:root {
  color-scheme: light;
  --ink: #17252b;
  --ink-2: #314148;
  --paper: #f6f2e9;
  --white: #fff;
  --rust: #c6633e;
  --rust-dark: #9d472a;
  --line: #d8d1c5;
  --muted: #6e7778;
  --max: 1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;line-height:1.7}
body::before{content:"";position:fixed;left:0;top:0;width:0;height:3px;background:var(--rust);z-index:200;opacity:0;transition:width .25s ease,opacity .2s ease}
body.nav-loading::before{width:72%;opacity:1}
body.nav-ready::before{width:100%;opacity:0}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:.6rem 1rem;z-index:100}.skip:focus{left:1rem;top:1rem}
.topbar{background:var(--ink);color:#e9e5dc;font-size:.84rem}
.topbar .inner{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.inner{width:min(var(--max),calc(100% - 40px));margin:auto}
header{position:sticky;top:0;z-index:40;background:rgba(246,242,233,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(23,37,43,.12)}
.nav{min-height:76px;display:flex;align-items:center;gap:2.2rem}
.brand{display:flex;align-items:center;gap:.72rem;font-weight:900;white-space:nowrap}
.brand-mark{display:grid;place-items:center;width:38px;height:38px;background:var(--ink);color:white;border-radius:10px;font-size:1.05rem}
.brand span small{display:block;color:var(--muted);font-size:.66rem;font-weight:600;letter-spacing:.08em}
.nav-links{display:flex;align-items:center;gap:1.55rem;margin-left:auto;font-size:.93rem;font-weight:700}
.nav-links a:hover,.nav-links a:focus{color:var(--rust)}
.nav-cta,.btn{border:0;border-radius:999px;padding:.78rem 1.22rem;font-weight:800;display:inline-flex;align-items:center;justify-content:center;gap:.45rem;cursor:pointer}
.nav-cta,.btn.primary{background:var(--rust);color:#fff}.nav-cta:hover,.btn.primary:hover{background:var(--rust-dark)}
.menu{display:none;border:1px solid var(--line);border-radius:10px;background:transparent;padding:.6rem}
.hero{position:relative;min-height:670px;isolation:isolate;background:#17252b;overflow:hidden}
.hero-media{position:absolute;inset:0;z-index:-2;width:100%;height:100%;object-fit:cover}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(10,20,24,.94) 0%,rgba(10,20,24,.79) 42%,rgba(10,20,24,.2) 72%,rgba(10,20,24,.06) 100%)}
.hero-content{min-height:670px;display:flex;align-items:center;padding:88px 0}
.hero-copy{width:min(650px,62%);color:white}
.eyebrow{display:inline-flex;align-items:center;gap:.55rem;color:#f5c4ac;font-weight:800;font-size:.84rem;letter-spacing:.08em;text-transform:uppercase}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--rust)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(2.7rem,6vw,5.3rem);line-height:1.06;letter-spacing:-.045em;margin:.8rem 0 1.35rem}
.hero-copy>p{font-size:1.12rem;max-width:590px;color:#e8eceb;margin-bottom:2rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.8rem}.btn{min-height:48px}.btn.ghost{color:#fff;border:1px solid rgba(255,255,255,.42);background:rgba(255,255,255,.08)}
.proof{margin-top:2.6rem;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid rgba(255,255,255,.24);padding-top:1.3rem;gap:1.2rem}
.proof strong{font-size:1.4rem;display:block}.proof span{font-size:.82rem;color:#cfd7d6}
.concept-label{position:absolute;right:24px;bottom:18px;color:#fff;background:rgba(23,37,43,.75);padding:.35rem .7rem;border-radius:5px;font-size:.75rem}
.section{padding:92px 0}.section.dark{background:var(--ink);color:#fff}.section.white{background:#fff}
.section-head{display:flex;justify-content:space-between;gap:2rem;align-items:end;margin-bottom:2.3rem}
.section-head h2{font-size:clamp(2rem,4vw,3.4rem);line-height:1.15;letter-spacing:-.035em;max-width:720px;margin:.45rem 0 0}
.section-head p{max-width:460px;color:var(--muted);margin:0}.dark .section-head p{color:#b9c3c3}
