:root{--brand-navy:#282b34;--brand-teal:#27b8b2;--brand-blue:#4ce0e5;--brand-cyan:#58d8d1;--ink:#23262d;--muted:#5f7188;--line:#dbefee;--surface:#f3fafa;--white:#fff;--shell:1180px;--shadow:0 22px 58px rgba(61,65,78,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#fff;font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;line-height:1.75}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input,select,textarea{font:inherit}.shell{width:min(var(--shell),calc(100% - 48px));margin-inline:auto}.skip-link{position:fixed;z-index:100;top:10px;left:10px;padding:10px 16px;color:#fff;background:var(--brand-blue);transform:translateY(-160%)}.skip-link:focus{transform:none}.eyebrow{display:flex;align-items:center;gap:9px;margin:0 0 16px;color:#148f8a;font-size:13px;font-weight:750;letter-spacing:.14em}.eyebrow::before{width:7px;height:7px;flex:0 0 auto;border-radius:50%;background:var(--brand-teal);box-shadow:0 0 0 4px rgba(39,184,178,.12);content:""}.button{display:inline-flex;min-height:48px;align-items:center;justify-content:center;padding:0 24px;border:1px solid transparent;border-radius:8px;font-weight:700;cursor:pointer;transition:transform .2s,box-shadow .2s,border-color .2s,background .2s}.button-primary{color:#fff;background:linear-gradient(105deg,var(--brand-teal),var(--brand-blue));box-shadow:0 12px 28px rgba(39,184,178,.2)}.button-primary:hover{box-shadow:0 16px 34px rgba(39,184,178,.28);transform:translateY(-2px)}.button-secondary{border-color:rgba(39,184,178,.55);color:var(--brand-navy);background:rgba(255,255,255,.82)}.button-secondary:hover{border-color:var(--brand-teal);background:#effaf9;transform:translateY(-2px)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #42d5ca;outline-offset:4px}
.about-hero{position:relative;min-height:760px;overflow:hidden;padding:154px 0 84px;background:linear-gradient(118deg,#fff 0%,#f7fbfb 45%,#edf9f9 100%)}.about-hero::before{position:absolute;top:85px;right:-110px;width:690px;height:620px;border-radius:50%;background:radial-gradient(circle at 43% 47%,rgba(44,206,196,.24),transparent 36%),radial-gradient(circle at 66% 44%,rgba(76,224,229,.18),transparent 54%),radial-gradient(circle at 74% 26%,rgba(87,214,218,.1),transparent 25%);filter:blur(50px);content:""}.hero-grid-pattern{position:absolute;inset:0;background-image:linear-gradient(rgba(39,184,178,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(39,184,178,.05) 1px,transparent 1px);background-size:88px 88px;mask-image:linear-gradient(to bottom,#000,transparent 84%)}.about-hero-grid{position:relative;display:grid;grid-template-columns:1.02fr .98fr;align-items:center;gap:52px}.about-hero-copy{position:relative;z-index:2}.about-hero h1{margin:0;color:#262830;font-size:clamp(54px,5.4vw,74px);font-weight:800;line-height:1.1;letter-spacing:-.04em}.about-hero h1 span{color:var(--brand-teal)}.hero-subtitle{margin:24px 0 14px;color:#30333d;font-size:22px;font-weight:700}.hero-description{max-width:630px;color:#537e7f;font-size:15px;line-height:1.9}.hero-description p{margin:0 0 10px}.hero-actions{display:flex;gap:14px;margin-top:30px}.about-hero-visual{position:relative;min-height:420px;margin:0}.about-hero-visual::before{position:absolute;inset:5% 0 0;border:1px solid rgba(42,166,170,.12);border-radius:26px;background:rgba(255,255,255,.42);box-shadow:var(--shadow);backdrop-filter:blur(10px);content:""}.about-hero-visual img{position:absolute;z-index:1;top:5%;right:-11%;width:112%;height:90%;object-fit:cover;object-position:75% center;border-radius:26px;filter:saturate(1.15) brightness(1.3) contrast(.82);opacity:.82;mix-blend-mode:multiply;mask-image:linear-gradient(90deg,transparent 