:root {
  --ink: #071624;
  --muted: #5f6b78;
  --line: #dde3ea;
  --paper: #fbfaf7;
  --surface: #ffffff;
  --mint: #c9f7ce;
  --amber: #f2a23a;
  --teal: #0d6f72;
  --blue: #17456b;
  --rose: #a54f50;
  --shadow: 0 20px 60px rgba(7, 22, 36, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(251, 250, 247, 0.9);
  border-bottom: 1px solid rgba(221, 227, 234, 0.85);
  backdrop-filter: blur(18px);
}

.nav {
  width: min(1120px, calc(100% - 32px));
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: var(--mint);
  font-size: 15px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 15px;
  color: var(--muted);
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--ink);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  box-shadow: 0 10px 24px rgba(7, 22, 36, 0.18);
}

.button.secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  box-shadow: none;
}

.hero {
  width: min(1120px, calc(100% - 32px));
  min-height: auto;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 56px;
  align-items: center;
  padding: 72px 0 82px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--teal);
  font-size: 14px;
  font-weight: 800;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--teal);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.16;
  letter-spacing: 0;
}

h1 {
  max-width: 780px;
  margin-top: 18px;
  font-size: clamp(40px, 4vw, 56px);
  line-height: 1.12;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.line {
  display: block;
}

.line::after {
  content: "";
}

.lead {
  max-width: 690px;
  margin: 24px 0 0;
  color: #3d4a57;
  font-size: 20px;
  overflow-wrap: anywhere;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.proof-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 38px;
  max-width: 690px;
}

.proof {
  padding: 16px;
  border-top: 3px solid var(--amber);
  background: rgba(255, 255, 255, 0.72);
}

.proof strong {
  display: block;
  font-size: 18px;
}

.proof span {
  color: var(--muted);
  font-size: 14px;
}

.phone-stage {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone {
  width: min(300px, 68vw);
  border: 10px solid #121212;
  border-radius: 42px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
}

.phone img {
  display: block;
  width: 100%;
  height: auto;
}

.floating-note {
  position: absolute;
  right: 0;
  bottom: 76px;
  width: min(290px, 46vw);
  padding: 18px;
  background: var(--ink);
  color: #fff;
  box-shadow: var(--shadow);
}

.floating-note strong {
  display: block;
  color: var(--mint);
}

section {
  padding: 74px 0;
}

.section-inner {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.section-title {
  max-width: 760px;
  margin-bottom: 30px;
}

.section-title p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature {
  padding: 24px;
  min-height: 230px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.feature .num {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  margin-bottom: 18px;
  border-radius: 50%;
  background: var(--mint);
  font-weight: 900;
}

.feature:nth-child(2) .num,
.feature:nth-child(5) .num {
  background: #ffe2b4;
}

.feature:nth-child(3) .num,
.feature:nth-child(6) .num {
  background: #cde7f0;
}

.feature h3 {
  font-size: 22px;
}

.feature p {
  margin: 12px 0 0;
  color: var(--muted);
}

.band {
  background: #ffffff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.split {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 42px;
  align-items: center;
}

.screen-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.screen-shot {
  border-radius: 24px;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 16px 40px rgba(7, 22, 36, 0.08);
}

.screen-shot img {
  display: block;
  width: 100%;
}

.principles {
  display: grid;
  gap: 14px;
}

.principle {
  display: grid;
  grid-template-columns: 6px 1fr;
  gap: 16px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.principle::before {
  content: "";
  width: 6px;
  height: 100%;
  min-height: 44px;
  background: var(--teal);
}

.principle:nth-child(2)::before {
  background: var(--amber);
}

.principle:nth-child(3)::before {
  background: var(--rose);
}

.principle h3 {
  font-size: 20px;
}

.principle p {
  margin: 8px 0 0;
  color: var(--muted);
}

.legal-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.legal-link {
  min-height: 170px;
  padding: 24px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--surface);
  text-decoration: none;
}

.legal-link:hover {
  border-color: var(--teal);
}

.legal-link h3 {
  font-size: 22px;
}

.legal-link p {
  margin: 12px 0 0;
  color: var(--muted);
}

.site-footer {
  padding: 36px 0;
  color: #6d7780;
  background: #071624;
}

.footer-inner {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-inner a {
  color: #dfe8ef;
  text-decoration: none;
}

