:root{--navy:#07182c;--navy2:#0b2442;--blue:#278bff;--cyan:#00c8f2;--ink:#122844;--muted:#5f7189;--light:#f4f8fd}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,'PingFang SC','Microsoft YaHei',sans-serif;color:var(--ink);background:#fff}a{text-decoration:none;color:inherit}button{font:inherit}.site-header{height:84px;padding:0 clamp(24px,5vw,90px);position:absolute;z-index:10;top:0;left:0;width:100%;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #ffffff28;color:#fff}.brand{font-family:Arial,Arial,sans-serif;font-size:29px;font-weight:800;letter-spacing:-2.1px;position:relative;line-height:1;color:inherit}.brand-a{color:#42b7ff}.brand-o{letter-spacing:-3px}.brand-dot{position:absolute;background:#00d5f5;width:7px;height:7px;border-radius:50%;right:25px;top:0}.nav{display:flex;gap:38px}.nav a{font-size:11px;font-weight:700;letter-spacing:2px;color:#e4f1ff;transition:color .2s}.nav a:hover{color:var(--cyan)}.menu-toggle{display:none}.hero{height:100svh;min-height:670px;position:relative;background:#061425;color:#fff;overflow:hidden}.hero-video,.hero-overlay{position:absolute;inset:0;width:100%;height:100%}.hero-video{object-fit:cover}.hero-overlay{background:linear-gradient(90deg,rgba(4,14,29,.91) 0%,rgba(4,17,33,.74) 43%,rgba(4,17,33,.30) 100%),linear-gradient(0deg,rgba(4,14,29,.55),transparent 28%)}.hero-content{position:absolute;top:50%;left:clamp(24px,8vw,150px);transform:translateY(-42%);max-width:850px}.eyebrow{letter-spacing:3px;font-size:11px;font-weight:700;color:#85d9ff}.pulse{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 14px var(--cyan);margin-right:9px}.hero h1,.section h2,.statement h2{font-family:Arial,'Arial',sans-serif;letter-spacing:-.055em;font-weight:800}.hero h1{font-size:clamp(52px,6.8vw,112px);line-height:1.05;margin:27px 0 24px}.hero h1 em{font-style:normal;color:#45b5ff}.hero-sub{color:#d2e1f0;line-height:1.9;font-size:15px;letter-spacing:1px}.outline-btn{margin-top:30px;display:inline-flex;gap:48px;align-items:center;border:1px solid #ffffff85;padding:16px 20px;font-size:11px;font-weight:700;letter-spacing:2px;transition:background .2s}.outline-btn:hover{background:#ffffff22}.outline-btn span{font-size:20px}.hero-bottom{position:absolute;bottom:32px;left:clamp(24px,5vw,90px);right:clamp(24px,5vw,90px);display:flex;justify-content:space-between;font-size:10px;letter-spacing:2px;color:#d4e2f2}.section{padding:115px clamp(24px,8vw,150px)}.section-label{font-size:11px;letter-spacing:2.5px;font-weight:800;display:flex;align-items:center;gap:13px;color:#3188da}.line{width:26px;height:1px;background:currentColor}.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:10%;margin-top:60px}.section h2{font-size:clamp(38px,4.7vw,74px);line-height:1.12;margin:0}.section h2 span{color:#328df1}.intro-copy{max-width:580px;padding-top:8px}.intro-copy p{line-height:2.15;font-size:15px;color:#52657a;margin:0 0 23px}.signature{margin-top:40px;padding-top:24px;border-top:1px solid #dce7f1;font-size:11px;letter-spacing:1.6px;color:#8ca2b8}.signature strong{color:#1a5c9b}.expertise{background:#f3f7fc}.section-heading{display:flex;justify-content:space-between;align-items:end;margin-top:60px;margin-bottom:60px;gap:20px}.section-heading p{font-size:14px;color:#6c7d91}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#d8e4f1;border:1px