:root{
  --red:#e30613; --red-d:#b8040f; --ink:#14171b; --ink2:#434a53; --mute:#6b7480;
  --bg:#ffffff; --alt:#f3f4f6; --line:#e2e5e9; --card:#ffffff; --dark:#101317;
  --r:14px; --sh:0 10px 30px rgba(16,19,23,.08);
  --font:"Inter","Segoe UI",system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.55;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{width:min(1240px,100% - 40px);margin-inline:auto}
h1,h2,h3{line-height:1.12;margin:0;letter-spacing:-.02em}
h1{font-size:clamp(2rem,3.7vw,3.15rem);font-weight:800}
h2{font-size:clamp(1.7rem,3vw,2.5rem);font-weight:800}
h3{font-size:1.1rem;font-weight:700}
.eyebrow{color:var(--red);font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:.78rem;margin:0 0 .8rem}
.lead{font-size:1.15rem;color:var(--ink2);max-width:36em}
.sub{color:var(--ink2);max-width:46em;margin:.8rem 0 0}
.note,.hint{color:var(--mute);font-size:.85rem}
.hint{text-align:center;margin:.5rem 0 0}

/* header */
.top{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:24px;height:66px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;letter-spacing:.06em;font-size:1.2rem}
.nav{display:flex;gap:26px;margin-left:auto}
.nav a{text-decoration:none;font-weight:600;font-size:.93rem;color:var(--ink2)}
.nav a:hover{color:var(--red)}
.tools{display:flex;align-items:center;gap:12px}
.lang{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden}
.lang button{white-space:nowrap;border:0;background:none;padding:7px 12px;font:inherit;font-weight:700;font-size:.82rem;cursor:pointer;color:var(--ink2)}
.lang button[aria-pressed=true]{background:var(--ink);color:#fff}
.burger{display:none;background:none;border:0;width:40px;height:40px;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;padding:9px}
.burger i{display:block;height:2px;background:var(--ink);border-radius:2px}

.btn{display:inline-flex;align-items:center;gap:8px;border:1.5px solid var(--ink);background:none;color:var(--ink);font:inherit;font-weight:700;padding:11px 20px;border-radius:999px;cursor:pointer;text-decoration:none;transition:.15s;font-size:.95rem}
.btn:hover{background:var(--ink);color:#fff}
.btn.primary{background:var(--red);border-color:var(--red);color:#fff}
.btn.primary:hover{background:var(--red-d);border-color:var(--red-d)}
.btn.ghost{border-color:var(--line)}
.btn.ghost:hover{border-color:var(--ink)}
.btn.small{padding:7px 14px;font-size:.84rem}
.btn.wide{width:100%;justify-content:center;padding:14px}
.quote-btn{background:var(--ink);color:#fff}
.quote-btn b{background:var(--red);border-radius:999px;min-width:22px;height:22px;display:inline-grid;place-items:center;font-size:.78rem;padding:0 6px}

/* hero */
.hero{background:radial-gradient(1000px 520px at 78% 30%,#eef0f3,transparent 70%),var(--bg);padding:56px 0 40px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.02fr 1.1fr;gap:40px;align-items:center}
.hero h1{margin-bottom:1.1rem}
.cta{display:flex;gap:12px;margin:1.8rem 0 2rem;flex-wrap:wrap}
.facts{display:flex;gap:34px;list-style:none;padding:0;margin:0}
.facts b{display:block;font-size:1.9rem;font-weight:800;letter-spacing:-.02em}
.facts span{color:var(--mute);font-size:.88rem}
.hero-view{position:relative}
.viewer{position:relative;width:100%;aspect-ratio:1/0.92;border-radius:22px;background:linear-gradient(160deg,#fbfbfc,#e6e9ed);border:1px solid var(--line);overflow:hidden;touch-action:pan-y}
.viewer.tall{aspect-ratio:auto;height:min(68vh,620px);min-height:380px}
.viewer .fallback{position:absolute;inset:0;display:grid;place-items:center;padding:24px;text-align:center;color:var(--mute)}
.view-bar{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-top:12px;flex-wrap:wrap}
.chip{font-size:.82rem;color:var(--ink2);background:var(--alt);padding:6px 12px;border-radius:999px}
.slider{display:flex;align-items:center;gap:10px;font-size:.85rem;font-weight:600;color:var(--ink2)}
input[type=range]{accent-color:var(--red);width:100%}
.slider input{width:150px}

