:root {
  --page: #f4f6f1;
  --surface: #ffffff;
  --surface-muted: #e9ede6;
  --ink: #111411;
  --muted: #5f675f;
  --line: #d8ddd5;
  --brand: #19a765;
  --brand-dark: #087342;
  --brand-soft: #d9f3e5;
  --amber: #f2a51a;
  --coral: #ee684f;
  --radius: 8px;
  --shadow: 0 16px 40px rgba(27, 39, 30, 0.08);
  --shell: min(1180px, calc(100% - 40px));
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

button {
  font: inherit;
}

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

h1,
h2,
h3,
p {
  margin-top: 0;
  text-wrap: pretty;
}

h1,
h2,
h3 {
  line-height: 1.14;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 1000;
  padding: 10px 14px;
  background: var(--ink);
  color: #fff;
  transform: translateY(-140%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  background: rgba(244, 246, 241, 0.86);
  backdrop-filter: blur(16px);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  border-color: var(--line);
  box-shadow: 0 6px 20px rgba(27, 39, 30, 0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  font-size: 13px;
}

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

.desktop-nav {
  display: flex;
  gap: 32px;
  margin-left: auto;
  color: #3f4740;
  font-size: 14px;
  font-weight: 600;
}

.desktop-nav a,
.footer-links a {
  transition: color 160ms ease;
}

.desktop-nav a:hover,
.footer-links a:hover {
  color: var(--brand-dark);
}

.header-cta {
  min-height: 42px;
  margin-left: 34px;
  padding: 8px 16px;
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  font-weight: 650;
}

.menu-button,
.mobile-nav {
  display: none;
}

.hero {
  display: grid;
  min-height: 530px;
  grid-template-columns: minmax(0, 1.05fr) minmax(420px, 0.95fr);
  align-items: center;
  gap: 68px;
  padding-block: 30px 40px;
}

.eyebrow {
  margin-bottom: 18px;
  color: var(--brand-dark);
  font-size: 12px;
  font-weight: 750;
}

.hero h1 {
  max-width: 700px;
  margin-bottom: 26px;
  font-size: 64px;
  font-weight: 750;
}

.hero-text {
  max-width: 570px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: 19px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 22px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 11px 18px;
  cursor: pointer;
  font-weight: 650;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

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

.button:active {
  transform: translateY(0);
}

.button-primary {
  background: var(--brand);
  color: #062b19;
}

.button-primary:hover {
  background: #12bb6d;
}

.button-secondary {
  width: 100%;
  border-color: #bdc5bb;
  background: transparent;
  color: var(--ink);
}

.button-secondary:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: #fff;
}

.button-muted,
.button-muted:hover {
  border-color: var(--line);
  background: #f2f4f0;
  color: #7b837b;
  cursor: default;
  transform: none;
}

.hero-note {
  color: var(--muted);
  font-size: 14px;
}

.product-orbit {
  position: relative;
  width: min(100%, 420px);
  aspect-ratio: 1;
  justify-self: end;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.product-orbit::before,
.product-orbit::after {
  position: absolute;
  inset: 14%;
  border: 1px dashed #cbd1c8;
  border-radius: 50%;
  content: "";
}

.product-orbit::after {
  inset: 32%;
  border-style: solid;
}

.orbit-caption {
  position: absolute;
  inset: 36%;
  z-index: 2;
  display: grid;
  place-content: center;
  text-align: center;
}

.orbit-caption span {
  font-size: 48px;
  font-weight: 780;
  line-height: 1;
}

.orbit-caption small {
  margin-top: 8px;
  color: var(--muted);
  font-size: 10px;
}

.orbit-icon {
  position: absolute;
  z-index: 3;
  display: grid;
  width: 84px;
  aspect-ratio: 1;
  place-items: center;
  overflow: hidden;
  border: 5px solid var(--page);
  border-radius: 22px;
  box-shadow: var(--shadow);
  font-size: 34px;
  font-weight: 800;
  animation: float 5s ease-in-out infinite;
}

.orbit-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.orbit-wordbar {
  top: 0;
  left: 43%;
  background: var(--amber);
  color: #2b1a00;
}

.orbit-media {
  top: 24%;
  right: -5%;
  animation-delay: -1s;
}

.orbit-reader {
  right: 8%;
  bottom: 7%;
  animation-delay: -2s;
}

.orbit-reader img,
.reader-crop img {
  transform: scale(1.17);
}

.orbit-imprint {
  bottom: -5%;
  left: 28%;
  animation-delay: -3s;
}

.orbit-compress {
  bottom: 16%;
  left: -5%;
  animation-delay: -4s;
}

.orbit-image {
  top: 18%;
  left: 0;
  animation-delay: -2.5s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-7px); }
}

.products-section {
  padding-block: 74px 112px;
  background: var(--surface);
}

.section-heading {
  margin-bottom: 46px;
}

.section-heading h2,
.why-intro h2,
.questions-intro h2 {
  margin-bottom: 0;
  font-size: 42px;
}

