.site-logo--horizontal{display:flex;align-items:center;gap:14px}.site-logo__wide{display:block;width:190px;height:62px;object-fit:contain;object-position:left center;background:transparent;flex:none}.site-logo__tagline{position:relative;padding-left:14px;color:#3a5a70;font-size:13px;font-weight:650;letter-spacing:.04em;line-height:1.2;white-space:nowrap}.site-logo__tagline:before{content:"";position:absolute;left:0;top:50%;width:1px;height:28px;margin-top:-14px;background:#b9d5e4}.site-footer .site-logo__wide{width:220px;height:88px}.site-footer .site-logo__tagline{display:none}

/* 浅色导航：与天空蓝页面形成层次，保证文字清晰 */
.site-header,.site-header--scrolled,.site-header.site-header--solid{color:#101820;background:rgba(244,250,253,.96);border-bottom:1px solid #d7e8f1;box-shadow:0 5px 22px rgba(38,116,160,.1);backdrop-filter:blur(18px)}.site-nav__link{position:relative;color:#314957;padding:8px 0;transition:color .2s ease}.site-nav__link:hover{color:#3279bd}.site-nav__link.is-active{color:#3279bd;font-weight:800}.site-nav__link.is-active:after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:linear-gradient(90deg,#51b9e9,#3279bd)}.site-nav__cta{color:#fff}.site-nav__toggle-icon span{background:#17232d}
.section{padding:48px 0}
main [id]{scroll-margin-top:112px}

.kicker{display:flex;align-items:center;justify-content:center;gap:16px;width:100%;padding:0;margin-bottom:22px;border:0;background:transparent;color:#276fa8;font-size:18px;line-height:1.4;font-weight:800;letter-spacing:.1em;text-align:center;box-shadow:none}.kicker:before,.kicker:after{content:'';flex:0 1 82px;height:2px;border-radius:999px;background:linear-gradient(90deg,rgba(60,159,218,0),#3c9fda);box-shadow:0 1px 4px rgba(39,111,168,.22)}.kicker:after{background:linear-gradient(90deg,#3c9fda,rgba(60,159,218,0))}.journey .kicker,.cta .kicker{color:#fff;background:transparent}.journey .kicker:before,.cta .kicker:before{background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.9));box-shadow:0 1px 5px rgba(255,255,255,.22)}.journey .kicker:after,.cta .kicker:after{background:linear-gradient(90deg,rgba(255,255,255,.9),rgba(255,255,255,0));box-shadow:0 1px 5px rgba(255,255,255,.22)}

.experience__copy h2,.section-heading h2{font-size:clamp(26px,2.5vw,36px);line-height:1.32;letter-spacing:-.02em}
.section-heading{margin-bottom:28px}
.section-more{display:flex;justify-content:flex-end;margin:18px 0 0}
.platform#service{padding-bottom:0}.platform#service>.container:last-child{padding:16px 0 36px}
.experience#platform{padding-top:36px;padding-bottom:36px}
#roles{padding-top:36px;padding-bottom:20px}#about{padding-top:20px}
.about-contact{display:flex;align-items:center;justify-content:space-between;gap:30px;margin-top:20px;padding:22px 26px;border:1px solid #d8e8f1;border-radius:18px;background:#f3f9fc}.about-contact span,.about-contact strong{display:block}.about-contact span{margin-bottom:6px;color:#3279bd;font-size:13px;font-weight:800;letter-spacing:.08em}.about-contact strong{font-size:18px}.about-contact>div>p{max-width:520px;margin:12px 0 0;color:#587386;line-height:1.7}.about-contact__details{display:flex;align-items:center;gap:18px}.about-contact__links{display:flex;align-items:center;gap:12px}.about-contact__links a{padding:10px 14px;border:1px solid #c8e1ee;border-radius:10px;background:#fff;color:#276fa8;font-size:14px;font-weight:700}.about-contact__links a:hover{border-color:#45a9e6}.about-contact__qr{flex:none;width:132px;margin:0;text-align:center}.about-contact__qr img{display:block;width:100%;aspect-ratio:1;object-fit:contain;border:6px solid #fff;border-radius:12px;box-shadow:0 8px 24px rgba(50,121,189,.14)}.about-contact__qr figcaption{margin-top:7px;color:#587386;font-size:12px}

