/* Z2 Rise landing. One dark column like vo2rise.com; the HR timeline is the signature element.
   Fonts: Barlow Semi Condensed + Barlow, self-hosted (SIL OFL, web/fonts/OFL.txt), latin + latin-ext subsets. */
@font-face { font-family: 'Barlow'; src: url('/fonts/Barlow-400-latin-ext.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: 'Barlow'; src: url('/fonts/Barlow-400-latin.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Barlow'; src: url('/fonts/Barlow-500-latin-ext.woff2') format('woff2'); font-weight: 500; font-style: normal; font-display: swap; unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: 'Barlow'; src: url('/fonts/Barlow-500-latin.woff2') format('woff2'); font-weight: 500; font-style: normal; font-display: swap; unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Barlow'; src: url('/fonts/Barlow-600-latin-ext.woff2') format('woff2'); font-weight: 600; font-style: normal; font-display: swap; unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: 'Barlow'; src: url('/fonts/Barlow-600-latin.woff2') format('woff2'); font-weight: 600; font-style: normal; font-display: swap; unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Barlow Semi Condensed'; src: url('/fonts/BarlowSemiCondensed-600-latin-ext.woff2') format('woff2'); font-weight: 600; font-style: normal; font-display: swap; unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: 'Barlow Semi Condensed'; src: url('/fonts/BarlowSemiCondensed-600-latin.woff2') format('woff2'); font-weight: 600; font-style: normal; font-display: swap; unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Barlow Semi Condensed'; src: url('/fonts/BarlowSemiCondensed-700-latin-ext.woff2') format('woff2'); font-weight: 700; font-style: normal; font-display: swap; unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: 'Barlow Semi Condensed'; src: url('/fonts/BarlowSemiCondensed-700-latin.woff2') format('woff2'); font-weight: 700; font-style: normal; font-display: swap; unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Barlow Semi Condensed'; src: url('/fonts/BarlowSemiCondensed-800-latin-ext.woff2') format('woff2'); font-weight: 800; font-style: normal; font-display: swap; unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: 'Barlow Semi Condensed'; src: url('/fonts/BarlowSemiCondensed-800-latin.woff2') format('woff2'); font-weight: 800; font-style: normal; font-display: swap; unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Barlow Semi Condensed'; src: url('/fonts/BarlowSemiCondensed-900-latin-ext.woff2') format('woff2'); font-weight: 900; font-style: normal; font-display: swap; unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: 'Barlow Semi Condensed'; src: url('/fonts/BarlowSemiCondensed-900-latin.woff2') format('woff2'); font-weight: 900; font-style: normal; font-display: swap; unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
:root {
  --bg: #0b0d0e; --bg2: #121618; --line: #22292c;
  --fg: #f2f6f7; --muted: #98a7ab;
  --z2: #4db6f0; --ok: #5cd67a; --warn: #f5a623;
  --display: 'Barlow Semi Condensed', 'Arial Narrow', sans-serif;
  --body: 'Barlow', -apple-system, 'Helvetica Neue', Arial, sans-serif;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 400 17px/1.6 var(--body); -webkit-font-smoothing: antialiased; }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 10; background: var(--bg); }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
a:focus-visible { outline: 2px solid var(--z2); outline-offset: 3px; border-radius: 6px; }
p { margin: 0; }
h1, h2, h3 { margin: 0; font-family: var(--display); line-height: .95; text-wrap: balance; overflow-wrap: break-word; }
h1 { font-weight: 900; font-size: clamp(46px, 8vw, 92px); text-transform: uppercase; letter-spacing: -.005em; }
h2 { font-weight: 900; font-size: clamp(34px, 5.6vw, 62px); text-transform: uppercase; }
h3 { font-weight: 700; font-size: 22px; line-height: 1.15; }
.wrap { max-width: 1120px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.label { font: 700 13px/1 var(--display); letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.lead { color: var(--muted); font-size: clamp(17px, 1.8vw, 21px); max-width: 34em; }
.z2 { color: var(--z2); }

