/* HVAC Charge Pro — shared design system */
:root{color-scheme:dark;--bg:#07111f;--surface:#0d1d30;--line:#263b52;--text:#f2f6fc;--muted:#b0bfd1;--blue:#65baff;--cyan:#89e4ef;--max:1160px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased}a{color:var(--blue);text-underline-offset:5px}a:hover{color:var(--cyan)}a:focus-visible,summary:focus-visible{outline:3px solid var(--cyan);outline-offset:6px;border-radius:4px}::selection{background:#254e79;color:white}.wrap{width:min(calc(100% - 48px),var(--max));margin-inline:auto}.skip{position:absolute;left:24px;top:-80px;background:white;color:#07111f;padding:10px;z-index:20}.skip:focus{top:12px}.header{border-bottom:1px solid var(--line);background:#091523}.nav{min-height:90px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;color:var(--text);text-decoration:none;font-size:17px;font-weight:700;letter-spacing:-.4px}.mark{width:40px;height:40px;border-radius:12px;background:#153958;border:1px solid #4275a1;display:grid;place-items:center;color:var(--cyan);font-size:24px;font-weight:500}.navlinks{display:flex;gap:28px;align-items:center}.navlinks a{font-size:14px;text-decoration:none;color:var(--muted)}.navlinks a:hover,.navlinks [aria-current]{color:white}.eyebrow{font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:700;color:var(--cyan);margin:0 0 20px}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.12;letter-spacing:-.045em}h1{font-size:clamp(42px,5.2vw,68px);margin-bottom:26px;font-weight:650}h2{font-size:clamp(30px,3.3vw,44px);margin-bottom:22px;font-weight:620}h3{font-size:22px;letter-spacing:-.025em}p{margin-bottom:20px}.muted,.lead{color:var(--muted)}.lead{font-size:19px;max-width:590px}.hero{padding:96px 0 82px;display:grid;grid-template-columns:1.15fr 1fr;gap:76px;align-items:center}.hero h1 span{color:var(--blue)}.actions{display:flex;gap:18px;align-items:center;flex-wrap:wrap;margin:30px 0 16px}.button{display:inline-flex;min-height:48px;align-items:center;justify-content:center;padding:12px 22px;border-radius:10px;background:var(--blue);color:#07111f;text-decoration:none;font-size:14px;font-weight:700}.button:hover{background:var(--cyan);color:#07111f}.button.secondary{background:transparent;color:var(--text);border:1px solid #486078}.release{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;max-width:100%;padding:12px 24px;background:#e9f2ff;color:#102239;border-radius:10px;line-height:1.3;text-align:center;min-height:64px}.release-kicker{font-size:11px;font-weight:500;color:#42556c;letter-spacing:.03em}.release-label{font-size:16px;font-weight:650;letter-spacing:-.02em}.fine{font-size:12px;color:var(--muted)}.instrument{position:relative;background:linear-gradient(145deg,#142a42,#0b192b);border:1px solid #355373;border-radius:24px;padding:26px;box-shadow:0 30px 70px #02070d66}.instrument-head{display:flex;justify-content:space-between;gap:12px;font-size:12px;color:var(--muted);padding-bottom:22px}.status{color:var(--cyan)}.readout{padding:24px 22px;background:#091523;border:1px solid var(--line);border-radius:14px;margin-bottom:12px}.readout-label{font-size:13px;color:var(--muted);display:flex;justify-content:space-between}.reading{font-size:48px;line-height:1.4;letter-spacing:-.05em;font-weight:600;color:var(--blue)}.reading small{font-size:18px;font-weight:400;color:var(--muted)}.formula{font-size:12px;color:var(--muted);margin:0}.minirow{display:flex;gap:10px;margin-top:22px}.minirow span{flex:1;border-top:1px solid #38516d;padding-top:12px;color:var(--muted);font-size:11px}.illustration-note{margin:14px 0 0;font-size:11px;color:var(--muted);text-align:center}.strip{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:25px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}.strip b{display:block;font-weight:600;color:var(--text);font-size:15px}.section{padding:92px 0;border-bottom:1px solid var(--line)}.section-head{max-width:660px;margin-bottom:42px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.card{background:var(--surface);border:1px solid var(--line);padding:30px;border-radius:16px}.card p{color:var(--muted);font-size:15px;margin-bottom:0}.number{font-size:12px;letter-spacing:.12em;color:var(--blue);display:block;margin-bottom:28px}.split{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:start}.list{margin:0;padding:0;list-style:none}.list li{padding:20px 0;border-bottom:1px solid var(--line);color:var(--muted)}.list li:first-child{padding-top:0}.list strong{color:var(--text);display:block;font-size:18px;margin-bottom:4px}.pro{background:linear-gradient(120deg,#112d49,#0c1b2e);border:1px solid #36597b;border-radius:20px;padding:48px;display:grid;grid-template-columns:1.2fr 1fr;gap:50px}.pro h2{margin-bottom:16px}.pro p{color:var(--muted)}.tag{display:inline-block;border:1px solid #52799c;border-radius:6px;padding:3px 9px;color:var(--cyan);font-size:11px;letter-spacing:.1em;margin-bottom:18px}.callout{border-left:3px solid var(--blue);padding-left:24px;color:var(--muted)}.cta{padding:80px 0;text-align:center}.cta .lead{margin-inline:auto}.cta .actions{justify-content:center}.footer{padding:30px 0;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}.footer-inner{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}.footer-links{display:flex;flex-wrap:wrap;gap:24px}.footer a{color:var(--muted)}.page-intro{padding:72px 0 40px;max-width:800px}.page-intro h1{font-size:clamp(40px,5vw,60px)}.support-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:36px}.support-grid .card p{margin-bottom:16px}.support-bottom{max-width:800px;padding-bottom:72px}.support-bottom ul{color:var(--muted);padding-left:22px}.legal-layout{display:grid;grid-template-columns:220px minmax(0,760px);gap:64px;padding:20px 0 80px}.toc{align-self:start;font-size:13px}.toc a{display:block;color:var(--muted);padding:7px 0}.legal section{margin-bottom:38px;scroll-margin-top:25px}.legal h2{font-size:25px;letter-spacing:-.025em}.legal p,.legal li{color:var(--muted)}.legal ul{padding-left:23px}.legal .callout{padding:20px 24px;background:var(--surface)}.legal .callout p:last-child{margin-bottom:0}.legal a{overflow-wrap:anywhere}
@media(max-width:900px){.hero{gap:35px;padding-top:64px}.hero h1{font-size:48px}.grid{grid-template-columns:1fr}.grid .card{display:grid;grid-template-columns:40px 1fr;column-gap:16px}.grid .card p{grid-column:2}.grid .number{grid-row:1/3}.split{gap:36px}.pro{gap:30px;padding:32px}.legal-layout{grid-template-columns:170px minmax(0,1fr);gap:28px}}
@media(max-width:640px){.wrap{width:calc(100% - 36px)}.nav{min-height:100px;gap:14px;align-items:flex-start;justify-content:center;flex-direction:column;padding-block:16px}.navlinks{gap:24px}.hero{grid-template-columns:1fr;padding:50px 0 42px;gap:40px}.hero h1{font-size:46px}.lead{font-size:17px}.instrument{padding:20px}.strip{grid-template-columns:1fr;gap:16px}.section{padding:56px 0}.split,.pro,.support-grid,.legal-layout{grid-template-columns:1fr}.pro{gap:20px;padding:26px}.toc{border-bottom:1px solid var(--line);padding-bottom:24px}.legal-layout{gap:34px}.page-intro{padding-top:48px}.cta{padding:56px 0}.footer-inner{flex-direction:column}.grid .card{padding:24px}.support-bottom{padding-bottom:48px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* ---- SEO pass 2026-10-17: additions only; existing rules above are unchanged ---- */
.fine+.fine{margin-top:-8px}
.chips{display:flex;flex-wrap:wrap;gap:10px;list-style:none;margin:0 0 22px;padding:0}.chips li{border:1px solid #36597b;background:var(--surface);color:var(--text);border-radius:999px;padding:6px 14px;font-size:14px;font-weight:600}
.compare{margin-top:28px;grid-template-columns:repeat(2,minmax(0,1fr))}.ticks{margin:0;padding-left:20px;color:var(--muted);font-size:15px}.ticks li{margin-bottom:8px}
.more{margin:28px 0 0}.faq-list{max-width:800px}.faq{border-bottom:1px solid var(--line);padding:4px 0}.faq summary{cursor:pointer;font-size:18px;font-weight:600;padding:16px 0;list-style-position:outside}.faq p{color:var(--muted);margin:0 0 18px}
.guide-grid{grid-template-columns:repeat(2,minmax(0,1fr));margin-bottom:48px}.card h2,.card h3{margin-bottom:10px}.card h2{font-size:24px}.card h2 a,.card h3 a{color:var(--text);text-decoration:none}.card h2 a:hover,.card h3 a:hover{color:var(--cyan)}
.formula-box{background:#091523;border:1px solid var(--line);border-radius:12px;padding:18px 22px;margin:0 0 20px}.formula-box p{margin:0;color:var(--text);font-weight:600}
.legal ol{padding-left:23px;color:var(--muted)}.legal li{margin-bottom:8px}.legal section>p:last-child{margin-bottom:0}
.legal{min-width:0}.table-wrap{overflow-x:auto;max-width:100%;margin-bottom:16px}.table-wrap:focus-visible{outline:3px solid var(--cyan);outline-offset:4px}table{border-collapse:collapse;width:100%;font-size:15px}caption{text-align:left;color:var(--muted);font-size:13px;padding-bottom:10px}th,td{border-bottom:1px solid var(--line);padding:10px 12px;text-align:right;color:var(--muted)}th:first-child{text-align:left}thead th{color:var(--text);font-size:13px}tbody th{color:var(--text);font-weight:600}
.guide-cta{margin-top:40px;padding:24px 28px;background:var(--surface);border-radius:12px}.guide-cta .release{margin-bottom:6px}
.steps{padding-left:22px;color:var(--muted);max-width:760px}.steps li{margin-bottom:12px}.steps strong{color:var(--text)}
.page-intro .eyebrow a{color:var(--cyan);text-decoration:none}
@media(max-width:900px){.compare,.guide-grid{grid-template-columns:1fr}}

