:root{--navy:#0f2a44;--navy-2:#16395c;--slate:#475569;--slate-l:#94a3b8;--line:#e2e8f0;--bg:#f6f8fb;--ink:#1e293b;--accent:#1f9e90;--accent-d:#157a6f;--wa:#1faa53;--r:10px;--max:1160px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:"Noto Sans HK","PingFang HK","Microsoft JhengHei",sans-serif;color:var(--ink);line-height:1.75;background:#fff;font-size:16px}
img,svg{max-width:100%}a{color:var(--accent-d)}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:#fff;padding:8px;z-index:99}
/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:saturate(1.5) blur(6px)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy)}
.brand svg,.brand-mark{width:44px;height:44px;flex:none;border-radius:10px;object-fit:contain;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text b{font-size:19px;letter-spacing:.08em;font-weight:700}
.brand-text small{font-size:10.5px;letter-spacing:.18em;color:var(--slate);font-weight:500}
.menu{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.menu a{display:block;padding:8px 12px;text-decoration:none;color:var(--ink);font-size:15px;border-radius:6px;font-weight:500}
.menu a:hover{background:var(--bg)}
.menu a[aria-current=page]{color:var(--accent-d);box-shadow:inset 0 -2px 0 var(--accent)}
.menu .btn{margin-left:8px;color:#fff}
.menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;width:44px;height:44px;cursor:pointer}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--navy);margin:4px auto}
@media (max-width:960px){
 .menu-toggle{display:block}
 .menu{display:none;position:absolute;top:72px;left:0;right:0;flex-direction:column;align-items:stretch;background:#fff;border-bottom:1px solid var(--line);padding:10px 20px 18px;box-shadow:0 10px 20px rgba(15,42,68,.08)}
 .menu.open{display:flex}.menu a{padding:12px}.menu .btn{margin:8px 0 0;text-align:center}
}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:8px;font-weight:600;text-decoration:none;border:2px solid transparent;font-size:15px;cursor:pointer;font-family:inherit;transition:.15s}
.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-d)}
.btn-wa{background:var(--wa);color:#fff}.btn-wa:hover{filter:brightness(.92)}
.btn-ghost{border-color:rgba(255,255,255,.5);color:#fff}.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-outline{border-color:var(--navy);color:var(--navy)}.btn-outline:hover{background:var(--navy);color:#fff}
.btn svg{width:18px;height:18px}
/* hero */
.hero,.page-hero{position:relative;color:#fff;background-color:var(--navy);overflow:hidden}
.blueprint{background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(135deg,#0f2a44 0%,#16395c 100%);background-size:80px 80px,80px 80px,16px 16px,16px 16px,100% 100%}
.hero{padding:96px 0 104px}
.hero-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:48px;align-items:center}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:.2em;color:#7fd6cb;font-weight:600;margin-bottom:14px}
.hero h1{font-size:clamp(32px,4.6vw,50px);line-height:1.3;margin:0 0 20px;font-weight:700;letter-spacing:.02em}
.hero p.lead{font-size:18px;color:#cbd5e1;margin:0 0 32px;max-width:36em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-art svg{width:100%;height:auto;display:block}
.page-hero{padding:64px 0 60px}
.page-hero h1{font-size:clamp(28px,3.6vw,40px);margin:0 0 10px;line-height:1.35}
.page-hero p{color:#cbd5e1;margin:0;max-width:44em;font-size:17px}
.crumbs{font-size:13px;color:#94a3b8;margin-bottom:12px}.crumbs a{color:#cbd5e1;text-decoration:none}
@media (max-width:860px){.hero-grid{grid-template-columns:1fr}.hero-art{display:none}.hero{padding:64px 0 72px}}
/* sections */
section.block{padding:80px 0}section.alt{background:var(--bg)}
.sec-head{max-width:720px;margin:0 0 44px}.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head .en{font-size:12px;letter-spacing:.22em;color:var(--accent-d);font-weight:700;text-transform:uppercase}
.sec-head h2{font-size:clamp(24px,3vw,32px);margin:6px 0 12px;color:var(--navy);line-height:1.4}
.sec-head p{color:var(--slate);margin:0}
.grid{display:grid;gap:24px}.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
@media (max-width:960px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}section.block{padding:56px 0}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px;transition:.2s}
.card:hover{box-shadow:0 12px 28px rgba(15,42,68,.08);transform:translateY(-2px)}
.card h3{margin:14px 0 8px;color:var(--navy);font-size:20px}
.card p{margin:0;color:var(--slate)}
.card ul{margin:12px 0 0;padding-left:1.2em;color:var(--slate)}
.card .more{display:inline-block;margin-top:16px;font-weight:600;text-decoration:none}
.icon{width:52px;height:52px;border-radius:12px;background:#e6f5f3;display:grid;place-items:center;color:var(--accent-d)}
.icon svg{width:28px;height:28px}
.num{font-size:13px;font-weight:700;color:var(--accent-d);letter-spacing:.1em}
/* features */
.feature{display:flex;gap:16px;align-items:flex-start}