/* nav */
.nav { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 9; background: rgba(11,13,14,.88); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid rgba(255,255,255,.06); }
.nav .wrap { display: flex; align-items: center; gap: 16px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 900 22px/1 var(--display); white-space: nowrap; }
.brand img { width: 32px; height: 32px; }
.nav nav.sections { margin-left: auto; display: flex; gap: 20px; font: 600 15px/1 var(--display); letter-spacing: .04em; text-transform: uppercase; }
.nav nav.sections a { text-decoration: none; color: var(--muted); }
.nav nav.sections a:hover { color: var(--fg); }
@media (max-width: 640px) { .nav nav.sections { display: none; } }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 22px; border-radius: 999px; background: var(--z2); color: #06131b; font: 800 17px/1 var(--display); letter-spacing: .04em; text-transform: uppercase; text-decoration: none; }
.btn.ghost { background: transparent; color: var(--fg); border: 1px solid var(--line); }
.price { font: 700 15px/1.3 var(--display); letter-spacing: .04em; color: var(--muted); }

/* hero */
.hero { padding-block: clamp(40px, 7vw, 88px) clamp(32px, 5vw, 64px); }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: clamp(28px, 5vw, 64px); align-items: center; }
.hero-copy { display: flex; flex-direction: column; gap: 22px; min-width: 0; }
.hero .cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.watch { position: relative; width: min(100%, 420px); aspect-ratio: 1; margin-inline: auto; border-radius: 50%; padding: 18px; background: radial-gradient(circle at 30% 25%, #2a3236, #101416 70%); box-shadow: 0 30px 80px rgba(0,0,0,.6), inset 0 0 0 2px #2b3438; }
.watch img { width: 100%; border-radius: 50%; }
@media (max-width: 820px) { .hero .wrap { grid-template-columns: minmax(0, 1fr); } .watch { width: min(100%, 340px); } }

/* zone strip under hero */
.zonebar { border-block: 1px solid var(--line); background: var(--bg2); }
.zonebar .wrap { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; padding-block: 0; }
.zonebar div { padding: 22px 16px; border-right: 1px solid var(--line); display: flex; flex-direction: column; gap: 6px; }
.zonebar div:last-child { border-right: 0; }
.zonebar b { font: 900 30px/1 var(--display); font-variant-numeric: tabular-nums; }
.zonebar span { color: var(--muted); font-size: 15px; line-height: 1.35; }
@media (max-width: 700px) { .zonebar .wrap { grid-template-columns: repeat(2, minmax(0, 1fr)); } .zonebar div:nth-child(2) { border-right: 0; } .zonebar div:nth-child(-n+2) { border-bottom: 1px solid var(--line); } }

/* sections */
section.part { padding-block: clamp(56px, 8vw, 104px); border-bottom: 1px solid var(--line); }
.part-head { display: flex; flex-direction: column; gap: 14px; margin-bottom: clamp(28px, 4vw, 44px); }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(24px, 5vw, 64px); align-items: center; }
@media (max-width: 820px) { .split { grid-template-columns: minmax(0, 1fr); } }
.points { display: flex; flex-direction: column; gap: 18px; margin: 0; padding: 0; list-style: none; }
.points li { display: grid; grid-template-columns: 14px minmax(0, 1fr); gap: 14px; align-items: baseline; }
.points li::before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--z2); transform: translateY(-1px); }
.points b { font-weight: 600; }
.points p { color: var(--muted); }
.screens { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.screen { display: flex; flex-direction: column; gap: 10px; align-items: center; text-align: center; }
.screen img { width: 100%; max-width: 260px; border-radius: 50%; box-shadow: 0 0 0 8px #151a1c, 0 18px 40px rgba(0,0,0,.5); }
.screen span { font: 700 14px/1.2 var(--display); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }

/* HR timeline */
.chart { background: var(--bg2); border: 1px solid var(--line); border-radius: 18px; padding: clamp(14px, 2.5vw, 26px); }
.chart-scroll { overflow-x: auto; }
.chart svg { display: block; width: 100%; min-width: 560px; height: auto; }
.chart .legend { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 14px; color: var(--muted); font-size: 15px; }
.chart .legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 8px; vertical-align: -1px; }
.alerts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: 22px; }
.alert { border: 1px solid var(--line); border-radius: 14px; padding: 18px; display: flex; flex-direction: column; gap: 6px; }
.alert .t { font: 800 13px/1 var(--display); letter-spacing: .14em; text-transform: uppercase; }
.alert h3 { font-size: 24px; }
.alert p { color: var(--muted); font-size: 15px; line-height: 1.45; }
@media (max-width: 760px) { .alerts { grid-template-columns: minmax(0, 1fr); } }