.page {
  width: min(900px, calc(100% - 32px));
  margin: 0 auto;
  padding: 64px 0 86px;
}

.page h1 {
  font-size: clamp(34px, 6vw, 58px);
}

.page-meta {
  margin: 14px 0 36px;
  color: var(--muted);
}

.doc {
  padding: 34px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.doc h2 {
  margin-top: 32px;
  font-size: 24px;
}

.doc h2:first-child {
  margin-top: 0;
}

.doc p,
.doc li {
  color: #384655;
}

.doc ul {
  padding-left: 22px;
}

.support-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.support-item {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

@media (max-width: 860px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero,
  .split,
  .feature-grid,
  .legal-links,
  .support-list {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 40px;
  }

  .proof-row {
    grid-template-columns: 1fr;
  }

  .phone-stage {
    min-height: auto;
    padding-bottom: 110px;
  }

  .floating-note {
    left: 50%;
    right: auto;
    bottom: 18px;
    width: min(320px, 88vw);
    transform: translateX(-50%);
  }

  .screen-strip {
    grid-template-columns: 1fr;
  }

  .doc {
    padding: 24px;
  }
}

@media (max-width: 520px) {
  h1 {
    max-width: 100%;
    font-size: 34px;
    line-break: anywhere;
    word-break: break-all;
  }

  .line {
    display: block;
  }

  .line::after {
    content: "";
  }

  .lead {
    max-width: 330px;
    font-size: 18px;
    word-break: break-all;
  }
}

/* Feedback admin */
.admin-body {
  background: #f5f7f8;
}

.admin-header {
  position: static;
}

.admin-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0 72px;
}

.admin-panel,
.admin-workspace {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.auth-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.72fr);
  gap: 34px;
  align-items: center;
  padding: 34px;
}

.admin-kicker {
  margin: 0 0 10px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
}

.admin-shell h1 {
  max-width: none;
  margin: 0;
  font-size: clamp(30px, 4vw, 46px);
}

.admin-muted,
.form-hint {
  margin: 12px 0 0;
  color: var(--muted);
}

.token-form label,
.admin-filters label {
  display: grid;
  gap: 8px;
  color: #273646;
  font-size: 14px;
  font-weight: 700;
}

.token-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

.token-row input,
.admin-filters input,
.admin-filters select {
  width: 100%;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

.token-row input:focus,
.admin-filters input:focus,
.admin-filters select:focus {
  outline: 2px solid rgba(13, 111, 114, 0.22);
  border-color: var(--teal);
}

.admin-workspace {
  padding: 26px;
}

.admin-toolbar {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  justify-content: space-between;
}

.toolbar-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.button.danger {
  background: #742c2c;
}

.admin-filters {
  display: grid;
  grid-template-columns: minmax(150px, 0.4fr) minmax(260px, 1fr) minmax(120px, 0.25fr);
  gap: 12px;
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.status-line {
  min-height: 28px;
  margin-top: 16px;
  color: var(--muted);
  font-size: 14px;
}

.status-line[data-kind="success"] {
  color: var(--teal);
}

.status-line[data-kind="error"] {
  color: #8d2d2d;
}

.feedback-list {
  display: grid;
  gap: 10px;
  margin-top: 8px;
}

.feedback-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
}

.feedback-head {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  padding: 16px;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.feedback-head:hover {
  background: #f8faf9;
}

.feedback-main {
  min-width: 0;
}

.feedback-title {
  display: block;
  font-weight: 800;
}

.feedback-meta {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.feedback-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: #eef4f1;
  color: #173e3f;
  font-size: 13px;
  font-weight: 800;
}

.rating-badge {
  background: #fff0d9;
  color: #66410e;
}

.feedback-detail {
  display: none;
  padding: 0 16px 16px;
}

.feedback-card.is-open .feedback-detail {
  display: block;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.detail-item {
  min-width: 0;
  padding: 12px;
  border-radius: 8px;
  background: #f8faf9;
}

