:root {
  color-scheme: light;
  --paper: #f2f0e8;
  --paper-soft: #f8f6f0;
  --paper-strong: #fffdf8;
  --ink: #1b1f1a;
  --ink-soft: #3f473f;
  --muted: #687165;
  --line: rgba(27, 31, 26, 0.16);
  --line-soft: rgba(27, 31, 26, 0.08);
  --moss: #8fa18e;
  --moss-deep: #617062;
  --stone: #747970;
  --reed: #aa9476;
  --mist: #dfe5dc;
  --shadow: 0 28px 90px rgba(43, 49, 42, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(255, 253, 248, 0.52), rgba(223, 229, 220, 0.34) 42%, rgba(248, 246, 240, 0.82)),
    repeating-linear-gradient(90deg, rgba(27, 31, 26, 0.018) 0 1px, transparent 1px 18px),
    var(--paper);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(27, 31, 26, 0.08) 0.7px, transparent 0.7px);
  background-size: 6px 6px;
  opacity: 0.16;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.75rem;
  padding: 0.9rem max(1rem, calc((100vw - 1120px) / 2));
  color: var(--ink);
  background: rgba(248, 246, 240, 0.78);
  border-bottom: 1px solid var(--line-soft);
  backdrop-filter: blur(18px);
}

.site-header.solid {
  background: rgba(248, 246, 240, 0.9);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0;
}

.brand img {
  width: 2.2rem;
  height: 2.2rem;
  border: 1px solid rgba(27, 31, 26, 0.08);
  border-radius: 8px;
  box-shadow: 0 12px 32px rgba(44, 48, 42, 0.12);
}

nav {
  display: inline-flex;
  align-items: center;
  gap: 1.25rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

nav a {
  opacity: 0.82;
}

nav a:hover {
  opacity: 1;
}

.hero,
.intro-band,
.feature-grid,
.mood-band,
.privacy-band,
.closing-cta,
.policy-shell,
footer {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: calc(100svh - 4.75rem);
  padding: 5rem 0 5.5rem;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.eyebrow,
.section-kicker,
.feature-label {
  margin: 0 0 1rem;
  color: var(--moss-deep);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--ink);
  font-family: "Iowan Old Style", "Songti SC", "STSong", Georgia, serif;
  font-weight: 600;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  font-size: 5rem;
  line-height: 0.98;
  text-wrap: balance;
}

h2 {
  font-size: 3.25rem;
  line-height: 1.06;
  text-wrap: balance;
}

h3 {
  font-size: 1.45rem;
  line-height: 1.18;
}

p {
  margin: 0;
  color: var(--muted);
  line-height: 1.78;
}

.lead {
  max-width: 620px;
  margin-top: 1.45rem;
  color: var(--ink-soft);
  font-size: 1.16rem;
}

.signal-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.25rem;
  margin-top: 1.6rem;
  color: var(--stone);
  font-size: 0.95rem;
  font-weight: 700;
}

.signal-list span {
  position: relative;
  padding-left: 0.95rem;
}

.signal-list span::before {
  content: "";
  position: absolute;
  top: 0.62em;
  left: 0;
  width: 0.36rem;
  height: 0.36rem;
  border: 1px solid var(--moss-deep);
  transform: rotate(45deg);
}

.hero-actions,
.closing-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.hero-actions {
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 2.9rem;
  align-items: center;
  justify-content: center;
  padding: 0 1.12rem;
  border: 1px solid rgba(27, 31, 26, 0.18);
  border-radius: 8px;
  color: var(--ink);
  background: rgba(255, 253, 248, 0.5);
  font-weight: 700;
  letter-spacing: 0;
  transition: transform 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.button.primary {
  border-color: rgba(97, 112, 98, 0.36);
  background: #d7e0d3;
}

.button:hover {
  transform: translateY(-1px);
  border-color: rgba(27, 31, 26, 0.34);
}

.hero-mark {
  position: absolute;
  right: clamp(-3rem, 3vw, 2rem);
  top: 50%;
  width: min(520px, 45vw);
  margin: 0;
  opacity: 0.30;
  transform: translateY(-50%);
  pointer-events: none;
}

