@charset "UTF-8";
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.light{background:var(--paper);color:var(--ink);--line:rgba(18,37,44,.17);--muted:#5a666c}.light .eyebrow{color:var(--accent-dark)}.light :focus-visible{outline-color:var(--accent-dark)}.product-row{display:grid;grid-template-columns:1.08fr 1fr;gap:clamp(36px,7vw,110px);align-items:center;padding-block:44px 60px;border-bottom:1px solid var(--line)}.product-row+.product-row{padding-top:65px}.product-row.reverse .product-visual{order:2}.product-kicker{font:12px var(--mono);letter-spacing:.15em;color:#68767b;margin-bottom:20px}.product-copy h3{font-size:clamp(32px,3.2vw,50px);line-height:1.2;margin-bottom:13px;letter-spacing:-.04em}.product-copy h4{font-size:20px;font-weight:500;margin-bottom:23px}.product-copy p{font-size:15px;line-height:1.95}.feature-list{list-style:none;padding:0;margin:25px 0 30px;display:grid;gap:10px}.feature-list li{font-size:14px;display:flex;gap:12px;align-items:center}.feature-list li:before{content:"↗";color:var(--accent-dark);font-size:18px}.product-visual{min-height:385px;background:#dfe8e8;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;padding:38px}.visual-label{position:absolute;bottom:13px;left:18px;font:11px var(--mono);color:#617477;letter-spacing:.06em}.product-window{width:100%;background:#fff;border:1px solid #c6d9d9;border-radius:8px;box-shadow:0 25px 40px #21404015;transform:rotate(-3deg);position:relative}.window-bar{display:flex;align-items:center;gap:4px;border-bottom:1px solid #e1e9e9;padding:12px 15px}.window-bar i{width:5px;height:5px;background:#bacaca;border-radius:50%}.window-bar span{font:10px var(--mono);color:#8b9c9d;margin-left:10px}.learning-ui{padding:24px}.learning-ui header{display:flex;align-items:center;justify-content:space-between;margin-bottom:27px}.learning-ui header strong{font-size:22px;letter-spacing:-1px}.learning-ui header span{font-size:10px;color:#41776f;background:#e0f7ec;border-radius:20px;padding:3px 10px}.learning-ui small{font-size:11px;color:#7f9495}.learning-ui h4{font-size:22px;margin:5px 0 20px}.lesson-row{display:flex;align-items:center;gap:12px;padding:12px 0;border-top:1px solid #e1e9e9;font-size:12px}.lesson-row i{width:29px;height:29px;border-radius:7px;background:#eaf3f0;display:grid;place-items:center;color:#427166;font-style:normal}.lesson-row span:last-child{margin-left:auto;color:#74958d}.security-visual{background:#111c25;color:#b9c7d2}.security-visual .visual-label{color:#899daa}.network-diagram{display:flex;flex-direction:column;align-items:center;width:100%;font-size:12px}.network-origin{border:1px solid #4f686f;padding:14px 24px;display:flex;gap:14px;align-items:center;color:#dfeceb}.network-line{width:1px;height:25px;background:#587a81}.network-core{border:1px solid #81d8ce;background:#162e33;color:#adfff3;width:80%;padding:20px;text-align:center;box-shadow:0 0 35px #6de5d015}.network-core strong{display:block;font:18px var(--mono);letter-spacing:-.5px}.network-core span{font-size:11px;opacity:.7}.network-branches{border-top:1px solid #45656d;width:90%;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.network-branches span{text-align:center;padding:20px 0 10px;position:relative;font-size:11px}.network-branches span:before{content:"";height:12px;width:1px;background:#45656d;position:absolute;top:0;left:50%}.product-note{display:flex;align-items:center;justify-content:space-between;margin-top:32px;gap:25px}.product-note p{font-size:14px}.product-note a{font-size:14px}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px}.filter{min-height:42px;padding:9px 19px;border:1px solid var(--line);border-radius:30px;background:transparent;color:#aebac3;font-size:13px}.filter[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:var(--ink)}.