:root {
  --bg: #f3f8ff;
  --bg-soft: #eaf3ff;
  --surface: #ffffff;
  --surface-soft: #f8fbff;
  --ink: #102033;
  --muted: #5f6f85;
  --line: #d9e6f7;
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --primary-soft: #dbeafe;
  --sky: #38bdf8;
  --aqua: #22d3ee;
  --navy: #0f2742;
  --shadow: 0 24px 70px rgba(30, 64, 175, 0.14);
  --shadow-soft: 0 14px 34px rgba(16, 32, 51, 0.08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: Arial, Helvetica, sans-serif; line-height: 1.6; }
a { color: var(--primary-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
.site-header { background: rgba(255, 255, 255, 0.92); border-bottom: 1px solid var(--line); color: var(--ink); position: sticky; top: 0; z-index: 10; backdrop-filter: blur(14px); }
.nav { width: min(1160px, calc(100% - 32px)); margin: 0 auto; padding: 14px 0; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 16px; color: var(--ink); font-weight: 900; letter-spacing: .1px; }
.brand-text { display: grid; gap: 3px; font-size: 1.18rem; line-height: 1.08; }
.brand-text small { color: var(--muted); font-size: .78rem; font-weight: 850; letter-spacing: .045em; text-transform: uppercase; }
.brand-mark { width: 82px; height: 82px; border-radius: 0; background: transparent; display: grid; place-items: center; border: 0; box-shadow: none; overflow: visible; flex: 0 0 auto; }
.brand-mark img { width: 100%; height: 100%; object-fit: contain; display: block; border-radius: 0; }
.nav-links { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
.nav-links a { color: var(--navy); padding: 10px 14px; border-radius: 999px; font-weight: 800; font-size: .95rem; }
.nav-links a:hover { background: var(--primary-soft); color: var(--primary-dark); text-decoration: none; }
.hero { background: radial-gradient(circle at 78% 14%, rgba(56, 189, 248, .34), transparent 28%), radial-gradient(circle at 15% 10%, rgba(219, 234, 254, .9), transparent 30%), linear-gradient(180deg, #fbfdff 0%, #eaf3ff 100%); color: var(--ink); padding: 58px 0 54px; border-bottom: 1px solid var(--line); }
.hero-inner, .section, .footer-inner { width: min(1160px, calc(100% - 32px)); margin: 0 auto; }
.hero-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(340px, .82fr); gap: 34px; align-items: center; }
.hero-copy { max-width: 650px; }
.eyebrow { color: var(--primary); font-size: .78rem; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; margin: 0 0 13px; }
h1,h2,h3 { line-height: 1.08; margin: 0; }
h1 { max-width: 680px; font-size: clamp(2.45rem, 6.1vw, 4.2rem); letter-spacing: -.025em; }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); margin-bottom: 16px; letter-spacing: -.018em; }
h3 { font-size: 1.23rem; margin-bottom: 8px; }
.lead { max-width: 600px; margin: 16px 0 0; color: var(--muted); font-size: clamp(1.08rem, 2.2vw, 1.28rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 26px; }
.hero-actions.compact { margin-top: 24px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 13px 20px; border-radius: 999px; border: 1px solid transparent; font-weight: 900; text-decoration: none; box-shadow: 0 10px 24px rgba(37, 99, 235, .12); transition: transform .15s ease, background-color .15s ease, border-color .15s ease; }
.button:hover { text-decoration: none; transform: translateY(-1px); }
.button.primary { background: var(--primary); color: #fff; }
.button.primary:hover { background: var(--primary-dark); }
.button.secondary { background: #fff; color: var(--primary-dark); border-color: var(--line); }
.button.secondary:hover, .button.light:hover { border-color: #b9d2f4; background: var(--surface-soft); }
.button.light { background: #fff; color: var(--primary-dark); border-color: var(--line); box-shadow: none; }
.hero-panel { background: rgba(255,255,255,.9); border: 1px solid var(--line); border-radius: 32px; box-shadow: var(--shadow); padding: 34px; position: relative; overflow: hidden; }
.smartkeepers-panel { text-align: center; isolation: isolate; }
.smartkeepers-panel::before { content: ""; position: absolute; width: 210px; height: 210px; right: -72px; top: -70px; background: linear-gradient(135deg, rgba(219,234,254,.9), rgba(125,211,252,.32)); border-radius: 999px; z-index: -1; }
.smartkeepers-panel::after { content: ""; position: absolute; width: 160px; height: 160px; left: -64px; bottom: -70px; background: rgba(219, 234, 254, .62); border-radius: 999px; z-index: -1; }
.app-logo-wrap { display: grid; place-items: center; margin-bottom: 18px; }
.app-logo { width: 126px; height: 126px; border-radius: 32px; object-fit: contain; background: #fff; border: 1px solid var(--line); box-shadow: 0 20px 44px rgba(30,64,175,.16); display: block; }
.panel-kicker { color: var(--primary); font-size: .76rem; font-weight: 900; letter-spacing: .14em; text-transform: uppercase; margin: 0 0 8px; }
.hero-panel h2 { font-size: clamp(2.2rem, 4.6vw, 3.15rem); margin-bottom: 8px; letter-spacing: -.035em; }
.panel-slogan { color: var(--muted); font-size: 1.04rem; margin: 0 auto 22px; max-width: 360px; }
.product-points { display: grid; grid-template-columns: 1fr; gap: 10px; margin: 0; }