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.service-card{background:#fff;border:1px solid var(--line);padding:1.45rem;min-height:235px;display:flex;flex-direction:column;transition:.2s ease}
.service-card:hover{transform:translateY(-4px);border-color:var(--rust)}
.service-no{font-size:.75rem;color:var(--rust);font-weight:900;letter-spacing:.12em}
.service-card h3{font-size:1.35rem;line-height:1.3;margin:1.5rem 0 .65rem}.service-card p{color:var(--muted);font-size:.92rem}
.service-link{margin-top:auto;font-weight:800;color:var(--rust)}
.quote-strip{display:grid;grid-template-columns:1.05fr .95fr;gap:0;background:#fff;border:1px solid var(--line)}
.quote-copy{padding:3rem}.quote-copy h2{font-size:clamp(2rem,4vw,3.3rem);line-height:1.12;margin:.5rem 0 1rem}
.checks{display:grid;gap:.85rem;padding:0;margin:1.5rem 0 0;list-style:none}.checks li{display:flex;gap:.75rem;align-items:flex-start}.checks b{color:var(--rust)}
.quote-sample{background:var(--ink);color:white;padding:2.2rem}
.quote-row{display:grid;grid-template-columns:1.2fr .8fr .55fr;gap:.7rem;padding:.9rem 0;border-bottom:1px solid rgba(255,255,255,.14);font-size:.88rem}
.quote-row.head{color:#aab7b8;font-size:.74rem;text-transform:uppercase;letter-spacing:.08em}.quote-note{font-size:.78rem;color:#9ba7a7;margin:1.1rem 0 0}
.footer{background:#0d171b;color:#c4cecd;padding:2.7rem 0 6rem}.footer-grid{display:grid;grid-template-columns:1.35fr .85fr .85fr 1.25fr;gap:2rem}.footer h3{color:#fff}.footer a{display:block;margin:.4rem 0}.footer small{color:#879596}.footer address{font-style:normal;color:#9caaa9;font-size:.85rem;line-height:1.75}.footer-contact p{margin:.25rem 0;color:#9caaa9}.footer-phone{font-size:1.18rem;font-weight:900;color:#fff}
.sub-hero{background:var(--ink);color:#fff;padding:68px 0 78px;border-bottom:6px solid var(--rust)}
.sub-hero h1{max-width:900px;font-size:clamp(2.45rem,6vw,5rem);margin:.7rem 0 1rem}.sub-hero p{max-width:740px;font-size:1.08rem;color:#c8d0d0}
.crumbs{display:flex;gap:.55rem;color:#9eabab;font-size:.82rem;margin-bottom:2.6rem}.crumbs a:hover{color:#fff}
.narrow{max-width:930px}.answer{border-left:5px solid var(--rust);background:#fff;padding:1.45rem 1.6rem;margin-bottom:4rem;box-shadow:0 12px 34px rgba(23,37,43,.07)}
.answer strong{color:var(--rust);font-size:.78rem;letter-spacing:.1em}.answer p{font-size:1.24rem;line-height:1.65;margin:.35rem 0 0;font-weight:700}
.content-head{margin:0 0 2rem}.content-head h2{font-size:clamp(2rem,4vw,3.1rem);line-height:1.18;margin:.5rem 0}.content-head>p{color:var(--muted);max-width:720px}
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}.info-card{background:#fff;border:1px solid var(--line);padding:1.5rem;min-height:190px}.info-card>span{color:var(--rust);font-size:.75rem;font-weight:900;letter-spacing:.12em}.info-card h3{font-size:1.25rem;margin:1rem 0 .55rem}.info-card p{font-size:.91rem;color:var(--muted)}
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}.steps li{border-top:1px solid #59676a;padding:1.25rem 0}.steps li>span{color:#e88d68;font-size:.76rem;font-weight:900}.steps h3{margin:1.2rem 0 .5rem}.steps p{color:#b9c3c3;font-size:.9rem}
.inline-banner{display:flex;justify-content:space-between;gap:1rem;padding:1.2rem 1.35rem;background:var(--ink);color:#fff}.inline-banner b{color:#ef9b78}
.faq-list{border-top:1px solid var(--line)}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{padding:1.3rem 2.4rem 1.3rem 0;cursor:pointer;list-style:none;position:relative;font-size:1.04rem;font-weight:800}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary::after{content:"＋";position:absolute;right:.2rem;color:var(--rust)}.faq-list details[open] summary::after{content:"−"}.faq-list details p{margin:0;padding:0 2.4rem 1.4rem 0;color:var(--muted)}.faq-full summary{display:flex;gap:.9rem}.faq-full summary span{color:var(--rust);font-size:.78rem;margin-top:.2rem}
