:root {
  --bg: #f7f5ef;
  --paper: #fffefa;
  --ink: #0b0b0f;
  --muted: #72716d;
  --line: rgba(11, 11, 15, 0.1);
  --blue: #1473e6;
  --soft-blue: #eaf2ff;
  --warm: #e9e0d2;
  --shadow: 0 24px 70px rgba(31, 28, 22, 0.13);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  overflow-x: clip;
  background: var(--bg);
  color: var(--ink);
}

body {
  font-size: 16px;
  line-height: 1.5;
}

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

button,
.button {
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
}

.hero {
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 460px);
  gap: clamp(40px, 7vw, 112px);
  align-items: center;
  padding: 28px clamp(22px, 6vw, 88px) 64px;
}

.nav {
  position: absolute;
  top: 24px;
  left: clamp(22px, 6vw, 88px);
  right: clamp(22px, 6vw, 88px);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand,
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 550;
}

.brand-mark {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: var(--ink);
  color: var(--paper);
  font-size: 16px;
}

.nav-link {
  color: var(--muted);
}

.hero-copy {
  max-width: 700px;
  padding-top: 56px;
}

.eyebrow,
.section-kicker,
.screen-label {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0;
}

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

h1 {
  margin-bottom: 26px;
  font-size: clamp(48px, 7vw, 96px);
  line-height: 0.96;
  letter-spacing: 0;
  font-weight: 680;
}

.lead {
  max-width: 610px;
  color: #383734;
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  padding: 13px 20px;
  font-size: 15px;
  font-weight: 600;
}

.button.primary {
  background: var(--ink);
  color: var(--paper);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid var(--line);
}

.hero-device {
  display: flex;
  justify-content: center;
}

.phone,
.screen,
.gallery-card {
  border: 1px solid rgba(255, 255, 255, 0.8);
  background: rgba(255, 254, 250, 0.88);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.phone {
  width: min(100%, 365px);
  border-radius: 34px;
  padding: 28px;
}

.phone-top,
.gallery-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 34px;
}

.pill,
.proof-badge {
  border-radius: 999px;
  background: var(--soft-blue);
  color: #0d5fc4;
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 650;
}

.phone h2 {
  margin-bottom: 8px;
  font-size: 31px;
  line-height: 1.12;
}

.muted {
  color: var(--muted);
}

.meter {
  height: 3px;
  margin: 26px 0 22px;
  border-radius: 3px;
  background: rgba(11, 11, 15, 0.1);
  overflow: hidden;
}

.meter span {
  display: block;
  width: 62%;
  height: 100%;
  background: var(--ink);
}

.check-row,
.upload-row,
.proof-row,
.gap,
.proof-list {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.check-row strong,
.upload-row b,
.proof-row b {
  color: var(--muted);
  font-size: 13px;
  font-weight: 520;
}

.note-card,
.mini-note {
  margin-top: 26px;
  padding: 18px;
  border-radius: 22px;
  background: rgba(247, 245, 239, 0.76);
}

.note-card small,
.mini-note span {
  color: var(--muted);
  font-size: 13px;
}

.note-card p,
.mini-note p {
  margin: 12px 0 18px;
}

.note-card button,
.screen button {
  width: 100%;
  padding: 12px 16px;
  background: var(--blue);
  color: #fff;
  font-weight: 620;
}

.section {
  padding: clamp(70px, 10vw, 130px) clamp(22px, 6vw, 88px);
}

.section.compact {
  padding-top: 42px;
}

.section h2 {
  max-width: 930px;
  margin-bottom: 34px;
  font-size: clamp(32px, 4.5vw, 58px);
  line-height: 1.08;
  font-weight: 660;
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: 26px;
  overflow: hidden;
  background: var(--line);
}

.flow-grid article {
  min-height: 245px;
  padding: 26px;
  background: rgba(255, 254, 250, 0.62);
}

