/* roulang page: index */
:root{
  --c-teal:#1B6B63;
  --c-teal-d:#165850;
  --c-amber:#D9822B;
  --c-bg:#F4F1EA;
  --c-paper:#FBFAF6;
  --c-ink:#1A1F24;
  --c-mute:#5B636A;
  --c-inv:#F3F0E8;
  --c-rail:#8D969C;
  --c-dark:#161B1F;
  --c-darker:#101417;
  --r:8px;
  --sh:0 8px 24px rgba(16,20,23,.06);
  --gap:24px;
  --w:1240px;
  --top:40px;
  --nav:64px;
  --font:"PingFang SC","Hiragino Sans GB","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
}
*,*:before,*:after{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0}
body{
  font-family:var(--font);
  color:var(--c-ink);
  background:var(--c-paper);
  font-size:16px;
  font-weight:400;
  line-height:1.82;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-teal);text-decoration:none;transition:color .2s}
a:hover{color:var(--c-amber)}
button,input,select,textarea{font-family:inherit}
button{cursor:pointer}
h1,h2,h3{margin:0;font-weight:700;line-height:1.28;color:var(--c-ink)}
h1{font-size:44px}
h2{font-size:32px}
h3{font-size:19px}
p{margin:0 0 .95em}
ul{margin:0;padding:0;list-style:none}
.container{width:min(var(--w),calc(100% - 40px));margin:0 auto}
.skip{position:absolute;left:-999px;top:0}
.skip:focus{left:16px;top:16px;background:#fff;padding:8px 12px;z-index:80}
.topbar{
  background:#EFEBE3;color:var(--c-ink);font-size:13px;height:var(--top);
  display:flex;align-items:center;border-bottom:1px solid #e3ddd3;
  transition:transform .25s ease,opacity .25s;
}
.header.is-hide-top .topbar{transform:translateY(-100%);opacity:0;pointer-events:none}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;width:min(var(--w),calc(100% - 40px));margin:0 auto}
.topbar a{color:var(--c-ink)}
.topbar a:hover{color:var(--c-teal)}
.top-l,.top-r{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.top-r{color:var(--c-mute)}
.dot{width:4px;height:4px;border-radius:50%;background:var(--c-amber);display:inline-block}
header.site{
  position:sticky;top:0;z-index:50;
}
.navrow{
  background:#fff;border-bottom:1px solid var(--c-rail);
  height:var(--nav);display:flex;align-items:center;
}
.nav-inner{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;width:min(var(--w),calc(100% - 40px));margin:0 auto}
.logo{display:flex;align-items:center;gap:10px;color:var(--c-ink);min-height:44px}
.logo-mark{
  width:34px;height:34px;border:1px solid var(--c-teal);display:grid;place-items:center;
  color:var(--c-teal);font-size:12px;font-weight:700;letter-spacing:.08em;
}
.logo-txt{display:flex;flex-direction:column;line-height:1.15}
.logo-txt b{font-size:15px;font-weight:700}
.logo-txt span{font-size:12px;color:var(--c-mute);font-weight:400}
.menu{display:flex;justify-content:center;gap:4px;flex-wrap:wrap}
.menu a{
  color:var(--c-ink);font-size:14px;padding:10px 12px;min-height:44px;display:inline-flex;align-items:center;
  position:relative;letter-spacing:.02em;
}
.menu a:hover{color:var(--c-teal)}
.menu a.is-on:after,.menu a:hover:after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;background:var(--c-teal);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;
  border-radius:6px;border:1px solid transparent;letter-spacing:.04em;font-size:14px;font-weight:600;
  transition:background .2s,transform .2s,box-shadow .2s,border-color .2s,color .2s;
}
.btn:focus-visible,.menu a:focus-visible,.nav-toggle:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,.faq-q:focus-visible,.hero-btn:focus-visible{
  outline:2px solid var(--c-amber);outline-offset:3px;
}
.btn-primary{background:var(--c-teal);color:#fff}
.btn-primary:hover{background:var(--c-teal-d);color:#fff;box-shadow:inset 0 -2px 0 var(--c-amber)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--c-inv);border-color:#c5cbc8}
.btn-ghost:hover{border-color:var(--c-amber);color:#fff}
.btn-line{background:#fff;color:var(--c-ink);border-color:var(--c-rail)}
.btn-line:hover{border-color:var(--c-amber);color:var(--c-teal);transform:translateY(-2px)}
.nav-cta .btn{padding:0 14px;font-size:13px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-rail);background:#fff;border-radius:6px;
  flex-direction:column;justify-content:center;align-items:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink)}
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(86vw,360px);background:#fff;z-index:60;
  transform:translateX(100%);transition:transform .28s ease;box-shadow:-16px 0 40px rgba(16,20,23,.12);
  display:flex;flex-direction:column;padding:24px 20px;
}
.drawer.open{transform:none}
.drawer a{min-height:48px;display:flex;align-items:center;border-bottom:1px solid #eee;color:var(--c-ink);font-size:16px}
.mask{position:fixed;inset:0;background:rgba(16,20,23,.45);z-index:55;opacity:0;pointer-events:none;transition:opacity .2s}
.mask.show{opacity:1;pointer-events:auto}
