/* roulang page: index */
:root{
  --c-primary:#1F8A70;
  --c-primary-deep:#166953;
  --c-primary-bright:#2BBBAD;
  --c-primary-soft:#D7F1EA;
  --c-accent:#C48A12;
  --c-accent-soft:#F4E4B8;
  --c-ink:#1C2321;
  --c-ink-2:#2C3532;
  --c-muted:#5C6B66;
  --c-mist:#E7EEE9;
  --c-sand:#F3F0E8;
  --c-card:#FFFDFB;
  --c-line:#C9D4CE;
  --c-line-2:#B7C5BE;
  --c-dark:#1C2321;
  --c-dark-2:#141918;
  --c-on-dark:#E8F3EE;
  --c-on-dark-muted:#A7B8B2;
  --radius:10px;
  --radius-sm:8px;
  --shadow:0 1px 0 rgba(28,35,33,.06),0 10px 28px rgba(28,35,33,.05);
  --shadow-tight:0 1px 0 rgba(28,35,33,.08);
  --container:1220px;
  --gutter:24px;
  --tool-h:40px;
  --nav-h:64px;
  --focus:0 0 0 2px #F3F0E8,0 0 0 4px #1F8A70;
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --space-1:8px;
  --space-2:12px;
  --space-3:16px;
  --space-4:24px;
  --space-5:40px;
  --space-6:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;max-width:100%;background:var(--c-sand)}
html,body{margin:0;padding:0;overflow-x:hidden}
body{font-family:var(--font);color:var(--c-ink);background:var(--c-sand);line-height:1.7;font-weight:400;font-size:16px;min-height:100vh}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration-color:var(--c-primary-bright);text-underline-offset:3px;transition:color .2s,text-decoration-color .2s}
a:hover{color:var(--c-primary-deep)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
button,input,select,textarea{font-family:inherit}
button{cursor:pointer}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0 0 .6em;line-height:1.28;font-weight:700;letter-spacing:.01em;color:var(--c-ink)}
ul,ol{margin:0;padding:0}
.skip{position:absolute;left:12px;top:-48px;background:var(--c-primary);color:#fff;padding:8px 12px;z-index:80;border-radius:6px}
.skip:focus{top:12px}
.container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.muted{color:var(--c-muted)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;color:var(--c-primary-deep);letter-spacing:.08em;text-transform:none;margin-bottom:10px}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--c-primary-bright)}
.lead{font-size:15px;color:var(--c-muted);max-width:68ch;margin-bottom:0}
.sec-head{margin-bottom:28px}
.sec-head h2{font-size:28px;font-weight:700}
.sec-head p{color:var(--c-muted);font-size:15px;max-width:72ch;margin:0}
.band{padding:72px 0;position:relative}
.band-sand{background:var(--c-sand)}
.band-mist{background:var(--c-mist)}
.band-card{background:var(--c-card)}
.band-dark{background:linear-gradient(180deg,#1C2321 0%,#151B19 100%);color:var(--c-on-dark)}
.band-dark h2,.band-dark h3{color:#F4FBF8}
.band-compact{padding:52px 0}
.grid-bg{background-image:linear-gradient(rgba(31,138,112,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(31,138,112,.06) 1px,transparent 1px);background-size:28px 28px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;border-radius:8px;border:1px solid transparent;font-size:14px;font-weight:600;text-decoration:none;line-height:1;transition:background .2s,border-color .2s,color .2s,transform .15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.btn-primary:hover{background:var(--c-primary-deep);border-color:var(--c-accent);color:#fff}
.btn-ghost{background:transparent;color:var(--c-ink);border-color:var(--c-ink)}
.btn-ghost:hover{background:var(--c-ink);color:#fff}
.btn-bright{background:var(--c-primary-bright);color:#12332C;border-color:var(--c-primary-bright)}
.btn-bright:hover{background:#5FD0C5;border-color:var(--c-accent);color:#12332C}
.btn-line{background:transparent;color:var(--c-on-dark);border-color:#6E837C}
.btn-line:hover{border-color:var(--c-accent);color:#fff}
.btn-mini{min-height:32px;padding:0 12px;font-size:12px;background:var(--c-primary);color:#fff;border-radius:6px}
.btn-mini:hover{background:var(--c-primary-deep);border-color:var(--c-accent);color:#fff}
.btn-text{background:none;border:none;color:var(--c-primary);padding:0;min-height:auto;text-decoration:underline;text-decoration-color:var(--c-primary-bright);text-underline-offset:3px;font-weight:600}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 8px;border-radius:4px;font-size:12px;font-weight:600;background:var(--c-primary-soft);color:var(--c-primary-deep);letter-spacing:.02em}
.tag-amber{background:var(--c-accent-soft);color:#7A5608}
.tag-dark{background:#2A3330;color:#D5EDE6}
.badge{display:inline-flex;flex-direction:column;gap:2px;min-width:120px;padding:10px 12px;border:1px solid var(--c-line);border-radius:8px;background:var(--c-card)}
.badge b{font-size:14px;color:var(--c-ink)}
.badge span{font-size:12px;color:var(--c-muted)}
.card{background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--radius);box-shadow:var(--shadow-tight);transition:transform .2s,border-color .2s}
.card:hover{transform:translateY(-3px);border-color:var(--c-primary)}
.site-header{position:relative;z-index:50}
.toolbar{height:var(--tool-h);background:#1C2321;color:#C9D8D3;font-size:12px}
.toolbar .container{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.toolbar-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.toolbar a{color:#E7F4EF;text-decoration:none}
.toolbar a:hover{color:var(--c-primary-bright)}
.nav-main{height:var(--nav-h);background:rgba(243,240,232,.94);border-bottom:1px solid var(--c-line);backdrop-filter:saturate(1.1)}
.nav-main .container{height:100%;display:flex;align-items:center;gap:20px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--c-ink);min-width:220px}
.logo-mark{width:36px;height:36px;flex:0 0 36px}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:14px;font-weight:700}
.logo-text small{font-size:11px;color:var(--c-muted);font-weight:500}
.nav-links{display:flex;align-items:center;gap:4px;flex:1;justify-content:center}
.nav-links a{position:relative;color:var(--c-ink-2);text-decoration:none;font-size:14px;font-weight:500;padding:10px 10px;min-height:44px;display:inline-flex;align-items:center}
.nav-links a:hover{color:var(--c-primary)}
.nav-links a.is-active{color:var(--c-primary-deep)}
.nav-links a.is-active::after{content:"";position:absolute;left:10px;right:10px;bottom:6px;height:3px;background:var(--c-primary);border-radius:2px}
.nav-cta{margin-left:auto}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:8px;background:var(--c-card)}
.menu-toggle span,.menu-toggle span::before,.menu-toggle span::after{display:block;width:18px;height:2px;background:var(--c-ink);margin:0 auto;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
