/* =========================================================================
   JetLagCal — design system v2
   Teal #0d9488 · Navy #0f172a · Gold #f59e0b
   Premium dark UI: aurora mesh, grain, depth, motion. Zero libraries.
   ========================================================================= */

:root {
  --teal: #0d9488;
  --teal-bright: #2dd4bf;
  --teal-soft: rgba(13, 148, 136, 0.14);
  --navy: #0b1220;
  --navy-2: #111c31;
  --navy-3: #1a2740;
  --indigo: #4f46e5;
  --gold: #f59e0b;
  --gold-bright: #fbbf24;
  --gold-soft: rgba(245, 158, 11, 0.15);
  --ink: #eef3fb;
  --ink-dim: #aab7cd;
  --ink-faint: #7385a2;
  --line: rgba(148, 163, 184, 0.16);
  --line-2: rgba(148, 163, 184, 0.28);
  --radius: 20px;
  --radius-sm: 12px;
  --shadow: 0 24px 60px -18px rgba(0, 0, 0, 0.65);
  --shadow-soft: 0 12px 32px -12px rgba(0, 0, 0, 0.5);
  --glow-teal: 0 0 40px -8px rgba(45, 212, 191, 0.45);
  --maxw: 1140px;
  --font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--navy);
  color: var(--ink);
  line-height: 1.62;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* fine grain overlay for texture */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  opacity: 0.035; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
main, header, footer { position: relative; z-index: 1; }

img { max-width: 100%; height: auto; display: block; }
a { color: var(--teal-bright); text-decoration: none; transition: color .15s; }
a:hover { text-decoration: underline; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(11, 18, 32, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 13px 22px; max-width: var(--maxw); margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700;
  font-size: 1.16rem; color: var(--ink); letter-spacing: -0.01em; }
.brand:hover { text-decoration: none; }
.brand .logo {
  width: 34px; height: 34px; display: grid; place-items: center;
  transition: transform .3s var(--ease);
  filter: drop-shadow(0 2px 7px rgba(13, 148, 136, 0.4));
}
.brand:hover .logo { transform: rotate(-12deg) scale(1.08); }
.brand .logo svg { width: 34px; height: 34px; }
.brand b { color: var(--gold); font-weight: 800; }
.nav-links { display: flex; gap: 4px; flex-wrap: wrap; }
.nav-links a {
  color: var(--ink-dim); padding: 8px 13px; border-radius: 10px;
  font-size: 0.95rem; font-weight: 500; transition: color .15s, background .15s;
}
.nav-links a:hover { color: var(--ink); background: rgba(255,255,255,0.06); text-decoration: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: clamp(52px, 8vw, 96px) 0 clamp(48px, 7vw, 84px);
  border-bottom: 1px solid var(--line);
}
/* aurora mesh background */
.hero .aurora { position: absolute; inset: -20% -10% -10% -10%; z-index: 0; filter: blur(58px); pointer-events: none; }
.hero .aurora span { position: absolute; border-radius: 50%; opacity: 0.8; will-change: transform; }
.hero .aurora .a1 { width: 52vw; height: 52vw; left: 52%; top: -14%;
  background: radial-gradient(circle at 30% 30%, #12b3a3, transparent 66%);
  animation: drift1 22s ease-in-out infinite; }
.hero .aurora .a2 { width: 44vw; height: 44vw; left: -8%; top: 12%;
  background: radial-gradient(circle at 40% 40%, #f59e0b, transparent 64%); opacity: 0.5;
  animation: drift2 26s ease-in-out infinite; }
.hero .aurora .a3 { width: 42vw; height: 42vw; left: 26%; top: 42%;
  background: radial-gradient(circle at 50% 50%, #6366f1, transparent 62%); opacity: 0.5;
  animation: drift3 30s ease-in-out infinite; }
@keyframes drift1 { 0%,100%{ transform: translate(0,0) scale(1);} 50%{ transform: translate(-6%,6%) scale(1.12);} }
@keyframes drift2 { 0%,100%{ transform: translate(0,0) scale(1);} 50%{ transform: translate(8%,-4%) scale(1.1);} }
@keyframes drift3 { 0%,100%{ transform: translate(0,0) scale(1);} 50%{ transform: translate(-5%,-7%) scale(1.15);} }

