/* /tuning — Packard's tuning page (Nov 11 2026). Dark and light sections alternate; one card style per surface. */
.tn{--tn-ink:#0E0D0B;--tn-panel:#171613;--tn-line:#2A2823;--tn-paper:#F4F6F8;--tn-pline:#DDE1E6;--tn-red:#FF020A;--tn-steel:#7E858E;--tn-sub:#C7CBD1;--tn-body:#3A3D42}
.tn section{padding:clamp(64px,8vw,112px) 0;position:relative}
.tn .dark{background:var(--tn-ink);color:#F4F6F8}
.tn .light{background:var(--tn-paper);color:var(--tn-ink)}
.tn .white{background:#fff;color:var(--tn-ink)}
.tn h2{margin:10px 0 0}
.tn .tn-eb{font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--tn-red);margin:0}
.tn .tn-sub{font-family:var(--body);font-size:clamp(17px,1.6vw,20px);line-height:1.55;max-width:62ch;margin:16px 0 0}
.tn .dark .tn-sub{color:var(--tn-sub)}
.tn .light .tn-sub,.tn .white .tn-sub{color:var(--tn-body)}
.tn p{font-family:var(--body)}
.tn-ic{width:28px;height:28px;flex:0 0 28px;display:block}
.tn a.tn-more{display:inline-flex;align-items:center;gap:8px;font-family:var(--disp);font-weight:700;font-size:16px;letter-spacing:.06em;text-transform:uppercase;text-decoration:none;color:var(--tn-red)}
.tn a.tn-more:hover{text-decoration:underline}

/* hero */
.tn-hero{background:var(--tn-ink);color:#F4F6F8;padding:clamp(150px,16vw,190px) 0 clamp(56px,7vw,88px);border-bottom:1px solid var(--tn-line);overflow:hidden}
.tn-hero .wrap{position:relative;z-index:1}
.tn-hero h1{font-size:clamp(48px,8vw,104px);margin:14px 0 0}
.tn-hero .lede{margin-top:24px}
.tn-jump{display:flex;flex-wrap:wrap;gap:10px;margin:30px 0 0;padding:0;list-style:none}
.tn-jump a{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border:1px solid #3A3832;border-radius:999px;font-family:var(--disp);font-weight:700;font-size:15px;letter-spacing:.06em;text-transform:uppercase;text-decoration:none;color:#F4F6F8;background:#141310}
.tn-jump a:hover{border-color:var(--tn-red)}
.tn-jump img{width:20px;height:20px}
.tn-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin:48px 0 0;border-top:1px solid var(--tn-line);border-bottom:1px solid var(--tn-line);max-width:880px}
.tn-stats div{padding:22px 20px 20px 0;border-right:1px solid var(--tn-line)}
.tn-stats div+div{padding-left:20px}
.tn-stats div:last-child{border-right:0}
.tn-stats b{display:block;font-family:var(--disp);font-weight:800;font-size:clamp(34px,4.4vw,52px);line-height:1;letter-spacing:-.02em}
.tn-stats b small{font-size:.42em;letter-spacing:.04em;margin-left:4px;color:var(--tn-sub)}
.tn-stats span{display:block;margin-top:8px;font-family:var(--body);font-size:15px;line-height:1.4;color:var(--tn-sub)}
.tn-hero-art{position:absolute;right:max(var(--gut),calc((100vw - 1360px)/2 + var(--gut)));bottom:clamp(40px,6vw,80px);display:flex;align-items:flex-end;pointer-events:none;z-index:0}
.tn-hero-art img{width:clamp(96px,10vw,150px);height:auto;filter:drop-shadow(0 18px 28px rgba(0,0,0,.55))}
.tn-hero-art img+img{margin-left:-26px}
.tn-hero-art img:nth-child(2){width:clamp(112px,11.5vw,172px);position:relative;z-index:2}
@media(max-width:1100px){.tn-hero-art{display:none}}
@media(max-width:640px){.tn-stats{grid-template-columns:1fr}.tn-stats div,.tn-stats div+div{padding:16px 0;border-right:0;border-bottom:1px solid var(--tn-line)}.tn-stats div:last-child{border-bottom:0}}