.drawer-overlay{position:fixed;inset:0;background:rgba(20,25,24,.46);opacity:0;pointer-events:none;transition:opacity .2s;z-index:60}
.drawer-overlay.is-open{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);background:var(--c-card);z-index:70;transform:translateX(100%);transition:transform .24s ease;padding:24px 20px;display:flex;flex-direction:column;gap:8px;box-shadow:-12px 0 32px rgba(0,0,0,.12)}
.drawer.is-open{transform:none}
.drawer a{color:var(--c-ink);text-decoration:none;min-height:48px;display:flex;align-items:center;padding:0 12px;border-radius:8px;font-weight:600}
.drawer a:hover,.drawer a.is-active{background:var(--c-primary-soft);color:var(--c-primary-deep)}
.drawer-close{align-self:flex-end;width:44px;height:44px;border:1px solid var(--c-line);border-radius:8px;background:#fff}
.header-spacer{height:0}
.site-header.is-stuck .nav-main{position:fixed;top:0;left:0;right:0;box-shadow:0 8px 24px rgba(28,35,33,.08)}
.site-header.is-stuck .toolbar{display:none}
.site-header.is-stuck + .header-spacer{height:var(--nav-h)}
.hero{position:relative;min-height:86vh;background:#121816;color:#F4FBF8}
.hero-slider{position:relative;min-height:86vh;overflow:hidden}
.slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .5s ease;display:flex;align-items:stretch}
.slide.is-active{opacity:1;visibility:visible;z-index:1}
.slide-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:saturate(.85) contrast(1.05)}
.slide-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(16,22,20,.82) 0%,rgba(16,22,20,.55) 48%,rgba(16,22,20,.28) 100%),linear-gradient(180deg,rgba(16,22,20,.15),rgba(16,22,20,.45))}
.slide-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(43,187,173,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(43,187,173,.08) 1px,transparent 1px);background-size:40px 40px;mix-blend-mode:screen;opacity:.35;pointer-events:none}
.slide-inner{position:relative;z-index:2;width:min(var(--container),calc(100% - 40px));margin:0 auto;display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center;padding:110px 0 88px}
.hero-copy .pain{display:inline-block;font-size:13px;color:#F4E4B8;background:rgba(196,138,18,.16);border:1px solid rgba(196,138,18,.45);padding:6px 10px;border-radius:4px;margin-bottom:14px}
.hero h1,.slide-title{font-size:40px;line-height:1.22;color:#F7FFFB;font-weight:700;max-width:18ch;margin-bottom:14px}
.hero-lead{font-size:16px;line-height:1.8;color:#D5E6E0;max-width:46ch;margin-bottom:22px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.demo{background:rgba(20,25,24,.72);border:1px solid rgba(43,187,173,.35);border-radius:12px;padding:16px;box-shadow:inset 0 1px 0 rgba(255,255,255,.06)}
.demo-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;font-size:12px;color:#A7B8B2}
.demo-head b{color:#E8F3EE;font-size:13px}
.demo-metrics{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px}
.metric{border:1px solid rgba(201,212,206,.18);border-radius:8px;padding:10px}
.metric span{display:block;font-size:12px;color:#A7B8B2}
.metric strong{display:block;font-size:20px;color:#7EE0D2;font-variant-numeric:tabular-nums}
.bars{display:flex;align-items:flex-end;gap:6px;height:72px;margin:8px 0 12px}
.bars i{display:block;flex:1;background:linear-gradient(180deg,#2BBBAD,#1F8A70);border-radius:3px 3px 0 0;opacity:.9}
.curve{width:100%;height:54px}
.hero-ctrl{position:absolute;z-index:3;left:0;right:0;bottom:22px;display:flex;justify-content:center;align-items:center;gap:14px}
.hero-arrow,.hero-pause,.dot{width:44px;height:44px;border-radius:8px;border:1px solid rgba(255,255,255,.28);background:rgba(20,25,24,.45);color:#fff}
.hero-pause{font-size:12px;width:auto;padding:0 12px}
.dots{display:flex;gap:8px}
.dot{width:12px;height:12px;min-width:12px;padding:0;border-radius:50%;background:rgba(255,255,255,.35)}
.dot.is-on{background:var(--c-primary-bright);border-color:var(--c-primary-bright)}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center}
.split.rev{grid-template-columns:.95fr 1.05fr}
.frame{border-radius:12px;overflow:hidden;border:1px solid var(--c-line);background:#DDE6E1;position:relative}
.frame img{width:100%;height:100%;object-fit:cover;min-height:360px}
.spec-row{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}
.check-list{list-style:none;margin:16px 0 0;display:grid;gap:8px}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--c-ink-2)}
.check-list li::before{content:"";width:10px;height:10px;margin-top:7px;border-radius:2px;background:var(--c-primary-bright);flex:0 0 10px}
.comply{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.comply span{font-size:12px;border:1px solid var(--c-line);background:#fff;padding:8px 10px;border-radius:6px;color:var(--c-ink-2)}
.matrix{display:grid;grid-template-columns:repeat(4,1fr) 280px;grid-template-areas:"w1 w1 w2 w2 dash" "n1 n2 n3 n4 dash";gap:18px}
.m-wide:nth-child(1){grid-area:w1}
.m-wide:nth-child(2){grid-area:w2}
.m-narrow:nth-child(3){grid-area:n1}
.m-narrow:nth-child(4){grid-area:n2}
.m-narrow:nth-child(5){grid-area:n3}
.m-narrow:nth-child(6){grid-area:n4}
.dash-card{grid-area:dash}
.m-wide,.m-narrow,.dash-card{padding:18px}
.m-wide h3,.m-narrow h3{font-size:18px;margin-bottom:8px}
.m-wide p,.m-narrow p,.dash-card p{font-size:14px;color:var(--c-muted);margin:0}
.ico{width:28px;height:28px;margin-bottom:10px;color:var(--c-primary)}
.dash-card{background:var(--c-ink);color:var(--c-on-dark);border-color:#2C3935}
.dash-card:hover{border-color:var(--c-primary-bright);transform:none}
.dash-card h3{color:#fff}
.dash-row{display:flex;justify-content:space-between;font-size:13px;padding:8px 0;border-bottom:1px solid #2E3B37;font-variant-numeric:tabular-nums}
.mini-bars{display:flex;align-items:flex-end;gap:5px;height:86px;margin-top:12px}
.mini-bars b{flex:1;background:var(--c-primary-bright);border-radius:2px 2px 0 0;display:block}
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.adv{padding:20px 18px 18px 22px;border-left:4px solid var(--c-primary);position:relative}
.adv h3{font-size:17px}
.adv p{font-size:14px;color:var(--c-muted);margin:0}
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.prod img{width:100%;height:190px;object-fit:cover}
.prod-body{padding:16px 16px 18px}
.prod h3{font-size:18px;margin:8px 0}
.params{list-style:none;margin:8px 0 14px}
.params li{font-size:13px;color:var(--c-muted);padding:4px 0 4px 14px;position:relative}
.params li::before{content:"";width:6px;height:6px;border-radius:1px;background:var(--c-primary-bright);position:absolute;left:0;top:11px}
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}
