/* ============================================================
   COMPOUND X — Concept 3: "Wealth Journey OS"
   SaaS-style financial operating system for personal goals.
   Type: Plus Jakarta Sans · Data: IBM Plex Mono · Mark: Cinzel
   ============================================================ */

:root {
  --font-ui: "Plus Jakarta Sans", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
  --font-mark: "Cinzel", serif;
  --max: 1180px;
  --r-lg: 22px;
  --r-md: 14px;
  --ease: cubic-bezier(.22, 1, .36, 1);
}

[data-theme="dark"] {
  --bg: #080b18;
  --bg-2: #0c1022;
  --card: #10152c;
  --card-2: #161c38;
  --line: rgba(186, 196, 255, .13);
  --line-soft: rgba(186, 196, 255, .07);
  --text: #eceffc;
  --text-2: #b6bdd9;
  --muted: #7c84a8;
  --violet: #8b7cf6;
  --violet-deep: #6a5ae0;
  --teal: #2dd4bf;
  --silver: #c7cde6;
  --glow-v: rgba(139, 124, 246, .35);
  --glow-t: rgba(45, 212, 191, .28);
  --nav-bg: rgba(8, 11, 24, .75);
  --shadow: 0 26px 60px -24px rgba(0, 0, 0, .7);
  --btn-text: #080b18;
  --grad: linear-gradient(115deg, #8b7cf6, #2dd4bf);
  color-scheme: dark;
}

[data-theme="light"] {
  --bg: #f6f6fb;
  --bg-2: #ffffff;
  --card: #ffffff;
  --card-2: #f1f1f9;
  --line: rgba(38, 44, 84, .14);
  --line-soft: rgba(38, 44, 84, .07);
  --text: #181d36;
  --text-2: #424a6e;
  --muted: #707795;
  --violet: #5b48d6;
  --violet-deep: #4636b8;
  --teal: #0d9488;
  --silver: #6a7194;
  --glow-v: rgba(91, 72, 214, .22);
  --glow-t: rgba(13, 148, 136, .18);
  --nav-bg: rgba(246, 246, 251, .8);
  --shadow: 0 26px 50px -28px rgba(38, 44, 84, .25);
  --btn-text: #ffffff;
  --grad: linear-gradient(115deg, #5b48d6, #0d9488);
  color-scheme: light;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-ui);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background .45s var(--ease), color .45s var(--ease);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--violet); color: #fff; }

h1, h2, h3, h4 { font-weight: 700; line-height: 1.15; letter-spacing: -.02em; text-wrap: balance; }
p { text-wrap: pretty; }
.mono { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 30px; }

/* ---------- Brand ---------- */
.brand { display: flex; align-items: center; gap: 11px; }
.brand .cx { font-family: var(--font-mark); font-weight: 700; font-size: 19px; color: #fff; background: var(--grad); border-radius: 12px; width: 38px; height: 38px; display: grid; place-items: center; flex: none; }
.brand .name { font-weight: 800; font-size: 17px; letter-spacing: -.01em; white-space: nowrap; }
.brand .name small { display: block; font-family: var(--font-mono); font-weight: 500; font-size: 8.5px; letter-spacing: .26em; text-transform: uppercase; color: var(--muted); line-height: 1.5; }

/* ---------- Nav ---------- */
.nav { position: fixed; inset: 0 0 auto 0; z-index: 100; background: var(--nav-bg); -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px); border-bottom: 1px solid var(--line-soft); }
.nav-inner { max-width: var(--max); margin: 0 auto; padding: 0 30px; height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a { font-size: 13.5px; font-weight: 600; color: var(--text-2); padding: 9px 14px; border-radius: 100px; transition: all .25s; white-space: nowrap; }
.nav-links a:hover { color: var(--text); background: var(--card-2); }
.nav-links a.active { color: var(--text); background: var(--card-2); }
.nav-actions { display: flex; align-items: center; gap: 12px; }

.theme-toggle { width: 38px; height: 38px; border-radius: 12px; border: 1px solid var(--line); background: var(--card); display: grid; place-items: center; cursor: pointer; color: var(--text-2); transition: all .25s; }
.theme-toggle:hover { border-color: var(--violet); color: var(--violet); }
.theme-toggle svg { width: 16px; height: 16px; }
[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: block; }