.strip{background:var(--dark);color:#fff}
.strip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;padding:30px 0}
.strip b{display:block;margin-bottom:4px}
.strip span{color:#aab2bc;font-size:.92rem}

.sec{padding:84px 0}
.sec.alt{background:var(--alt)}
.sec-head{margin-bottom:34px}

/* studio */
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:18px}
.tabs button{border:1.5px solid var(--line);background:#fff;font:inherit;font-weight:700;padding:10px 18px;border-radius:999px;cursor:pointer;color:var(--ink2)}
.tabs button[aria-selected=true]{background:var(--ink);color:#fff;border-color:var(--ink)}
.studio{display:grid;grid-template-columns:360px 1fr;gap:24px;align-items:start}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--sh)}
.panel h3{margin-bottom:14px}
.ctl{margin-bottom:16px}
.ctl label{display:flex;justify-content:space-between;font-size:.85rem;font-weight:600;margin-bottom:6px;color:var(--ink2)}
.ctl label output{color:var(--ink);font-variant-numeric:tabular-nums}
.ctl select{width:100%;padding:10px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff}
.checks{display:grid;gap:8px;margin-bottom:16px}
.checks label{display:flex;gap:10px;align-items:center;font-size:.92rem;cursor:pointer}
.checks input{accent-color:var(--red);width:17px;height:17px}
.bom{width:100%;border-collapse:collapse;font-size:.85rem;margin:6px 0 14px}
.bom th{text-align:left;color:var(--mute);font-weight:600;padding:5px 0;border-bottom:1px solid var(--line)}
.bom td{padding:6px 0;border-bottom:1px solid var(--alt);font-variant-numeric:tabular-nums}
.bom td:last-child,.bom th:last-child{text-align:right}
.kpis{display:flex;gap:10px;margin:4px 0 14px}
.kpis div{flex:1;background:var(--alt);border-radius:10px;padding:10px 12px}
.kpis b{display:block;font-size:1.05rem;white-space:nowrap}
.kpis span{font-size:.75rem;color:var(--mute)}

/* categories + results */
.cats{display:grid;grid-template-columns:repeat(auto-fill,minmax(188px,1fr));gap:12px;margin-bottom:26px}
.cat{background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:14px;text-align:left;cursor:pointer;font:inherit;transition:.15s}
.cat:hover{border-color:var(--ink);transform:translateY(-2px)}
.cat[aria-pressed=true]{border-color:var(--red);box-shadow:0 0 0 3px rgba(227,6,19,.12)}
.cat b{display:block;font-size:.95rem}
.cat small{color:var(--mute)}
.finder{display:flex;align-items:center;gap:14px;margin-bottom:16px;flex-wrap:wrap}
.finder input{flex:1;min-width:240px;padding:14px 18px;border:1.5px solid var(--line);border-radius:999px;font:inherit;background:#fff}
.finder input:focus{outline:none;border-color:var(--ink)}
.count{color:var(--mute);font-size:.9rem}
.results{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.item{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column}
.item .pic{height:128px;background:#eceef1 center/cover no-repeat;border-bottom:1px solid var(--line);cursor:pointer;position:relative}
.item .pic::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 0 var(--red);transition:.15s}
.item:hover .pic::after{box-shadow:inset 0 0 0 3px var(--red)}
.item .tx{padding:12px 14px;flex:1}
.item .pn{font-size:.74rem;color:var(--mute);font-variant-numeric:tabular-nums}
.item .nm{font-weight:700;margin:2px 0 4px;word-break:break-word}
.item .sp{font-size:.8rem;color:var(--ink2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:2.5em}
.item .act{display:flex;gap:8px;padding:0 14px 14px}
.more{text-align:center;margin-top:24px}
.empty{grid-column:1/-1;text-align:center;color:var(--mute);padding:40px}

