0 0 0 3px rgba(20,106,110,.12)}
.form input.is-err,.form select.is-err{border-color:var(--c-accent)}
.form .hint{font-size:12px;color:var(--c-muted);margin-top:8px}
.form-ok{background:rgba(47,158,68,.1);border:1px solid rgba(47,158,68,.3);color:#215C2C;padding:12px 14px;border-radius:6px;margin-bottom:12px}
.form-err{background:rgba(196,92,38,.08);border:1px solid rgba(196,92,38,.35);color:#8A3F16;padding:12px 14px;border-radius:6px;margin-bottom:12px}
.nexts{list-style:none;margin-top:22px}
.nexts li{padding:14px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.nexts b{display:block;color:#fff;margin-bottom:4px}
.nexts span{color:#C9D3D3;font-size:14px}
.site-footer{background:#1C1F24;color:#C5CBD1;padding:56px 0 0}
.foot-grid{display:grid;grid-template-columns:1.3fr .9fr 1fr;gap:32px;padding-bottom:36px}
.foot-brand strong{display:block;color:#fff;font-size:18px;margin-bottom:4px}
.foot-brand em{font-style:normal;color:#9ED0D2;font-size:13px;letter-spacing:.12em}
.foot-brand p{margin-top:14px;font-size:14px}
.site-footer h3{color:#fff;font-size:15px;margin-bottom:12px}
.foot-links a,.foot-map a{display:block;color:#C5CBD1;padding:6px 0;font-size:14px}
.foot-links a:hover,.foot-map a:hover{color:#fff}
.legal{border-top:1px solid rgba(255,255,255,.08);padding:16px 0 22px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12px;color:#9AA1A8}
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:150;
  background:#fff;border-top:1px solid var(--c-line-strong);
  box-shadow:0 -8px 24px rgba(28,31,36,.08);
}
.sticky-inner{display:flex;align-items:center;gap:16px;min-height:var(--sticky-h)}
.sticky-inner .tel{font-weight:700;color:var(--c-ink)}
.sticky-inner .tel small{display:block;font-weight:500;color:var(--c-muted);font-size:12px}
.sticky-actions{margin-left:auto;display:flex;gap:8px;align-items:center}
.sticky-close{
  width:36px;height:36px;border:1px solid var(--c-line-strong);background:#fff;border-radius:6px;color:var(--c-slate);
}
body.hide-sticky{padding-bottom:0}
body.hide-sticky .sticky-bar{display:none}
.drawer{
  position:fixed;inset:0;background:rgba(16,18,22,.46);z-index:200;opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(86vw,380px);height:100%;background:#fff;
  padding:18px 18px 32px;overflow:auto;transform:translateX(24px);transition:transform .2s ease;
}
.drawer.is-open .drawer-panel{transform:none}
.drawer-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;padding-bottom:12px;border-bottom:1px solid var(--c-line)}
.drawer-nav a{display:block;padding:12px 4px;border-bottom:1px solid var(--c-line);color:var(--c-ink);min-height:44px}
.drawer-meta{font-size:13px;color:var(--c-muted);padding:14px 0;line-height:1.7}
@media (max-width:1440px){
  h1,.hero h1,.hero-heading{font-size:38px}
}
@media (max-width:1024px){
  :root{--section-y:72px;--nav-main:70px}
  h1,.hero h1,.hero-heading{font-size:34px}
  .site-nav a{padding:8px 7px;font-size:13px}
  .split,.scene-panel,.dark-band .container,.cta-grid,.product-stage{grid-template-columns:1fr;gap:24px}
  .product-main{grid-template-columns:1fr}
  .product-main .pic,.media img{min-height:280px}
  .grid-6{grid-template-columns:repeat(2,1fr)}
  .stories{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:repeat(3,1fr)}
  .stat:nth-child(3){border-right:0}
  .guarantee{grid-template-columns:repeat(3,1fr)}
  .topics{grid-template-columns:1fr}
  .slides{min-height:560px}
}
@media (max-width:768px){
  :root{--header-h:64px;--nav-top:0px;--section-y:56px}
  .nav-top{display:none}
  .site-nav,.nav-cta{display:none}
  .icon-phone,.menu-toggle{
    display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--c-line-strong);
    border-radius:6px;background:#fff;color:var(--c-ink);margin-left:8px;
  }
  .menu-toggle{margin-left:auto}
  .logo-text strong{font-size:15px}
  h1,.hero h1,.hero-heading{font-size:30px}
  h2{font-size:24px}
  .slides{min-height:520px}
  .slide-copy{padding:48px 0 210px}
  .carousel-nav{right:10px}
  .roadmap-inner{grid-template-columns:1fr;gap:10px}
  .rail{grid-template-columns:1fr}
  .rail li,.rail li + li{padding:16px 0}