0,#000 19%,#000 92%,transparent 100%);animation:hero-float 8s ease-in-out infinite}.about-hero-visual figcaption{position:absolute;z-index:4;right:3%;bottom:2%;display:flex;align-items:center;gap:8px;margin:0;padding:9px 13px;border:1px solid rgba(39,184,178,.25);border-radius:7px;color:#316b6d;background:rgba(255,255,255,.9);box-shadow:0 8px 26px rgba(22,121,124,.12);font-size:12px;font-weight:650}.about-hero-visual figcaption span{width:6px;height:6px;border-radius:50%;background:var(--brand-teal);box-shadow:0 0 0 5px rgba(39,184,178,.12);animation:node-pulse 3.4s ease-in-out infinite}.hero-orbit{position:absolute;z-index:3;inset:15% 4% 10% 12%;border:1px solid rgba(76,224,229,.18);border-radius:50%;transform:rotate(-11deg);pointer-events:none}.hero-orbit i{position:absolute;width:8px;height:8px;border-radius:50%;background:#4ad9d0;box-shadow:0 0 14px #4ad9d0;animation:orbit-point 9s linear infinite}.hero-orbit i:nth-child(2){animation-delay:-3s}.hero-orbit i:nth-child(3){animation-delay:-6s}
.company-section{padding:112px 0;background:#fff}.company-grid{display:grid;grid-template-columns:.88fr 1.12fr;align-items:center;gap:90px}.company-visual{position:relative;min-width:0}.company-visual::before{position:absolute;inset:12% 8%;border-radius:50%;background:radial-gradient(circle,rgba(46,189,185,.2),rgba(75,224,229,.08) 45%,transparent 70%);filter:blur(25px);content:""}.company-visual-frame{position:relative;display:grid;min-height:430px;place-items:center;overflow:hidden;border:1px solid var(--line);border-radius:22px;background:linear-gradient(145deg,#f8fcfc,#eefafa);box-shadow:0 20px 50px rgba(30,127,130,.1)}.company-visual-frame::before{position:absolute;inset:0;background-image:linear-gradient(rgba(39,184,178,.065) 1px,transparent 1px),linear-gradient(90deg,rgba(39,184,178,.065) 1px,transparent 1px);background-size:42px 42px;content:""}.company-visual-frame img{position:relative;z-index:1;width:min(74%,340px);filter:drop-shadow(0 20px 22px rgba(39,141,145,.16));animation:visual-breathe 7s ease-in-out infinite}.visual-scan{position:absolute;z-index:2;right:8%;left:8%;height:1px;background:linear-gradient(90deg,transparent,var(--brand-teal),transparent);box-shadow:0 0 10px rgba(39,184,178,.65);animation:scan-line 7s ease-in-out infinite}.company-copy h2,.section-heading h2,.direction-heading h2,.about-contact h2{margin:0;color:#262830;font-size:clamp(36px,4vw,52px);line-height:1.22;letter-spacing:-.035em}.company-copy>p:not(.eyebrow){margin:20px 0 0;color:var(--muted);font-size:15px}.company-keywords{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin:38px 0 0;padding:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);list-style:none}.company-keywords li{display:flex;align-items:center;gap:10px;padding:20px 10px}.company-keywords li+li{border-left:1px solid var(--line)}.company-keywords span{color:#1aa49f;font-size:11px;font-weight:800}.company-keywords strong{color:#333742;font-size:15px}
.history-section{position:relative;overflow:hidden;padding:112px 0;background:#eef8f8}.history-section::before{position:absolute;top:-170px;left:42%;width:700px;height:430px;border-radius:50%;background:radial-gradient(circle,rgba(77,225,230,.11),transparent 70%);content:""}.section-heading{position:relative;display:grid;grid-template-columns:1.12fr .88fr;align-items:end;gap:60px;margin-bottom:68px}.section-heading .eyebrow{grid-column:1/-1;margin-bottom:-35px}.section-heading>p:last-child{max-width:480px;margin:0 0 5px;color:var(--muted)}.