:root{
  --green:#2FA56A; --green-d:#1F7E50; --green-l:#E7F5EE;
  --blue:#2E7FE0; --blue-d:#1F66B5;
  --cyan:#26C9BC; --cyan-l:#DDF7F4;
  --navy:#0A1C38; --navy-2:#0E2649; --navy-3:#13315C;
  --ink:#16263B; --muted:#5B6C7D; --line:#E3EBE7;
  --bg:#F3F8F6; --bg2:#EAF2EF;
  --wheat:#E8912D;
  --white:#fff;
  --shadow:0 14px 40px -16px rgba(13,40,72,.22);
  --shadow-sm:0 6px 20px -10px rgba(13,40,72,.18);
  --radius:16px;
  --maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,sans-serif;color:var(--ink);line-height:1.7;background:var(--white);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{scroll-margin-top:78px}
.sec{padding:96px 0}
.sec.alt{background:var(--bg)}
.sec-head{max-width:720px;margin:0 auto 56px;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--green-d);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--green),var(--cyan));border-radius:2px}
.sec-head h1,.sec-head h2{font-size:clamp(26px,3.4vw,38px);font-weight:900;letter-spacing:.01em;line-height:1.25;color:var(--ink)}
.sec-head p{margin-top:14px;color:var(--muted);font-size:16px}
.tleft{text-align:left;margin-left:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 26px;border-radius:999px;font-weight:700;font-size:15px;transition:.25s;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--green),var(--green-d));color:#fff;box-shadow:0 12px 26px -10px rgba(31,126,80,.55)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 32px -10px rgba(31,126,80,.6)}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.35);backdrop-filter:blur(6px)}
.btn-ghost:hover{background:rgba(255,255,255,.2);transform:translateY(-2px)}
.btn-line{background:#fff;color:var(--green-d);border:1.5px solid var(--green)}
.btn-line:hover{background:var(--green-l)}
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ===== Header ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:100;transition:.3s}
.header .container{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:11px;color:#fff;font-weight:900;font-size:18px;letter-spacing:.01em}
.logo-mark{height:42px;width:auto;flex:none;background:#fff;border-radius:10px;padding:4px}
.logo small{display:block;font-size:10.5px;font-weight:500;letter-spacing:.18em;opacity:.78}
.nav{display:flex;align-items:center;gap:4px}
.nav a{padding:9px 14px;border-radius:9px;font-size:15px;font-weight:500;color:rgba(255,255,255,.88);transition:.2s}
.nav a:hover{color:#fff;background:rgba(255,255,255,.12)}
.header.scrolled{background:rgba(10,28,56,.92);box-shadow:0 8px 30px -12px rgba(0,0,0,.4);backdrop-filter:blur(10px)}
.header.scrolled .nav a.here{color:var(--cyan)}
.nav a.here,.mobile-menu a.here{color:var(--cyan)}
body.subpage{padding-top:72px}
body.subpage .header{background:rgba(10,28,56,.92);box-shadow:0 8px 30px -12px rgba(0,0,0,.4);backdrop-filter:blur(10px)}
.nav-cta{margin-left:10px}
.burger{display:none;flex-direction:column;gap:5px;width:44px;height:44px;align-items:center;justify-content:center}
.burger span{width:24px;height:2px;background:#fff;border-radius:2px;transition:.3s}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{display:none;position:fixed;top:72px;left:0;right:0;background:var(--navy);padding:10px 20px 22px;box-shadow:0 24px 40px -20px #000;max-height:calc(100vh - 72px);overflow:auto}
.mobile-menu a{display:block;padding:13px 12px;color:#fff;border-bottom:1px solid rgba(255,255,255,.08);font-size:16px}
.mobile-menu.show{display:block}

/* ===== Hero ===== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding:120px 0 70px;color:#fff;overflow:hidden}
.hero-slides{position:absolute;inset:0}
.hero-slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity 1.2s ease;transform:scale(1.05)}
.hero-slide.active{opacity:1}
.hero-slide.s1{background-image:url("../ai/hero.jpg")}