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}.case-card{border-top:1px solid #576670;padding-top:26px}.case-cover{height:230px;display:flex;flex-direction:column;justify-content:center;position:relative;overflow:hidden;padding:32px;background:#152426}.case-cover:before{content:"";position:absolute;right:-30px;top:-110px;width:350px;height:350px;border:1px solid #75ad9d44;border-radius:50%;box-shadow:0 0 0 40px #79b6a610,0 0 0 80px #79b6a609}.case-cover b{font-family:var(--mono);font-size:clamp(32px,3.5vw,50px);line-height:1.1;letter-spacing:-.05em;color:#c6eee1;font-weight:400;z-index:1}.case-cover p{font:11px var(--mono);letter-spacing:.14em;color:#8ca49f;margin-top:17px;z-index:1}.case-cover.security{background:#18202e}.case-cover.security:before{border-radius:0;transform:rotate(45deg);border-color:#869dd344;box-shadow:0 0 0 40px #859cc610,0 0 0 80px #859cc609}.case-cover.security b{color:#d0dff8}.case-info{padding:27px 0 0;display:flex;align-items:flex-start;gap:25px}.case-info small{font:12px var(--mono);color:#738a94;padding-top:6px}.case-info h3{font-size:23px;margin-bottom:12px}.case-info p{font-size:14px;line-height:1.9}.case-info button{background:transparent;padding:12px 0 0;display:flex;align-items:center;gap:14px;font-size:14px;color:var(--accent)}.case-tags{font:11px var(--mono);color:#7e979f;margin-top:18px}.case-note{font-size:12px;color:#768995;margin-top:30px}.reviews-section{border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:100px}.reviews-section h2{font-size:clamp(34px,3.5vw,56px);margin-top:24px;line-height:1.3}.review-panel{padding-left:40px;border-left:1px solid var(--line);display:flex;flex-direction:column;justify-content:center}.quote-mark{font-family:Georgia,serif;font-size:100px;line-height:.7;color:var(--accent);display:block}.review-empty h3{font-size:24px;margin:28px 0 18px}.review-empty p{font-size:14px;max-width:400px;line-height:1.95}.review-empty .text-link{margin-top:20px}.review-text{font-size:23px;line-height:1.8;color:var(--white);margin:24px 0}.review-author{font-size:14px}.review-role{font-size:12px;color:var(--muted)}.review-nav{display:flex;align-items:center;gap:12px;margin-top:24px}.review-nav button{width:40px;height:40px;border:1px solid var(--line);background:transparent;border-radius:50%}.review-nav output{font:12px var(--mono);margin-left:auto;color:var(--muted)}
.cta-band{border-top:1px solid var(--line);position:relative;overflow:hidden;padding-block:80px;background:#c1eee4;color:var(--ink)}.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}.cta-band .eyebrow{color:#42796f}.cta-band h2{font-size:clamp(32px,4vw,60px);margin-top:18px}.site-footer{background:#080b0e;padding:65px 0 0}.footer-top{display:flex;align-items:flex-start;justify-content:space-between;gap:50px}.footer-top h3{font-size:22px;margin-bottom:12px}.footer-top p{font-size:14px;line-height:1.9}.footer-links{display:flex;gap:65px}.footer-links div{display:flex;flex-direction:column;gap:10px}.footer-links small{font:11px var(--mono);letter-spacing:.13em;color:#657981;margin-bottom:6px}.footer-links a{font-size:14px;color:#bdc7cd}.footer-links a:hover{color:var(--accent)}.footer-wordmark{font-family:Arial,sans-serif;font-size:clamp(100px,21vw,325px);letter-spacing:-.07em;line-height:.87;color:#161e24;margin:68px 0 25px;font-weight:600;overflow:hidden;user-select:none}.footer-bottom{border-top:1px solid var(--line);padding:23px 0 28px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;color:#73838e;font-size:12px}.legal-links{display:flex;gap:22px;flex-wrap:wrap}.legal-links a{display:flex;gap:5px;align-items:center}.legal-links img{width:14px;height:14px}.legal-links a:hover{color:var(--white)}
