sumi.work/styles.css

:root {
  color-scheme: light;
  --bg: #f5f8ff;
  --panel: #ffffff;
  --panel-soft: #f7faff;
  --text: #17233d;
  --muted: #63708a;
  --line: #e5ebf5;
  --blue: #246bfe;
  --blue-dark: #1554d1;
  --green: #19b982;
  --orange: #ff8a3d;
  --purple: #7864f6;
  --shadow: 0 22px 60px rgba(57, 83, 132, 0.13);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100svh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 82% 18%, rgba(36, 107, 254, 0.13), transparent 24rem),
    linear-gradient(180deg, #f7fbff 0%, var(--bg) 52%, #ffffff 100%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1180px, calc(100% - 40px));
  min-height: 72px;
  margin: 0 auto;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.site-header.is-scrolled {
  width: 100%;
  padding: 0 max(20px, calc((100% - 1180px) / 2));
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(229, 235, 245, 0.9);
  box-shadow: 0 10px 36px rgba(42, 67, 112, 0.08);
  backdrop-filter: blur(18px);
}

.brand,
.nav-links,
.hero-actions,
.status-row,
.record {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  color: #14233f;
  font-size: 1.04rem;
  font-weight: 850;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), #48a8ff);
  border-radius: 9px;
  box-shadow: 0 10px 24px rgba(36, 107, 254, 0.24);
}

.nav-links {
  gap: 30px;
  color: #3f4b62;
  font-size: 0.95rem;
  font-weight: 650;
}

.nav-links a {
  transition: color 160ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--blue);
}

.hero,
.services-section,
.record {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
  gap: clamp(34px, 6vw, 84px);
  align-items: center;
  min-height: calc(100svh - 72px);
  padding: 54px 0 74px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 620px;
  margin-bottom: 22px;
  font-size: clamp(2.8rem, 6vw, 5.55rem);
  line-height: 1.03;
  letter-spacing: 0;
}

.subtitle {
  max-width: 580px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(1.06rem, 1.6vw, 1.24rem);
  line-height: 1.8;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 14px 30px rgba(36, 107, 254, 0.24);
}

.button.primary:hover,
.button.primary:focus-visible {
  background: var(--blue-dark);
}

.button.secondary {
  color: var(--blue);
  background: #fff;
  border-color: #dbe6ff;
}

.status-row {
  width: fit-content;
  gap: 9px;
  padding: 10px 14px;
  color: #2f456b;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid #dce7f8;
  border-radius: 999px;
  box-shadow: 0 12px 32px rgba(57, 83, 132, 0.08);
}

.status-row strong {
  color: #143055;
  font-weight: 850;
}

.status-dot {
  width: 10px;
  height: 10px;
  background: var(--green);
  border-radius: 999px;
  box-shadow: 0 0 0 6px rgba(25, 185, 130, 0.13);
}

.hero-visual {
  position: relative;
  min-height: 460px;
  padding: 20px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.88), rgba(238, 245, 255, 0.72)),
    #fff;
  border: 1px solid rgba(222, 232, 248, 0.9);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.hero-visual::before {
  position: absolute;
  inset: auto 38px 32px auto;
  width: 190px;
  height: 190px;
  background: linear-gradient(135deg, rgba(36, 107, 254, 0.16), rgba(25, 185, 130, 0.12));
  border-radius: 999px;
  content: "";
}

.visual-topbar {
  display: flex;
  gap: 8px;
  padding: 10px 8px 18px;
}

.visual-topbar span {
  width: 10px;
  height: 10px;
  background: #d5dfef;
  border-radius: 999px;
}

.visual-screen {
  position: relative;
  min-height: 370px;
  padding: clamp(22px, 4vw, 34px);
  overflow: hidden;
  background:
    linear-gradient(140deg, #ffffff 0%, #edf5ff 100%);
  border: 1px solid #e0e9f7;
  border-radius: 22px;
}

.screen-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
  color: #4e607b;
  font-weight: 780;
}

.screen-heading strong {
  color: var(--green);
}

.screen-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  max-width: 360px;
}

