@charset "UTF-8";

:root {
  --ink: #11120f;
  --ink-soft: #25261f;
  --paper: #fffaf0;
  --paper-deep: #f4eddd;
  --white: #ffffff;
  --yellow: #ffd64d;
  --yellow-strong: #ffbe18;
  --coral: #ff674e;
  --green: #17815d;
  --muted: #66706b;
  --line: #d8cfbc;
  --max: 1200px;
  --header-height: 76px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  min-width: 320px;
  margin: 0;
  padding-top: var(--header-height);
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

body.menu-open {
  overflow: hidden;
}

button,
input,
a {
  font: inherit;
}

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

button {
  color: inherit;
}

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

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

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

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

button,
summary {
  cursor: pointer;
}

.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;
}

.page-top {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
}

.site-header {
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(255, 250, 240, 0.98);
  border-bottom: 1px solid var(--ink);
  transform: translateZ(0);
  backface-visibility: hidden;
}

.header-inner {
  display: flex;
  align-items: center;
  width: min(calc(100% - 40px), var(--max));
  height: 100%;
  margin: 0 auto;
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 11px;
}

.brand img,
.footer-brand img {
  width: 47px;
  height: 47px;
  object-fit: contain;
}

.brand-copy,
.footer-brand > span {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-copy strong,
.footer-brand strong {
  font-size: 20px;
}

.brand-copy span,
.footer-brand small {
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.site-nav {
  margin-left: auto;
}

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

.site-nav a {
  position: relative;
  display: block;
  padding: 26px 0 24px;
  font-size: 14px;
  font-weight: 700;
}

.site-nav a::after {
  position: absolute;
  right: 50%;
  bottom: 17px;
  left: 50%;
  height: 3px;
  background: var(--yellow-strong);
  content: "";
  transition: right 0.2s ease, left 0.2s ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a.is-active::after {
  right: 0;
  left: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  margin-left: 34px;
}

.desktop-download,
.mobile-download,
.primary-link,
.download-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 800;
  white-space: nowrap;
}

.desktop-download {
  min-width: 170px;
  min-height: 44px;
  padding: 10px 18px;
  color: var(--ink);
  background: var(--yellow);
  border: 1px solid var(--ink);
  border-radius: 5px;
  box-shadow: 4px 4px 0 var(--ink);
}

.desktop-download:hover,
.desktop-download:focus-visible {
  color: var(--white);
  background: var(--ink);
}

.desktop-download:hover .icon-download,
.desktop-download:focus-visible .icon-download,
.primary-link:hover .icon-download,
.primary-link:focus-visible .icon-download {
  background-image: url("../icons/download-light.svg");
}

.mobile-download,
.menu-toggle {
  display: none;
}

.hero {
  position: relative;
  min-height: 700px;
  overflow: hidden;
  background-color: var(--paper);
  background-image: linear-gradient(rgba(17, 18, 15, 0.055) 1px, transparent 1px), linear-gradient(90deg, rgba(17, 18, 15, 0.055) 1px, transparent 1px);
  background-size: 44px 44px;
  border-bottom: 1px solid var(--ink);
}

.hero::before {
  position: absolute;
  top: 0;
  right: 0;
  width: 36%;
  height: 100%;
  background: var(--yellow);
  border-left: 1px solid var(--ink);
  content: "";
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(480px, 1.05fr);
  align-items: center;
  gap: 74px;
  width: min(calc(100% - 40px), var(--max));
  min-height: 700px;
  margin: 0 auto;
  padding: 70px 0;
}

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

.eyebrow,
.section-index,
.mini-label,
.download-copy > span {
  display: block;
  color: var(--coral);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.2em;
  line-height: 1.4;
}

.hero h1 {
  margin-top: 18px;
  font-size: clamp(70px, 7vw, 112px);
  line-height: 0.94;
  letter-spacing: -0.08em;
  white-space: nowrap;
}