.product-points span { background: var(--surface-soft); border: 1px solid var(--line); border-radius: 16px; padding: 13px 15px; font-weight: 850; color: var(--navy); text-align: left; }
.release-note { margin-top: 18px; padding: 14px 16px; border-radius: 16px; background: var(--primary-soft); color: var(--primary-dark); font-weight: 900; }
.section { padding: 54px 0; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow-soft); padding: clamp(28px, 3.6vw, 42px); }
.about-card p:last-child { margin-bottom: 0; }
.about-card p,
.contact-card p {
  font-size: 1.05rem;
  line-height: 1.72;
}
.contact-card h3 { font-size: 1.32rem; }
.feature-grid { align-items: stretch; }
.image-feature { display: flex; flex-direction: column; height: 100%; }
.image-feature .feature-body { flex: 1; }
.contact-card { background: linear-gradient(180deg, #ffffff, #f8fbff); }
.contact-email { word-break: break-word; font-weight: 850; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.app-card { padding: clamp(24px, 4vw, 42px); }
.section-heading { max-width: 720px; margin-bottom: 26px; }
.feature { background: linear-gradient(180deg, #ffffff, #f8fbff); border: 1px solid var(--line); border-radius: 20px; padding: 24px; min-height: 210px; }
.image-feature { padding: 0; overflow: hidden; min-height: 0; background: #fff; }
.feature-media {
  height: 405px;
  padding: 28px 24px 22px;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 18% 16%, rgba(96, 165, 250, .22), transparent 28%),
    linear-gradient(180deg, #eef6ff, #f8fbff);
  border-bottom: 1px solid var(--line);
}
.feature-media img {
  width: auto;
  max-width: 94%;
  max-height: 350px;
  object-fit: contain;
  object-position: center;
  display: block;
  border-radius: 20px;
  box-shadow: 0 18px 34px rgba(16, 32, 51, .14);
  background: #fff;
}
.feature-zoom {
  width: 100%;
  height: 100%;
  border: 0;
  padding: 0;
  display: grid;
  place-items: center;
  background: transparent;
  cursor: zoom-in;
}
.feature-zoom:hover img,
.feature-zoom:focus-visible img {
  transform: translateY(-3px) scale(1.015);
  box-shadow: 0 24px 48px rgba(16, 32, 51, .2);
}
.feature-zoom img { transition: transform .18s ease, box-shadow .18s ease; }
.image-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.image-modal[aria-hidden="false"] { display: flex; }
.image-modal-backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  background: rgba(15, 39, 66, .72);
  backdrop-filter: blur(8px);
  cursor: zoom-out;
}
.image-modal-card {
  position: relative;
  width: min(92vw, 560px);
  max-height: 92vh;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 30px 90px rgba(16, 32, 51, .36);
  overflow: hidden;
}
.image-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-soft);
}
.image-modal-header h2 {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: 0;
}
.image-modal-close {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--navy);
  font-size: 1.25rem;
  font-weight: 900;
  cursor: pointer;
}
.image-modal-card img {
  width: 100%;
  height: 100%;
  max-height: calc(92vh - 76px);
  object-fit: contain;
  background: #eef6ff;
}
body.modal-open { overflow: hidden; }
.feature-body {
  padding: 26px 26px 30px;
  text-align: center;
  display: grid;
  justify-items: center;
}
.feature-icon { width: 46px; height: 46px; border-radius: 15px; background: var(--primary-soft); color: var(--primary-dark); display: grid; place-items: center; font-weight: 950; margin-bottom: 16px; border: 1px solid #c9ddfb; }
.muted { color: var(--muted); }
.split { display: grid; grid-template-columns: 1.18fr .82fr; gap: 24px; align-items: stretch; }
.info-list { display: grid; gap: 12px; margin: 22px 0 0; padding: 0; list-style: none; }
.info-list li { padding: 14px 16px; border-radius: 14px; background: var(--surface-soft); border: 1px solid var(--line); }
.bug-format { margin-top: 16px; color: var(--ink); font-weight: 800; }
.bug-format p { margin: 6px 0; }
.policy h2 { margin-top: 38px; }
.policy h3 { margin-top: 26px; }
.policy ul { padding-left: 22px; }
.notice {
  border: 1px solid var(--line);
  background: var(--surface-soft);
  padding: 18px 20px;
  border-radius: 14px;
}
.site-footer { background: var(--navy); color: #dceafe; padding: 38px 0; margin-top: 28px; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; align-items: center; }
.footer-links { display: flex; flex-wrap: wrap; gap: 10px; }
.footer-links a { color: #fff; font-weight: 800; padding: 8px 10px; border-radius: 999px; }
.footer-links a:hover { background: rgba(255,255,255,.1); text-decoration: none; }
.site-footer a { color: #fff; font-weight: 800; }
@media (max-width: 900px) {
  .hero-layout, .grid, .split { grid-template-columns: 1fr; }
  .hero-panel { max-width: 560px; }
}
@media (max-width: 640px) {
  .nav { align-items: flex-start; flex-direction: column; padding: 14px 0; }
  .brand-mark { width: 70px; height: 70px; }
  .nav-links { justify-content: flex-start; gap: 6px; }
  .nav-links a { padding: 8px 10px; font-size: .9rem; }
  .hero { padding: 40px 0 40px; }
  .hero-layout { gap: 24px; }
  .section { padding: 36px 0; }
  .card, .hero-panel { border-radius: 20px; }
  .button { width: 100%; }
  .footer-inner { align-items: flex-start; }
}