.timeline::before{content:"";position:absolute;left:8%;right:8%;top:27px;height:2px;background:linear-gradient(90deg,var(--c-primary),var(--c-primary-bright))}
.step{padding:0 12px}
.step-no{width:54px;height:54px;border-radius:8px;background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:12px;position:relative;z-index:1;border:2px solid var(--c-sand)}
.step h3{font-size:16px}
.step p{font-size:13px;color:var(--c-muted);margin:0}
.dark-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}
.idea-list{list-style:none;display:grid;gap:12px;margin-top:16px}
.idea-list li{border:1px solid #33413D;border-radius:8px;padding:12px 14px;background:rgba(255,255,255,.02);box-shadow:inset 0 1px 0 rgba(255,255,255,.04)}
.idea-list b{display:block;color:#7EE0D2;font-size:14px}
.idea-list span{font-size:13px;color:#B7C7C1}
.wave{position:absolute;right:0;bottom:0;width:48%;height:120px;opacity:.25;pointer-events:none}
.case-slice{background:#151B19;border:1px solid #33413D;border-radius:12px;overflow:hidden}
.case-slice img{height:180px;width:100%;object-fit:cover}
.case-slice-body{padding:16px}
.kpi{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}
.kpi div{background:#1E2825;padding:10px;border-radius:8px}
.kpi span{display:block;font-size:12px;color:#A7B8B2}
.kpi strong{font-size:20px;color:#F0C453;font-variant-numeric:tabular-nums}
.case-wall{display:grid;grid-template-columns:1.45fr 1fr 1fr;grid-template-rows:210px 210px;gap:14px}
.case-tile{position:relative;overflow:hidden;border-radius:10px;border:1px solid var(--c-line);cursor:pointer;background:#111}
.case-tile img{width:100%;height:100%;object-fit:cover;min-height:160px;transition:transform .35s}
.case-tile:hover img{transform:scale(1.04)}
.case-tile:first-child{grid-row:1 / 3}
.case-cap{position:absolute;left:0;right:0;bottom:0;padding:12px 14px;background:linear-gradient(180deg,transparent,rgba(16,22,20,.88));color:#fff}
.case-cap h3{color:#fff;font-size:16px;margin:0 0 4px}
.case-cap p{margin:0;font-size:12px;color:#D5E6E0}
.case-panel{margin-top:16px;display:none;border:1px solid var(--c-line);background:var(--c-card);border-radius:10px;padding:16px 18px}
.case-panel.is-open{display:block}
.story{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center;margin-bottom:36px}
.story:last-child{margin-bottom:0}
.story.alt{direction:rtl}
.story.alt > *{direction:ltr}
.story img{width:100%;height:280px;object-fit:cover;border-radius:10px;border:1px solid var(--c-line)}
.quote{font-size:16px;line-height:1.85;margin-bottom:10px}
.who{font-size:13px;color:var(--c-muted)}
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.stat{text-align:left;padding:8px 8px 8px 0;border-left:3px solid var(--c-primary-bright);padding-left:14px}
.stat b{display:block;font-size:32px;line-height:1.1;color:var(--c-primary);font-variant-numeric:tabular-nums}
.stat span{font-size:13px;color:var(--c-muted)}
.rev-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.rev{padding:18px;position:relative}
.rev::before{content:"“";position:absolute;right:14px;top:6px;font-size:42px;color:var(--c-primary-soft);line-height:1}
.rev p{font-size:14px;min-height:6.2em}
.score{height:6px;background:var(--c-mist);border-radius:99px;overflow:hidden;margin:10px 0}
.score i{display:block;height:100%;background:var(--c-primary)}
.rev .who{display:block}
.news-list{display:grid;gap:0;border-top:1px solid var(--c-line)}
.news-item{display:grid;grid-template-columns:108px 1fr auto;gap:16px;align-items:center;padding:16px 4px;border-bottom:1px solid var(--c-line);text-decoration:none;color:inherit}
.news-item time{font-variant-numeric:tabular-nums;color:var(--c-muted);font-size:13px}
.news-item h3{font-size:16px;margin:0 0 4px}
.news-item p{margin:0;font-size:13px;color:var(--c-muted)}
.news-item:hover h3{color:var(--c-primary)}
.logo-wall{display:grid;grid-template-columns:repeat(8,1fr);gap:10px}
.plaque{height:64px;display:flex;align-items:center;justify-content:center;border:1px solid var(--c-line);border-radius:8px;background:#EEF3F0;color:#6A7873;font-size:12px;font-weight:600;filter:grayscale(.25)}
.faq-list{display:grid;gap:8px}
.faq-item{border:1px solid var(--c-line);border-radius:10px;background:var(--c-card);overflow:hidden}
.faq-item button{width:100%;min-height:48px;text-align:left;background:transparent;border:0;padding:12px 48px 12px 16px;font-size:15px;font-weight:600;color:var(--c-ink);position:relative}
.faq-item button::after{content:"";position:absolute;right:18px;top:50%;width:10px;height:10px;border-right:2px solid var(--c-primary);border-bottom:2px solid var(--c-primary);transform:translateY(-70%) rotate(45deg);transition:transform .2s}
.faq-item.is-open button::after{transform:translateY(-30%) rotate(225deg)}
.faq-item .faq-a{display:none;padding:0 16px 16px;color:var(--c-muted);font-size:14px}
.faq-item.is-open .faq-a{display:block}
.guard{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.guard-item{padding:16px;background:var(--c-card);border:1px solid var(--c-line);border-radius:10px}
.guard-item h3{font-size:16px}
.guard-item p{font-size:13px;color:var(--c-muted);margin:0}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px;align-items:start}
.contact-card{background:var(--c-card);border:1px solid var(--c-line);border-radius:12px;padding:22px}
.contact-kv{display:grid;gap:10px;margin-top:16px}
.contact-kv div{display:flex;gap:10px;font-size:14px}
.contact-kv b{min-width:64px;color:var(--c-muted);font-weight:500}
form{display:grid;gap:12px}
label{display:grid;gap:6px;font-size:13px;font-weight:600;color:var(--c-ink-2)}
input,select,textarea{min-height:44px;border:1px solid #C9D4CE;border-radius:8px;padding:0 12px;background:#fff;color:var(--c-ink);font-size:14px}
textarea{min-height:110px;padding:10px 12px;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,138,112,.15);outline:none}
.form-msg{padding:10px 12px;border-radius:8px;font-size:14px}
.form-msg.ok{background:#D7F1EA;color:#166953}
.form-msg.err{background:#F8E7C7;color:#7A5608}
.err-txt{color:#A15C12;font-size:12px;font-weight:400}
.site-footer{background:#141918;color:#C5D4CE;padding:48px 0 20px;border-top:1px solid #2A3330}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.1fr;gap:24px;margin-bottom:28px}
.site-footer h3,.site-footer .foot-brand{color:#F2FAF6;font-size:16px;margin-bottom:10px}
.site-footer a{color:#D5E6E0;text-decoration:none}
.site-footer a:hover{color:var(--c-primary-bright)}
.foot-links{list-style:none;display:grid;gap:8px;font-size:14px}
