:root {
  --canvas: rgb(96% 95% 91%);
  --surface: #fffdf7;
  --ink: rgb(8.6% 7.5% 6%);
  --muted: rgb(36% 39% 37%);
  --line: rgb(8.6% 7.5% 6% / 0.12);
  --turf: rgb(5.5% 16% 13%);
  --turf-ink: #f3f1e8;
  --turf-muted: rgb(95% 94% 90% / 0.68);
  --court: rgb(62% 24% 7%);
  --ball: #ff7d1f;
  --net: rgb(48.6% 87.8% 76.5%);
  --radius: 16px;
  --wrap: 1120px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --canvas: rgb(7% 10% 9%);
    --surface: rgb(10% 14% 12.5%);
    --ink: #f3f1e8;
    --muted: rgb(95% 94% 90% / 0.66);
    --line: rgb(100% 100% 100% / 0.1);
    --turf: rgb(4% 12% 10%);
    --court: rgb(100% 62% 32%);
  }
}
:root[data-theme="dark"] {
  --canvas: rgb(7% 10% 9%);
  --surface: rgb(10% 14% 12.5%);
  --ink: #f3f1e8;
  --muted: rgb(95% 94% 90% / 0.66);
  --line: rgb(100% 100% 100% / 0.1);
  --turf: rgb(4% 12% 10%);
  --court: rgb(100% 62% 32%);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font: 17px/1.7 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--court); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--ball); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.01em; text-wrap: balance; }
p { text-wrap: pretty; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; z-index: 10; background: var(--surface); padding: 8px 12px; }

.site-header, .site-footer, .section, .document { width: min(100% - 32px, var(--wrap)); margin-inline: auto; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 0; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; font-weight: 700; font-size: 18px; }
.brand img { border-radius: 10px; }
.brand-sub { color: var(--muted); font-weight: 500; margin-left: 4px; }
.site-header nav { display: flex; gap: 22px; font-size: 15px; }
.site-header nav a { color: var(--ink); text-decoration: none; }
.site-header nav a:hover, .site-header nav a[aria-current] { color: var(--court); }
@media (max-width: 560px) {
  .brand-sub { display: none; }
  .site-header nav { gap: 14px; }
}

/* Hero */
.hero {
  width: min(100% - 32px, var(--wrap));
  margin: 8px auto 0;
  background: var(--turf);
  color: var(--turf-ink);
  border-radius: 28px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 32px;
  padding: clamp(32px, 6vw, 72px);
  overflow: hidden;
  position: relative;
}
.hero::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -46%;
  width: 90%; aspect-ratio: 2 / 1;
  translate: -50% 0;
  border: 1.5px solid rgb(100% 100% 100% / 0.08);
  border-radius: 50%;
  pointer-events: none;
}
.eyebrow { font-size: 14px; letter-spacing: 0.08em; color: var(--net); margin: 0 0 14px; font-weight: 600; }
.hero h1 { font-size: clamp(44px, 7.4vw, 88px); margin: 0; font-weight: 800; letter-spacing: -0.02em; }
.hero .lede { color: var(--turf-muted); font-size: clamp(17px, 2vw, 20px); max-width: 30em; margin: 20px 0 32px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.badge {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--turf-ink); color: rgb(8.6% 7.5% 6%);
  padding: 12px 20px; border-radius: 14px; font-weight: 600; text-decoration: none; font-size: 16px;
}
.badge[aria-disabled="true"] { cursor: default; }
.cta small { color: var(--turf-muted); font-size: 14px; }
.hero-shot { position: relative; z-index: 1; justify-self: center; width: min(100%, 320px); }
.phone {
  border-radius: 38px;
  border: 8px solid #1d1d1b;
  background: #1d1d1b;
  box-shadow: 0 30px 60px -20px rgb(0 0 0 / 0.55);
  overflow: hidden;
}
.phone img { width: 100%; }
.ball {
  position: absolute; width: 74px; height: 74px; left: -28px; top: 18%;
  border-radius: 50%;
  background: url("/assets/app-icon.webp") center / 152% no-repeat;
  box-shadow: 0 12px 24px -8px rgb(0 0 0 / 0.5);
  animation: bob 3.6s ease-in-out infinite;
}
@keyframes bob { 50% { translate: 0 -12px; } }
@media (prefers-reduced-motion: reduce) { .ball { animation: none; } }
@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; text-align: left; }
  .hero-shot { width: min(78%, 300px); }
}

