:root {
  --pink-50: #fff6fa;
  --pink-100: #ffe9f2;
  --pink-200: #ffd5e5;
  --pink-300: #ffb6d1;
  --pink-400: #ff8db6;
  --pink-500: #f96aa0;
  --pink-600: #e04d87;
  --ink: #3c2230;
  --ink-soft: #6d4c5b;
  --white: #ffffff;
  --radius-lg: 26px;
  --radius-md: 18px;
  --shadow-soft: 0 18px 40px rgba(207, 105, 152, 0.16);
  --shadow-card: 0 10px 26px rgba(207, 105, 152, 0.12);
  --nav-h: 68px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100%;
  font-family: "Helvetica Neue", "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  line-height: 1.7;
  background-image: linear-gradient(165deg, #fff7fb 0%, #ffeaf3 40%, #ffffff 100%);
  background-attachment: fixed;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("./bg.jpg");
  background-size: cover;
  background-position: center;
  opacity: 0.3;
  z-index: -2;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.84) 0%, rgba(255, 236, 245, 0.86) 45%, rgba(255, 255, 255, 0.92) 100%);
  z-index: -1;
}

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

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

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(249, 106, 160, 0.18);
}

.nav-inner {
  max-width: 1140px;
  margin: 0 auto;
  min-height: var(--nav-h);
  padding: 10px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 6px 14px rgba(224, 77, 135, 0.28);
}

.brand-name {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.04em;
  background-image: linear-gradient(120deg, var(--pink-600), var(--pink-400));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-links::-webkit-scrollbar {
  display: none;
}

.nav-links a {
  display: block;
  white-space: nowrap;
  padding: 8px 15px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-soft);
  transition: background-color 0.25s ease, color 0.25s ease;
}

.nav-links a:hover {
  color: var(--pink-600);
  background-color: rgba(255, 182, 209, 0.34);
}

.section {
  scroll-margin-top: calc(var(--nav-h) + 12px);
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 22px;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--pink-600);
}

.banner {
  position: relative;
  padding: 96px 22px 96px;
  text-align: center;
}

.banner-inner {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.banner-logo {
  width: 108px;
  height: 108px;
  border-radius: 30px;
  object-fit: cover;
  box-shadow: 0 20px 42px rgba(224, 77, 135, 0.3);
  border: 4px solid rgba(255, 255, 255, 0.85);
}

.banner h1 {
  font-size: clamp(42px, 9vw, 76px);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: 0.02em;
  background-image: linear-gradient(120deg, var(--pink-500) 0%, var(--pink-300) 55%, var(--pink-600) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.banner-text {
  max-width: 640px;
  font-size: clamp(16px, 2.4vw, 19px);
  color: var(--ink-soft);
}

.banner-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.tag {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--pink-600);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(249, 106, 160, 0.28);
  box-shadow: var(--shadow-card);
}

.banner-meta {
  width: 100%;
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.meta-item {
  padding: 18px 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(249, 106, 160, 0.16);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.meta-item strong {
  font-size: 16px;
  color: var(--pink-600);
}

.meta-item span {
  font-size: 13px;
  color: var(--ink-soft);
}

.grid {
  display: grid;
}

.intro {
  padding: 40px 0 90px;
}

.section-head {
  max-width: 720px;
  margin: 0 auto 46px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.section-head h2 {
  font-size: clamp(26px, 4.4vw, 40px);
  line-height: 1.2;
  font-weight: 800;
  color: var(--ink);
}

.section-sub {
  color: var(--ink-soft);
  font-size: 16px;
}

.intro-grid {
  gap: 34px;
}

.intro-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 30px;
  align-items: center;
  padding: 26px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(249, 106, 160, 0.14);
  box-shadow: var(--shadow-soft);
}

.intro-row:nth-child(even) {
  grid-template-columns: 1fr 200px;
}

.intro-row:nth-child(even) .intro-media {
  order: 2;
}

.intro-media {
  position: relative;
}

.intro-media::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  background-image: linear-gradient(180deg, rgba(255, 141, 182, 0.06), rgba(255, 255, 255, 0.16));
  pointer-events: none;
}

.intro-media img {
  width: 100%;
  aspect-ratio: 9 / 20;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 3px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 14px 30px rgba(207, 105, 152, 0.22);
}

.intro-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.index {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.18em;
  color: var(--pink-400);
}

