:root {
  --ink: #12363c;
  --ink-soft: #4a6569;
  --teal: #0b4f5c;
  --teal-deep: #083e49;
  --teal-soft: #d9eef0;
  --cream: #fff8e7;
  --paper: #fbfaf6;
  --white: #ffffff;
  --mint: #b7e4c7;
  --mint-deep: #34785c;
  --coral: #ef876f;
  --line: #dbe6e3;
  --shadow: 0 24px 70px rgba(18, 54, 60, 0.12);
  --shadow-soft: 0 12px 32px rgba(18, 54, 60, 0.08);
  --radius-xl: 32px;
  --radius-lg: 22px;
  --radius-md: 14px;
  --container: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
.container { width: min(calc(100% - 48px), var(--container)); margin: 0 auto; }

.skip-link {
  position: absolute;
  top: 12px;
  left: 16px;
  z-index: 10;
  padding: 10px 14px;
  border-radius: 9px;
  background: var(--cream);
  color: var(--teal-deep);
  font-weight: 700;
  transform: translateY(-150%);
  transition: transform 180ms ease;
}
.skip-link:focus { transform: translateY(0); }

.site-header { background: var(--paper); border-bottom: 1px solid rgba(219, 230, 227, 0.72); }
.header-inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-size: 17px; letter-spacing: -0.03em; }
.brand img { width: 42px; height: 42px; border-radius: 12px; }
.brand strong { color: var(--teal); font-weight: 800; }
.header-note { color: var(--ink-soft); font-size: 13px; font-weight: 650; letter-spacing: 0.02em; }

.hero { padding: 78px 0 92px; background: var(--cream); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.88fr); align-items: center; gap: clamp(48px, 8vw, 112px); }
.hero-copy { max-width: 680px; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--teal); font-size: 12px; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
.eyebrow-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 0 5px rgba(239, 135, 111, 0.16); }
h1, h2, h3, h4, p { margin-top: 0; }
h1 { max-width: 700px; margin-bottom: 24px; color: var(--teal-deep); font-size: clamp(3.5rem, 7.4vw, 6.55rem); font-weight: 780; letter-spacing: -0.085em; line-height: 0.94; }
.hero-lead { max-width: 585px; margin-bottom: 34px; color: var(--ink-soft); font-size: clamp(17px, 1.8vw, 20px); line-height: 1.65; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 22px; }
.button { display: inline-flex; align-items: center; gap: 22px; min-height: 53px; padding: 0 20px 0 23px; border-radius: 999px; text-decoration: none; font-size: 15px; font-weight: 800; transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease; }
.button-primary { background: var(--teal); color: var(--white); box-shadow: 0 10px 22px rgba(11, 79, 92, 0.2); }
.button-primary:hover { background: var(--teal-deep); transform: translateY(-2px); box-shadow: 0 14px 30px rgba(11, 79, 92, 0.23); }
.button-primary span:last-child { font-size: 20px; font-weight: 500; }
.quiet-note { display: inline-flex; align-items: center; gap: 8px; color: var(--ink-soft); font-size: 13px; font-weight: 700; }
.quiet-check, .safe-icon { display: inline-grid; place-items: center; width: 23px; height: 23px; border-radius: 50%; background: var(--mint); color: var(--mint-deep); font-size: 13px; font-weight: 900; }

.hero-card { position: relative; min-height: 405px; padding: 27px; border-radius: var(--radius-xl); background: var(--teal); color: var(--cream); box-shadow: var(--shadow); overflow: hidden; }
.hero-card::before { content: ""; position: absolute; top: 44px; right: -70px; width: 210px; height: 210px; border: 1px solid rgba(255, 248, 231, 0.22); border-radius: 50%; }
.hero-card::after { content: ""; position: absolute; right: 35px; bottom: -88px; width: 180px; height: 180px; border-radius: 50%; background: var(--mint); opacity: 0.9; }
.hero-card-top, .hero-card-footer { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; }
.mini-label { color: rgba(255, 248, 231, 0.72); font-size: 11px; font-weight: 800; letter-spacing: 0.13em; text-transform: uppercase; }
.mini-icon { display: grid; place-items: center; width: 32px; height: 32px; border: 1px solid rgba(255, 248, 231, 0.28); border-radius: 50%; font-size: 17px; }
.hero-card-symbol { position: relative; z-index: 1; display: grid; place-items: center; min-height: 235px; }
.hero-card-symbol img { width: 150px; height: 150px; border: 20px solid rgba(255, 248, 231, 0.08); border-radius: 50%; }
.hero-card-quote { position: relative; z-index: 1; max-width: 220px; margin: 0 0 24px; font-size: 23px; font-weight: 700; letter-spacing: -0.04em; line-height: 1.15; }
.hero-card-footer { position: relative; z-index: 1; color: rgba(255, 248, 231, 0.68); font-size: 11px; font-weight: 750; letter-spacing: 0.08em; text-transform: uppercase; }
.footer-line { width: 62px; height: 1px; background: rgba(255, 248, 231, 0.42); }