.products-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.filter {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 14px;
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
}

.filter:hover,
.filter.is-active {
  border-color: var(--ink);
  background: var(--ink);
  color: #fff;
}

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

.product-card {
  display: flex;
  min-height: 520px;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--surface);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.product-card:hover {
  border-color: #b3bbb1;
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.product-card[hidden] {
  display: none;
}

.product-topline {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 28px;
}

.product-icon {
  width: 68px;
  aspect-ratio: 1;
  flex: 0 0 auto;
  overflow: hidden;
  border-radius: 17px;
}

.image-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.icon-letter {
  display: grid;
  place-items: center;
  font-size: 30px;
  font-weight: 800;
}

.icon-wordbar {
  background: var(--amber);
  color: #2b1a00;
}

.availability {
  padding: 5px 9px;
  border-radius: 4px;
  background: #edf0eb;
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
}

.availability-live {
  background: var(--brand-soft);
  color: var(--brand-dark);
}

.product-copy {
  min-height: 168px;
}

.product-kicker {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

.product-copy h3 {
  margin-bottom: 14px;
  font-size: 28px;
}

.product-copy > p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.feature-list {
  display: grid;
  gap: 7px;
  margin: 22px 0 26px;
  padding: 0;
  list-style: none;
  color: #3c443d;
  font-size: 14px;
}

.feature-list li::before {
  margin-right: 9px;
  color: var(--brand);
  content: "•";
}

.product-card .button {
  margin-top: auto;
}

.why-section {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1.25fr);
  gap: 100px;
  padding-block: 118px;
}

.why-intro {
  position: sticky;
  top: 112px;
  align-self: start;
}

.principles {
  border-top: 1px solid #cbd1c8;
}

.principle {
  display: grid;
  grid-template-columns: 46px 180px minmax(0, 1fr);
  gap: 22px;
  align-items: baseline;
  border-bottom: 1px solid #cbd1c8;
  padding-block: 30px;
}

.principle-number {
  color: var(--brand-dark);
  font-size: 12px;
  font-weight: 750;
}

.principle h3 {
  margin: 0;
  font-size: 21px;
}

.principle p {
  margin: 0;
  color: var(--muted);
}

.questions-section {
  padding-block: 110px;
  background: #151a16;
  color: #f3f5f1;
}

.questions-section .eyebrow {
  color: #6fe0a4;
}

.questions-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 100px;
}

.faq-list {
  border-top: 1px solid #3e4640;
}

.faq-list details {
  border-bottom: 1px solid #3e4640;
}

.faq-list summary {
  position: relative;
  padding: 24px 46px 24px 0;
  cursor: pointer;
  font-size: 18px;
  font-weight: 650;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  position: absolute;
  top: 20px;
  right: 2px;
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  color: #9ca49d;
  content: "+";
  font-size: 24px;
  font-weight: 400;
  transition: transform 180ms ease;
}

.faq-list details[open] summary::after {
  transform: rotate(45deg);
}

.faq-list details p {
  max-width: 620px;
  margin-bottom: 24px;
  color: #acb4ad;
}

.site-footer {
  padding-block: 68px 24px;
  background: var(--surface);
}

.footer-main {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 32px;
  padding-bottom: 56px;
}

.footer-main p {
  margin: 18px 0 0;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 30px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: 20px;
  color: #7b837b;
  font-size: 12px;
}

.privacy-main {
  min-height: calc(100vh - 230px);
}

.privacy-hero {
  padding-block: 82px 64px;
  border-bottom: 1px solid var(--line);
}

.privacy-hero h1 {
  max-width: 820px;
  margin-bottom: 20px;
  font-size: 52px;
}

.privacy-lead {
  max-width: 680px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
}

.privacy-list-section {
  padding-block: 70px 110px;
  background: var(--surface);
}

.privacy-list {
  border-top: 1px solid var(--line);
}

.privacy-list-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  padding-block: 28px;
  border-bottom: 1px solid var(--line);
}

.privacy-product-icon {
  width: 64px;
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: 14px;
}

.privacy-product-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.privacy-list-copy h2 {
  margin-bottom: 7px;
  font-size: 24px;
}

.privacy-list-copy p,
.privacy-date {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
}

.privacy-list-action {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 15px;
  font-size: 14px;
  font-weight: 650;
  white-space: nowrap;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.privacy-list-action:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: #fff;
}

.privacy-title-row {
  display: flex;
  align-items: center;
  gap: 20px;
}

.privacy-title-row .privacy-product-icon {
  width: 78px;
  border-radius: 18px;
}

.privacy-title-row h1 {
  margin-bottom: 8px;
}

.privacy-policy-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 720px);
  justify-content: center;
  gap: 76px;
  padding-block: 68px 112px;
}

