:root{color-scheme:light;--paper: #eef1ed;--sheet: #fffef8;--ink: #121212;--muted: #4d524e;--line: #c6ccc5;--strong-line: #1f1f1f;--accent: #93402e;--cool: #276a70;--dark: #111817;--shell: min(1240px, calc(100% - 64px) )}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:120px}body{margin:0;overflow-x:hidden;background:linear-gradient(90deg,rgb(17 24 23 / 5%) 1px,transparent 1px),linear-gradient(0deg,rgb(17 24 23 / 3%) 1px,transparent 1px),var(--paper);background-size:112px 112px;color:var(--ink);font-family:Inter,Noto Sans TC,PingFang TC,Microsoft JhengHei,Arial,sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}button{font:inherit}.shell{width:var(--shell);margin-inline:auto}.skip-link{position:fixed;top:12px;left:12px;z-index:100;padding:10px 14px;background:var(--dark);color:var(--sheet);opacity:0;pointer-events:none;transform:translateY(-160%)}.skip-link:focus-visible{opacity:1;pointer-events:auto;transform:translateY(0)}:focus-visible{outline:1px solid var(--cool);outline-offset:2px}.site-header{position:static;z-index:20;border-bottom:1px solid var(--line);background:#eef1edf0;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.nav{display:flex;min-height:78px;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;gap:12px;font-weight:900}.brand small{color:var(--muted);font-weight:760}.brand-mark{display:grid;width:44px;aspect-ratio:1;place-items:center;background:var(--dark);color:var(--sheet);font-size:.82rem;font-weight:900;letter-spacing:0}.nav-links{display:flex;align-items:center;gap:28px;color:var(--muted);font-size:.94rem;font-weight:850}.nav-links a:hover,.site-footer a:hover{color:var(--accent)}.nav-cta{padding:9px 15px;border:1px solid var(--strong-line);color:var(--ink)}.nav-toggle{display:none;width:46px;height:44px;border:1px solid var(--line);background:transparent;place-items:center}.nav-toggle span:not(.sr-only){font-size:1.45rem;font-weight:900;line-height:1}.hero{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(540px,.95fr);gap:64px;align-items:start;padding:64px 0 28px}.hero:before{position:absolute;top:78px;left:-28px;color:var(--accent);content:"PROTO INDEX / NTUT EE";font-size:.66rem;font-weight:950;writing-mode:vertical-rl}.hero-copy,.hero-visual,.project-content{min-width:0}.eyebrow{margin:0 0 16px;color:var(--accent);font-size:.74rem;font-weight:950;letter-spacing:0;text-transform:uppercase}.hero h1{max-width:700px;margin:0 0 24px;font-size:4.7rem;font-weight:950;letter-spacing:0;line-height:1;overflow-wrap:anywhere}.hero h1 span{display:block}.hero h1 .accent-line{color:var(--accent)}.hero-intro{max-width:650px;margin:0 0 30px;color:var(--muted);font-size:1.05rem;overflow-wrap:anywhere}.hero-intro strong{color:var(--ink)}.hero-actions,.contact-actions{display:flex;flex-wrap:wrap;gap:12px}.button{display:inline-flex;min-height:50px;align-items:center;justify-content:center;padding:0 22px;border:1px solid var(--strong-line);color:var(--ink);font-weight:900;box-shadow:4px 4px #11181724;transition:transform .16s ease,background .16s ease,color .16s ease}.button:hover{box-shadow:2px 2px #1118172e;transform:translateY(-2px)}.hero-actions .button:after{margin-left:8px;content:"↘"}.button.primary{background:var(--dark);color:var(--sheet)}.button.secondary,.button.outline{background:#fffdf794}.hero-visual{display:grid;gap:12px}.hero-board{position:relative;display:grid;grid-template-rows:minmax(0,1fr) 58px 56px;gap:12px;height:390px;margin:0;overflow:hidden;border:1px solid var(--strong-line);background:linear-gradient(rgba(16,23,22,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(16,23,22,.04) 1px,transparent 1px),var(--sheet);background-size:28px 