.cta-band{background:#d8a17e;padding:66px 0}.cta-band .inner{display:flex;align-items:end;justify-content:space-between;gap:2rem}.cta-band h2{font-size:clamp(2rem,4vw,3.4rem);line-height:1.15;margin:.5rem 0}.cta-band p{margin:0;max-width:670px}.cta-band .eyebrow{color:#5b2414}.cta-band .eyebrow::before{background:#5b2414}
.dark-btn{background:var(--ink);color:#fff}.center{text-align:center;margin-top:2rem}.text-link{color:var(--rust);font-weight:800}
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line)}table{border-collapse:collapse;width:100%;min-width:660px}th,td{text-align:left;padding:1rem;border-bottom:1px solid var(--line);vertical-align:top}th{background:#e9e3d9;font-size:.8rem;letter-spacing:.05em}td:first-child{font-weight:800}
.empty-evidence{background:var(--ink);color:#fff;padding:2.2rem;margin-top:2rem}.empty-evidence>span,.profile-placeholder>div>span{color:#ef9b78;font-size:.78rem;font-weight:900;letter-spacing:.1em}.empty-evidence h3{font-size:1.7rem;margin:.65rem 0}.empty-evidence p{color:#bcc7c7;margin:0;max-width:720px}
.visual-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}.visual-card{position:relative;overflow:hidden;background:var(--ink);min-height:360px}.visual-card.wide{grid-column:span 2}.visual-card img{width:100%;height:100%;min-height:360px;object-fit:cover;transition:transform .45s ease}.visual-card:hover img{transform:scale(1.025)}.visual-card figcaption{position:absolute;left:0;right:0;bottom:0;padding:4rem 1.35rem 1.2rem;color:#fff;background:linear-gradient(transparent,rgba(13,23,27,.88))}.visual-card figcaption strong{display:block;font-size:1.15rem}.visual-card figcaption span{font-size:.78rem;color:#d7dfde}.single-visual{margin:0 0 3rem;position:relative;overflow:hidden;background:var(--ink)}.single-visual img{width:100%;aspect-ratio:16/9;object-fit:cover}.single-visual figcaption{display:flex;justify-content:space-between;gap:1rem;padding:.85rem 1rem;background:var(--ink);color:#dbe2e1;font-size:.8rem}.single-visual figcaption b{color:#ef9b78}.visual-note{color:var(--muted);font-size:.86rem;margin-top:1rem}
.profile-placeholder{display:grid;grid-template-columns:180px 1fr;gap:2rem;align-items:center;background:#fff;border:1px solid var(--line);padding:2rem}.avatar-placeholder{aspect-ratio:1;background:#d9d2c7;display:grid;place-items:center;text-align:center;font-size:1.25rem;font-weight:900;color:#5b6667}
.knowledge-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}.knowledge-grid a{background:#fff;border:1px solid var(--line);padding:2rem;min-height:230px}.knowledge-grid a:hover{border-color:var(--rust)}.knowledge-grid span{color:var(--rust);font-size:.78rem;font-weight:900}.knowledge-grid h2{font-size:1.6rem;line-height:1.25;margin:1.4rem 0 .6rem}.knowledge-grid p{color:var(--muted)}
.fact-grid{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);margin-bottom:4rem}.fact-grid div{padding:1.4rem;border-right:1px solid var(--line)}.fact-grid div:last-child{border:0}.fact-grid strong{font-size:2.3rem;display:block}.fact-grid span{color:var(--muted)}
.notice{margin-top:2rem;border:1px solid #dbad97;background:#fff6f0;padding:1.3rem}.notice p{margin:.35rem 0 0;color:var(--ink-2)}
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:2.5rem}.lead-form{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.lead-form label{display:grid;gap:.4rem;font-weight:800;font-size:.9rem}.lead-form .wide{grid-column:1/-1}.lead-form input,.lead-form select,.lead-form textarea{width:100%;border:1px solid var(--line);background:#fff;padding:.85rem;border-radius:0;color:var(--ink)}.lead-form input:focus,.lead-form select:focus,.lead-form textarea:focus{outline:3px solid rgba(198,99,62,.22);border-color:var(--rust)}.result-panel{background:var(--ink);color:#fff;padding:2rem;align-self:start;position:sticky;top:100px}.result-panel>span{color:#ef9b78;font-size:.78rem;font-weight:900}.result-panel h3{font-size:1.55rem;margin:.7rem 0}.result-panel pre{white-space:pre-wrap;font-family:inherit;color:#cbd4d3;min-height:210px}.ghost-dark{background:transparent;color:#fff;border:1px solid #617074}.ghost-dark:disabled{opacity:.45;cursor:not-allowed}
