:root{color-scheme:dark;--bg:#0b0d0f;--surface:#141719;--surface-2:#1b1f21;--line:#303538;--text:#f2f0eb;--muted:#a4aaa9;--gold:#d0ad73;--gold-dark:#886c43;--shell:1240px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:82px}body{margin:0;background:var(--bg);color:var(--text);font-family:"DM Sans","Noto Sans Thai",sans-serif;font-size:16px;line-height:1.7}a{color:inherit;text-decoration:none}button{font:inherit}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.18}h1,h2{letter-spacing:-.045em}h3{letter-spacing:-.025em}.shell{width:min(calc(100% - 64px),var(--shell));margin-inline:auto}.skip-link{position:absolute;left:16px;top:-70px;z-index:100;background:var(--gold);color:#111;padding:10px 16px}.skip-link:focus{top:12px}:focus-visible{outline:2px solid var(--gold);outline-offset:4px}::selection{background:var(--gold);color:#111}
.site-header{position:sticky;top:0;z-index:30;background:rgba(11,13,15,.93);border-bottom:1px solid rgba(255,255,255,.1);backdrop-filter:blur(18px)}.header-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:32px}.brand{display:inline-flex;align-items:center;gap:13px;white-space:nowrap}.brand-name{font-size:15px;font-weight:700;letter-spacing:.16em}.brand-name b{font-weight:500;color:var(--gold)}.brand-symbol{display:flex;align-items:center;gap:3px;height:27px}.brand-symbol span{width:2px;background:var(--gold);border-radius:2px}.brand-symbol span:nth-child(1),.brand-symbol span:nth-child(5){height:8px}.brand-symbol span:nth-child(2),.brand-symbol span:nth-child(4){height:19px}.brand-symbol span:nth-child(3){height:27px}.primary-nav{display:flex;align-items:center;gap:27px}.primary-nav a{font-size:13px;font-weight:600;color:#b8bfbd;white-space:nowrap;transition:color .2s}.primary-nav a:hover,.primary-nav a:focus-visible{color:var(--gold)}.primary-nav .nav-contact{color:var(--gold);border:1px solid var(--gold-dark);padding:8px 15px}.menu-toggle{display:none}
.hero{position:relative;min-height:min(780px,calc(100svh - 76px));display:flex;align-items:center;overflow:hidden;background:#111417}.hero-image{position:absolute;inset:0 0 0 35%;background-image:linear-gradient(90deg,#0d0f11 0%,rgba(13,15,17,.12) 45%,rgba(13,15,17,.3) 100%),url('hero-audio-lab.png');background-position:center;background-size:cover}.hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,#0b0d0f 0%,rgba(11,13,15,.98) 23%,rgba(11,13,15,.68) 53%,rgba(11,13,15,.1) 100%),linear-gradient(0deg,rgba(11,13,15,.7),transparent 40%)}.hero-content{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:center;padding-block:116px 128px}.hero-copy{max-width:770px}.eyebrow,.section-index{font-family:"DM Sans",sans-serif;color:var(--gold);font-size:12px;font-weight:700;letter-spacing:.23em}.eyebrow{display:flex;align-items:center;gap:15px;margin-bottom:31px}.eyebrow-line{display:block;width:38px;height:1px;background:var(--gold)}.hero h1{font-family:"DM Sans",sans-serif;font-size:clamp(70px,10vw,154px);font-weight:700;line-height:.92;letter-spacing:-.085em;margin-bottom:31px}.hero h1 span{color:var(--gold)}.hero-discipline{font-family:"DM Sans",sans-serif;font-size:clamp(16px,1.7vw,20px);font-weight:600;letter-spacing:.025em;line-height:1.65;max-width:770px;margin-bottom:20px}.hero-discipline i{font-style:normal;color:var(--gold);padding-inline:4px}.hero-description{font-size:17px;line-height:1.8;color:#c5cbc9;max-width:560px;margin-bottom:31px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.button{display:inline-flex;min-height:50px;align-items:center;justify-content:center;padding:11px 23px;font-size:14px;font-weight:700;transition:background .2s,border-color .2s,transform .2s}.button:hover{transform:translateY(-2px)}.button-primary{background:var(--gold);color:#101213}.button-primary:hover{background:#e3c18a}.button-outline{border:1px solid #777f7e}.button-outline:hover{border-color:var(--gold);background:rgba(208,173,115,.1)}.hero-aside{align-self:flex-end;display:flex;flex-direction:column;gap:12px;color:rgba(255,255,255,.48);font:700 11px "DM Sans",sans-serif;letter-spacing:.28em;writing-mode:vertical-rl}.hero-bottom{position:absolute;z-index:2;bottom:30px;left:0;right:0;display:flex;justify-content:space-between;color:#aaaead;font:700 11px "DM Sans",sans-serif;letter-spacing:.17em}.hero-scroll{display:flex;gap:15px;align-items:center;font-family:"Noto Sans Thai",sans-serif;letter-spacing:0;font-weight:500}.hero-scroll span{font:700 18px "DM Sans",sans-serif;color:var(--gold)}