28px;padding:18px}@media(min-width:641px){.hero-board{box-shadow:0 18px 36px #1118171a}}.board-main{display:grid;grid-template-columns:44px minmax(0,1fr) minmax(0,1.1fr);align-content:stretch;align-items:center;min-height:0;border:1px solid var(--strong-line);background:var(--sheet)}.board-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;min-height:0}.board-main span,.board-main strong,.board-main small{min-width:0;padding:13px 14px;border-bottom:1px solid var(--line)}.board-main span:nth-last-child(-n+3),.board-main strong:nth-last-child(-n+2),.board-main small:last-child{border-bottom:0}.board-main span{color:var(--accent);font-weight:950}.board-main strong{font-size:1.05rem;line-height:1.16;overflow-wrap:anywhere}.board-main small{color:var(--muted);font-size:.76rem;font-weight:800}.board-strip span{display:grid;place-items:center;border:1px solid var(--strong-line);background:var(--sheet);color:var(--ink);font-weight:950}.hero-board figcaption{display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px;align-items:center;margin:0;padding:0 18px;background:#111817f0;color:var(--sheet)}.hero-board figcaption span{color:#f1b58d;font-size:.78rem;font-weight:950}.hero-board figcaption strong{font-size:1.2rem;line-height:1.1}.portfolio-index{position:relative;margin:0;overflow:hidden;border:1px solid var(--strong-line);background:var(--sheet)}.portfolio-head{position:relative;z-index:1;display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px;align-items:center;padding:20px;border-bottom:1px solid var(--strong-line);background:var(--dark);color:var(--sheet)}.portfolio-head span{color:#f1b58d;font-size:.78rem;font-weight:950}.portfolio-head strong,.portfolio-head small{display:block}.portfolio-head strong{font-size:1.3rem;line-height:1.1}.portfolio-head small{margin-top:3px;color:#d7d1c6;font-size:.76rem;font-weight:900}.portfolio-tracks{position:relative;z-index:1;margin:0;padding:0;list-style:none}.portfolio-tracks li{display:grid;grid-template-columns:42px 172px minmax(0,1fr);gap:16px;min-height:104px;align-items:center;padding:16px 18px;border-bottom:1px solid var(--strong-line)}.portfolio-tracks li:last-child{border-bottom:0}.portfolio-tracks li:nth-child(2){background:#eef5f2}.track-number{color:var(--accent);font-size:1.05rem;font-weight:950}.track-copy strong,.track-copy small{display:block}.track-copy strong{font-size:1.05rem;line-height:1.2}.track-copy small{margin-top:6px;color:#414642;font-size:.82rem;font-weight:760}.track-flow{display:grid;grid-template-columns:auto 1fr auto 1fr auto;gap:8px;align-items:center}.track-flow span{font-size:.76rem;font-weight:900}.track-flow i{height:2px;background:var(--cool)}.section{padding:88px 0;border-top:1px solid var(--line);scroll-margin-top:120px}.hero+.section{padding-top:58px}.section-heading{margin-bottom:28px;padding-bottom:12px;border-bottom:1px solid color-mix(in srgb,var(--line) 72%,transparent)}.section-heading h2{margin:0;font-size:3rem;font-weight:950;letter-spacing:0;line-height:1}.timeline{display:grid}.timeline-item{display:grid;grid-template-columns:230px minmax(0,1fr);gap:42px;padding:28px 0;border-top:1px solid var(--line)}.timeline-year{margin:0;color:var(--accent);font-weight:950}.timeline-item h3{margin:0 0 7px;font-size:1.24rem}.timeline-item p:last-child{max-width:760px;margin:0;color:var(--muted)}.skill-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--strong-line);border-right:0;background:var(--sheet)}.skill-card{min-height:220px;padding:26px;border-right:1px solid var(--strong-line)}.skill-card:nth-child(2){background:#eef5f2}.skill-card span{color:var(--accent);font-size:.74rem;font-weight:950}.skill-card h3{margin:64px 