.hero-slide.s2{background-image:url("../ai/center.jpg")}
.hero-text{display:none}
.hero-text.active{display:block;animation:fade .8s ease}
.hero-dots{position:absolute;z-index:3;left:50%;transform:translateX(-50%);bottom:22px;display:flex;gap:10px}
.hdot{width:11px;height:11px;border-radius:6px;border:none;background:rgba(255,255,255,.4);transition:.25s}
.hdot.active{background:var(--cyan);width:28px}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:4;width:48px;height:48px;border-radius:50%;border:1px solid rgba(255,255,255,.28);background:rgba(10,28,56,.38);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:.25s}
.hero-arrow:hover{background:var(--green);border-color:var(--green)}
.hero-arrow.prev{left:26px}
.hero-arrow.next{right:26px}
.hero-arrow svg{width:24px;height:24px}
.hero-mask{position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,22,44,.93) 0%,rgba(8,22,44,.72) 45%,rgba(8,22,44,.35) 100%),linear-gradient(0deg,rgba(8,22,44,.85),transparent 40%)}
.hero-inner{position:relative;z-index:2;max-width:760px}
.hero .tag{display:inline-flex;align-items:center;gap:9px;padding:7px 16px;border-radius:999px;background:rgba(47,165,106,.18);border:1px solid rgba(47,214,200,.4);font-size:13.5px;font-weight:500;color:#cdeee8;margin-bottom:26px}
.hero .tag i{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(47,214,200,.25)}
.hero h1{font-size:clamp(26px,2.6vw,36px);font-weight:900;line-height:1.3;letter-spacing:.01em}
@media(min-width:768px){.hero h1{white-space:nowrap}}
.hero h1 .grad{background:linear-gradient(90deg,#7BE3B0,var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.sub{margin-top:22px;font-size:clamp(16px,1.8vw,19px);color:rgba(232,242,248,.86);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.hero-stats{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:64px;padding-top:30px;border-top:1px solid rgba(255,255,255,.14)}
.hstat .num{font-size:clamp(26px,3vw,36px);font-weight:900;color:#fff;line-height:1}
.hstat .num em{font-style:normal;font-size:.55em;font-weight:700;color:var(--cyan);margin-left:2px}
.hstat .lab{margin-top:9px;font-size:13.5px;color:rgba(220,234,242,.72)}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2;font-size:12px;letter-spacing:.2em;color:rgba(255,255,255,.6);display:flex;flex-direction:column;align-items:center;gap:8px}
.scroll-hint i{width:1px;height:34px;background:linear-gradient(var(--cyan),transparent);animation:drop 1.8s infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}55%{transform:scaleY(1);transform-origin:top}56%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
/* ===== About ===== */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.about-lead{font-size:17px;color:var(--ink)}
.about-lead h2{font-size:clamp(26px,3.2vw,36px);font-weight:900;line-height:1.3;margin:12px 0 20px}
.about-lead p{color:var(--muted);margin-bottom:16px}
.about-caps{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:26px}
.acap{display:flex;gap:13px;align-items:flex-start;padding:18px;border:1px solid var(--line);border-radius:14px;background:#fff;transition:.25s}
.acap:hover{border-color:var(--green);box-shadow:var(--shadow-sm);transform:translateY(-3px)}
.acap svg{width:38px;height:38px;flex:none}
.acap b{display:block;font-size:15px;margin-bottom:3px}
.acap span{font-size:13px;color:var(--muted);line-height:1.55}
.about-visual{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--shadow)}
.about-visual img{width:100%;height:460px;object-fit:cover}
.about-visual .float-card{position:absolute;left:22px;bottom:22px;right:22px;background:rgba(10,28,56,.82);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:18px 20px;color:#fff}
.about-visual .float-card b{display:block;font-size:15px}