/* ====================================================================
   v2 premium landing-page layer (2026-10-17). Appended after the v1 rules;
   v1 selectors for guides and legal pages are kept intact.
   ==================================================================== */
:root{--surface-2:#10243b;--line-2:#34506d;--glow:#1e6fd0;--radius:16px;--header-h:72px}
html{scroll-padding-top:calc(var(--header-h) + 16px)}
body{font-size:17px;text-rendering:optimizeLegibility;overflow-x:clip}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- header ---------- */
.header{position:sticky;top:0;z-index:40;background:rgba(7,17,31,.9);-webkit-backdrop-filter:saturate(1.4) blur(14px);backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid var(--line)}
.header .nav{min-height:var(--header-h);display:flex;flex-direction:row;align-items:center;justify-content:space-between;gap:20px;padding-block:0}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);text-decoration:none;font-size:17px;font-weight:700;letter-spacing:-.02em;white-space:nowrap}
.app-icon{display:block;width:40px;height:40px;border-radius:22.37%;box-shadow:0 0 0 1px rgba(255,255,255,.1),0 6px 18px rgba(0,0,0,.45);flex:none}
.navlinks{display:flex;align-items:center;gap:6px;margin-left:auto}
.navlinks a{font-size:14px;font-weight:500;text-decoration:none;color:var(--muted);padding:10px 12px;border-radius:8px;min-height:44px;display:inline-flex;align-items:center}
.navlinks a:hover,.navlinks a[aria-current]{color:#fff;background:rgba(101,186,255,.1)}
.nav-status{font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--cyan);border:1px solid #2f6a82;border-radius:999px;padding:7px 13px;white-space:nowrap}
.menu{display:none;position:relative}
.menu summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:0 14px;border:1px solid var(--line-2);border-radius:10px;color:var(--text);font-size:14px;font-weight:600;background:var(--surface)}
.menu summary::-webkit-details-marker{display:none}
.menu-bars,.menu-bars::before,.menu-bars::after{display:block;width:16px;height:2px;background:currentColor;border-radius:2px;content:"";position:relative}
.menu-bars::before{position:absolute;top:-5px}.menu-bars::after{position:absolute;top:5px}
.menu[open] .menu-bars{background:transparent}.menu[open] .menu-bars::before{top:0;transform:rotate(45deg)}.menu[open] .menu-bars::after{top:0;transform:rotate(-45deg)}
.menu-panel{position:absolute;right:0;top:calc(100% + 10px);width:min(280px,calc(100vw - 36px));background:#0b1a2c;border:1px solid var(--line-2);border-radius:14px;padding:8px;box-shadow:0 24px 60px rgba(0,0,0,.55);display:grid}
.menu-panel a{padding:14px 16px;border-radius:10px;color:var(--text);text-decoration:none;font-size:16px;min-height:48px;display:flex;align-items:center}
.menu-panel a:hover,.menu-panel a[aria-current]{background:rgba(101,186,255,.12)}
.menu-panel .nav-status{margin:8px 8px 6px;text-align:center}

