:root {
  --bg: #dff3ff;
  --bg-soft: #ecfbff;
  --cyan: #17bfe3;
  --cyan-deep: #0da9ca;
  --cyan-soft: #ddf8fd;
  --green: #6f8f8a;
  --green-soft: #dff1eb;
  --ink: #143038;
  --muted: #7d9293;
  --card: rgba(255, 255, 255, 0.72);
  --card-solid: #ffffff;
  --cream: #fff4bf;
  --shadow: 0 18px 42px rgba(89, 143, 162, 0.14);
  --shadow-soft: 0 10px 24px rgba(80, 130, 150, 0.10);
  --shadow-phone: 0 30px 70px rgba(71, 123, 142, 0.30);
  --radius-xl: 42px;
  --radius-lg: 30px;
  --radius-md: 22px;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Zen Maru Gothic", "M PLUS Rounded 1c", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  background:
    radial-gradient(circle at 18% 12%, rgba(255, 255, 255, 0.8), transparent 34%),
    radial-gradient(circle at 84% 18%, rgba(214, 255, 247, 0.8), transparent 30%),
    linear-gradient(180deg, #dff3ff 0%, #eaf8ff 46%, #dff3ff 100%);
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  z-index: -1;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  filter: blur(22px);
  opacity: 0.55;
  pointer-events: none;
}

body::before {
  left: -120px;
  top: 220px;
  background: rgba(255, 255, 255, 0.85);
}

body::after {
  right: -120px;
  bottom: 120px;
  background: rgba(183, 250, 255, 0.72);
}

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

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

.page {
  min-height: 100vh;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 22px clamp(18px, 4vw, 48px);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: rgba(223, 243, 255, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.45);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  letter-spacing: 0.03em;
  color: var(--ink);
  font-size: clamp(20px, 2.4vw, 30px);
}

.brand-icon {
  width: 54px;
  height: 54px;
  border-radius: 24px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.58);
  box-shadow: inset 0 0 0 8px rgba(255, 255, 255, 0.24), var(--shadow-soft);
  color: var(--green);
  font-size: 28px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav a {
  color: var(--green);
  font-weight: 800;
  padding: 10px 14px;
  font-size: 15px;
  border-radius: 999px;
  transition: 0.2s ease;
}

.nav a:hover {
  background: rgba(255, 255, 255, 0.46);
  color: var(--ink);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, var(--cyan), var(--cyan-deep));
  box-shadow: 0 12px 28px rgba(16, 196, 232, 0.28);
  font-weight: 900;
}

.section {
  padding: clamp(56px, 7vw, 96px) clamp(20px, 4vw, 48px);
}

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.hero {
  padding-top: clamp(48px, 7vw, 84px);
}

.section-hero {
  background:
    radial-gradient(circle at 72% 28%, rgba(255, 255, 255, 0.66), transparent 38%),
    linear-gradient(180deg, rgba(233, 248, 255, 0.48), rgba(223, 243, 255, 0.22));
}

.section-concept {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(250, 253, 255, 0.84));
}

.section-features {
  background: linear-gradient(180deg, rgba(223, 243, 255, 0.24), rgba(238, 249, 255, 0.5));
}

.section-keywords {
  padding-top: clamp(42px, 6vw, 68px);
  padding-bottom: clamp(44px, 6vw, 74px);
}

.section-screens {
  background: linear-gradient(180deg, rgba(247, 253, 255, 0.68), rgba(232, 249, 245, 0.4));
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.78fr);
  align-items: center;
  gap: clamp(38px, 6vw, 78px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.58);
  color: var(--green);
  font-weight: 900;
  box-shadow: var(--shadow-soft);
  margin-bottom: 24px;
}

.eyebrow span {
  color: var(--cyan);
}

.hero h1 {
  margin: 0;
  font-family: "M PLUS Rounded 1c", "Zen Maru Gothic", sans-serif;
  font-size: clamp(42px, 7vw, 78px);
  line-height: 1.12;
  letter-spacing: 0.02em;
  font-weight: 700;
}