.detail-wide {
  grid-column: 1 / -1;
}

.detail-item span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.detail-item pre {
  margin: 6px 0 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: #263645;
  font: 14px/1.55 ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
}

.empty-state {
  margin-top: 10px;
  padding: 34px;
  border: 1px dashed #cbd5dc;
  border-radius: 8px;
  text-align: center;
  background: #fbfcfc;
}

.empty-state h2 {
  font-size: 24px;
}

.empty-state p {
  color: var(--muted);
}

.is-hidden {
  display: none !important;
}

@media (max-width: 860px) {
  .auth-panel,
  .admin-filters,
  .feedback-head,
  .detail-grid,
  .token-row {
    grid-template-columns: 1fr;
  }

  .admin-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .toolbar-actions,
  .feedback-badges {
    justify-content: flex-start;
  }
}

/* User data admin additions */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 24px;
}

.metric-card {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8faf9;
}

.metric-card span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.metric-card strong {
  display: block;
  margin-top: 8px;
  color: var(--ink);
  font-size: 30px;
  line-height: 1;
}

.admin-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.admin-tab {
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--muted);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.admin-tab.is-active {
  border-color: var(--ink);
  background: var(--ink);
  color: #fff;
}

.user-list {
  display: grid;
  gap: 10px;
  margin-top: 8px;
}

.user-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
}

.user-head {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  padding: 16px;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.user-head:hover {
  background: #f8faf9;
}

.user-main {
  min-width: 0;
}

.user-title {
  display: block;
  font-weight: 900;
}

.user-meta {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.user-stats {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 11px;
  border-radius: 999px;
  background: #eef4f1;
  color: #173e3f;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
}

.user-detail {
  display: none;
  padding: 0 16px 16px;
}

.user-card.is-open .user-detail {
  display: block;
}

@media (max-width: 860px) {
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .user-head {
    grid-template-columns: 1fr;
  }

  .user-stats {
    justify-self: start;
  }
}

@media (max-width: 520px) {
  .metric-grid {
    grid-template-columns: 1fr;
  }
}

/* Sync vault admin additions */
.vault-list {
  display: grid;
  gap: 10px;
  margin-top: 8px;
}

@media (min-width: 980px) {
  .metric-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

/* Insight ledger admin additions */
.insight-list {
  display: grid;
  gap: 10px;
  margin-top: 8px;
}

/* Invite code admin additions */
.invite-panel {
  display: grid;
  gap: 14px;
}

.invite-create {
  display: grid;
  grid-template-columns: minmax(220px, 1.2fr) repeat(5, minmax(120px, 1fr)) auto;
  gap: 12px;
  align-items: end;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8faf9;
}

.invite-create h2 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.3;
}

.invite-create .admin-muted {
  margin-top: 6px;
  font-size: 0.86rem;
}

.invite-create label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.invite-create input {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 12px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

.invite-create input:focus {
  outline: 2px solid rgba(13, 111, 114, 0.22);
  border-color: var(--teal);
}

.invite-result {
  padding: 12px 14px;
  border: 1px solid rgba(13, 111, 114, 0.22);
  border-radius: 8px;
  background: rgba(13, 111, 114, 0.06);
  color: var(--ink);
  font-size: 0.9rem;
  overflow-wrap: anywhere;
}

.invite-list {
  display: grid;
  gap: 10px;
}

.invite-code-text {
  font-family: var(--mono, ui-monospace, SFMono-Regular, Menlo, Consolas, monospace);
  letter-spacing: 0.04em;
}

.invite-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.redemption-list {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.redemption-row {
  display: grid;
  grid-template-columns: minmax(120px, 0.3fr) 1fr;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.redemption-row strong {
  color: var(--ink);
  font-family: var(--mono, ui-monospace, SFMono-Regular, Menlo, Consolas, monospace);
  font-size: 0.88rem;
}

.redemption-row span {
  color: var(--muted);
  font-size: 0.88rem;
}

@media (max-width: 980px) {
  .invite-create {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .invite-create > div,
  .invite-create .button {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .invite-create,
  .redemption-row {
    grid-template-columns: 1fr;
  }
}