.hero-mark img {
  width: 100%;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.intro-band {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(0, 1fr);
  gap: 4rem;
  align-items: start;
  padding: 5.5rem 0;
}

.intro-band > p,
.privacy-band > p,
.mood-band > p {
  font-size: 1.06rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.feature-grid article {
  min-height: 245px;
  padding: 1.65rem 1.45rem 1.75rem;
  border-right: 1px solid var(--line-soft);
  background: rgba(255, 253, 248, 0.26);
}

.feature-grid article:last-child {
  border-right: 0;
}

.feature-grid p {
  margin-top: 0.95rem;
}

.mood-band {
  position: relative;
  padding: 5.5rem 0;
}

.mood-band::before {
  content: "";
  display: block;
  width: 8rem;
  height: 1px;
  margin-bottom: 2rem;
  background: linear-gradient(90deg, var(--stone), transparent);
}

.mood-band h2,
.mood-band p {
  max-width: 760px;
}

.mood-band p:last-child {
  margin-top: 1.2rem;
}

.privacy-band {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1fr);
  gap: 4rem;
  align-items: start;
  padding: 3.2rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.closing-cta {
  flex-direction: column;
  text-align: center;
  padding: 5.5rem 0;
}

.closing-cta p {
  max-width: 560px;
  margin-top: 1rem;
}

.closing-cta .button {
  margin-top: 0.35rem;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.55rem 0 2rem;
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: 0.9rem;
}

footer a {
  color: var(--ink-soft);
}

.policy-page {
  background:
    linear-gradient(180deg, rgba(248, 246, 240, 0.9), rgba(226, 231, 223, 0.42)),
    var(--paper);
}

.policy-shell {
  max-width: 780px;
  padding: 5rem 0 6rem;
}

.policy-shell h1 {
  font-size: 4.4rem;
  line-height: 1;
}

.updated {
  margin-top: 1rem;
  color: var(--ink-soft);
}

.policy-shell section {
  padding: 2rem 0;
  border-bottom: 1px solid var(--line);
}

.policy-shell h2 {
  margin-bottom: 0.82rem;
  font-size: 1.65rem;
}

.policy-shell a {
  color: var(--moss-deep);
  font-weight: 700;
}

@media (max-width: 960px) {
  .hero-mark {
    right: -7rem;
    width: min(420px, 70vw);
    opacity: 0.18;
  }

  .intro-band,
  .privacy-band {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-grid article:nth-child(2) {
    border-right: 0;
  }
}

@media (max-width: 640px) {
  .site-header {
    min-height: 4.25rem;
    padding: 0.75rem 1rem;
  }

  .brand img {
    width: 2rem;
    height: 2rem;
  }

  nav {
    gap: 0.85rem;
    font-size: 0.85rem;
  }

  .hero {
    min-height: auto;
    padding: 3rem 0 4.25rem;
  }

  .hero-mark {
    top: 2rem;
    right: -8rem;
    width: 24rem;
    opacity: 0.14;
    transform: none;
  }

  h1 {
    font-size: 3.1rem;
  }

  h2 {
    font-size: 2.25rem;
  }

  h3 {
    font-size: 1.32rem;
  }

  .lead {
    font-size: 1.02rem;
  }

  .signal-list {
    gap: 0.65rem 1rem;
  }

  .button {
    width: 100%;
  }

  .intro-band,
  .mood-band,
  .closing-cta {
    padding: 4.25rem 0;
  }

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

  .feature-grid article,
  .feature-grid article:nth-child(2) {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .feature-grid article:last-child {
    border-bottom: 0;
  }

  .privacy-band {
    padding: 2.6rem 0;
  }

  .policy-shell {
    padding: 3.5rem 0 4.5rem;
  }

  .policy-shell h1 {
    font-size: 3rem;
  }

  .policy-shell h2 {
    font-size: 1.38rem;
  }

  footer {
    flex-direction: column;
  }
}