.hero h1 .accent {
  color: var(--cyan);
}

.no-wrap {
  white-space: nowrap;
}

.hero-copy {
  margin: 28px 0 0;
  color: var(--green);
  max-width: 690px;
  font-size: clamp(17px, 1.9vw, 21px);
  line-height: 1.95;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  padding: 0 28px;
  border-radius: 999px;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--cyan), var(--cyan-deep));
  box-shadow: 0 18px 36px rgba(16, 196, 232, 0.3);
}

.button-secondary {
  color: var(--green);
  background: rgba(255, 255, 255, 0.48);
  box-shadow: none;
  border: 1px solid rgba(111, 143, 138, 0.16);
}

.phone-wrap {
  position: relative;
  min-height: 760px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-wrap::before {
  content: "";
  position: absolute;
  width: 610px;
  height: 610px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.8), rgba(183, 250, 255, 0.24) 52%, transparent 72%);
  filter: blur(2px);
  z-index: 0;
}

.phone-shot-card {
  position: relative;
  z-index: 1;
  width: min(422px, 90vw);
  margin: 0;
  border-radius: 38px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.82);
  box-shadow: 0 26px 60px rgba(71, 123, 142, 0.24);
}

.phone-shot-card img {
  width: 100%;
  height: auto;
  display: block;
}

.hero-chip {
  position: absolute;
  z-index: 2;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--green);
  font-weight: 900;
  font-size: 14px;
  letter-spacing: 0.02em;
  box-shadow: 0 12px 28px rgba(94, 146, 163, 0.22);
}

.chip-left {
  left: -6px;
  top: 22%;
}

.chip-right {
  right: -12px;
  top: 48%;
}

.phone {
  position: relative;
  z-index: 1;
  width: min(360px, 88vw);
  min-height: 690px;
  padding: 28px 18px 20px;
  border-radius: 48px;
  background: rgba(223, 243, 255, 0.95);
  box-shadow: 0 30px 70px rgba(71, 123, 142, 0.34), inset 0 0 0 1px rgba(255,255,255,0.8);
  overflow: hidden;
}

.phone-status {
  display: flex;
  justify-content: space-between;
  font-weight: 900;
  padding: 0 20px 26px;
  font-size: 17px;
}

.phone-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 24px;
}

.phone-bell {
  width: 58px;
  height: 58px;
  border-radius: 25px;
  display: grid;
  place-items: center;
  color: var(--green);
  background: rgba(255,255,255,0.75);
  box-shadow: inset 0 0 0 8px rgba(255,255,255,0.34), var(--shadow-soft);
  font-size: 28px;
}

.phone-title {
  flex: 1;
  color: var(--green);
  font-weight: 900;
  font-size: 22px;
  text-align: center;
}

.phone-plus {
  width: 86px;
  height: 46px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: rgba(255,255,255,0.76);
  box-shadow: var(--shadow-soft);
  color: var(--green);
  font-weight: 900;
  font-size: 24px;
}

.phone-toggle,
.phone-tabs {
  background: rgba(255,255,255,0.82);
  border-radius: 999px;
  padding: 6px;
  display: grid;
  gap: 4px;
  box-shadow: var(--shadow-soft);
  margin: 0 auto 18px;
}

.phone-toggle {
  width: 170px;
  grid-template-columns: 1fr 1fr;
}

.phone-tabs {
  grid-template-columns: 1fr 1fr 1fr;
  margin-top: 22px;
}

.pill {
  min-height: 42px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  color: var(--green);
  font-weight: 900;
  font-size: 15px;
}

.pill.active {
  background: var(--green-soft);
  color: var(--cyan);
}

.phone-date {
  margin: 38px 0 34px;
  text-align: center;
  color: var(--green);
  font-size: 26px;
  font-weight: 900;
}

.mini-filters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: 0 26px;
  margin-bottom: 24px;
}

.mini-filter {
  min-height: 34px;
  border-radius: 999px;
  background: rgba(255,255,255,0.85);
  color: var(--green);
  display: grid;
  place-items: center;
  font-weight: 900;
  font-size: 14px;
}

.mini-filter.soft {
  background: var(--green-soft);
  color: #7fc8bb;
}

.reminder-card {
  margin: 14px 8px;
  padding: 20px 16px;
  min-height: 132px;
  border-radius: 34px;
  background: linear-gradient(180deg, rgba(255,247,197,0.98), rgba(255,241,176,0.94));
  box-shadow: 0 15px 30px rgba(132, 138, 80, 0.12);
  text-align: center;
}

