:root {
  --color-bg: #f5f8fb;
  --color-surface: #ffffff;
  --color-primary: #123c5d;
  --color-primary-soft: #1f76b7;
  --color-teal: #2bb2b1;
  --color-accent-light: #d8ecff;
  --color-border: #dde4ee;
  --color-text-main: #152030;
  --color-text-muted: #5f6c80;
  --radius-lg: 18px;
  --radius-xl: 26px;
  --shadow-soft: 0 14px 40px rgba(9, 30, 66, 0.12);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--color-text-main);
  background: var(--color-bg);
}

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

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

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(245, 248, 251, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(221, 228, 238, 0.7);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  position: relative;
}

.logo-chevron {
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 4px;
  transform: rotate(45deg);
}

.chevron-left {
  background: var(--color-primary);
  left: 3px;
  top: 7px;
}

.chevron-right {
  background: var(--color-teal);
  right: 3px;
  bottom: 7px;
}

.logo-text {
  font-weight: 700;
  letter-spacing: 0.02em;
  font-size: 1.1rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.main-nav a {
  position: relative;
  padding-bottom: 0.15rem;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--color-teal);
  border-radius: 999px;
  transition: width 0.18s ease-out;
}

.main-nav a:hover::after {
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.4rem;
  border-radius: 999px;
  border: none;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--color-teal);
  color: #ffffff;
  box-shadow: 0 10px 24px rgba(43, 178, 177, 0.45);
  transition: transform 0.12s ease-out, box-shadow 0.12s ease-out, background 0.12s ease-out;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 32px rgba(43, 178, 177, 0.5);
  background: #23a19f;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid rgba(18, 60, 93, 0.25);
  box-shadow: none;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.8);
}

.btn-ghost {
  background: rgba(18, 60, 93, 0.04);
  color: var(--color-primary);
  box-shadow: none;
}

.btn-ghost:hover {
  background: rgba(18, 60, 93, 0.08);
}

.btn.block {
  width: 100%;
}

.hero {
  padding: 3.6rem 0 3.2rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.1fr);
  gap: 3rem;
  align-items: center;
}

.hero-copy h1 {
  font-size: 2.6rem;
  line-height: 1.15;
  margin: 0 0 1rem;
}

.hero-subtitle {
  margin: 0 0 1.6rem;
  color: var(--color-text-muted);
  font-size: 1rem;
  max-width: 30rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-art {
  position: relative;
  min-height: 260px;
  border-radius: var(--radius-xl);
  padding: 1.2rem;
}

.hero-card {
  position: absolute;
  border-radius: 22px;
  box-shadow: var(--shadow-soft);
}

.hero-card-main {
  right: 0.3rem;
  top: 0.7rem;
  width: 70%;
  height: 70%;
  background: linear-gradient(145deg, #1f76b7, #2bb2b1);
}

.hero-card-secondary {
  left: 0;
  bottom: 0.1rem;
  width: 52%;
  height: 50%;
  background: #f0f6ff;
}

.hero-node {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 999px;
  background: #ffffff;
  border: 2px solid var(--color-primary-soft);
}

.node-1 { top: 1.4rem; left: 1.6rem; }
.node-2 { bottom: 1.2rem; right: 1.5rem; }
.node-3 { top: 50%; left: 52%; transform: translate(-50%, -50%); }
.node-4 { bottom: 1rem; left: 38%; }

.section {
  padding: 3.4rem 0;
}

.section-alt {
  background: #f0f4fa;
}

.section h2 {
  font-size: 1.8rem;
  margin-bottom: 0.4rem;
}

.section-intro {
  margin: 0 0 2rem;
  font-size: 0.98rem;
  color: var(--color-text-muted);
  max-width: 34rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
}

.feature-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: 0 12px 28px rgba(15, 38, 71, 0.06);
}

.feature-card h3 {
  margin: 0.6rem 0 0.4rem;
  font-size: 1.05rem;
}

.feature-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

.feature-icon {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: var(--color-accent-light);
}

.upload-icon { background: linear-gradient(135deg, #1f76b7, #5ab0ff); }
.gear-icon { background: linear-gradient(135deg, #2bb2b1, #7be0d9); }
.checklist-icon { background: linear-gradient(135deg, #123c5d, #1f76b7); }

.feature-list {
  display: grid;
  gap: 1.25rem;
}

.feature-row h3 {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
}

.feature-row p {
  margin: 0;
  font-size: 0.94rem;
  color: var(--color-text-muted);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
}

.pricing-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 1.6rem 1.4rem;
  box-shadow: 0 14px 32px rgba(12, 28, 58, 0.06);
  border: 1px solid rgba(221, 228, 238, 0.8);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.pricing-card h3 {
  margin: 0;
}

.pricing-card ul {
  list-style: none;
  padding: 0;
  margin: 0.3rem 0 0.9rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.pricing-card li + li {
  margin-top: 0.3rem;
}

.price {
  font-size: 1.6rem;
  font-weight: 700;
}

.price span {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.pricing-card-featured {
  border-color: rgba(43, 178, 177, 0.8);
  box-shadow: 0 18px 40px rgba(43, 178, 177, 0.25);
  transform: translateY(-4px);
}

.about-layout {
  display: grid;
  gap: 1.2rem;
  font-size: 0.96rem;
  color: var(--color-text-muted);
}

.signin,
.contact {
  max-width: 640px;
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 1.6rem 1.4rem;
  box-shadow: var(--shadow-soft);
}

.simple-form {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

label {
  font-size: 0.88rem;
  font-weight: 500;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

input,
textarea {
  font: inherit;
  padding: 0.55rem 0.7rem;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  background: #f9fbff;
  outline: none;
  transition: border-color 0.12s ease-out, box-shadow 0.12s ease-out, background 0.12s ease-out;
}

input:focus,
textarea:focus {
  border-color: var(--color-primary-soft);
  box-shadow: 0 0 0 1px rgba(31, 118, 183, 0.3);
  background: #ffffff;
}

textarea {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form-note {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin: 0.2rem 0 0;
}

.site-footer {
  border-top: 1px solid rgba(221, 228, 238, 0.8);
  padding: 1.1rem 0 1.4rem;
  background: #f5f8fb;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  gap: 1rem;
}

.footer-links a {
  text-decoration: underline;
  text-decoration-style: dotted;
}

@media (max-width: 880px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 2.2rem;
  }
  .hero-art {
    order: -1;
  }
  .feature-grid,
  .pricing-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .header-inner {
    gap: 0.8rem;
  }
  .main-nav {
    display: none;
  }
}

@media (max-width: 640px) {
  .hero {
    padding-top: 2.4rem;
  }
  .hero-copy h1 {
    font-size: 2.1rem;
  }
  .section {
    padding: 2.6rem 0;
  }
  .form-row {
    grid-template-columns: minmax(0, 1fr);
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}