  .rail li + li::before{left:0;right:0;top:0;bottom:auto;width:auto;height:1px}
  .grid-6,.stories,.foot-grid,.guarantee{grid-template-columns:1fr}
  .product-side article{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .stat{border-right:0;border-bottom:1px solid rgba(58,64,72,.12)}
  .reviews .review,.review:nth-child(n){grid-column:1 / -1;margin-top:0}
  .news{grid-template-columns:1fr}
  .news-body{padding:0 16px 16px}
  .compare thead{display:none}
  .compare,.compare tbody,.compare tr,.compare th,.compare td{display:block;width:100%}
  .compare tr{padding:12px 12px 8px;border-bottom:1px solid var(--c-line)}
  .compare tbody th{background:transparent;padding:4px 0;font-size:15px}
  .compare td{padding:6px 0}
  .compare td.before::before{content:"传统点检 / 孤立工控：";display:block;color:var(--c-muted);font-size:12px}
  .compare td.after::before{content:"工业物联网协同：";display:block;color:var(--c-primary);font-size:12px}
  .sticky-inner{gap:8px}
  .sticky-inner .tel small{display:none}
  .sticky-desktop{display:none}
  .legal{flex-direction:column}
}
@media (max-width:520px){
  .container{width:min(100% - 28px,var(--container))}
  h1,.hero h1,.hero-heading{font-size:28px}
  .hero-actions .btn{width:100%}
  .stats{grid-template-columns:1fr}
  .param-bar .container{gap:8px 16px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none !important}
}

/* roulang page: index */
:root {
      --copper: #C27A2A;
      --copper-deep: #9A5E1C;
      --copper-ink: #5C3810;
      --teal: #1B8A86;
      --teal-deep: #146E6B;
      --ink: #161D22;
      --cabinet: #2A333A;
      --paper: #F3EFE6;
      --sand: #E7E1D4;
      --sand-2: #DDD5C4;
      --dark: #10161A;
      --line: #C9C0B0;
      --line-strong: #2A333A;
      --text: #1C2429;
      --muted: #5B656C;
      --hair: rgba(194, 122, 42, 0.55);
      --white: #FBF8F1;
      --danger: #9B2C2C;
      --ok: #1B8A86;
      --radius-card: 8px;
      --radius-btn: 5px;
      --shadow: 2px 2px 0 rgba(22, 29, 34, 0.14);
      --shadow-hard: 3px 3px 0 rgba(22, 29, 34, 0.18);
      --container: 1220px;
      --gutter: 22px;
      --header-top: 46px;
      --nav-h: 58px;
      --dock-h: 64px;
      --font: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      --mono: "Sarasa Mono SC", "Cascadia Mono", "Consolas", ui-monospace, monospace;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    html, body { margin: 0; padding: 0; }
    body {
      font-family: var(--font);
      font-size: 17.5px;
      line-height: 1.82;
      color: var(--text);
      background: var(--paper);
      padding-bottom: calc(var(--dock-h) + 10px);
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--copper-deep); text-decoration: none; }
    a:hover { color: var(--copper); }
    a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
      outline: 2px solid var(--copper);
      outline-offset: 2px;
    }
    button, input, select, textarea { font-family: inherit; font-size: inherit; }
    button { cursor: pointer; }
    h1, h2, h3, h4 { margin: 0 0 0.55em; color: var(--ink); line-height: 1.28; letter-spacing: 0.02em; }
    h1 { font-size: 40px; }
    h2 { font-size: 28px; }
    h3 { font-size: 20px; }
    p { margin: 0 0 0.85em; }
    ul, ol { margin: 0; padding: 0; }
    .skip {
      position: absolute; left: -999px; top: 8px;
      background: var(--ink); color: #fff; padding: 8px 12px; z-index: 80;
    }
    .skip:focus { left: 8px; }
    .container { width: min(var(--container), calc(100% - var(--gutter) * 2)); margin: 0 auto; }
    .kicker {
      display: inline-flex; align-items: center; gap: 8px;
      font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em;
      color: var(--copper-deep); text-transform: none; margin-bottom: 10px;
    }
    .kicker::before { content: "▣"; color: var(--teal); }
    .lead { max-width: 760px; color: var(--muted); font-size: 17px; }
    .section {
      padding: 76px 0 80px;
      position: relative;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid transparent;
    }
    .section + .section { border-top: 3px double var(--line-strong); }