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin:0;padding:0;list-style:none}.timeline::before{position:absolute;z-index:0;top:47px;right:9%;left:9%;height:2px;background:linear-gradient(90deg,rgba(39,184,178,.25),var(--brand-teal),var(--brand-blue),rgba(76,224,229,.3));content:""}.timeline::after{position:absolute;z-index:0;top:46px;left:9%;width:22%;height:4px;border-radius:99px;background:linear-gradient(90deg,transparent,#78f1e9,transparent);filter:blur(.5px);animation:timeline-flow 8s linear infinite;content:""}.timeline li{position:relative;z-index:1}.timeline-node{position:relative;display:grid;width:96px;height:96px;place-items:center;margin:0 auto 26px;border:1px solid rgba(76,224,229,.18);border-radius:50%;background:rgba(255,255,255,.86);box-shadow:0 12px 28px rgba(32,120,123,.09)}.timeline-node::before,.timeline-node::after{position:absolute;border:1px solid rgba(39,184,178,.16);border-radius:50%;content:""}.timeline-node::before{inset:9px}.timeline-node::after{inset:-7px}.timeline-node span{position:absolute;inset:-7px;border:2px solid transparent;border-top-color:rgba(39,184,178,.58);border-right-color:rgba(76,224,229,.4);border-radius:50%;animation:node-rotate 14s linear infinite}.timeline-node img{position:relative;width:45px;height:45px;object-fit:contain}.timeline-copy{min-height:230px;padding:26px 24px;border:1px solid rgba(33,129,132,.12);border-radius:13px;background:rgba(255,255,255,.76);transition:transform .25s,border-color .25s,box-shadow .25s}.timeline li:hover .timeline-copy{border-color:rgba(39,184,178,.38);box-shadow:0 18px 40px rgba(31,122,125,.11);transform:translateY(-5px)}.timeline-copy small{color:#168f8a;font-size:11px;font-weight:800;letter-spacing:.11em}.timeline-copy h3{margin:8px 0 10px;color:#2e313a;font-size:20px}.timeline-copy p{margin:0;color:#61758a;font-size:14px;line-height:1.8}
.direction-section{position:relative;overflow:hidden;padding:112px 0;background:linear-gradient(135deg,#f9fdfd 0%,#eef8f7 48%,#f1fbfb 100%)}.direction-section::after{position:absolute;right:-100px;bottom:-220px;width:520px;height:520px;border-radius:50%;background:rgba(70,223,229,.09);filter:blur(80px);content:""}.direction-heading{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:64px}.direction-heading .eyebrow{grid-column:1/-1;margin-bottom:-30px}.direction-heading>div p{margin:0 0 16px;color:var(--muted);font-size:15px}.direction-flow{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin:58px 0 0;padding:0;list-style:none}.direction-flow::before{position:absolute;top:50%;right:10%;left:10%;height:1px;background:linear-gradient(90deg,rgba(39,184,178,.3),rgba(76,224,229,.35));content:""}.direction-flow li{position:relative;display:flex;min-height:148px;align-items:center;gap:18px;padding:30px;border:1px solid rgba(39,147,151,.13);border-radius:14px;background:rgba(255,255,255,.82);box-shadow:0 12px 32px rgba(60,64,76,.07);transition:transform .25s,border-color .25s}.direction-flow li:hover{border-color:rgba(39,184,178,.4);transform:translateY(-4px)}.direction-flow li>span{display:grid;width:42px;height:42px;flex:0 0 auto;place-items:center;border-radius:50%;color:#fff;background:linear-gradient(135deg,var(--brand-teal),var(--brand-blue));font-size:11px;font-weight:800;box-shadow:0 0 0 7px rgba(39,184,178,.08)}.direction-flow strong{font-size:21px}.direction-flow p{margin:5px 0 0;color:var(--muted);font-size:14px}