.hero{position:relative;height:84vh;min-height:560px;overflow:hidden;background:var(--c-darker);color:var(--c-inv)}
.slides{position:absolute;inset:0}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .6s ease;pointer-events:none}
.slide.on{opacity:1;pointer-events:auto}
.slide img{width:100%;height:100%;object-fit:cover;filter:saturate(.86) contrast(1.05)}
.vignette{position:absolute;inset:0;background:
  radial-gradient(120% 90% at 20% 80%,rgba(16,20,23,.18),transparent 50%),
  linear-gradient(90deg,rgba(16,20,23,.78) 0%,rgba(16,20,23,.42) 46%,rgba(16,20,23,.22) 100%),
  linear-gradient(180deg,rgba(16,20,23,.2),rgba(16,20,23,.55));
  pointer-events:none}
.gridline{position:absolute;inset:0;background-image:
  linear-gradient(rgba(243,240,232,.07) 1px,transparent 1px),
  linear-gradient(90deg,rgba(243,240,232,.06) 1px,transparent 1px);
  background-size:72px 48px;opacity:.35;mix-blend-mode:overlay;pointer-events:none}
.hero-copy{position:relative;z-index:2;height:100%;display:flex;align-items:flex-end;padding:0 0 88px}
.kicker{font-size:13px;letter-spacing:.18em;color:var(--c-amber);margin-bottom:12px}
.hero h1,.slide-title{font-size:46px;color:#fff;max-width:16ch;font-weight:700;margin-bottom:16px}
.lead{max-width:640px;color:#E7E2D6;font-size:16px;line-height:1.85;margin-bottom:22px}
.badges{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.badge{border:1px solid rgba(141,150,156,.7);color:#E7E2D6;font-size:12px;padding:4px 10px;letter-spacing:.06em}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-ctrl{position:absolute;z-index:3;bottom:28px;right:4%;display:flex;align-items:center;gap:10px}
.hero-btn{
  width:44px;height:44px;border:1px solid #8D969C;background:rgba(16,20,23,.35);color:#fff;border-radius:6px;
}
.hero-btn:hover{border-color:var(--c-amber)}
.dots{display:flex;gap:8px}
.dots button{width:22px;height:4px;border:0;background:#8D969C;padding:0}
.dots button.on{background:var(--c-amber)}
main section{scroll-margin-top:84px}
.sec{padding:104px 0;background:var(--c-paper)}
.sec.alt{background:var(--c-bg)}
.sec-h{margin-bottom:36px;max-width:760px}
.sec-h .bar{width:28px;height:3px;background:var(--c-amber);margin-bottom:14px}
.sec-h p{color:var(--c-mute);margin-top:12px}
.matrix{display:grid;grid-template-columns:minmax(260px,0.9fr) 1.4fr;gap:36px;align-items:stretch}
.matrix-note{background:#fff;border:1px solid #e4e0d8;padding:36px 32px;box-shadow:var(--sh);border-radius:var(--r)}
.matrix-note ul{margin-top:18px}
.matrix-note li{padding:8px 0 8px 16px;position:relative;color:var(--c-mute)}
.matrix-note li:before{content:"";width:6px;height:6px;background:var(--c-teal);position:absolute;left:0;top:16px}
.mods{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.mod{
  background:#fff;border:1px solid #e4e0d8;border-radius:var(--r);padding:20px 18px 18px;min-height:168px;
  transition:transform .2s,box-shadow .2s,border-color .2s;display:flex;flex-direction:column;gap:8px;
}
.mod:hover{transform:translateY(-4px);border-color:var(--c-amber);box-shadow:var(--sh)}
.mod svg{width:28px;height:28px;stroke:var(--c-rail);fill:none;stroke-width:1.6}
.mod a{margin-top:auto;font-size:13px;color:var(--c-teal)}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.frame{position:relative;border-radius:var(--r);overflow:hidden;box-shadow:var(--sh);min-height:420px}
.frame img{width:100%;height:100%;object-fit:cover;min-height:420px}
.spec{margin:18px 0;border:1px solid #e4e0d8;background:#fff;padding:16px 18px;border-radius:var(--r)}
.spec dt{font-size:12px;color:var(--c-mute);letter-spacing:.08em}
.spec dd{margin:0 0 8px;font-weight:600}
.adv{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{
  background:#fff;border:1px solid #e4e0d8;border-radius:var(--r);padding:24px 22px;box-shadow:var(--sh);
  transition:transform .2s,border-color .2s;
}
.card:hover{transform:translateY(-4px);border-color:var(--c-amber)}
.metric{font-size:28px;color:var(--c-teal);font-weight:700;letter-spacing:.02em}
.card p{color:var(--c-mute);margin:8px 0 0;font-size:15px}
.card:nth-child(2){background:#f7f4ee}
.card:nth-child(3) .metric{color:var(--c-amber)}
.card:nth-child(5){border-top:3px solid var(--c-teal)}
.card:nth-child(6){background:var(--c-dark);color:var(--c-inv)}
.card:nth-child(6) h3,.card:nth-child(6) .metric{color:#fff}
.card:nth-child(6) p{color:#c9c4b8}
.strip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;background:#fff;border:1px solid #e4e0d8;border-radius:var(--r);padding:28px 12px}
.stat{text-align:left;padding:8px 18px;border-left:1px solid #e6e1d8}
.stat:first-child{border-left:0}
.num{font-size:34px;font-weight:700;color:var(--c-teal);line-height:1}
.num em{font-style:normal;font-size:14px;margin-left:4px;color:var(--c-amber)}
.stat small{display:block;margin-top:8px;color:var(--c-mute);font-size:13px}