0 12px;font-size:1.25rem}.skill-card p{margin:0;color:var(--muted)}.project-heading{display:grid;grid-template-columns:minmax(0,1fr) 440px;gap:36px;align-items:end}.project-heading>p{margin:0;color:var(--muted)}.project-lab{display:grid;grid-template-columns:312px minmax(0,1fr);gap:20px}.project-picker{display:grid;align-content:start;gap:10px;min-width:0}.project-rail-controls{display:grid;grid-template-columns:44px minmax(0,1fr) 44px;border:1px solid var(--strong-line);background:var(--sheet)}.project-rail-controls button{min-height:42px;border:0;background:transparent;color:var(--ink);cursor:pointer;font-size:1.28rem;font-weight:950}.project-rail-controls button:hover,.project-rail-controls button:focus-visible{background:var(--dark);color:var(--sheet)}.project-rail-controls strong{display:grid;place-items:center;border-left:1px solid var(--line);border-right:1px solid var(--line);color:var(--cool);font-size:.84rem}.project-switcher{display:grid;align-content:start;border:1px solid var(--strong-line);background:var(--sheet)}.project-select{display:none;gap:7px;margin-bottom:10px}.project-select span{color:var(--accent);font-size:.74rem;font-weight:950}.project-select select{width:100%;min-height:44px;padding:0 12px;border:1px solid var(--strong-line);background:var(--sheet);color:var(--ink);font:inherit;font-weight:850}.project-switch{position:relative;display:grid;grid-template-columns:46px minmax(0,1fr);gap:4px 12px;min-height:86px;padding:16px;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--ink);cursor:pointer;text-align:left;transition:background .16s ease,box-shadow .16s ease,color .16s ease}.project-switch:last-child{border-bottom:0}.project-switch:hover,.project-switch:focus-visible,.project-switch.is-active{background:var(--dark);color:var(--sheet);box-shadow:inset 6px 0 #f1b58d}.switch-number{grid-row:span 2;color:var(--accent);font-weight:950}.project-switch.is-active .switch-number{color:#f1b58d}.switch-title{overflow-wrap:anywhere;font-weight:950;line-height:1.18}.switch-tags{color:currentcolor;font-size:.74rem;font-weight:760;opacity:.72}.project-detail{position:relative;border:1px solid var(--strong-line);background:var(--sheet);scroll-margin-top:108px;animation:detail-swap .22s ease;overflow:hidden}.project-detail:before{position:absolute;inset:0 0 auto;height:4px;background:linear-gradient(90deg,var(--accent),var(--cool));content:""}.project-detail.is-proof:before{background:linear-gradient(90deg,var(--accent),#bf7656)}.project-detail.is-source:before{background:linear-gradient(90deg,var(--cool),var(--dark))}.project-content{padding:30px}.project-record-head{display:grid;grid-template-columns:1fr;gap:12px;align-items:start;padding-bottom:24px;border-bottom:1px solid var(--line)}.artifact-strip{display:grid;grid-template-columns:minmax(0,1fr) minmax(240px,.62fr);gap:0;margin-top:14px;border:1px solid var(--strong-line);background:var(--sheet)}.artifact-strip>div:first-child{display:grid;gap:1px;align-content:start;padding:12px 14px}.artifact-strip span{color:var(--accent);font-size:.74rem;font-weight:950;text-transform:uppercase}.artifact-list{display:grid;gap:8px;margin:0;padding:0;list-style:none}.artifact-list li{min-height:34px;border-left:3px solid var(--cool);background:#eef5f2;color:var(--ink);font-size:.9rem;font-weight:850;line-height:1.32;overflow-wrap:anywhere}.artifact-list a,.artifact-list li>span{display:block;padding:7px 9px 7px 12px;color:inherit}.artifact-list a:hover,.artifact-list a:focus-visible{background:var(--dark);color:var(--sheet)}.artifact-sequence{display:grid;align-items:stretch;border-left:1px solid