.reminder-card .label {
  color: #938f82;
  font-weight: 900;
  font-size: 16px;
  margin-bottom: 8px;
}

.reminder-card .time {
  color: var(--cyan);
  font-family: "M PLUS Rounded 1c", sans-serif;
  font-weight: 900;
  font-size: 50px;
  line-height: 1;
  letter-spacing: 0.02em;
}

.reminder-meta {
  margin-top: 18px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 18px;
  color: var(--cyan);
  font-size: 21px;
  font-weight: 900;
}

.weekday {
  color: #fff;
  background: var(--green-soft);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 14px;
}

.bottom-nav {
  position: absolute;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%);
  width: 278px;
  min-height: 70px;
  border-radius: 999px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: center;
  padding: 6px;
  background: rgba(236, 255, 255, 0.88);
  box-shadow: var(--shadow-soft), inset 0 0 0 1px rgba(255,255,255,0.9);
}

.nav-item {
  height: 58px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  color: #0d252b;
  font-weight: 900;
  font-size: 12px;
}

.nav-item.active {
  background: #d3ecfb;
  color: var(--cyan);
}

.nav-item span {
  display: block;
  font-size: 22px;
  line-height: 1;
  margin-bottom: 2px;
}

.section-heading {
  text-align: center;
  margin: 0 auto 38px;
  max-width: 760px;
}

.section-heading .small {
  display: inline-block;
  color: var(--cyan);
  font-weight: 900;
  margin-bottom: 12px;
  letter-spacing: 0.08em;
}

.section-heading h2 {
  margin: 0;
  font-family: "M PLUS Rounded 1c", sans-serif;
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1.15;
  letter-spacing: 0.03em;
}

.section-heading p {
  margin: 20px 0 0;
  color: var(--green);
  font-weight: 600;
  line-height: 1.9;
  font-size: 18px;
}

.concept-card {
  max-width: 920px;
  margin: 0 auto;
  padding: clamp(30px, 5vw, 58px);
  border-radius: var(--radius-xl);
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(255,255,255,0.68);
}

.concept-card p {
  color: var(--green);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 2.1;
  font-weight: 700;
  margin: 0;
}

.concept-card strong {
  color: var(--cyan-deep);
  font-weight: 900;
}

.concept-note {
  max-width: 840px;
  margin: 0 auto;
  text-align: center;
}

.concept-note p {
  margin: 0;
  color: var(--green);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 2;
  font-weight: 600;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.feature-card {
  padding: 32px 26px;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.58);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(255,255,255,0.62);
  min-height: 210px;
}

.feature-icon {
  width: 62px;
  height: 62px;
  border-radius: 24px;
  display: grid;
  place-items: center;
  background: rgba(223, 241, 235, 0.72);
  color: var(--green);
  font-size: 28px;
  margin-bottom: 20px;
}

.feature-card h3 {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: 22px;
  line-height: 1.45;
  font-weight: 700;
}

.feature-card p {
  margin: 0;
  color: var(--green);
  line-height: 1.9;
  font-size: 17px;
  font-weight: 400;
}

.support-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  max-width: 720px;
  margin: 26px auto 0;
}

.support-tags span {
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.42);
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
  border: 1px solid rgba(111, 143, 138, 0.12);
}

.screen-showcase {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}

.screen-gallery {
  position: relative;
  min-height: 620px;
}

.screen-card {
  position: absolute;
  margin: 0;
  border-radius: 30px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow-phone);
}

.screen-card img {
  width: 100%;
  display: block;
}

.screen-card figcaption {
  padding: 10px 14px 12px;
  text-align: center;
  font-size: 14px;
  font-weight: 900;
  color: var(--green);
  background: rgba(255, 255, 255, 0.84);
}

.screen-card.main {
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  width: 300px;
  z-index: 2;
}

.detail-list {
  padding: 20px 24px;
  border-radius: var(--radius-xl);
  background: rgba(255,255,255,0.5);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(255,255,255,0.58);
}

.detail-list h3 {
  margin: 0 0 18px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.25;
  font-weight: 700;
  color: var(--ink);
}