.about-contact{padding:92px 0;background:#fff}.contact-panel{position:relative;display:grid;grid-template-columns:1fr auto;align-items:center;gap:72px;overflow:hidden;padding:58px 64px;border:1px solid rgba(39,184,178,.2);border-radius:18px;background:linear-gradient(115deg,#eefaf8 0%,#f3fbfb 64%,#effafa 100%);box-shadow:0 20px 48px rgba(62,67,80,.08)}.contact-panel::before{position:absolute;top:-120px;right:-80px;width:340px;height:340px;border:1px solid rgba(76,224,229,.12);border-radius:50%;box-shadow:0 0 0 42px rgba(39,184,178,.035),0 0 0 84px rgba(76,224,229,.025);content:""}.about-contact h2{font-size:clamp(34px,3.7vw,48px)}.about-contact p:not(.eyebrow){max-width:730px;margin:18px 0 0;color:var(--muted)}.contact-actions{position:relative;z-index:1;display:grid;gap:12px;min-width:218px}.contact-actions .button{width:100%}
.demo-dialog{width:min(760px,calc(100% - 32px));max-height:min(760px,calc(100vh - 32px));overflow:auto;padding:34px;border:1px solid #d7edec;border-radius:12px;color:#2c2f37;background:#fff;box-shadow:0 30px 90px rgba(16,17,21,.42)}.demo-dialog::backdrop{background:rgba(13,14,17,.75);backdrop-filter:blur(3px)}.dialog-close{position:absolute;top:18px;right:20px;width:38px;height:38px;border:0;border-radius:50%;color:#527e80;background:#edf6f6;font-size:24px;line-height:1;cursor:pointer}.dialog-kicker{margin:0 0 8px;color:#11827d;font-size:12px;font-weight:750;letter-spacing:.12em}.demo-dialog h2{margin:0;padding-right:42px;color:#272931;font-size:30px;line-height:1.3}.demo-dialog>p:not(.dialog-kicker){margin:10px 0 22px;color:#62778b;font-size:14px}.demo-form{display:grid;grid-template-columns:1fr 1fr;gap:16px 18px}.demo-form label{display:grid;gap:6px;color:#346163;font-size:13px;font-weight:650}.demo-form input,.demo-form select,.demo-form textarea{width:100%;min-height:44px;padding:10px 12px;border:1px solid #cee4e3;border-radius:7px;color:#2c2f37;background:#fff;font-size:14px}.demo-form textarea{min-height:82px;resize:vertical}.field-wide{grid-column:1/-1}.form-status{min-height:22px;margin:0;color:#167a76;font-size:13px;font-weight:650}
[data-reveal]{transition:opacity .7s ease,transform .7s ease}[data-reveal].reveal-pending{opacity:0;transform:translateY(22px)}[data-reveal].reveal-visible{opacity:1;transform:none}
@keyframes hero-float{0%,100%{transform:translateY(-4px)}50%{transform:translateY(7px)}}@keyframes node-pulse{0%,100%{box-shadow:0 0 0 4px rgba(39,184,178,.1)}50%{box-shadow:0 0 0 9px rgba(39,184,178,0)}}@keyframes orbit-point{0%{top:50%;left:0}25%{top:0;left:50%}50%{top:50%;left:calc(100% - 8px)}75%{top:calc(100% - 8px);left:50%}100%{top:50%;left:0}}@keyframes visual-breathe{0%,100%{transform:translateY(-3px);filter:drop-shadow(0 18px 20px rgba(39,141,145,.13))}50%{transform:translateY(5px);filter:drop-shadow(0 24px 28px rgba(39,184,178,.21))}}@keyframes scan-line{0%,100%{top:22%;opacity:0}14%,84%{opacity:.65}50%{top:78%}}@keyframes timeline-flow{from{transform:translateX(-60%)}to{transform:translateX(360%)}}@keyframes node-rotate{to{transform:rotate(360deg)}}
@media(max-width:1024px){.about-hero{min-height:auto;padding-bottom:72px}.about-hero-grid{grid-template-columns:1fr;gap:34px}.about-hero-copy{max-width:760px}.about-hero-visual{min-height:390px}.about-hero-visual img{right:0;width:100%}.company-grid{grid-template-columns:.86fr 1.14fr;gap:50px}.timeline{grid-template-columns:1fr 1fr}.timeline::before,.timeline::after{display:none}.timeline-copy{min-height:190px}.direction-heading{grid-template-columns:1fr;gap:24px}.direction-heading .eyebrow{margin-bottom:-8px}.contact-panel{grid-template-columns:1fr;gap:32px}.contact-actions{grid-template-columns:repeat(2,1fr);min-width:0}}