/* ---------- buttons and store state ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:14px 26px;border-radius:12px;font-size:16px;font-weight:700;text-decoration:none;letter-spacing:-.01em;border:1px solid transparent;background:linear-gradient(180deg,#78c3ff,#4aa6f5);color:#06121f;box-shadow:0 10px 28px rgba(60,150,240,.28)}
.btn:hover{background:linear-gradient(180deg,#9dd5ff,#65baff);color:#06121f}
.btn svg{width:18px;height:18px;flex:none}
.btn.ghost{background:transparent;color:var(--text);border-color:var(--line-2);box-shadow:none}
.btn.ghost:hover{background:rgba(101,186,255,.1);color:#fff}
.release{display:inline-flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:1px;min-height:52px;padding:8px 22px 8px 18px;background:linear-gradient(180deg,#14283f,#0d1d30);color:var(--text);border:1px solid var(--line-2);border-radius:12px;text-align:left;position:relative;cursor:default;user-select:none;-webkit-user-select:none}
.release::before{content:"";position:absolute;left:18px;top:50%;width:8px;height:8px;margin-top:-4px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(137,228,239,.16)}
.release-kicker{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);padding-left:22px}
.release-label{font-size:17px;font-weight:650;letter-spacing:-.02em;padding-left:22px;color:#fff}
.release-live{text-decoration:none;cursor:pointer;border-color:#4a7096}.release-live:hover{background:linear-gradient(180deg,#1a3552,#112844);color:#fff}
.store-note{font-size:13px;color:var(--muted);margin:0}

