:root {
  --page: #ffffff;
  --soft: #f5f7fa;
  --soft-blue: #edf4ff;
  --card: rgba(255, 255, 255, 0.88);
  --text: #121417;
  --muted: #68707d;
  --line: #e5e8ed;
  --blue: #1769e0;
  --blue-dark: #0b56c7;
  --green: #20a162;
  --shadow-sm: 0 10px 30px rgba(22, 32, 51, 0.06);
  --shadow-md: 0 24px 70px rgba(22, 32, 51, 0.10);
  --radius-lg: 32px;
  --radius-md: 22px;
  --radius-sm: 14px;
  --container: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background: var(--page);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

.mobile-only {
  display: none !important;
}

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

.skip-link {
  position: fixed;
  z-index: 999;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  border-radius: 10px;
  color: #fff;
  background: var(--blue);
  text-decoration: none;
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.container,
.nav-wrap {
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  right: 0;
  left: 0;
  border-bottom: 1px solid transparent;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: saturate(180%) blur(20px);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.site-header.scrolled {
  border-color: rgba(18, 20, 23, 0.08);
  box-shadow: 0 8px 24px rgba(22, 32, 51, 0.04);
}

.nav-wrap {
  display: flex;
  height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  font-size: 21px;
  font-weight: 760;
  letter-spacing: -0.04em;
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 34px;
}

.site-nav a,
.footer-links a {
  color: #404751;
  font-size: 14px;
  font-weight: 570;
  text-decoration: none;
  transition: color 160ms ease;
}

.site-nav a:hover,
.footer-links a:hover {
  color: var(--blue);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 0;
  border-radius: 12px;
  background: var(--soft);
  cursor: pointer;
}

.menu-toggle > span:not(.sr-only) {
  display: block;
  width: 18px;
  height: 1.5px;
  margin: 5px auto;
  border-radius: 2px;
  background: var(--text);
  transition: transform 160ms ease, opacity 160ms ease;
}

.hero {
  position: relative;
  display: grid;
  min-height: 790px;
  align-items: center;
  padding: 150px 0 90px;
  overflow: hidden;
  background:
    linear-gradient(180deg, #fff 0%, #fbfdff 62%, #f4f8ff 100%);
}

.hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, #dfe7f2, transparent);
  content: "";
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  pointer-events: none;
}

.hero-glow-one {
  top: 14%;
  right: -130px;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(41, 122, 255, 0.16), rgba(41, 122, 255, 0));
}

.hero-glow-two {
  bottom: 5%;
  left: -220px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(90, 196, 255, 0.11), rgba(90, 196, 255, 0));
}

.hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(390px, 0.85fr);
  align-items: center;
  gap: clamp(48px, 6vw, 80px);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.18em;
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(52px, 5.2vw, 64px);
  font-weight: 760;
  letter-spacing: -0.065em;
  line-height: 1.06;
  word-break: keep-all;
}

.hero-subtitle {
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(20px, 2.3vw, 27px);
  letter-spacing: -0.02em;
}

.hero-plan-options {
  display: flex;
  width: fit-content;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  margin-top: 27px;
}

.hero-plan-options > span {
  padding: 7px 11px;
  border: 1px solid rgba(23, 105, 224, 0.12);
  border-radius: 999px;
  color: var(--blue);
  background: rgba(255, 255, 255, 0.78);
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 8px 20px rgba(31, 76, 138, 0.05);
}

.hero-plan-options > small {
  margin-left: 5px;
  color: #858b95;
  font-size: 12px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 650;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

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

.button:focus-visible,
.site-nav a:focus-visible,
.tutorial-card:focus-visible,
.pricing-referral-card .button:focus-visible,
.logo:focus-visible {
  outline: 3px solid rgba(23, 105, 224, 0.24);
  outline-offset: 4px;
}

.button-primary {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 12px 24px rgba(23, 105, 224, 0.20);
}

.button-primary:hover {
  background: var(--blue-dark);
}

.button-secondary {
  border-color: #d9dee6;
  color: var(--text);
  background: rgba(255, 255, 255, 0.82);
}

.button-secondary:hover {
  border-color: #bec7d3;
  background: #fff;
}

.button-wide {
  width: 100%;
}

.hero-note {
  margin: 18px 0 0;
  color: #858b95;
  font-size: 13px;
}

.hero-product {
  position: relative;
  min-height: 510px;
}

.product-orbit {
  position: absolute;
  border: 1px solid rgba(23, 105, 224, 0.12);
  border-radius: 50%;
}