.screen-grid span {
  min-height: 92px;
  background: #fff;
  border: 1px solid #e0e9f7;
  border-radius: 16px;
  box-shadow: 0 16px 34px rgba(57, 83, 132, 0.08);
}

.screen-grid span:nth-child(1) {
  border-top: 4px solid var(--blue);
}

.screen-grid span:nth-child(2) {
  border-top: 4px solid var(--green);
}

.screen-grid span:nth-child(3) {
  border-top: 4px solid var(--orange);
}

.screen-grid span:nth-child(4) {
  border-top: 4px solid var(--purple);
}

.screen-chart {
  position: absolute;
  right: 34px;
  bottom: 34px;
  display: flex;
  align-items: end;
  gap: 10px;
  height: 96px;
}

.screen-chart i {
  display: block;
  width: 18px;
  background: linear-gradient(180deg, #74a5ff, var(--blue));
  border-radius: 999px 999px 6px 6px;
}

.screen-chart i:nth-child(1) {
  height: 42px;
}

.screen-chart i:nth-child(2) {
  height: 72px;
}

.screen-chart i:nth-child(3) {
  height: 58px;
}

.screen-chart i:nth-child(4) {
  height: 92px;
}

.services-section {
  padding: 10px 0 86px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.9rem, 3vw, 3rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.services {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.service-card {
  position: relative;
  display: flex;
  min-height: 206px;
  flex-direction: column;
  padding: 24px;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 16px 34px rgba(57, 83, 132, 0.08);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.service-card::after {
  position: absolute;
  right: -34px;
  bottom: -34px;
  width: 112px;
  height: 112px;
  border-radius: 999px;
  opacity: 0.12;
  content: "";
}

.service-card:hover,
.service-card:focus-visible {
  transform: translateY(-6px);
  border-color: rgba(36, 107, 254, 0.28);
  box-shadow: 0 22px 52px rgba(57, 83, 132, 0.16);
  outline: none;
}

.service-icon {
  display: inline-flex;
  width: fit-content;
  min-width: 48px;
  min-height: 36px;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  margin-bottom: auto;
  border-radius: 10px;
  font-size: 0.82rem;
  font-weight: 900;
}

.service-title {
  margin-top: 42px;
  color: #14233f;
  font-size: 1.18rem;
  font-weight: 900;
}

.service-desc {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.55;
}

.accent-blue .service-icon,
.accent-blue::after {
  color: var(--blue);
  background: rgba(36, 107, 254, 0.1);
}

.accent-green .service-icon,
.accent-green::after {
  color: var(--green);
  background: rgba(25, 185, 130, 0.12);
}

.accent-orange .service-icon,
.accent-orange::after {
  color: var(--orange);
  background: rgba(255, 138, 61, 0.12);
}

.accent-purple .service-icon,
.accent-purple::after {
  color: var(--purple);
  background: rgba(120, 100, 246, 0.12);
}

.record {
  justify-content: center;
  gap: 16px;
  padding: 24px 0 34px;
  color: #7a8598;
  font-size: 0.88rem;
  border-top: 1px solid var(--line);
}

.record a {
  transition: color 160ms ease;
}

.record a:hover,
.record a:focus-visible {
  color: var(--blue);
}

@media (max-width: 960px) {
  .nav-links {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-visual {
    min-height: 390px;
  }

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

@media (max-width: 560px) {
  .site-header,
  .hero,
  .services-section,
  .record {
    width: min(100% - 28px, 1180px);
  }

  .site-header {
    min-height: 64px;
  }

  h1 {
    font-size: clamp(2.55rem, 13vw, 4rem);
  }

  .button {
    width: 100%;
  }

  .status-row {
    align-items: flex-start;
    flex-direction: column;
    border-radius: 14px;
  }

  .hero-visual {
    min-height: auto;
    padding: 14px;
    border-radius: 22px;
  }

  .visual-screen {
    min-height: 310px;
  }

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

  .screen-grid span {
    min-height: 54px;
  }

  .screen-chart {
    display: none;
  }

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

  .record {
    align-items: center;
    flex-direction: column;
    gap: 6px;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}