/* ---------- hero ---------- */
.hero{padding:72px 0 76px;display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);gap:56px;align-items:center;position:relative}
.hero-copy{position:relative;z-index:2}
.lockup{display:flex;align-items:center;gap:14px;margin-bottom:30px}
.lockup .app-icon{width:56px;height:56px;box-shadow:0 0 0 1px rgba(255,255,255,.12),0 14px 34px rgba(0,0,0,.55),0 0 46px rgba(40,120,230,.35)}
.lockup strong{display:block;font-size:19px;letter-spacing:-.025em;line-height:1.2}
.lockup span{display:block;font-size:15px;letter-spacing:-.005em;color:var(--cyan);font-weight:500;margin-top:2px}
.hero h1{font-size:clamp(42px,4.9vw,68px);line-height:1.06;margin-bottom:24px}
.hero .lead{max-width:560px;font-size:19px;color:#c4d1e1;margin-bottom:26px}
.points{list-style:none;margin:0 0 34px;padding:0;display:flex;flex-wrap:wrap;gap:10px 22px;color:var(--muted);font-size:14px;font-weight:500}
.points li{display:inline-flex;align-items:center;gap:8px}
.points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--blue)}
.hero .actions{margin:0 0 14px;gap:14px}
.hero-visual{margin:0;position:relative;z-index:1}
.phones{position:relative;width:100%;max-width:560px;margin-inline:auto;aspect-ratio:1/1.28}
.phones::before{content:"";position:absolute;inset:-6% -2% -4%;background:radial-gradient(closest-side,rgba(38,118,220,.42),rgba(38,118,220,0) 72%);z-index:0;pointer-events:none}
.phone{position:absolute;width:51%;padding:2.2%;border-radius:12% / 5.6%;background:linear-gradient(155deg,#2c3c52,#0b121c 42%,#1c2a3d);box-shadow:0 0 0 1px #3f5875,0 40px 80px rgba(0,0,0,.6),0 8px 24px rgba(0,0,0,.4);z-index:1}
.phone-screen{position:relative;overflow:hidden;border-radius:10% / 4.6%;background:#000;aspect-ratio:1206/2622}
.phone-screen img{display:block;width:100%;height:100%;object-fit:cover}
.phone-screen::after{content:"";position:absolute;top:1.7%;left:50%;width:29%;aspect-ratio:3.2;transform:translateX(-50%);background:#000;border-radius:999px}
.phone-back{left:0;top:12%;transform:rotate(-3deg);z-index:1}
.phone-front{right:0;top:0;transform:rotate(2.5deg);z-index:2}
.hero-visual figcaption{margin:18px auto 0;max-width:520px;font-size:12px;color:var(--muted);text-align:center}