.hero-grid {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1fr; gap: 40px; align-items: center;
}
@media (min-width: 900px) {
  .hero-grid { grid-template-columns: 1.05fr 0.95fr; gap: 24px; }
}
.hero-copy { text-align: center; }
@media (min-width: 900px) { .hero-copy { text-align: left; } }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; font-size: 0.8rem;
  letter-spacing: 0.13em; text-transform: uppercase; color: var(--gold-bright);
  font-weight: 700; background: var(--gold-soft); padding: 7px 15px;
  border-radius: 999px; margin-bottom: 20px; border: 1px solid rgba(245,158,11,.25);
}
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--gold-bright); box-shadow: 0 0 10px var(--gold-bright);
  animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%,100%{ opacity: 1; transform: scale(1);} 50%{ opacity: .4; transform: scale(.7);} }

.hero h1 {
  font-size: clamp(1.95rem, 5.4vw, 3.8rem); line-height: 1.06; margin: 0 0 18px;
  font-weight: 800; letter-spacing: -0.025em; max-width: 16ch;
}
@media (min-width: 900px) { .hero h1 { margin-left: 0; } }
@media (max-width: 899px) { .hero h1 { margin-left: auto; margin-right: auto; } }
.hero h1 .accent {
  background: linear-gradient(105deg, var(--teal-bright) 10%, var(--gold-bright) 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  position: relative;
}
.hero p.lede {
  font-size: clamp(1.02rem, 2.2vw, 1.24rem); color: var(--ink-dim);
  max-width: 54ch; margin: 0 0 28px;
}
@media (max-width: 899px) { .hero p.lede { margin-left: auto; margin-right: auto; } }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
@media (max-width: 899px) { .cta-row { justify-content: center; } }
.hero .stats {
  display: flex; gap: 26px; flex-wrap: wrap; margin-top: 34px;
  color: var(--ink-faint); font-size: 0.85rem;
}
@media (max-width: 899px) { .hero .stats { justify-content: center; gap: 18px; } }
.hero .stats > div { flex: 0 0 auto; }
.hero .stats b { color: var(--ink); font-size: clamp(1.35rem, 4vw, 1.7rem); display: block;
  font-weight: 800; letter-spacing: -0.02em;
  background: linear-gradient(120deg, var(--teal-bright), var(--gold-bright));
  -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- Hero signature visual: globe + flight arc ---------- */
.hero-visual { position: relative; z-index: 2; display: grid; place-items: center; }
.globe-wrap { position: relative; width: min(430px, 82vw); aspect-ratio: 1; }
.globe-wrap svg { width: 100%; height: 100%; overflow: visible; }
.orbit-ring {
  position: absolute; inset: -4%; border-radius: 50%;
  border: 1px dashed rgba(148,163,184,0.28);
  animation: spin 40s linear infinite;
}
.orbit-ring::after {
  content: ""; position: absolute; top: -5px; left: 50%; width: 10px; height: 10px;
  border-radius: 50%; background: var(--gold-bright); box-shadow: 0 0 14px var(--gold-bright);
  transform: translateX(-50%);
}
@keyframes spin { to { transform: rotate(360deg); } }
.flight-plane {
  position: absolute; top: 0; left: 0; color: var(--gold-bright);
  filter: drop-shadow(0 0 6px rgba(251,191,36,.8));
  offset-path: path("M 60 300 Q 215 40 370 210");
  offset-rotate: auto;
  animation: fly 6s var(--ease) infinite;
}
@keyframes fly { 0%{ offset-distance: 0%; opacity: 0; } 8%{ opacity: 1; }
  92%{ opacity: 1; } 100%{ offset-distance: 100%; opacity: 0; } }
.city-dot { transform-box: fill-box; transform-origin: center; animation: ping 2.4s ease-out infinite; }
.city-dot.d2 { animation-delay: 1.2s; }
@keyframes ping { 0%{ opacity: .5; } 50%{ opacity: 1; } 100%{ opacity: .5; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  cursor: pointer; font-family: inherit; font-size: 1rem; font-weight: 700;
  padding: 14px 24px; border-radius: 13px; border: 1px solid transparent;
  transition: transform .18s var(--ease), box-shadow .18s, background .18s, border-color .18s;
  min-height: 50px; position: relative; overflow: hidden;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: linear-gradient(135deg, var(--teal-bright), var(--teal) 70%);
  color: #032420; box-shadow: 0 10px 26px -8px rgba(13,148,136,0.65), inset 0 1px 0 rgba(255,255,255,.3);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 34px -10px rgba(13,148,136,0.8); }
.btn-primary::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,.35) 50%, transparent 70%);
  transform: translateX(-120%); transition: transform .6s var(--ease);
}
.btn-primary:hover::after { transform: translateX(120%); }
.btn-ghost { background: rgba(255,255,255,0.05); color: var(--ink); border-color: var(--line-2); }
.btn-ghost:hover { background: rgba(255,255,255,0.1); transform: translateY(-2px); }
.btn-block { width: 100%; }

