:root {
  color-scheme: dark;
  --bg: #080c12;
  --bg-soft: #0d131d;
  --panel: rgba(17, 24, 35, 0.88);
  --panel-solid: #111823;
  --panel-light: #172131;
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #f5f7fb;
  --muted: #9aa7b8;
  --muted-strong: #c1cad6;
  --accent: #ff8a3d;
  --accent-bright: #ffad66;
  --accent-soft: rgba(255, 138, 61, 0.13);
  --green: #62d9a5;
  --green-soft: rgba(98, 217, 165, 0.12);
  --yellow: #f2c96d;
  --red: #ff7373;
  --red-soft: rgba(255, 115, 115, 0.11);
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.38);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --page-width: 1180px;
  --font: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 20% -10%, rgba(255, 138, 61, 0.08), transparent 32rem),
    linear-gradient(180deg, #090d14 0%, #080c12 44%, #0a0f16 100%);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

button,
input,
select {
  font: inherit;
}

button,
a,
input,
select,
.file-drop,
summary {
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
}

a {
  color: inherit;
}

svg {
  display: block;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

code {
  font-family: var(--mono);
}

[hidden] {
  display: none !important;
}

::selection {
  background: rgba(255, 138, 61, 0.35);
  color: white;
}

.page-glow {
  position: fixed;
  z-index: -1;
  width: 34rem;
  height: 34rem;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: 0.12;
}

.page-glow-one {
  top: 18rem;
  right: -20rem;
  background: var(--accent);
}

.page-glow-two {
  top: 85rem;
  left: -22rem;
  background: #427cff;
}

.section-shell,
.site-header {
  width: min(calc(100% - 40px), var(--page-width));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 84px;
  border-bottom: 1px solid var(--line);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}

.language-switcher {
  flex: none;
}

.language-switcher select {
  width: 132px;
  min-height: 36px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  outline: none;
  background: rgba(5, 9, 14, 0.58);
  color: var(--muted-strong);
  cursor: pointer;
  font-size: 12px;
  font-weight: 650;
  transition: border-color 160ms ease, box-shadow 160ms ease, background 160ms ease, color 160ms ease;
}

.language-switcher select:hover {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.045);
  color: white;
}

.language-switcher select:focus {
  border-color: rgba(255, 138, 61, 0.62);
  box-shadow: 0 0 0 4px rgba(255, 138, 61, 0.09);
}

.language-switcher select option {
  background: white;
  color: #111823;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(255, 138, 61, 0.34);
  border-radius: 13px;
  background: linear-gradient(145deg, rgba(255, 138, 61, 0.18), rgba(255, 138, 61, 0.04));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.brand-mark svg {
  width: 25px;
  height: 25px;
  fill: none;
  stroke: var(--accent-bright);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.brand > span:last-child {
  display: grid;
  gap: 1px;
}

.brand strong {
  font-size: 15px;
  letter-spacing: 0.015em;
}

.brand small {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.service-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.service-status::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--yellow);
  box-shadow: 0 0 0 4px rgba(242, 201, 109, 0.08);
  content: "";
}

.service-status[data-kind="ready"] {
  color: var(--muted-strong);
}

.service-status[data-kind="ready"]::before {
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(98, 217, 165, 0.08);
}

.service-status[data-kind="warning"]::before {
  background: var(--yellow);
}

.ghost-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--muted-strong);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 160ms ease, color 160ms ease, background 160ms ease;
}

.ghost-link svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.ghost-link:hover {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.04);
  color: white;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(460px, 0.85fr);
  gap: clamp(48px, 7vw, 96px);
  align-items: center;
  min-height: calc(100vh - 84px);
  padding-block: 70px 86px;
}

.hero-copy {
  max-width: 640px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--accent-bright);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow > span {
  width: 26px;
  height: 1px;
  background: currentColor;
}

.hero h1,
.section-heading h2,
.flow-copy h2 {
  margin: 20px 0 0;
  font-size: clamp(46px, 6vw, 78px);
  font-weight: 710;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

.hero h1 em {
  color: var(--accent);
  font-style: normal;
  font-weight: inherit;
}

.hero-lead {
  max-width: 610px;
  margin: 30px 0 0;
  color: var(--muted-strong);
  font-size: 18px;
  line-height: 1.72;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 30px;
}

.hero-points > span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}

.hero-points i {
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(98, 217, 165, 0.08);
}