/* ---------- trust strip ---------- */
.strip{gap:0;padding:0;border:0;background:linear-gradient(180deg,#0d1d30,#0a1828);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.strip>div{padding:24px 28px;border-right:1px solid var(--line)}
.strip>div:last-child{border-right:0}

/* ---------- section rhythm ---------- */
.section{padding:104px 0}
.section-head{max-width:700px;margin-bottom:48px}
.section-head .lead{margin-bottom:0}
.card{background:linear-gradient(180deg,#0f2237,#0c1c2f);transition:border-color .2s ease,transform .2s ease}
.card:hover{border-color:var(--line-2)}
.gallery-section{border-bottom:1px solid var(--line);scroll-margin-top:-88px}

/* ---------- screenshot gallery ---------- */
.carousel{position:relative}
.carousel-bar{display:flex;align-items:center;gap:22px;margin-bottom:24px;max-width:1090px;margin-inline:auto;padding-left:68px}
.carousel-count{margin:0;font-variant-numeric:tabular-nums;font-size:14px;color:var(--muted);letter-spacing:.06em;min-width:92px}
.carousel-count b{color:#fff;font-weight:700}
.legend{display:flex;gap:14px;flex-wrap:wrap;margin:0;font-size:13px;color:var(--muted)}
.legend span{display:inline-flex;align-items:center;gap:8px}
.carousel-stage{display:grid;grid-template-columns:48px minmax(0,1fr) 48px;grid-template-areas:"prev track next";column-gap:20px;align-items:start;max-width:1090px;margin-inline:auto}
.ctl-prev{grid-area:prev}.ctl-next{grid-area:next}.ctl-prev,.ctl-next{margin-top:236px}
.ctl{width:48px;height:48px;border-radius:50%;border:1px solid #6482a1;background:var(--surface);color:var(--text);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;padding:0}
.ctl:hover{background:#17314d;border-color:#8fb0d0}
.ctl svg{width:20px;height:20px}
.ctl[aria-disabled="true"]{opacity:.35;cursor:default}
.ctl[aria-disabled="true"]:hover{background:var(--surface);border-color:#6482a1}
.ctl[hidden],.dots[hidden]{display:none}
.track{grid-area:track;position:relative;display:flex;gap:24px;list-style:none;margin:0;padding:6px 0 22px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-padding-left:0;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.track::-webkit-scrollbar{display:none}
.track:focus-visible{outline:3px solid var(--cyan);outline-offset:4px;border-radius:12px}
.slide{flex:0 0 calc((100% - 48px) / 3);min-width:0;scroll-snap-align:start;display:flex;flex-direction:column;gap:18px;margin:0;padding:0}
.shot{margin:0;border-radius:22px;overflow:hidden;border:1px solid #2a4561;background:#0a1626;box-shadow:0 18px 44px rgba(0,0,0,.4);aspect-ratio:1206/2622}
.shot img{display:block;width:100%;height:auto}
.slide-meta{display:flex;align-items:center;gap:12px;margin:0 0 8px}
.slide-num{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;color:var(--blue);letter-spacing:.08em}
.slide h3{font-size:21px;margin-bottom:8px}
.slide p{color:var(--muted);font-size:15px;margin:0}
.badge{display:inline-flex;align-items:center;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;padding:4px 10px;border-radius:999px;border:1px solid}
.badge-free{color:#9fe9bd;border-color:#2f7a55;background:rgba(47,122,85,.14)}
.badge-pro{color:#ffd58a;border-color:#8a6a2c;background:rgba(138,106,44,.16)}
.badge-split{gap:7px;border-color:#566f89;background:rgba(86,111,137,.14);white-space:nowrap}.bs-free{color:#9fe9bd}.bs-pro{color:#ffd58a}.bs-dot{color:#8aa0b8}
.slide-meta{flex-wrap:wrap}
.prices{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0 20px}
.price{border:1px solid #3c6288;background:rgba(7,17,31,.55);border-radius:14px;padding:16px 18px;display:flex;flex-direction:column}
.price-label{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan);font-weight:700}
.price-amount{font-size:36px;font-weight:700;letter-spacing:-.03em;line-height:1.1;margin:6px 0 2px;color:#fff}
.price-per{font-size:14px;color:var(--muted)}
.card-price{margin:20px 0 0!important;padding-top:16px;border-top:1px solid var(--line);color:var(--text)!important;font-size:15px}.card-price strong{color:#fff}
.dots{display:flex;justify-content:center;gap:4px;margin-top:6px}
.dot.in-view::before{background:#9db7d2}
.dot{width:32px;height:32px;border:0;background:transparent;cursor:pointer;padding:0;display:inline-flex;align-items:center;justify-content:center;border-radius:50%}
.dot::before{content:"";width:9px;height:9px;border-radius:50%;background:#6482a1;transition:background .2s ease,width .2s ease}
.dot[aria-current="true"]::before{background:var(--blue);width:22px;border-radius:6px}
.gallery-note{margin:26px 0 0;font-size:13px;color:var(--muted);max-width:820px}