.page-hero{padding-top:190px;padding-bottom:80px;position:relative;overflow:hidden}.page-hero h1{font-size:clamp(42px,5.7vw,88px);margin:30px 0}.page-hero .hero-lead{max-width:560px;line-height:1.9}.page-index{font:12px var(--mono);letter-spacing:.1em;color:#748b96;margin-top:50px}.about-hero{min-height:780px}.about-hero .wrap{position:relative;z-index:2}.about-hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#080b0e 2%,#080b0ec9 36%,#080b0e10),url(hero.png) center 70% / cover no-repeat;opacity:.8}.about-intro{display:grid;grid-template-columns:.65fr 1.35fr;gap:80px}.about-intro h2{font-size:36px;line-height:1.3}.about-intro .statement{font-size:clamp(24px,2.7vw,38px);line-height:1.6;color:#e3e9ec;letter-spacing:-.02em}.about-intro p+p{margin-top:26px}.about-intro .text-link{margin-top:28px}.principles{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);margin-top:70px}.principle{padding:35px 38px 0 0}.principle+.principle{border-left:1px solid var(--line);padding-left:38px}.principle>span{font:12px var(--mono);color:#638e88;letter-spacing:.12em}.principle h3{font-size:24px;margin:35px 0 16px}.principle p{font-size:14px;line-height:1.9}.process{display:grid;grid-template-columns:.8fr 1.2fr;gap:90px}.process h2{font-size:clamp(36px,3.5vw,56px);margin:24px 0}.process-intro>p{max-width:330px}.process-step{border-top:1px solid var(--line)}.process-step:last-child{border-bottom:1px solid var(--line)}.process-step summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:24px;padding:25px 0}.process-step summary::-webkit-details-marker{display:none}.process-step summary small{font:12px var(--mono);color:#65827c}.process-step summary strong{font-size:22px;font-weight:500}.process-step summary:after{content:"+";margin-left:auto;color:#63887f;font:24px var(--mono)}.process-step[open] summary:after{content:"−"}.process-step>div{padding:0 32px 26px 40px}.process-step p{font-size:14px;line-height:1.9}.process-step .deliverable{margin-top:16px;font-size:12px;color:#137065}.expertise-row{border-top:1px solid var(--line);padding:27px 0;display:grid;grid-template-columns:.55fr 1fr 1fr;gap:40px;align-items:center}.expertise-row small{font:12px var(--mono);color:#6c8a98}.expertise-row h3{font-size:25px}.expertise-row p{font-size:14px}.expertise-row:last-child{border-bottom:1px solid var(--line)}
.contact-hero{padding-bottom:65px;background:var(--ink)}.contact-top{display:flex;justify-content:space-between;gap:50px;align-items:flex-end}.contact-top .contact-orbit{width:170px;height:170px;border-radius:50%;border:1px solid #455d66;display:flex;align-items:center;justify-content:center;position:relative;flex:none;margin:0 25px 18px 0}.contact-orbit:before{content:"";position:absolute;inset:17px;border:1px solid #375b61;border-radius:50%;transform:rotateX(50deg) rotateY(30deg)}.contact-orbit:after{content:"";position:absolute;width:8px;height:8px;background:var(--accent);top:30px;right:19px;border-radius:50%;box-shadow:0 0 20px #8afae466}.contact-orbit span{font:12px var(--mono);letter-spacing:.13em;color:var(--accent)}.contact-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:clamp(45px,7vw,110px)}.contact-details h2{font-size:32px;margin-bottom:35px}.contact-method{padding:24px 0;border-top:1px solid var(--line)}.contact-method small{font:11px var(--mono);letter-spacing:.14em;color:#738289;display:block;margin-bottom:13px}.contact-method