/* product cards (light) */
.tn-grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:40px}
.tn-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--tn-pline);border-radius:10px;overflow:hidden;color:var(--tn-ink);text-decoration:none;transition:border-color .2s,box-shadow .2s,transform .2s}
a.tn-card:hover{border-color:#0E0D0B;box-shadow:0 14px 32px rgba(14,13,11,.10);transform:translateY(-2px)}
.tn-card-art{height:190px;display:flex;align-items:center;justify-content:center;background:#0E0D0B;padding:18px}
.tn-card-art img{max-height:150px;max-width:100%;width:auto;height:auto}
.tn-card-art.pair img{max-height:120px}
.tn-card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.tn-card .tn-mach{font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:#5F6369}
.tn-card h3{margin:0;font-size:clamp(24px,2.3vw,30px);line-height:1}
.tn-card ul{list-style:none;margin:4px 0 0;padding:0;display:flex;flex-direction:column;gap:7px}
.tn-card li{position:relative;padding-left:16px;font-family:var(--body);font-size:16px;line-height:1.4;color:var(--tn-body)}
.tn-card li:before{content:"";position:absolute;left:0;top:.55em;width:7px;height:7px;background:var(--tn-red);border-radius:1px}
.tn-how{display:inline-flex;align-items:center;gap:8px;align-self:flex-start;margin-top:6px;padding:6px 10px;border:1px solid var(--tn-pline);border-radius:6px;font-family:var(--disp);font-weight:700;font-size:14px;letter-spacing:.06em;text-transform:uppercase;color:var(--tn-ink)}
.tn-how img{width:20px;height:20px}
.tn-card-foot{margin-top:auto;padding-top:14px;display:flex;align-items:baseline;justify-content:space-between;gap:12px;border-top:1px solid var(--tn-pline)}
.tn-price{font-family:var(--disp);font-weight:800;font-size:28px;letter-spacing:-.01em}
.tn-price small{font-family:var(--body);font-weight:500;font-size:14px;color:#5F6369;margin-right:6px;letter-spacing:0}
.tn-go{font-family:var(--disp);font-weight:700;font-size:15px;letter-spacing:.06em;text-transform:uppercase;color:var(--tn-red)}
.tn-hw{margin-top:48px}
.tn-hw h3{margin:0;font-size:clamp(22px,2vw,28px)}
.tn-hw-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:18px}
.tn-hwc{display:flex;gap:14px;align-items:center;padding:16px 18px;background:#fff;border:1px solid var(--tn-pline);border-radius:10px;text-decoration:none;color:var(--tn-ink)}
.tn-hwc:hover{border-color:#0E0D0B}
.tn-hwc img{width:40px;height:40px;flex:0 0 40px}
.tn-hwc b{display:block;font-family:var(--disp);font-size:19px;line-height:1.1;text-transform:uppercase}
.tn-hwc span{display:block;margin-top:4px;font-family:var(--body);font-size:14px;color:#5F6369}
.tn-hwc .tn-stock{font-weight:600;color:#1E7D3A}
.tn-hwc .tn-stock.out{color:#8A8F96}
.tn-note{margin:16px 0 0;font-family:var(--body);font-size:15px;line-height:1.5;color:#5F6369;max-width:70ch}
@media(max-width:900px){.tn-grid3,.tn-hw-grid{grid-template-columns:1fr}}

/* already tuned (dark) */
.tn-grid4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:40px}
.tn-dcard{display:flex;flex-direction:column;gap:12px;padding:24px;background:var(--tn-panel);border:1px solid var(--tn-line);border-radius:10px;color:#F4F6F8;text-decoration:none;transition:border-color .2s}
a.tn-dcard:hover{border-color:var(--tn-red)}
.tn-dcard .tn-ic{width:34px;height:34px}
.tn-dcard h3{margin:0;font-size:24px;line-height:1.02}
.tn-dcard p{margin:0;font-size:16px;line-height:1.5;color:var(--tn-sub)}
.tn-dcard .tn-go{margin-top:auto;padding-top:6px}
@media(max-width:1000px){.tn-grid4{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.tn-grid4{grid-template-columns:1fr}}

