/* ─── TOKENS ─────────────────────────────────────────────── */
:root {
  --black:    #0d0d0d;
  --gray-900: #1a1a1a;
  --gray-800: #2c2c2c;
  --gray-600: #5c5c5c;
  --gray-400: #9c9c9c;
  --gray-200: #e4e4e4;
  --gray-100: #f5f5f5;
  --white:    #ffffff;
  --accent:   #0d0d0d;

  --font-serif: 'Lora', Georgia, serif;
  --font-sans:  'Inter', system-ui, sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.12);

  --max-w: 1100px;
  --gap:   clamp(1rem, 4vw, 2rem);
}

/* ─── RESET ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--black);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, button { font-family: inherit; }

/* ─── UTILITIES ──────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1rem, 5vw, 2.5rem);
}

.section-eyebrow {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: .75rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--black);
}

.section-sub {
  margin-top: .75rem;
  font-size: 1rem;
  color: var(--gray-600);
  max-width: 56ch;
}

/* ─── BUTTONS ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .65rem 1.4rem;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
  transition: opacity .15s, transform .1s;
  white-space: nowrap;
}
.btn:hover  { opacity: .85; }
.btn:active { transform: scale(.98); }

.btn--primary {
  background: var(--black);
  color: var(--white);
}

.btn--sm   { padding: .45rem 1rem; font-size: .82rem; }
.btn--lg   { padding: .85rem 2rem; font-size: 1rem; }
.btn--full { width: 100%; }

/* ─── NAV ─────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: .3rem;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--black);
}

.nav__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: var(--black);
  color: var(--white);
  border-radius: 6px;
  font-size: .85rem;
  font-family: var(--font-sans);
  font-weight: 700;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 1.8rem;
}

.nav__links a {
  font-size: .875rem;
  color: var(--gray-600);
  transition: color .15s;
}
.nav__links a:hover { color: var(--black); }
.nav__links .btn { color: var(--white); }

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: .5rem;
}
.nav__burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--black);
  border-radius: 2px;
  transition: .25s;
}

@media (max-width: 680px) {
  .nav__links { display: none; }
  .nav__burger { display: flex; }
  .nav__links.nav__links--open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 1.5rem clamp(1rem,5vw,2.5rem);
    gap: 1.2rem;
  }
}

/* ─── HERO ────────────────────────────────────────────────── */
.hero {
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(2rem, 5vw, 4rem);
  text-align: center;
}

.hero__inner { display: flex; flex-direction: column; align-items: center; }

.hero__badge {
  display: inline-block;
  padding: .3rem .9rem;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 500;
  color: var(--gray-600);
  margin-bottom: 1.5rem;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5.5vw, 3.6rem);
  font-weight: 600;
  line-height: 1.15;
  color: var(--black);
  max-width: 18ch;
}

.hero__title em {
  font-style: italic;
  color: var(--gray-800);
}

.hero__sub {
  margin-top: 1.25rem;
  font-size: clamp(.95rem, 1.8vw, 1.1rem);
  color: var(--gray-600);
  max-width: 52ch;
  line-height: 1.65;
}

.hero__cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .6rem;
  margin-top: 2rem;
}

.hero__cta-note {
  font-size: .8rem;
  color: var(--gray-400);
}

.hero__trust {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .8rem;
  color: var(--gray-600);
}

/* ─── UPLOAD DEMO ─────────────────────────────────────────── */
.upload-demo {
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
}

.drop-zone {
  border: 2px dashed var(--gray-200);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 6vw, 4rem) 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  background: var(--gray-100);
  max-width: 600px;
  margin-inline: auto;
}

.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--black);
  background: var(--white);
}

.drop-zone__icon {
  display: flex;
  justify-content: center;
  margin-bottom: 1rem;
  color: var(--gray-400);
}

.drop-zone__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--black);
}

.drop-zone__sub {
  margin-top: .35rem;
  font-size: .875rem;
  color: var(--gray-600);
}

.drop-zone__link {
  color: var(--black);
  text-decoration: underline;
  cursor: pointer;
  font-weight: 500;
}

.drop-zone__limit {
  margin-top: .6rem;
  font-size: .75rem;
  color: var(--gray-400);
}

/* ─── TOOLS ───────────────────────────────────────────────── */
.tools {
  padding: clamp(3rem, 7vw, 5rem) 0;
  background: var(--gray-100);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