.orbit-one {
  top: 24px;
  right: -28px;
  width: 420px;
  height: 420px;
}

.orbit-two {
  top: 88px;
  right: 36px;
  width: 290px;
  height: 290px;
}

.product-card {
  position: absolute;
  z-index: 2;
  top: 50%;
  right: 28px;
  width: min(420px, calc(100% - 24px));
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.82);
  border-radius: 34px;
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.96), rgba(244, 249, 255, 0.86));
  box-shadow:
    0 32px 90px rgba(38, 83, 148, 0.16),
    inset 0 1px 0 #fff;
  transform: translateY(-50%);
  backdrop-filter: blur(24px);
}

.product-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.product-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(145deg, #2578ed, #0f55bd);
  font-size: 20px;
  font-weight: 780;
  box-shadow: 0 10px 20px rgba(23, 105, 224, 0.22);
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #52606f;
  font-size: 12px;
}

.live-badge i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 5px rgba(32, 161, 98, 0.10);
}

.product-small {
  margin: 50px 0 8px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 680;
}

.product-title {
  margin: 0;
  font-size: 38px;
  font-weight: 740;
  letter-spacing: -0.055em;
  line-height: 1.16;
}

.product-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 38px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.product-stats div {
  display: grid;
  gap: 2px;
}

.product-stats strong {
  font-size: 19px;
  letter-spacing: -0.03em;
}

.product-stats span {
  color: var(--muted);
  font-size: 11px;
}

.device-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 22px;
}

.device-tags span {
  padding: 6px 9px;
  border-radius: 8px;
  color: #596270;
  background: #eef2f7;
  font-size: 11px;
}

.section {
  padding: 116px 0;
  scroll-margin-top: 64px;
}

.section-soft {
  background: var(--soft);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 48px;
}

.section-heading.centered {
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.section-heading h2,
.contact-copy h2,
.tutorial-hero h1 {
  margin: 0;
  font-size: clamp(38px, 5vw, 58px);
  font-weight: 740;
  letter-spacing: -0.055em;
  line-height: 1.12;
}

.section-heading > p:last-child,
.contact-copy > p,
.tutorial-hero > p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.advantage-card,
.price-card,
.process-item,
.tutorial-card,
.guide-step {
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: var(--shadow-sm);
}

.advantage-card {
  min-height: 276px;
  padding: 28px;
  border-radius: var(--radius-md);
}

.feature-symbol {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border-radius: 16px;
  color: var(--blue);
  background: var(--soft-blue);
  font-size: 17px;
  font-weight: 760;
}

.advantage-card h3 {
  margin: 52px 0 10px;
  font-size: 20px;
  letter-spacing: -0.025em;
}

.advantage-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.pricing-section {
  background: #fff;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
  gap: 18px;
}

.price-card {
  position: relative;
  display: flex;
  min-height: 520px;
  flex-direction: column;
  justify-content: space-between;
  padding: 34px;
  border-radius: 28px;
}

.price-card.featured {
  border-color: rgba(23, 105, 224, 0.62);
  background:
    linear-gradient(180deg, #f5f9ff 0%, #fff 70%);
  box-shadow: 0 28px 70px rgba(23, 105, 224, 0.13);
  transform: translateY(-12px);
}

.recommend-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 5px 10px;
  border-radius: 999px;
  color: #fff;
  background: var(--blue);
  font-size: 11px;
  font-weight: 720;
}

.plan-name {
  margin: 0;
  color: #4d5663;
  font-size: 15px;
  font-weight: 680;
}

.price {
  margin: 22px 0 14px;
  font-size: 62px;
  font-weight: 740;
  letter-spacing: -0.065em;
  line-height: 1;
}

.price > span {
  margin-right: 4px;
  font-size: 24px;
  vertical-align: 21px;
}

.price small {
  margin-left: 7px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 560;
  letter-spacing: 0;
}

.plan-desc,
.traffic-note {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.traffic-note {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--soft);
}

.traffic-note strong {
  color: var(--text);
}

.plan-list {
  display: grid;
  gap: 12px;
  margin: 32px 0;
  padding: 0;
  list-style: none;
}

.plan-list li {
  position: relative;
  padding-left: 25px;
  color: #48515d;
  font-size: 14px;
}

.plan-list li::before {
  position: absolute;
  top: 1px;
  left: 0;
  display: grid;
  width: 17px;
  height: 17px;
  place-items: center;
  border-radius: 50%;
  color: var(--blue);
  background: var(--soft-blue);
  font-size: 10px;
  font-weight: 800;
  content: "✓";
}