/* ---------- Sections ---------- */
section { padding: clamp(44px, 6vw, 72px) 0; position: relative; }
.section-head { text-align: center; max-width: 62ch; margin: 0 auto 34px; }
.section-head h2 {
  font-size: clamp(1.6rem, 4vw, 2.3rem); margin: 0 0 12px; font-weight: 800;
  letter-spacing: -0.02em;
}
.section-head p { color: var(--ink-dim); margin: 0; font-size: 1.02rem; }

/* ---------- Tabs ---------- */
.tabs { position: sticky; top: 62px; z-index: 20; padding: 12px 0;
  background: linear-gradient(var(--navy) 68%, transparent); }
.tablist {
  display: flex; gap: 6px; overflow-x: auto; padding: 6px;
  scrollbar-width: thin; -webkit-overflow-scrolling: touch;
  background: rgba(17, 28, 49, 0.7); backdrop-filter: blur(8px);
  border: 1px solid var(--line); border-radius: 16px;
}
.tablist::-webkit-scrollbar { height: 5px; }
.tablist::-webkit-scrollbar-thumb { background: var(--navy-3); border-radius: 6px; }
.tab {
  flex: 0 0 auto; cursor: pointer; font-family: inherit; font-weight: 600;
  font-size: 0.94rem; color: var(--ink-dim); background: transparent;
  border: 1px solid transparent; padding: 11px 16px; border-radius: 11px;
  white-space: nowrap; min-height: 46px; display: flex; align-items: center; gap: 9px;
  transition: background .18s, color .18s, transform .18s var(--ease);
}
.tab:hover { color: var(--ink); background: rgba(255,255,255,0.05); }
.tab[aria-selected="true"] {
  color: #032420;
  background: linear-gradient(135deg, var(--teal-bright), var(--teal));
  box-shadow: var(--glow-teal); transform: translateY(-1px);
}
.tab .tnum {
  font-size: 0.72rem; font-weight: 800; width: 20px; height: 20px;
  display: grid; place-items: center; border-radius: 6px;
  background: rgba(255,255,255,0.12);
}
.tab[aria-selected="true"] .tnum { background: rgba(3,36,32,0.18); }