/* 企业微信合作弹窗 */
.modal-open{overflow:hidden}
.wechat-modal{position:fixed;z-index:200;inset:0;display:grid;place-items:center;padding:28px;background:rgba(7,20,30,.72);backdrop-filter:blur(6px)}
.wechat-modal[hidden]{display:none}
.wechat-modal__card{position:relative;width:min(420px,calc(100vw - 40px));max-height:calc(100dvh - 40px)}
.wechat-modal__card img{display:block;width:100%;max-height:calc(100dvh - 40px);object-fit:contain;border-radius:20px;box-shadow:0 28px 80px rgba(0,0,0,.34)}
.wechat-modal__close{position:absolute;z-index:2;top:12px;right:12px;display:grid;place-items:center;width:42px;height:42px;padding:0;border:1px solid rgba(255,255,255,.72);border-radius:50%;background:rgba(0,55,122,.72);color:#fff;font-size:30px;line-height:1;cursor:pointer;box-shadow:0 8px 22px rgba(0,0,0,.2)}
.wechat-modal__close:hover{background:#075dbb}

/* 流程线止于首尾节点中心，四列节点与文字统一居中 */
.journey__line:before{left:12.5%;right:12.5%}
.journey__line article{padding:0 18px;text-align:center}
.journey__line b{margin:0 auto}
@media(min-width:961px){
  .journey__line:before{top:46px}
  .journey__line b{width:92px;height:92px;padding-bottom:24px;box-sizing:border-box;font-size:20px}
  .journey__line article>span{position:absolute;z-index:2;top:54px;left:0;right:0;margin:0;color:#fff;font-size:12px;line-height:1.2}
}