.section{padding-block:112px;scroll-margin-top:75px}.section h2{font-size:clamp(40px,5vw,70px);font-weight:600;margin-bottom:0}.section h2 em{color:var(--gold);font-style:normal}.section-index{margin-bottom:22px}.about-section{background:#101315;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.about-layout{display:grid;grid-template-columns:1fr 1fr;gap:9%}.about-copy{padding-top:42px;color:var(--muted);max-width:600px}.about-copy .lead{font-size:22px;line-height:1.65;color:var(--text);font-weight:500;margin-bottom:20px}.about-copy>p:not(.lead){font-size:16px}.about-facts{display:flex;gap:66px;border-top:1px solid var(--line);padding-top:30px;margin-top:36px}.about-facts div{display:flex;flex-direction:column}.about-facts strong{font-family:"DM Sans",sans-serif;font-size:58px;line-height:1;font-weight:600;letter-spacing:-.065em;color:var(--gold)}.about-facts strong span{font-size:34px}.about-facts small{color:var(--muted);font-size:14px;margin-top:8px}
.section-heading{display:flex;align-items:end;justify-content:space-between;gap:40px;margin-bottom:38px}.section-heading>p{max-width:380px;margin:0 0 5px;color:var(--muted);font-size:16px}.services-section{background:var(--bg)}.services-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.service-card{position:relative;min-height:260px;padding:30px 30px 34px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#111416;transition:background .25s}.service-card:hover{background:#1a1d1e}.service-no{font:600 12px "DM Sans",sans-serif;letter-spacing:.13em;color:var(--gold)}.service-mark{position:absolute;right:30px;top:20px;font-size:30px;line-height:1;color:#72654f}.service-card h3{font-size:21px;margin:72px 0 10px}.service-card p{margin:0;max-width:325px;color:var(--muted);font-size:15px}
.projects-section{background:#171a1c}.project-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.project-card{background:#0e1012;border:1px solid #34383a}.project-visual{position:relative;overflow:hidden;height:265px;padding:24px;background:radial-gradient(circle at 75% 30%,#4c4030 0%,#222525 36%,#101314 76%);display:flex;flex-direction:column;justify-content:space-between}.project-visual:before{content:"";position:absolute;width:300px;height:300px;border:1px solid rgba(208,173,115,.18);border-radius:50%;top:-135px;right:-35px;box-shadow:0 0 0 38px rgba(208,173,115,.035),0 0 0 76px rgba(208,173,115,.025)}.project-visual:after{content:"";position:absolute;left:-25%;right:-25%;bottom:49px;height:1px;background:linear-gradient(90deg,transparent,rgba(208,173,115,.4),transparent);transform:rotate(-15deg)}.visual-reference{background-image:linear-gradient(180deg,rgba(10,12,13,.08),rgba(10,12,13,.66)),url("assets/systems/pc-audio-reference/reference-system.webp");background-size:cover;background-position:center}.visual-reference strong{font-size:clamp(60px,7vw,100px);letter-spacing:-.06em;text-shadow:0 2px 22px rgba(0,0,0,.6)}.visual-za3{background-image:linear-gradient(180deg,rgba(10,12,13,.12),rgba(10,12,13,.62)),url("assets/projects/fosi-za3/fosi-za3-final-board.webp");background-size:cover;background-position:center}.visual-mj{background:radial-gradient(circle at 75% 30%,#413636,#232123 38%,#121314 80%)}.visual-more{background:radial-gradient(circle at 75% 30%,#494236,#242725 38%,#111413 80%)}.visual-label{position:relative;z-index:1;font:700 11px "DM