.point-text {
  min-width: 0;
}

.app-card,
.auth-card,
.manage-card {
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(22, 30, 43, 0.96), rgba(13, 19, 29, 0.98));
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.035);
}

.app-card {
  position: relative;
  overflow: hidden;
  padding: 26px;
  border-radius: var(--radius-xl);
}

.app-card::before {
  position: absolute;
  top: -130px;
  right: -100px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 138, 61, 0.13), transparent 68%);
  pointer-events: none;
  content: "";
}

.app-card-header,
.auth-meta {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.card-kicker {
  display: block;
  margin-bottom: 5px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.app-card h2,
.auth-meta h2 {
  margin: 0;
  font-size: 21px;
  letter-spacing: -0.025em;
}

.zero-knowledge-badge,
.access-kind {
  flex: none;
  padding: 6px 9px;
  border: 1px solid rgba(98, 217, 165, 0.2);
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--green);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.mode-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  margin: 24px 0 22px;
  padding: 4px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 13px;
  background: rgba(5, 9, 14, 0.5);
}

.mode-tab {
  min-height: 42px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 13px;
  font-weight: 650;
  transition: color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.mode-tab.is-active {
  background: rgba(255, 255, 255, 0.075);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 6px 20px rgba(0, 0, 0, 0.16);
  color: white;
}

.stack-form,
.compact-form {
  display: grid;
  gap: 15px;
}

.field-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 7px;
  color: var(--muted-strong);
  font-size: 12px;
  font-weight: 650;
}

.field-label span {
  color: var(--muted);
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  min-height: 49px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  outline: none;
  background: rgba(5, 9, 14, 0.58);
  color: var(--text);
  font-family: var(--mono);
  font-size: 14px;
  transition: border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

input::placeholder {
  color: #657183;
}

input:focus {
  border-color: rgba(255, 138, 61, 0.62);
  background: rgba(5, 9, 14, 0.78);
  box-shadow: 0 0 0 4px rgba(255, 138, 61, 0.09);
}

.input-with-action {
  position: relative;
}

.input-with-action input {
  padding-right: 86px;
}

.inline-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: 50%;
  right: 7px;
  transform: translateY(-50%);
  min-width: 70px;
  min-height: 35px;
  border: 0;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--muted-strong);
  cursor: pointer;
  font-size: 11px;
  font-weight: 650;
}

.inline-button:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

.field-help {
  margin: -6px 0 0;
  color: var(--muted);
  font-size: 10.5px;
  line-height: 1.55;
}

.field-help[data-kind="error"] {
  color: var(--red);
}

.field-help[data-kind="success"] {
  color: var(--green);
}

#alias-hint {
  margin-top: 6px;
}

.primary-button,
.secondary-button,
.copy-code-button,
.copy-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 700;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease, opacity 160ms ease;
}

.primary-button {
  gap: 10px;
  min-height: 50px;
  margin-top: 2px;
  border: 1px solid rgba(255, 173, 102, 0.25);
  background: linear-gradient(135deg, #ff7b2d, #ff994f);
  box-shadow: 0 14px 34px rgba(255, 123, 45, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.24);
  color: #160b04;
  font-size: 13px;
}

.primary-button svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
  transition: transform 160ms ease;
}

.primary-button:hover:not(:disabled) {
  transform: translateY(-1px);
  background: linear-gradient(135deg, #ff8a3d, #ffad66);
}

.primary-button:hover svg {
  transform: translateX(2px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

.form-status {
  margin: 0;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--muted-strong);
  font-size: 11px;
  line-height: 1.55;
}

.form-status[data-kind="error"] {
  border-color: rgba(255, 115, 115, 0.22);
  background: var(--red-soft);
  color: #ffaaaa;
}

.form-status[data-kind="success"] {
  border-color: rgba(98, 217, 165, 0.2);
  background: var(--green-soft);
  color: #9cebc9;
}

.file-drop {
  display: grid;
  min-height: 150px;
  place-items: center;
  padding: 20px;
  border: 1px dashed rgba(255, 255, 255, 0.18);
  border-radius: 14px;
  outline: none;
  background: rgba(5, 9, 14, 0.33);
  color: var(--muted);
  cursor: pointer;
  text-align: center;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.file-drop:hover,
.file-drop:focus-visible,
.file-drop.is-dragging {
  border-color: rgba(255, 138, 61, 0.65);
  background: rgba(255, 138, 61, 0.055);
}