.about-visual .float-card span{display:block;font-size:13px;color:rgba(232,242,248,.78);margin-top:3px}

/* ===== Features ===== */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.fcard{position:relative;padding:28px 24px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);transition:.3s;overflow:hidden}
.fcard::after{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:linear-gradient(90deg,var(--green),var(--cyan));transform:scaleX(0);transform-origin:left;transition:.35s}
.fcard:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.fcard:hover::after{transform:scaleX(1)}
.fcard .fi{width:50px;height:50px;border-radius:13px;display:flex;align-items:center;justify-content:center;margin-bottom:18px;background:var(--green-l)}
.fcard .fi svg{width:27px;height:27px}
.fcard:nth-child(4n+2) .fi{background:#E7F1FD}
.fcard:nth-child(4n+3) .fi{background:var(--cyan-l)}
.fcard:nth-child(4n) .fi{background:#FBEEDD}
.fcard h3{font-size:17px;font-weight:700;margin-bottom:9px}
.fcard p{font-size:13.5px;color:var(--muted);line-height:1.65}
.fcard .idx{position:absolute;right:18px;top:14px;font-size:34px;font-weight:900;color:#EEF4F1;line-height:1}

/* ===== Architecture ===== */
.arch-wrap{display:grid;grid-template-columns:1fr;gap:0;max-width:980px;margin:0 auto}
.layer{display:grid;grid-template-columns:170px 1fr;gap:22px;align-items:stretch;margin-bottom:14px}
.layer-side{border-radius:14px;padding:20px;display:flex;flex-direction:column;justify-content:center;color:#fff}
.layer-side b{font-size:17px;font-weight:700}
.layer-side span{font-size:12.5px;opacity:.85;margin-top:4px}
.layer-items{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.layer-items.three{grid-template-columns:repeat(3,1fr)}
.li-box{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 10px;text-align:center;font-size:13.5px;font-weight:600;transition:.25s;display:flex;flex-direction:column;align-items:center;gap:8px}
.li-box svg{width:24px;height:24px}
.li-box:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.l1 .layer-side{background:linear-gradient(135deg,#2E7FE0,#1F66B5)}
.l2 .layer-side{background:linear-gradient(135deg,#2FA56A,#1F7E50)}
.l3 .layer-side{background:linear-gradient(135deg,#26C9BC,#179B90)}
.l4 .layer-side{background:linear-gradient(135deg,#13315C,#0A1C38)}
.l1 .li-box svg{color:#2E7FE0}.l2 .li-box svg{color:var(--green-d)}.l3 .li-box svg{color:#179B90}.l4 .li-box svg{color:var(--navy-3)}
.arch-arrow{text-align:center;color:var(--cyan);margin:-6px 0 8px;font-size:18px}
.arch-base{background:linear-gradient(135deg,#13315C,#0A1C38);color:#fff;border-radius:14px;padding:22px;text-align:center;font-weight:700;font-size:16px;letter-spacing:.02em}
.arch-base span{display:block;font-weight:400;font-size:13px;opacity:.78;margin-top:6px}
.arch-note{margin-top:26px;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.anote{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;font-size:13.5px;color:var(--muted)}
.anote b{color:var(--ink);display:block;margin-bottom:5px;font-size:14.5px}
/* ===== Composition / Tabs ===== */
.tabs{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-bottom:44px}
.tab-btn{padding:11px 26px;border-radius:999px;font-weight:600;font-size:15px;color:var(--muted);background:#fff;border:1px solid var(--line);transition:.25s}
.tab-btn:hover{color:var(--green-d)}
.tab-btn.active{background:linear-gradient(135deg,var(--green),var(--green-d));color:#fff;border-color:transparent;box-shadow:0 10px 22px -10px rgba(31,126,80,.5)}
.tab-pane{display:none}
.tab-pane.active{display:block;animation:fade .4s}
@keyframes fade{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.gshot{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#fff;transition:.3s}