a{font-size:clamp(20px,2vw,30px);letter-spacing:-.035em}.contact-method p{font-size:16px}.contact-method a:hover{color:var(--accent-dark)}.contact-method .address-line{font-size:19px;color:#192b32}.contact-tip{margin-top:28px;font-size:13px;max-width:300px}.brief-form{background:#11191f;color:var(--white);padding:clamp(26px,3.5vw,54px);border:1px solid #29333b}.brief-form h2{font-size:30px;margin-bottom:12px}.brief-form>p{font-size:14px;color:#a3b1ba;margin-bottom:35px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px 22px}.field{display:flex;flex-direction:column;gap:10px;min-width:0}.field.full{grid-column:1/-1}.field label{font-size:13px;color:#cbd6dd}.field label span{color:#6d838f;font-size:12px;margin-left:6px}.field input,.field select,.field textarea{border:1px solid #3a474f;border-radius:2px;background:#10161a;color:#e1ecef;padding:13px 14px;width:100%;font-size:14px;min-height:49px}.field select{color-scheme:dark}.field input::placeholder,.field textarea::placeholder{color:#788893}.field input:focus,.field textarea:focus,.field select:focus{outline:1px solid var(--accent);border-color:var(--accent);outline-offset:0}.field textarea{resize:vertical;min-height:145px}.form-note{font-size:12px;color:#8599a4;margin:24px 0 22px}.brief-form .button{width:100%;background:var(--accent);color:var(--ink)}.brief-form .button:hover{background:#bafbf1}.draft-panel{margin-top:25px;padding-top:24px;border-top:1px solid #34454f}.draft-panel h3{font-size:18px;margin-bottom:14px}.draft-panel textarea{width:100%;min-height:180px;background:#0c1217;color:#d4e3ea;border:1px solid #394d57;padding:15px;font-size:13px;line-height:1.9}.draft-panel .actions{gap:12px;margin-top:15px}.draft-panel .button{width:auto;min-height:46px;font-size:13px;padding:10px 16px}.draft-panel p{font-size:12px;color:#9eafb8;margin-top:12px}.faq-section{display:grid;grid-template-columns:.7fr 1.3fr;gap:100px}.faq-section h2{font-size:37px;margin-top:24px}.faq-section .process-step summary strong{font-size:18px}.faq-section .process-step>div{padding-left:0}.faq-section .process-step p{color:var(--muted)}
dialog{background:#11191f;color:var(--white);border:1px solid #435861;border-radius:4px;padding:0;width:min(760px,calc(100% - 32px));max-height:85svh;overflow:auto;box-shadow:0 40px 150px #0009}dialog::backdrop{background:#000b;backdrop-filter:blur(9px)}.dialog-inner{padding:clamp(28px,5vw,58px)}.dialog-close{position:absolute;top:17px;right:18px;width:40px;height:40px;border:1px solid var(--line);background:#17242c;border-radius:50%;font-size:24px}.dialog-inner h2{font-size:35px;margin:26px 40px 24px 0}.dialog-inner h3{font-size:16px;color:var(--accent);margin:24px 0 10px}.dialog-inner p,.dialog-inner li{font-size:15px;color:#acbcc6;line-height:1.9}.dialog-inner ul{padding-left:20px}.dialog-inner .button{margin-top:28px}.js-reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}.js-reveal.is-visible{opacity:1;transform:none}
@keyframes cinematic{0%{transform:scale(1.025) translate3d(0,0,0)}100%{transform:scale(1.095) translate3d(-1.2%,1%,0)}}@keyframes scrolldown{to{transform:translateY(52px)}}
@media(min-width:1800px){.hero h1{font-size:90px}.hero{height:1000px}.hero-copy{margin-left:max(0px,calc((100vw - 1520px)/8))}}
@media(max-width:1180px){.brand small{display:none}.desktop-nav{gap:22px}.header-inner{gap:24px}.hero h1{font-size:62px}.hero-copy{max-width:520px}.hero p{max-width:400px}.hero{height:800px}.strip-item span{display:none}.service-card{padding:30px 25px}.product-row{gap:45px}.product-visual{padding:30px 22px;min-height:360px}.reviews-section{gap:60px}.process,.faq-section{gap:60px}.contact-layout{gap:55px}}
