:root,
html[data-theme='light'] {
  --tint: #007aff;
  --tint-soft: rgba(0, 122, 255, 0.14);
  --tint-glow: rgba(0, 122, 255, 0.22);
  --tint-border: color-mix(in srgb, var(--tint) 35%, transparent);
  --success: #34c759;
  --success-soft: rgba(52, 199, 89, 0.16);
  --on-tint: #ffffff;
  --bg: #f2f2f7;
  --label: #0a0a0c;
  --secondary: rgba(10, 10, 12, 0.58);
  --tertiary: rgba(10, 10, 12, 0.38);
  --fill-strong: #ffffff;
  --line: rgba(15, 27, 45, 0.1);
  --shadow: rgba(15, 45, 96, 0.1);
  --radius: 22px;
  --max: 1120px;
  --font: "Manrope", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Noto Sans SC", sans-serif;
  --hero-grad-a: rgba(0, 122, 255, 0.14);
  --hero-grad-b: rgba(52, 199, 89, 0.1);
  --hero-grad-c: rgba(0, 122, 255, 0.06);
}

html[data-theme='dark'] {
  --tint: #0a84ff;
  --tint-soft: rgba(10, 132, 255, 0.22);
  --tint-glow: rgba(10, 132, 255, 0.35);
  --tint-border: color-mix(in srgb, var(--tint) 45%, transparent);
  --success: #30d158;
  --success-soft: rgba(48, 209, 88, 0.18);
  --on-tint: #ffffff;
  --bg: #000000;
  --label: #ffffff;
  --secondary: rgba(235, 235, 245, 0.6);
  --tertiary: rgba(235, 235, 245, 0.35);
  --fill-strong: rgba(44, 44, 46, 0.94);
  --line: rgba(84, 84, 88, 0.55);
  --shadow: rgba(0, 0, 0, 0.45);
  --hero-grad-a: rgba(10, 132, 255, 0.22);
  --hero-grad-b: rgba(48, 209, 88, 0.12);
  --hero-grad-c: rgba(10, 132, 255, 0.1);
}

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

html {
  scroll-behavior: smooth;
  color-scheme: light dark;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--label);
  background: var(--bg);
  letter-spacing: -0.2px;
  -webkit-font-smoothing: antialiased;
  transition: background 0.25s ease, color 0.25s ease;
}

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

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.shell {
  width: min(100% - 40px, var(--max));
  margin-inline: auto;
}

.ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(ellipse 90% 55% at 8% -8%, var(--hero-grad-a), transparent 55%),
    radial-gradient(ellipse 70% 45% at 96% 4%, var(--hero-grad-b), transparent 50%),
    radial-gradient(ellipse 60% 40% at 50% 100%, var(--hero-grad-c), transparent 55%),
    var(--bg);
  transition: background 0.25s ease;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(48px);
  opacity: 0.55;
  animation: orb-drift 16s ease-in-out infinite;
}

.orb-a {
  width: min(420px, 50vw);
  height: min(420px, 50vw);
  top: -80px;
  right: -60px;
  background: var(--tint-soft);
}

.orb-b {
  width: min(340px, 42vw);
  height: min(340px, 42vw);
  bottom: 12%;
  left: -100px;
  background: var(--success-soft);
  animation-delay: -5s;
  animation-duration: 20s;
}

@keyframes orb-drift {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(-18px, 14px, 0) scale(1.05);
  }
}

.page {
  position: relative;
  z-index: 1;
}

/* ===== Nav ===== */
.topnav {
  --nav-h: 40px;
  --nav-pad-x: 14px;
  --nav-radius: 999px;
  --nav-font: 13px;
  --nav-weight: 600;
  --nav-shadow: 0 6px 16px var(--shadow);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0 8px;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-lockup img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  box-shadow: 0 8px 20px var(--tint-glow);
}

.brand-word {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.4px;
}

.nav-chrome {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  order: 2;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
  flex: 1;
  min-width: 0;
  order: 1;
}

.nav-toggle {
  display: none;
  box-sizing: border-box;
  width: var(--nav-h);
  height: var(--nav-h);
  min-height: var(--nav-h);
  padding: 0;
  border-radius: var(--nav-radius);
  border: 0.5px solid var(--line);
  background: var(--fill-strong);
  color: var(--label);
  box-shadow: var(--nav-shadow);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease,
    box-shadow 0.2s ease;
}