.equip{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:16px}
.equip-card{position:relative;min-height:430px;border-radius:var(--r);overflow:hidden;box-shadow:var(--sh);color:#fff}
.equip-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.equip-card .shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,20,23,.15),rgba(16,20,23,.82))}
.equip-body{position:absolute;left:0;right:0;bottom:0;padding:24px}
.equip-body h3{color:#fff;margin-bottom:10px}
.equip-body li{font-size:14px;color:#E7E2D6;padding:3px 0}
.equip-body a{display:inline-block;margin-top:12px;color:#fff;border-bottom:1px solid var(--c-amber);padding-bottom:2px}
.timeline{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;position:relative}
.timeline:before{
  content:"";position:absolute;left:0;right:0;top:23px;height:2px;background:linear-gradient(90deg,var(--c-teal),var(--c-amber));
}
.step{position:relative;padding-top:0}
.no{
  width:46px;height:46px;border-radius:6px;background:var(--c-amber);color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:700;margin-bottom:14px;position:relative;z-index:1;
}
.step h3{margin-bottom:8px}
.step p{color:var(--c-mute);font-size:14px}
.bento{display:grid;grid-template-columns:1.4fr 1fr;grid-template-rows:1fr 1fr;gap:16px;min-height:520px}
.scene{position:relative;overflow:hidden;border-radius:var(--r);min-height:240px;color:#fff;display:flex;align-items:flex-end;padding:24px;background:var(--c-dark) center/cover no-repeat}
.scene.main{grid-row:1 / span 2;min-height:520px}
.scene:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,20,23,.1),rgba(16,20,23,.78))}
.scene .t{position:relative;z-index:1}
.scene h3{color:#fff;margin-bottom:8px}
.scene p{color:#E7E2D6;margin:0;font-size:15px}
.scene a{color:var(--c-amber);font-size:13px;display:inline-block;margin-top:10px}
.dark{background:var(--c-darker);color:var(--c-inv);padding:108px 0;position:relative}
.dark:before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--c-amber)}
.dark-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.dark h2{color:#fff;font-size:34px;max-width:14ch}
.ideas{margin-top:28px}
.ideas li{padding:14px 0;border-bottom:1px solid rgba(141,150,156,.28);color:#D9D4C8}
.ideas b{color:#fff;display:block;margin-bottom:4px}
.dark .frame{min-height:360px;border:1px solid rgba(141,150,156,.35)}
.masonry{display:grid;grid-template-columns:1.2fr 1fr 1fr;grid-auto-rows:210px;gap:14px}
.tile{position:relative;overflow:hidden;border-radius:var(--r);cursor:pointer;border:1px solid #e4e0d8}
.tile.big{grid-row:span 2}
.tile img{width:100%;height:100%;object-fit:cover}
.tile .cap{position:absolute;inset:auto 0 0;padding:16px;background:linear-gradient(180deg,transparent,rgba(16,20,23,.86));color:#fff}
.tile .cap small{color:#D9D4C8}
.tile:hover{outline:1px solid var(--c-amber)}
.stories{display:flex;flex-direction:column;gap:28px}
.story{display:grid;grid-template-columns:.72fr 1.28fr;gap:28px;background:#fff;border:1px solid #e4e0d8;border-radius:var(--r);overflow:hidden;box-shadow:var(--sh)}
.story img{width:100%;height:100%;object-fit:cover;min-height:260px}
.story-body{padding:28px 28px 28px 8px}
.quote{font-size:18px;line-height:1.7;position:relative;padding-left:22px}
.quote:before{content:"“";position:absolute;left:0;top:-8px;color:var(--c-rail);font-size:36px}
.who{margin-top:16px;color:var(--c-mute);font-size:14px}
.data-dark{background:var(--c-dark);color:#fff;padding:64px 0}
.data-dark .strip{background:transparent;border:0;padding:0}
.data-dark .stat{border-left-color:rgba(141,150,156,.3)}
.data-dark .num{color:#fff}
.data-dark small{color:#C9C4B8}
.reviews{display:grid;grid-template-columns:1.1fr 1fr;gap:18px}
.rev{background:#fff;border:1px solid #e4e0d8;border-radius:var(--r);padding:22px;box-shadow:var(--sh)}
.rev.side{background:var(--c-bg);grid-row:span 2;display:flex;flex-direction:column;justify-content:center}
.rev p{color:var(--c-mute)}
.rev .who{margin-top:12px;color:var(--c-ink);font-weight:600}
.news{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.news article{background:#fff;border:1px solid #e4e0d8;border-radius:var(--r);overflow:hidden;box-shadow:var(--sh);transition:transform .2s,border-color .2s}
.news article:hover{transform:translateY(-4px);border-color:var(--c-amber)}
.news img{height:180px;width:100%;object-fit:cover}
.news .pad{padding:18px}
.news time{font-size:12px;color:var(--c-mute);letter-spacing:.06em}
.more{margin-top:22px}
.wall{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.brand-cell{
  background:#fff;border:1px solid #e4e0d8;min-height:88px;display:flex;align-items:center;justify-content:center;
  color:#9aa1a6;filter:grayscale(1);opacity:.78;border-radius:var(--r);font-size:13px;letter-spacing:.08em;transition:filter .2s,opacity .2s,border-color .2s;