Sans",sans-serif;letter-spacing:.2em;color:#d0c1a8}.project-visual strong{position:relative;z-index:1;align-self:center;font:600 clamp(70px,10vw,130px) "DM Sans",sans-serif;line-height:1;letter-spacing:-.1em;color:rgba(237,231,218,.11);text-shadow:0 1px 0 rgba(255,255,255,.15)}.visual-rule{position:relative;z-index:1;display:block;width:54px;height:2px;background:var(--gold)}.project-info{padding:22px 24px 25px}.project-info span,.article-type,.article-list span,.knowledge-grid span{font:700 11px "DM Sans",sans-serif;letter-spacing:.14em;color:var(--gold)}.project-info h3{font-size:23px;margin:9px 0}.project-info p{color:var(--muted);margin:0;font-size:15px}.sample-note{color:#929998;font-size:13px;margin:23px 0 0}
.editorial-section{background:#0e1112}.editorial-grid{display:grid;grid-template-columns:1.03fr 1fr;gap:24px}.feature-article{min-height:535px;position:relative;padding:33px;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden;background:linear-gradient(145deg,#31302b,#15191a 65%);border:1px solid #454540}.feature-article h3{font-size:clamp(30px,3vw,42px);margin:0 0 12px}.feature-article p{color:#c3c8c5;margin-bottom:0;max-width:425px}.feature-wave{height:155px;display:flex;align-items:center;justify-content:center;gap:14px;opacity:.6}.feature-wave span{width:3px;background:var(--gold);box-shadow:0 0 30px rgba(208,173,115,.2);height:20%}.feature-wave span:nth-child(2),.feature-wave span:nth-child(8){height:38%}.feature-wave span:nth-child(3),.feature-wave span:nth-child(7){height:67%}.feature-wave span:nth-child(4),.feature-wave span:nth-child(6){height:89%}.feature-wave span:nth-child(5){height:100%}.article-list{border-top:1px solid var(--line)}.article-list article{border-bottom:1px solid var(--line);min-height:132px;padding:17px 0}.article-list h3{font-size:20px;margin:6px 0 3px}.article-list p{font-size:14px;color:var(--muted);margin:0}
.knowledge-section{background:#141719}.knowledge-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.knowledge-grid article{padding:28px 26px 25px;min-height:192px;border:1px solid var(--line);background:#1a1e20}.knowledge-grid h3{font:600 28px "DM Sans","Noto Sans Thai",sans-serif;margin:25px 0 4px}.knowledge-grid p{font-size:15px;color:var(--muted);margin:0}
.contact-section{background:radial-gradient(circle at 15% 85%,#272921,#0b0d0f 50%);border-top:1px solid #343832}.contact-layout{display:grid;grid-template-columns:1fr .88fr;gap:10%;align-items:start}.contact-lead{color:#b7bfbb;max-width:560px;margin:30px 0 0;font-size:17px}.contact-panel{background:#171a1a;border:1px solid #3d423e;padding:31px 34px}.panel-title{font-weight:700;margin-bottom:18px}.contact-row{display:flex;justify-content:space-between;gap:16px;border-top:1px solid var(--line);padding:13px 0;font-family:"DM Sans",sans-serif;font-weight:600}.contact-row small{font:400 13px "Noto Sans Thai",sans-serif;color:var(--muted)}.contact-row a{color:var(--gold);font:600 14px "Noto Sans Thai",sans-serif;text-align:right;text-underline-offset:3px}.contact-row a:hover,.contact-row a:focus-visible{color:#f3d4a1}.contact-note{font-size:13px;color:var(--muted);margin:18px 0 0;line-height:1.65}.site-footer{border-top:1px solid var(--line);background:#080a0b}.footer-inner{min-height:80px;display:flex;align-items:center;justify-content:space-between;gap:25px;color:#a1a7a5;font-size:13px}.footer-inner span:first-child{color:var(--gold);font-family:"DM Sans",sans-serif;font-weight:700;letter-spacing:.14em}.footer-inner a:hover{color:var(--gold)}
@media(max-width:1050px){.primary-nav{gap:15px}.primary-nav a{font-size:12px}.brand-name{font-size:13px}.header-inner{gap:16px}.hero h1{font-size:clamp(70px,10vw,120px)}}
