@import url("tianji-mobile-navigation.css?v=20260925-1");
:root{--ink:#1f312b;--dark:#17251f;--paper:#f3ecdc;--paper2:#e8dcc6;--orange:#c86832;--gold:#cf9a52;--sage:#708675;--line:#b9aa90;--white:#fffdf7}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:"PingFang SC","Microsoft YaHei",sans-serif}body:before{content:"";position:fixed;inset:0;pointer-events:none;z-index:20;opacity:.18;background-image:radial-gradient(#4b3c2d 0.55px,transparent .65px),radial-gradient(#fff 0.65px,transparent .75px);background-size:7px 7px,11px 11px;background-position:0 0,2px 3px;mix-blend-mode:multiply}a{color:inherit}.site-head{height:78px;padding:0 5.5vw;display:flex;align-items:center;gap:4vw;background:#17251ff2;color:#f6ecd8;position:fixed;inset:0 0 auto;z-index:10;border-bottom:1px solid #ffffff20;backdrop-filter:blur(12px)}.brand{display:flex;align-items:center;gap:12px;text-decoration:none}.brand img{width:126px;filter:brightness(0) invert(1)}.brand span{font:10px Georgia;letter-spacing:3px;color:#d7b890}.site-head nav{display:flex;gap:2.2vw;margin-left:auto}.site-head nav a{text-decoration:none;font-size:12px;color:#d9d1c4}.site-head nav a:hover{color:white}.head-call{display:grid;text-decoration:none;border-left:1px solid #ffffff29;padding-left:25px}.head-call small{font-size:8px;color:#a79d90;letter-spacing:2px}.head-call b{font:17px Georgia;color:#e6b584;margin-top:4px}.hero{min-height:100vh;position:relative;overflow:hidden;background:#18271f;color:#fff;padding:150px 6vw 90px;display:grid;grid-template-columns:1.15fr .55fr;gap:10vw;align-items:center}.hero-paint{position:absolute;inset:0;background:linear-gradient(90deg,#17251fee 0%,#17251fbc 43%,#17251f24 76%),linear-gradient(180deg,transparent 70%,#17251f 100%),url('assets/media-optimized-20261017/watercolor-air-desktop.jpg') 0 0/200% 200% no-repeat;filter:saturate(.8) contrast(1.04)}.hero-paint:after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 67% 35%,transparent 0 23%,#17251f35 60%),linear-gradient(115deg,transparent 0 65%,#d2914020 65%);mix-blend-mode:screen}.hero-copy,.hero-aside,.scroll-note{position:relative}.eyebrow{font:11px Georgia;letter-spacing:3px;color:#ddaa73}.hero h1{font:500 clamp(55px,6.5vw,98px)/1.12 Georgia,"Songti SC",serif;margin:23px 0 28px;letter-spacing:-4px}.hero h1 em{font-style:normal;color:#f0c995;text-shadow:0 2px 18px #0005}.hero-copy>p{max-width:680px;font-size:14px;line-height:2;color:#d9d1c5}.hero-actions{display:flex;gap:12px;margin-top:38px}.brush{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:0 25px;text-decoration:none;font-weight:700;font-size:12px;position:relative;clip-path:polygon(2% 10%,97% 0,100% 88%,4% 100%,0 50%)}.brush.primary{background:var(--orange);color:white}.brush.ghost{background:#f6eadb;color:var(--ink)}.hero-aside{border-left:1px solid #ffffff35;padding-left:30px}.hero-aside>span{display:block;font:22px/1.6 Georgia,"Songti SC";color:#f1ddc0;margin-bottom:28px}.hero-aside>div{display:grid;grid-template-columns:45px 1fr;gap:12px;padding:14px 0;border-top:1px solid #ffffff1f}.hero-aside b{font:italic 16px Georgia;color:#d9985e}.hero-aside p{margin:0;font-size:11px}.hero-aside small{color:#958d81}.scroll-note{position:absolute;bottom:27px;left:6vw;font:8px Georgia;letter-spacing:2px;color:#978e82}.scroll-note i{display:inline-block;width:80px;height:1px;background:#d6935c;margin:0 0 2px 12px}.air-index{display:grid;grid-template-columns:1fr auto 1fr auto 1fr auto 1fr;padding:30px 6vw;background:#f6f0e5;border-bottom:1px solid var(--line)}.air-index>div{display:grid;justify-items:center;gap:6px}.air-index b{font:20px Georgia,"Songti SC"}.air-index span{font-size:9px;color:#867a6d}.air-index>i{width:1px;background:#cfc1ab}.paper{background-color:var(--paper);background-image:linear-gradient(90deg,#fff4 1px,transparent 1px),linear-gradient(#fff3 1px,transparent 1px);background-size:70px 70px}.manifesto{position:relative;padding:120px 8vw;display:grid;grid-template-columns:.75fr 1.1fr;gap:10vw;overflow:hidden}.paint-number{position:absolute;left:-12px;top:25px;font:italic 210px/1 