/* ============================================================
   CGT Calculator landing · page layout (graphite + glass)
   ============================================================ */

.page { display: flex; flex-direction: column; min-height: 100vh; }
.frame { max-width: 1480px; margin: 0 auto; width: 100%; padding-inline: 24px; }
@media (min-width: 1024px) { .frame { padding-inline: 40px; } }

/* ============ NAV ============ */
.cgt-nav { position: sticky; top: 0; left: 0; right: 0; z-index: 40; padding: 14px 24px; }
.cgt-nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1480px; margin: 0 auto; gap: 24px;
  padding: 10px 18px;
  position: relative;
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  background-color: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  box-shadow: 0 1px 0 rgba(255,255,255,0.7) inset, 0 8px 24px -16px rgba(20,24,31,0.18);
}
.cgt-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); }
.cgt-brand .logo { width: 22px; height: 22px; }
.cgt-brand .word { font: 600 17px var(--font-sans); letter-spacing: -0.025em; }
.cgt-brand .sub { font: 500 10.5px var(--font-mono); color: var(--ink-4); letter-spacing: 0.1em; text-transform: uppercase; margin-left: 4px; padding-left: 10px; border-left: 1px solid var(--hairline); }
.cgt-nav-links { display: none; gap: 28px; }
@media (min-width: 900px) {
  .cgt-nav-links {
    display: flex;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }
}
.cgt-nav-links a {
  font: 500 13.5px var(--font-sans); color: var(--ink-3);
  transition: color 0.2s var(--ease);
}
.cgt-nav-links a:hover { color: var(--ink); }
.cgt-nav-cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 16px; border-radius: 10px;
  font: 500 13px var(--font-sans); letter-spacing: -0.005em;
  background: linear-gradient(180deg, #232936 0%, #14181f 100%);
  color: #fff;
  border: 1px solid rgba(20,24,31,0.6);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.18),
    inset 0 -1px 0 rgba(0,0,0,0.30),
    0 1px 2px rgba(20,24,31,0.20),
    0 6px 16px -6px rgba(20,24,31,0.30);
  transition: background 0.2s var(--ease);
}
.cgt-nav-cta:hover { background: linear-gradient(180deg, #2c3340 0%, #1a1f29 100%); }
.cgt-nav-cta .arr { transition: transform 0.25s var(--ease); }
.cgt-nav-cta:hover .arr { transform: translateX(3px); }

/* ============ HERO ============ */
.cgt-hero { padding: 56px 24px 96px; }
.cgt-hero-inner { max-width: 1480px; margin: 0 auto;
  display: grid; grid-template-columns: minmax(0, 1fr); gap: 36px; align-items: center;
}
@media (min-width: 1024px) { .cgt-hero-inner { grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 56px; } }

.cgt-hero-left { min-width: 0; max-width: 100%; }

.cgt-hero-left .step-tag { margin-bottom: 24px; }
.cgt-hero-headline {
  font: 600 clamp(44px, 6vw, 84px)/0.98 var(--font-sans);
  letter-spacing: -0.04em;
  color: var(--ink);
  margin-bottom: 24px;
  max-width: 12ch;
}
.cgt-hero-headline em {
  font-family: var(--font-mono);
  font-style: normal;
  font-weight: 500;
  letter-spacing: -0.04em;
  color: var(--ink-3);
}
.cgt-hero-sub {
  font: 400 17.5px/1.55 var(--font-sans);
  color: var(--ink-3);
  max-width: 52ch;
  margin-bottom: 32px;
}
.cgt-hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 36px; }

/* Hero stats strip */
.cgt-hero-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 18px; padding-top: 22px;
  border-top: 1px solid var(--hairline);
  max-width: 480px;
}
.cgt-hero-stats .stat .l { font: 500 10px var(--font-sans); letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-5); margin-bottom: 6px; }
.cgt-hero-stats .stat .v { font: 600 22px var(--font-mono); letter-spacing: -0.025em; color: var(--ink); }
.cgt-hero-stats .stat .v small { font-size: 12px; font-weight: 400; color: var(--ink-4); margin-left: 4px; }