.feature .icon{flex:none;width:44px;height:44px}.feature .icon svg{width:22px;height:22px}
.feature h3{margin:0 0 4px;font-size:18px;color:var(--navy)}.feature p{margin:0;color:var(--slate)}
/* steps */
.steps{counter-reset:s;display:grid;gap:20px;grid-template-columns:repeat(5,1fr);list-style:none;padding:0;margin:0}
.steps li{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px 20px}
.steps li::before{counter-increment:s;content:counter(s,decimal-leading-zero);display:block;font-weight:700;color:var(--accent);font-size:26px;line-height:1;margin-bottom:10px}
.steps h3{margin:0 0 6px;font-size:17px;color:var(--navy)}.steps p{margin:0;color:var(--slate);font-size:14.5px}
.steps.s4{grid-template-columns:repeat(4,1fr)}
@media (max-width:960px){.steps,.steps.s4{grid-template-columns:1fr 1fr}}@media (max-width:560px){.steps,.steps.s4{grid-template-columns:1fr}}
/* timeline */
.timeline{position:relative;padding-left:28px;border-left:2px solid var(--line)}
.year{position:relative;margin-bottom:44px}
.year::before{content:"";position:absolute;left:-38px;top:6px;width:18px;height:18px;border-radius:50%;background:#fff;border:4px solid var(--accent)}
.year h2{margin:0 0 16px;font-size:26px;color:var(--navy)}
.proj{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:16px 18px}
.proj svg{flex:none;width:22px;height:22px;color:var(--accent-d);margin-top:3px}
.proj span{font-weight:500}
/* placeholder */
.ph{border:2px dashed #d97706;background:#fffbeb;color:#92400e;border-radius:8px;padding:14px 16px;font-size:14.5px;font-weight:600}
.ph small{display:block;font-weight:400;color:#a16207;margin-top:2px}
.ph-inline{display:inline-block;border:1.5px dashed #d97706;background:#fffbeb;color:#92400e;border-radius:6px;padding:0 8px;font-size:.9em;font-weight:600}
.site-footer .ph-inline{background:rgba(217,119,6,.12);color:#fcd34d;border-color:#f59e0b}
/* callout / cta */
.cta-band{border-radius:14px;padding:44px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;color:#fff}
.cta-band h2{margin:0 0 6px;font-size:26px}.cta-band p{margin:0;color:#cbd5e1}
.cta-band .actions{display:flex;gap:12px;flex-wrap:wrap}
.quote{border-left:4px solid var(--accent);padding:6px 0 6px 20px;font-size:20px;color:var(--navy);font-weight:600;margin:0}
.prose p{color:var(--slate);margin:0 0 16px}.prose h3{color:var(--navy);margin:28px 0 8px}
.two{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:start}@media (max-width:860px){.two{grid-template-columns:1fr;gap:32px}}
.tag{display:inline-block;background:#e6f5f3;color:var(--accent-d);font-size:13px;font-weight:600;border-radius:999px;padding:2px 12px;margin:0 6px 6px 0}
.highlight{background:var(--navy);color:#fff;border-radius:var(--r);padding:28px}
.highlight h3{margin:0 0 8px;color:#fff}.highlight p{color:#cbd5e1;margin:0}
/* contact */
.contact-list{list-style:none;padding:0;margin:0;display:grid;gap:18px}
.contact-list li{display:flex;gap:14px;align-items:flex-start}
.contact-list .icon{width:44px;height:44px;flex:none}.contact-list .icon svg{width:22px;height:22px}
.contact-list b{display:block;color:var(--navy);font-size:14px}
.contact-list a{font-size:17px;font-weight:600;text-decoration:none}
.map{border:0;width:100%;height:360px;border-radius:var(--r);display:block;background:var(--bg)}
form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media (max-width:560px){form .row{grid-template-columns:1fr}}
label{display:block;font-weight:600;font-size:14px;color:var(--navy);margin:0 0 6px}
label .opt{color:var(--slate-l);font-weight:400}label .req{color:#dc2626}
input,textarea,select{width:100%;padding:12px 14px;border:1px solid #cbd5e1;border-radius:8px;font:inherit;font-size:16px;background:#fff;margin-bottom:16px}
input:focus,textarea:focus{outline:2px solid var(--accent);border-color:transparent}
.form-note{font-size:13px;color:var(--slate);margin-top:10px}
/* footer */
.site-footer{background:#0b1f33;color:#cbd5e1;padding:56px 0 24px;font-size:15px}
.site-footer a{color:#e2e8f0;text-decoration:none}.site-footer a:hover{color:#7fd6cb}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}@media (max-width:860px){.foot-grid{grid-template-columns:1fr}}
.site-footer h4{color:#fff;margin:0 0 14px;font-size:15px;letter-spacing:.08em}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.site-footer .brand{color:#fff;margin-bottom:14px}.site-footer .brand-text small{color:#94a3b8}
.copy{border-top:1px solid rgba(255,255,255,.1);margin-top:40px;padding-top:20px;font-size:13px;color:#94a3b8;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
/* floating wa */
.wa-float{position:fixed;right:20px;bottom:20px;width:56px;height:56px;border-radius:50%;background:var(--wa);display:grid;place-items:center;box-shadow:0 8px 20px rgba(0,0,0,.2);z-index:60}
.wa-float svg{width:30px;height:30px;color:#fff}
.demo-banner{background:#fef3c7;color:#92400e;text-align:center;font-size:13px;padding:6px 12px;border-bottom:1px solid #fcd34d}