var(--strong-line);background:#eef5f2}.artifact-sequence{grid-template-rows:minmax(150px,1fr) auto auto auto;padding:0}.artifact-visual{display:grid;gap:12px;align-content:stretch;padding:14px;border-left:1px solid var(--strong-line);background:linear-gradient(135deg,#eef5f2d6 0,#eef5f2d6 64%,#fffdf7eb 64%),var(--sheet)}.visual-head{display:grid;gap:4px;min-height:54px;align-content:center;padding:9px 10px;border:1px solid var(--strong-line);background:var(--sheet)}.visual-head span{color:var(--accent);font-size:.72rem;font-weight:950;text-transform:uppercase}.visual-head strong{font-size:1rem;line-height:1.18;overflow-wrap:anywhere}.visual-note{margin:0;padding:10px;border-left:3px solid var(--cool);background:#fffdf7c7;color:var(--muted);font-size:.86rem;font-weight:760;line-height:1.45}.visual-media{display:grid;grid-template-columns:repeat(auto-fit,minmax(96px,1fr));gap:8px}.visual-media figure{min-width:0;margin:0;border:1px solid var(--strong-line);background:var(--sheet)}.visual-media img{display:block;width:100%;height:112px;padding:8px;object-fit:contain}.visual-media figcaption{padding:7px 8px;border-top:1px solid var(--line);color:var(--muted);font-size:.72rem;font-weight:850;line-height:1.15}.artifact-sequence img{width:100%;max-height:250px;min-height:156px;object-fit:contain;background:var(--sheet);image-rendering:pixelated}.sequence-controls{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:8px;align-items:center;padding:10px 12px;border-top:1px solid var(--strong-line);background:var(--sheet)}.sequence-controls strong{color:var(--muted);font-size:.82rem;font-weight:850;text-align:center}.sequence-controls button,.sequence-jumps button{min-height:34px;border:1px solid var(--strong-line);background:var(--sheet);cursor:pointer;font-size:.78rem;font-weight:900}.sequence-controls button:hover,.sequence-controls button:focus-visible,.sequence-jumps button:hover,.sequence-jumps button:focus-visible{background:var(--dark);color:var(--sheet)}.artifact-sequence input{width:100%;margin:10px 12px 8px;width:calc(100% - 24px);accent-color:var(--cool)}.sequence-jumps{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;padding:0 12px 12px}.tag{margin:0 0 10px;color:var(--accent);font-size:.74rem;font-weight:950;letter-spacing:0;text-transform:uppercase}.project-kicker{display:inline-flex;margin-bottom:8px;padding:4px 8px;border:1px solid var(--line);color:var(--cool);font-size:.7rem;font-weight:950;letter-spacing:0;text-transform:uppercase}.project-content h3{margin:0;font-size:2rem;font-weight:950;letter-spacing:0;line-height:1.04;overflow-wrap:break-word}.project-content p:not(.tag){margin:0;color:var(--muted);overflow-wrap:anywhere}.detail-tabs{display:flex;flex-wrap:wrap;gap:0;margin-top:20px;border-bottom:1px solid var(--strong-line)}.detail-tab{min-height:44px;padding:0 18px;border:0;border-right:1px solid var(--line);background:transparent;color:var(--muted);cursor:pointer;font-weight:950}.detail-tab:first-child{border-left:1px solid var(--line)}.detail-tab:hover,.detail-tab:focus-visible,.detail-tab.is-active{background:var(--dark);color:var(--sheet);box-shadow:inset 0 -4px #f1b58d}.proof-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));margin:24px 0 0;border-top:1px solid var(--strong-line);border-left:1px solid var(--strong-line)}.proof-grid div{min-height:112px;padding:15px 14px;border-right:1px solid var(--strong-line);border-bottom:1px solid var(--strong-line)}.proof-grid dt{margin:0 0 9px;color:var(--accent);font-size:.74rem;font-weight:950;text-transform:uppercase}.proof-grid dd{margin:0;color:var(--ink);font-weight:760;line-height:1.55}.flow-board{display:grid;gap:0;margin-top:24px;border:1px solid