}
.brand-cell:hover{filter:none;opacity:1;border-color:var(--c-amber);color:var(--c-ink)}
.faq-item{border-bottom:1px solid #e4e0d8;background:#fff}
.faq-q{
  width:100%;min-height:56px;background:#fff;border:0;text-align:left;padding:0 18px;display:flex;justify-content:space-between;align-items:center;
  font-size:16px;font-weight:600;color:var(--c-ink);
}
.faq-q i{width:10px;height:10px;border-right:2px solid var(--c-rail);border-bottom:2px solid var(--c-rail);transform:rotate(45deg);transition:transform .2s;margin-right:6px}
.faq-item.open .faq-q i{transform:rotate(225deg)}
.faq-a{display:none;background:#F6F3EC;padding:8px 18px 18px;color:var(--c-mute)}
.faq-item.open .faq-a{display:block}
.ensure{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.ens{background:#fff;border:1px solid #e4e0d8;border-radius:var(--r);padding:20px;display:flex;gap:12px;align-items:flex-start}
.ens svg{width:28px;height:28px;stroke:var(--c-teal);fill:none;stroke-width:1.6;flex:0 0 28px}
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px}
form.panel, .info-panel{background:#fff;border:1px solid #e4e0d8;border-radius:var(--r);padding:28px;box-shadow:var(--sh)}
label{display:block;font-size:13px;margin:0 0 6px;color:var(--c-ink)}
.field{margin-bottom:14px}
input,select,textarea{
  width:100%;min-height:44px;border:1px solid var(--c-rail);background:#FBFAF6;border-radius:6px;padding:8px 12px;color:var(--c-ink);font-size:15px;
}
textarea{min-height:110px;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:var(--c-teal);outline:none;background:#fff}
.err{color:var(--c-amber);font-size:12px;min-height:16px;margin-top:4px}
.ok{display:none;background:#e8f3f1;color:var(--c-teal);padding:10px 12px;border-radius:6px;margin-bottom:12px}
.info-panel li{padding:10px 0;border-bottom:1px solid #eee;color:var(--c-mute)}
.info-panel b{color:var(--c-ink);display:block}
footer.site{background:var(--c-darker);color:#C9C4B8;padding:64px 0 24px;font-size:14px}
.fg{display:grid;grid-template-columns:1.3fr .9fr 1fr .9fr;gap:28px}
footer h3{color:#fff;font-size:16px;margin-bottom:14px}
footer a{color:#C9C4B8}
footer a:hover{color:var(--c-amber)}
.flog{color:#fff;font-weight:700;margin-bottom:10px}
.copy{margin-top:36px;padding-top:18px;border-top:1px solid rgba(141,150,156,.25);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:#A8B0B4;font-size:13px}
.layer{position:fixed;inset:0;background:rgba(16,20,23,.62);z-index:70;display:none;align-items:center;justify-content:center;padding:24px}
.layer.show{display:flex}
.sheet{width:min(720px,100%);background:#fff;border-radius:var(--r);padding:28px;position:relative}
.sheet img{width:100%;height:220px;object-fit:cover;border-radius:6px;margin-bottom:14px}
.x{position:absolute;right:12px;top:12px;width:44px;height:44px;border:0;background:transparent;font-size:22px}
@media (max-width:1440px){
  h1,.hero h1,.slide-title{font-size:42px}
}
@media (max-width:1024px){
  .nav-inner{grid-template-columns:auto auto;justify-content:space-between}
  .menu,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .matrix,.split,.dark-grid,.contact-grid,.reviews,.equip,.bento{grid-template-columns:1fr}
  .bento{grid-template-rows:auto}
  .scene.main{grid-row:auto;min-height:320px}
  .timeline{grid-template-columns:1fr 1fr 1fr}
  .timeline:before{display:none}
  .masonry{grid-template-columns:1fr 1fr;grid-auto-rows:200px}
  .news{grid-template-columns:1fr 1fr}
  .wall{grid-template-columns:repeat(4,1fr)}
  .fg{grid-template-columns:1fr 1fr}
  .hero{height:70vh}
  h1,.hero h1,.slide-title{font-size:36px}
  h2{font-size:28px}
  .sec{padding:72px 0}
}
@media (max-width:768px){
  .top-r,.top-l span.hide-m{display:none}
  .adv,.ensure,.strip,.data-dark .strip{grid-template-columns:1fr 1fr}
  .stat{border-left:0;border-top:1px solid #eee}
  .timeline{grid-template-columns:1fr}
  .step{display:grid;grid-template-columns:46px 1fr;gap:12px}
  .story{grid-template-columns:1fr}
  .story-body{padding:20px}
  .news,.wall,.fg{grid-template-columns:1fr 1fr}
  .equip-card{min-height:360px}
  .hero-copy{padding:0 0 72px}
  .container{width:calc(100% - 28px)}
}
@media (max-width:520px){
  h1,.hero h1,.slide-title{font-size:30px;max-width:12ch}
  h2{font-size:26px}
  .sec{padding:58px 0}
  .hero{height:68vh;min-height:520px}
  .mods,.adv,.ensure,.strip,.data-dark .strip,.news,.wall,.fg,.masonry{grid-template-columns:1fr}
  .tile.big{grid-row:span 1;min-height:220px}
  .lead{font-size:15px}
  .hero-ctrl{right:16px}
  .copy{flex-direction:column}
}

/* roulang page: index */
:root{
  --arc:#12c4a8;
  --arc-deep:#0b8f7c;
  --arc-dim:#0e6f63;
  --amber:#e3a21a;
  --amber-deep:#c48912;
  --scan:#3dff9a;
  --graphite:#171a1e;
  --graphite-2:#1f242b;
  --graphite-3:#2a3139;
  --steel:#8b939c;
  --bg:#f2f3f0;