/* scroll affordance for the tab strip (shows only when it overflows) */
.tablist-wrap { position: relative; }
.tablist-wrap::after {
  content: ""; position: absolute; top: 6px; bottom: 6px; right: 0; width: 60px;
  background: linear-gradient(90deg, transparent, var(--navy) 82%);
  border-radius: 0 16px 16px 0; pointer-events: none; opacity: 0; transition: opacity .3s;
}
.tablist-wrap.scrollable::after { opacity: 1; }
.tablist-wrap.at-end::after { opacity: 0; }
.scroll-hint {
  position: absolute; top: 50%; right: 9px; transform: translateY(-50%);
  display: none; align-items: center; pointer-events: none; z-index: 2;
  font-size: 0.74rem; font-weight: 800; letter-spacing: .02em; color: #04231f;
  background: linear-gradient(135deg, var(--gold-bright), var(--gold));
  padding: 6px 11px; border-radius: 999px;
  box-shadow: 0 4px 14px -3px rgba(245,158,11,.6);
  animation: hintBob 1.5s ease-in-out infinite;
}
.tablist-wrap.scrollable .scroll-hint { display: inline-flex; }
.tablist-wrap.scrolled .scroll-hint { display: none; }
.scroll-hint .arw { font-size: 1.05rem; line-height: 1; margin-left: 1px; }
@keyframes hintBob { 0%,100% { transform: translateY(-50%) translateX(0); } 50% { transform: translateY(-50%) translateX(4px); } }

/* ---------- Panels / cards ---------- */
.panel { display: none; }
.panel.active { display: block; animation: panelIn .5s var(--ease); }
@keyframes panelIn { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

.card {
  position: relative;
  background: linear-gradient(180deg, rgba(26,39,64,0.55), rgba(11,18,32,0.4));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(20px, 3vw, 30px); box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: linear-gradient(135deg, rgba(45,212,191,0.4), transparent 40%, transparent 70%, rgba(245,158,11,0.3));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; opacity: .7;
}
.calc-grid { display: grid; grid-template-columns: 1fr; gap: 22px; position: relative; }
@media (min-width: 880px) {
  .calc-grid { grid-template-columns: minmax(320px, 400px) 1fr; align-items: start; }
}
.calc-intro h3 { margin: 0 0 8px; font-size: 1.4rem; letter-spacing: -0.01em; }
.calc-intro p { color: var(--ink-dim); margin: 0 0 6px; font-size: 0.98rem; }

/* ---------- Forms ---------- */
.field { margin-bottom: 17px; }
.field label { display: block; font-weight: 600; margin-bottom: 7px; font-size: 0.94rem; color: var(--ink); }
.field .hint { font-weight: 400; color: var(--ink-faint); font-size: 0.85rem; }
.field input, .field select, .field textarea {
  width: 100%; font-family: inherit; font-size: 1rem; color: var(--ink);
  background: rgba(11,18,32,0.7); border: 1px solid var(--line-2);
  border-radius: var(--radius-sm); padding: 13px 14px; min-height: 50px;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--teal); background: rgba(11,18,32,0.95);
  box-shadow: 0 0 0 4px var(--teal-soft);
}
.field select { appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='none' stroke='%23aab7cd' stroke-width='2' viewBox='0 0 24 24'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center; padding-right: 40px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 520px) { .row2 { grid-template-columns: 1fr; } }
.range-wrap { display: flex; align-items: center; gap: 14px; }
.range-wrap input[type=range] { flex: 1; min-height: auto; padding: 0; accent-color: var(--teal-bright); }
.range-val { font-weight: 800; color: var(--teal-bright); min-width: 2.5ch; text-align: right; font-size: 1.1rem; }

/* ---------- Disclaimer ---------- */
.disclaimer {
  font-size: 0.84rem; color: var(--ink-dim); background: rgba(245,158,11,0.06);
  border: 1px solid var(--gold-soft); border-left: 3px solid var(--gold);
  border-radius: 12px; padding: 13px 15px; margin-top: 18px;
}
.disclaimer strong { color: var(--gold-bright); }

/* ---------- Results ---------- */
.result { margin-top: 2px; }
.result:empty { display: none; }
.result-inner { animation: fade .5s var(--ease); }
.result h4 { margin: 0 0 6px; font-size: 1.25rem; letter-spacing: -0.01em; }
.result .placeholder {
  color: var(--ink-faint); text-align: center; padding: 48px 22px;
  border: 1px dashed var(--line-2); border-radius: var(--radius);
  background: radial-gradient(120% 100% at 50% 0%, rgba(45,212,191,0.05), transparent 70%);
}
.result .placeholder svg { width: 46px; height: 46px; opacity: .5; margin: 0 auto 12px; }