    .section-head { margin-bottom: 28px; }
    .section-head h2 { margin-bottom: 12px; }
    .grid { display: grid; gap: 18px; }
    .badge {
      display: inline-flex; align-items: center; gap: 6px;
      border: 1px solid var(--line-strong); background: var(--white);
      color: var(--ink); font-size: 12px; padding: 4px 8px;
      border-radius: 4px; font-family: var(--mono); letter-spacing: 0.04em;
    }
    .badge.teal { border-color: var(--teal); color: var(--teal-deep); }
    .badge.copper { border-color: var(--copper); color: var(--copper-deep); }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 0 18px; border-radius: var(--radius-btn);
      border: 1px solid transparent; font-weight: 700; letter-spacing: 0.04em;
      transition: background .18s ease, border-color .18s ease, transform .12s ease, color .18s ease;
    }
    .btn-primary { background: var(--copper); color: #fff; box-shadow: var(--shadow); }
    .btn-primary:hover { background: var(--copper-deep); color: #fff; transform: translate(1px, 1px); }
    .btn-primary:active { transform: translate(2px, 2px); box-shadow: none; }
    .btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
    .btn-ghost:hover { background: var(--ink); color: var(--white); }
    .btn-light { background: var(--white); color: var(--ink); border-color: var(--sand-2); }
    .btn-light:hover { border-color: var(--copper); color: var(--copper-deep); }
    .icon-line {
      width: 28px; height: 28px; border: 1px solid currentColor; border-radius: 4px;
      display: inline-grid; place-items: center; font-family: var(--mono); font-size: 12px;
    }
    .site-header {
      position: relative; z-index: 40; background: var(--paper);
      border-bottom: 1px solid var(--line-strong);
    }
    .topbar {
      background: var(--ink); color: #d9d3c7; min-height: var(--header-top);
      display: flex; align-items: center;
    }
    .topbar-inner {
      display: flex; align-items: center; justify-content: space-between; gap: 16px;
      width: min(var(--container), calc(100% - 32px)); margin: 0 auto; padding: 8px 0;
    }
    .brand { display: flex; align-items: baseline; gap: 10px; color: #fff; }
    .brand:hover { color: #fff; }
    .brand-mark {
      font-size: 18px; font-weight: 800; letter-spacing: 0.08em; color: #fff;
      border-left: 3px solid var(--copper); padding-left: 10px;
    }
    .brand-sub { font-size: 13px; color: var(--copper); letter-spacing: 0.16em; font-family: var(--mono); }
    .top-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 18px; font-size: 13px; }
    .top-meta a { color: #d9d3c7; }
    .top-meta a:hover { color: #fff; }
    .trust-slot { display: flex; gap: 8px; flex-wrap: wrap; }
    .nav-row {
      background: var(--paper); min-height: var(--nav-h);
      border-top: 1px solid var(--line); position: sticky; top: 0; z-index: 39;
    }
    .nav-inner {
      width: min(var(--container), calc(100% - 32px)); margin: 0 auto;
      display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: var(--nav-h);
    }
    .nav-links { display: flex; flex-wrap: wrap; gap: 4px 0; }
    .nav-links a {
      position: relative; color: var(--ink); padding: 16px 14px; font-size: 15px; font-weight: 600;
    }
    .nav-links a:hover { color: var(--copper-deep); }
    .nav-links a.is-active { color: var(--copper-deep); }
    .nav-links a.is-active::after,
    .nav-links a:hover::after {
      content: ""; position: absolute; left: 14px; right: 14px; bottom: 8px; height: 2px; background: var(--copper);
    }
    .menu-toggle {
      display: none; width: 44px; height: 44px; border: 1px solid var(--ink); background: var(--white);
      border-radius: 4px; align-items: center; justify-content: center; flex-direction: column; gap: 5px;
    }
    .menu-toggle span { width: 18px; height: 2px; background: var(--ink); display: block; }
    .hero {
      position: relative; background: var(--dark); color: #efe8da; padding: 0; border: 0;
    }
    .hero .slides { position: relative; min-height: 620px; overflow: hidden; }
    .slide {