@media(max-width:768px){.shell{width:calc(100% - 40px)}.about-hero{padding-top:136px}.about-hero h1{font-size:52px}.hero-subtitle{font-size:19px}.about-hero-visual{min-height:320px}.company-section,.history-section,.direction-section{padding:84px 0}.company-grid{grid-template-columns:1fr;gap:42px}.company-visual{order:2}.company-visual-frame{min-height:360px}.section-heading{grid-template-columns:1fr;gap:20px;margin-bottom:48px}.section-heading .eyebrow{margin-bottom:-6px}.direction-flow{grid-template-columns:1fr}.direction-flow::before{top:10%;bottom:10%;left:51px;width:1px;height:auto}.direction-flow li{min-height:118px}.contact-panel{padding:46px 38px}}
@media(max-width:520px){.shell{width:calc(100% - 32px)}.about-hero{padding-top:128px}.about-hero h1{font-size:43px;letter-spacing:-.045em}.hero-subtitle{margin-top:18px;font-size:18px}.hero-description{font-size:14px}.hero-actions{align-items:stretch;flex-direction:column}.hero-actions .button{width:100%}.about-hero-visual{min-height:255px}.about-hero-visual img{height:88%;object-position:72% center}.about-hero-visual figcaption{right:2%;bottom:0;font-size:11px}.company-section,.history-section,.direction-section{padding:68px 0}.company-copy h2,.section-heading h2,.direction-heading h2,.about-contact h2{font-size:32px}.company-visual-frame{min-height:300px}.company-keywords{grid-template-columns:1fr}.company-keywords li+li{border-top:1px solid var(--line);border-left:0}.timeline{grid-template-columns:1fr;gap:24px}.timeline li{display:grid;grid-template-columns:72px 1fr;align-items:start;gap:16px}.timeline-node{width:72px;height:72px;margin:0}.timeline-node img{width:36px;height:36px}.timeline-copy{min-height:0;padding:22px 20px}.direction-flow{margin-top:40px}.direction-flow::before{left:51px}.about-contact{padding:64px 0}.contact-panel{padding:38px 22px}.contact-actions{grid-template-columns:1fr}.demo-dialog{padding:28px 18px}.demo-dialog h2{font-size:25px}.demo-form{grid-template-columns:1fr;gap:13px}.field-wide{grid-column:auto}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button,[data-reveal]{transition:none}.about-hero-visual img,.about-hero-visual figcaption span,.hero-orbit i,.company-visual-frame img,.visual-scan,.timeline::after,.timeline-node span{animation:none}.hero-orbit i{display:none}[data-reveal].reveal-pending{opacity:1;transform:none}}

/* 2026 关于我们内容结构 */
.about-hero{min-height:720px;padding-top:146px}.about-hero-grid{grid-template-columns:1.12fr .88fr}.about-hero h1{max-width:720px;font-size:clamp(44px,4.6vw,66px);line-height:1.16}.hero-description{max-width:700px}.hero-description p{margin-bottom:12px}.about-hero-visual{min-height:390px}
.history-section{padding-bottom:124px}.timeline-viewport{overflow-x:auto;padding:2px 2px 18px;scrollbar-color:rgba(39,184,178,.5) rgba(31,117,120,.08);scrollbar-width:thin}.timeline-viewport:focus-visible{border-radius:10px;outline:3px solid #42d5ca;outline-offset:5px}.timeline{grid-template-columns:repeat(7,220px);gap:22px;width:max-content;min-width:100%;padding:2px 8px 16px}.timeline::before{right:7%;left:7%}.timeline::after{left:7%;width:14%}.timeline-copy{width:220px;min-height:244px;padding:24px 20px}.timeline-copy h3{font-size:18px;line-height:1.45}.timeline-copy small{font-size:13px}.timeline-node{width:88px;height:88px;animation:timeline-node-pulse 4.8s ease-in-out infinite}.timeline li:nth-child(even) .timeline-node{animation-delay:-2.4s}.timeline-node img{width:42px;height:42px}