.direct-contact{background:#fff;border:1px solid var(--line);padding:1.5rem;margin:1.2rem 0 2rem;display:grid;gap:.65rem}.direct-contact strong{font-size:1.35rem}.direct-contact .phone-link{font-size:1.85rem;line-height:1.2;font-weight:900;color:var(--rust)}.direct-contact address{font-style:normal;color:var(--muted)}.certificate-grid{display:grid;grid-template-columns:.78fr 1.22fr;gap:1.2rem}.certificate-card{margin:0;background:#fff;border:1px solid var(--line);padding:1rem}.certificate-card img{width:100%;height:420px;object-fit:contain;background:#f3f3f3}.certificate-card figcaption{padding:.9rem .25rem .1rem}.certificate-card figcaption strong{display:block}.certificate-card figcaption span{display:block;color:var(--muted);font-size:.86rem;margin-top:.25rem}.company-details{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-top:2rem}.company-detail{background:#fff;border:1px solid var(--line);padding:1.25rem}.company-detail span{display:block;color:var(--rust);font-size:.76rem;font-weight:900;letter-spacing:.08em}.company-detail strong,.company-detail address{display:block;margin-top:.45rem;font-style:normal;line-height:1.7}
.filter-row{display:flex;flex-wrap:wrap;gap:.55rem;margin-bottom:2rem}.filter-row button{background:#fff;border:1px solid var(--line);padding:.58rem .9rem;cursor:pointer}.filter-row button.active{background:var(--ink);border-color:var(--ink);color:#fff}
@media(max-width:900px){
  .nav{min-height:66px}.menu{display:block;margin-left:auto}.nav-links{display:none;position:absolute;left:0;right:0;top:102px;background:var(--paper);padding:1rem 20px;flex-direction:column;align-items:flex-start;border-bottom:1px solid var(--line)}.nav-links.open{display:flex}.nav-cta{display:none}
  .hero,.hero-content{min-height:620px}.hero-copy{width:88%}.service-grid{grid-template-columns:repeat(2,1fr)}.quote-strip{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.info-grid{grid-template-columns:1fr 1fr}.steps{grid-template-columns:1fr 1fr}.contact-grid{grid-template-columns:1fr}.result-panel{position:static}
}
@media(max-width:620px){
  .inner{width:min(100% - 28px,var(--max))}.topbar .inner{justify-content:center}.topbar span:first-child{display:none}.topbar span:last-child{display:inline}
  .hero,.hero-content{min-height:650px}.hero-content{padding:72px 0}.hero-copy{width:100%}.hero::after{background:linear-gradient(90deg,rgba(10,20,24,.92),rgba(10,20,24,.55))}
  h1{font-size:2.85rem}.proof{gap:.6rem}.proof strong{font-size:1rem}.proof span{font-size:.7rem}
  .section{padding:66px 0}.section-head{display:block}.section-head p{margin-top:1rem}
  .service-grid,.info-grid,.knowledge-grid,.visual-grid,.certificate-grid,.company-details{grid-template-columns:1fr}.visual-card.wide{grid-column:auto}.visual-card,.visual-card img{min-height:260px}.single-visual figcaption{display:block}.certificate-card img{height:auto;max-height:520px}.service-card{min-height:205px}.quote-copy,.quote-sample{padding:1.35rem}.quote-row{grid-template-columns:1.1fr .7fr .5fr;font-size:.76rem}.footer-grid,.steps{grid-template-columns:1fr}.sub-hero{padding:44px 0 54px}.crumbs{margin-bottom:1.7rem}.answer{margin-bottom:3rem;padding:1.1rem}.answer p{font-size:1.08rem}.cta-band .inner{display:block}.cta-band .btn{margin-top:1.2rem}.profile-placeholder{grid-template-columns:1fr}.avatar-placeholder{width:130px}.fact-grid{grid-template-columns:1fr}.fact-grid div{border-right:0;border-bottom:1px solid var(--line)}.lead-form{grid-template-columns:1fr}.lead-form .wide{grid-column:auto}
}