.pricing-referral-card {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) auto auto;
  align-items: center;
  gap: 22px;
  margin-top: 24px;
  padding: 22px 24px 17px;
  border: 1px solid rgba(23, 105, 224, 0.18);
  border-radius: 22px;
  background: linear-gradient(135deg, #f1f7ff, #fbfdff);
}

.referral-compact-copy {
  display: grid;
  gap: 3px;
}

.referral-compact-copy > span {
  color: var(--blue);
  font-size: 11px;
  font-weight: 740;
}

.referral-compact-copy > strong {
  font-size: 17px;
  letter-spacing: -0.025em;
}

.referral-compact-copy > small {
  max-width: 470px;
  color: var(--muted);
  font-size: 12px;
}

.referral-compact-rewards {
  display: flex;
  align-items: stretch;
  overflow: hidden;
  border: 1px solid rgba(23, 105, 224, 0.14);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.80);
}

.referral-compact-rewards > span {
  display: grid;
  min-width: 96px;
  align-content: center;
  justify-items: center;
  padding: 10px 12px;
}

.referral-compact-rewards > span + span {
  border-left: 1px solid #e5ebf3;
}

.referral-compact-rewards small {
  color: var(--muted);
  font-size: 9px;
}

.referral-compact-rewards strong {
  color: var(--blue);
  font-size: 16px;
}

.pricing-referral-card .button {
  min-height: 44px;
  padding-right: 18px;
  padding-left: 18px;
  font-size: 12px;
}

.pricing-referral-card > p {
  grid-column: 1 / -1;
  margin: -5px 0 0;
  color: #8a929d;
  font-size: 10px;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.process-item {
  min-height: 235px;
  padding: 27px;
  border-radius: var(--radius-md);
}

.process-item > span {
  color: var(--blue);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0.13em;
}

.process-item h3 {
  margin: 56px 0 9px;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.process-item p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.after-sales-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  margin-bottom: 18px;
  padding: 22px 24px;
  border: 1px solid rgba(23, 105, 224, 0.16);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #f2f7ff, #f8fbff);
}

.after-sales-icon {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border-radius: 17px;
  color: #fff;
  background: var(--blue);
  font-size: 13px;
  font-weight: 760;
}

.after-sales-card strong {
  display: block;
  margin-bottom: 4px;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.after-sales-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.after-sales-card .button {
  min-width: 112px;
}

.tutorial-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.tutorial-card {
  position: relative;
  display: grid;
  min-height: 240px;
  align-content: end;
  padding: 28px;
  overflow: hidden;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.tutorial-card::before {
  position: absolute;
  top: -60px;
  right: -45px;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(23, 105, 224, 0.14), rgba(23, 105, 224, 0));
  content: "";
}

.tutorial-card:hover {
  border-color: rgba(23, 105, 224, 0.30);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.device-name {
  position: absolute;
  top: 27px;
  left: 28px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 740;
  letter-spacing: 0.08em;
}

.tutorial-card strong {
  font-size: 23px;
  letter-spacing: -0.035em;
}

.tutorial-card small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 13px;
}

.tutorial-card i {
  margin-top: 21px;
  color: var(--blue);
  font-size: 13px;
  font-style: normal;
  font-weight: 650;
}

.contact-section {
  padding-top: 40px;
  background: #fff;
}

.contact-card {
  display: grid;
  grid-template-columns: 1fr 320px;
  align-items: center;
  gap: 80px;
  padding: clamp(42px, 7vw, 82px);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 90% 0, rgba(67, 148, 255, 0.16), transparent 26rem),
    #f4f7fb;
}

.contact-copy {
  max-width: 620px;
}

.contact-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.contact-points span {
  padding: 7px 11px;
  border: 1px solid #dce2ea;
  border-radius: 999px;
  color: #58616e;
  background: rgba(255, 255, 255, 0.62);
  font-size: 12px;
}

.qr-wrap {
  display: grid;
  justify-items: center;
  padding: 20px 20px 18px;
  border: 1px solid rgba(255, 255, 255, 0.92);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.90);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.qr-wrap img {
  width: 240px;
  aspect-ratio: 1;
  border-radius: 15px;
  object-fit: cover;
}

.qr-wrap strong {
  margin-top: 15px;
  font-size: 15px;
}

.qr-wrap small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
}

.site-footer {
  padding: 70px 0 40px;
  background: #fff;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: end;
  gap: 54px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.footer-inner p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.footer-links {
  display: flex;
  gap: 22px;
}

.copyright {
  white-space: nowrap;
}

/* Tutorial pages */
.tutorial-body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 70% 10%, rgba(23, 105, 224, 0.10), transparent 24rem),
    #f7f9fc;
}