.hero-slogan {
  margin-top: 28px;
  font-size: clamp(27px, 2.3vw, 38px);
  font-weight: 900;
  line-height: 1.3;
}

.hero-intro {
  max-width: 620px;
  margin-top: 22px;
  color: #4e554f;
  line-height: 2;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-tags span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 8px 14px;
  background: var(--white);
  border: 1px solid var(--ink);
  border-radius: 5px;
  font-size: 14px;
  font-weight: 700;
}

.hero-download {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  margin-top: 30px;
}

.primary-link {
  min-width: 220px;
  min-height: 56px;
  padding: 12px 25px;
  color: var(--white);
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 5px;
}

.primary-link:hover,
.primary-link:focus-visible {
  background: var(--coral);
  border-color: var(--coral);
}

.age-label {
  display: block;
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
}

.discovery-desk {
  width: 100%;
  max-width: 540px;
  margin-left: auto;
  background: var(--white);
  border: 1px solid var(--ink);
  border-radius: 5px;
  box-shadow: 18px 18px 0 rgba(17, 18, 15, 0.12);
}

.desk-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 46px;
  padding: 10px 20px;
  color: var(--white);
  background: var(--ink);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.desk-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #bff9c7;
  letter-spacing: 0;
}

.desk-status i {
  width: 8px;
  height: 8px;
  background: #53dc7c;
  border-radius: 50%;
}

.desk-body {
  padding: 25px;
}

.desk-heading,
.output-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.desk-heading h2 {
  margin-top: 4px;
  font-size: 28px;
  line-height: 1.3;
}

.desk-random {
  min-height: 38px;
  padding: 7px 13px;
  background: var(--paper);
  border: 1px solid var(--ink);
  border-radius: 5px;
  font-size: 13px;
  font-weight: 700;
}

.desk-random:hover,
.desk-random:focus-visible {
  color: var(--white);
  background: var(--ink);
}

.desk-search {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  margin-top: 19px;
  padding: 0 15px;
  background: #f4f5f0;
  border: 1px solid #dadccf;
  border-radius: 5px;
}

.desk-search input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  font-size: 14px;
}

.desk-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 14px;
  border: 1px solid var(--ink);
  border-radius: 5px;
  overflow: hidden;
}

.desk-tabs button {
  min-height: 40px;
  background: var(--white);
  border: 0;
  border-right: 1px solid var(--ink);
  font-size: 13px;
  font-weight: 700;
}

.desk-tabs button:last-child {
  border-right: 0;
}

.desk-tabs button.is-active {
  background: var(--yellow);
}

.desk-feature {
  display: grid;
  grid-template-columns: 118px 1fr;
  gap: 18px;
  margin-top: 18px;
  padding: 16px;
  color: var(--white);
  background: var(--ink);
  border-radius: 5px;
}

.desk-feature figure {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 118px;
  height: 154px;
  padding: 7px;
  background: var(--white);
  border-radius: 5px;
}

.desk-feature img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.desk-feature > div {
  align-self: center;
}

.feature-note,
.feature-state {
  display: block;
  color: var(--yellow);
  font-size: 12px;
  font-weight: 700;
}

.desk-feature h3 {
  margin-top: 5px;
  font-size: 23px;
}

.desk-feature p {
  margin: 9px 0 13px;
  color: #e5e2d9;
  font-size: 13px;
  line-height: 1.7;
}

.desk-queue {
  margin-top: 10px;
  border: 1px solid var(--line);
  border-radius: 5px;
}

.desk-queue article {
  display: grid;
  grid-template-columns: 42px 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}

.desk-queue article:last-child {
  border-bottom: 0;
}

.desk-queue img {
  width: 42px;
  height: 52px;
  object-fit: contain;
  background: var(--paper-deep);
  border-radius: 5px;
}