.foot-copy{border-top:1px solid #2A3330;padding-top:14px;font-size:12px;color:#8FA09A;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
@media (max-width:1280px){
  .case-wall{grid-template-columns:1.3fr 1fr 1fr}
  .logo-wall{grid-template-columns:repeat(4,1fr)}
}
@media (max-width:1024px){
  .nav-links,.nav-cta{display:none}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center;margin-left:auto}
  .logo{min-width:auto}
  .slide-inner,.split,.split.rev,.dark-grid,.contact-grid,.story,.story.alt{grid-template-columns:1fr;direction:ltr}
  .hero h1,.slide-title{font-size:32px}
  .hero{min-height:72vh}
  .hero-slider{min-height:72vh}
  .matrix{grid-template-columns:1fr 1fr;grid-template-areas:"w1 w2" "n1 n2" "n3 n4" "dash dash"}
  .adv-grid,.prod-grid,.rev-grid,.guard{grid-template-columns:1fr 1fr}
  .timeline{grid-template-columns:1fr 1fr;gap:18px}
  .timeline::before{display:none}
  .stats{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .frame img,.story img{min-height:240px;height:240px}
}
@media (max-width:768px){
  .toolbar{display:none}
  .nav-main{position:sticky;top:0}
  .container{width:calc(100% - 32px)}
  .band{padding:52px 0}
  .sec-head h2{font-size:24px}
  .adv-grid,.prod-grid,.rev-grid,.guard,.stats,.logo-wall{grid-template-columns:1fr 1fr}
  .case-wall{grid-template-columns:1fr 1fr;grid-template-rows:none}
  .case-tile:first-child{grid-row:auto;min-height:220px}
  .news-item{grid-template-columns:1fr;gap:6px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn{width:100%}
  .toolbar .btn-mini{width:auto}
}
@media (max-width:520px){
  .adv-grid,.prod-grid,.rev-grid,.guard,.stats,.logo-wall,.matrix,.timeline,.case-wall{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .hero{min-height:68vh}
  .hero-slider{min-height:68vh}
  .hero h1,.slide-title{font-size:28px;max-width:none}
  .slide-inner{padding:88px 0 96px}
  .demo-metrics{grid-template-columns:1fr}
  .plaque{height:52px}
  .foot-copy{flex-direction:column}
}
@media (max-width:375px){
  .container{width:calc(100% - 28px)}
  .hero,.hero-slider{min-height:64vh}
  .logo-text strong{font-size:13px}
  body{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none !important;transition:none !important}
}

/* roulang page: index */
:root {
      --c-primary: #1B7A63;
      --c-primary-deep: #146352;
      --c-accent: #27C4B0;
      --c-warn: #D3921A;
      --c-alert: #C45C4A;
      --c-ink: #161C1A;
      --c-ink-soft: #3A4541;
      --c-muted: #6B756F;
      --c-bg: #F3F6F4;
      --c-bg-alt: #E7EEEA;
      --c-card: #FFFFFF;
      --c-dark: #121816;
      --c-dark-2: #1A2320;
      --c-line: #D5DDD8;
      --c-topbar: #0E1412;
      --c-nav: #E8EEEA;
      --radius: 6px;
      --shadow: 0 8px 24px rgba(22, 28, 26, .06);
      --shadow-hover: 0 12px 28px rgba(22, 28, 26, .10);
      --container: 1220px;
      --nav-h: 72px;
      --font: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --space-section: 96px;
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: var(--font);
      font-size: 16px;
      line-height: 1.75;
      color: var(--c-ink);
      background: var(--c-bg);
      overflow-x: hidden;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--c-primary); text-decoration: none; }
    a:hover { color: var(--c-primary-deep); }
    button, input, select, textarea { font-family: inherit; font-size: 16px; }
    button { cursor: pointer; }
    h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
    ul, ol { padding: 0; list-style: none; }
    table { border-collapse: collapse; width: 100%; }
    :focus-visible {
      outline: 2px solid var(--c-accent);
      outline-offset: 3px;
    }
    .skip {
      position: absolute;
      left: -999px;
      top: 8px;
      background: var(--c-primary);
      color: #fff;
      padding: 8px 14px;
      z-index: 100;
    }
    .skip:focus { left: 12px; }
    .container {
      width: min(100% - 48px, var(--container));
      margin: 0 auto;
    }
    .topbar {
      background: var(--c-topbar);
      color: #C9D4CE;
      font-size: 12.5px;
      letter-spacing: .02em;
    }
    .topbar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      min-height: 36px;
      gap: 16px;
    }
    .topbar-left, .topbar-right {
      display: flex;
      align-items: center;
      gap: 18px;
      flex-wrap: wrap;
    }
    .topbar a { color: #E7F3EE; }
    .topbar a:hover { color: var(--c-accent); }
    .topbar .consult-link {
      color: var(--c-accent);
      border-bottom: 1px solid rgba(39, 196, 176, .4);
      padding-bottom: 1px;
    }
    .nav-wrap {
      position: sticky;
      top: 0;
      z-index: 50;
      background: var(--c-nav);
      border-bottom: 1px solid var(--c-line);
      box-shadow: 0 4px 16px rgba(22, 28, 26, .04);
    }
    .mainnav {
      display: flex;
      align-items: center;
      min-height: var(--nav-h);
      gap: 24px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--c-ink);
      flex-shrink: 0;
    }
    .logo-mark {
      width: 36px;
      height: 36px;
      border: 1px solid var(--c-primary);
      border-radius: 4px;
      display: grid;
      place-items: center;
      color: var(--c-primary);
      background:
        linear-gradient(180deg, rgba(27, 122, 99, .12), transparent 62%),
        repeating-linear-gradient(90deg, rgba(27, 122, 99, .18) 0 1px, transparent 1px 7px);
    }
    .logo-text { display: flex; flex-direction: column; line-height: 1.15; }
    .logo-text strong { font-size: 16px; font-weight: 700; letter-spacing: .08em; }
    .logo-text span { font-size: 11px; color: var(--c-muted); margin-top: 3px; letter-spacing: .04em; }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 4px 18px;
      margin-left: auto;
      flex-wrap: wrap;
      justify-content: flex-end;
    }
    .nav-links a {
      color: var(--c-ink-soft);
      font-size: 14px;
      padding: 8px 2px;
      position: relative;
    }
    .nav-links a:hover { color: var(--c-primary); }
    .nav-links a.is-active {
      color: var(--c-primary);
      font-weight: 600;
    }
    .nav-links a.is-active::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: 2px;
      height: 2px;
      background: var(--c-primary);
    }
    .nav-cta { flex-shrink: 0; }
    .nav-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border: 1px solid var(--c-line);
      background: #fff;
      border-radius: 4px;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 5px;
    }
    .nav-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      background: var(--c-ink);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 10px 20px;