/* Hero right — preview of a real TaxSummary panel */
.cgt-hero-right { position: relative; }
.preview-summary {
  padding: 28px 26px; display: flex; flex-direction: column; gap: 22px;
}
.preview-summary .hd { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.preview-summary .hd h3 { font: 600 14px var(--font-sans); color: var(--ink); letter-spacing: -0.005em; }
.preview-summary .hd .meta { font: 400 11px var(--font-sans); color: var(--ink-5); }
.metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.metric {
  border-radius: 14px; padding: 14px 16px;
  background: rgba(255,255,255,0.40);
  border: 1px solid var(--hairline);
}
.metric.emphasis {
  background: rgba(255,255,255,0.78);
  border: 1px solid rgba(255,255,255,0.85);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.95),
    0 2px 4px rgba(20,24,31,0.05),
    0 16px 40px -12px rgba(20,24,31,0.12);
}
.metric .l { font: 500 10px var(--font-sans); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-5); margin-bottom: 8px; }
.metric .v { font: 600 22px var(--font-mono); letter-spacing: -0.025em; color: var(--ink); font-variant-numeric: tabular-nums; }
.metric.emphasis .v { font-size: 26px; }

/* Equation strip inside preview */
.eq-strip {
  border-radius: 14px; padding: 14px 18px;
  background: rgba(255,255,255,0.30); border: 1px solid var(--hairline);
  display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap;
}
.eq-strip .term { display: flex; flex-direction: column; }
.eq-strip .term .l { font: 500 9.5px var(--font-sans); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-5); margin-bottom: 2px; }
.eq-strip .term .v { font: 600 16px var(--font-mono); color: var(--ink); }
.eq-strip .op { font: 400 18px var(--font-mono); color: var(--ink-5); }

.pool-row {
  border-radius: 14px; padding: 12px 14px;
  background: rgba(255,255,255,0.40); border: 1px solid var(--hairline);
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px;
}
.pool-row .lt { display: flex; align-items: center; gap: 10px; }
.pool-row .lt .tk { font: 600 13px var(--font-mono); letter-spacing: 0.04em; color: var(--ink); }
.pool-row .lt .desc { font: 400 11px var(--font-sans); color: var(--ink-5); }
.pool-row .rt { display: flex; gap: 14px; }
.pool-row .rt .ps { display: inline-flex; align-items: baseline; gap: 6px; }
.pool-row .rt .ps .l { font: 500 9.5px var(--font-sans); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-5); }
.pool-row .rt .ps .v { font: 500 12px var(--font-mono); color: var(--ink); }

/* Hero marquee (monochrome) */
.cgt-hero-marquee { margin-top: 36px; padding-top: 22px; border-top: 1px solid var(--hairline); }
.cgt-hero-marquee .marquee-label { font: 500 10px var(--font-sans); letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-5); margin-bottom: 12px; }
.cgt-hero-marquee .halo-marquee-track > span { margin: 0 22px; font: 500 13px var(--font-mono); letter-spacing: 0.06em; color: var(--ink-4); white-space: nowrap; }

/* ============ SECTIONS ============ */
.cgt-section { padding: 96px 24px; }
.cgt-section + .cgt-section { padding-top: 0; }

.section-head { margin-bottom: 36px; max-width: 1480px; margin-inline: auto; }
.section-head .step-tag { margin-bottom: 14px; }
.section-head h2 {
  font: 600 clamp(34px, 4vw, 52px)/1.02 var(--font-sans);
  letter-spacing: -0.035em; color: var(--ink);
  margin-bottom: 10px; max-width: 24ch;
}
.section-head .lede {
  font: 400 17px/1.55 var(--font-sans);
  color: var(--ink-3); max-width: 60ch;
}

/* Meet — feature cards */
.meet-grid { max-width: 1480px; margin: 0 auto;
  display: grid; gap: 14px;
  grid-template-columns: 1fr;
}
@media (min-width: 768px) { .meet-grid { grid-template-columns: repeat(3, 1fr); } }

.feature-card {
  padding: 26px;
  min-height: 320px;
  border-radius: 16px;
  display: flex; flex-direction: column; justify-content: space-between;
  position: relative; overflow: hidden;
}
.feature-card h3 { font: 600 22px/1.15 var(--font-sans); letter-spacing: -0.025em; color: var(--ink); margin-top: 14px; margin-bottom: 12px; }
.feature-card p { font: 400 14px/1.55 var(--font-sans); color: var(--ink-3); }

.feature-card.dark {
  background: linear-gradient(180deg, #232936 0%, #14181f 100%);
  border: 1px solid rgba(20,24,31,0.6);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.10),
    inset 0 -1px 0 rgba(0,0,0,0.30),
    0 1px 2px rgba(20,24,31,0.20),
    0 16px 40px -16px rgba(20,24,31,0.35);
}
.feature-card.dark h3 { color: #fff; }
.feature-card.dark p { color: rgba(255,255,255,0.66); }
.feature-card.dark .feat-chip { color: rgba(255,255,255,0.65); background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.15); }