.desk-queue span {
  display: flex;
  flex-direction: column;
}

.desk-queue strong {
  font-size: 14px;
}

.desk-queue small {
  color: var(--muted);
  font-size: 12px;
}

.desk-queue button {
  min-width: 54px;
  min-height: 34px;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--ink);
  border-radius: 5px;
  font-size: 12px;
  font-weight: 700;
}

.desk-queue button.is-active {
  background: var(--yellow);
}

.section-inner {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  padding: 110px 0;
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 48px;
}

.section-heading h2 {
  margin-top: 7px;
  font-size: clamp(42px, 4.3vw, 66px);
  line-height: 1.08;
  letter-spacing: -0.05em;
}

.section-heading > p {
  max-width: 490px;
  padding-bottom: 7px;
  color: var(--muted);
}

.signal-section {
  background: var(--white);
  border-bottom: 1px solid var(--ink);
}

.signal-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  border: 1px solid var(--ink);
  border-radius: 5px;
  overflow: hidden;
}

.signal-controls {
  padding: 32px;
  background: var(--ink);
  color: var(--white);
}

.signal-block {
  padding: 0 0 24px;
  margin-bottom: 24px;
  border-bottom: 1px solid #45473e;
}

.control-label {
  display: block;
  margin-bottom: 12px;
  color: var(--yellow);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.choice-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.choice-group button {
  min-height: 42px;
  color: var(--white);
  background: transparent;
  border: 1px solid #77796f;
  border-radius: 5px;
  font-size: 13px;
}

.choice-group button.is-active {
  color: var(--ink);
  background: var(--yellow);
  border-color: var(--yellow);
  font-weight: 800;
}

.length-range {
  width: 100%;
  accent-color: var(--yellow);
}

.range-labels {
  display: flex;
  justify-content: space-between;
  color: #c4c5bf;
  font-size: 12px;
}

.signal-submit {
  width: 100%;
  min-height: 52px;
  background: var(--yellow);
  border: 1px solid var(--yellow);
  border-radius: 5px;
  font-weight: 900;
}

.signal-submit:hover,
.signal-submit:focus-visible {
  color: var(--white);
  background: var(--coral);
  border-color: var(--coral);
}

.signal-output {
  padding: 32px;
  background: var(--paper);
}

.output-head {
  align-items: center;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.output-head span {
  color: var(--muted);
  font-size: 13px;
}

.output-head strong {
  font-size: 18px;
}

.output-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 22px;
}

.output-cards article {
  min-width: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 5px;
  overflow: hidden;
}

.output-cards img {
  width: 100%;
  height: 220px;
  padding: 10px;
  object-fit: contain;
  background: #f4f0e5;
}

.output-cards article > div {
  padding: 15px;
}

.output-cards span,
.output-cards p {
  color: var(--muted);
  font-size: 12px;
}

.output-cards h3 {
  margin: 3px 0;
  font-size: 18px;
}

.route-section {
  background: var(--yellow);
  border-bottom: 1px solid var(--ink);
}

.route-board {
  display: grid;
  grid-template-columns: 260px 1fr;
  border: 1px solid var(--ink);
  border-radius: 5px;
  overflow: hidden;
}

.route-days {
  display: flex;
  flex-direction: column;
  background: var(--ink);
}

.route-days button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  padding: 15px 22px;
  color: var(--white);
  background: transparent;
  border: 0;
  border-bottom: 1px solid #44463e;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.route-days button:last-child {
  border-bottom: 0;
}

.route-days span {
  font-size: 14px;
  letter-spacing: 0;
}

.route-days button.is-active {
  color: var(--ink);
  background: var(--white);
}

.route-list {
  padding: 20px 26px;
  background: var(--white);
}

.route-list article {
  display: grid;
  grid-template-columns: 68px 60px 1fr auto;
  align-items: center;
  gap: 17px;
  min-height: 92px;
  border-bottom: 1px solid var(--line);
}