Georgia;color:#d3b98d2b}.manifesto h2,.section-head h2{font:500 clamp(42px,4.6vw,70px)/1.25 Georgia,"Songti SC";margin:16px 0}.eyebrow.ink{color:#9c613e}.manifesto-copy{padding-top:45px}.manifesto-copy>p{line-height:2;color:#756c60;max-width:650px}.manifesto blockquote{font:28px/1.6 Georgia,"Songti SC";border-left:4px solid var(--orange);margin:35px 0;padding:4px 0 4px 25px;color:#395447}.manifesto-copy>a{font-size:11px;color:#a6542d}.solutions{padding:110px 6vw;background:#20342d;color:#f4ead8}.section-head{display:grid;grid-template-columns:1.15fr .6fr;gap:8vw;align-items:end;margin-bottom:50px}.section-head>p{line-height:2;color:#968f83}.solutions .section-head>p{color:#aaa497}.solution-list{border-top:1px solid #ffffff2c}.solution{display:grid;grid-template-columns:70px 1.2fr .65fr 40px;gap:30px;align-items:center;padding:28px 10px;text-decoration:none;border-bottom:1px solid #ffffff22;transition:.35s}.solution>span{font:italic 15px Georgia;color:#ca8650}.solution h3{font:30px Georgia,"Songti SC";margin:0 0 8px}.solution p{color:#9faaa2;margin:0;font-size:11px;line-height:1.8}.solution em{font:9px Georgia;letter-spacing:2px;color:#8b968e}.solution>b{font-size:24px}.solution:hover,.solution.active{background:#f1e3cc;color:#21352e;transform:translateX(8px);padding-left:25px}.solution:hover p,.solution.active p{color:#716c62}.watercolor-window{min-height:720px;display:grid;grid-template-columns:1.35fr .65fr;background:#17251f}.watercolor-image{min-height:720px;background:var(--img,none) 100% 100%/200% 200% no-repeat;filter:saturate(.78) contrast(1.02)}.watercolor-caption{color:#f2e8d8;padding:80px 6vw;display:flex;flex-direction:column;justify-content:center;background:radial-gradient(circle at 0 50%,#cf7a3820,transparent 52%)}.watercolor-caption>span{font:10px Georgia;letter-spacing:3px;color:#d99f6b}.watercolor-caption h2{font:48px/1.35 Georgia,"Songti SC";margin:22px 0}.watercolor-caption p{line-height:2;color:#a9a197}.cases{padding:110px 6vw}.case-grid{display:grid;grid-template-columns:1.25fr .75fr .75fr;grid-template-rows:1fr 1fr;gap:12px}.case{min-height:340px;background:#ddd0bb;text-decoration:none;position:relative;overflow:hidden;display:flex;align-items:flex-end}.case.wide{grid-row:1/3;min-height:690px}.case figure{position:absolute;inset:0;margin:0;background-image:linear-gradient(180deg,transparent 30%,#18251fcc 100%),var(--img);background-size:cover;background-position:center;filter:saturate(.72) contrast(1.03)}.case figure:after{content:"";position:absolute;inset:0;background:linear-gradient(125deg,#e6b57722,#36533d1f);mix-blend-mode:color}.case>div{position:relative;color:white;padding:30px;width:100%}.case small{color:#e0b384}.case h3{font:29px Georgia,"Songti SC";margin:8px 0}.case p{font-size:10px;line-height:1.8;color:#d2cbc1;max-width:420px}.case span{font-size:9px;border-bottom:1px solid #ffffff70;padding-bottom:4px}.case:hover figure{transform:scale(1.035);transition:.7s}.more-link{display:flex;justify-content:space-between;border:1px solid var(--line);padding:20px;margin-top:14px;text-decoration:none;color:#9e5a36}.process{padding:110px 6vw;background:#d8c6aa}.process ol{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid #83745e}.process li{padding:25px 22px 35px;border-right:1px solid #9c8c74}.process li:last-child{border-right:0}.process li>span{font:italic 15px Georgia;color:#aa572f}.process li>b{display:block;font:18px Georgia,"Songti SC";margin:32px 0 12px}.process li>p{font-size:9px;line-height:1.8;color:#736a5e}.news{padding:110px 6vw}.news .section-head>a{justify-self:end;color:#9e5b35}.news-list{border-top:1px solid var(--line)}.news-list>a{display:grid;grid-template-columns:130px 1.2fr 1fr 30px;gap:25px;align-items:center;padding:25px 5px;border-bottom:1px solid var(--line);text-decoration:none}.news-list time{font:12px Georgia;color:#aa613c}.news-list h3{font:21px Georgia,"Songti SC"}.news-list p{font-size:10px;color:#80766a}.closing{padding:100px 8vw;background:#1e312a;color:#f4ead9;display:grid;grid-template-columns:1fr 1fr;gap:8vw;align-items:center}.closing>div>span{font:10px