  --paper:#f7f7f4;
  --card:#fcfcfa;
  --text:#1c2128;
  --muted:#5c6570;
  --line:#d4d7d2;
  --line-strong:#b7bdb6;
  --radius:8px;
  --radius-sm:6px;
  --shadow:0 2px 8px rgba(28,33,40,.08);
  --shadow-hover:0 6px 14px rgba(28,33,40,.12);
  --space-1:4px;
  --space-2:8px;
  --space-3:12px;
  --space-4:16px;
  --space-5:24px;
  --space-6:32px;
  --space-7:48px;
  --space-8:64px;
  --container:1240px;
  --nav-h:72px;
  --top-h:36px;
  --font:"Noto Sans SC","Source Han Sans SC","Source Han Sans","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular","Consolas",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:92px}
html,body{margin:0;padding:0;max-width:100%;overflow-x:hidden;background:var(--bg);color:var(--text);font-family:var(--font);font-size:17px;line-height:1.82}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--arc-deep);text-decoration:none}
a:hover{color:var(--arc)}
button,input,select,textarea{font-family:inherit;font-size:16px}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,p{margin:0}
:focus{outline:none}
:focus-visible{outline:2px solid var(--arc);outline-offset:3px}
.skip-link{position:absolute;left:-999px;top:8px;background:var(--arc);color:#04241f;padding:8px 12px;z-index:2000;border-radius:var(--radius-sm)}
.skip-link:focus{left:8px}
.container{width:min(100% - 32px,var(--container));margin:0 auto}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:0}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--scan);box-shadow:0 0 0 3px rgba(61,255,154,.18);display:inline-block;margin-right:8px;vertical-align:middle}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 18px;border-radius:var(--radius-sm);font-weight:600;line-height:1.2;transition:background .2s ease,transform .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease;letter-spacing:.02em}
.btn .arr{display:inline-block;transition:transform .2s ease}
.btn:hover .arr{transform:translateX(4px)}
.btn:active{transform:translateY(1px)}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.btn-primary{background:var(--arc);color:#04241f}
.btn-primary:hover{background:#0eae96;box-shadow:var(--shadow)}
.btn-ghost{background:transparent;color:#eef3f1;border:1px solid rgba(238,243,241,.45)}
.btn-ghost:hover{border-color:var(--arc);color:#fff}
.btn-amber{background:var(--amber);color:#2a1d05}
.btn-amber:hover{background:var(--amber-deep)}
.btn-line{background:var(--card);color:var(--text);border:1px solid var(--graphite-3)}
.btn-line:hover{border-color:var(--arc);box-shadow:0 0 0 2px rgba(18,196,168,.25)}
.badge{display:inline-flex;align-items:center;gap:6px;min-height:28px;padding:0 8px;border:1px solid rgba(238,243,241,.18);border-radius:4px;font-size:12px;color:#c9d0cc}
.site-header{position:relative;z-index:1000}
.topbar{background:var(--graphite);color:#c5ccc8;font-size:12px;height:var(--top-h);overflow:hidden;transition:height .25s ease,opacity .25s ease}
.topbar-inner{width:min(100% - 32px,var(--container));margin:0 auto;height:var(--top-h);display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar a{color:#dfe6e2}
.topbar a:hover{color:var(--arc)}
.topbar-left,.topbar-right{display:flex;align-items:center;gap:16px;min-height:44px}
.hotline{font-family:var(--mono);font-weight:700;color:#fff;font-size:13px}
.marks{display:flex;gap:8px}
.nav-main{background:rgba(247,247,244,.96);border-bottom:1px solid var(--line);backdrop-filter:saturate(1.2)}
.nav-inner{width:min(100% - 32px,var(--container));margin:0 auto;min-height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);min-height:44px}
.brand:hover{color:var(--text)}
.brand-mark{width:36px;height:36px;flex:none;border-radius:6px;background:var(--graphite);display:grid;place-items:center}
.brand-name{font-weight:700;font-size:18px;line-height:1.2}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.08em}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 12px;color:var(--text);font-size:15px;font-weight:500}
.nav-links a::after{content:"";position:absolute;left:12px;right:12px;bottom:8px;height:2px;background:var(--amber);transform:scaleX(0);transform-origin:left;transition:transform .2s ease}
.nav-links a:hover::after,.nav-links a.is-current::after{transform:scaleX(1)}
.nav-cta{flex:none}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:6px;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--graphite)}
.site-header.is-stuck .nav-main{position:sticky;top:0;box-shadow:var(--shadow)}
.site-header.hide-top .topbar{height:0;opacity:0}
.drawer{position:fixed;inset:0;background:rgba(23,26,30,.46);opacity:0;visibility:hidden;transition:.2s ease;z-index:1100}
.drawer.open{opacity:1;visibility:visible}
.drawer-panel{position:absolute;top:0;right:0;width:min(86vw,360px);height:100%;background:var(--graphite-2);color:#eef3f1;padding:24px 20px;transform:translateX(100%);transition:transform .25s ease;display:flex;flex-direction:column;gap:18px}