/* what an ECU is (white) */
.tn-ecu{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(28px,5vw,72px);align-items:center}
.tn-ecu p{font-size:18px;line-height:1.6;color:var(--tn-body);margin:16px 0 0}
.tn-ecu-fig{margin:0}
.tn-ecu-fig svg{display:block;width:100%;height:auto}
.tn-ecu-fig figcaption{margin-top:10px;font-family:var(--body);font-size:13px;color:#7E858E}
.tn-flow{stroke:#C9CED4;stroke-width:2;fill:none}
.tn-pulse{stroke:var(--tn-red);stroke-width:2.5;fill:none;stroke-dasharray:10 150;stroke-linecap:round;animation:tnFlow 2.6s linear infinite}
.tn-pulse.d1{animation-delay:-.4s}.tn-pulse.d2{animation-delay:-.9s}.tn-pulse.d3{animation-delay:-1.3s}.tn-pulse.d4{animation-delay:-1.8s}.tn-pulse.d5{animation-delay:-2.2s}
@keyframes tnFlow{from{stroke-dashoffset:160}to{stroke-dashoffset:0}}
.tn-chip-led{animation:tnLed 1.3s ease-in-out infinite}
@keyframes tnLed{0%,100%{opacity:.35}50%{opacity:1}}
@media(max-width:900px){.tn-ecu{grid-template-columns:1fr}}

/* what a tune changes (dark) */
.tn-map{margin-top:40px;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(24px,4vw,56px);align-items:start}
.tn-map-box{background:var(--tn-panel);border:1px solid var(--tn-line);border-radius:10px;padding:22px}
.tn-toggle{display:inline-flex;border:1px solid #3A3832;border-radius:999px;padding:3px;gap:3px}
.tn-toggle button{appearance:none;border:0;border-radius:999px;padding:8px 16px;background:transparent;color:var(--tn-sub);font-family:var(--disp);font-weight:700;font-size:15px;letter-spacing:.06em;text-transform:uppercase;cursor:pointer}
.tn-toggle button[aria-pressed="true"]{background:var(--tn-red);color:#fff}
.tn-table{margin-top:16px;display:grid;grid-template-columns:52px repeat(8,minmax(0,1fr));gap:3px;font-family:var(--mono);font-size:12px}
.tn-table .h{color:var(--tn-steel);text-align:center;padding:4px 0;font-weight:700}
.tn-table .r{color:var(--tn-steel);display:flex;align-items:center;font-weight:700}
.tn-table .c{border-radius:3px;text-align:center;padding:8px 0;font-weight:700;color:#0E0D0B;transition:background-color .5s ease,color .5s ease}
.tn-axis{display:flex;justify-content:space-between;margin-top:8px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--tn-steel)}
.tn-map-cap{margin:12px 0 0;font-size:13px;line-height:1.5;color:var(--tn-steel)}
.tn-map-copy h3{margin:0;font-size:clamp(24px,2.4vw,32px)}
.tn-map-copy p{font-size:17px;line-height:1.6;color:var(--tn-sub);margin:14px 0 0}
.tn-changes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:40px}
.tn-chg{display:grid;grid-template-columns:36px 1fr;gap:4px 14px;padding:20px;background:var(--tn-panel);border:1px solid var(--tn-line);border-radius:10px}
.tn-chg img{width:36px;height:36px;grid-row:span 3}
.tn-chg b{font-family:var(--disp);font-size:20px;line-height:1.1;text-transform:uppercase}
.tn-chg p{margin:0;font-size:15.5px;line-height:1.5;color:var(--tn-sub)}
.tn-chg em{font-style:normal;font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--tn-red)}
@media(max-width:1000px){.tn-map{grid-template-columns:1fr}.tn-changes{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.tn-changes{grid-template-columns:1fr}.tn-table{grid-template-columns:40px repeat(8,minmax(0,1fr));font-size:10.5px}.tn-table .c{padding:6px 0}}