      border-radius: 4px;
      border: 1px solid transparent;
      letter-spacing: .12em;
      font-weight: 600;
      font-size: 14px;
      transition: transform .2s ease, background .2s ease, border-color .2s ease, color .2s ease, box-shadow .2s ease;
    }
    .btn:hover { transform: translateY(-2px); }
    .btn:active { transform: translateY(0); }
    .btn-primary {
      background: var(--c-primary);
      color: #fff;
    }
    .btn-primary:hover { background: var(--c-primary-deep); color: #fff; }
    .btn-ghost {
      background: transparent;
      color: #E8F7F3;
      border-color: var(--c-accent);
    }
    .btn-ghost:hover { background: rgba(39, 196, 176, .12); color: #fff; }
    .btn-line {
      background: #fff;
      color: var(--c-primary);
      border-color: var(--c-primary);
    }
    .btn-line:hover { background: var(--c-primary); color: #fff; }
    .drawer {
      position: fixed;
      inset: 0;
      z-index: 80;
      pointer-events: none;
      visibility: hidden;
    }
    .drawer.is-open { pointer-events: auto; visibility: visible; }
    .drawer-mask {
      position: absolute;
      inset: 0;
      background: rgba(18, 24, 22, .46);
      opacity: 0;
      transition: opacity .2s ease;
    }
    .drawer.is-open .drawer-mask { opacity: 1; }
    .drawer-panel {
      position: absolute;
      top: 0;
      right: 0;
      width: min(86vw, 360px);
      height: 100%;
      background: #F7FAF8;
      padding: 28px 22px;
      transform: translateX(100%);
      transition: transform .24s ease;
      overflow: auto;
      border-left: 1px solid var(--c-line);
    }
    .drawer.is-open .drawer-panel { transform: translateX(0); }
    .drawer-panel a {
      display: flex;
      align-items: center;
      min-height: 44px;
      color: var(--c-ink);
      border-bottom: 1px solid var(--c-line);
      padding: 0 8px;
      position: relative;
    }
    .drawer-panel a.is-active::before {
      content: "";
      position: absolute;
      left: 0;
      top: 10px;
      bottom: 10px;
      width: 3px;
      background: var(--c-primary);
    }
    .drawer-close {
      width: 44px;
      height: 44px;
      border: 1px solid var(--c-line);
      background: #fff;
      border-radius: 4px;
      margin-bottom: 18px;
    }
    .hero {
      position: relative;
      min-height: 640px;
      background: var(--c-dark);
      color: #F4F8F6;
      overflow: hidden;
    }
    .hero-track { position: relative; min-height: 640px; }
    .slide {
      position: absolute;
      inset: 0;
      opacity: 0;
      visibility: hidden;
      transition: opacity .5s ease;
    }
    .slide.is-active {
      opacity: 1;
      visibility: visible;
      position: relative;
    }
    .slide > img {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .slide-mask {
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(14, 20, 18, .88) 0%, rgba(14, 20, 18, .62) 48%, rgba(14, 20, 18, .18) 100%);
    }
    .slide-inner {
      position: relative;
      z-index: 2;
      min-height: 640px;
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 40px;
      align-items: center;
      padding: 56px 0 72px;
    }
    .brand-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--c-accent);
      font-size: 13px;
      letter-spacing: .16em;
      text-transform: none;
      margin-bottom: 16px;
    }
    .brand-kicker::before {
      content: "";
      width: 18px;
      height: 2px;
      background: var(--c-accent);
    }
    .hero h1, .slide h2.hero-title {
      font-size: 44px;
      line-height: 1.22;
      font-weight: 700;
      letter-spacing: .04em;
      max-width: 16em;
    }
    .hero-lead {
      margin-top: 18px;
      color: #D5E2DC;
      max-width: 38em;
    }
    .hero-sub {
      margin-top: 14px;
      color: #B7C7C0;
      max-width: 36em;
      font-size: 15px;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .demo-panel {
      background: rgba(18, 24, 22, .72);
      border: 1px solid rgba(39, 196, 176, .28);
      border-radius: 8px;
      padding: 20px;
      box-shadow: 0 12px 32px rgba(0, 0, 0, .22);
    }
    .demo-head {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      margin-bottom: 14px;
      color: #9FB2AB;
      font-size: 12px;
      letter-spacing: .12em;
    }
    .demo-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-bottom: 16px;
    }
    .demo-kpi {
      background: rgba(255, 255, 255, .04);
      border: 1px solid rgba(213, 221, 216, .12);
      padding: 12px 10px;
      border-radius: 4px;
    }
    .demo-kpi b {
      display: block;
      font-size: 22px;
      font-variant-numeric: tabular-nums;
      letter-spacing: .02em;
      color: #F4F8F6;
    }
    .demo-kpi span { color: #8FA39B; font-size: 12px; }
    .curve {
      width: 100%;
      height: 92px;
      display: block;
    }
    .hero-ctrl {
      position: absolute;
      left: 0;
      right: 0;
      bottom: 22px;
      z-index: 3;
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: min(100% - 48px, var(--container));
      margin: 0 auto;
    }
    .hero-dots { display: flex; gap: 8px; }
    .hero-dots button {
      width: 28px;
      height: 3px;
      border: 0;
      background: rgba(255, 255, 255, .32);
      padding: 0;
      min-height: 12px;
      background-clip: content-box;
      padding-top: 4px;
      padding-bottom: 5px;
    }
    .hero-dots button.is-active { background-color: var(--c-accent); width: 40px; }
    .hero-arrows { display: flex; gap: 8px; }
    .hero-arrows button {
      width: 44px;
      height: 44px;
      border: 1px solid rgba(255, 255, 255, .28);
      background: rgba(18, 24, 22, .35);
      color: #fff;
      border-radius: 4px;
    }
    .hero-arrows button:hover { border-color: var(--c-accent); color: var(--c-accent); }
    .chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
    .chip {
      border: 1px solid rgba(39, 196, 176, .35);
      color: #D8F4EF;
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 4px;
      letter-spacing: .04em;
    }
    main { display: block; }
    .section {
      padding: var(--space-section) 0;
      position: relative;
    }
    .section h2 {
      font-size: 30px;
      line-height: 1.3;
      letter-spacing: .04em;
      max-width: 18em;
    }
    .lead {
      margin-top: 14px;
      color: var(--c-ink-soft);
      max-width: 46em;
    }
    .section-head { margin-bottom: 36px; }
    .bg-white { background: var(--c-card); }
    .bg-fog { background: var(--c-bg); }
    .bg-alt { background: var(--c-bg-alt); }