.drawer.open .drawer-panel{transform:none}
.drawer-panel a{color:#eef3f1;min-height:44px;display:flex;align-items:center;border-bottom:1px solid rgba(255,255,255,.08)}
.drawer-close{align-self:flex-end;width:44px;height:44px;border:1px solid rgba(255,255,255,.2);color:#fff;border-radius:6px}
.hero{position:relative;background:var(--graphite);color:#eef3f1;min-height:min(88vh,820px);overflow:hidden}
.hero-track{display:flex;height:min(88vh,820px);transition:transform .55s ease}
.hero-slide{position:relative;min-width:100%;height:100%}
.hero-media{position:absolute;inset:0}
.hero-media img{width:100%;height:100%;object-fit:cover;filter:saturate(.85) contrast(1.05)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(16,19,22,.86) 0%,rgba(16,19,22,.55) 48%,rgba(16,19,22,.22) 100%),linear-gradient(180deg,rgba(16,19,22,.15),rgba(16,19,22,.45))}
.hero-copy{position:relative;z-index:2;width:min(100% - 32px,var(--container));margin:0 auto;height:100%;display:flex;flex-direction:column;justify-content:center;padding:72px 0 96px;max-width:780px;margin-left:max(16px,calc((100% - var(--container))/2))}
.hero-kicker{display:flex;align-items:center;gap:10px;color:var(--arc);font-size:13px;font-weight:600;letter-spacing:.12em;margin-bottom:14px}
.hero h1,.slide-title{font-size:clamp(28px,4.6vw,48px);line-height:1.22;font-weight:700;max-width:18em;margin-bottom:16px}
.hero-lead{font-size:16px;line-height:1.8;color:#d5ddd8;max-width:42em;margin-bottom:22px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px}
.hero-window{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:8px 12px;background:rgba(227,162,26,.12);border:1px solid rgba(227,162,26,.45);color:#f3e0b3;font-size:13px;border-radius:6px;width:fit-content}
.hero-window b{font-family:var(--mono);color:var(--amber);font-size:18px}
.hero-ctrl{position:absolute;left:0;right:0;bottom:22px;z-index:3;width:min(100% - 32px,var(--container));margin:0 auto;display:flex;align-items:flex-end;justify-content:space-between;gap:16px}
.hero-ticks{display:flex;gap:6px;align-items:flex-end}
.tick{width:28px;height:8px;background:rgba(238,243,241,.28);border:0;border-radius:1px;padding:0;min-height:8px}
.tick.is-on{height:18px;background:var(--amber)}
.hero-arrows{display:flex;gap:8px}
.hero-arrows button{width:44px;height:44px;border:1px solid rgba(238,243,241,.3);color:#fff;border-radius:6px;background:rgba(23,26,30,.35)}
.hero-arrows button:hover{border-color:var(--arc);color:var(--arc)}
.section{position:relative;padding:72px 0;border-top:10px solid #e4e6e1}
.section.alt{background:var(--paper)}
.section.gridish{background-image:linear-gradient(rgba(28,33,40,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(28,33,40,.025) 1px,transparent 1px);background-size:48px 48px}
.sec-head{display:grid;grid-template-columns:92px 1fr;gap:16px;align-items:end;margin-bottom:28px}
.sec-num{font-family:var(--mono);font-size:13px;color:var(--arc-dim);letter-spacing:.14em;padding-top:8px;border-top:1px solid var(--line-strong)}
.sec-h2{font-size:clamp(22px,2.4vw,32px);line-height:1.28;font-weight:700}
.sec-lead{grid-column:2;color:var(--muted);font-size:16px;line-height:1.8;max-width:46em;margin-top:8px}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.split-media{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line)}
.split-media img{width:100%;height:100%;object-fit:cover;min-height:420px}
.split-body p{margin-bottom:.9em;color:var(--text)}
.note-line{font-size:13px;color:var(--muted);border-left:2px solid var(--arc);padding-left:10px;margin:16px 0}
.param-row{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:18px}
.param-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px;box-shadow:var(--shadow)}
.param-item span{display:block;font-size:12px;color:var(--muted)}
.param-item b{font-family:var(--mono);font-size:15px;font-weight:600}
.matrix-banner{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:18px 20px;background:var(--graphite-2);color:#eef3f1;border-radius:var(--radius);margin-bottom:16px}
.matrix-banner h3{font-size:18px}
.matrix-banner p{color:#b7c0bb;font-size:14px;max-width:46em}
.matrix-layout{display:grid;grid-template-columns:240px 1fr;gap:16px;align-items:stretch}
.matrix-index{display:flex;flex-direction:column;gap:6px}
.matrix-index button{text-align:left;min-height:48px;padding:10px 12px;border:1px solid var(--line);background:var(--card);border-radius:var(--radius-sm);color:var(--text);font-weight:600}
.matrix-index button:hover,.matrix-index button.is-on{border-color:var(--arc);box-shadow:inset 3px 0 0 var(--arc)}
.panel{display:none;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);min-height:280px}