.hamburger { display: none; width: 40px; height: 40px; border: 1px solid var(--line); border-radius: 12px; background: var(--card); cursor: pointer; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.hamburger span { width: 16px; height: 2px; border-radius: 2px; background: var(--text); transition: transform .35s var(--ease), opacity .25s; }
.menu-open .hamburger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-open .hamburger span:nth-child(2) { opacity: 0; }
.menu-open .hamburger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu { position: fixed; inset: 0; z-index: 90; background: var(--bg); display: flex; flex-direction: column; justify-content: center; padding: 96px 32px 110px; opacity: 0; pointer-events: none; transition: opacity .35s var(--ease); }
.menu-open .mobile-menu { opacity: 1; pointer-events: auto; }
.mobile-menu a { font-size: clamp(26px, 7vw, 34px); font-weight: 700; letter-spacing: -.02em; padding: 13px 0; border-bottom: 1px solid var(--line-soft); display: flex; justify-content: space-between; align-items: center; transform: translateY(14px); opacity: 0; transition: transform .5s var(--ease), opacity .5s var(--ease); }
.mobile-menu a small { font-family: var(--font-mono); font-size: 11px; color: var(--violet); }
.menu-open .mobile-menu a { transform: none; opacity: 1; }
.menu-open .mobile-menu a:nth-child(2) { transition-delay: .05s; }
.menu-open .mobile-menu a:nth-child(3) { transition-delay: .1s; }
.menu-open .mobile-menu a:nth-child(4) { transition-delay: .15s; }
.menu-open .mobile-menu a:nth-child(5) { transition-delay: .2s; }
.menu-open .mobile-menu a:nth-child(6) { transition-delay: .25s; }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 9px; font-family: var(--font-ui); font-weight: 700; font-size: 14.5px; padding: 15px 28px; border-radius: 14px; border: 1px solid transparent; cursor: pointer; white-space: nowrap; transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .25s, border-color .25s; will-change: transform; }
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 12px 30px -12px var(--glow-v); }
.btn-primary:hover { box-shadow: 0 18px 42px -14px var(--glow-v); }
.btn-ghost { border-color: var(--line); color: var(--text); background: var(--card); }
.btn-ghost:hover { border-color: var(--violet); }
.btn svg { width: 16px; height: 16px; flex: none; }
.btn-sm { padding: 11px 20px; font-size: 13px; border-radius: 12px; }

/* ---------- Badge ---------- */
.badge { display: inline-flex; align-items: center; gap: 9px; font-family: var(--font-mono); font-size: 11px; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; color: var(--teal); border: 1px solid var(--line); background: var(--card); padding: 9px 16px; border-radius: 100px; margin-bottom: 26px; }
.badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 10px var(--glow-t); animation: pulse 2.4s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }

/* ---------- Hero ---------- */
.hero { padding: 150px 0 70px; text-align: center; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; top: -300px; left: 50%; transform: translateX(-50%); width: 900px; height: 600px; background: radial-gradient(ellipse, var(--glow-v) 0%, transparent 65%); pointer-events: none; }
.hero-content { position: relative; max-width: 800px; margin: 0 auto; }
.hero h1 { font-size: clamp(40px, 5.4vw, 66px); font-weight: 800; margin-bottom: 22px; }
.hero-sub { font-size: clamp(16px, 1.6vw, 19px); color: var(--text-2); max-width: 600px; margin: 0 auto 36px; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; }
.hero-note { margin-top: 24px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }

/* ---------- Journey path ---------- */
.journey { position: relative; padding: 50px 0 90px; }
.journey-canvas-wrap { position: relative; }
#journeyCanvas { width: 100%; height: 300px; display: block; }
.journey-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-top: -8px; }
.j-step { text-align: center; padding: 0 6px; }
.j-step .mono { color: var(--violet); display: block; margin-bottom: 7px; }
.j-step b { font-size: 15px; display: block; margin-bottom: 4px; }
.j-step span { font-size: 12.5px; color: var(--muted); line-height: 1.5; display: block; }

/* ---------- Sections ---------- */
.section { padding: 100px 0; position: relative; }
.section-tint { background: var(--bg-2); border-block: 1px solid var(--line-soft); }
.sec-head { text-align: center; max-width: 640px; margin: 0 auto 60px; }
.sec-head h2 { font-size: clamp(30px, 3.6vw, 44px); margin: 16px 0 14px; }
.sec-head p { color: var(--text-2); font-size: 16.5px; }
.sec-head .mono { color: var(--violet); }
.sec-head-left { text-align: left; margin: 0 0 48px; }