@media(max-width:800px){.shell{width:min(calc(100% - 40px),var(--shell))}.header-inner{min-height:66px}.menu-toggle{display:flex;width:42px;height:42px;border:1px solid var(--line);background:#151819;align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer}.menu-toggle span{width:19px;height:2px;background:var(--gold);transition:transform .2s,opacity .2s}.menu-toggle[aria-expanded="true"] span:first-child{transform:translateY(7px) rotate(45deg)}.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}.menu-toggle[aria-expanded="true"] span:last-child{transform:translateY(-7px) rotate(-45deg)}.primary-nav{display:none;position:absolute;top:65px;left:0;right:0;background:#101315;border-bottom:1px solid var(--line);padding:16px 20px 22px;flex-direction:column;align-items:stretch;gap:0}.primary-nav.is-open{display:flex}.primary-nav a{padding:10px 0;font-size:15px}.primary-nav .nav-contact{margin-top:8px;text-align:center;padding:9px 15px}.hero{min-height:690px}.hero-image{inset:0;background-position:65% center}.hero-shade{background:linear-gradient(90deg,rgba(11,13,15,.95),rgba(11,13,15,.65)),linear-gradient(0deg,#0b0d0f,transparent 60%)}.hero-content{padding-block:100px 130px}.hero-aside{display:none}.section{padding-block:80px}.about-layout,.contact-layout{grid-template-columns:1fr;gap:26px}.about-copy{padding-top:0}.section-heading{align-items:start;flex-direction:column;gap:18px}.section-heading>p{max-width:600px}.services-grid{grid-template-columns:repeat(2,1fr)}.editorial-grid{grid-template-columns:1fr}.feature-article{min-height:420px}.knowledge-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.shell{width:min(calc(100% - 32px),var(--shell))}.brand-name{font-size:12px}.hero{min-height:690px}.hero-content{padding-block:80px 125px}.hero h1{font-size:clamp(59px,14vw,83px);margin-bottom:23px}.hero-discipline{font-size:15px}.hero-description{font-size:15px}.hero-actions{gap:10px}.button{width:100%}.hero-bottom{bottom:21px}.hero-bottom>span:first-child{display:none}.hero-scroll{margin-left:auto}.section{padding-block:66px}.section h2{font-size:clamp(37px,10vw,50px)}.about-copy .lead{font-size:19px}.about-facts{gap:40px}.about-facts strong{font-size:49px}.services-grid,.project-grid,.knowledge-grid{grid-template-columns:1fr}.service-card{min-height:225px}.service-card h3{margin-top:48px}.project-visual{height:205px}.project-visual strong{font-size:91px}.feature-article{min-height:390px;padding:24px}.feature-wave{height:125px}.article-list article{min-height:0;padding-block:20px}.contact-panel{padding:22px}.footer-inner{padding-block:22px;flex-wrap:wrap;min-height:0}.footer-inner span:nth-child(2){display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
.about-pillars{margin-top:34px;border-top:1px solid var(--line)}.about-pillars article{display:grid;grid-template-columns:145px 1fr;gap:14px;padding:15px 0;border-bottom:1px solid var(--line)}.about-pillars h3{margin:0;color:var(--gold);font:700 15px "DM Sans",sans-serif}.about-pillars p{margin:0;color:var(--muted);font-size:15px;line-height:1.65}
@media(max-width:560px){.about-pillars article{grid-template-columns:1fr;gap:3px}}
.projects-section .project-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.projects-section .project-card{display:flex;flex-direction:column;min-width:0}.projects-section .project-visual{height:220px}.projects-section .project-info{display:flex;flex-direction:column;flex:1}.projects-section .project-type{display:block;min-height:3em;font-size:12px;line-height:1.5;letter-spacing:.08em}.projects-section .project-info p{flex:1;line-height:1.7}.project-detail{align-self:flex-start;margin-top:24px;min-height:42px;padding:8px 17px;border:1px solid var(--gold-dark);background:transparent;color:var(--gold);font:700 14px "Noto Sans Thai",sans-serif;opacity:1;cursor:pointer;transition:background .2s,border-color .2s,color .2s}.project-detail:hover,.project-detail:focus-visible{background:var(--gold);border-color:var(--gold);color:#111}.project-detail[disabled]{opacity:.55;cursor:default}.project-detail[disabled]:hover{background:transparent;color:var(--gold);border-color:var(--gold-dark)}