.tools > .container > .section-title { margin-bottom: .5rem; }

.tools__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.tool-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem 1.25rem 1.25rem 1.25rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  transition: box-shadow .2s, border-color .2s, transform .15s;
  position: relative;
}

.tool-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--gray-400);
  transform: translateY(-1px);
}

.tool-card--featured {
  grid-column: span 2;
  border-color: var(--black);
}

@media (max-width: 600px) {
  .tool-card--featured { grid-column: span 1; }
}

.tool-card__icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--gray-100);
  border-radius: var(--radius-sm);
  color: var(--black);
}

.tool-card--featured .tool-card__icon {
  background: var(--black);
  color: var(--white);
}

.tool-card__body { flex: 1; }

.tool-card__label {
  display: inline-block;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: .3rem;
}

.tool-card h3 {
  font-size: .95rem;
  font-weight: 600;
  margin-bottom: .25rem;
  color: var(--black);
}

.tool-card p {
  font-size: .83rem;
  color: var(--gray-600);
  line-height: 1.5;
}

.tool-card__arrow {
  align-self: center;
  font-size: 1rem;
  color: var(--gray-400);
  transition: transform .15s, color .15s;
}
.tool-card:hover .tool-card__arrow {
  transform: translateX(3px);
  color: var(--black);
}

/* ─── PRIVACY ─────────────────────────────────────────────── */
.privacy {
  padding: clamp(3.5rem, 8vw, 6rem) 0;
}

.privacy__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}

@media (max-width: 760px) {
  .privacy__inner { grid-template-columns: 1fr; }
}

.privacy__text .section-title { margin-bottom: 1rem; }

.privacy__text > p {
  font-size: .95rem;
  color: var(--gray-600);
  max-width: 50ch;
  margin-bottom: 1.5rem;
}

.privacy__steps {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.privacy__steps li {
  display: flex;
  gap: 1rem;
}

.privacy__step-num {
  flex-shrink: 0;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--gray-400);
  padding-top: .2rem;
  width: 2ch;
}

.privacy__steps strong {
  display: block;
  font-size: .9rem;
  font-weight: 600;
  margin-bottom: .2rem;
}

.privacy__steps p {
  font-size: .83rem;
  color: var(--gray-600);
}

/* hash card */
.hash-card {
  background: var(--gray-900);
  color: var(--white);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  font-family: var(--font-sans);
  box-shadow: var(--shadow-lg);
}

.hash-card__header {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .8rem;
  margin-bottom: 1.25rem;
  color: var(--gray-400);
}

.hash-card__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.hash-card__dot--green { background: #4ade80; box-shadow: 0 0 6px #4ade80; }

.hash-card__time { margin-left: auto; }

.hash-card__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: .55rem 0;
  border-bottom: 1px solid rgba(255,255,255,.07);
  font-size: .83rem;
  gap: 1rem;
}

.hash-card__row--hash { flex-direction: column; gap: .35rem; }

.hash-card__label {
  color: var(--gray-400);
  flex-shrink: 0;
}

.hash-card__value {
  color: var(--white);
  font-weight: 500;
  text-align: right;
  word-break: break-all;
}

.hash-card__hash {
  font-family: 'Courier New', monospace;
  font-size: .78rem;
  color: #a3e635;
  letter-spacing: .03em;
  word-break: break-all;
  background: rgba(163,230,53,.08);
  padding: .4rem .6rem;
  border-radius: var(--radius-sm);
}

.hash-card__footer {
  margin-top: 1rem;
}

.hash-card__verify {
  font-size: .78rem;
  color: var(--gray-400);
  text-decoration: underline;
  transition: color .15s;
}
.hash-card__verify:hover { color: var(--white); }

/* ─── PRICING ─────────────────────────────────────────────── */
.pricing {
  padding: clamp(3.5rem, 8vw, 6rem) 0;
  background: var(--gray-100);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

.pricing__inner { text-align: center; }
.pricing__inner .section-title { margin-bottom: .5rem; }

.pricing__cards {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.pricing-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 2rem;
  width: 100%;
  max-width: 320px;
  text-align: left;
  position: relative;
  transition: box-shadow .2s;
}

.pricing-card--featured {
  border-color: var(--black);
  box-shadow: var(--shadow-lg);
}

.pricing-card__badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--black);
  color: var(--white);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: .25rem .85rem;
  border-radius: 999px;
  white-space: nowrap;
}

.pricing-card__top { margin-bottom: 1.5rem; }

.pricing-card__name {
  display: block;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: .5rem;
}