.file-drop.is-dragging {
  transform: scale(1.01);
}

.file-drop.has-file {
  border-style: solid;
  border-color: rgba(98, 217, 165, 0.28);
  background: rgba(98, 217, 165, 0.045);
}

.file-drop strong {
  margin-top: 8px;
  color: var(--muted-strong);
  font-size: 13px;
}

.file-drop > span:not(.upload-icon) {
  margin-top: -8px;
  font-size: 10px;
}

.file-drop small {
  max-width: 100%;
  margin-top: -7px;
  overflow: hidden;
  color: var(--green);
  font-family: var(--mono);
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.upload-icon {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.04);
}

.upload-icon svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: var(--accent-bright);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.check-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding-left: 2px;
  cursor: pointer;
}

.check-row input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.custom-check {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: rgba(5, 9, 14, 0.5);
}

.check-row input:checked + .custom-check {
  border-color: var(--accent);
  background: var(--accent);
}

.check-row input:checked + .custom-check::after {
  position: absolute;
  top: 3px;
  left: 5px;
  width: 4px;
  height: 8px;
  border-right: 2px solid #1b0b02;
  border-bottom: 2px solid #1b0b02;
  transform: rotate(45deg);
  content: "";
}

.check-row input:focus-visible + .custom-check {
  box-shadow: 0 0 0 4px rgba(255, 138, 61, 0.1);
}

.check-row > span:last-child {
  display: grid;
  gap: 2px;
}

.check-row strong {
  color: var(--muted-strong);
  font-size: 11px;
}

.check-row small {
  color: var(--muted);
  font-size: 9.5px;
  line-height: 1.45;
}

.security-callout {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px;
  border: 1px solid rgba(98, 217, 165, 0.15);
  border-radius: 11px;
  background: rgba(98, 217, 165, 0.045);
}

.security-callout svg {
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 1px;
  fill: none;
  stroke: var(--green);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.security-callout p {
  margin: 0;
  color: var(--muted);
  font-size: 9.5px;
  line-height: 1.55;
}

.security-callout code {
  color: var(--muted-strong);
}

.import-result {
  display: grid;
  gap: 12px;
  margin-top: 20px;
  padding: 17px;
  border: 1px solid rgba(98, 217, 165, 0.2);
  border-radius: 15px;
  background: linear-gradient(145deg, rgba(98, 217, 165, 0.075), rgba(98, 217, 165, 0.025));
}

.result-heading {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 4px;
}

.success-mark {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 50%;
  background: var(--green);
  color: #07170f;
  font-size: 16px;
  font-weight: 900;
}

.result-heading > div {
  display: grid;
}

.result-heading strong {
  font-size: 12px;
}

.result-heading small {
  color: var(--muted);
  font-size: 9.5px;
}

.secret-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(4, 8, 13, 0.48);
}

.secret-row > div {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.secret-row span {
  color: var(--muted);
  font-size: 8.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.secret-row code {
  overflow: hidden;
  color: var(--text);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.copy-button {
  flex: none;
  min-height: 33px;
  padding: 0 10px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted-strong);
  font-size: 9.5px;
}

.copy-button:hover {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.09);
}

.result-warning {
  margin: 1px 0 0;
  color: var(--muted);
  font-size: 9px;
  line-height: 1.55;
}

.auth-section {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(300px, 0.8fr);
  gap: 20px;
  padding-block: 24px 110px;
  scroll-margin-top: 20px;
}

.auth-card,
.manage-card {
  border-radius: var(--radius-lg);
}

.auth-card {
  padding: clamp(24px, 4vw, 40px);
}

.access-kind[data-kind="alias"] {
  border-color: rgba(255, 138, 61, 0.23);
  background: var(--accent-soft);
  color: var(--accent-bright);
}

.code-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 42px;
  align-items: center;
  margin-top: 38px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    radial-gradient(circle at 15% 50%, rgba(255, 138, 61, 0.09), transparent 45%),
    rgba(5, 9, 14, 0.42);
}

.code-display > span {
  display: block;
  color: var(--muted);
  font-size: 10px;
  font-weight: 650;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.code-display > strong {
  display: block;
  margin-top: 4px;
  color: white;
  font-family: var(--mono);
  font-size: clamp(48px, 7vw, 74px);
  font-weight: 800;
  letter-spacing: 0.18em;
  line-height: 1.12;
  text-shadow: 0 8px 32px rgba(255, 138, 61, 0.12);
}