.contribution-section { padding: 94px 0 112px; }
.contribution-grid { display: grid; grid-template-columns: minmax(220px, 0.66fr) minmax(0, 1.34fr); gap: clamp(40px, 8vw, 112px); align-items: start; }
.section-intro { padding-top: 10px; }
.section-number { margin-bottom: 21px; color: var(--coral); font-size: 13px; font-weight: 850; letter-spacing: 0.15em; }
.section-intro h2 { max-width: 315px; margin-bottom: 18px; color: var(--teal-deep); font-size: clamp(2.4rem, 4.3vw, 4.5rem); font-weight: 780; letter-spacing: -0.075em; line-height: 0.98; }
.section-intro p { max-width: 310px; margin-bottom: 26px; color: var(--ink-soft); font-size: 16px; line-height: 1.7; }
.safe-line { display: flex; align-items: center; gap: 10px; color: var(--mint-deep); font-size: 13px; font-weight: 760; }

.pix-panel { padding: clamp(24px, 4vw, 42px); border: 1px solid var(--line); border-radius: var(--radius-xl); background: var(--white); box-shadow: var(--shadow-soft); }
.pix-panel-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; margin-bottom: 26px; }
.panel-kicker, .key-label, .qr-label { margin-bottom: 6px; color: var(--mint-deep); font-size: 11px; font-weight: 850; letter-spacing: 0.12em; text-transform: uppercase; }
.pix-panel h3 { margin-bottom: 0; color: var(--teal-deep); font-size: clamp(1.65rem, 3vw, 2.25rem); letter-spacing: -0.055em; line-height: 1; }
.pix-tag { padding: 7px 10px; border-radius: 999px; background: var(--teal-soft); color: var(--teal); font-size: 11px; font-weight: 800; }
.pix-key-block { padding: 20px; border-radius: var(--radius-md); background: var(--cream); }
.key-label { color: var(--ink-soft); }
.key-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
code { color: var(--teal-deep); font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; font-size: clamp(17px, 2vw, 22px); font-weight: 750; letter-spacing: -0.04em; word-break: break-word; }
.copy-button { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 8px; min-height: 41px; padding: 0 14px; border: 1px solid rgba(11, 79, 92, 0.18); border-radius: 10px; background: var(--white); color: var(--teal); cursor: pointer; font-size: 12px; font-weight: 850; transition: background 180ms ease, color 180ms ease, transform 180ms ease; }
.copy-button:hover { background: var(--teal); color: var(--white); transform: translateY(-1px); }
.copy-button.is-copied { border-color: var(--mint); background: var(--mint); color: var(--mint-deep); }
.copy-icon { font-size: 18px; line-height: 1; }
.copy-status { min-height: 21px; margin: 8px 0 0; color: var(--mint-deep); font-size: 12px; font-weight: 750; }

.qr-layout { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: clamp(24px, 5vw, 46px); padding: 31px 0 34px; }
.qr-frame { display: grid; place-items: center; width: 206px; height: 206px; padding: 10px; border: 1px solid var(--line); border-radius: 16px; background: var(--cream); }
.qr-frame img { width: 100%; height: 100%; object-fit: contain; border-radius: 8px; }
.qr-copy h4 { margin-bottom: 8px; color: var(--teal-deep); font-size: 21px; letter-spacing: -0.04em; }
.qr-copy p { max-width: 300px; margin-bottom: 12px; color: var(--ink-soft); font-size: 14px; line-height: 1.65; }
.qr-fallback { display: block; max-width: 320px; color: var(--ink-soft); font-size: 12px; font-weight: 700; }