.route-list article:last-child {
  border-bottom: 0;
}

.route-time {
  color: var(--coral);
  font-size: 13px;
  font-weight: 900;
}

.route-list img {
  width: 60px;
  height: 70px;
  object-fit: contain;
  background: var(--paper-deep);
  border-radius: 5px;
}

.route-list h3 {
  font-size: 17px;
}

.route-list p {
  color: var(--muted);
  font-size: 12px;
}

.route-list button {
  min-width: 76px;
  min-height: 36px;
  background: var(--paper);
  border: 1px solid var(--ink);
  border-radius: 5px;
  font-size: 12px;
  font-weight: 700;
}

.route-list button.is-active {
  background: var(--yellow);
}

.screens-section {
  background: #f0ede5;
  border-bottom: 1px solid var(--ink);
}

.screen-track {
  display: grid;
  grid-template-columns: repeat(4, 250px);
  justify-content: space-between;
  gap: 18px;
  overflow-x: auto;
  padding: 2px 2px 18px;
  scrollbar-color: var(--coral) #d9d2c3;
  scrollbar-width: thin;
}

.screen-card {
  width: 250px;
  flex: 0 0 250px;
  background: var(--white);
  border: 1px solid var(--ink);
  border-radius: 5px;
  overflow: hidden;
}

.screen-image {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 250px;
  height: 450px;
  background: var(--white);
  border-bottom: 1px solid var(--ink);
  overflow: hidden;
}

.screen-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.screen-card figcaption {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 5px 12px;
  min-height: 92px;
  padding: 15px;
}

.screen-card figcaption span {
  grid-row: 1 / 3;
  color: var(--coral);
  font-size: 14px;
  font-weight: 900;
}

.screen-card figcaption strong {
  font-size: 17px;
}

.screen-card figcaption small {
  color: var(--muted);
  font-size: 12px;
}

.guide-section {
  color: var(--white);
  background: var(--ink);
  border-bottom: 1px solid #3c3d37;
}

.guide-heading > p {
  color: #c4c6be;
}

.faq-list {
  border-top: 1px solid #71736b;
}

.faq-item {
  border-bottom: 1px solid #53554f;
}

.faq-item > button {
  display: grid;
  grid-template-columns: 42px 1fr 24px;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 78px;
  padding: 16px 20px;
  color: var(--white);
  text-align: left;
  background: transparent;
  border: 0;
}

.faq-item > button span {
  color: var(--yellow);
  font-size: 12px;
  font-weight: 900;
}

.faq-item > button strong {
  font-size: 16px;
}

.faq-item > button i,
.details-state {
  position: relative;
  display: block;
  width: 18px;
  height: 18px;
}

.faq-item > button i::before,
.faq-item > button i::after,
.details-state::before,
.details-state::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 1px;
  background: currentColor;
  content: "";
  transform: translate(-50%, -50%);
}

.faq-item > button i::after,
.details-state::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item > button[aria-expanded="true"] i::after,
.official-site[open] .details-state::after {
  display: none;
}

.faq-answer {
  padding: 0 62px 24px 74px;
  color: #d3d4ce;
}

.official-site {
  margin-top: 20px;
  color: var(--ink);
  background: var(--yellow);
  border: 1px solid var(--yellow);
  border-radius: 5px;
}

.official-site summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 70px;
  padding: 14px 22px;
  font-weight: 800;
  list-style: none;
}

.official-site summary::-webkit-details-marker {
  display: none;
}

.official-site summary > span {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.official-site > p {
  padding: 0 22px 20px 54px;
}

.official-site a {
  text-decoration: underline;
}

.voices-section {
  background: var(--paper);
  border-bottom: 1px solid var(--ink);
}

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

.voice-card {
  display: flex;
  flex-direction: column;
  min-height: 290px;
  padding: 25px;
  background: var(--white);
  border: 1px solid var(--ink);
  border-top: 6px solid var(--yellow);
  border-radius: 5px;
}

.voice-user {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  align-items: center;
  gap: 11px;
}