.subpage-header {
  position: static;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.90);
}

.back-link {
  color: #505966;
  font-size: 14px;
  font-weight: 620;
  text-decoration: none;
}

.back-link:hover {
  color: var(--blue);
}

.tutorial-main {
  padding: 90px 0 110px;
}

.tutorial-hero {
  max-width: 780px;
}

.status-pill {
  display: inline-flex;
  margin-bottom: 20px;
  padding: 6px 11px;
  border-radius: 999px;
  color: var(--blue);
  background: var(--soft-blue);
  font-size: 12px;
  font-weight: 700;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 54px;
}

.guide-step {
  min-height: 225px;
  padding: 28px;
  border-radius: var(--radius-md);
}

.guide-step > span {
  color: var(--blue);
  font-size: 12px;
  font-weight: 760;
}

.guide-step h2 {
  margin: 48px 0 8px;
  font-size: 19px;
  letter-spacing: -0.025em;
}

.guide-step p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.guide-notice {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  margin-top: 18px;
  padding: 26px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
}

.guide-notice h2 {
  margin: 0 0 4px;
  font-size: 18px;
}

.guide-notice p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 980px) {
  .hero {
    min-height: auto;
  }

  .hero-layout {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    max-width: 760px;
  }

  .hero-product {
    min-height: 430px;
  }

  .product-card {
    right: 50%;
    transform: translate(50%, -50%);
  }

  .orbit-one,
  .orbit-two {
    right: 50%;
    transform: translateX(50%);
  }

  .advantage-grid,
  .process-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 660px;
    margin: 0 auto;
  }

  .pricing-referral-card {
    grid-template-columns: 1fr;
  }

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

  .price-card.featured {
    transform: none;
  }

  .contact-card {
    grid-template-columns: 1fr 280px;
    gap: 46px;
  }
}

@media (max-width: 720px) {
  .container,
  .nav-wrap {
    width: min(100% - 28px, var(--container));
  }

  .menu-toggle {
    display: block;
  }

  .menu-toggle[aria-expanded="true"] > span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] > span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle[aria-expanded="true"] > span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    top: 68px;
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    padding: 8px 14px 18px;
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 18px 32px rgba(22, 32, 51, 0.08);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 160ms ease, transform 160ms ease;
  }

  .site-nav.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 14px 10px;
    border-bottom: 1px solid #eff1f4;
    font-size: 15px;
  }

  .site-nav a:last-child {
    border-bottom: 0;
  }

  .hero {
    padding: 122px 0 64px;
  }

  .hero h1 {
    font-size: clamp(43px, 13vw, 62px);
  }

  .hero-subtitle {
    font-size: 20px;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .button {
    padding-right: 18px;
    padding-left: 18px;
  }

  .hero-product {
    min-height: 390px;
  }

  .product-card {
    right: auto;
    left: 50%;
    width: min(100%, 420px);
    padding: 26px;
    transform: translate(-50%, -50%);
  }

  .product-title {
    font-size: 34px;
  }

  .product-stats {
    gap: 4px;
  }

  .section {
    padding: 82px 0;
  }

  .section-heading {
    margin-bottom: 34px;
  }

  .section-heading h2,
  .contact-copy h2,
  .tutorial-hero h1 {
    font-size: clamp(34px, 10vw, 48px);
  }

  .section-heading > p:last-child,
  .contact-copy > p,
  .tutorial-hero > p {
    font-size: 16px;
  }

  .advantage-grid,
  .process-grid,
  .tutorial-grid,
  .guide-grid {
    grid-template-columns: 1fr;
  }

  .advantage-card,
  .process-item {
    min-height: 220px;
  }

  .advantage-card h3,
  .process-item h3 {
    margin-top: 38px;
  }

  .price-card {
    padding: 28px;
  }

  .price {
    font-size: 55px;
  }

  .tutorial-card {
    min-height: 210px;
  }

  .contact-section {
    padding-top: 22px;
  }

  .contact-card {
    grid-template-columns: 1fr;
    gap: 38px;
    padding: 38px 22px;
    border-radius: 26px;
  }

  .qr-wrap {
    width: min(100%, 320px);
    justify-self: center;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 24px;
  }

  .footer-links {
    flex-wrap: wrap;
  }

  .tutorial-main {
    padding: 70px 0 88px;
  }

  .guide-notice {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 420px) {
  .hero-actions {
    grid-template-columns: 1fr;
  }