.intro-body h3 {
  font-size: clamp(20px, 3vw, 26px);
  line-height: 1.3;
  font-weight: 800;
  color: var(--ink);
}

.intro-body p {
  color: var(--ink-soft);
  font-size: 16px;
}

.screenshot {
  padding: 20px 0 90px;
}

.shot-grid {
  gap: 24px;
  align-items: center;
  grid-template-columns: 1.1fr 1fr;
  margin-bottom: 34px;
}

.shot {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.shot figcaption {
  font-size: 14px;
  color: var(--ink-soft);
  text-align: center;
}

.phone {
  width: 100%;
  padding: 12px;
  border-radius: 34px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(249, 106, 160, 0.22);
  box-shadow: var(--shadow-soft);
}

.phone img {
  width: 100%;
  aspect-ratio: 9 / 20;
  object-fit: cover;
  border-radius: 24px;
}

.shot-main .phone {
  max-width: 340px;
  margin: 0 auto;
}

.shot-side {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: center;
}

.shot-side .phone {
  max-width: 220px;
  margin: 0 auto;
  border-radius: 28px;
}

.shot-side .phone img {
  border-radius: 20px;
}

.feature-grid {
  gap: 18px;
  grid-template-columns: repeat(4, 1fr);
}

.feature {
  padding: 22px 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(249, 106, 160, 0.16);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-dot {
  width: 34px;
  height: 8px;
  border-radius: 999px;
  background-image: linear-gradient(90deg, var(--pink-500), var(--pink-200));
}

.feature h4 {
  font-size: 17px;
  font-weight: 800;
  color: var(--pink-600);
}

.feature p {
  font-size: 14px;
  color: var(--ink-soft);
}

.footer {
  padding: 30px 0 46px;
}

.connect-grid {
  gap: 24px;
  grid-template-columns: 1.5fr 1fr;
}

.connect-card {
  padding: 34px 30px;
  border-radius: var(--radius-lg);
  background-image: linear-gradient(140deg, rgba(255, 255, 255, 0.94), rgba(255, 233, 242, 0.94));
  border: 1px solid rgba(249, 106, 160, 0.2);
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.connect-card h2 {
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 800;
}

.connect-text {
  color: var(--ink-soft);
  font-size: 16px;
}

.mail {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mail-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--pink-400);
}

.mail a {
  font-size: clamp(18px, 2.6vw, 22px);
  font-weight: 700;
  color: var(--pink-600);
  word-break: break-all;
}

.mail a:hover {
  text-decoration: underline;
}

.connect-side {
  padding: 30px 26px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(249, 106, 160, 0.16);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.connect-side h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--pink-600);
}

.connect-side p {
  color: var(--ink-soft);
  font-size: 14px;
}

.connect-links {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.connect-links a {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-soft);
}

.connect-links a:hover {
  color: var(--pink-600);
}

.footer-bottom {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid rgba(249, 106, 160, 0.22);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.copyright {
  font-size: 14px;
  color: var(--ink-soft);
}

@media (max-width: 900px) {
  .intro-row,
  .intro-row:nth-child(even) {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .intro-row:nth-child(even) .intro-media {
    order: 0;
  }

  .intro-media {
    max-width: 200px;
  }

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

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

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

@media (max-width: 700px) {
  :root {
    --nav-h: 60px;
  }

  .nav-inner {
    padding: 8px 16px;
    gap: 10px;
  }

  .brand img {
    width: 32px;
    height: 32px;
    border-radius: 10px;
  }

  .brand-name {
    font-size: 18px;
  }

  .nav-links a {
    padding: 7px 12px;
    font-size: 14px;
  }

  .container {
    padding: 0 16px;
  }

  .banner {
    padding: 66px 16px 72px;
  }

  .banner-logo {
    width: 84px;
    height: 84px;
    border-radius: 24px;
  }

  .banner-meta {
    grid-template-columns: 1fr;
  }

  .intro,
  .screenshot {
    padding-bottom: 66px;
  }

  .intro-row {
    padding: 20px 18px;
  }

  .shot-side {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .shot-side .phone {
    padding: 9px;
    border-radius: 24px;
  }

  .shot-side .phone img {
    border-radius: 16px;
  }

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

  .connect-card,
  .connect-side {
    padding: 24px 20px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 400px) {
  .shot-side {
    grid-template-columns: 1fr;
  }

  .shot-side .phone {
    max-width: 220px;
  }
}