.qualifications-section{position:relative;overflow:hidden;padding:116px 0;background:linear-gradient(135deg,#292c34 0%,#393d48 42%,#177578 120%)}.qualifications-section::before{position:absolute;inset:0;background-image:linear-gradient(rgba(127,226,218,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(127,226,218,.06) 1px,transparent 1px);background-size:52px 52px;mask-image:linear-gradient(90deg,#000,transparent 76%);content:""}.qualification-layout{position:relative;display:grid;grid-template-columns:.72fr 1.28fr;gap:58px}.qualification-heading{align-self:start}.qualification-heading .eyebrow{color:#76ddd6}.qualification-heading h2{margin:0;color:#fff;font-size:clamp(36px,4vw,50px);line-height:1.25;letter-spacing:-.035em}.qualification-heading>p:last-of-type{margin:22px 0 0;color:#c4e8e7}.qualification-visual{position:relative;margin:42px 0 0;padding:24px;border:1px solid rgba(130,226,219,.18);border-radius:18px;background:rgba(255,255,255,.06);box-shadow:0 20px 50px rgba(19,20,24,.18)}.qualification-visual img{width:min(76%,300px);margin:auto;filter:brightness(1.16) drop-shadow(0 16px 22px rgba(46,220,207,.18));animation:visual-breathe 8s ease-in-out infinite}.qualification-visual figcaption{margin-top:18px;color:#b9e3e2;font-size:12px;letter-spacing:.12em;text-align:center}.qualification-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.qualification-card{position:relative;min-height:192px;padding:26px 26px 24px;border:1px solid rgba(171,231,229,.2);border-radius:14px;background:rgba(250,253,253,.94);box-shadow:0 16px 42px rgba(16,17,21,.12);transition:transform .25s,border-color .25s,box-shadow .25s}.qualification-card:hover{border-color:rgba(88,216,209,.75);box-shadow:0 21px 48px rgba(16,17,21,.2);transform:translateY(-4px)}.qualification-card-featured{background:linear-gradient(145deg,#e9fffc,#f6fdfc)}.qualification-card-wide{grid-column:1/-1;min-height:154px}.qualification-index{margin:0;color:#1c9f99;font-size:12px;font-weight:800;letter-spacing:.12em}.qualification-card h3{margin:10px 0 10px;color:#2c2f39;font-size:20px;line-height:1.35}.qualification-card>p:last-of-type{margin:0;color:#5b7084;font-size:14px;line-height:1.85}.qualification-tag{position:absolute;top:24px;right:22px;padding:4px 9px;border-radius:4px;color:#177d78;background:#dff7f4;font-size:11px;font-weight:700}
.direction-section{background:linear-gradient(135deg,#fff 0%,#eef8f7 48%,#effafa 100%)}.direction-heading h2{max-width:700px}.direction-flow li{min-height:160px}.direction-flow strong{color:#2c2f39}
@media(max-width:1024px){.about-hero-grid{grid-template-columns:1fr}.qualification-layout{grid-template-columns:1fr;gap:42px}.qualification-heading{display:grid;grid-template-columns:1fr .7fr;gap:0 40px}.qualification-heading .eyebrow,.qualification-heading h2,.qualification-heading>p{grid-column:1}.qualification-visual{grid-column:2;grid-row:1/5;margin:0}.qualification-visual img{width:min(82%,260px)}}
@media(max-width:768px){.about-hero{padding-top:132px}.timeline-viewport{overflow:visible;padding:0}.timeline{grid-template-columns:1fr;width:auto;min-width:0;padding:0}.timeline li{display:grid;grid-template-columns:76px 1fr;gap:18px}.timeline::before{display:block;top:42px;bottom:42px;left:45px;width:2px;height:auto;background:linear-gradient(180deg,var(--brand-teal),var(--brand-blue),rgba(76,224,229,.22))}.timeline::after{display:block;top:42px;left:44px;width:4px;height:15%;animation:timeline-flow-mobile 8s linear infinite}.timeline-copy{width:auto;min-height:0}.qualification-heading{display:block}.qualification-visual{max-width:420px;margin:36px auto 0}.qualification-cards{grid-template-columns:1fr}.qualification-card-wide{grid-column:auto}}