/* ---------- Life-stage selector ---------- */
.stage-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 28px; }
.stage-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 26px 24px; cursor: pointer; text-align: left; font-family: var(--font-ui); color: var(--text); transition: all .35s var(--ease); position: relative; }
.stage-card:hover { transform: translateY(-4px); border-color: var(--violet); }
.stage-card.on { border-color: var(--violet); background: linear-gradient(160deg, var(--card-2), var(--card)); box-shadow: 0 16px 40px -18px var(--glow-v); }
.stage-card.on::after { content: "✓"; position: absolute; top: 16px; right: 18px; width: 24px; height: 24px; border-radius: 50%; background: var(--grad); color: #fff; font-size: 12px; font-weight: 800; display: grid; place-items: center; }
.stage-card .s-icon { width: 44px; height: 44px; border-radius: 13px; background: var(--card-2); border: 1px solid var(--line); display: grid; place-items: center; color: var(--teal); margin-bottom: 16px; }
.stage-card .s-icon svg { width: 20px; height: 20px; }
.stage-card b { font-size: 16.5px; display: block; margin-bottom: 5px; font-weight: 700; }
.stage-card span { font-size: 13.5px; color: var(--muted); }

.stage-result { background: var(--card); border: 1px solid var(--violet); border-radius: var(--r-lg); padding: 30px 32px; box-shadow: 0 20px 50px -22px var(--glow-v); display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; }
.stage-result .mono { color: var(--teal); display: block; margin-bottom: 8px; }
.stage-result h3 { font-size: 21px; margin-bottom: 8px; }
.stage-result p { font-size: 14.5px; color: var(--text-2); max-width: 560px; }

/* ---------- Product dashboard mock ---------- */
.os-window { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); box-shadow: var(--shadow); overflow: hidden; max-width: 960px; margin: 64px auto 0; text-align: left; position: relative; }
.os-bar { display: flex; align-items: center; gap: 8px; padding: 14px 20px; border-bottom: 1px solid var(--line-soft); }
.os-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.os-bar .mono { margin-left: 12px; color: var(--muted); }
.os-body { display: grid; grid-template-columns: 200px 1fr; }
.os-side { border-right: 1px solid var(--line-soft); padding: 18px 14px; display: grid; gap: 4px; align-content: start; }
.os-side a { font-size: 13px; font-weight: 600; color: var(--muted); padding: 9px 12px; border-radius: 10px; }
.os-side a.on { color: var(--text); background: var(--card-2); }
.os-main { padding: 24px; display: grid; gap: 16px; }
.os-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.os-stat { background: var(--card-2); border: 1px solid var(--line-soft); border-radius: var(--r-md); padding: 16px 18px; }
.os-stat .mono { color: var(--muted); display: block; margin-bottom: 6px; font-size: 10px; }
.os-stat b { font-size: 21px; font-weight: 800; }
.os-stat b.up { color: var(--teal); }
.os-goal { display: flex; align-items: center; gap: 14px; background: var(--card-2); border: 1px solid var(--line-soft); border-radius: var(--r-md); padding: 14px 18px; }
.os-goal .g-ic { width: 36px; height: 36px; border-radius: 10px; background: var(--card); border: 1px solid var(--line-soft); display: grid; place-items: center; color: var(--violet); flex: none; }
.os-goal .g-ic svg { width: 17px; height: 17px; }
.os-goal .g-txt { flex: 1; }
.os-goal .g-txt b { font-size: 13.5px; display: block; }
.os-goal .g-txt span { font-size: 11.5px; color: var(--muted); }
.os-track { height: 5px; border-radius: 4px; background: var(--line-soft); flex: 1.2; overflow: hidden; }
.os-track i { display: block; height: 100%; border-radius: 4px; background: var(--grad); width: 0; transition: width 1.6s var(--ease) .4s; }
.in-view .os-track i { width: var(--w, 50%); }
.os-goal .mono { color: var(--teal); font-size: 10.5px; }

/* ---------- Feature cards ---------- */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feat-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 30px 28px; transition: transform .35s var(--ease), border-color .3s, box-shadow .35s; }
.feat-card:hover { transform: translateY(-5px); border-color: var(--teal); box-shadow: 0 18px 44px -20px var(--glow-t); }
.feat-card .s-icon { width: 46px; height: 46px; border-radius: 14px; background: var(--card-2); border: 1px solid var(--line); display: grid; place-items: center; color: var(--violet); margin-bottom: 18px; }
.feat-card .s-icon svg { width: 21px; height: 21px; }
.feat-card h3 { font-size: 18px; margin-bottom: 8px; }
.feat-card p { font-size: 14px; color: var(--muted); margin-bottom: 14px; }
.feat-link { font-size: 13px; font-weight: 700; color: var(--teal); display: inline-flex; align-items: center; gap: 6px; }
.feat-link svg { width: 14px; height: 14px; transition: transform .3s var(--ease); }
.feat-card:hover .feat-link svg { transform: translateX(4px); }