/* 首屏动态无人机 */
.hero-drone{--drone-x:0px;--drone-y:0px;position:absolute;z-index:1;top:16%;right:14%;width:min(43vw,580px);aspect-ratio:1;pointer-events:none;transform:translate3d(var(--drone-x),var(--drone-y),0);transition:transform .25s ease-out}
.hero-drone__orbit{position:absolute;inset:8%;border:1px solid rgba(50,121,189,.2);border-radius:50%;animation:drone-orbit 22s linear infinite}.hero-drone__orbit:before,.hero-drone__orbit:after{content:'';position:absolute;width:9px;height:9px;border-radius:50%;background:#45a9e6;box-shadow:0 0 0 7px rgba(69,169,230,.1),0 0 24px rgba(50,121,189,.5)}.hero-drone__orbit:before{top:13%;left:16%}.hero-drone__orbit:after{right:8%;bottom:23%}.hero-drone__orbit--inner{inset:21%;border-style:dashed;border-color:rgba(50,121,189,.18);animation-duration:16s;animation-direction:reverse}.hero-drone__orbit--inner:before{top:auto;bottom:-4px;left:50%;width:7px;height:7px}.hero-drone__orbit--inner:after{display:none}
.hero-drone__stage{position:absolute;inset:27% 15%;animation:drone-float 5s ease-in-out infinite}.hero-drone__shadow{position:absolute;left:22%;right:22%;bottom:-12%;height:13%;border-radius:50%;background:rgba(35,111,160,.19);filter:blur(14px);animation:drone-shadow 5s ease-in-out infinite}.drone-model{position:absolute;inset:0;filter:drop-shadow(0 24px 22px rgba(50,121,189,.22));transform:perspective(700px) rotateX(58deg) rotateZ(-8deg);animation:drone-tilt 7s ease-in-out infinite}.drone-model__arm{position:absolute;z-index:1;top:47%;left:13%;width:74%;height:14px;border:1px solid rgba(255,255,255,.9);border-radius:999px;background:linear-gradient(180deg,#fff,#a8d9ed 65%,#4b91c4);box-shadow:0 5px 12px rgba(40,111,160,.2)}.drone-model__arm--a{transform:rotate(28deg)}.drone-model__arm--b{transform:rotate(-28deg)}
.drone-model__body{position:absolute;z-index:3;top:31%;left:35%;width:30%;height:40%;border:2px solid rgba(255,255,255,.94);border-radius:48% 48% 42% 42% / 34% 34% 66% 66%;background:linear-gradient(145deg,#fff 4%,#d9f1fa 48%,#4d9bd0 100%);box-shadow:inset -8px -10px 18px rgba(43,115,165,.18),0 12px 26px rgba(50,121,189,.22)}.drone-model__body:before{content:'';position:absolute;left:27%;right:27%;top:12%;height:48%;border-radius:50%;background:linear-gradient(160deg,#3b87bd,#173f61);box-shadow:inset 0 2px 5px rgba(255,255,255,.32)}.drone-model__body span{position:absolute;left:35%;bottom:-12%;width:30%;height:24%;border-radius:4px 4px 50% 50%;background:#214d6b;box-shadow:inset 0 3px #66c7e7}.drone-model__light{position:absolute;z-index:2;left:50%;top:22%;width:6px;height:6px;margin-left:-3px;border-radius:50%;background:#30d5b1;box-shadow:0 0 10px 3px rgba(48,213,177,.65)}
.drone-model__rotor{position:absolute;z-index:2;width:27%;aspect-ratio:1;border:2px solid rgba(50,121,189,.42);border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.8) 0 8%,rgba(83,182,226,.13) 9% 48%,transparent 50%);box-shadow:inset 0 0 18px rgba(69,169,230,.13),0 0 18px rgba(50,121,189,.12)}.drone-model__rotor i{position:absolute;left:7%;right:7%;top:46%;height:8%;border-radius:100%;background:linear-gradient(90deg,transparent,#3279bd 25%,#fff 50%,#3279bd 75%,transparent);animation:drone-rotor .32s linear infinite}.drone-model__rotor--tl{left:0;top:3%}.drone-model__rotor--tr{right:0;top:3%}.drone-model__rotor--bl{left:0;bottom:3%}.drone-model__rotor--br{right:0;bottom:3%}.drone-model__rotor--tr i,.drone-model__rotor--bl i{animation-direction:reverse}
.hero-drone__node{position:absolute;padding:8px 13px;border:1px solid rgba(75,157,207,.25);border-radius:999px;background:rgba(255,255,255,.76);color:#276fa8;font-size:12px;font-weight:750;letter-spacing:.06em;box-shadow:0 10px 25px rgba(50,121,189,.12);backdrop-filter:blur(8px);animation:drone-node 4s ease-in-out infinite}.hero-drone__node:before{content:'';display:inline-block;width:6px;height:6px;margin-right:7px;border-radius:50%;background:#40a9e3;box-shadow:0 0 0 4px rgba(64,169,227,.12)}.hero-drone__node--maintenance{top:15%;left:2%}.hero-drone__node--order{top:25%;right:0;animation-delay:-1s}.hero-drone__node--parts{right:3%;bottom:17%;animation-delay:-2s}.hero-drone__node--progress{left:4%;bottom:20%;animation-delay:-3s}
@keyframes drone-float{0%,100%{transform:translateY(-8px)}50%{transform:translateY(14px)}}@keyframes drone-shadow{0%,100%{transform:scale(.78);opacity:.12}50%{transform:scale(1);opacity:.23}}@keyframes drone-tilt{0%,100%{transform:perspective(700px) rotateX(58deg) rotateZ(-8deg)}50%{transform:perspective(700px) rotateX(55deg) rotateZ(4deg)}}@keyframes drone-rotor{to{transform:rotate(360deg)}}@keyframes drone-orbit{to{transform:rotate(360deg)}}@keyframes drone-node{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}