.score-block { display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  background: linear-gradient(120deg, rgba(26,39,64,0.6), rgba(11,18,32,0.3));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; margin-bottom: 20px; }
.gauge { position: relative; width: 104px; height: 104px; flex: 0 0 auto; }
.gauge svg { transform: rotate(-90deg); }
.gauge .gval { position: absolute; inset: 0; display: grid; place-items: center;
  font-weight: 800; font-size: 1.7rem; letter-spacing: -0.02em; }
.score-meta { flex: 1; min-width: 190px; }
.score-meta .label { font-size: 0.78rem; text-transform: uppercase;
  letter-spacing: .09em; color: var(--ink-faint); font-weight: 700; }
.score-meta .verdict { font-size: 1.35rem; font-weight: 800; margin: 2px 0 5px; letter-spacing: -0.01em; }
.score-meta p { margin: 0; color: var(--ink-dim); font-size: 0.94rem; }
.bar { height: 9px; border-radius: 999px; background: var(--navy-3); overflow: hidden; margin-top: 10px; }
.bar > span { display: block; height: 100%; border-radius: 999px; width: 0;
  background: linear-gradient(90deg, var(--teal-bright), var(--gold-bright));
  transition: width 1.1s var(--ease); }

.next-action {
  display: flex; gap: 13px; align-items: flex-start;
  background: linear-gradient(120deg, rgba(13,148,136,0.16), rgba(13,148,136,0.05));
  border: 1px solid rgba(13,148,136,0.35);
  border-radius: var(--radius); padding: 16px 17px; margin: 20px 0;
}
.next-action .na-icon { flex: 0 0 auto; width: 32px; height: 32px; border-radius: 9px;
  background: linear-gradient(135deg, var(--teal-bright), var(--teal)); color: #032420;
  display: grid; place-items: center; font-weight: 800; font-size: 1.1rem;
  box-shadow: var(--glow-teal); }
.next-action .na-body strong { display: block; color: var(--teal-bright); font-size: 0.8rem;
  text-transform: uppercase; letter-spacing: .08em; margin-bottom: 2px; }

.day-block { margin-bottom: 16px; }
.day-block > .day-title {
  font-weight: 800; color: var(--gold-bright); margin-bottom: 9px; font-size: 1.04rem;
  display: flex; align-items: center; gap: 9px;
}
.day-title .chip { font-size: 0.72rem; background: var(--gold-soft); color: var(--gold-bright);
  padding: 3px 10px; border-radius: 999px; font-weight: 700; border: 1px solid rgba(245,158,11,.28); }
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li {
  display: grid; grid-template-columns: 78px 1fr; gap: 13px;
  padding: 11px 0; border-bottom: 1px solid var(--line); align-items: start;
}
.timeline li:last-child { border-bottom: 0; }
.timeline .t-time { font-weight: 800; color: var(--teal-bright); font-size: 0.9rem; }
.timeline .t-body { font-size: 0.96rem; }
.timeline .t-body .t-tag {
  display: inline-block; font-size: 0.7rem; font-weight: 700; padding: 2px 9px;
  border-radius: 999px; margin-right: 8px; text-transform: uppercase; letter-spacing: .04em;
}
.tag-light { background: rgba(245,158,11,.16); color: var(--gold-bright); }
.tag-dark { background: rgba(99,102,241,.18); color: #a5b4fc; }
.tag-sleep { background: rgba(139,92,246,.18); color: #c4b5fd; }
.tag-wake { background: rgba(34,197,94,.16); color: #86efac; }
.tag-meal { background: rgba(20,184,166,.16); color: var(--teal-bright); }
.tag-move { background: rgba(236,72,153,.16); color: #f9a8d4; }
.tag-info { background: rgba(148,163,184,.16); color: var(--ink-dim); }