.nav-toggle:hover,
.topnav--drawer.is-open .nav-toggle {
  border-color: var(--tint-border);
  color: var(--tint);
}

.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  display: block;
  width: 16px;
  height: 1.5px;
  border-radius: 1px;
  background: currentColor;
  transition: transform 0.22s ease, opacity 0.22s ease;
}

.nav-toggle-bars {
  position: relative;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle-bars::before {
  top: -5px;
}

.nav-toggle-bars::after {
  top: 5px;
}

.topnav--drawer.is-open .nav-toggle-bars {
  background: transparent;
}

.topnav--drawer.is-open .nav-toggle-bars::before {
  top: 0;
  transform: rotate(45deg);
}

.topnav--drawer.is-open .nav-toggle-bars::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Shared chrome for nav chips / buttons */
.nav-link,
.lang-trigger,
.icon-btn,
.nav-control,
.nav-account-group {
  box-sizing: border-box;
  height: var(--nav-h);
  min-height: var(--nav-h);
  border-radius: var(--nav-radius);
  font: inherit;
  font-size: var(--nav-font);
  font-weight: var(--nav-weight);
  letter-spacing: -0.2px;
  line-height: 1;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease,
    box-shadow 0.2s ease;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--nav-pad-x);
  color: var(--label);
  border: 0.5px solid var(--line);
  background: var(--fill-strong);
  box-shadow: var(--nav-shadow);
  text-decoration: none;
}

.nav-link:hover {
  border-color: var(--tint-border);
  color: var(--tint);
  background: var(--fill-strong);
}

.lang-picker {
  position: relative;
}

.lang-trigger,
.icon-btn,
.nav-control,
.nav-account-group {
  border: 0.5px solid var(--line);
  background: var(--fill-strong);
  color: var(--label);
  box-shadow: var(--nav-shadow);
}

.lang-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 12px 0 var(--nav-pad-x);
  cursor: pointer;
}

.lang-trigger:hover,
.lang-picker.is-open .lang-trigger,
.icon-btn:hover,
.nav-control:hover {
  border-color: var(--tint-border);
  color: var(--tint);
}

.lang-trigger-text {
  max-width: 9.5em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lang-chevron {
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
  color: var(--secondary);
  transition: transform 0.2s ease, color 0.2s ease;
}

.lang-picker.is-open .lang-chevron {
  transform: rotate(180deg);
  color: var(--tint);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 40;
  min-width: 180px;
  max-height: min(320px, 60vh);
  overflow: auto;
  margin: 0;
  padding: 6px;
  list-style: none;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--fill-strong);
  box-shadow: 0 16px 40px var(--shadow);
  backdrop-filter: blur(12px);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--tint-border) transparent;
}

.lang-menu::-webkit-scrollbar {
  width: 6px;
}

.lang-menu::-webkit-scrollbar-track {
  margin: 8px 0;
  background: transparent;
}

.lang-menu::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: color-mix(in srgb, var(--tint) 28%, transparent);
  border: 1px solid transparent;
  background-clip: padding-box;
}

.lang-menu::-webkit-scrollbar-thumb:hover {
  background: color-mix(in srgb, var(--tint) 48%, transparent);
  background-clip: padding-box;
}

.lang-option {
  display: block;
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--label);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.2px;
  text-align: left;
  padding: 10px 12px;
  border-radius: 11px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.lang-option:hover,
.lang-option:focus-visible {
  background: var(--tint-soft);
  color: var(--tint);
  outline: none;
}

.lang-option.is-active {
  background: var(--tint-soft);
  color: var(--tint);
}

.lang-option.is-active::after {
  content: '';
  float: right;
  width: 6px;
  height: 6px;
  margin-top: 6px;
  border-radius: 50%;
  background: var(--tint);
}

.icon-btn {
  width: var(--nav-h);
  padding: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.auth-guest,
.auth-user {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
  flex-shrink: 0;
  min-width: 0;
}

.auth-guest[hidden],
.auth-user[hidden],
.cta-guest[hidden],
.cta-user[hidden] {
  display: none !important;
}

.nav-control {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--nav-pad-x);
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  flex: 0 0 auto;
}

button.nav-control {
  appearance: none;
  -webkit-appearance: none;
  margin: 0;
  font: inherit;
  font-size: var(--nav-font);
  font-weight: var(--nav-weight);
  letter-spacing: -0.2px;
  line-height: 1;
  color: inherit;
}