    .intro-grid {
      display: grid;
      grid-template-columns: .92fr 1.08fr;
      gap: 48px;
      align-items: center;
    }
    .cover-frame {
      position: relative;
      border: 1px solid var(--c-line);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
    }
    .cover-frame img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      aspect-ratio: 4 / 3;
    }
    .cover-frame::after {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(90deg, rgba(27, 122, 99, .08) 0 1px, transparent 1px),
        linear-gradient(0deg, rgba(27, 122, 99, .08) 0 1px, transparent 1px);
      background-size: 28px 28px;
      pointer-events: none;
      opacity: .45;
    }
    .intro-copy p + p { margin-top: 14px; color: var(--c-ink-soft); }
    .badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 22px; }
    .badge {
      background: var(--c-bg-alt);
      color: var(--c-primary-deep);
      border: 1px solid var(--c-line);
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 4px;
      letter-spacing: .04em;
    }
    .spec-table {
      border: 1px solid var(--c-line);
      background: #fff;
    }
    .spec-table th, .spec-table td {
      text-align: left;
      padding: 10px 14px;
      border-bottom: 1px solid var(--c-line);
      font-size: 14px;
    }
    .spec-table th {
      width: 34%;
      background: #F7FAF8;
      color: var(--c-ink-soft);
      font-weight: 500;
    }
    .spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
    .note-bound {
      margin-top: 18px;
      padding: 12px 14px;
      border-left: 3px solid var(--c-warn);
      background: #FBF6EC;
      color: var(--c-ink-soft);
      font-size: 14px;
    }
    .matrix {
      display: grid;
      grid-template-columns: 1.15fr 1.15fr 1fr 1fr;
      grid-template-rows: auto auto;
      gap: 18px;
    }
    .matrix-item {
      background: var(--c-card);
      border: 1px solid var(--c-line);
      border-radius: var(--radius);
      padding: 22px 20px 20px;
      position: relative;
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
    }
    .matrix-item::before {
      content: "";
      position: absolute;
      left: 0; right: 0; top: 0;
      height: 3px;
      background: var(--c-primary);
    }
    .matrix-item:hover {
      transform: translateY(-3px);
      border-color: var(--c-primary);
      box-shadow: var(--shadow-hover);
    }
    .matrix-item:nth-child(1),
    .matrix-item:nth-child(2) { grid-column: span 2; min-height: 210px; }
    .idx {
      font-variant-numeric: tabular-nums;
      color: var(--c-accent);
      font-size: 12px;
      letter-spacing: .16em;
    }
    .matrix-item h3 { font-size: 20px; margin: 8px 0 10px; }
    .matrix-item p { color: var(--c-ink-soft); font-size: 15px; }
    .mini-curve { margin-top: 16px; height: 54px; }
    .adv-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .adv-card {
      background: var(--c-card);
      border: 1px solid var(--c-line);
      border-radius: var(--radius);
      padding: 22px 20px;
      box-shadow: var(--shadow);
      transition: transform .2s ease, border-color .2s ease;
    }
    .adv-card:hover { transform: translateY(-3px); border-color: var(--c-primary); }
    .adv-card svg { display: block; margin-bottom: 12px; }
    .adv-card h3 { font-size: 18px; margin-bottom: 8px; }
    .adv-card p { color: var(--c-ink-soft); font-size: 15px; }
    .mod-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }
    .mod-card {
      background: var(--c-card);
      border: 1px solid var(--c-line);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
      display: flex;
      flex-direction: column;
      transition: transform .2s ease, border-color .2s ease;
    }
    .mod-card:hover { transform: translateY(-4px); border-color: var(--c-primary); }
    .mod-card img { width: 100%; height: 190px; object-fit: cover; }
    .mod-body { padding: 20px 20px 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
    .mod-body h3 { font-size: 20px; }
    .mod-body p { color: var(--c-ink-soft); font-size: 15px; }
    .mod-body .btn { margin-top: auto; align-self: flex-start; }
    .tag {
      display: inline-block;
      font-size: 12px;
      color: var(--c-primary);
      background: rgba(27, 122, 99, .08);
      padding: 2px 8px;
      border-radius: 4px;
    }
    .stat-bar {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      border-top: 1px solid var(--c-line);
      border-bottom: 1px solid var(--c-line);
      background: #fff;
    }
    .stat-item {
      padding: 28px 18px;
      border-right: 1px solid var(--c-line);
    }
    .stat-item:last-child { border-right: 0; }
    .stat-item b {
      display: block;
      font-size: 28px;
      font-variant-numeric: tabular-nums;
      letter-spacing: .02em;
      color: var(--c-primary);
      line-height: 1.2;
    }
    .stat-item em {
      font-style: normal;
      font-size: 13px;
      color: var(--c-muted);
    }
    .stat-item span {
      display: block;
      margin-top: 6px;
      color: var(--c-ink-soft);
      font-size: 13px;
    }
    .timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }
    .timeline::before {
      content: "";
      position: absolute;
      left: 4%;
      right: 4%;
      top: 27px;
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--c-primary), transparent);
    }
    .step {
      background: #fff;
      border: 1px solid var(--c-line);
      border-radius: var(--radius);
      padding: 18px 16px 20px;
      position: relative;
    }
    .step-num {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--c-primary);
      color: #fff;
      display: grid;
      place-items: center;
      font-size: 13px;
      margin-bottom: 12px;
      font-variant-numeric: tabular-nums;
    }
    .step h3 { font-size: 16px; margin-bottom: 8px; }
    .step p { color: var(--c-ink-soft); font-size: 14px; }
    .step strong { display: block; margin-top: 10px; color: var(--c-primary-deep); font-size: 13px; font-weight: 600; }
    .scene-list { display: flex; flex-direction: column; gap: 22px; }
    .scene {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      min-height: 280px;
      border: 1px solid var(--c-line);
      background: #fff;
      overflow: hidden;
    }
    .scene:nth-child(even) { grid-template-columns: .85fr 1.15fr; }
    .scene:nth-child(even) .scene-photo { order: -1; }
    .scene-photo {
      background-size: cover;
      background-position: center;
      min-height: 240px;
      position: relative;
    }