.htimeline { margin: 18px 0; }
.htimeline .track {
  position: relative; height: 50px; border-radius: 12px; overflow: hidden;
  background: var(--navy-3); border: 1px solid var(--line);
}
.htimeline .seg { position: absolute; top: 0; bottom: 0; display: grid; place-items: center;
  font-size: 0.72rem; font-weight: 700; color: #0b1220; overflow: hidden; white-space: nowrap;
  animation: segIn .8s var(--ease) both; }
@keyframes segIn { from { clip-path: inset(0 100% 0 0); } to { clip-path: inset(0 0 0 0); } }
.seg-sleep { background: linear-gradient(180deg,#8b5cf6,#7c3aed); color: #fff; }
.seg-awake { background: linear-gradient(180deg,#334155,#1e293b); color: var(--ink-dim); }
.seg-light { background: linear-gradient(180deg,#fbbf24,#f59e0b); }
.seg-avoid { background: repeating-linear-gradient(45deg,#312e81,#312e81 6px,#3730a3 6px,#3730a3 12px); color:#c7d2fe; }
.htimeline .axis { display: flex; justify-content: space-between; margin-top: 7px;
  color: var(--ink-faint); font-size: 0.74rem; }
.legend { display: flex; gap: 15px; flex-wrap: wrap; margin-top: 11px; font-size: 0.82rem; color: var(--ink-dim); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 14px; height: 14px; border-radius: 4px; display: inline-block; }

.win-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; margin: 18px 0; }
@media (max-width: 560px){ .win-grid { grid-template-columns: 1fr; } }
.win { background: rgba(11,18,32,0.6); border: 1px solid var(--line-2); border-radius: 14px; padding: 15px; }
.win h5 { margin: 0 0 6px; font-size: 0.8rem; text-transform: uppercase; letter-spacing: .07em; }
.win.seek h5 { color: var(--gold-bright); }
.win.avoid h5 { color: #a5b4fc; }
.win .big { font-size: 1.18rem; font-weight: 800; letter-spacing: -0.01em; }
.win p { margin: 5px 0 0; font-size: 0.88rem; color: var(--ink-dim); }

.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 11px; margin: 16px 0; }
@media (max-width: 520px){ .facts { grid-template-columns: 1fr; } }
.fact { background: rgba(11,18,32,0.6); border: 1px solid var(--line); border-radius: 12px; padding: 13px 15px;
  transition: transform .18s var(--ease), border-color .18s; }
.fact:hover { transform: translateY(-2px); border-color: var(--line-2); }
.fact .fk { font-size: 0.76rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: .05em; }
.fact .fv { font-size: 1.12rem; font-weight: 800; letter-spacing: -0.01em; }

.tips { margin: 16px 0 0; padding: 0; list-style: none; }
.tips li { position: relative; padding: 7px 0 7px 28px; color: var(--ink-dim); font-size: 0.95rem; }
.tips li::before { content: "→"; position: absolute; left: 0; color: var(--teal-bright); font-weight: 800; }

.block-heading { margin: 22px 0 12px; }
.guide-line { margin-top: 20px; font-size: 0.86rem; color: var(--ink-faint);
  border-top: 1px solid var(--line); padding-top: 13px; font-style: italic; }

/* ---------- Ads ---------- */
.adsense-placeholder {
  display: grid; place-items: center; margin: 30px auto; max-width: 970px; min-height: 96px;
  border: 1px dashed var(--line); border-radius: 14px;
  background: repeating-linear-gradient(135deg, rgba(255,255,255,0.012),
    rgba(255,255,255,0.012) 12px, transparent 12px, transparent 24px);
  color: var(--ink-faint); font-size: 0.78rem; letter-spacing: .08em; text-transform: uppercase;
}

/* ---------- Feature cards (how it works) ---------- */
.feature-card { transition: transform .25s var(--ease), border-color .25s; }
.feature-card:hover { transform: translateY(-4px); border-color: var(--line-2); }
.feature-card .ico {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  margin-bottom: 14px; background: linear-gradient(135deg, rgba(45,212,191,.2), rgba(79,70,229,.16));
  border: 1px solid var(--line-2); color: var(--teal-bright);
}
.feature-card .ico svg { width: 24px; height: 24px; }