solid #d8e4f1}.feature{background:#fff;min-height:385px;padding:36px;display:flex;flex-direction:column}.feature-index{font-size:11px;color:#86a4c1;letter-spacing:2px}.feature-icon{margin:34px 0 22px;color:#278bff}.feature-icon svg{width:52px;height:52px}.feature h3{font-family:Arial,sans-serif;font-size:23px;letter-spacing:-.8px;line-height:1.2;margin:0 0 18px}.feature p{font-size:13px;line-height:2;color:#61758a;margin:0 0 28px}.feature-foot{font-size:10px;letter-spacing:1.4px;color:#3497eb;margin-top:auto}.statement{position:relative;overflow:hidden;background:radial-gradient(ellipse at 78% 50%,#0d3762 0%,#07192f 54%,#061326 100%);padding:110px clamp(24px,8vw,150px) 125px;color:#fff}.statement-glow{position:absolute;width:650px;height:650px;border:1px solid #2089c530;border-radius:50%;right:-130px;top:0;box-shadow:0 0 0 65px #2089c50a,0 0 0 145px #2089c508}.statement-inner{position:relative;margin-top:85px}.statement h2{font-size:clamp(41px,5.7vw,90px);line-height:1.13;margin:20px 0 32px}.statement h2 em{font-style:normal;color:#3fa9ff}.statement-inner>p:last-of-type{color:#bdcee1;font-size:15px;line-height:2}.signal{display:flex;gap:7px;align-items:center;height:60px;margin-top:52px}.signal span{width:3px;height:18px;background:#26a6ed;border-radius:5px;opacity:.7}.signal span:nth-child(3n){height:43px}.signal span:nth-child(4n){height:30px}.signal span:nth-child(5n){height:55px}.contact{padding-bottom:115px}.contact-grid{display:flex;justify-content:space-between;gap:45px;align-items:end;margin-top:60px}.contact-grid p{font-size:15px;line-height:2;color:#687b90;margin-top:24px}.contact-link{white-space:nowrap;border-bottom:1px solid #247cd1;padding-bottom:16px;font-size:12px;font-weight:800;letter-spacing:1.4px;color:#176db9}.contact-link span{font-size:22px;margin-left:40px}.contact-note{font-size:11px;color:#9aa9b9;margin-top:65px}footer{background:#061527;color:#d7e7f6;padding:55px clamp(24px,8vw,150px) 26px}.footer-top,.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px}.footer-top>span,.footer-top>a:last-child{font-size:10px;letter-spacing:2px}.footer-bottom{border-top:1px solid #ffffff2a;margin-top:58px;padding-top:24px;font-size:10px;letter-spacing:.5px;color:#8ea6be}.footer-brand{font-size:28px}
@media(max-width:760px){.site-header{height:70px;padding:0 24px}.menu-toggle{display:flex;flex-direction:column;gap:6px;border:0;background:none;padding:12px;cursor:pointer}.menu-toggle span{display:block;width:25px;height:2px;background:#fff}.nav{display:none;position:absolute;top:70px;left:0;right:0;background:#07182cf7;padding:30px 24px;flex-direction:column;gap:26px}.nav.open{display:flex}.hero{min-height:680px}.hero-overlay{background:linear-gradient(90deg,rgba(4,14,29,.88),rgba(4,14,29,.55)),linear-gradient(0deg,rgba(4,14,29,.6),transparent 45%)}.hero-content{left:25px;right:20px;transform:translateY(-40%)}.hero h1{font-size:clamp(43px,10.5vw,75px)}.hero-bottom{left:25px;right:25px;font-size:8px}.hero-bottom span:last-child{display:none}.section{padding:80px 25px}.intro-grid{grid-template-columns:1fr;gap:28px;margin-top:38px}.intro-copy p{font-size:14px}.section-heading{display:block;margin:38px 0}.section-heading p{margin-top:20px}.feature-grid{grid-template-columns:1fr}.feature{min-height:320px}.statement{padding:80px 25px 90px}.statement-inner{margin-top:55px}.statement h2{font-size:clamp(36px,9vw,60px)}.contact-grid{display:block;margin-top:40px}.contact-link{display:inline-flex;margin-top:35px}.footer-top,.footer-bottom{align-items:flex-start;flex-wrap:wrap}.footer-top>span{display:none}.footer-bottom{line-height:2}.contact-note{margin-top:50px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.hero-video{display:none}}