.privacy-toc {
  position: sticky;
  top: 106px;
  align-self: start;
}

.privacy-toc strong {
  display: block;
  margin-bottom: 12px;
  font-size: 13px;
}

.privacy-toc a {
  display: block;
  padding-block: 6px;
  color: var(--muted);
  font-size: 14px;
}

.privacy-toc a:hover {
  color: var(--brand-dark);
}

.policy-content {
  min-width: 0;
}

.policy-intro {
  margin-bottom: 46px;
  color: #3f4740;
  font-size: 18px;
}

.policy-section {
  scroll-margin-top: 106px;
  padding-block: 4px 36px;
}

.policy-section + .policy-section {
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.policy-section h2 {
  margin-bottom: 18px;
  font-size: 27px;
}

.policy-section p,
.policy-section li {
  color: #404740;
}

.policy-section ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 22px;
}

.policy-section code {
  padding: 2px 5px;
  border-radius: 4px;
  background: var(--surface-muted);
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

.policy-contact-link {
  color: var(--brand-dark);
  font-weight: 650;
  overflow-wrap: anywhere;
  text-decoration: underline;
  text-underline-offset: 3px;
}

:focus-visible {
  outline: 3px solid #38c980;
  outline-offset: 3px;
}

@media (max-width: 980px) {
  .desktop-nav,
  .header-cta {
    display: none;
  }

  .menu-button {
    display: grid;
    width: 44px;
    height: 44px;
    margin-left: auto;
    place-content: center;
    gap: 5px;
    border: 0;
    background: transparent;
    cursor: pointer;
  }

  .menu-button span {
    width: 21px;
    height: 2px;
    background: var(--ink);
    transition: transform 180ms ease, opacity 180ms ease;
  }

  .menu-button[aria-expanded="true"] span:first-child {
    transform: translateY(7px) rotate(45deg);
  }

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

  .menu-button[aria-expanded="true"] span:last-child {
    transform: translateY(-7px) rotate(-45deg);
  }

  .mobile-nav {
    position: fixed;
    inset: 76px 0 auto;
    display: grid;
    padding: 12px 20px 24px;
    border-bottom: 1px solid var(--line);
    background: var(--page);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity 180ms ease, transform 180ms ease;
  }

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

  .mobile-nav a {
    min-height: 52px;
    padding-block: 12px;
    border-bottom: 1px solid var(--line);
    font-weight: 650;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 72px;
    padding-block: 80px 86px;
  }

  .product-orbit {
    width: min(76vw, 500px);
    justify-self: center;
  }

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

  .why-section,
  .questions-layout {
    grid-template-columns: 1fr;
    gap: 52px;
  }

  .why-intro {
    position: static;
  }

  .privacy-policy-layout {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .privacy-toc {
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: 4px 20px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--line);
  }

  .privacy-toc strong {
    width: 100%;
  }
}

@media (max-width: 700px) {
  :root {
    --shell: min(100% - 28px, 580px);
  }

  .header-inner {
    height: 68px;
  }

  .mobile-nav {
    inset-block-start: 68px;
  }

  .hero {
    gap: 32px;
    padding-block: 38px 48px;
  }

  .hero h1 {
    margin-bottom: 20px;
    font-size: 40px;
  }

  .hero-text {
    margin-bottom: 24px;
    font-size: 17px;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .button-primary {
    width: 100%;
  }

  .product-orbit {
    width: min(68vw, 260px);
  }

  .orbit-icon {
    width: 54px;
    border-width: 3px;
    border-radius: 14px;
    font-size: 22px;
  }

  .orbit-caption span {
    font-size: 36px;
  }

  .orbit-caption small {
    display: none;
  }

  .products-section,
  .why-section,
  .questions-section {
    padding-block: 62px;
  }

  .products-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .section-heading h2,
  .why-intro h2,
  .questions-intro h2 {
    font-size: 34px;
  }

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

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

  .product-card {
    min-height: 500px;
  }

  .principle {
    grid-template-columns: 36px 1fr;
  }

  .principle p {
    grid-column: 2;
  }

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

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

  .privacy-hero {
    padding-block: 52px 44px;
  }

  .privacy-hero h1 {
    font-size: 38px;
  }

  .privacy-list-section {
    padding-block: 48px 72px;
  }

  .privacy-list-item {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 18px;
  }

  .privacy-list-action {
    grid-column: 1 / -1;
    justify-content: center;
  }

  .privacy-title-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .privacy-title-row .privacy-product-icon {
    width: 68px;
  }

  .privacy-policy-layout {
    gap: 38px;
    padding-block: 44px 76px;
  }

  .privacy-toc {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2px 14px;
  }

  .privacy-toc strong {
    grid-column: 1 / -1;
  }

  .policy-intro {
    margin-bottom: 34px;
    font-size: 17px;
  }

  .policy-section h2 {
    font-size: 24px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}