/* ---------- Calculator ---------- */
.calc-layout { display: grid; grid-template-columns: 410px 1fr; gap: 24px; align-items: start; }
.calc-panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 30px; position: sticky; top: 94px; }
.calc-panel h3 { font-size: 17px; margin-bottom: 24px; }
.ctl { margin-bottom: 24px; }
.ctl-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 11px; }
.ctl-head label { font-size: 13px; font-weight: 700; color: var(--text-2); }
.ctl-head output { font-family: var(--font-mono); font-size: 14px; font-weight: 600; color: var(--teal); }
input[type="range"] { width: 100%; height: 5px; appearance: none; -webkit-appearance: none; background: linear-gradient(90deg, var(--violet) var(--fill, 50%), var(--line) var(--fill, 50%)); border-radius: 5px; outline: none; cursor: pointer; }
input[type="range"]::-webkit-slider-thumb { appearance: none; -webkit-appearance: none; width: 21px; height: 21px; border-radius: 50%; background: #fff; border: 2.5px solid var(--violet); box-shadow: 0 2px 10px var(--glow-v); transition: transform .2s; }
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.15); }
input[type="range"]::-moz-range-thumb { width: 21px; height: 21px; border-radius: 50%; background: #fff; border: 2.5px solid var(--violet); }
.switch-row { display: flex; justify-content: space-between; align-items: center; padding: 15px 0; border-top: 1px solid var(--line-soft); }
.switch-row label { font-size: 13px; font-weight: 700; color: var(--text-2); }
.switch { position: relative; width: 46px; height: 26px; flex: none; }
.switch input { opacity: 0; width: 100%; height: 100%; position: absolute; cursor: pointer; z-index: 2; margin: 0; }
.switch i { position: absolute; inset: 0; background: var(--line); border-radius: 100px; transition: background .3s; }
.switch i::after { content: ""; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: var(--bg-2); transition: transform .3s var(--ease); }
.switch input:checked + i { background: var(--teal); }
.switch input:checked + i::after { transform: translateX(20px); }
.result-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 22px; }
.result-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-md); padding: 20px; }
.result-card span { font-family: var(--font-mono); font-size: 10px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); display: block; margin-bottom: 8px; }
.result-card b { font-size: clamp(18px, 1.8vw, 24px); font-weight: 800; }
.result-card.highlight { border-color: var(--teal); }
.result-card.highlight b { color: var(--teal); }
.chart-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 26px; }
.chart-card canvas { width: 100%; height: 320px; display: block; }
.chart-legend { display: flex; gap: 22px; margin-top: 16px; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); flex-wrap: wrap; }
.chart-legend i { display: inline-block; width: 18px; height: 3px; border-radius: 2px; margin-right: 8px; vertical-align: middle; }

/* ---------- Founder ---------- */
.founder-grid { display: grid; grid-template-columns: 340px 1fr; gap: 56px; align-items: center; }
.founder-photo { aspect-ratio: 4/5; border-radius: var(--r-lg); border: 1px solid var(--line); background: linear-gradient(160deg, var(--card-2), var(--card)); display: grid; place-items: center; }
.founder-photo .ph { text-align: center; color: var(--muted); font-size: 12.5px; }
.founder-photo .ph .cx-big { font-family: var(--font-mark); font-size: 56px; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; display: block; margin-bottom: 10px; }
.founder-quote { font-size: clamp(20px, 2.2vw, 27px); font-weight: 600; line-height: 1.45; letter-spacing: -.01em; margin-bottom: 24px; }
.founder-quote .grad-text { font-weight: 700; }
.founder-byline b { display: block; font-size: 15.5px; font-weight: 800; }
.founder-byline span { font-size: 13.5px; color: var(--muted); }
.cred-pills { display: flex; gap: 9px; flex-wrap: wrap; margin-top: 20px; }
.cred-pills span { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; padding: 8px 14px; border-radius: 100px; border: 1px solid var(--line); background: var(--card); color: var(--text-2); }