@media(max-width:520px){.about-hero{min-height:auto}.about-hero h1{font-size:39px}.about-hero-visual{min-height:240px}.history-section,.qualifications-section{padding:70px 0}.timeline li{grid-template-columns:68px 1fr;gap:14px}.timeline::before{left:41px}.timeline::after{left:40px}.timeline-node{width:68px;height:68px}.timeline-node img{width:34px;height:34px}.timeline-copy{padding:20px 18px}.qualification-heading h2{font-size:32px}.qualification-visual{padding:18px}.qualification-card{min-height:0;padding:23px 20px}.qualification-tag{position:static;display:inline-block;margin-top:16px}.direction-heading h2 br{display:none}}
@keyframes timeline-flow{from{transform:translateX(-100%)}to{transform:translateX(650%)}}@keyframes timeline-flow-mobile{from{transform:translateY(-70%)}to{transform:translateY(560%)}}@keyframes timeline-node-pulse{0%,100%{box-shadow:0 12px 28px rgba(32,120,123,.09),0 0 0 0 rgba(39,184,178,.14)}50%{box-shadow:0 15px 34px rgba(32,120,123,.13),0 0 0 10px rgba(39,184,178,0)}}
@media(prefers-reduced-motion:reduce){.qualification-visual img,.timeline::after,.timeline-node{animation:none}.qualification-card{transition:none}}

/* 单栏首屏：突出公司介绍，右侧不再设置效果图 */
.about-hero{
  display:flex;
  min-height:580px;
  align-items:center;
  padding:118px 0 42px;
  background:
    radial-gradient(circle at 18% 20%,rgba(39,184,178,.1),transparent 28%),
    radial-gradient(circle at 82% 68%,rgba(76,224,229,.1),transparent 32%),
    linear-gradient(128deg,#f8fdfd 0%,#effafa 54%,#edfaf9 100%);
}
.about-hero::before{
  top:42px;
  right:-210px;
  width:610px;
  height:520px;
  opacity:.52;
}
.hero-grid-pattern{
  background-image:url("../assets/reference/www.guance.com/banner-4d9e2fd630.png");
  background-position:center 108px;
  background-repeat:no-repeat;
  background-size:2748px 396px;
  opacity:.68;
}
.about-hero-grid{display:block;width:min(var(--shell),calc(100% - 48px))}
.about-hero-copy{max-width:900px;text-align:left}
.about-hero .eyebrow{justify-content:flex-start;margin-bottom:14px}
.about-hero h1{
  max-width:900px;
  font-size:clamp(42px,4.15vw,58px);
  line-height:1.16;
  letter-spacing:-.035em;
}
.about-hero h1 span{display:block;color:inherit;white-space:nowrap}
.hero-description{
  display:block;
  max-width:860px;
  margin:24px 0 0;
  color:#4e7879;
  font-size:15px;
  line-height:1.82;
  text-align:left;
}
.hero-description p{margin:0 0 8px}
.hero-description p:last-child{margin-bottom:0}
.hero-description p:first-child{
  color:#306163;
  font-size:15px;
}
.hero-actions{justify-content:flex-start;margin-top:28px}
.about-hero .button-primary{min-width:176px}

@media(max-width:1024px){
  .about-hero{min-height:560px;padding:116px 0 38px}
  .about-hero-grid{width:min(var(--shell),calc(100% - 48px))}
}
@media(max-width:768px){
  .about-hero{min-height:550px;padding:120px 0 44px}
  .about-hero-grid{width:calc(100% - 40px)}
  .about-hero h1{font-size:clamp(38px,6.8vw,48px)}
  .hero-description{max-width:680px;font-size:14px;line-height:1.8}
  .hero-description p:first-child{font-size:14px}
}
@media(max-width:520px){
  .about-hero{min-height:560px;padding:116px 0 42px}
  .about-hero-grid{width:calc(100% - 32px)}
  .about-hero h1{font-size:clamp(32px,9vw,40px);line-height:1.2}
  .hero-description{margin-top:20px;font-size:14px;line-height:1.75}
  .hero-actions{align-items:flex-start;margin-top:24px}
  .hero-actions .button{width:auto;min-width:168px}
}

/* 关于我们信息统一按“标题一行、说明一行”纵向阅读 */
.section-heading,
.direction-heading{
  display:block;
}
.section-heading .eyebrow,
.direction-heading .eyebrow{
  margin-bottom:16px;
}
.section-heading h2,
.direction-heading h2{
  display:block;
  max-width:900px;
}
.section-heading>p:last-child,
.direction-heading>div{
  display:block;
  max-width:760px;
  margin-top:20px;
}
.section-heading>p:last-child{