.flow-grid span {
  color: var(--muted);
  font-size: 13px;
}

.flow-grid h3 {
  margin: 42px 0 12px;
  font-size: 22px;
}

.flow-grid p,
.proof-copy p {
  color: #46443f;
}

.section-head {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 44px;
  align-items: end;
}

.screens {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 42px;
}

.screen-card {
  display: flex;
  justify-content: center;
}

.screen {
  width: min(100%, 330px);
  min-height: 555px;
  border-radius: 32px;
  padding: 28px;
}

.screen h3 {
  margin-bottom: 28px;
  font-size: 31px;
  line-height: 1.12;
}

.composer,
.engine-status {
  margin: 24px 0 18px;
  padding: 15px 16px;
  border-radius: 18px;
  background: #f0eee8;
  color: var(--muted);
}

.gap,
.proof-list {
  justify-content: flex-start;
}

.gap::before,
.proof-list::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #d8c7aa;
}

.proofed {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(300px, 520px);
  gap: clamp(38px, 7vw, 94px);
  align-items: center;
}

.proof-copy h2 {
  margin-bottom: 22px;
}

.gallery-card {
  border-radius: 32px;
  padding: 28px;
}

.gallery-head h3 {
  margin: 8px 0 0;
  font-size: 28px;
}

.proof-image {
  position: relative;
  height: 330px;
  margin-bottom: 18px;
  overflow: hidden;
  border-radius: 24px;
  background:
    repeating-linear-gradient(
      -28deg,
      rgba(255, 255, 255, 0) 0 34px,
      rgba(255, 255, 255, 0.36) 34px 35px,
      rgba(255, 255, 255, 0) 35px 68px
    ),
    linear-gradient(135deg, rgba(18, 17, 15, 0.08), rgba(18, 17, 15, 0.38)),
    radial-gradient(circle at 70% 24%, #f5d7b0 0 8%, transparent 25%),
    linear-gradient(145deg, #c7b29d, #252322);
}

.proof-image::before {
  content: "PROOFED · PP-0183-W02 · 阿舟   PROOFED · PP-0183-W02 · 阿舟   PROOFED · PP-0183-W02 · 阿舟";
  position: absolute;
  inset: -80px;
  display: grid;
  place-items: center;
  color: rgba(255, 255, 255, 0.42);
  font-size: 21px;
  font-weight: 650;
  line-height: 3.2;
  transform: rotate(-28deg);
  white-space: pre-wrap;
  word-spacing: 18px;
}

.proof-image::after {
  content: "仅供核验 · 138****1234 · 2026.06.04   仅供核验 · 138****1234 · 2026.06.04";
  position: absolute;
  inset: auto -30px 28px;
  color: rgba(255, 255, 255, 0.56);
  font-size: 12px;
  text-align: center;
  transform: rotate(-28deg);
}

.seal {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  place-items: center;
  color: rgba(255, 255, 255, 0.58);
  font-size: 28px;
  font-weight: 680;
}

.corner-code {
  position: absolute;
  right: 14px;
  bottom: 12px;
  z-index: 2;
  border-radius: 999px;
  padding: 6px 9px;
  background: rgba(11, 11, 15, 0.38);
  color: #fff;
  font-size: 12px;
}

.fineprint,
.boundary {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.boundary {
  margin-top: 6px;
}

@media (max-width: 980px) {
  .hero,
  .proofed,
  .section-head {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    padding-top: 92px;
  }

  .flow-grid,
  .screens {
    grid-template-columns: 1fr;
  }

  .flow-grid article {
    min-height: 190px;
  }
}

@media (max-width: 520px) {
  .nav {
    top: 16px;
  }

  .nav-link {
    display: none;
  }

  .hero {
    padding-top: 20px;
  }

  h1 {
    font-size: 46px;
  }

  .lead {
    font-size: 17px;
  }

  .section h2 {
    font-size: 34px;
  }
}