      position: absolute; inset: 0; opacity: 0; pointer-events: none;
      transition: opacity .45s ease;
    }
    .slide.is-on { opacity: 1; pointer-events: auto; z-index: 1; }
    .slide img {
      width: 100%; height: 100%; object-fit: cover; filter: saturate(0.86) contrast(1.05);
    }
    .slide .mask {
      position: absolute; inset: 0;
      background:
        linear-gradient(90deg, rgba(16,22,26,.88) 0%, rgba(16,22,26,.62) 48%, rgba(16,22,26,.28) 100%),
        repeating-linear-gradient(0deg, transparent 0 22px, rgba(194,122,42,.08) 22px 23px);
    }
    .slide-copy {
      position: absolute; inset: 0; z-index: 2; display: flex; align-items: center;
    }
    .slide-copy .container { padding: 70px 0 150px; }
    .hero h1, .hero .hero-title {
      font-size: 42px; color: #fff; max-width: 16ch; margin-bottom: 16px;
    }
    .hero .hero-lead { max-width: 640px; color: #d7d0c3; font-size: 17.5px; }
    .cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
    .hero-ctrl {
      position: absolute; z-index: 3; right: 24px; top: 24px; display: flex; gap: 8px;
    }
    .hero-ctrl button, .pager button {
      width: 44px; height: 44px; border: 1px solid #c9c0b0; background: rgba(16,22,26,.55); color: #fff; border-radius: 4px;
    }
    .hero-ctrl button:hover, .pager button:hover { border-color: var(--copper); color: var(--copper); }
    .pager {
      position: absolute; z-index: 3; left: 50%; bottom: 118px; transform: translateX(-50%);
      display: flex; gap: 8px; align-items: center;
    }
    .dot {
      width: 10px; height: 10px; border: 1px solid var(--copper); background: transparent; border-radius: 2px; padding: 0;
    }
    .dot.is-on { background: var(--copper); }
    .roadmap {
      position: relative; z-index: 4; margin-top: -92px; padding-bottom: 28px;
    }
    .roadmap-board {
      background: var(--white); border: 1px solid var(--ink); box-shadow: var(--shadow-hard);
      display: grid; grid-template-columns: 180px 1fr auto; gap: 0; border-radius: 8px; overflow: hidden;
    }
    .roadmap-label {
      background: var(--cabinet); color: #efe8da; padding: 18px 16px; font-family: var(--mono); font-size: 13px;
      display: flex; flex-direction: column; justify-content: center; gap: 6px;
    }
    .roadmap-label strong { font-size: 16px; color: #fff; letter-spacing: 0.08em; }
    .nodes { display: grid; grid-template-columns: repeat(4, 1fr); }
    .node {
      padding: 16px 14px; border-left: 1px solid var(--line); min-height: 92px;
    }
    .node small { display: block; font-family: var(--mono); color: var(--teal-deep); font-size: 12px; }
    .node b { display: block; margin: 4px 0; }
    .node span { color: var(--muted); font-size: 13px; }
    .roadmap-cta {
      display: flex; align-items: center; padding: 16px; background: #f7f1e4; border-left: 1px solid var(--line);
    }
    .sell { background: var(--sand); }
    .sell-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .panel {
      background: var(--paper); border: 1px solid var(--cabinet); border-radius: 8px;
      padding: 22px 20px 18px; box-shadow: var(--shadow); min-height: 220px;
      display: flex; flex-direction: column;
    }
    .panel:hover { border-color: var(--copper); }
    .panel .no { font-family: var(--mono); color: var(--copper-deep); font-size: 13px; letter-spacing: 0.14em; }
    .panel h3 { margin: 10px 0 8px; }
    .panel p { color: var(--muted); flex: 1; }
    .metric {
      margin-top: 12px; border-top: 1px dashed var(--line); padding-top: 10px;
      font-family: var(--mono); font-size: 13px; color: var(--ink);
    }
    .split { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 36px; align-items: center; }
    .split.reverse { grid-template-columns: 0.95fr 1.05fr; }
    .frame {
      border: 1px solid var(--ink); border-radius: 8px; overflow: hidden; position: relative; box-shadow: var(--shadow);
    }
    .frame img { width: 100%; height: 430px; object-fit: cover; }
    .frame figcaption {
      position: absolute; left: 0; right: 0; bottom: 0; background: rgba(16,22,26,.72);