.copy-code-button {
  gap: 8px;
  min-height: 38px;
  margin-top: 14px;
  padding: 0 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.045);
  color: var(--muted-strong);
  font-size: 10px;
}

.copy-code-button svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.6;
}

.copy-code-button:hover {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.08);
  color: white;
}

.countdown {
  display: grid;
  justify-items: center;
  gap: 10px;
  min-width: 128px;
  padding-left: 30px;
  border-left: 1px solid var(--line);
}

.countdown-ring {
  width: 78px;
  height: 78px;
  transform: rotate(-90deg);
}

.ring-track,
.ring-value {
  fill: none;
  stroke-width: 3;
}

.ring-track {
  stroke: rgba(255, 255, 255, 0.08);
}

.ring-value {
  stroke: var(--accent);
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  stroke-linecap: round;
  transition: stroke-dashoffset 180ms linear;
}

.countdown > div {
  display: grid;
  justify-items: center;
}

.countdown span {
  color: var(--muted);
  font-size: 9px;
}

.countdown strong {
  color: var(--muted-strong);
  font-family: var(--mono);
  font-size: 13px;
}

.auth-note {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  margin-top: 16px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.55;
}

.auth-note svg {
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 1px;
  fill: none;
  stroke: var(--muted);
  stroke-linecap: round;
  stroke-width: 1.6;
}

.auth-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 23px;
}

.secondary-button {
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.045);
  color: var(--muted-strong);
  font-size: 11px;
}

.secondary-button:hover:not(:disabled) {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.08);
  color: white;
}

.full-width {
  width: 100%;
}

.manage-card {
  padding: 28px;
}

.manage-card h3 {
  margin: 5px 0 8px;
  font-size: 19px;
  letter-spacing: -0.025em;
}

.manage-card p {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.65;
}

.compact-form {
  gap: 10px;
}

.manage-card .form-status {
  margin-top: 12px;
}

.manage-links {
  display: grid;
  justify-items: start;
  gap: 9px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.text-button {
  padding: 0;
  border: 0;
  background: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 10px;
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.15);
  text-underline-offset: 3px;
}

.text-button:hover {
  color: white;
}

.text-button.danger {
  color: #df8a8a;
}

.text-button.danger:hover {
  color: var(--red);
}

.benefits,
.how-it-works,
.faq {
  padding-block: 110px;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 52px;
}

.section-heading h2,
.flow-copy h2 {
  font-size: clamp(40px, 5vw, 66px);
}

.section-heading.compact h2 {
  font-size: clamp(38px, 4vw, 54px);
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.benefit-card {
  position: relative;
  min-height: 310px;
  overflow: hidden;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(20, 28, 40, 0.78), rgba(11, 17, 25, 0.86));
  transition: border-color 180ms ease, transform 180ms ease, background 180ms ease;
}

.benefit-card:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  background: linear-gradient(160deg, rgba(24, 34, 48, 0.9), rgba(12, 18, 27, 0.95));
}

.benefit-card.featured {
  border-color: rgba(255, 138, 61, 0.22);
  background:
    radial-gradient(circle at 100% 0%, rgba(255, 138, 61, 0.13), transparent 55%),
    linear-gradient(160deg, rgba(25, 31, 42, 0.9), rgba(13, 18, 26, 0.95));
}

.benefit-number {
  position: absolute;
  top: 20px;
  right: 22px;
  color: rgba(255, 255, 255, 0.17);
  font-family: var(--mono);
  font-size: 11px;
}

.benefit-icon {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.035);
}

.benefit-icon svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: var(--accent-bright);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
}

.benefit-card h3 {
  margin: 64px 0 12px;
  font-size: 18px;
  letter-spacing: -0.025em;
}

.benefit-card p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.7;
}

.benefit-card p code {
  color: var(--muted-strong);
}

.benefit-card a {
  position: absolute;
  right: 24px;
  bottom: 22px;
  left: 24px;
  display: flex;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--muted-strong);
  font-size: 10px;
  font-weight: 650;
  text-decoration: none;
}

.benefit-card a:hover {
  color: var(--accent-bright);
}

.how-it-works {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(50px, 8vw, 110px);
  align-items: start;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.flow-copy {
  position: sticky;
  top: 50px;
}

.flow-copy p {
  max-width: 520px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.flow-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.flow-list li {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 18px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.flow-list li:first-child {
  padding-top: 6px;
}

.flow-list li:last-child {
  border-bottom: 0;
}

.flow-list li > span {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid rgba(255, 138, 61, 0.25);
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-bright);
  font-family: var(--mono);
  font-size: 12px;
}