Georgia;letter-spacing:4px;color:#d69a62}.closing h2{font:58px/1.25 Georgia,"Songti SC";margin:18px 0}.closing p{color:#aaa197}.closing-contact{display:grid;grid-template-columns:1fr 1fr;gap:12px}.closing-contact>a{border-top:1px solid #ffffff35;padding:18px 0;text-decoration:none;font:24px Georgia}.closing-contact small{display:block;font:8px sans-serif;color:#968e83;margin-top:7px}.closing-contact .brush{grid-column:1/3;border:0;padding:0 28px;justify-self:start;font:700 12px sans-serif}footer{padding:45px 6vw;background:#14211c;color:#948d82;display:grid;grid-template-columns:auto 1fr auto;gap:40px;align-items:center;border-top:1px solid #ffffff12}footer p{font-size:9px}footer>div{display:flex;gap:18px}footer>div a{font-size:9px;text-decoration:none}footer>small{grid-column:1/4;font-size:8px;color:#655f57}.reveal{opacity:0;transform:translateY(26px);transition:.9s ease}.reveal.visible{opacity:1;transform:none}.reveal.delay{transition-delay:.18s}@media(max-width:1000px){.site-head nav{display:none}.hero{grid-template-columns:1fr}.hero-aside{max-width:420px}.section-head,.manifesto{grid-template-columns:1fr}.case-grid{grid-template-columns:1fr 1fr}.case.wide{grid-row:auto;grid-column:1/3;min-height:550px}.process ol{grid-template-columns:1fr 1fr}.process li{border-bottom:1px solid #9c8c74}.watercolor-window{grid-template-columns:1fr}.watercolor-image{min-height:520px}.closing{grid-template-columns:1fr}}@media(max-width:650px){.site-head{height:66px;padding:0 16px}.brand img{width:105px}.head-call b{font-size:13px}.head-call{padding-left:12px}.hero{padding:120px 22px 70px}.hero h1{font-size:50px;letter-spacing:-2px}.hero-actions{flex-direction:column;align-items:flex-start}.air-index{grid-template-columns:1fr 1fr;gap:16px;padding:22px}.air-index>i{display:none}.manifesto,.solutions,.cases,.process,.news{padding:75px 18px}.manifesto-copy{padding-top:0}.solution{grid-template-columns:40px 1fr 30px;gap:12px}.solution em{display:none}.solution h3{font-size:23px}.watercolor-image{min-height:330px}.watercolor-caption{padding:55px 22px}.watercolor-caption h2{font-size:38px}.case-grid{grid-template-columns:1fr}.case,.case.wide{grid-column:auto;min-height:420px}.process ol{grid-template-columns:1fr}.process li{border-right:0}.news-list>a{grid-template-columns:1fr}.news-list h3{margin:0}.closing{padding:70px 22px}.closing h2{font-size:43px}.closing-contact{grid-template-columns:1fr}.closing-contact .brush{grid-column:auto}footer{grid-template-columns:1fr;padding:35px 20px}footer>div{flex-wrap:wrap}footer>small{grid-column:auto}}
/* Official footer identity and engineering workflow refinements */
footer{grid-template-columns:1fr auto;gap:34px 40px}
.footer-company{display:flex;align-items:center;gap:28px}
.footer-company>div{display:grid;gap:5px}
.footer-company strong{font:17px Georgia,"Songti SC",serif;color:#e7d7bd;letter-spacing:.5px}
.footer-company p{font-size:9px;margin:0}
.footer-links{display:flex;gap:18px}
.footer-links a{font-size:9px;text-decoration:none}
footer>small{grid-column:1/3}
@media(max-width:650px){footer{grid-template-columns:1fr}.footer-company{align-items:flex-start;flex-direction:column;gap:15px}.footer-links{flex-wrap:wrap}footer>small{grid-column:auto}}
.site-head .brand img{width:174px}
@media(max-width:650px){.site-head .brand img{width:142px}}
.footer-company .brand{height:41px;flex:0 0 auto}
.footer-company .brand img{width:auto;height:100%;object-fit:contain}
@media(max-width:650px){.footer-company .brand{height:35px}.footer-company .brand img{width:auto;height:100%}}
/* Soften the white identity mark against the deep green background. */
.site-head .brand img,.footer-company .brand img{filter:brightness(0) saturate(100%) invert(88%) sepia(14%) saturate(430%) hue-rotate(347deg) brightness(98%) contrast(91%);opacity:.9}
.site-head .home-return{display:inline-flex;align-items:center;height:32px;margin:0;font-size:10px;line-height:1;white-space:nowrap}
/* Increase footer company and navigation copy for clearer reading. */
.footer-company strong{font-size:20px}