/* ---------- call to action ---------- */
.cta{padding:88px 0;text-align:center;position:relative}
.cta-card{background:linear-gradient(135deg,#123152,#0b1b2e 60%);border:1px solid #36597b;border-radius:24px;padding:64px 32px;position:relative;overflow:hidden}
.cta-card::before{content:"";position:absolute;inset:-40% -10% auto auto;width:60%;aspect-ratio:1;background:radial-gradient(closest-side,rgba(60,150,240,.28),transparent 70%);pointer-events:none}
.cta-card .app-icon{width:84px;height:84px;margin:0 auto 26px;position:relative}
.cta-card>*{position:relative}
.cta .actions{justify-content:center;margin:30px 0 14px;gap:14px}
.cta .lead{margin-inline:auto}

/* ---------- footer ---------- */
.footer{padding:56px 0 36px;border-top:1px solid var(--line);background:#060e1a;font-size:14px;color:var(--muted)}
.footer-top{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,2fr);gap:48px;padding-bottom:36px;border-bottom:1px solid var(--line)}
.footer-brand p{margin:16px 0 0;max-width:360px}
.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.footer-h{margin:0 0 14px;color:var(--text);font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.footer ul{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.footer a{color:var(--muted);text-decoration:none;display:inline-flex;min-height:32px;align-items:center}
.footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{padding-top:26px;display:grid;gap:8px}
.footer-bottom p{margin:0}.footer-bottom .fine{max-width:760px}

/* ---------- guides: comfortable reading column ---------- */
.page-intro .lead{max-width:640px;line-height:1.7}
.guide{max-width:700px}
.guide section{margin-bottom:60px}
.guide h2{font-size:clamp(24px,2.6vw,30px);line-height:1.2;letter-spacing:-.03em;color:#fff;margin:0 0 .75em}
.guide p,.guide li{font-size:18px;line-height:1.8;color:#c3d0df;text-wrap:pretty}
.guide p{margin:0 0 1.2em}
.guide section>p:last-child,.guide section>ul:last-child,.guide section>ol:last-child{margin-bottom:0}
.guide ul,.guide ol{margin:0 0 1.3em;padding-left:1.35em}
.guide li{margin-bottom:.75em;padding-left:.2em}.guide li:last-child{margin-bottom:0}
.guide li::marker{color:var(--blue);font-weight:600}
.guide strong{color:#fff;font-weight:650}
.guide em{color:#e4ecf6}
.guide a{text-decoration-thickness:1px;text-underline-offset:4px}
.guide .formula-box{margin:1.3em 0 1.5em;padding:20px 24px;background:#0b1b2e;border:1px solid var(--line);border-left:3px solid var(--blue);border-radius:12px}
.guide .formula-box p{font-size:18px;line-height:1.5;margin:0;color:#fff}
.guide .table-wrap{margin:1.5em 0 1em}
.guide table{font-size:16px}.guide th,.guide td{padding:12px 14px}
.guide .fine{font-size:14px;line-height:1.6;color:var(--muted)}
.guide .callout,.guide-cta{margin-top:44px}
.guide .guide-cta p{font-size:17px;line-height:1.65}
.guide-cta .store-note{font-size:14px}
@media(max-width:640px){.guide p,.guide li{font-size:17px;line-height:1.75}.guide section{margin-bottom:46px}.guide .formula-box{padding:16px 18px}.guide .formula-box p{font-size:17px}}