.nav-control-primary {
  border-color: transparent;
  background: var(--tint);
  color: var(--on-tint);
  box-shadow: 0 8px 20px var(--tint-glow);
}

.nav-control-primary:hover {
  border-color: transparent;
  background: var(--tint);
  color: var(--on-tint);
  filter: brightness(1.06);
}

.nav-account-group {
  display: inline-flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 6px;
  min-width: 0;
  max-width: 100%;
  width: auto;
  height: var(--nav-h);
  max-height: var(--nav-h);
  padding: 0 4px 0 6px;
  flex: 0 0 auto;
  overflow-x: auto;
  overflow-y: hidden;
}

.nav-account-group .nav-account {
  padding: 0 2px 0 0;
  max-width: none;
  flex: 1 1 auto;
  min-width: 0;
}

.nav-account-group .nav-control {
  flex: 0 0 auto;
  width: auto;
  height: 32px;
  min-height: 32px;
  max-height: 32px;
  padding: 0 12px;
  margin-left: 2px;
  box-shadow: none;
}

.nav-account {
  display: inline-flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 8px;
  max-width: none;
  font-size: var(--nav-font);
  font-weight: var(--nav-weight);
  color: var(--secondary);
  padding: 0 4px;
  min-width: 0;
}

.nav-avatar {
  position: relative;
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  overflow: hidden;
  background: rgba(127, 127, 127, 0.16);
  border: 1px solid var(--line);
}

.nav-avatar img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.nav-avatar-letter {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--label);
  line-height: 1;
}

.nav-avatar-letter[hidden],
.nav-avatar img[hidden] {
  display: none !important;
}

.nav-account-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
  max-width: 12em;
}

@media (max-width: 720px) {
  /* 仅首页可折叠导航：法律页等无汉堡时保持原横向菜单 */
  .topnav--drawer {
    position: relative;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
  }

  .topnav--drawer .nav-chrome {
    order: 1;
    margin-left: auto;
  }

  .topnav--drawer .nav-toggle {
    display: inline-flex;
  }

  .topnav--drawer .nav-actions {
    display: none;
    order: 2;
    width: 100%;
    flex: none;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 12px;
    border-radius: 18px;
    border: 0.5px solid var(--line);
    background: var(--fill-strong);
    box-shadow: 0 12px 28px var(--shadow);
  }

  .topnav--drawer.is-open .nav-actions {
    display: flex;
  }

  .topnav--drawer .nav-actions .nav-link,
  .topnav--drawer .nav-actions .lang-picker,
  .topnav--drawer .nav-actions .auth-guest,
  .topnav--drawer .nav-actions .auth-user {
    width: 100%;
  }

  .topnav--drawer .nav-actions .lang-trigger,
  .topnav--drawer .nav-actions .nav-link,
  .topnav--drawer .nav-actions .auth-guest .nav-control,
  .topnav--drawer .nav-actions .auth-user > .nav-control {
    width: 100%;
    justify-content: center;
  }

  .topnav--drawer .nav-actions .lang-menu {
    left: 0;
    right: 0;
    min-width: 0;
    width: 100%;
  }

  .topnav--drawer .nav-actions .auth-user {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    width: 100%;
    flex-shrink: 1;
  }

  .topnav--drawer .nav-actions .auth-user[hidden],
  .topnav--drawer .nav-actions .auth-guest[hidden] {
    display: none !important;
  }

  .topnav--drawer .nav-actions .nav-account-group {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    justify-content: flex-start;
    align-items: center;
    height: var(--nav-h);
    max-height: var(--nav-h);
    flex: none;
    flex-wrap: nowrap;
  }

  .topnav--drawer .nav-actions .nav-account-group .nav-account {
    max-width: none;
    flex: 1 1 auto;
    min-width: 0;
  }

  .topnav--drawer .nav-actions .nav-account-group .nav-control {
    width: auto;
    flex: 0 0 auto;
    margin-left: auto;
    justify-content: center;
  }

  .topnav--drawer .nav-actions .nav-account-name {
    max-width: none;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .hide-sm {
    display: none;
  }
}

/* ===== Hero ===== */
.hero {
  min-height: min(88vh, 860px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
  padding: 36px 0 56px;
}

@media (min-width: 960px) {
  .hero {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
  }
}