.panel.is-on{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}
.panel h3{font-size:20px;margin-bottom:8px}
.points{display:flex;flex-direction:column;gap:8px;margin:12px 0 16px}
.points li{padding-left:16px;position:relative;color:var(--text);font-size:16px}
.points li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border:1px solid var(--arc);border-radius:1px}
.meter{height:8px;background:#e6e8e3;border-radius:2px;overflow:hidden}
.meter span{display:block;height:100%;background:linear-gradient(90deg,var(--arc),#7ee0cf);width:var(--w)}
.mini-spec{font-family:var(--mono);font-size:12px;color:var(--muted);margin-top:8px}
.cards-6{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--arc)}
.card h3{font-size:18px;margin-bottom:8px}
.card p,.card li{font-size:15px;color:var(--muted);line-height:1.7}
.card-photo img{width:100%;height:120px;object-fit:cover;border-radius:6px;margin-bottom:12px}
.card-data .big{font-family:var(--mono);font-size:36px;color:var(--arc-deep);line-height:1;font-weight:700}
.card-data .unit{font-size:12px;color:var(--amber-deep);margin-left:4px}
.tag-row{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.tag{font-size:12px;border:1px solid var(--line);padding:2px 8px;border-radius:4px;color:var(--muted)}
.solutions-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:14px;align-items:stretch}
.sol-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .2s ease,border-color .2s ease}
.sol-card:hover{transform:translateY(-3px);border-color:var(--arc)}
.sol-card img{width:100%;object-fit:cover}
.sol-card.tall img{height:280px}
.sol-card.mid img{height:180px}
.sol-card .body{padding:16px 16px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.sol-card h3{font-size:18px}
.sol-card p{color:var(--muted);font-size:15px}
.stats{background:var(--graphite);color:#eef3f1;padding:36px 0;border-top:10px solid #e4e6e1}
.stats-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.stat{border-left:1px solid rgba(255,255,255,.1);padding:8px 12px}
.stat-num{font-family:var(--mono);font-size:34px;font-weight:700;color:var(--arc);line-height:1}
.stat-unit{font-size:12px;color:var(--amber);margin-left:4px}
.stat-name{margin-top:8px;font-size:13px;color:#b7c0bb}
.timeline{display:grid;grid-template-columns:repeat(7,1fr);gap:0;position:relative}
.timeline::before{content:"";position:absolute;left:0;right:0;top:22px;height:1px;background:linear-gradient(90deg,transparent,var(--arc),transparent)}
.step{padding:0 8px 0 0}
.step-num{width:22px;height:22px;border-radius:50%;background:var(--arc);color:#04241f;font-family:var(--mono);font-size:12px;display:grid;place-items:center;position:relative;z-index:1}
.step h3{font-size:15px;margin:12px 0 6px}
.step p{font-size:14px;color:var(--muted);line-height:1.7}
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line-strong);border:1px solid var(--line-strong);border-radius:var(--radius);overflow:hidden}
.scene-col{background:var(--card);min-height:100%}
.scene-col .cover{height:150px;overflow:hidden}
.scene-col img{width:100%;height:150px;object-fit:cover}
.scene-col .pad{padding:14px}
.scene-col h3{font-size:17px;margin-bottom:8px}
.scene-col dl{font-size:14px}
.scene-col dt{color:var(--muted);margin-top:8px}
.scene-col dd{margin:0;color:var(--text)}
.case-wall{background:#14171b;color:#e8eeea;padding:72px 0;border-top:10px solid #e4e6e1}
.case-wall .sec-num{color:var(--arc);border-top-color:#3a4148}
.case-wall .sec-lead{color:#9aa49e}
.case-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;grid-template-rows:210px 150px 180px;gap:10px}
.case-tile{position:relative;overflow:hidden;border-radius:var(--radius);border:1px solid #2c333a;min-height:140px}
.case-tile img{width:100%;height:100%;object-fit:cover;filter:grayscale(.15) contrast(1.05)}
.case-tile .cap{position:absolute;inset:auto 0 0 0;padding:12px 14px;background:linear-gradient(180deg,transparent,rgba(10,12,14,.88))}
.case-tile h3{font-size:16px}
.case-tile p{font-size:13px;color:#c9d3cd}
.case-a{grid-column:1;grid-row:1/3}
.case-b{grid-column:2/4;grid-row:1}
.case-c{grid-column:2;grid-row:2/4}
.case-d{grid-column:3;grid-row:2}
.case-e{grid-column:1;grid-row:3}
.case-f{grid-column:3;grid-row:3}
.stories{display:flex;flex-direction:column;gap:28px}
.story{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center}
.story.reverse{direction:rtl}
.story.reverse > *{direction:ltr}
.story img{width:100%;height:280px;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line)}
.quote{font-size:18px;line-height:1.7;margin-bottom:12px}
.story .meta{font-size:13px;color:var(--muted)}
.reviews{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.review{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.stars{color:var(--amber);letter-spacing:2px;font-size:12px;margin-bottom:8px}