/* ---------- FAQ ---------- */
.faq { max-width: 740px; margin: 0 auto; display: grid; gap: 12px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-md); padding: 0 24px; transition: border-color .3s; }
.faq details[open] { border-color: var(--violet); }
.faq summary { font-size: 15.5px; font-weight: 700; padding: 20px 36px 20px 0; cursor: pointer; list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 400; color: var(--teal); transition: transform .3s var(--ease); }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq .faq-body { padding: 0 0 22px; font-size: 14.5px; color: var(--text-2); }

/* ---------- Solutions page ---------- */
.sol-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.sol-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 32px 30px; transition: transform .35s var(--ease), border-color .3s, box-shadow .35s; }
.sol-card:hover { transform: translateY(-4px); border-color: var(--violet); box-shadow: 0 18px 44px -20px var(--glow-v); }
.sol-card .mono { color: var(--teal); display: block; margin-bottom: 14px; }
.sol-card h3 { font-size: 21px; margin-bottom: 14px; }
.sol-card .meta { display: grid; gap: 12px; margin-bottom: 22px; }
.sol-card .meta div { font-size: 14px; color: var(--text-2); }
.sol-card .meta b { display: block; font-family: var(--font-mono); font-size: 10px; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); margin-bottom: 3px; }

/* ---------- Learn page ---------- */
.cat-tabs { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 40px; justify-content: center; }
.cat-tab { font-family: var(--font-ui); font-size: 13.5px; font-weight: 700; padding: 11px 22px; border-radius: 100px; border: 1px solid var(--line); background: var(--card); color: var(--text-2); cursor: pointer; transition: all .25s; }
.cat-tab:hover { border-color: var(--violet); color: var(--text); }
.cat-tab.active { background: var(--grad); color: #fff; border-color: transparent; }
.topic-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.topic-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 26px; transition: transform .35s var(--ease), border-color .3s; }
.topic-card.hide { display: none; }
.topic-card:hover { transform: translateY(-4px); border-color: var(--teal); }
.topic-card .mono { color: var(--teal); display: block; margin-bottom: 13px; font-size: 10px; }
.topic-card h3 { font-size: 16.5px; margin-bottom: 8px; }
.topic-card p { font-size: 13.5px; color: var(--muted); }

/* ---------- Forms ---------- */
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 13px; font-weight: 700; color: var(--text-2); margin-bottom: 9px; }
.field input, .field select, .field textarea { width: 100%; padding: 14px 17px; font-family: var(--font-ui); font-size: 15px; background: var(--card-2); border: 1px solid var(--line); border-radius: var(--r-md); color: var(--text); outline: none; transition: border-color .25s, box-shadow .25s; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--violet); box-shadow: 0 0 0 4px var(--glow-v); }
.field textarea { min-height: 110px; resize: vertical; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.radio-pills { display: flex; gap: 10px; }
.radio-pills label { flex: 1; text-align: center; padding: 13px; border: 1px solid var(--line); border-radius: var(--r-md); font-size: 14px; font-weight: 700; cursor: pointer; color: var(--text-2); transition: all .25s; margin: 0; background: var(--card-2); }
.radio-pills input { display: none; }
.radio-pills label:has(input:checked) { border-color: var(--teal); color: var(--teal); background: var(--card); }

.assure { display: grid; gap: 16px; }
.assure > div { display: flex; gap: 14px; align-items: flex-start; }
.assure svg { width: 19px; height: 19px; color: var(--teal); flex: none; margin-top: 2px; }
.assure b { display: block; font-size: 15px; font-weight: 700; }
.assure span { font-size: 13.5px; color: var(--muted); }

/* ---------- About / principles ---------- */
.principle-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.principle { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 26px 24px; }
.principle .mono { color: var(--violet); display: block; margin-bottom: 14px; font-size: 10px; }
.principle b { font-size: 17.5px; display: block; margin-bottom: 7px; }
.principle p { font-size: 13.5px; color: var(--muted); }
.big-quote { font-size: clamp(24px, 3.2vw, 38px); font-weight: 700; letter-spacing: -.02em; line-height: 1.3; text-align: center; max-width: 860px; margin: 0 auto; }

/* ---------- CTA ---------- */
.cta-final { text-align: center; }
.cta-card { background: var(--card); border: 1px solid var(--line); border-radius: 28px; padding: 80px 40px; position: relative; overflow: hidden; }
.cta-card::before { content: ""; position: absolute; top: -200px; left: 50%; transform: translateX(-50%); width: 700px; height: 420px; background: radial-gradient(ellipse, var(--glow-v) 0%, transparent 65%); pointer-events: none; }
.cta-card h2 { font-size: clamp(30px, 4vw, 48px); max-width: 660px; margin: 0 auto 16px; position: relative; }
.cta-card p { color: var(--text-2); font-size: 16.5px; max-width: 480px; margin: 0 auto 34px; position: relative; }
.cta-card .hero-ctas { position: relative; }