.footer-company p{font-size:11px;line-height:1.65}
.footer-links a,footer>div.footer-links a{font-size:11px;line-height:1.4}
/* Footer refinement: stronger utility links and centered legal record. */
.footer-links a,footer>div.footer-links a{font-size:13.2px}
footer>small{grid-column:1/3;justify-self:center;text-align:center;width:100%;margin-top:4px}
@media(max-width:650px){.footer-links a,footer>div.footer-links a{font-size:12px}footer>small{grid-column:auto;justify-self:center;text-align:center;margin-top:8px}}

/* Consistent feedback for every interactive element across the official site. */
a[href],button:not(:disabled),summary,[role="button"]{cursor:pointer;transition:color .24s ease,background-color .24s ease,border-color .24s ease,box-shadow .24s ease,filter .24s ease,transform .24s ease}
button:disabled{cursor:not-allowed}
a[href]:focus-visible,button:focus-visible,summary:focus-visible,[role="button"]:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--orange);outline-offset:4px}
@media(hover:hover){
  a[href]:hover:not(.brand){filter:brightness(1.1)}
  .brush:hover{transform:translateY(-3px);box-shadow:0 12px 28px #0d181344}
  .site-head nav a:hover,.home-return:hover,.head-call:hover{color:#fff;opacity:1}
  .footer-links a:hover,footer a:hover{color:#e7b47b;text-decoration-color:currentColor}
  button:not(:disabled):hover{transform:translateY(-2px);box-shadow:0 8px 20px #4a38251f}
  summary:hover{color:var(--orange)}
  input[type="range"]:hover{filter:saturate(1.2) brightness(1.05)}
}
@media(prefers-reduced-motion:reduce){a[href],button,summary,[role="button"]{transition:none!important}}

/* Six-stage whole-air project workflow. */
.process ol{grid-template-columns:repeat(3,minmax(0,1fr))}
.process li{padding:25px 18px 35px}
.process li:nth-child(3n){border-right:0}
.process li:nth-child(-n+3){border-bottom:1px solid #9c8c74}
.process li.air-entry{background:#ead7b8}
.process li.air-entry>b{color:#8f482b}
@media(max-width:1000px){.process ol{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:650px){.process ol{grid-template-columns:1fr}}

/* Nanchang project film: retain the current airscape as the resting image. */
.watercolor-window{min-height:600px;grid-template-columns:minmax(0,1.15fr) minmax(340px,.85fr)}
.watercolor-image{min-height:600px}
.watercolor-media{position:relative;overflow:hidden;background-color:#17251f}
.watercolor-media video{position:absolute;left:50%;top:50%;width:84%;height:auto;max-height:80%;aspect-ratio:16/9;display:block;object-fit:contain;transform:translate(-50%,-50%);background:#101b17;box-shadow:0 20px 52px #07100c66;opacity:0;pointer-events:none;transition:opacity .38s ease}
.watercolor-media.is-playing video{opacity:1;pointer-events:auto}
.watercolor-play{position:absolute;left:50%;top:50%;z-index:2;display:grid;justify-items:center;gap:10px;transform:translate(-50%,-50%);border:0;background:transparent;color:#fffdf7;text-shadow:0 2px 16px #000;box-shadow:none!important}
.watercolor-play i{display:grid;place-items:center;width:68px;height:68px;border:1px solid #fff9;border-radius:50%;background:#17251fbf;font-style:normal;font-size:20px;padding-left:4px;backdrop-filter:blur(8px)}
.watercolor-play span{font-size:10px;letter-spacing:2px}
.watercolor-media.is-playing .watercolor-play{opacity:0;visibility:hidden;pointer-events:none}
@media(hover:hover){.watercolor-play:hover{transform:translate(-50%,-50%) scale(1.04);box-shadow:none}}
@media(max-width:1000px){.watercolor-window{grid-template-columns:1fr;min-height:0}.watercolor-image{min-height:520px}.watercolor-caption{min-height:420px}.watercolor-media video{width:84%;max-height:84%}}
@media(max-width:650px){.watercolor-image{min-height:360px}.watercolor-caption{min-height:0}.watercolor-media video{width:90%;max-height:86%}.watercolor-play i{width:58px;height:58px}}

@media(max-width:760px){.hero-paint{background-image:linear-gradient(90deg,#17251fee 0%,#17251fbc 43%,#17251f24 76%),linear-gradient(180deg,transparent 70%,#17251f 100%),url("assets/media-optimized-20261017/watercolor-air-mobile.jpg")}}