/* applications */
.apps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.app{position:relative;border-radius:var(--r);overflow:hidden;aspect-ratio:4/3;background:#222}
.app img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.app:hover img{transform:scale(1.05)}
.app span{position:absolute;left:0;right:0;bottom:0;padding:30px 14px 12px;color:#fff;font-weight:700;background:linear-gradient(transparent,rgba(0,0,0,.72))}
.app.big{grid-column:span 2;grid-row:span 2;aspect-ratio:auto}

.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.steps li{background:#fff;border-radius:var(--r);padding:26px;border:1px solid var(--line)}
.steps b{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--red);color:#fff;margin-bottom:14px}
.steps p{color:var(--ink2);margin:.5rem 0 0}

/* handbook */
.hb-tools{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(112px,1fr));gap:10px;max-height:560px;overflow:auto;padding:4px;border:1px solid var(--line);border-radius:12px;background:var(--alt)}
.thumbs button{border:0;background:#fff;padding:0;border-radius:6px;overflow:hidden;cursor:pointer;position:relative;box-shadow:0 1px 3px rgba(0,0,0,.12)}
.thumbs button:hover{outline:2px solid var(--red)}
.thumbs img{width:100%;aspect-ratio:3/4;object-fit:cover}
.thumbs i{position:absolute;right:4px;bottom:4px;background:rgba(0,0,0,.65);color:#fff;font-style:normal;font-size:.7rem;padding:1px 6px;border-radius:99px}

/* offices */
.offices{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.office{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px}
.office h3{margin:.2rem 0 .8rem}
.office .flag{display:inline-block;background:var(--ink);color:#fff;font-size:.72rem;font-weight:700;letter-spacing:.1em;padding:3px 10px;border-radius:99px}
.office address{font-style:normal;color:var(--ink2);margin-bottom:12px}
.office dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:4px 12px;font-size:.92rem}
.office dt{color:var(--mute)}
.office dd{margin:0;word-break:break-all}
.office a{color:var(--red);font-weight:600;text-decoration:none}
.foot{background:var(--dark);color:#aab2bc;padding:34px 0}
.foot-grid{display:flex;gap:26px;align-items:center;flex-wrap:wrap;justify-content:space-between}
.foot .brand{color:#fff}.foot p{margin:0;max-width:40em;font-size:.88rem}
.foot a{color:#fff}

/* modal */
.modal{position:fixed;inset:0;z-index:90;background:rgba(10,12,15,.72);display:grid;place-items:center;padding:20px}
.modal[hidden],.scrim[hidden]{display:none}
.modal-card{background:#fff;border-radius:18px;width:min(1100px,100%);max-height:94vh;display:flex;flex-direction:column;position:relative;overflow:hidden}
.x{position:absolute;top:10px;right:12px;border:0;background:var(--alt);width:36px;height:36px;border-radius:50%;font-size:1.4rem;cursor:pointer;line-height:1;z-index:3}
.m-head{display:flex;justify-content:space-between;gap:18px;padding:20px 64px 14px 24px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.m-head .pn{font-size:.8rem;color:var(--mute)}
.m-head h3{font-size:1.4rem}.m-head p{margin:.2rem 0 0;color:var(--ink2);font-size:.9rem}
.m-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.m-actions input[type=number]{width:70px;padding:9px;border:1px solid var(--line);border-radius:10px;font:inherit}
.m-body{overflow:auto;padding:0;background:#e9ebee;position:relative;min-height:300px}
.pagebox{position:relative;width:min(100%,900px);margin:0 auto;background:#fff}
.pagebox img{width:100%;height:auto}
.hl{position:absolute;border:3px solid var(--red);background:rgba(227,6,19,.14);border-radius:5px;box-shadow:0 0 0 9999px rgba(0,0,0,.0);pointer-events:none;animation:pulse 1.6s ease-in-out 3}
@keyframes pulse{50%{background:rgba(227,6,19,.32)}}
.m-tabs{display:flex;gap:6px;padding:10px 24px;background:#fff;border-bottom:1px solid var(--line)}
.m-tabs button{border:0;background:var(--alt);font:inherit;font-weight:700;padding:8px 16px;border-radius:99px;cursor:pointer}
.m-tabs button[aria-selected=true]{background:var(--ink);color:#fff}
.pager{position:sticky;bottom:0;display:flex;justify-content:center;gap:8px;padding:10px;background:rgba(255,255,255,.95)}
.m-3d{height:min(62vh,520px)}