/* ---------- legal and guide pages share the new chrome ---------- */
.legal-layout .toc{position:sticky;top:calc(var(--header-h) + 24px)}


/* stand-alone text links get a comfortable tap height (WCAG 2.5.8) */
.callout>a,.card>a,.pro a:not(.btn),#refrigerants a:last-child,.more a{display:inline-flex;align-items:center;min-height:44px}

/* ---------- responsive ---------- */
@media(min-width:861px) and (max-width:1000px){.slide{flex-basis:calc((100% - 24px) / 2)}.ctl-prev,.ctl-next{margin-top:200px}}
@media(max-width:1000px){
  .hero{grid-template-columns:1fr;gap:44px;padding:48px 0 56px}
  .hero-copy{max-width:640px}
  .phones{max-width:440px}
  .section{padding:80px 0}.gallery-section{scroll-margin-top:-64px}
  .footer-top{grid-template-columns:1fr;gap:36px}
}
@media(max-width:860px){
  .navlinks,.header .nav>.nav-status{display:none}
  .menu{display:block}
  :root{--header-h:64px}
  .strip{grid-template-columns:1fr}.strip>div{border-right:0;border-bottom:1px solid var(--line);padding:20px 22px}.strip>div:last-child{border-bottom:0}
  .carousel-bar{padding-left:0}
  .carousel-stage{grid-template-columns:1fr auto auto;grid-template-areas:". prev next" "track track track";column-gap:10px;row-gap:14px}
  .ctl-prev,.ctl-next{margin-top:0}
  .slide{flex-basis:min(72vw,300px)}
  .track{gap:16px;margin-inline:-18px;padding-inline:18px;scroll-padding-left:18px}
  .compare{grid-template-columns:1fr}
}
@media(max-width:640px){
  .legal-layout .toc{position:static}
  .faq summary{list-style-position:inside}
  .brand{font-size:16px}.app-icon{width:36px;height:36px}
  .lockup{margin-bottom:24px}.lockup .app-icon{width:52px;height:52px}.lockup span{font-size:14px}
  .hero h1{font-size:42px}
  .hero .actions{flex-direction:column;align-items:stretch}
  .hero .actions .btn,.hero .actions .release,.cta .actions .btn,.cta .actions .release{width:100%}
  .release{align-items:flex-start}
  .phones{max-width:360px}
  .section{padding:60px 0}.gallery-section{scroll-margin-top:-44px}.section-head{margin-bottom:34px}
  .carousel-bar{padding-left:0;display:grid;grid-template-columns:auto 1fr;row-gap:10px;column-gap:16px;align-items:center}.legend{grid-column:1/-1;gap:6px 14px}
  .prices{grid-template-columns:1fr 1fr}.price-amount{font-size:30px}
  .cta{padding:56px 0}.cta-card{padding:44px 20px;border-radius:20px}.cta .actions{flex-direction:column;align-items:stretch}
  .footer-cols{grid-template-columns:1fr 1fr}.footer-cols>div:last-child{grid-column:1/-1}
}
@media(max-width:360px){.hero h1{font-size:36px}.footer-cols{grid-template-columns:1fr}.nav{gap:10px}.brand{gap:9px;font-size:15px}.menu summary{padding:0 11px}}
@media(hover:none){.card:hover{border-color:var(--line)}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}}

/* App Store badge (2026-11-08). Official Apple artwork only: never recolor, crop, animate or restyle the image.
   Height 48px (>= 40px minimum); padding gives >= 1/4 badge height (12px) of clear space on every side. */
.store-badge{display:inline-flex;align-items:center;justify-content:center;padding:12px;border-radius:14px;line-height:0;text-decoration:none;max-width:100%}
.store-badge img{display:block;height:48px;width:auto;max-width:100%}
.store-badge:focus-visible{outline:3px solid var(--cyan);outline-offset:-4px}
.hero .actions .store-badge{margin-left:-12px}
.guide-cta .store-badge{margin-left:-12px}
a.nav-status{text-decoration:none;display:inline-flex;align-items:center;min-height:40px}
a.nav-status:hover{background:rgba(137,228,239,.12)}
a.nav-status:focus-visible{outline:3px solid var(--cyan);outline-offset:2px}
.menu-panel a.nav-status{justify-content:center;min-height:44px}
@media(max-width:640px){.hero .actions .store-badge{margin-left:0;align-self:flex-start}}