.notice { display: flex; align-items: flex-start; gap: 12px; padding: 16px; border: 1px solid rgba(239, 135, 111, 0.35); border-radius: var(--radius-md); background: #fff4ef; }
.notice-icon { display: grid; flex: 0 0 auto; place-items: center; width: 23px; height: 23px; border-radius: 50%; background: var(--coral); color: var(--white); font-size: 13px; font-weight: 850; }
.notice p { margin: 0; color: #77514a; font-size: 12px; line-height: 1.65; }
.notice strong { color: #643f38; }

.steps-section { padding: 84px 0 96px; background: var(--teal); color: var(--cream); }
.steps-inner { display: grid; grid-template-columns: 0.7fr 1.3fr; align-items: center; gap: clamp(38px, 10vw, 140px); }
.eyebrow-dark { color: var(--mint); }
.steps-section h2 { margin: 16px 0 0; font-size: clamp(2.5rem, 5vw, 4.8rem); font-weight: 780; letter-spacing: -0.08em; line-height: 0.94; }
.steps-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; padding: 0; margin: 0; list-style: none; }
.steps-list li { min-height: 180px; padding: 18px; border-top: 1px solid rgba(255, 248, 231, 0.35); }
.step-index { display: block; margin-bottom: 42px; color: var(--mint); font-size: 12px; font-weight: 850; letter-spacing: 0.1em; }
.steps-list strong { display: block; margin-bottom: 7px; color: var(--cream); font-size: 15px; }
.steps-list small { display: block; color: rgba(255, 248, 231, 0.7); font-size: 13px; line-height: 1.55; }

.site-footer { background: var(--teal-deep); color: rgba(255, 248, 231, 0.72); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 84px; }
.footer-brand { display: flex; align-items: center; gap: 10px; color: var(--cream); font-size: 14px; font-weight: 800; }
.footer-brand img { width: 30px; height: 30px; border-radius: 9px; }
.footer-inner p { margin: 0; font-size: 12px; }
.noscript-banner { position: fixed; right: 16px; bottom: 16px; left: 16px; z-index: 20; padding: 14px 16px; border-radius: 12px; background: var(--cream); color: var(--teal-deep); box-shadow: var(--shadow); font-size: 13px; }

:focus-visible { outline: 3px solid var(--coral); outline-offset: 4px; }

@media (max-width: 850px) {
  .hero { padding: 62px 0 74px; }
  .hero-grid, .contribution-grid, .steps-inner { grid-template-columns: 1fr; }
  .hero-grid { gap: 52px; }
  .hero-copy { max-width: 640px; }
  .hero-card { width: min(100%, 520px); min-height: 350px; }
  .hero-card-symbol { min-height: 195px; }
  .contribution-grid { gap: 36px; }
  .section-intro p, .section-intro h2 { max-width: 560px; }
  .steps-inner { gap: 44px; }
}

@media (max-width: 600px) {
  .container { width: min(calc(100% - 32px), var(--container)); }
  .header-inner { min-height: 68px; }
  .header-note { display: none; }
  .hero { padding: 50px 0 58px; }
  h1 { font-size: clamp(3.25rem, 16vw, 5.1rem); }
  .hero-lead { font-size: 17px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 17px; }
  .hero-card { min-height: 340px; padding: 22px; }
  .hero-card-symbol { min-height: 184px; }
  .hero-card-symbol img { width: 126px; height: 126px; border-width: 16px; }
  .contribution-section { padding: 66px 0 78px; }
  .pix-panel { padding: 20px; border-radius: 24px; }
  .key-row { align-items: flex-start; flex-direction: column; }
  .copy-button { width: 100%; justify-content: center; }
  .qr-layout { grid-template-columns: 1fr; gap: 24px; }
  .qr-frame { width: min(100%, 248px); height: auto; aspect-ratio: 1; }
  .steps-section { padding: 66px 0 72px; }
  .steps-list { grid-template-columns: 1fr; gap: 0; }
  .steps-list li { display: grid; grid-template-columns: 34px 1fr; gap: 14px; min-height: auto; padding: 18px 0; }
  .step-index { margin: 2px 0 0; }
  .footer-inner { align-items: flex-start; flex-direction: column; justify-content: center; gap: 10px; min-height: 104px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}