      color: #efe8da; font-size: 12px; padding: 8px 12px; font-family: var(--mono);
    }
    .param-table {
      width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 15px;
    }
    .param-table th, .param-table td {
      border: 1px solid var(--line-strong); padding: 8px 10px; text-align: left;
    }
    .param-table th { background: var(--sand); width: 38%; font-weight: 700; }
    .chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 4px; }
    .scene-board { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .scene-card {
      display: grid; grid-template-columns: 180px 1fr; background: var(--white);
      border: 1px solid var(--cabinet); border-radius: 8px; overflow: hidden;
    }
    .scene-card:hover { border-color: var(--copper); }
    .scene-card img { width: 100%; height: 100%; min-height: 180px; object-fit: cover; }
    .scene-body { padding: 16px 16px 14px; }
    .steps { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 14px; }
    .steps li {
      list-style: none; font-size: 12px; font-family: var(--mono); border: 1px solid var(--line-strong);
      padding: 4px 8px; background: var(--paper);
    }
    .steps li::before { content: counter(s) " "; }
    .matrix { background: var(--sand); }
    .matrix-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .m-card {
      background: var(--paper); border: 1px solid var(--cabinet); border-radius: 8px; padding: 18px;
      min-height: 210px; display: flex; flex-direction: column;
    }
    .m-card:hover { border-color: var(--copper); }
    .m-card p { color: var(--muted); flex: 1; }
    .fine { margin-top: 10px; font-family: var(--mono); font-size: 12px; color: var(--teal-deep); border-top: 1px solid var(--line); padding-top: 8px; }
    .products { background: var(--paper); }
    .product-stage { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 16px; }
    .product-side { display: grid; gap: 16px; }
    .p-card {
      background: var(--white); border: 1px solid var(--cabinet); border-radius: 8px; overflow: hidden;
    }
    .p-card:hover { border-color: var(--copper); }
    .p-card img { width: 100%; height: 210px; object-fit: cover; }
    .p-card.feature img { height: 280px; }
    .p-body { padding: 16px 18px 18px; }
    .p-body ul { margin: 8px 0 14px; padding-left: 18px; color: var(--muted); }
    .p-body li { margin: 4px 0; }
    .dark-case {
      background: var(--dark); color: #d9d3c7; border-top: 1px solid #000; overflow: hidden;
    }
    .dark-case h2, .dark-case h3 { color: #fff; }
    .dark-wrap { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 28px; align-items: stretch; }
    .dark-wrap img { width: 100%; height: 100%; min-height: 420px; object-fit: cover; border: 1px solid var(--copper); }
    .case-points { display: grid; gap: 12px; }
    .case-item {
      border: 1px solid rgba(194,122,42,.45); padding: 14px 16px; background: rgba(16,22,26,.4);
    }
    .case-item strong { color: #fff; display: block; margin-bottom: 4px; }
    .quote-line { font-family: var(--mono); color: var(--copper); margin-top: 8px; }
    .stories { background: var(--paper); }
    .story-layout { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 16px; }
    .story-main {
      display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--cabinet); border-radius: 8px; overflow: hidden; background: var(--white);
    }
    .story-main img { width: 100%; height: 100%; min-height: 280px; object-fit: cover; }
    .story-main blockquote { margin: 0; padding: 22px; }
    .story-side { display: grid; gap: 16px; }
    .story-mini { border: 1px solid var(--cabinet); border-radius: 8px; padding: 16px; background: var(--sand); }
    .who { font-family: var(--mono); font-size: 12px; color: var(--teal-deep); margin-top: 10px; }
    .stats {
      background: var(--cabinet); color: #efe8da; padding: 36px 0;
    }
    .stat-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; }
    .stat {
      text-align: left; border-left: 2px solid var(--copper); padding: 8px 10px;
    }
    .stat b {
      display: block; font-size: 28px; font-family: var(--mono); font-variant-numeric: tabular-nums; color: #fff;