.voice-user strong {
  font-size: 15px;
}

.voice-user span {
  color: var(--coral);
  font-size: 13px;
  font-weight: 900;
}

.voice-card > p {
  margin-top: 22px;
  line-height: 1.9;
}

.voice-card time {
  display: block;
  margin-top: auto;
  padding-top: 20px;
  color: var(--muted);
  font-size: 12px;
  text-align: right;
}

.download-section {
  padding: 70px 20px;
  background: var(--coral);
}

.download-inner {
  display: grid;
  grid-template-columns: 190px 1fr 255px;
  align-items: stretch;
  width: min(100%, var(--max));
  margin: 0 auto;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--ink);
  border-radius: 5px;
  overflow: hidden;
}

.download-number {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 26px 34px;
  background: var(--yellow);
  border-right: 1px dashed var(--ink);
}

.download-number span {
  font-size: 58px;
  font-weight: 900;
  line-height: 1;
}

.download-number small {
  margin-top: 8px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.download-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 32px 42px;
}

.download-copy h2 {
  margin-top: 4px;
  font-size: 30px;
  line-height: 1.3;
}

.download-copy p {
  margin-top: 8px;
  color: var(--muted);
}

.download-link {
  min-height: 170px;
  padding: 25px;
  color: var(--white);
  background: var(--ink);
  border-left: 1px solid var(--ink);
  font-size: 18px;
}

.download-link:hover,
.download-link:focus-visible {
  color: var(--ink);
  background: var(--yellow);
}

.download-link:hover .icon-download,
.download-link:focus-visible .icon-download {
  background-image: url("../icons/download.svg");
}

.site-footer {
  color: var(--white);
  background: var(--ink);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 22px 45px;
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  padding: 54px 0 26px;
}

.footer-brand small {
  color: #b6b9b1;
}

.footer-nav ul {
  display: flex;
  gap: 28px;
}

.footer-nav a {
  font-size: 13px;
}

.footer-nav a:hover,
.footer-nav a:focus-visible {
  color: var(--yellow);
}

.footer-inner > p {
  grid-column: 1 / -1;
  padding-top: 22px;
  color: #b6b9b1;
  border-top: 1px solid #494b45;
  font-size: 12px;
  text-align: center;
}

.back-top {
  position: fixed;
  z-index: 900;
  right: 25px;
  bottom: 25px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  opacity: 0;
  visibility: hidden;
  background: var(--yellow);
  border: 1px solid var(--ink);
  border-radius: 50%;
  box-shadow: 3px 3px 0 var(--ink);
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.back-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.icon-menu,
.icon-download,
.icon-search,
.icon-shelf,
.icon-bell,
.icon-globe,
.icon-avatar,
.icon-top {
  display: inline-block;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

.icon-menu {
  background-image: url("../icons/menu.svg");
}

.icon-download {
  background-image: url("../icons/download.svg");
}

.primary-link .icon-download,
.download-link .icon-download {
  background-image: url("../icons/download-light.svg");
}

.icon-search {
  background-image: url("../icons/search.svg");
}

.icon-shelf {
  background-image: url("../icons/shelf.svg");
}

.icon-bell {
  background-image: url("../icons/bell.svg");
}

.icon-globe {
  background-image: url("../icons/globe.svg");
}

.icon-avatar {
  width: 44px;
  height: 44px;
  background-color: var(--yellow);
  background-image: url("../icons/avatar.svg");
  background-size: 25px;
  border: 1px solid var(--ink);
  border-radius: 50%;
}

.icon-top {
  width: 22px;
  height: 22px;
  background-image: url("../icons/top.svg");
}

*:focus-visible {
  outline: 3px solid var(--coral);
  outline-offset: 3px;
}

@media (max-width: 1080px) {
  .site-nav ul {
    gap: 20px;
  }

  .desktop-download {
    min-width: auto;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
    gap: 35px;
  }