/* zone sources table */
.tbl { overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; }
table { width: 100%; border-collapse: collapse; min-width: 520px; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--line); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
th { white-space: nowrap; font: 700 13px/1 var(--display); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); background: var(--bg2); }
td b { font-family: var(--display); font-weight: 800; font-size: 19px; white-space: nowrap; }
td.note { color: var(--muted); font-size: 15px; }

/* progress */
.prog { display: flex; flex-direction: column; gap: 10px; }
.prog-row { display: grid; grid-template-columns: 52px minmax(0, 1fr) 64px; gap: 12px; align-items: center; font-variant-numeric: tabular-nums; }
.prog-row .bar { height: 12px; border-radius: 6px; background: var(--line); overflow: hidden; }
.prog-row .bar i { display: block; height: 100%; background: var(--z2); border-radius: 6px; }
.prog-row b { font: 800 19px/1 var(--display); text-align: right; }
.prog-row span { color: var(--muted); font: 700 15px/1 var(--display); text-transform: uppercase; letter-spacing: .08em; }
.delta { font: 900 clamp(44px, 7vw, 76px)/1 var(--display); color: var(--ok); }

/* faq */
.faq { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.faq details { border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; background: var(--bg2); }
.faq summary { cursor: pointer; font: 700 19px/1.25 var(--display); list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq details p { color: var(--muted); margin-top: 10px; font-size: 16px; }
@media (max-width: 760px) { .faq { grid-template-columns: minmax(0, 1fr); } }

/* buy */
.buy { padding-block: clamp(56px, 8vw, 100px); text-align: center; }
.buy .wrap { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.buy .lead { margin-inline: auto; }
footer { border-top: 1px solid var(--line); padding-block: 28px; color: var(--muted); font-size: 15px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 10px 24px; justify-content: space-between; }
@media (prefers-reduced-motion: no-preference) { .pulse { animation: pulse 2.4s ease-in-out infinite; } @keyframes pulse { 50% { opacity: .55; } } }

/* language menu: a pill like vo2rise.com, opens the list of all languages */
.nav .lang { position: relative; flex: none; }
.nav .lang summary { list-style: none; cursor: pointer; display: flex; align-items: center; gap: 7px; font: 700 13px/1 var(--display); letter-spacing: .14em; color: var(--muted); padding: 8px 10px 8px 12px; border: 1px solid rgba(255,255,255,.16); border-radius: 999px; }
.nav .lang summary::-webkit-details-marker { display: none; }
.nav .lang summary::after { content: ""; width: 5px; height: 5px; border: solid currentColor; border-width: 0 1.5px 1.5px 0; transform: translateY(-2px) rotate(45deg); }
.nav .lang[open] summary::after { transform: translateY(1px) rotate(-135deg); }
.nav .lang summary:hover, .nav .lang[open] summary { color: var(--fg); border-color: rgba(255,255,255,.32); }
.nav .lang .menu { position: absolute; right: 0; top: calc(100% + 8px); min-width: 190px; padding: 6px; display: grid; background: var(--bg2); border: 1px solid rgba(255,255,255,.12); border-radius: 16px; box-shadow: 0 20px 50px rgba(0,0,0,.6); z-index: 20; }
.nav .lang .menu a { display: flex; justify-content: space-between; gap: 16px; padding: 10px 12px; border-radius: 10px; color: var(--muted); text-decoration: none; font: 600 15px/1 var(--body); }
.nav .lang .menu a b { font: 700 11px/1 var(--display); letter-spacing: .12em; }
.nav .lang .menu a:hover, .nav .lang .menu a[aria-current] { background: rgba(255,255,255,.07); color: var(--fg); }
@media (max-width: 640px) { .nav .lang { margin-left: auto; } }
footer a { color: var(--muted); }
footer a:hover { color: var(--fg); }
footer .langs { flex-basis: 100%; display: flex; flex-wrap: wrap; gap: 6px 16px; }
footer .langs a { text-decoration: none; }
footer .langs a[aria-current] { color: var(--fg); }