    }
    .stat span { font-size: 13px; color: #cfc6b6; }
    .compare { background: var(--sand); }
    .compare-switch { display: flex; gap: 8px; margin-bottom: 16px; }
    .compare-switch button[aria-pressed="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }
    .diff {
      display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--ink); background: var(--white);
    }
    .diff h3 { padding: 14px 16px; margin: 0; background: var(--sand); border-bottom: 1px solid var(--ink); }
    .diff.single .col:nth-child(2) { display: none; }
    .diff.single { grid-template-columns: 1fr; }
    .diff dl { margin: 0; }
    .diff dt, .diff dd { padding: 12px 16px; margin: 0; border-bottom: 1px solid var(--line); }
    .diff dt { font-weight: 700; background: #f7f2e8; }
    .diff dd { color: var(--muted); }
    .reviews { background: var(--paper); }
    .review-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 14px; align-items: start; }
    .review {
      border: 1px solid var(--cabinet); border-radius: 8px; padding: 18px; background: var(--white);
    }
    .review:nth-child(2) { margin-top: 28px; }
    .review:nth-child(3) { margin-top: 12px; }
    .stars { color: var(--copper); letter-spacing: 2px; font-size: 14px; }
    .news { background: var(--sand); }
    .news-list { display: grid; gap: 12px; }
    .news-item {
      display: grid; grid-template-columns: 160px 1fr auto; gap: 16px; align-items: center;
      background: var(--white); border: 1px solid var(--cabinet); border-radius: 8px; padding: 10px;
    }
    .news-item img { width: 160px; height: 96px; object-fit: cover; }
    .news-item time { font-family: var(--mono); font-size: 12px; color: var(--muted); }
    .gateway { background: var(--paper); }
    .gate-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
    .flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
    .flow li {
      list-style: none; border: 1px solid var(--ink); padding: 14px 12px; background: var(--sand); min-height: 110px;
    }
    .flow b { display: block; font-family: var(--mono); color: var(--copper-deep); margin-bottom: 6px; }
    .ledger {
      width: 100%; border-collapse: collapse; font-size: 14.5px; background: var(--white);
    }
    .ledger th, .ledger td { border: 1px solid var(--cabinet); padding: 8px 10px; }
    .ledger th { background: var(--cabinet); color: #efe8da; font-weight: 600; }
    .ledger td:first-child { font-family: var(--mono); width: 42%; }
    .faq { background: var(--sand); }
    .acc { border: 1px solid var(--cabinet); background: var(--white); }
    .acc + .acc { border-top: 0; }
    .acc-btn {
      width: 100%; text-align: left; background: #f7f2e8; border: 0; border-bottom: 1px solid var(--line);
      min-height: 52px; padding: 12px 16px; display: flex; justify-content: space-between; gap: 12px; font-weight: 700;
    }
    .acc-btn:hover, .acc-btn[aria-expanded="true"] { background: #efe6d3; }
    .acc-panel { display: none; padding: 12px 16px 16px; color: var(--muted); }
    .acc.is-open .acc-panel { display: block; }
    .guard { background: var(--paper); padding: 28px 0 36px; }
    .guard-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .guard-item {
      border: 1px solid var(--copper); border-radius: 6px; padding: 14px; background: #fbf6ea; min-height: 92px;
    }
    .consult {
      background: var(--dark); color: #d9d3c7;
      background-image:
        linear-gradient(180deg, rgba(16,22,26,.92), rgba(16,22,26,.92)),
        url("/assets/images/ed6e61c569af85b6.webp");
      background-size: cover; background-position: center;
    }
    .consult h2 { color: #fff; }
    .consult-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 28px; }
    .form {
      background: var(--paper); color: var(--text); padding: 20px; border: 1px solid var(--copper); border-radius: 8px;
    }
    .form label { display: block; font-weight: 700; margin: 10px 0 6px; }
    .form input, .form select, .form textarea {
      width: 100%; border: 1px solid var(--cabinet); background: #fff; border-radius: 4px; min-height: 44px; padding: 8px 10px;