/* ---------- Footer ---------- */
.footer { background: var(--bg-2); border-top: 1px solid var(--line-soft); padding: 66px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 50px; }
.footer h4 { font-family: var(--font-mono); font-size: 10.5px; font-weight: 500; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); margin-bottom: 18px; }
.footer-links { display: grid; gap: 11px; }
.footer-links a { font-size: 14px; color: var(--text-2); transition: color .25s; }
.footer-links a:hover { color: var(--teal); }
.footer .brand { margin-bottom: 18px; }
.footer-desc { font-size: 13.5px; color: var(--muted); max-width: 300px; }
.footer-contact { display: grid; gap: 11px; font-size: 14px; color: var(--text-2); }
.footer-contact a:hover { color: var(--teal); }
.disclaimer { border-top: 1px solid var(--line-soft); padding: 24px 0 32px; }
.disclaimer p { font-size: 11.5px; color: var(--muted); line-height: 1.7; max-width: 980px; }
.disclaimer p + p { margin-top: 8px; }
.disclaimer b { color: var(--text-2); }

/* ---------- Page hero ---------- */
.page-hero { padding: 150px 0 60px; text-align: center; position: relative; overflow: hidden; }
.page-hero::before { content: ""; position: absolute; top: -300px; left: 50%; transform: translateX(-50%); width: 800px; height: 520px; background: radial-gradient(ellipse, var(--glow-v) 0%, transparent 65%); pointer-events: none; }
.page-hero h1 { font-size: clamp(34px, 4.6vw, 54px); font-weight: 800; margin: 16px auto; max-width: 720px; position: relative; }
.page-hero p { font-size: 17px; color: var(--text-2); max-width: 560px; margin: 0 auto; position: relative; }

/* ---------- Reveal ---------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
  .reveal.in { opacity: 1; transform: none; }
  .reveal-d1 { transition-delay: .08s; } .reveal-d2 { transition-delay: .16s; }
  .reveal-d3 { transition-delay: .24s; } .reveal-d4 { transition-delay: .32s; }
  .reveal-d5 { transition-delay: .40s; }
}

/* ---------- Sticky mobile CTA ---------- */
.sticky-cta { display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 80; padding: 12px 16px calc(12px + env(safe-area-inset-bottom)); background: var(--nav-bg); -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px); border-top: 1px solid var(--line-soft); gap: 12px; }
.sticky-cta .btn { flex: 1; padding: 14px 10px; font-size: 13.5px; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .nav-links { display: none; }
  .nav-actions .btn { display: none; }
  .hamburger { display: flex; }
  .stage-grid, .feat-grid, .topic-grid { grid-template-columns: repeat(2, 1fr); }
  .calc-layout { grid-template-columns: 1fr; }
  .calc-panel { position: static; }
  .founder-grid { grid-template-columns: 1fr; gap: 44px; }
  .principle-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .sol-grid { grid-template-columns: 1fr; }
  .journey-steps { grid-template-columns: repeat(5, 1fr); gap: 8px; }
  .os-body { grid-template-columns: 1fr; }
  .os-side { display: flex; flex-wrap: wrap; border-right: none; border-bottom: 1px solid var(--line-soft); }
}
@media (max-width: 768px) {
  .container, .nav-inner { padding-inline: 20px; }
  .nav-inner { height: 64px; }
  .section { padding: 72px 0; }
  .hero { padding: 120px 0 50px; }
  .hero-ctas .btn { width: 100%; }
  .stage-grid, .feat-grid, .topic-grid, .result-cards, .field-row, .os-row { grid-template-columns: 1fr; }
  .stage-result { grid-template-columns: 1fr; }
  .journey-steps { grid-template-columns: 1fr; gap: 20px; text-align: left; }
  .j-step { display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; text-align: left; align-items: baseline; }
  .j-step span { grid-column: 2; }
  #journeyCanvas { display: none; }
  .sticky-cta { display: flex; }
  body { padding-bottom: 76px; }
  .page-hero { padding: 120px 0 44px; }
  .brand .name small { display: none; }
  .cta-card { padding: 60px 24px; }
}
@media (max-width: 480px) {
  .principle-grid, .footer-grid { grid-template-columns: 1fr; }
}