:root {
  --ink: #111217;
  --muted: #5e6675;
  --paper: #fbfbf7;
  --surface: #ffffff;
  --soft: #f0f2f5;
  --line: rgba(17, 18, 23, 0.12);
  --blue: #1677ff;
  --pink: #e83f8f;
  --orange: #ff9d2f;
  --green: #18a967;
  --shadow: rgba(18, 23, 35, 0.12);
  --max: 1120px;
  --radius: 18px;
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f6f7fb;
    --muted: #aeb5c2;
    --paper: #111217;
    --surface: #1c1e25;
    --soft: #252832;
    --line: rgba(255, 255, 255, 0.12);
    --shadow: rgba(0, 0, 0, 0.38);
  }
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--paper);
}

body {
  margin: 0;
  min-height: 100%;
  background: var(--paper);
  color: var(--ink);
}

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

img {
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.nav {
  width: min(var(--max), calc(100% - 32px));
  min-height: 66px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  box-shadow: 0 10px 24px var(--shadow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 17px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  font-weight: 760;
  box-shadow: 0 12px 30px rgba(18, 23, 35, 0.06);
}

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

.page {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  position: relative;
  min-height: calc(100svh - 96px);
  display: flex;
  align-items: center;
  padding: 58px 0 76px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0 -10vw 0 24vw;
  background-image: url("assets/saveany-icon.png");
  background-repeat: no-repeat;
  background-position: right center;
  background-size: min(70vw, 760px);
  opacity: 0.18;
  filter: saturate(1.08);
  pointer-events: none;
}

.hero-content {
  position: relative;
  max-width: 730px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 720;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--green) 16%, transparent);
}

h1 {
  margin: 0;
  font-size: clamp(58px, 11vw, 118px);
  line-height: 0.92;
  letter-spacing: 0;
  font-weight: 860;
}

.hero-copy {
  max-width: 640px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(19px, 2.4vw, 25px);
  line-height: 1.4;
}

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

.section {
  padding: 72px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 28px;
}

.kicker {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h2 {
  margin: 0;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1;
  letter-spacing: 0;
}

.section-text {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.5;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.feature-card {
  min-height: 210px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 16px 38px rgba(18, 23, 35, 0.06);
}

.mark {
  display: grid;
  place-items: center;
  width: 43px;
  height: 43px;
  margin-bottom: 18px;
  border-radius: 14px;
  color: white;
  font-size: 22px;
  font-weight: 900;
}

.blue {
  background: var(--blue);
}

.pink {
  background: var(--pink);
}

.orange {
  background: var(--orange);
}

.green {
  background: var(--green);
}

.feature-card h3 {
  margin: 0;
  font-size: 19px;
  letter-spacing: 0;
}

.feature-card p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.48;
  font-size: 15px;
}

.workflow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.step {
  padding: 22px;
  border-radius: var(--radius);
  background: var(--soft);
  border: 1px solid var(--line);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  font-weight: 830;
}

.step h3 {
  margin: 0;
  font-size: 20px;
}

.step p {
  color: var(--muted);
  line-height: 1.5;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.82fr);
  gap: 34px;
  align-items: start;
}

.check-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--muted);
  line-height: 1.45;
}

.check-list strong {
  color: var(--ink);
}

.check {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--green);
  color: white;
  font-size: 13px;
  font-weight: 900;
}

.panel {
  border-radius: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 24px;
  box-shadow: 0 18px 44px rgba(18, 23, 35, 0.06);
}

.panel h3 {
  margin: 0 0 10px;
  font-size: 24px;
}

.panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.form-row {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.text-field,
.text-area {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  padding: 13px 14px;
}

.text-area {
  min-height: 120px;
  resize: vertical;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 26px 0;
  color: var(--muted);
}

.footer-inner {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 14px;
}

.footer-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.article {
  max-width: 820px;
  padding: 58px 0 76px;
}

.article h1 {
  font-size: clamp(44px, 8vw, 84px);
}

.article h2 {
  margin-top: 38px;
  font-size: 28px;
}

.article p,
.article li {
  color: var(--muted);
  line-height: 1.6;
  font-size: 17px;
}

.article a {
  color: var(--blue);
  font-weight: 700;
}

@media (max-width: 880px) {
  .hero::before {
    inset: 8vh -36vw auto 14vw;
    height: 56vh;
    background-position: right top;
    background-size: min(118vw, 640px);
    opacity: 0.12;
  }

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

  .feature-card {
    min-height: 0;
  }
}

@media (max-width: 620px) {
  .nav {
    width: min(var(--max), calc(100% - 24px));
  }

  .nav-links {
    gap: 12px;
  }

  .nav-links .hide-small {
    display: none;
  }

  .page,
  .footer-inner {
    width: min(var(--max), calc(100% - 24px));
  }

  .hero {
    min-height: calc(100svh - 82px);
    padding: 42px 0 58px;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .section {
    padding: 54px 0;
  }
}