  .hero h1 {
    font-size: 76px;
  }

  .screen-track {
    justify-content: start;
  }
}

@media (max-width: 900px) {
  :root {
    --header-height: 66px;
  }

  .header-inner {
    width: calc(100% - 28px);
  }

  .brand img {
    width: 40px;
    height: 40px;
  }

  .brand-copy strong {
    font-size: 16px;
  }

  .brand-copy span {
    margin-top: 3px;
    font-size: 12px;
  }

  .site-nav {
    position: fixed;
    z-index: 999;
    top: var(--header-height);
    right: 0;
    left: 0;
    display: none;
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
    margin: 0;
    padding: 16px 20px 24px;
    background: var(--paper);
    border-bottom: 1px solid var(--ink);
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav ul {
    display: block;
  }

  .site-nav li {
    border-bottom: 1px solid var(--line);
  }

  .site-nav a {
    padding: 15px 4px;
  }

  .site-nav a::after {
    display: none;
  }

  .header-actions {
    gap: 8px;
    margin-left: auto;
  }

  .desktop-download {
    display: none;
  }

  .mobile-download,
  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .mobile-download {
    min-height: 40px;
    padding: 8px 13px;
    color: var(--ink);
    background: var(--yellow);
    border: 1px solid var(--ink);
    border-radius: 5px;
    font-size: 13px;
  }

  .menu-toggle {
    width: 40px;
    height: 40px;
    padding: 0;
    background: var(--white);
    border: 1px solid var(--ink);
    border-radius: 5px;
  }

  .hero::before {
    top: auto;
    bottom: 0;
    width: 100%;
    height: 43%;
    border-top: 1px solid var(--ink);
    border-left: 0;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 50px;
    min-height: 0;
    padding: 70px 0 80px;
  }

  .hero-copy {
    max-width: 720px;
    text-align: center;
  }

  .hero-tags {
    justify-content: center;
  }

  .hero-download {
    align-items: center;
  }

  .discovery-desk {
    max-width: 680px;
    margin: 0 auto;
  }

  .signal-layout,
  .route-board {
    grid-template-columns: 1fr;
  }

  .signal-controls {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }

  .signal-block {
    margin: 0;
  }

  .signal-submit {
    align-self: end;
  }

  .route-days {
    flex-direction: row;
    overflow-x: auto;
  }

  .route-days button {
    flex: 1 0 120px;
    border-right: 1px solid #44463e;
    border-bottom: 0;
  }

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

  .download-inner {
    grid-template-columns: 160px 1fr;
  }

  .download-link {
    grid-column: 1 / -1;
    min-height: 70px;
    border-top: 1px solid var(--ink);
    border-left: 0;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .header-inner,
  .hero-inner,
  .section-inner,
  .footer-inner {
    width: calc(100% - 28px);
  }

  .brand {
    gap: 7px;
  }

  .brand img {
    width: 36px;
    height: 36px;
  }

  .brand-copy strong {
    font-size: 14px;
  }

  .brand-copy span {
    font-size: 12px;
  }

  .mobile-download {
    min-height: 38px;
    padding: 7px 10px;
    font-size: 12px;
  }

  .menu-toggle {
    width: 38px;
    height: 38px;
  }

  .hero-inner {
    padding: 58px 0 68px;
  }

  .hero h1 {
    margin-top: 14px;
    font-size: clamp(53px, 18vw, 74px);
  }

  .hero-slogan {
    margin-top: 22px;
    font-size: 26px;
  }

  .hero-intro {
    margin-top: 18px;
    line-height: 1.85;
  }

  .hero-tags {
    gap: 7px;
    margin-top: 23px;
  }

  .hero-tags span {
    padding: 7px 10px;
    font-size: 12px;
  }

  .primary-link {
    width: 100%;
  }

  .discovery-desk {
    width: 100%;
    box-shadow: 8px 8px 0 rgba(17, 18, 15, 0.12);
  }