.hero-hook {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--tint);
  animation: rise-in 0.65s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero-brand {
  display: block;
  font-size: clamp(48px, 10vw, 84px);
  font-weight: 800;
  letter-spacing: -3px;
  line-height: 1.05;
  margin: 0 0 16px;
  overflow: visible;
  animation: rise-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.04s both;
}

.hero-slogan {
  display: block;
  max-width: 14em;
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 600;
  letter-spacing: -0.5px;
  line-height: 1.3;
  margin: 0 0 14px;
  animation: rise-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.1s both;
}

.hero-support {
  display: block;
  max-width: 34em;
  font-size: clamp(15px, 2.2vw, 17px);
  line-height: 1.55;
  color: var(--secondary);
  margin: 0 0 28px;
  animation: rise-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.16s both;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  animation: rise-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.22s both;
}

.hero-visual {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: rise-in 0.85s cubic-bezier(0.22, 1, 0.36, 1) 0.18s both;
}

.phone-stack {
  position: relative;
  width: min(100%, 380px);
  height: 460px;
}

.phone {
  position: absolute;
  width: 210px;
  border-radius: 28px;
  box-shadow: 0 24px 60px var(--shadow);
  transition: transform 0.35s ease;
}

.phone-back {
  left: 8%;
  top: 8%;
  transform: rotate(-8deg) scale(0.9);
  opacity: 0.78;
  z-index: 1;
}

.phone-mid {
  right: 4%;
  top: 4%;
  transform: rotate(7deg) scale(0.92);
  opacity: 0.88;
  z-index: 2;
}

.phone-front {
  left: 50%;
  top: 10%;
  transform: translateX(-50%);
  z-index: 3;
  width: 230px;
}

.phone-stack:hover .phone-back {
  transform: rotate(-10deg) scale(0.92) translateY(-4px);
}

.phone-stack:hover .phone-mid {
  transform: rotate(9deg) scale(0.94) translateY(-6px);
}

.phone-stack:hover .phone-front {
  transform: translateX(-50%) translateY(-8px);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  border: 0.5px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--tint);
  color: var(--on-tint);
  box-shadow: 0 10px 28px var(--tint-glow);
}

.btn-secondary {
  background: var(--fill-strong);
  color: var(--tint);
  border-color: var(--line);
  box-shadow: 0 8px 22px var(--shadow);
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Sections ===== */
.section {
  padding: 72px 0;
}

.desire {
  padding-bottom: 88px;
}

.section-title {
  margin: 0 0 10px;
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 800;
  letter-spacing: -1.2px;
  /* ≥1.25 so Manrope descenders (g/y/p) are not clipped */
  line-height: 1.3;
  overflow: visible;
}

.section-sub {
  margin: 0 0 36px;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.55;
  color: var(--secondary);
}

.showcase-section {
  padding-top: 104px;
  padding-bottom: 112px;
}

.showcase-intro {
  max-width: 38em;
  margin-bottom: 64px;
}

.showcase-intro .section-sub {
  margin-bottom: 0;
}

@media (min-width: 800px) {
  .showcase-intro {
    margin-bottom: 80px;
  }
}

/* Product shots */
.shot-grid {
  display: grid;
  gap: 48px;
  justify-items: center;
  max-width: 880px;
  margin-inline: auto;
}

@media (min-width: 800px) {
  .shot-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 56px 48px;
  }
}

.shot-card {
  margin: 0;
  width: 100%;
  max-width: 220px;
  text-align: center;
}

.shot-frame {
  margin-bottom: 22px;
  line-height: 0;
}

.shot-frame img {
  display: block;
  width: 88px;
  max-width: 100%;
  height: auto;
  aspect-ratio: 320 / 640;
  margin-inline: auto;
  border-radius: 16px;
  filter: drop-shadow(0 12px 28px var(--shadow));
}

.shot-card figcaption {
  text-align: center;
}

.shot-card figcaption strong {
  display: block;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.4px;
  margin-bottom: 10px;
  line-height: 1.35;
}

.shot-card figcaption span {
  display: block;
  font-size: 15px;
  line-height: 1.6;
  color: var(--secondary);
  letter-spacing: -0.1px;
}