.gshot img{width:100%;height:230px;object-fit:cover;object-position:top;transition:.4s}
.gshot:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.gshot:hover img{transform:scale(1.05)}
.gshot figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 14px 12px;background:linear-gradient(0deg,rgba(8,22,44,.9),transparent);color:#fff;font-size:13px;font-weight:600}
.gshot .zoom{display:none}
.gshot .zoom svg{width:18px;height:18px;color:#fff}
.app-gallery{display:grid;grid-template-columns:repeat(5,1fr);gap:22px}
.phone{background:linear-gradient(160deg,#0E2649,#0A1C38);border-radius:26px;padding:12px;box-shadow:var(--shadow)}
.phone .scr{border-radius:18px;overflow:hidden;height:340px;background:#fff}
.phone .scr img{width:100%;height:100%;object-fit:cover;object-position:top}
.phone p{text-align:center;color:rgba(255,255,255,.82);font-size:12.5px;padding:10px 4px 4px;font-weight:500}

/* ===== Video ===== */
.video-sec{position:relative}
.video-frame{position:relative;max-width:1000px;margin:0 auto;border-radius:20px;overflow:hidden;box-shadow:var(--shadow);background:#0A1C38}
.video-frame video{width:100%;display:block;aspect-ratio:16/9;background:#0A1C38}
.video-points{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:34px}
.vpoint{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;text-align:center}
.vpoint b{display:block;font-size:15px;margin-bottom:5px}
.vpoint span{font-size:13px;color:var(--muted)}

/* ===== Partners ===== */
.user-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:54px}
.ucard{display:flex;gap:13px;align-items:center;padding:20px;border-radius:14px;background:#fff;border:1px solid var(--line);transition:.25s}
.ucard:hover{border-color:var(--green);box-shadow:var(--shadow-sm);transform:translateY(-3px)}
.ucard svg{width:34px;height:34px;flex:none;color:var(--green-d)}
.ucard b{font-size:14.5px;display:block;line-height:1.4}
.ucard span{font-size:12px;color:var(--muted)}
.coop-flow{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:step}
.cstep{position:relative;padding:30px 26px;border-radius:16px;background:linear-gradient(150deg,var(--navy-2),var(--navy));color:#fff}
.cstep::before{counter-increment:step;content:"0" counter(step);font-size:30px;font-weight:900;color:var(--cyan);opacity:.85}
.cstep b{display:block;font-size:17px;margin:12px 0 8px}
.cstep p{font-size:13.5px;color:rgba(226,238,245,.75)}

/* ===== Contact ===== */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:start}
.cinfo-cards{display:grid;gap:16px}
.cinfo{display:flex;gap:16px;align-items:center;padding:22px;background:#fff;border:1px solid var(--line);border-radius:14px}
.cinfo .ci-ic{width:48px;height:48px;border-radius:12px;background:var(--green-l);display:flex;align-items:center;justify-content:center;flex:none}
.cinfo .ci-ic svg{width:25px;height:25px;color:var(--green-d)}
.cinfo b{font-size:14px;color:var(--muted);font-weight:500;display:block}
.cinfo .val{font-size:16.5px;font-weight:700;color:var(--ink)}
.ph{color:#9AA9B5;font-weight:600}
.form-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px;box-shadow:var(--shadow-sm)}
.form-card h3{font-size:21px;font-weight:800;margin-bottom:6px}
.form-card>.hint{font-size:13.5px;color:var(--muted);margin-bottom:24px}
.faq-list{background:#fff;border:1px solid var(--line);border-radius:18px;padding:8px 28px 12px;box-shadow:var(--shadow-sm)}
.faq-side{padding:28px 28px 18px}
.faq-side h3{font-size:21px;font-weight:800;margin-bottom:6px}
.faq-side>.hint{font-size:13.5px;color:var(--muted);margin-bottom:8px}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list details:last-of-type{border-bottom:none}