.feat-chip {
  display: inline-flex; align-items: center; gap: 6px;
  font: 500 10.5px var(--font-mono); letter-spacing: 0.06em;
  color: var(--ink-3); background: rgba(255,255,255,0.5);
  border: 1px solid var(--hairline-strong);
  padding: 4px 10px; border-radius: 999px;
}

/* ============ Backed by ============ */
.cgt-backed { padding: 32px 24px 56px; }
.cgt-backed-inner { max-width: 1480px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr; gap: 16px; align-items: center;
}
@media (min-width: 768px) { .cgt-backed-inner { grid-template-columns: 1fr 3fr; gap: 36px; } }
.cgt-backed-label { font: 400 13px/1.5 var(--font-sans); color: var(--ink-4); }
.cgt-backed .halo-marquee-track > span {
  margin: 0 36px;
  font: 500 13px var(--font-mono); letter-spacing: 0.06em;
  color: var(--ink-4); white-space: nowrap;
}

/* ============ Use cases ============ */
.uses-grid { max-width: 1480px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr; gap: 28px; align-items: start;
}
@media (min-width: 900px) { .uses-grid { grid-template-columns: 1fr 1.1fr; gap: 36px; } }
.uses-left { padding-top: 12px; }
.uses-left .step-tag { margin-bottom: 14px; }
.uses-left h2 { font: 600 clamp(36px, 4.5vw, 56px)/1.02 var(--font-sans); letter-spacing: -0.04em; margin-bottom: 14px; }
.uses-left p { font: 400 16px/1.6 var(--font-sans); color: var(--ink-3); max-width: 36ch; }

.use-card {
  position: relative; min-height: 600px;
  border-radius: 20px; overflow: hidden;
  background: linear-gradient(160deg, #1a1f29 0%, #14181f 100%);
  border: 1px solid rgba(20,24,31,0.6);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.06),
    0 24px 60px -28px rgba(20,24,31,0.45);
}
.use-bg { position: absolute; inset: 0; opacity: 0.42; pointer-events: none; }
.use-content { position: relative; z-index: 2; padding: 40px; color: #fff; }
.use-content .step-tag { color: rgba(255,255,255,0.62); background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.15); margin-bottom: 16px; }
.use-content .step-tag::before { background: #fff; }
.use-tabs { display: inline-flex; gap: 4px; padding: 4px; margin-bottom: 24px;
  background: rgba(255,255,255,0.08); border-radius: 999px;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.use-tabs button {
  font: 500 12.5px var(--font-sans);
  padding: 8px 14px; border: 0; cursor: pointer;
  background: transparent; color: rgba(255,255,255,0.62);
  border-radius: 999px;
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
}
.use-tabs button.active { background: #fff; color: var(--ink); font-weight: 600; }
.use-content h3 { font: 600 clamp(32px, 3.6vw, 48px)/1.05 var(--font-sans); letter-spacing: -0.03em; color: #fff; margin-bottom: 18px; max-width: 14ch; white-space: pre-line; }
.use-content p { font: 400 15.5px/1.6 var(--font-sans); color: rgba(255,255,255,0.7); max-width: 40ch; margin-bottom: 28px; }
.use-cta { display: inline-flex; align-items: center; gap: 12px; font: 500 14px var(--font-sans); color: #fff; }
.use-cta .circ { width: 32px; height: 32px; border-radius: 50%; background: #fff; color: var(--ink); display: inline-flex; align-items: center; justify-content: center; transition: transform 0.3s var(--ease); }
.use-cta:hover .circ { transform: translateX(3px); }

/* ============ Four rules ============ */
.rules-grid { max-width: 1480px; margin: 0 auto;
  display: grid; gap: 14px; grid-template-columns: 1fr;
}
@media (min-width: 768px) { .rules-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .rules-grid { grid-template-columns: repeat(4, 1fr); } }

.rule-card {
  padding: 24px;
  min-height: 280px;
  border-radius: 16px;
  display: flex; flex-direction: column; justify-content: space-between;
  position: relative; overflow: hidden;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.rule-card:hover { transform: translateY(-4px); box-shadow:
  inset 0 1px 0 rgba(255,255,255,0.95),
  0 2px 4px rgba(20,24,31,0.05),
  0 24px 56px -24px rgba(20,24,31,0.20);
}
.rule-card .rule-num {
  font: 500 11px var(--font-mono); letter-spacing: 0.08em;
  color: var(--ink-5); text-transform: uppercase; margin-bottom: 10px;
}
.rule-card h3 { font: 600 21px/1.15 var(--font-sans); letter-spacing: -0.025em; color: var(--ink); margin-bottom: 8px; }
.rule-card .zh { font: 400 11.5px var(--font-mono); letter-spacing: 0.04em; color: var(--ink-4); margin-bottom: 14px; }
.rule-card p { font: 400 13.5px/1.55 var(--font-sans); color: var(--ink-3); }
.rule-card .mini { margin-top: 18px; height: 52px; }
.rule-card .mini svg { width: 100%; height: 100%; transition: transform 0.5s var(--ease); }
.rule-card:hover .mini svg { transform: scale(1.04); }