.brand-image{display:block;width:175px;max-width:40vw;height:auto;filter:brightness(0) invert(1)}.footer-brand .brand-image{width:175px}@media(max-width:760px){.brand-image{width:140px}}

.hero{background:linear-gradient(90deg,rgba(4,14,29,.92),rgba(4,17,33,.45)),url('assets/poster.jpg') center/cover no-repeat,#061425}
.video-page{background:#061527;color:#fff;min-height:100vh}.video-shell{max-width:1380px;margin:0 auto;padding:140px clamp(20px,6vw,80px) 90px}.video-kicker{color:#64c9ff;font-size:12px;letter-spacing:3px}.video-title{font:800 clamp(42px,6vw,85px)/1.1 Arial,Arial,sans-serif;letter-spacing:-.05em;margin:24px 0}.video-title span{color:#45b5ff}.video-desc{color:#b7c9dc;line-height:1.8;margin:0 0 35px}.film{width:100%;height:auto;display:block;background:#000;aspect-ratio:910/512;box-shadow:0 30px 90px #0007}.video-note{font-size:12px;color:#9ab1c7;line-height:1.9;margin-top:20px}.back-link{display:inline-block;margin-top:35px;color:#75caff;letter-spacing:1.5px;font-size:12px}.video-page .site-header{position:absolute}@media(max-width:760px){.video-shell{padding-top:120px}.video-title{font-size:44px}}
/* V4: restrained, legible homepage with no low-resolution image enlargement */
.hero{background:radial-gradient(ellipse at 78% 44%,rgba(31,103,173,.25),transparent 44%),linear-gradient(130deg,#061323 0%,#0b2340 100%);min-height:640px}
.hero-overlay{display:none}.hero-content{left:clamp(26px,9vw,160px);max-width:900px;transform:translateY(-40%)}
.hero h1{font-size:clamp(48px,5.1vw,78px);line-height:1.14;letter-spacing:-.045em;margin:25px 0 24px}
.hero-sub{font-size:16px}.hero-bottom{opacity:.65}
.hero:after{content:'';position:absolute;right:8%;top:29%;width:min(25vw,340px);aspect-ratio:1;border:1px solid rgba(67,167,238,.12);border-radius:50%;box-shadow:0 0 0 55px rgba(39,139,255,.025),0 0 0 115px rgba(39,139,255,.018);pointer-events:none}
.video-shell{max-width:1120px}.film{max-width:910px;margin-inline:auto;box-shadow:0 20px 65px #0005}.video-title{font-size:clamp(38px,4.8vw,66px)}
@media(max-width:760px){.hero{min-height:650px}.hero h1{font-size:clamp(39px,9.2vw,57px);line-height:1.13}.hero:after{right:-25%;width:70vw}.hero-content{left:25px;right:22px}.hero-bottom{bottom:24px}.video-title{font-size:40px}}

/* Updated original 1080P video */
.video-page .film{max-width:1080px;aspect-ratio:16/9;object-fit:contain}

/* language switcher */
.lang-switch{display:inline-flex;align-items:center;gap:6px;font-size:10px;font-weight:700;letter-spacing:1px;color:#8ab4dd;margin-left:8px}
.lang-cur{color:#fff;border-bottom:1px solid var(--cyan)}
.lang-link{color:#8ab4dd;transition:color .2s;text-decoration:none}
.lang-link:hover{color:var(--cyan)}
@media(max-width:760px){.lang-switch{margin-left:0;margin-top:4px}}
.hero-bottom{justify-content:flex-end}