    .scene-photo::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(18, 24, 22, .05), rgba(18, 24, 22, .28));
    }
    .scene-body { padding: 28px 32px; }
    .scene-body h3 { font-size: 22px; margin: 10px 0 12px; }
    .scene-body li {
      position: relative;
      padding-left: 14px;
      color: var(--c-ink-soft);
      margin-top: 8px;
      font-size: 15px;
    }
    .scene-body li::before {
      content: "";
      position: absolute;
      left: 0;
      top: .7em;
      width: 6px;
      height: 1px;
      background: var(--c-primary);
    }
    .dark-band {
      background: var(--c-dark);
      color: #E7EEEA;
      padding: 0;
    }
    .dark-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      min-height: 460px;
    }
    .dark-copy {
      padding: 80px 8% 80px 0;
      background:
        radial-gradient(circle at 12% 18%, rgba(39, 196, 176, .12), transparent 28%),
        var(--c-dark);
    }
    .container.dark-wrap { display: grid; grid-template-columns: 1.05fr .95fr; gap: 0; }
    .dark-copy h2 { color: #F4F8F6; }
    .dark-copy .lead { color: #B7C7C0; }
    .discipline { margin-top: 24px; }
    .discipline li {
      padding: 12px 0;
      border-top: 1px solid rgba(213, 221, 216, .12);
      color: #D5E2DC;
    }
    .dark-photo {
      min-height: 460px;
      background-size: cover;
      background-position: center;
      position: relative;
    }
    .dark-photo svg {
      position: absolute;
      left: 24px;
      right: 24px;
      bottom: 24px;
      opacity: .85;
    }
    .caption {
      position: absolute;
      left: 24px;
      bottom: 88px;
      font-size: 12px;
      letter-spacing: .12em;
      color: #C9EDE6;
    }
    .case-wall {
      display: grid;
      grid-template-columns: 1.3fr .9fr 1fr;
      grid-auto-rows: 168px;
      gap: 14px;
    }
    .case-tile {
      border: 1px solid var(--c-line);
      background: #fff;
      padding: 18px 18px 16px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      text-align: left;
      color: inherit;
      border-radius: var(--radius);
      transition: transform .2s ease, border-color .2s ease;
      min-height: 44px;
    }
    .case-tile:hover { transform: translateY(-3px); border-color: var(--c-primary); color: inherit; }
    .case-tile:nth-child(1) {
      grid-column: 1 / 2;
      grid-row: 1 / 3;
      background:
        linear-gradient(180deg, rgba(18, 24, 22, .55), rgba(18, 24, 22, .78)),
        url("/assets/images/4bec3b05a30e7d4e.jpg") center/cover;
      color: #F4F8F6;
    }
    .case-tile:nth-child(4) {
      grid-column: 1 / 4;
      background: #17352D;
      color: #E7F3EE;
    }
    .case-tile .ind { font-size: 12px; letter-spacing: .12em; color: var(--c-primary); }
    .case-tile:nth-child(1) .ind, .case-tile:nth-child(4) .ind { color: var(--c-accent); }
    .case-tile h3 { font-size: 18px; margin: 8px 0; }
    .case-tile p { font-size: 14px; color: var(--c-ink-soft); }
    .case-tile:nth-child(1) p, .case-tile:nth-child(4) p { color: #C9D4CE; }
    .case-tile b { font-variant-numeric: tabular-nums; color: var(--c-primary); font-size: 20px; }
    .case-tile:nth-child(1) b, .case-tile:nth-child(4) b { color: var(--c-accent); }
    .stories { display: flex; flex-direction: column; gap: 28px; }
    .story {
      display: grid;
      grid-template-columns: 280px 1fr;
      gap: 32px;
      background: #fff;
      border: 1px solid var(--c-line);
      padding: 18px;
      align-items: center;
    }
    .story:nth-child(2) { grid-template-columns: 1fr 280px; }
    .story:nth-child(2) img { order: 2; }
    .story img { width: 100%; height: 220px; object-fit: cover; border-radius: 4px; }
    .story h3 { font-size: 20px; margin-bottom: 8px; }
    .story p { color: var(--c-ink-soft); }
    .story .who { color: var(--c-primary); font-size: 13px; letter-spacing: .08em; margin-bottom: 8px; }
    .result-bar {
      background: var(--c-dark-2);
      color: #E7EEEA;
      padding: 36px 0;
    }
    .result-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
    }
    .result-item {
      padding: 8px 12px;
      border-left: 1px solid rgba(39, 196, 176, .28);
    }
    .result-item b {
      display: block;
      font-size: 32px;
      font-variant-numeric: tabular-nums;
      color: var(--c-accent);
      line-height: 1.15;
    }
    .result-item span { color: #AEBDB7; font-size: 13px; }
    .review-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }
    .review {
      background: #fff;
      border: 1px solid var(--c-line);
      padding: 24px 22px;
      border-radius: var(--radius);
    }
    .review:nth-child(2) { margin-top: 28px; }
    .review:nth-child(3) { margin-top: -12px; }
    .review:nth-child(4) { margin-top: 16px; }
    .review q {
      display: block;
      quotes: none;
      color: var(--c-ink-soft);
      font-size: 15px;
    }
    .review footer {
      margin-top: 14px;
      font-size: 13px;
      color: var(--c-primary);
      background: none;
      padding: 0;
      border: 0;
      display: block;
    }
    .news-list { display: flex; flex-direction: column; gap: 14px; }
    .news-card {
      display: grid;
      grid-template-columns: 220px 1fr auto;
      gap: 20px;
      align-items: center;
      background: #fff;
      border: 1px solid var(--c-line);
      padding: 12px 16px 12px 12px;
      border-radius: var(--radius);
      color: inherit;
      transition: border-color .2s ease, transform .2s ease;
    }
    .news-card:hover { border-color: var(--c-primary); transform: translateY(-2px); color: inherit; }
    .news-card img { width: 220px; height: 120px; object-fit: cover; }
    .news-card h3 { font-size: 18px; margin-bottom: 6px; }
    .news-card p { color: var(--c-ink-soft); font-size: 14px; }
    .news-more { margin-top: 18px; }
    .partner-wall {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
    }
    .partner {
      min-height: 72px;
      display: grid;
      place-items: center;
      border: 1px solid var(--c-line);
      background: #fff;
      color: #7A8680;
      letter-spacing: .12em;
      font-size: 14px;
      filter: grayscale(1);
    }
    .faq-list { display: flex; flex-direction: column; gap: 10px; }
    .faq-item { border: 1px solid var(--c-line); background: #fff; border-radius: var(--radius); overflow: hidden; }
    .faq-item button {
      width: 100%;
      text-align: left;
      background: #fff;
      border: 0;
      min-height: 52px;
      padding: 12px 48px 12px 18px;
      font-weight: 600;
      position: relative;