@media(max-width:900px){
  main [id]{scroll-margin-top:96px}
  .site-logo__wide{width:142px;height:46px}
  .site-logo__tagline{padding-left:10px;font-size:11px;letter-spacing:.02em}
  .site-logo__tagline:before{height:22px;margin-top:-11px}
  .site-footer .site-logo__wide{width:196px;height:78px}
  .site-nav{inset:78px 12px auto;max-height:calc(100dvh - 90px);padding:8px 16px 16px;overflow-y:auto;background:#fff;border:1px solid #d7e8f1;border-radius:16px;box-shadow:0 18px 45px rgba(34,103,145,.2)}
  .site-nav__link,.site-nav__link:hover{display:flex;align-items:center;min-height:48px;padding:0 4px;color:#314957;border-bottom:1px solid #e2edf3;font-size:16px;line-height:1.2}
  .site-nav__dropdown{display:block;border-bottom:1px solid #e2edf3}
  .site-nav__dropdown .site-nav__link--trigger{width:100%;border-bottom:0}
  .site-nav__caret{display:none}
  .site-nav__submenu{display:block;padding:0 0 8px 16px}
  .site-nav__sublink{min-height:44px;display:flex;align-items:center;padding:8px 4px;font-size:15px;color:#587386;text-decoration:none}
  .site-nav__sublink.is-active{color:#3279bd;font-weight:800}
  .site-nav__link.is-active{color:#3279bd;border-bottom-color:#3279bd;font-weight:800}
  .site-nav__link.is-active:after{display:none}
  .site-nav__cta{min-height:48px;margin:12px 0 0;padding:0 20px;border-radius:10px;text-align:center}
  .nav-open .site-nav__toggle-icon span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-open .site-nav__toggle-icon span:nth-child(2){opacity:0}
  .nav-open .site-nav__toggle-icon span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .site-nav__toggle-icon span{transition:transform .2s,opacity .2s}
  .kicker{gap:12px;font-size:16px}
  .kicker:before,.kicker:after{flex-basis:46px}
  .experience__copy h2,.section-heading h2{font-size:26px;line-height:1.36}
  .hero-drone{top:25%;right:1%;width:min(58vw,500px);opacity:.36}
  .hero-drone__node{display:none}
}

@media(max-width:560px){
  .site-logo__tagline{display:none}
  .hero,.hero__inner{min-height:1120px}
  .hero-drone{display:block;top:auto;right:auto;bottom:190px;left:50%;width:min(82vw,320px);opacity:.78;transform:translateX(-50%);transition:none}
  .hero-drone__orbit--outer{inset:10%}
  .hero-drone__stage{inset:27% 15%}
  .role-tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;overflow:visible}
  .role-tabs button{min-width:0;padding:10px 4px;border-radius:12px;font-size:14px;line-height:1.2;white-space:nowrap}
  .platform#solution{padding-bottom:18px}
  .experience#platform{padding-top:18px}
  .section-more{margin-top:16px}
  .about-contact{align-items:flex-start;flex-direction:column;padding:20px}
  .about-contact__details{align-items:stretch;flex-direction:column;width:100%}
  .about-contact__links{align-items:stretch;flex-direction:column;width:100%}
  .about-contact__links a{text-align:center}
  .about-contact__qr{width:min(58vw,210px);margin:4px auto 0}
  .wechat-modal{padding:16px}
  .wechat-modal__card{width:min(88vw,390px)}
  .wechat-modal__close{top:10px;right:10px;width:38px;height:38px;font-size:26px}
}
@media(max-width:760px){.section{padding:44px 0}#roles{padding-bottom:14px}#about{padding-top:14px}}
@media(prefers-reduced-motion:reduce){.hero-drone,.hero-drone *{animation:none!important;transition:none!important}}