/* ---------- FAQ ---------- */
.faq { max-width: 830px; margin: 0 auto; }
.faq details {
  background: linear-gradient(180deg, rgba(26,39,64,0.5), rgba(11,18,32,0.3));
  border: 1px solid var(--line); border-radius: 14px; margin-bottom: 12px; padding: 4px 20px;
  transition: border-color .18s, background .18s;
}
.faq details[open] { border-color: rgba(13,148,136,0.5); background: rgba(13,148,136,0.05); }
.faq summary {
  cursor: pointer; font-weight: 700; padding: 16px 0; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 12px; font-size: 1.04rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--gold-bright); font-size: 1.6rem; font-weight: 300;
  transition: transform .25s var(--ease); line-height: 1; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0 0 16px; color: var(--ink-dim); animation: fade .35s var(--ease); }

/* ---------- Content pages ---------- */
.content { max-width: 800px; margin: 0 auto; }
.content h1 { font-size: clamp(1.9rem, 5vw, 2.8rem); margin: 0 0 10px; letter-spacing: -0.02em; }
.content .updated { color: var(--ink-faint); font-size: 0.88rem; margin-bottom: 28px; }
.content h2 { margin: 34px 0 12px; font-size: 1.45rem; letter-spacing: -0.01em; }
.content h3 { margin: 24px 0 8px; font-size: 1.14rem; }
.content p, .content li { color: var(--ink-dim); }
.content ul, .content ol { padding-left: 22px; }
.content li { margin-bottom: 8px; }
.content .callout {
  background: linear-gradient(120deg, rgba(13,148,136,0.16), rgba(13,148,136,0.05));
  border: 1px solid rgba(13,148,136,0.35); border-radius: 14px; padding: 17px 19px; margin: 22px 0;
}
.content .callout strong { color: var(--teal-bright); }
.content form .field { margin-bottom: 16px; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(17,28,49,0.6), var(--navy));
  padding: 48px 0 32px; margin-top: 40px; color: var(--ink-dim);
}
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 34px; }
@media (max-width: 680px){ .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; } }
@media (max-width: 440px){ .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h4 { color: var(--ink); font-size: 0.9rem; text-transform: uppercase; letter-spacing: .08em; margin: 0 0 13px; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 9px; }
.footer-grid a { color: var(--ink-dim); font-size: 0.94rem; }
.footer-grid a:hover { color: var(--teal-bright); }
.footer-legal { margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--line);
  font-size: 0.84rem; color: var(--ink-faint); text-align: center; }
.footer-legal strong { color: var(--ink-dim); }

.skip-link { position: absolute; left: -999px; top: 0; background: var(--gold);
  color: #241300; padding: 10px 16px; border-radius: 0 0 8px 0; z-index: 100; font-weight: 700; }
.skip-link:focus { left: 0; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }
.reveal[data-delay="5"] { transition-delay: .40s; }

@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* two-column feature row (responsive) */
.duo { display: grid; grid-template-columns: 1fr; gap: 18px; }
@media (min-width: 760px) { .duo { grid-template-columns: 1fr 1fr; gap: 20px; } }

/* interactive constellation canvas in hero */
.hero-canvas { position: absolute; inset: 0; z-index: 1; width: 100%; height: 100%;
  pointer-events: none; opacity: 0.9; }

/* ---------- Mobile refinements ---------- */
@media (max-width: 720px) {
  body { font-size: 16px; line-height: 1.58; }
  .nav { padding: 12px 18px; }
  .nav-links { display: none; }
  .globe-wrap { width: min(320px, 74vw); }
  .feature-card .ico { width: 42px; height: 42px; }
  .feature-card .ico svg { width: 22px; height: 22px; }
  .tabs { top: 58px; }
  .section-head { margin-bottom: 26px; }
}
@media (max-width: 380px) {
  .hero .stats { gap: 14px; }
  .hero .stats b { font-size: 1.3rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .flight-plane { offset-distance: 55% !important; opacity: 1 !important; }
}