@media(max-width:900px){.desktop-nav,.header-contact{display:none}.menu-toggle{display:grid}.header-inner{height:80px}.brand small{display:block}.hero{height:840px;min-height:780px;max-height:none}.hero .wrap{padding-top:75px}.hero h1{font-size:clamp(48px,7.5vw,70px)}.hero-copy{max-width:650px}.hero-scene img{object-position:60% center}.hero-scene:after{background:linear-gradient(90deg,#03080ce3,#03080c66 70%,transparent),linear-gradient(0deg,var(--ink),transparent 40%)}.hero p{max-width:450px}.scene-label{display:none}.section-top{gap:30px}.service-grid{grid-template-columns:repeat(2,1fr)}.product-row{grid-template-columns:1fr 1fr;gap:35px}.product-visual{min-height:350px;padding:24px 18px}.learning-ui{padding:20px 16px}.product-copy h3{font-size:35px}.product-copy h4{font-size:17px}.reviews-section{gap:40px}.review-panel{padding-left:28px}.about-hero{min-height:700px}.about-intro{grid-template-columns:1fr;gap:40px}.process,.faq-section{grid-template-columns:1fr;gap:45px}.process-intro>p{max-width:600px}.contact-layout{grid-template-columns:1fr;gap:50px}.contact-details{display:grid;grid-template-columns:1fr 1fr;gap:0 32px}.contact-details h2,.contact-details .contact-tip{grid-column:1/-1}.contact-tip{max-width:100%}.contact-top .contact-orbit{width:130px;height:130px}.footer-links{gap:38px}.expertise-row{grid-template-columns:.5fr 1fr;gap:25px}.expertise-row p{grid-column:2}}
@media(max-width:640px){body{font-size:16px}.brand img{width:139px;height:28px}.brand small{display:none}.hero{height:auto;min-height:780px;align-items:flex-start}.hero .wrap{padding-top:165px;padding-bottom:125px}.hero h1{font-size:clamp(43px,10.6vw,63px);line-height:1.22;margin:25px 0}.hero .eyebrow{font-size:10px;letter-spacing:.12em}.hero p{font-size:14px;max-width:310px;margin-bottom:30px}.hero-scene img{object-position:66% center;opacity:.62}.hero-scene:after{background:linear-gradient(90deg,#03080cc9,#03080c66),linear-gradient(0deg,var(--ink),transparent 42%)}.hero .actions{gap:18px}.hero .button{padding:13px 20px;gap:18px;font-size:14px;min-height:50px}.hero .text-link{font-size:13px}.hero-bottom{font-size:10px;bottom:24px}.hero-bottom>span{display:none}.capability-strip .wrap{padding-inline:22px}.strip-item{padding:23px 12px 23px 0;gap:8px;flex-direction:column;align-items:flex-start}.strip-item+.strip-item{padding-left:18px}.strip-item strong{font-size:13px}.strip-item small{font-size:10px}.section-top{display:block;margin-bottom:35px}.section-top>p{margin-top:22px;font-size:14px;max-width:100%}.section-top h2{font-size:34px}.intro-line{font-size:26px}.intro-end{display:block}.intro-end p{font-size:14px}.intro-end .text-link{margin-top:16px}.service-grid{grid-template-columns:1fr}.service-card{min-height:265px;padding:30px 26px}.service-top{margin-bottom:34px}.service-card p{max-width:none}.service-card .card-link{opacity:1;top:31px;right:22px}.service-card .service-top small{margin-right:30px}.product-row{grid-template-columns:1fr;gap:32px;padding-top:15px}.product-row.reverse .product-visual{order:0}.product-row+.product-row{padding-top:45px}.product-visual{min-height:340px;padding:32px}.product-copy h3{font-size:39px}.product-copy h4{font-size:19px}.product-note{display:block}.product-note .text-link{margin-top:16px}.case-grid{grid-template-columns:1fr;gap:40px}.case-cover{height:210px}.case-cover b{font-size:40px}.case-info h3{font-size:21px}.filter{font-size:12px;padding:8px 14px}.reviews-section{grid-template-columns:1fr;gap:42px}.reviews-section h2{font-size:35px}.review-panel{padding:35px 0 0;border-left:0;border-top:1px solid