/* ============ Footer ============ */
.cgt-foot { padding: 64px 24px 32px; }
.cgt-foot-inner { max-width: 1480px; margin: 0 auto; }
.cgt-foot-top {
  padding: 32px;
  display: grid; gap: 28px; grid-template-columns: 1fr;
}
@media (min-width: 768px) { .cgt-foot-top { grid-template-columns: 2fr 1fr 1fr 1fr; } }
.cgt-foot-brand .word-row { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); margin-bottom: 10px; }
.cgt-foot-brand .word-row .word { font: 600 20px var(--font-sans); letter-spacing: -0.025em; }
.cgt-foot-brand p { font: 400 13px/1.55 var(--font-sans); color: var(--ink-3); max-width: 34ch; }
.cgt-foot-top h4 { font: 600 10.5px var(--font-sans); letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-4); margin-bottom: 14px; }
.cgt-foot-top ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.cgt-foot-top ul a { font: 400 13.5px var(--font-sans); color: var(--ink-2); }
.cgt-foot-top ul a:hover { color: var(--ink); }
.cgt-foot-bot {
  padding-top: 22px; margin-top: 18px; border-top: 1px solid var(--hairline);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font: 400 11.5px var(--font-mono); color: var(--ink-5);
  letter-spacing: 0.02em;
}

/* ============================================================
   SCROLL REVEALS
   ============================================================ */
[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
[data-reveal].is-in { opacity: 1; transform: none; }
[data-reveal-stagger] > * { opacity: 0; transform: translateY(20px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
[data-reveal-stagger].is-in > * { opacity: 1; transform: none; }
[data-reveal-stagger].is-in > *:nth-child(1) { transition-delay: 0.05s; }
[data-reveal-stagger].is-in > *:nth-child(2) { transition-delay: 0.15s; }
[data-reveal-stagger].is-in > *:nth-child(3) { transition-delay: 0.25s; }
[data-reveal-stagger].is-in > *:nth-child(4) { transition-delay: 0.35s; }

/* Hero word-rise (on load) */
.cgt-hero-headline .word-rise { display: inline-block; overflow: hidden; vertical-align: bottom; line-height: 1; }
.cgt-hero-headline .word-rise > span { display: inline-block; transform: translateY(110%); animation: word-rise 1.1s var(--ease) forwards; }
.cgt-hero-headline .word-rise.d1 > span { animation-delay: 0.05s; }
.cgt-hero-headline .word-rise.d2 > span { animation-delay: 0.18s; }
.cgt-hero-headline .word-rise.d3 > span { animation-delay: 0.32s; }
@keyframes word-rise { to { transform: translateY(0); } }

.cgt-hero-sub, .cgt-hero-ctas, .cgt-hero-stats { opacity: 0; animation: fade-in-up 1s var(--ease) forwards; }
.cgt-hero-sub { animation-delay: 0.55s; }
.cgt-hero-ctas { animation-delay: 0.70s; }
.cgt-hero-stats { animation-delay: 0.85s; }
.cgt-hero-marquee { opacity: 0; animation: fade-in 0.8s var(--ease) 1.1s forwards; }
.cgt-hero-right { opacity: 0; transform: translateX(20px); animation: fade-in-right 0.9s var(--ease) 0.45s forwards; }

@keyframes fade-in-up { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fade-in-right { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes fade-in { to { opacity: 1; } }

/* Number tick animation inside preview */
@keyframes num-tick { 0% { opacity: 0; transform: translateY(8px); } 100% { opacity: 1; transform: translateY(0); } }
.preview-summary [data-tick] { display: inline-block; animation: num-tick 0.5s var(--ease) both; }

/* Counter for the rolling "matched" pulse on use card */
@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.6); opacity: 0; }
}

/* prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  [data-reveal], [data-reveal-stagger] > * { opacity: 1 !important; transform: none !important; }
  .cgt-hero-headline .word-rise > span { animation: none; transform: none; }
  .cgt-hero-sub, .cgt-hero-ctas, .cgt-hero-stats, .cgt-hero-marquee, .cgt-hero-right { opacity: 1; animation: none; transform: none; }
}