.faq-list summary{cursor:pointer;list-style:none;font-weight:700;font-size:15px;line-height:1.5;padding:15px 28px 15px 0;position:relative;color:var(--ink)}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"";position:absolute;right:6px;top:20px;width:8px;height:8px;border-right:2px solid var(--green-d);border-bottom:2px solid var(--green-d);transform:rotate(45deg);transition:transform .2s}
.faq-list details[open] summary{color:var(--green-d)}
.faq-list details[open] summary::after{transform:rotate(-135deg);top:24px}
.faq-list details p{color:var(--muted);font-size:14.5px;line-height:1.75;padding:0 8px 16px 0}
.faq-more{display:inline-flex;margin-top:14px;font-weight:700;font-size:14.5px;color:var(--green-d)}
.faq-more:hover{color:var(--green)}
.faq-wrap{max-width:860px;margin:0 auto}
.faq-group{margin-top:34px}
.faq-group h2{font-size:22px;font-weight:900;margin:0 0 12px}
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.fgroup{display:flex;flex-direction:column}
.fgroup.full{grid-column:1/-1}
.fgroup label{font-size:13.5px;font-weight:600;margin-bottom:7px}
.fgroup label i{color:#E05A4E;font-style:normal}
.fgroup input,.fgroup select,.fgroup textarea{padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;font-size:14.5px;font-family:inherit;background:#FCFEFD;transition:.2s;color:var(--ink)}
.fgroup textarea{resize:vertical;min-height:104px}
.fgroup input:focus,.fgroup select:focus,.fgroup textarea:focus{border-color:var(--green);background:#fff;outline:none}
.fgroup.err input,.fgroup.err select,.fgroup.err textarea{border-color:#E05A4E;background:#FEF6F5}
.emsg{font-size:12px;color:#E05A4E;margin-top:5px;display:none}
.fgroup.err .emsg{display:block}
.form-foot{margin-top:22px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.form-foot .btn{min-width:150px}
.form-status{font-size:13.5px;font-weight:600}
.form-status.ok{color:var(--green-d)}.form-status.bad{color:#E05A4E}
.spin{width:17px;height:17px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:rot .7s linear infinite}
@keyframes rot{to{transform:rotate(360deg)}}

/* ===== CTA Band ===== */
.cta-band{position:relative;padding:86px 0;color:#fff;text-align:center;overflow:hidden}
.cta-bg{position:absolute;inset:0;background:url("../ai/cta.jpg") center/cover no-repeat}
.cta-mask{position:absolute;inset:0;background:rgba(8,22,44,.72)}
.cta-inner{position:relative;z-index:2}
.cta-band h2{font-size:clamp(24px,3.2vw,35px);font-weight:900}
.cta-band p{margin:13px 0 28px;color:rgba(230,240,246,.86);font-size:16px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ===== Footer ===== */
.footer{background:var(--navy);color:rgba(220,234,242,.75);padding:64px 0 28px}
.fgrid-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer .logo{color:#fff;margin-bottom:16px}
.fabout{font-size:13.5px;max-width:330px;line-height:1.7}
.fcol h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700}
.fcol a{display:block;padding:5px 0;font-size:14px;transition:.2s}
.fcol a:hover{color:var(--cyan)}
.fbottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;padding-top:24px;font-size:13px}
.fbottom a:hover{color:var(--cyan)}

/* ===== Floating / Modal / Lightbox / Toast ===== */
.floating{position:fixed;right:20px;bottom:28px;z-index:90;display:flex;flex-direction:column;gap:11px}
.fab{width:52px;height:52px;border-radius:50%;background:#fff;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center;transition:.25s;position:relative}
.fab svg{width:24px;height:24px;color:var(--green-d)}
.fab:hover{transform:translateY(-3px);background:var(--green);}
.fab:hover svg{color:#fff}
.fab.top{opacity:0;pointer-events:none;transform:translateY(10px)}
.fab.top.show{opacity:1;pointer-events:auto;transform:none}
.fab .tip{position:absolute;right:62px;background:var(--navy);color:#fff;font-size:12.5px;padding:6px 12px;border-radius:8px;white-space:nowrap;opacity:0;pointer-events:none;transition:.2s}