.flow-list strong {
  display: block;
  margin-bottom: 5px;
  font-size: 15px;
}

.flow-list p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.7;
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  position: relative;
  padding: 25px 48px 25px 0;
  color: var(--muted-strong);
  cursor: pointer;
  font-size: 14px;
  font-weight: 650;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::before,
.faq-list summary::after {
  position: absolute;
  top: 50%;
  right: 7px;
  width: 14px;
  height: 1px;
  background: var(--muted);
  transform: translateY(-50%);
  transition: transform 180ms ease;
  content: "";
}

.faq-list summary::after {
  transform: translateY(-50%) rotate(90deg);
}

.faq-list details[open] summary::after {
  transform: translateY(-50%) rotate(0deg);
}

.faq-list details[open] summary {
  color: white;
}

.faq-list details p {
  max-width: 820px;
  margin: -4px 0 25px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.8;
}

.faq-list details code {
  color: var(--muted-strong);
}

.site-footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
  padding-block: 36px 42px;
  border-top: 1px solid var(--line);
}

.site-footer strong {
  font-size: 13px;
}

.site-footer p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 9.5px;
}

.footer-links {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-size: 10px;
}

.footer-links a {
  text-decoration-color: rgba(255, 255, 255, 0.18);
  text-underline-offset: 3px;
}

.footer-links a:hover {
  color: white;
}

.toast {
  position: fixed;
  z-index: 100;
  right: 22px;
  bottom: 22px;
  max-width: min(360px, calc(100vw - 44px));
  padding: 12px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: rgba(20, 28, 40, 0.96);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  color: var(--muted-strong);
  font-size: 11px;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

@media (max-width: 1060px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-block: 80px 110px;
  }

  .hero-copy {
    max-width: 780px;
  }

  .app-card {
    width: min(100%, 620px);
  }

  .auth-section {
    grid-template-columns: 1fr;
  }

  .benefit-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 760px) {
  .section-shell,
  .site-header {
    width: min(calc(100% - 28px), var(--page-width));
  }

  .site-header {
    min-height: 72px;
  }

  .header-left {
    gap: 10px;
  }

  .language-switcher select {
    width: 108px;
    min-height: 34px;
    font-size: 11px;
  }

  .service-status {
    display: none;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .ghost-link {
    padding: 8px 10px;
  }

  .hero {
    gap: 48px;
    padding-block: 58px 80px;
  }

  .hero h1,
  .section-heading h2,
  .flow-copy h2 {
    letter-spacing: -0.045em;
  }

  .hero-lead {
    font-size: 16px;
  }

  .app-card {
    padding: 20px;
    border-radius: 22px;
  }

  .app-card-header {
    align-items: center;
  }

  .zero-knowledge-badge {
    display: none;
  }

  .auth-section {
    padding-bottom: 80px;
  }

  .auth-card,
  .manage-card {
    padding: 22px;
  }

  .code-layout {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 24px;
  }

  .countdown {
    grid-template-columns: auto 1fr;
    justify-items: start;
    min-width: 0;
    padding-top: 20px;
    padding-left: 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .countdown-ring {
    width: 58px;
    height: 58px;
  }

  .countdown > div {
    align-self: center;
    justify-items: start;
  }

  .benefits,
  .how-it-works,
  .faq {
    padding-block: 80px;
  }

  .benefit-grid {
    grid-template-columns: 1fr;
  }

  .benefit-card {
    min-height: 270px;
  }

  .how-it-works {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .flow-copy {
    position: static;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .site-header {
    gap: 10px;
  }

  .language-switcher select {
    width: 82px;
    padding-inline: 8px;
  }

  .brand small {
    display: none;
  }

  .ghost-link svg {
    display: none;
  }

  .hero h1 {
    font-size: 44px;
  }

  .hero-points {
    display: grid;
  }

  .app-card h2 {
    font-size: 18px;
  }

  .mode-tab {
    font-size: 11px;
  }

  .secret-row {
    align-items: stretch;
    flex-direction: column;
  }

  .copy-button {
    width: 100%;
  }

  .auth-meta {
    align-items: flex-start;
    flex-direction: column;
  }

  .code-display > strong {
    font-size: 44px;
    letter-spacing: 0.13em;
  }

  .auth-actions .secondary-button {
    width: 100%;
  }

  .flow-list li {
    grid-template-columns: 40px 1fr;
    gap: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}