var(--strong-line)}.flow-board.is-running{box-shadow:inset 4px 0 0 var(--cool)}.trace-head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;padding:16px;border-bottom:1px solid var(--strong-line);background:#eef5f2}.trace-head span{display:block;margin-bottom:4px;color:var(--cool);font-size:.74rem;font-weight:950;text-transform:uppercase}.trace-head strong{display:block;font-size:1.05rem;line-height:1.25}.trace-head em{display:inline-flex;margin-top:9px;padding:4px 8px;border:1px solid var(--cool);background:var(--sheet);color:var(--cool);font-size:.78rem;font-style:normal;font-weight:950}.trace-controls{display:flex;gap:8px}.trace-controls button{min-width:68px;border:1px solid var(--strong-line);background:var(--sheet);color:var(--ink);cursor:pointer;font-size:.82rem;font-weight:950}.trace-controls button:hover,.trace-controls button:focus-visible{background:var(--dark);color:var(--sheet)}.trace-meter{grid-column:1 / -1;height:5px;background:#2f6f7329}.trace-meter span{display:block;height:100%;background:var(--cool);transition:width .16s ease}.flow-board.is-running .trace-meter span{background:linear-gradient(90deg,var(--cool),#91c8c4,var(--cool));background-size:180% 100%;animation:trace-flow .9s linear infinite}.flow-node{position:relative;display:grid;grid-template-columns:58px minmax(0,1fr);align-items:center;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--ink);cursor:pointer;text-align:left;transition:background .16s ease,box-shadow .16s ease}.flow-node:last-of-type{border-bottom:0}.flow-node span{display:grid;min-height:58px;place-items:center;border-right:1px solid var(--line);color:var(--cool);font-weight:950}.flow-node strong{padding:14px 16px}.flow-node:hover,.flow-node:focus-visible,.flow-node.is-current{background:#eef5f2;box-shadow:inset 6px 0 0 var(--cool)}.flow-node.is-current span{background:var(--cool);color:var(--sheet)}.flow-board.is-running .flow-node.is-current strong{text-decoration:underline;text-decoration-color:var(--cool);text-decoration-thickness:2px;text-underline-offset:4px}.flow-board p{padding:14px 16px;border-top:1px solid var(--line);color:var(--muted)}.source-panel{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin-top:24px;border-top:1px solid var(--strong-line);border-left:1px solid var(--strong-line)}.source-panel a{min-height:112px;padding:15px;border-right:1px solid var(--strong-line);border-bottom:1px solid var(--strong-line);transition:background .16s ease,box-shadow .16s ease}.source-panel a:hover,.source-panel a:focus-visible{background:#eef5f2;box-shadow:inset 0 -4px 0 var(--cool)}.source-panel span,.source-panel strong{display:block}.source-panel span{margin-bottom:18px;color:var(--accent);font-size:.82rem;font-weight:950}.source-panel strong{overflow-wrap:anywhere;font-size:.95rem;line-height:1.35}.text-link{display:inline-flex;align-items:center;gap:7px;margin-top:22px;color:var(--ink);font-weight:950}.text-link:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px}.contact{padding-bottom:108px}.contact-band{padding:62px;background:var(--dark);color:var(--sheet)}.contact-band .eyebrow{color:#f1b58d}.contact-band h2{max-width:980px;margin:0 0 18px;font-size:3.2rem;font-weight:950;letter-spacing:0;line-height:1}.contact-band p:not(.eyebrow){max-width:620px;margin:0 0 30px;color:#d7d1c6}.contact-band .button{border-color:#fffdf79e;color:var(--sheet)}.contact-band .button.primary{background:var(--sheet);color:var(--ink)}.contact-band .button.outline{background:transparent;color:var(--sheet)}.contact-band .button.outline:hover{background:#fffdf724}.contact-band small{display:block;margin-top:22px;color:#beb7ac}.site-footer{display:flex;justify-content:space-between;gap:18px;padding:0 