.review p{font-size:15px;color:var(--text);min-height:4.8em}
.review .who{margin-top:10px;font-size:13px;color:var(--muted)}
.news-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:14px}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.news-card time{font-family:var(--mono);font-size:12px;color:var(--arc-dim)}
.news-card h3{font-size:18px;margin:6px 0}
.news-card p{color:var(--muted);font-size:15px}
.news-stack{display:flex;flex-direction:column;gap:10px}
.news-more{margin-top:16px}
.partners{display:flex;flex-direction:column;gap:16px}
.partner-row{display:flex;flex-wrap:wrap;gap:10px}
.partner-item{min-height:44px;padding:8px 14px;border:1px solid var(--line);background:#eef0ec;color:#667078;border-radius:6px;filter:grayscale(1);font-size:14px;display:flex;align-items:center}
.faq-list{display:flex;flex-direction:column;gap:8px}
.faq-item{border:1px solid var(--line);background:var(--card);border-radius:var(--radius)}
.faq-q{width:100%;text-align:left;min-height:52px;padding:12px 16px;display:flex;justify-content:space-between;gap:12px;font-weight:600}
.faq-q i{font-style:normal;color:var(--arc-deep)}
.faq-a{display:none;padding:0 16px 16px;color:var(--muted);font-size:16px}
.faq-item.open .faq-a{display:block}
.close-band{background:#14171b;color:#eef3f1;padding:56px 0 72px;border-top:10px solid #e4e6e1}
.guarantee{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:28px}
.g-item{border:1px solid #2c333a;border-radius:var(--radius-sm);padding:14px;background:#1b2026}
.g-item h3{font-size:16px;margin-bottom:6px;color:var(--arc)}
.g-item p{font-size:14px;color:#b7c0bb}
.consult-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px;background:#1b2026;border:1px solid #2c333a;border-radius:var(--radius);padding:22px}
.consult h3{font-size:22px;margin-bottom:8px}
.consult p,.addr p{color:#b7c0bb}
.form{display:grid;gap:12px}
.form-field{display:flex;flex-direction:column;gap:6px}
.form-field label{font-size:13px;color:#d5ddd8}
.form-field input,.form-field select,.form-field textarea{min-height:44px;border:1px solid #3a424a;background:#12151a;color:#eef3f1;border-radius:6px;padding:8px 10px}
.form-field textarea{min-height:96px;resize:vertical}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:var(--arc);box-shadow:0 0 0 3px rgba(18,196,168,.2)}
.form-field.error input,.form-field.error select{border-color:var(--amber)}
.form-msg{min-height:24px;font-size:14px}
.form-msg.ok{color:var(--arc)}
.form-msg.err{color:var(--amber)}
.form .btn{width:auto}
.addr a{color:#eef3f1}
.site-footer{background:var(--graphite);color:#b7c0bb;padding:40px 0 24px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1.1fr;gap:24px;margin-bottom:24px}
.footer-brand strong{display:block;color:#fff;font-size:18px;margin-bottom:8px}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 14px}
.footer-links a{color:#c9d3cd;min-height:44px;display:inline-flex;align-items:center}
.footer-links a:hover{color:var(--arc)}
.footer-contact p{margin:0 0 6px}
.footer-contact a{color:#eef3f1}
.copy{border-top:1px solid #2c333a;padding-top:16px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:#8b939c}
@media (max-width:1280px){
  .stats-grid{grid-template-columns:repeat(3,1fr)}
  .timeline{grid-template-columns:repeat(4,1fr);gap:18px 8px}
  .timeline::before{display:none}
}
@media (max-width:1024px){
  .nav-links{display:none}
  .menu-toggle{display:flex}
  .split,.matrix-layout,.panel.is-on,.solutions-grid,.story,.story.reverse,.news-layout,.consult-grid,.footer-grid,.sec-head{grid-template-columns:1fr;direction:ltr}
  .sec-lead{grid-column:1}
  .cards-6,.reviews{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:1fr 1fr;grid-template-rows:auto}
  .case-a,.case-b,.case-c,.case-d,.case-e,.case-f{grid-column:auto;grid-row:auto;min-height:220px}
  .hero-copy{max-width:640px}
  .split-media img,.story img{min-height:280px;height:280px}
  .param-row{grid-template-columns:1fr}
}
@media (max-width:768px){
  body{font-size:16px}
  .topbar-right .marks{display:none}
  .topbar-left .hours-text{display:none}
  .hero,.hero-track,.hero-slide{min-height:72vh;height:72vh}
  .cards-6,.reviews,.guarantee,.stats-grid{grid-template-columns:1fr 1fr}
  .solutions-grid,.timeline{grid-template-columns:1fr}
  .matrix-banner{flex-direction:column;align-items:flex-start}
  .form .btn{width:100%}
  .copy{flex-direction:column}
  .footer-contact{order:-1}
}
@media (max-width:520px){
  .container{width:min(100% - 24px,var(--container))}
  .cards-6,.reviews,.guarantee,.stats-grid,.scene-grid,.case-grid{grid-template-columns:1fr}
  .hero h1,.slide-title{font-size:28px}
  .hero-actions .btn{width:100%}
  .hero-window{width:100%}
  .topbar-inner{gap:8px}
  .hotline{font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero-track,.btn,.card,.sol-card{transition:none}
}