:root {
  --paper: #fffdf8;
  --linen: #f3efe6;
  --ink: #252525;
  --muted: #786f63;
  --green: #315f48;
  --green-deep: #203f31;
  --gold: #dfae56;
  --rust: #9a5b38;
  --line: rgba(37, 37, 37, 0.12);
  --shadow: 0 26px 80px rgba(32, 63, 49, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

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

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  height: 72px;
  padding: 0 clamp(20px, 4vw, 60px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--paper);
  transition: background 220ms ease, color 220ms ease, box-shadow 220ms ease;
}

.site-header[data-elevated="true"] {
  background: rgba(255, 253, 248, 0.92);
  color: var(--ink);
  box-shadow: 0 10px 36px rgba(37, 37, 37, 0.08);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: 22px;
  font-weight: 700;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--gold);
  color: var(--ink);
  font-family: Georgia, serif;
  font-size: 16px;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.2vw, 34px);
  font-size: 14px;
  font-weight: 600;
}

.nav a {
  opacity: 0.82;
}

.nav a:hover {
  opacity: 1;
}

.hero {
  position: relative;
  min-height: 88vh;
  overflow: hidden;
  padding: 142px clamp(22px, 6vw, 86px) 74px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(90deg, rgba(32, 63, 49, 0.95) 0%, rgba(32, 63, 49, 0.82) 42%, rgba(32, 63, 49, 0.34) 100%),
    radial-gradient(circle at 80% 22%, rgba(223, 174, 86, 0.55), transparent 30%),
    #203f31;
  isolation: isolate;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 92px;
  background: linear-gradient(0deg, var(--paper), transparent);
  z-index: -1;
}

.hero-visual {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.96;
}

.hero-shot {
  position: absolute;
  filter: drop-shadow(0 40px 70px rgba(0, 0, 0, 0.28));
  transform-origin: center;
}

.hero-shot-chat {
  width: min(28vw, 330px);
  min-width: 220px;
  right: min(52vw, 560px);
  top: 132px;
  transform: rotate(-6deg);
}

.hero-shot-memory {
  width: min(54vw, 710px);
  right: -70px;
  top: 122px;
  transform: rotate(3deg);
}

.hero-shot-admin {
  width: min(42vw, 560px);
  right: 120px;
  bottom: 46px;
  transform: rotate(-2deg);
}

.hero-copy {
  width: min(680px, 100%);
  color: var(--paper);
}

.eyebrow {
  margin: 0 0 18px;
  color: rgba(255, 253, 248, 0.74);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow.dark {
  color: var(--rust);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 24px;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: clamp(72px, 11vw, 156px);
  line-height: 0.86;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: clamp(38px, 5.3vw, 78px);
  line-height: 1.02;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: 28px;
}

.hero-text {
  max-width: 620px;
  margin-bottom: 34px;
  color: rgba(255, 253, 248, 0.86);
  font-size: clamp(18px, 2.1vw, 26px);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.primary-action,
.secondary-action {
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 800;
}

.primary-action {
  background: var(--gold);
  color: var(--ink);
}

.secondary-action {
  border: 1px solid rgba(255, 253, 248, 0.36);
  color: var(--paper);
}

.hero-status {
  position: absolute;
  left: clamp(22px, 6vw, 86px);
  right: clamp(22px, 6vw, 86px);
  bottom: 24px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.hero-status span {
  padding: 7px 12px;
  border: 1px solid rgba(255, 253, 248, 0.22);
  border-radius: 999px;
  color: rgba(255, 253, 248, 0.82);
  font-size: 12px;
  font-weight: 700;
}

.section {
  padding: clamp(70px, 10vw, 132px) clamp(20px, 5vw, 72px);
}

.section-head {
  max-width: 900px;
  margin-bottom: 44px;
}

.section-head p {
  max-width: 720px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.7;
}

.screen-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.84fr) minmax(300px, 1.16fr);
  gap: 24px;
  align-items: stretch;
}

.screen-card {
  margin: 0;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--linen);
  box-shadow: var(--shadow);
}

.screen-card.tall {
  grid-row: span 2;
}

.screen-card img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  object-position: top center;
  background: var(--linen);
}

.screen-card.tall img {
  height: 760px;
  object-fit: contain;
  padding: 20px;
}

figcaption {
  padding: 18px 20px 22px;
  background: var(--paper);
}

figcaption strong,
figcaption span {
  display: block;
}

figcaption strong {
  margin-bottom: 8px;
  font-size: 18px;
}

figcaption span {
  color: var(--muted);
  line-height: 1.55;
}

.feature-band {
  background: var(--green-deep);
  color: var(--paper);
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(320px, 1.2fr);
  gap: clamp(36px, 7vw, 92px);
}

.feature-intro {
  position: sticky;
  top: 96px;
  align-self: start;
}

.feature-list {
  display: grid;
  gap: 16px;
}

.feature-list article {
  border-top: 1px solid rgba(255, 253, 248, 0.18);
  padding: 28px 0 32px;
}

.feature-index {
  display: block;
  margin-bottom: 22px;
  color: var(--gold);
  font-family: Georgia, serif;
  font-size: 18px;
  font-weight: 700;
}

.feature-list p {
  margin-bottom: 0;
  color: rgba(255, 253, 248, 0.76);
  font-size: 19px;
  line-height: 1.72;
}

.workflow-section {
  background: var(--linen);
}

.section-head.compact {
  margin-bottom: 34px;
}

.workflow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line);
  background: var(--paper);
}

.workflow li {
  min-height: 260px;
  padding: 30px;
  border-right: 1px solid var(--line);
}

.workflow li:last-child {
  border-right: 0;
}

.workflow span {
  display: block;
  margin-bottom: 54px;
  color: var(--green);
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: 34px;
  font-weight: 700;
}

.workflow p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
}

.footer {
  padding: 34px clamp(20px, 5vw, 72px);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 920px) {
  .nav {
    display: none;
  }

  .hero {
    min-height: 820px;
    align-items: flex-start;
  }

  .hero-copy {
    padding-top: 20px;
  }

  .hero-shot-chat {
    width: 235px;
    right: auto;
    left: 24px;
    top: auto;
    bottom: 98px;
  }

  .hero-shot-memory {
    width: 540px;
    right: -190px;
    top: auto;
    bottom: 140px;
  }

  .hero-shot-admin {
    display: none;
  }

  .screen-grid,
  .feature-band,
  .workflow {
    grid-template-columns: 1fr;
  }

  .screen-card.tall {
    grid-row: auto;
  }

  .screen-card img,
  .screen-card.tall img {
    height: auto;
    max-height: none;
    object-fit: contain;
  }

  .feature-intro {
    position: static;
  }

  .workflow li {
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

@media (max-width: 560px) {
  .site-header {
    height: 62px;
  }

  .hero {
    min-height: 760px;
    padding-top: 112px;
  }

  h1 {
    font-size: clamp(56px, 18vw, 86px);
  }

  .hero-text {
    font-size: 17px;
  }

  .hero-shot-chat {
    width: 190px;
    left: 16px;
  }

  .hero-shot-memory {
    width: 440px;
    right: -210px;
  }

  .section {
    padding-left: 18px;
    padding-right: 18px;
  }

  .footer {
    flex-direction: column;
  }
}