/* Sections */
.section { padding: clamp(64px, 10vw, 120px) 0 0; }
.section-head { max-width: 640px; margin-bottom: 40px; }
.section-head h2 { font-size: clamp(30px, 4.4vw, 44px); margin: 0 0 12px; }
.section-head p { color: var(--muted); margin: 0; }
.kicker { color: var(--court); font-weight: 700; font-size: 14px; letter-spacing: 0.08em; margin: 0 0 10px; }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); }
.steps li { padding: 24px 20px 0 0; }
.steps b { display: block; font-size: 40px; font-weight: 800; color: var(--court); line-height: 1; margin-bottom: 14px; font-variant-numeric: tabular-nums; }
.steps h3 { font-size: 20px; margin: 0 0 6px; }
.steps p { color: var(--muted); margin: 0; font-size: 15px; }
@media (max-width: 760px) { .steps { grid-template-columns: 1fr 1fr; row-gap: 28px; } }

.split { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(32px, 6vw, 80px); align-items: center; }
.split .phone { max-width: 300px; justify-self: center; }
@media (max-width: 820px) { .split { grid-template-columns: 1fr; } .split .phone { order: 2; max-width: 260px; } }
.outcomes { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0 0; padding: 0; list-style: none; }
.outcomes li { border: 1px solid var(--line); background: var(--surface); padding: 6px 12px; border-radius: 999px; font-size: 14px; }
.power { margin-top: 28px; }
.power-bar { display: grid; grid-template-columns: 1fr 1.3fr 2fr 1.3fr 1fr; gap: 4px; }
.power-bar span { height: 8px; border-radius: 2px; background: var(--line); }
.power-bar span:nth-child(3) { background: var(--net); }
.power-labels { display: grid; grid-template-columns: 1fr 1.3fr 2fr 1.3fr 1fr; gap: 4px; font-size: 13px; color: var(--muted); margin-top: 8px; text-align: center; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.card h3 { margin: 0 0 8px; font-size: 20px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .tag { display: inline-block; font-size: 13px; color: var(--court); font-weight: 700; margin-bottom: 14px; }
.card.wide { grid-column: span 2; background: var(--turf); color: var(--turf-ink); border-color: transparent; }
.card.wide p { color: var(--turf-muted); }
.card.wide .tag { color: var(--net); }
@media (max-width: 860px) { .grid { grid-template-columns: 1fr; } .card.wide { grid-column: auto; } }

.score { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.score div { padding: 28px 16px 28px 0; }
.score strong { display: block; font-size: clamp(40px, 6vw, 64px); font-weight: 800; line-height: 1; color: var(--court); }
.score span { color: var(--muted); font-size: 15px; }
@media (max-width: 600px) { .score { grid-template-columns: 1fr; } .score div { border-bottom: 1px solid var(--line); } .score div:last-child { border: 0; } }

.faq details { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq details:first-of-type { border-top: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 600; font-size: 18px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--court); font-weight: 400; font-size: 24px; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--muted); margin: 12px 0 0; max-width: 46em; }

.closing { text-align: center; padding-bottom: 24px; }
.closing h2 { font-size: clamp(36px, 6vw, 64px); margin: 0 0 12px; font-weight: 800; }
.closing p { color: var(--muted); margin: 0 0 24px; }
.closing .badge { background: var(--turf); color: var(--turf-ink); }

/* Documents */
.document { max-width: 760px; padding: 32px 0 24px; }
.document h1 { font-size: clamp(32px, 5vw, 48px); margin: 16px 0 12px; }
.document h2 { font-size: 22px; margin: 40px 0 8px; }
.document p, .document li { color: var(--ink); }
.muted, .lede { color: var(--muted); }
.lede { font-size: 19px; }
.back-link { display: inline-block; font-size: 15px; text-decoration: none; }
.back-link::before { content: "← "; }
.mail { display: inline-block; margin: 8px 0 8px; font-size: clamp(20px, 3.2vw, 28px); font-weight: 700; word-break: break-all; }

.site-footer { margin-top: clamp(72px, 10vw, 120px); padding: 32px 0 40px; border-top: 1px solid var(--line); display: grid; grid-template-columns: auto 1fr; gap: 12px 24px; align-items: center; }
.site-footer div { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: flex-end; font-size: 15px; }
.site-footer div a { color: var(--muted); text-decoration: none; }
.site-footer div a:hover { color: var(--court); }
.site-footer small { color: var(--muted); font-size: 13px; }
.footer-note { text-align: right; }
@media (max-width: 640px) {
  .site-footer { grid-template-columns: 1fr; }
  .site-footer div { justify-content: flex-start; }
  .footer-note { text-align: left; }
}