.detail-item {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 16px;
  padding: 22px 0;
  border-top: 1px solid rgba(111, 145, 139, 0.24);
}

.detail-item:first-of-type {
  border-top: 0;
}

.detail-item .icon {
  width: 48px;
  height: 48px;
  border-radius: 18px;
  background: rgba(223, 241, 235, 0.72);
  color: var(--green);
  display: grid;
  place-items: center;
  font-size: 24px;
}

.detail-item h4 {
  margin: 0 0 6px;
  color: var(--green);
  font-size: 18px;
  font-weight: 900;
}

.detail-item p {
  margin: 0;
  color: var(--green);
  line-height: 1.6;
}

.keyword-cloud {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  max-width: 940px;
  margin: 0 auto;
}

.keyword-cloud span {
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(255,255,255,0.46);
  color: var(--muted);
  font-weight: 600;
  box-shadow: none;
  border: 1px solid rgba(111, 143, 138, 0.12);
}

.cta-section {
  padding-bottom: 110px;
}

.cta-card {
  position: relative;
  overflow: hidden;
  padding: clamp(42px, 7vw, 76px);
  border-radius: 54px;
  background:
    radial-gradient(circle at 18% 18%, rgba(255,255,255,0.92), transparent 32%),
    linear-gradient(135deg, rgba(255,255,255,0.86), rgba(225, 255, 250, 0.78));
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,0.75);
  text-align: center;
}

.cta-card::after {
  content: "🔔";
  position: absolute;
  right: 8%;
  bottom: -20px;
  font-size: 140px;
  opacity: 0.08;
  transform: rotate(-12deg);
}

.cta-card h2 {
  margin: 0;
  font-family: "M PLUS Rounded 1c", sans-serif;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.25;
  font-weight: 800;
}

.cta-card p {
  margin: 22px auto 0;
  max-width: 700px;
  color: var(--green);
  font-size: 18px;
  line-height: 2;
  font-weight: 500;
}

.site-footer {
  padding: 34px 20px 48px;
  text-align: center;
  color: var(--green);
  font-weight: 800;
}

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

  .hero-copy {
    max-width: 680px;
  }

  .phone-wrap {
    min-height: 700px;
  }

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

  .screen-gallery {
    max-width: 560px;
    margin: 0 auto;
  }

  .screen-card.main {
    width: 250px;
  }

}

@media (max-width: 720px) {
  .site-header {
    padding: 16px 18px;
  }

  .nav {
    display: none;
  }

  .brand-icon {
    width: 48px;
    height: 48px;
  }

  .hero {
    padding-top: 36px;
  }

  .hero h1 {
    font-size: 40px;
  }

  .no-wrap {
    white-space: normal;
  }

  .hero-copy {
    font-size: 17px;
    line-height: 1.85;
  }

  .button {
    width: 100%;
  }

  .phone-wrap {
    min-height: 500px;
    margin-bottom: -36px;
  }

  .phone-shot-card {
    width: min(300px, 84vw);
  }

  .hero-chip {
    font-size: 13px;
    padding: 8px 12px;
  }

  .chip-left {
    left: 12px;
    top: 8%;
  }

  .chip-right {
    right: 12px;
    top: 20%;
  }

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

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

  .screen-gallery {
    min-height: 440px;
  }

  .screen-card.main {
    width: 230px;
    top: 0;
  }

  .detail-list {
    padding: 22px 18px;
  }

  .detail-item {
    grid-template-columns: 46px 1fr;
    gap: 12px;
  }
}

@media (max-width: 420px) {
  .brand span {
    font-size: 18px;
  }

  .header-cta {
    min-height: 42px;
    padding: 0 14px;
    font-size: 14px;
  }

  .section {
    padding-left: 16px;
    padding-right: 16px;
  }

  .phone-wrap {
    min-height: 450px;
  }

  .phone-shot-card {
    width: min(276px, 86vw);
    border-radius: 26px;
  }

  .hero-chip {
    display: none;
  }

  .screen-gallery {
    min-height: 500px;
  }

  .screen-card.main {
    position: static;
    width: 100%;
    max-width: 300px;
    margin: 0 auto 16px;
    transform: none;
  }
}