var(--line)}.quote-mark{font-size:80px}.cta-inner{display:block}.cta-band{padding-block:62px}.cta-band h2{font-size:34px;line-height:1.4}.cta-band .button{margin-top:30px}.footer-top{display:block}.footer-links{margin-top:35px;gap:58px}.footer-wordmark{margin:55px 0 23px;font-size:23vw}.footer-bottom{font-size:11px;line-height:1.9}.legal-links{gap:10px}.page-hero{padding-top:155px;padding-bottom:60px}.page-hero h1{font-size:clamp(42px,10.5vw,62px)}.page-hero .hero-lead{font-size:14px;max-width:340px}.page-index{font-size:10px;margin-top:35px}.about-hero{min-height:660px}.about-hero:before{background-position:60% bottom;opacity:.48}.about-intro h2{font-size:30px}.about-intro .statement{font-size:26px}.about-intro p{font-size:14px}.principles{grid-template-columns:1fr;margin-top:50px}.principle{padding:28px 0}.principle+.principle{border-left:0;border-top:1px solid var(--line);padding-left:0}.principle h3{margin-top:20px;font-size:22px}.process-step summary strong{font-size:20px}.expertise-row{grid-template-columns:1fr;gap:12px}.expertise-row h3{font-size:24px}.expertise-row p{grid-column:auto}.contact-top .contact-orbit{display:none}.contact-details{grid-template-columns:1fr}.contact-method a{font-size:28px}.contact-method .address-line{font-size:18px}.brief-form{padding:27px 22px}.brief-form h2{font-size:26px}.form-grid{grid-template-columns:1fr}.form-grid .full{grid-column:auto}.field input,.field select,.field textarea{font-size:16px}.contact-details h2{font-size:28px}.faq-section .process-step summary strong{font-size:17px}.eyebrow{font-size:11px}.dialog-inner h2{font-size:29px}.draft-panel .actions{align-items:stretch;flex-direction:column}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.js-reveal{opacity:1;transform:none}.hero-scene img{transform:none}.scroll-line:after{top:10px}.motion-control{display:none}}
.service-card p,.product-copy p,.case-info p,.review-empty p,.principle p,.process-step p,.expertise-row p,.about-intro p,.section-top>p,.hero p,.page-hero .hero-lead{font-size:16px}
.field label,.filter,.case-info button,.product-note p,.product-note a,.brief-form>p,.draft-panel .button{font-size:14px}
.brief-form button:disabled{opacity:.5;transform:none}
@media(min-width:901px){.hero{height:min(900px,100svh);min-height:720px}}
@media print{.site-header,.hero-scene,.hero-grid,.scene-label,.hero-bottom,.menu-toggle,.cta-band,.footer-wordmark,.filters,.button,dialog{display:none!important}body,.light{background:white;color:black}p{color:#333}.hero,.page-hero{height:auto;min-height:0;max-height:none;padding:30px 0}.hero .wrap{padding-block:0}.section{padding-block:30px}.service-grid,.case-grid,.product-row,.contact-layout,.reviews-section{display:block}.service-card,.case-card,.product-row{break-inside:avoid;margin-bottom:24px}.site-footer{background:white}.footer-bottom{color:#333}.js-reveal{opacity:1;transform:none}}

/* Dafei identity: original DF monogram and selectable live wordmark. */
.brand{gap:12px}
.brand img.brand-symbol{width:70px;height:44px;object-fit:cover;flex:none}
.brand-wordmark{display:flex;flex-direction:column;gap:5px}
.brand-wordmark strong{font-size:24px;line-height:1.15;letter-spacing:.09em;font-weight:650;color:var(--white);white-space:nowrap}
.brand .brand-wordmark small{display:block;border:0;padding:0;font:9px var(--mono);letter-spacing:.14em;line-height:1.2;color:#9cb0bb;white-space:nowrap}
.footer-brand{margin-bottom:20px;width:max-content}
@media(max-width:640px){.brand img.brand-symbol{width:60px;height:38px}.brand-wordmark strong{font-size:21px}.brand .brand-wordmark small{font-size:9px;letter-spacing:.12em}.brand{gap:9px}}