  margin-bottom:0;
}
.direction-heading>div p{
  margin:0;
}
.timeline-copy h3,
.timeline-copy p,
.direction-flow strong,
.direction-flow p,
.about-contact h2,
.about-contact p:not(.eyebrow){
  display:block;
}

@media(max-width:768px){
  .section-heading,
  .direction-heading{
    display:block;
  }
  .section-heading .eyebrow,
  .direction-heading .eyebrow{
    margin-bottom:14px;
  }
  .section-heading>p:last-child,
  .direction-heading>div{
    margin-top:16px;
  }
}

/* 公司资质与技术积累：仅展示资质类别，不公开证书明细 */
.credentials-section{
  position:relative;
  overflow:hidden;
  padding:112px 0;
  background:#fff;
}
.credentials-section::before{
  position:absolute;
  top:-230px;
  right:-190px;
  width:560px;
  height:560px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(39,184,178,.1),transparent 68%);
  content:"";
  pointer-events:none;
}
.credentials-heading{
  position:relative;
  max-width:900px;
}
.credentials-heading h2{
  margin:0;
  color:#262830;
  font-size:clamp(36px,4vw,52px);
  line-height:1.22;
  letter-spacing:-.035em;
}
.credentials-heading>p:last-child{
  max-width:760px;
  margin:20px 0 0;
  color:var(--muted);
}
.credential-grid{
  position:relative;
  display:grid;
  grid-template-columns:repeat(6,minmax(0,1fr));
  gap:18px;
  margin:52px 0 0;
  padding:0;
  list-style:none;
}
.credential-item{
  min-width:0;
  padding:28px 18px 24px;
  border:1px solid #dcefee;
  border-radius:14px;
  background:linear-gradient(180deg,#fff,#f8fcfc);
  box-shadow:0 12px 32px rgba(60,64,76,.07);
  text-align:center;
  transition:border-color .2s,box-shadow .2s,transform .2s;
}
.credential-item:hover{
  border-color:rgba(39,184,178,.46);
  box-shadow:0 18px 38px rgba(60,64,76,.11);
  transform:translateY(-3px);
}
.credential-mark{
  display:grid;
  width:112px;
  height:112px;
  place-items:center;
  margin:0 auto 20px;
}
.credential-mark img{
  width:100%;
  height:100%;
  object-fit:contain;
}
.credential-logo{
  height:112px;
}
.credential-logo-wide{
  width:136px;
}
.credential-logo-seal{
  width:108px;
}
.credential-wordmark{
  position:relative;
  width:112px;
  height:112px;
  border:1px solid rgba(27,175,180,.18);
  border-radius:18px;
  background:linear-gradient(145deg,rgba(32,185,190,.08),rgba(39,184,178,.13));
  color:#179fa4;
}
.credential-wordmark span{
  position:relative;
  z-index:1;
  max-width:76px;
  font-size:18px;
  font-weight:700;
  line-height:1.35;
  letter-spacing:.06em;
}
.credential-item h3{
  margin:0;
  color:#2e313a;
  font-size:17px;
  line-height:1.5;
}
.credential-item>p{
  margin:6px 0 0;
  color:#687b8d;
  font-size:12px;
  line-height:1.65;
}
.credentials-note{
  margin:26px 0 0;
  padding-left:15px;
  border-left:3px solid var(--brand-teal);
  color:#5f7188;
  font-size:14px;
}

@media(max-width:1024px){
  .credential-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(max-width:768px){
  .credentials-section{padding:84px 0}
  .credential-grid{gap:14px;margin-top:42px}
}
@media(max-width:620px){
  .credentials-section{padding:68px 0}
  .credentials-heading h2{font-size:32px}
  .credential-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:36px}
  .credential-item{padding:22px 12px 20px}
  .credential-mark{width:88px;height:88px;margin-bottom:16px}
  .credential-logo{height:88px}
  .credential-logo-wide{width:104px}
  .credential-logo-seal{width:86px}
  .credential-wordmark span{max-width:64px;font-size:15px}
  .credential-item h3{font-size:15px}
  .credentials-note{font-size:13px}
}
@media(prefers-reduced-motion:reduce){
  .credential-item{transition:none}
  .credential-item:hover{transform:none}
}