.fab:hover .tip{opacity:1}
.modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:24px}
.modal.open{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(6,16,32,.7);backdrop-filter:blur(4px)}
.modal-box{position:relative;background:#fff;border-radius:18px;padding:34px;max-width:380px;width:100%;text-align:center;animation:pop .3s}
@keyframes pop{from{transform:scale(.92);opacity:0}to{transform:none;opacity:1}}
.modal-close{position:absolute;right:14px;top:12px;width:34px;height:34px;border-radius:8px;display:flex;align-items:center;justify-content:center}
.modal-close svg{width:20px;height:20px;color:var(--muted)}
.modal-close:hover{background:#F0F4F2}
.modal-box h3{font-size:19px;font-weight:800;margin-bottom:8px}
.modal-box>p{font-size:13.5px;color:var(--muted);margin-bottom:20px}
.qr-img{display:block;width:200px;height:200px;margin:0 auto 18px;border-radius:14px;object-fit:contain;background:#fff;border:1px solid var(--line)}
.wx-row{display:flex;align-items:center;justify-content:center;gap:10px;background:var(--bg);border-radius:10px;padding:11px 14px;font-size:14px;font-weight:600}
.wx-row .ph{font-size:14px}
.copy-btn{padding:7px 14px;border-radius:8px;background:var(--green);color:#fff;font-size:13px;font-weight:600}
.copy-btn:hover{background:var(--green-d)}
.lightbox{position:fixed;inset:0;z-index:210;display:none;align-items:center;justify-content:center;padding:30px}
.lightbox.open{display:flex}
.lightbox img{position:relative;max-width:94%;max-height:90vh;border-radius:10px;box-shadow:0 30px 80px -20px #000}
.lb-cap{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);color:#fff;font-size:14px;background:rgba(8,22,44,.7);padding:6px 16px;border-radius:999px}
.lb-close{position:absolute;top:20px;right:24px;width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.14);display:flex;align-items:center;justify-content:center}
.lb-close svg{width:24px;height:24px;color:#fff}
.toast{position:fixed;left:50%;top:88px;transform:translate(-50%,-20px);z-index:300;background:var(--navy);color:#fff;padding:12px 22px;border-radius:999px;font-size:14px;font-weight:600;opacity:0;pointer-events:none;transition:.3s;box-shadow:var(--shadow)}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.ok{background:var(--green-d)}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .user-grid{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .app-gallery{grid-template-columns:repeat(3,1fr)}
  .video-points{grid-template-columns:repeat(2,1fr)}
  .fgrid-top{grid-template-columns:1fr 1fr;gap:28px}
}
@media(max-width:860px){
  .nav,.nav-cta{display:none}.burger{display:flex}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:34px}
  .about-visual img{height:340px}
  .layer{grid-template-columns:1fr;gap:10px}
  .layer-side{padding:14px 18px}
  .layer-items,.layer-items.three{grid-template-columns:repeat(2,1fr)}
  .arch-note,.coop-flow{grid-template-columns:1fr}
  .sec{padding:72px 0}
}
@media(max-width:560px){
  .container{padding:0 18px}
  .feat-grid,.gallery,.user-grid,.app-gallery,.video-points,.fgrid,.about-caps{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:1fr 1fr;gap:22px}
  .form-card,.faq-side,.faq-list{padding-left:20px;padding-right:20px}
  .fgroup input,.fgroup select,.fgroup textarea{font-size:16px}
  .fgrid-top{grid-template-columns:1fr}
  .fbottom{flex-direction:column;align-items:flex-start;gap:8px}
  .floating{right:14px;bottom:18px}
  .gshot img{height:210px}
  .app-gallery{max-width:280px;margin:0 auto}
  .hero-arrow{width:38px;height:38px}
  .hero-arrow.prev{left:10px}
  .hero-arrow.next{right:10px}
  .hero-arrow svg{width:20px;height:20px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto}.reveal{opacity:1;transform:none}}