/* drawer */
.scrim{position:fixed;inset:0;background:rgba(10,12,15,.5);z-index:70}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(460px,100%);background:#fff;z-index:80;transform:translateX(102%);transition:transform .28s ease,box-shadow .28s;display:flex;flex-direction:column;visibility:hidden}
.drawer.open{transform:none;visibility:visible;box-shadow:-20px 0 50px rgba(0,0,0,.18)}
.d-head{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;border-bottom:1px solid var(--line)}
.d-head .x{position:static}
.d-body{overflow:auto;padding:18px 22px 30px}
.qi{display:grid;grid-template-columns:1fr auto;gap:2px 10px;padding:12px 0;border-bottom:1px solid var(--line)}
.qi b{font-size:.92rem;word-break:break-word}
.qi small{color:var(--mute);grid-column:1}
.qi .qty{display:flex;align-items:center;gap:6px;grid-column:2;grid-row:1/3;align-self:center}
.qi .qty button{width:28px;height:28px;border-radius:50%;border:1px solid var(--line);background:#fff;cursor:pointer;font-weight:700}
.qi .qty span{min-width:22px;text-align:center;font-variant-numeric:tabular-nums}
.qi .rm{border:0;background:none;color:var(--red);cursor:pointer;font:inherit;font-size:.8rem;padding:0;margin-left:6px}
.q-empty{color:var(--mute);padding:14px 0 6px}
#qForm{margin-top:18px;display:grid;gap:12px}
#qForm label span{display:block;font-size:.82rem;font-weight:600;color:var(--ink2);margin-bottom:4px}
#qForm input,#qForm select,#qForm textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff}
#qForm input:focus,#qForm textarea:focus,#qForm select:focus{outline:2px solid var(--ink);outline-offset:-1px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.hp{position:absolute!important;left:-9999px;width:1px;height:1px;opacity:0}
.form-msg{margin:0;font-size:.9rem;min-height:1.3em}
.form-msg.ok{color:#127a3a;font-weight:600}.form-msg.err{color:var(--red-d);font-weight:600}

@media (max-width:1020px){
  .hero-grid,.studio{grid-template-columns:1fr}
  .apps{grid-template-columns:repeat(2,1fr)}
  .app.big{grid-column:span 2}
  .offices,.steps,.strip-grid{grid-template-columns:1fr}
}
@media (max-width:860px){
  .burger{display:flex}
  .nav{position:absolute;top:66px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:8px 20px 16px;border-bottom:1px solid var(--line);display:none}
  .nav.open{display:flex}.nav a{padding:12px 0}
  .quote-btn span{display:none}
}
@media (max-width:480px){.brand span{display:none}}
@media (max-width:560px){
  .sec{padding:60px 0}
  .grid2{grid-template-columns:1fr}
  .facts{gap:22px}
  .slider input{width:110px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

.tour-btn{position:absolute;right:12px;bottom:12px;z-index:3;border:0;border-radius:999px;background:var(--ink);color:#fff;font:inherit;font-weight:700;font-size:.85rem;padding:9px 16px;cursor:pointer;box-shadow:0 4px 14px rgba(0,0,0,.25)}
.tour-btn:hover{background:#000}
.tour-btn[aria-pressed=true]{background:var(--red)}