    }
    .form textarea { min-height: 96px; resize: vertical; }
    .form .err { color: var(--danger); font-size: 13px; margin: 4px 0 0; min-height: 18px; }
    .form .okbox {
      display: none; background: #e7f3f2; border: 1px solid var(--teal); color: var(--teal-deep); padding: 12px; margin-bottom: 12px;
    }
    .form.is-ok .okbox { display: block; }
    .form .hint { font-size: 13px; color: var(--muted); margin-top: 8px; }
    .site-footer {
      background: var(--ink); color: #cfc6b6; padding: 42px 0 90px; border-top: 3px double var(--copper);
    }
    .foot-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 24px; }
    .site-footer h3 { color: #fff; font-size: 16px; }
    .site-footer a { color: #cfc6b6; }
    .site-footer a:hover { color: #fff; }
    .foot-links { list-style: none; }
    .foot-links li { margin: 6px 0; }
    .icp { margin-top: 22px; padding-top: 14px; border-top: 1px solid #2a333a; font-size: 13px; color: #9aa19f; }
    .dock {
      position: fixed; left: 0; right: 0; bottom: 0; z-index: 50;
      background: #141b20; color: #efe8da; border-top: 2px solid var(--copper);
      min-height: var(--dock-h); display: flex; align-items: center;
    }
    .dock-inner {
      width: min(var(--container), calc(100% - 24px)); margin: 0 auto;
      display: grid; grid-template-columns: 1fr auto auto; gap: 12px; align-items: center;
    }
    .dock a.phone { color: #fff; font-weight: 800; font-family: var(--mono); min-height: 44px; display: inline-flex; align-items: center; }
    .drawer {
      display: none; position: fixed; inset: 0; background: rgba(16,22,26,.55); z-index: 70;
    }
    .drawer.is-open { display: block; }
    .drawer-panel {
      position: absolute; right: 0; top: 0; bottom: 0; width: min(86vw, 360px);
      background: var(--paper); padding: 18px; overflow: auto; border-left: 1px solid var(--ink);
    }
    .drawer-panel a { display: block; padding: 12px 8px; min-height: 44px; color: var(--ink); border-bottom: 1px solid var(--line); }
    .close-drawer { width: 44px; height: 44px; border: 1px solid var(--ink); background: #fff; }
    @media (max-width: 1200px) {
      h1, .hero h1, .hero .hero-title { font-size: 34px; }
      .stat-row { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 992px) {
      .split, .split.reverse, .dark-wrap, .story-layout, .product-stage, .gate-grid, .consult-grid, .foot-grid, .roadmap-board {
        grid-template-columns: 1fr;
      }
      .nodes { grid-template-columns: 1fr 1fr; }
      .matrix-grid, .sell-grid { grid-template-columns: 1fr 1fr; }
      .scene-card { grid-template-columns: 1fr; }
      .scene-card img { height: 180px; }
      .review-grid { grid-template-columns: 1fr 1fr; }
      .flow { grid-template-columns: 1fr 1fr; }
      .hero .slides { min-height: 560px; }
      .frame img { height: 320px; }
    }
    @media (max-width: 768px) {
      body { font-size: 17px; }
      .menu-toggle { display: inline-flex; }
      .nav-links { display: none; }
      .top-meta .hide-sm { display: none; }
      .sell-grid, .matrix-grid, .guard-row, .diff, .review-grid, .news-item, .story-main, .stat-row {
        grid-template-columns: 1fr;
      }
      .news-item img { width: 100%; height: 160px; }
      .hero .slides { min-height: auto; aspect-ratio: 4/5; }
      .slide-copy .container { padding: 48px 0 170px; }
      .hero h1, .hero .hero-title { font-size: 28px; max-width: 12ch; }
      .pager { bottom: 168px; }
      .roadmap { margin-top: -120px; }
      .p-card img, .p-card.feature img { height: 190px; }
      .dock-inner { grid-template-columns: 1fr 1fr; }
      .dock .dock-copy { display: none; }
      .review:nth-child(2), .review:nth-child(3) { margin-top: 0; }
    }
    @media (max-width: 375px) {
      h2 { font-size: 22px; }
      .container, .nav-inner, .topbar-inner { width: calc(100% - 24px); }
      .cta-row .btn { width: 100%; }
      .nodes { grid-template-columns: 1fr; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { animation: none !important; transition: none !important; }
    }