/* how tuning works (light) — two paths */
.tn-paths{display:inline-flex;margin-top:32px;border:1px solid var(--tn-pline);border-radius:999px;padding:3px;gap:3px;background:#fff}
.tn-paths button{appearance:none;border:0;border-radius:999px;padding:10px 18px;background:transparent;color:var(--tn-body);font-family:var(--disp);font-weight:700;font-size:16px;letter-spacing:.06em;text-transform:uppercase;cursor:pointer}
.tn-paths button[aria-selected="true"]{background:#0E0D0B;color:#fff}
.tn-path{margin-top:28px}
.tn-path[hidden]{display:none}
.tn-path-lead{display:flex;flex-wrap:wrap;gap:10px 22px;align-items:baseline;margin:0 0 20px}
.tn-path-lead b{font-family:var(--disp);font-size:24px;text-transform:uppercase}
.tn-path-lead span{font-family:var(--body);font-size:16px;color:var(--tn-body)}
.tn-steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;counter-reset:tn}
.tn-steps li{display:flex;flex-direction:column;gap:10px;padding:18px;background:#fff;border:1px solid var(--tn-pline);border-radius:10px}
.tn-steps .scene{display:block;width:100%;height:auto;aspect-ratio:16/10;object-fit:contain}
.tn-steps .scene img{display:block;width:100%;height:auto}
.tn-steps .ic-scene{display:flex;align-items:center;justify-content:center;aspect-ratio:16/10;background:#0E0D0B;border-radius:6px}
.tn-steps .ic-scene img{width:72px;height:72px}
.tn-steps b{font-family:var(--disp);font-size:21px;line-height:1.1;text-transform:uppercase}
.tn-steps b i{font-style:normal;color:var(--tn-red);margin-right:8px}
.tn-steps p{margin:0;font-size:15.5px;line-height:1.5;color:var(--tn-body)}
.tn-hpt{display:flex;flex-wrap:wrap;align-items:center;gap:18px 28px;margin-top:22px;padding:18px 20px;background:#fff;border:1px solid var(--tn-pline);border-radius:10px}
.tn-hpt img{width:min(100%,340px);height:auto}
.tn-hpt p{margin:0;flex:1 1 320px;font-size:16px;line-height:1.5;color:var(--tn-body)}
@media(max-width:1000px){.tn-steps{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.tn-steps{grid-template-columns:1fr}.tn-paths{display:flex;width:100%}.tn-paths button{flex:1;padding:10px 8px;font-size:14px}}

/* fuel (dark) */
.tn-fuel{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(28px,5vw,64px);align-items:center;margin-top:8px}
.tn-fuel p{font-size:18px;line-height:1.6;color:var(--tn-sub);margin:16px 0 0}
.tn-fuel-art{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.tn-fuel-art picture,.tn-fuel-art img{display:block;width:100%;height:auto}
.tn-alt{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:22px}
.tn-alt div{padding:14px 16px;background:var(--tn-panel);border:1px solid var(--tn-line);border-radius:10px}
.tn-alt b{display:block;font-family:var(--disp);font-weight:800;font-size:26px;line-height:1}
.tn-alt span{display:block;margin-top:6px;font-size:14px;color:var(--tn-sub)}
@media(max-width:900px){.tn-fuel{grid-template-columns:1fr}}
@media(max-width:520px){.tn-fuel-art{grid-template-columns:1fr}.tn-alt{grid-template-columns:1fr}}

/* questions (white) */
.tn-faq{max-width:860px;margin-top:28px}
.tn-faq details{border-top:1px solid var(--tn-pline)}
.tn-faq details:last-child{border-bottom:1px solid var(--tn-pline)}
.tn-faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:12px;padding:18px 36px 18px 0;position:relative;font-family:var(--disp);font-weight:700;font-size:21px;line-height:1.2;text-transform:uppercase;color:var(--tn-ink)}
.tn-faq summary::-webkit-details-marker{display:none}
.tn-faq summary:after{content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);font-size:26px;color:var(--tn-red)}
.tn-faq details[open] summary:after{content:"\2212"}
.tn-faq details p{margin:0 0 20px;font-size:17px;line-height:1.6;color:var(--tn-body);max-width:70ch}

/* links (dark) */
.tn-links{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin-top:32px}
.tn-links a{display:flex;flex-direction:column;gap:6px;padding:18px;background:var(--tn-panel);border:1px solid var(--tn-line);border-radius:10px;text-decoration:none;color:#F4F6F8}
.tn-links a:hover{border-color:var(--tn-red)}
.tn-links b{font-family:var(--disp);font-size:20px;text-transform:uppercase}
.tn-links span{font-size:14px;line-height:1.45;color:var(--tn-sub)}
@media(max-width:1000px){.tn-links{grid-template-columns:1fr 1fr}}

@media (prefers-reduced-motion:reduce){.tn-pulse,.tn-chip-led{animation:none}.tn-pulse{stroke-dasharray:none;opacity:.25}.tn-table .c{transition:none}.tn-card,a.tn-card:hover{transition:none;transform:none}}

/* the template's own details/summary styling stays out of the questions list */
.tn .tn-faq details{background:none;border-left:0;border-right:0;border-radius:0;margin:0;padding:0;box-shadow:none}
.tn .tn-faq summary{background:none;color:var(--tn-ink)}
.tn-hero-art{bottom:auto;top:clamp(190px,17vw,250px)}
@media(max-width:1280px){.tn-hero-art img{width:clamp(88px,8.5vw,120px)}.tn-hero-art img:nth-child(2){width:clamp(100px,10vw,140px)}}