.phone {
  height: auto;
  aspect-ratio: 320 / 640;
  max-width: none;
}

.download-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 640px) {
  .download-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.download-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
  padding: 22px 22px 20px;
  border-radius: var(--radius);
  background: var(--fill-strong);
  border: 1px solid var(--line);
  box-shadow: 0 10px 28px var(--shadow);
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.download-card:hover:not(:disabled):not(.is-disabled) {
  border-color: var(--tint-border);
  transform: translateY(-2px);
}

.download-card.is-recommended {
  border-color: var(--tint);
  box-shadow: 0 14px 36px var(--tint-glow);
}

.download-card.is-disabled {
  opacity: 0.72;
  cursor: not-allowed;
}

.dl-badge {
  display: none;
  font-size: 12px;
  font-weight: 700;
  color: var(--tint);
  background: var(--tint-soft);
  border-radius: 999px;
  padding: 4px 10px;
}

.download-card.is-recommended .dl-badge {
  display: inline-flex;
}

.dl-name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.4px;
  line-height: 1.35;
  overflow: visible;
}

.dl-meta {
  font-size: 14px;
  color: var(--secondary);
}

.dl-action {
  margin-top: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--tint);
}

.download-card.is-disabled .dl-action {
  color: var(--tertiary);
}

.feature-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 800px) {
  .feature-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }
}

.features-intro {
  max-width: 40em;
  margin-bottom: 8px;
}

.feature-item {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px 22px 22px;
  border-radius: var(--radius);
  background: var(--fill-strong);
  border: 1px solid var(--line);
  box-shadow: 0 10px 28px var(--shadow);
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.feature-item:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--tint) 28%, transparent);
  box-shadow: 0 16px 36px var(--tint-glow);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--tint);
  background:
    linear-gradient(145deg, var(--tint-soft), transparent 70%),
    var(--fill-strong);
  border: 1px solid var(--line);
}

.feature-icon svg {
  width: 30px;
  height: 30px;
}

.feature-title {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
  line-height: 1.35;
}

.feature-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.55;
  color: var(--secondary);
}

.site-footer {
  padding: 40px 0 56px;
  border-top: 0.5px solid var(--line);
}

.footer-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  align-items: center;
  justify-content: space-between;
}

.footer-note {
  margin: 0;
  font-size: 14px;
  color: var(--secondary);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-size: 14px;
  font-weight: 600;
}

.footer-links a:hover {
  color: var(--tint);
}

.back-to-top {
  position: fixed;
  z-index: 60;
  right: max(20px, env(safe-area-inset-right, 0px));
  bottom: max(24px, env(safe-area-inset-bottom, 0px));
  box-sizing: border-box;
  width: 44px;
  height: 44px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 0.5px solid var(--line);
  background: var(--fill-strong);
  color: var(--label);
  box-shadow: 0 6px 16px var(--shadow);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(8px);
  transition:
    opacity 0.22s ease,
    transform 0.22s ease,
    visibility 0.22s ease,
    border-color 0.15s ease,
    color 0.15s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  border-color: var(--tint-border);
  color: var(--tint);
}

.back-to-top:focus-visible {
  outline: 2px solid var(--tint);
  outline-offset: 3px;
}

@media (max-width: 720px) {
  .back-to-top {
    right: max(16px, env(safe-area-inset-right, 0px));
    bottom: max(20px, env(safe-area-inset-bottom, 0px));
    width: 42px;
    height: 42px;
  }
}

.legal-page {
  padding: 32px 0 72px;
}

.legal-back {
  display: inline-flex;
  margin-bottom: 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--tint);
}

.legal-title {
  margin: 0 0 8px;
  font-size: clamp(32px, 6vw, 44px);
  font-weight: 800;
  letter-spacing: -1.2px;
}

.legal-updated {
  margin: 0 0 28px;
  font-size: 14px;
  color: var(--tertiary);
}

.legal-block {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--secondary);
  white-space: pre-wrap;
}

.legal-block a {
  color: var(--tint);
  font-weight: 600;
}

@media (prefers-reduced-motion: reduce) {
  .orb,
  .hero-hook,
  .hero-brand,
  .hero-slogan,
  .hero-support,
  .hero-visual,
  .cta-row,
  .phone,
  .back-to-top {
    animation: none;
  }
  .orb,
  .hero-hook,
  .hero-brand,
  .hero-slogan,
  .hero-support,
  .hero-visual,
  .cta-row,
  .phone {
    transition: none;
  }
  .back-to-top {
    transition: none;
    transform: none;
  }
}