  .product-stats strong {
    font-size: 17px;
  }

  .product-stats span {
    font-size: 10px;
  }

  .contact-points {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}

.help-home-header {
  display: grid;
  grid-template-columns: 1fr 330px;
  align-items: end;
  gap: 50px;
}

.help-home-header .section-heading {
  margin-bottom: 42px;
}

.help-search-entry {
  display: grid;
  gap: 7px;
  margin-bottom: 42px;
  padding: 20px 22px;
  border: 1px solid rgba(23, 105, 224, 0.18);
  border-radius: 18px;
  background: #fff;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease;
}

.help-search-entry:hover {
  border-color: rgba(23, 105, 224, 0.42);
  transform: translateY(-2px);
}

.help-search-entry span {
  color: var(--muted);
  font-size: 12px;
}

.help-search-entry strong {
  color: var(--blue);
  font-size: 15px;
}

.help-category-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.help-category-grid a {
  display: grid;
  min-height: 176px;
  align-content: end;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.90);
  box-shadow: 0 10px 28px rgba(22, 32, 51, 0.045);
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.help-category-grid a:hover {
  border-color: rgba(23, 105, 224, 0.30);
  box-shadow: var(--shadow-sm);
  transform: translateY(-3px);
}

.help-category-grid span {
  margin-bottom: auto;
  color: var(--blue);
  font-size: 10px;
  font-weight: 740;
  letter-spacing: 0.05em;
}

.help-category-grid strong {
  font-size: 17px;
}

.help-category-grid small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
}

.help-home-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.help-home-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.help-home-footer a,
.text-link {
  color: var(--blue);
  font-size: 13px;
  font-weight: 650;
  text-decoration: none;
}

.text-link {
  display: inline-flex;
  margin-top: 24px;
}

@media (max-width: 980px) {
  .help-category-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Streamlined homepage: one clear idea per section */
.hero {
  min-height: 720px;
  padding-bottom: 76px;
}

.hero-product {
  min-height: 450px;
}

.device-product-card .product-small {
  margin-top: 38px;
}

.device-product-card .product-title {
  max-width: 330px;
  font-size: 35px;
}

.device-selector-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  margin-top: 32px;
}

.device-selector-grid > span {
  display: grid;
  gap: 1px;
  padding: 13px 14px;
  border: 1px solid rgba(23, 105, 224, 0.10);
  border-radius: 13px;
  background: rgba(237, 244, 255, 0.65);
}

.device-selector-grid strong {
  color: #35404e;
  font-size: 13px;
}

.device-selector-grid small {
  color: var(--muted);
  font-size: 10px;
}

.device-card-note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 11px;
}

.section {
  padding-top: 94px;
  padding-bottom: 94px;
}

.pricing-section .section-heading {
  margin-bottom: 28px;
}

.plan-shared-service {
  display: flex;
  width: fit-content;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin: 0 auto 34px;
  overflow: hidden;
  border: 1px solid rgba(23, 105, 224, 0.14);
  border-radius: 999px;
  background: #f6f9fe;
}

.plan-shared-service > span,
.plan-shared-service > strong {
  padding: 9px 14px;
  font-size: 11px;
  white-space: nowrap;
}

.plan-shared-service > span {
  color: #fff;
  background: var(--blue);
  font-weight: 700;
}

.plan-shared-service > strong {
  color: #4d5866;
  font-weight: 630;
}

.plan-shared-service > strong + strong {
  border-left: 1px solid #e1e8f1;
}

.price-card {
  min-height: 445px;
}

.compact-service-section .section-heading {
  max-width: 770px;
  margin-bottom: 38px;
}

.compact-service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 15px;
}

.compact-service-card {
  min-height: 238px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.90);
  box-shadow: 0 12px 34px rgba(22, 32, 51, 0.05);
}

.compact-service-card > span {
  color: var(--blue);
  font-size: 11px;
  font-weight: 740;
}

.compact-service-card h3 {
  margin: 58px 0 9px;
  font-size: 21px;
  letter-spacing: -0.03em;
}

.compact-service-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.compact-help-grid a {
  min-height: 158px;
}

.help-quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 15px;
}

.help-quick-links span {
  color: var(--muted);
  font-size: 11px;
}

.help-quick-links a {
  color: #4e5966;
  font-size: 11px;
  font-weight: 580;
  text-decoration: none;
}

.help-quick-links a:hover {
  color: var(--blue);
}

@media (max-width: 980px) {
  .compact-service-grid {
    grid-template-columns: 1fr;
  }

  .compact-service-card {
    min-height: 0;
  }

  .compact-service-card h3 {
    margin-top: 26px;
  }
}