      color: var(--c-ink);
    }
    .faq-item button::after {
      content: "+";
      position: absolute;
      right: 18px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--c-primary);
      font-size: 18px;
    }
    .faq-item.is-open button::after { content: "–"; }
    .faq-item .faq-a {
      display: none;
      padding: 0 18px 16px;
      background: #F7FAF8;
      color: var(--c-ink-soft);
    }
    .faq-item.is-open .faq-a { display: block; }
    .guard {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      border: 1px solid var(--c-line);
      background: #fff;
    }
    .guard article {
      padding: 22px 20px;
      border-right: 1px solid var(--c-line);
    }
    .guard article:last-child { border-right: 0; }
    .guard h3 { font-size: 16px; margin-bottom: 6px; }
    .guard p { color: var(--c-ink-soft); font-size: 14px; }
    .contact-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 28px;
    }
    .form-card, .contact-side {
      background: #fff;
      border: 1px solid var(--c-line);
      border-radius: var(--radius);
      padding: 28px 26px;
      box-shadow: var(--shadow);
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px 16px;
    }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    label { font-size: 13px; color: var(--c-ink-soft); }
    input, select, textarea {
      border: 1px solid var(--c-line);
      border-radius: 4px;
      padding: 10px 12px;
      background: #FCFDFC;
      color: var(--c-ink);
      min-height: 44px;
    }
    textarea { min-height: 110px; resize: vertical; }
    input:focus, select:focus, textarea:focus {
      border-color: var(--c-primary);
      outline: 2px solid rgba(39, 196, 176, .25);
      outline-offset: 0;
    }
    .is-error { border-color: var(--c-alert) !important; }
    .form-msg {
      margin: 10px 0;
      font-size: 14px;
      color: var(--c-alert);
    }
    .form-ok {
      background: #E8F6F1;
      border: 1px solid #B7E0D3;
      color: var(--c-primary-deep);
      padding: 16px 18px;
    }
    .contact-side h3 { font-size: 20px; margin-bottom: 12px; }
    .contact-side li { margin: 8px 0; color: var(--c-ink-soft); }
    .schematic {
      margin-top: 18px;
      height: 180px;
      border: 1px dashed var(--c-line);
      background:
        radial-gradient(circle at 30% 40%, rgba(27, 122, 99, .12), transparent 26%),
        repeating-linear-gradient(90deg, rgba(27, 122, 99, .12) 0 1px, transparent 1px 22px),
        repeating-linear-gradient(0deg, rgba(27, 122, 99, .12) 0 1px, transparent 1px 22px);
      position: relative;
    }
    .schematic span {
      position: absolute;
      font-size: 12px;
      color: var(--c-primary);
      letter-spacing: .08em;
    }
    .schematic span:nth-child(1) { left: 16px; top: 16px; }
    .schematic span:nth-child(2) { right: 16px; top: 42%; }
    .schematic span:nth-child(3) { left: 28%; bottom: 18px; }
    .site-footer {
      background: #0B100E;
      color: #C9D4CE;
      padding: 56px 0 24px;
    }
    .foot-grid {
      display: grid;
      grid-template-columns: 1.3fr .9fr .9fr 1fr;
      gap: 28px;
      padding-bottom: 28px;
      border-bottom: 1px solid rgba(213, 221, 216, .12);
    }
    .site-footer h3 { color: #F4F8F6; font-size: 16px; margin-bottom: 12px; }
    .site-footer a { color: #C9D4CE; }
    .site-footer a:hover { color: var(--c-accent); }
    .site-footer p, .site-footer li { font-size: 14px; line-height: 1.8; }
    .copy {
      padding-top: 18px;
      font-size: 13px;
      color: #8FA39B;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
    }
    @media (max-width: 1440px) {
      .hero h1, .slide h2.hero-title { font-size: 40px; }
    }
    @media (max-width: 1024px) {
      .nav-links { display: none; }
      .nav-toggle { display: inline-flex; margin-left: auto; }
      .slide-inner, .intro-grid, .dark-grid, .container.dark-wrap, .contact-grid, .foot-grid {
        grid-template-columns: 1fr;
      }
      .matrix { grid-template-columns: 1fr 1fr; }
      .matrix-item:nth-child(1), .matrix-item:nth-child(2) { grid-column: span 2; }
      .adv-grid, .mod-grid, .stat-bar, .timeline, .result-grid, .partner-wall, .guard {
        grid-template-columns: 1fr 1fr;
      }
      .stat-item:nth-child(2n) { border-right: 0; }
      .case-wall { grid-template-columns: 1fr 1fr; grid-auto-rows: 180px; }
      .case-tile:nth-child(1) { grid-row: auto; }
      .case-tile:nth-child(4) { grid-column: 1 / -1; }
      .story, .story:nth-child(2) { grid-template-columns: 1fr; }
      .story:nth-child(2) img { order: 0; }
      .news-card { grid-template-columns: 180px 1fr; }
      .hero, .hero-track, .slide-inner { min-height: 0; }
      .slide-inner { padding-top: 40px; }
      .dark-copy { padding: 56px 0 24px; }
      .scene, .scene:nth-child(even) { grid-template-columns: 1fr; }
      .scene:nth-child(even) .scene-photo { order: 0; }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 32px, var(--container)); }
      .topbar { display: none; }
      .hero h1, .slide h2.hero-title { font-size: 30px; }
      .section { padding: 72px 0; }
      .section h2 { font-size: 26px; }
      .hero-arrows { display: none; }
      .matrix, .adv-grid, .mod-grid, .stat-bar, .timeline, .result-grid, .partner-wall, .guard, .review-grid, .case-wall {
        grid-template-columns: 1fr;
      }
      .matrix-item:nth-child(1), .matrix-item:nth-child(2) { grid-column: auto; }
      .timeline::before { display: none; }
      .stat-item, .guard article { border-right: 0; border-bottom: 1px solid var(--c-line); }
      .form-grid, .news-card { grid-template-columns: 1fr; }
      .news-card img { width: 100%; height: 160px; }
      .nav-cta .btn { padding: 10px 12px; letter-spacing: .06em; font-size: 13px; }
      .demo-grid { grid-template-columns: 1fr 1fr 1fr; }
      .spec-table thead { display: none; }
      .spec-table tr { display: block; border-bottom: 1px solid var(--c-line); }
      .spec-table th, .spec-table td { display: block; width: 100%; padding: 8px 12px; }
      .review:nth-child(2), .review:nth-child(3), .review:nth-child(4) { margin-top: 0; }
    }
    @media (max-width: 520px) {
      .hero h1, .slide h2.hero-title { font-size: 28px; }
      .demo-grid { grid-template-columns: 1fr; }
      .hero-actions .btn { width: 100%; }
      .mainnav { gap: 10px; }
      .logo-text strong { font-size: 15px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after {
        animation: none !important;
        transition: none !important;
      }
    }