0 42px;color:var(--muted);font-size:.88rem}.site-footer p{margin:0}.sr-only{position:absolute;overflow:hidden;width:1px;height:1px;clip-path:inset(50%);white-space:nowrap}@keyframes detail-swap{0%{opacity:.72;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes trace-flow{0%{background-position:0 0}to{background-position:180% 0}}@media(max-width:1040px){.hero,.project-record-head{grid-template-columns:1fr}.hero{min-height:auto}.hero:before{display:none}.hero h1{font-size:3.7rem}}@media(max-width:900px){:root{--shell: min(100% - 36px, 720px)}.project-heading{display:block}.project-heading>p{margin-top:24px}.timeline-item,.project-lab,.skill-grid,.artifact-strip,.proof-grid,.source-panel{grid-template-columns:1fr}.project-switcher{grid-template-columns:repeat(2,minmax(0,1fr))}.project-switch{border-right:1px solid var(--line)}.artifact-sequence,.artifact-visual{border-left:0;border-top:1px solid var(--strong-line)}}@media(max-width:640px){:root{--shell: calc(100vw - 32px) }.shell{width:min(358px,calc(100dvw - 32px));margin-left:16px;margin-right:0}.brand small{display:none}.nav{justify-content:flex-start}.nav-toggle{display:grid;margin-left:14px;border-color:var(--strong-line);background:var(--sheet)}.nav-links{position:absolute;top:78px;left:16px;right:16px;display:none;flex-direction:column;align-items:stretch;gap:0;border:1px solid var(--strong-line);background:var(--sheet)}.nav-links.is-open{display:flex}.nav-links a{padding:13px 14px;border-bottom:1px solid var(--line)}.nav-links .nav-cta{margin:8px;border-color:var(--strong-line);background:var(--dark);color:var(--sheet);text-align:center}.nav-links a:last-child{border-bottom:0}.hero{gap:22px;padding:28px 0 22px}.portfolio-head{grid-template-columns:1fr;padding:10px 12px}.hero-board{height:auto;grid-template-rows:44px 58px;gap:8px;padding:12px}.board-strip{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.board-main{display:none}.board-strip span{font-size:.78rem}.hero-board figcaption{grid-template-columns:1fr;gap:4px;padding:12px}.portfolio-head span{grid-row:auto}.portfolio-tracks li{grid-template-columns:34px minmax(0,1fr);gap:2px 10px;min-height:76px;padding:8px 12px}.track-flow{grid-column:2;gap:6px}.track-copy small{margin-top:2px}.track-flow span{font-size:.72rem}.hero h1{margin-bottom:20px;font-size:2.18rem}.hero-intro{margin-bottom:22px;font-size:.96rem}.section{padding:42px 0}.hero+.section{padding-top:36px}.section-heading h2,.contact-band h2{font-size:2.2rem}.timeline-item{gap:8px;padding:24px 0}.skill-card{min-height:auto}.skill-card h3{margin-top:36px}.project-switcher{display:none}.project-select{display:grid;margin-bottom:0}.project-select select{min-height:48px}.artifact-strip{gap:12px;border:0;background:transparent}.artifact-strip>div:first-child,.artifact-visual{border:1px solid var(--strong-line);background:var(--sheet)}.artifact-strip>div:first-child{padding:14px}.artifact-visual{gap:15px;padding:16px}.visual-head{min-height:auto;padding:14px}.visual-media{grid-template-columns:1fr;padding-bottom:0}.project-content{padding:22px 18px}.project-content h3{font-size:1.75rem}.detail-tab{flex:1 1 0;min-width:0;padding:0 8px;border-left:1px solid var(--line);border-bottom:1px solid var(--line)}.trace-head{grid-template-columns:1fr}.contact-band{padding:34px 22px}.contact-band h2{font-size:1.85rem;line-height:1.08}.contact-actions,.site-footer{flex-direction:column}.hero-actions{display:grid;grid-template-columns:1fr}.hero-actions .button{min-height:44px;padding:0 10px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto;transition-duration:.001ms!important;animation-duration:.001ms!important}}