.pricing-card__price {
  display: flex;
  align-items: baseline;
  gap: .3rem;
}

.pricing-card__amount {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 600;
  color: var(--black);
}

.pricing-card__period {
  font-size: .9rem;
  color: var(--gray-600);
}

.pricing-card__equiv {
  display: block;
  font-size: .78rem;
  color: var(--gray-400);
  margin-top: .2rem;
}

.pricing-card__features {
  display: flex;
  flex-direction: column;
  gap: .65rem;
  margin-bottom: 1.75rem;
}

.pricing-card__features li {
  display: flex;
  align-items: flex-start;
  gap: .55rem;
  font-size: .875rem;
  color: var(--gray-800);
}

.pricing-card__features li::before {
  content: '✓';
  font-weight: 700;
  font-size: .8rem;
  color: var(--black);
  flex-shrink: 0;
  margin-top: .05rem;
}

.pricing-card__note {
  text-align: center;
  font-size: .75rem;
  color: var(--gray-400);
  margin-top: .6rem;
}

.pricing__guarantee {
  margin-top: 1.75rem;
  font-size: .82rem;
  color: var(--gray-400);
}

/* ─── SIGNUP ──────────────────────────────────────────────── */
.signup {
  padding: clamp(3.5rem, 8vw, 6rem) 0;
}

.signup__inner {
  max-width: 480px;
  margin-inline: auto;
  text-align: center;
}

.signup__inner .section-title { margin-bottom: .5rem; }

.signup__form {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.signup__field {
  position: relative;
}

.signup__field input {
  width: 100%;
  padding: .9rem 1rem;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  color: var(--black);
  background: var(--white);
  transition: border-color .15s;
  outline: none;
}

.signup__field input:focus {
  border-color: var(--black);
}

.signup__field input::placeholder { color: var(--gray-400); }

.signup__field label {
  position: absolute;
  top: 50%;
  left: 1rem;
  transform: translateY(-50%);
  font-size: .85rem;
  color: var(--gray-400);
  pointer-events: none;
  transition: .15s;
  display: none;
}

.signup__plans {
  display: flex;
  gap: .75rem;
}

.plan-option {
  flex: 1;
  cursor: pointer;
}

.plan-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.plan-option__box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .2rem;
  padding: .85rem;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color .15s, background .15s;
}

.plan-option input:checked + .plan-option__box {
  border-color: var(--black);
  background: var(--gray-100);
}

.plan-option__box strong {
  font-size: .875rem;
  font-weight: 600;
  color: var(--black);
}

.plan-option__box em {
  font-style: normal;
  font-size: .8rem;
  color: var(--gray-600);
}

.plan-option__box small {
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--gray-400);
}

.signup__legal {
  font-size: .76rem;
  color: var(--gray-400);
  line-height: 1.5;
}

.signup__legal a {
  color: var(--gray-600);
  text-decoration: underline;
}

/* ─── FOOTER ──────────────────────────────────────────────── */
.footer {
  background: var(--black);
  color: var(--white);
  padding: clamp(2.5rem, 6vw, 4rem) 0 0;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

@media (max-width: 640px) {
  .footer__inner { grid-template-columns: 1fr; }
}

.footer__brand .nav__logo {
  color: var(--white);
  margin-bottom: .75rem;
}

.footer__brand .nav__logo-mark {
  background: var(--white);
  color: var(--black);
}

.footer__brand p {
  font-size: .82rem;
  color: rgba(255,255,255,.4);
}

.footer__brand a { color: rgba(255,255,255,.6); text-decoration: underline; }

.footer__links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

@media (max-width: 480px) {
  .footer__links { grid-template-columns: repeat(2, 1fr); }
}

.footer__col {
  display: flex;
  flex-direction: column;
  gap: .65rem;
}

.footer__col strong {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: rgba(255,255,255,.35);
  margin-bottom: .2rem;
}

.footer__col a {
  font-size: .84rem;
  color: rgba(255,255,255,.55);
  transition: color .15s;
}
.footer__col a:hover { color: var(--white); }

.footer__bottom {
  padding: 1.25rem 0;
}

.footer__bottom p {
  font-size: .78rem;
  color: rgba(255,255,255,.25);
}

/* ─── RESPONSIVE MISC ─────────────────────────────────────── */
@media (max-width: 480px) {
  .hero__trust { gap: 1rem; }
  .pricing__cards { flex-direction: column; align-items: center; }
}