.projects-section .project-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.visual-cayin{background:radial-gradient(circle at 75% 30%,#484337,#252827 38%,#111516 80%)}.projects-section .visual-cayin strong{font-size:clamp(60px,7vw,100px);letter-spacing:-.07em}
@media(max-width:1000px){.projects-section .project-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:650px){.projects-section .project-grid{grid-template-columns:1fr}}
.earbuds-section{background:radial-gradient(circle at 75% 42%,#242521 0%,#171a1b 38%,#111516 78%);border-bottom:1px solid var(--line)}.earbuds-layout{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:clamp(24px,3vw,40px);align-items:center}.earbuds-copy{min-width:0}.earbuds-description{max-width:650px;margin:31px 0 0;color:#c5cbc9;font-size:18px;line-height:1.85}.earbuds-visual{display:grid;place-items:center;min-width:0;min-height:340px;background:transparent;border:none;outline:none;box-shadow:none;overflow:visible}.earbuds-logo{display:block;width:100%;max-width:480px;height:auto;object-fit:contain}
@media(min-width:801px){.primary-nav{gap:clamp(9px,1.4vw,20px)}}
@media(max-width:800px){.earbuds-layout{grid-template-columns:1fr;gap:24px}.earbuds-visual{width:100%;min-height:250px;transform:none}.earbuds-logo{width:min(330px,100%);max-width:90vw}}
@media(max-width:560px){.earbuds-description{font-size:16px;margin-top:23px}.earbuds-visual{min-height:220px}}
.deep-dive-section{background:#101315;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.deep-dive-feature{position:relative;overflow:hidden;min-height:330px;padding:42px;border:1px solid #454038;background:radial-gradient(circle at 85% 30%,#413727 0%,#1a1d1d 35%,#0d1011 78%);display:flex;align-items:center}.deep-dive-copy{position:relative;z-index:2;max-width:680px}.deep-dive-copy>span{font:700 11px "DM Sans",sans-serif;letter-spacing:.17em;color:var(--gold)}.deep-dive-copy h3{font-size:clamp(34px,5vw,58px);margin:12px 0 16px}.deep-dive-copy p{color:#bcc3c0;font-size:16px;max-width:650px}.deep-dive-mark{position:absolute;right:3%;top:50%;transform:translateY(-50%);font:700 clamp(90px,16vw,210px) "DM Sans",sans-serif;letter-spacing:-.1em;color:rgba(208,173,115,.07);line-height:1}@media(max-width:560px){.deep-dive-feature{padding:27px;min-height:360px}.deep-dive-mark{right:-6%;font-size:100px;top:22%}.deep-dive-copy{align-self:flex-end}}
/* Tablet standard: 701–1023px */
@media (min-width:701px) and (max-width:1023px){.shell{width:min(calc(100% - 48px),var(--shell))}.header-inner{min-height:70px}.primary-nav{display:none}.menu-toggle{display:flex;width:42px;height:42px;border:1px solid var(--line);background:#151819;align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer}.menu-toggle span{width:19px;height:2px;background:var(--gold)}.primary-nav.is-open{display:flex;position:absolute;top:69px;left:0;right:0;background:#101315;border-bottom:1px solid var(--line);padding:18px 24px 24px;flex-direction:column;align-items:stretch;gap:0}.primary-nav a{padding:10px 0;font-size:15px}.primary-nav .nav-contact{text-align:center;margin-top:8px}.hero{min-height:700px}.hero-image{inset:0 0 0 20%;background-position:62% center}.hero-content{padding-block:96px 125px}.hero h1{font-size:clamp(76px,12vw,112px)}.hero-aside{display:none}.section{padding-block:88px}.about-layout{grid-template-columns:.9fr 1.1fr;gap:6%}.about-facts{gap:38px}.section-heading{gap:28px}.services-grid{grid-template-columns:repeat(2,1fr)}.projects-section .project-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.editorial-grid{grid-template-columns:1fr}.feature-article{min-height:430px}.knowledge-grid{grid-template-columns:repeat(2,1fr)}.contact-layout{grid-template-columns:1fr;gap:36px}.earbuds-layout{grid-template-columns:1.15fr .85fr}.earbuds-visual{min-height:280px}.deep-dive-feature{padding:36px;min-height:320px}.deep-dive-copy{max-width:620px}.deep-dive-mark{right:-2%;font-size:clamp(120px,20vw,180px)}}