  .desk-body {
    padding: 17px;
  }

  .desk-heading h2 {
    font-size: 23px;
  }

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

  .desk-tabs button:nth-child(2) {
    border-right: 0;
  }

  .desk-tabs button:nth-child(-n + 2) {
    border-bottom: 1px solid var(--ink);
  }

  .desk-feature {
    grid-template-columns: 88px 1fr;
    gap: 13px;
    padding: 13px;
    text-align: left;
  }

  .desk-feature figure {
    width: 88px;
    height: 128px;
  }

  .desk-feature h3 {
    font-size: 19px;
  }

  .desk-queue article {
    grid-template-columns: 38px 1fr auto;
    gap: 9px;
    padding: 9px;
    text-align: left;
  }

  .desk-queue img {
    width: 38px;
    height: 48px;
  }

  .section-inner {
    padding: 76px 0;
  }

  .section-heading {
    display: block;
    margin-bottom: 32px;
    text-align: center;
  }

  .section-heading h2 {
    font-size: 42px;
  }

  .section-heading > p {
    margin: 15px auto 0;
    padding: 0;
  }

  .signal-controls {
    display: block;
    padding: 22px 17px;
  }

  .signal-block {
    margin-bottom: 22px;
  }

  .signal-output {
    padding: 22px 17px;
  }

  .output-head {
    display: block;
  }

  .output-head strong {
    display: block;
    margin-top: 6px;
  }

  .output-cards {
    grid-template-columns: 1fr;
  }

  .output-cards article {
    display: grid;
    grid-template-columns: 110px 1fr;
    align-items: center;
  }

  .output-cards img {
    width: 110px;
    height: 150px;
  }

  .route-list {
    padding: 8px 14px;
  }

  .route-list article {
    grid-template-columns: 46px 48px 1fr;
    gap: 10px;
    min-height: 94px;
  }

  .route-list img {
    width: 48px;
    height: 62px;
  }

  .route-list button {
    grid-column: 3;
    justify-self: start;
    min-width: 68px;
    margin-top: -25px;
  }

  .screen-track {
    display: flex;
    justify-content: flex-start;
    gap: 14px;
    width: calc(100% + 14px);
    margin-right: -14px;
    padding-right: 14px;
    scroll-snap-type: x mandatory;
  }

  .screen-card {
    scroll-snap-align: start;
  }

  .faq-item > button {
    grid-template-columns: 30px 1fr 20px;
    min-height: 72px;
    padding: 14px 8px;
  }

  .faq-item > button strong {
    font-size: 14px;
  }

  .faq-answer {
    padding: 0 8px 20px 50px;
  }

  .official-site summary {
    padding: 14px;
  }

  .official-site > p {
    padding: 0 14px 18px 46px;
  }

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

  .voice-card {
    min-height: 0;
    padding: 21px;
  }

  .download-section {
    padding: 55px 14px;
  }

  .download-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .download-number {
    align-items: center;
    padding: 20px;
    border-right: 0;
    border-bottom: 1px dashed var(--ink);
  }

  .download-number span {
    font-size: 44px;
  }

  .download-copy {
    align-items: center;
    padding: 29px 20px;
  }

  .download-copy h2 {
    font-size: 25px;
  }

  .download-link {
    grid-column: auto;
  }

  .footer-inner {
    display: flex;
    flex-direction: column;
    padding: 45px 0 24px;
    text-align: center;
  }

  .footer-nav ul {
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px 22px;
  }

  .footer-inner > p {
    width: 100%;
  }

  .back-top {
    right: 15px;
    bottom: 15px;
    width: 46px;
    height: 46px;
  }
}

@media (max-width: 370px) {
  .header-inner {
    width: calc(100% - 18px);
  }

  .brand img {
    width: 33px;
    height: 33px;
  }

  .brand-copy strong {
    font-size: 13px;
  }

  .brand-copy span {
    font-size: 12px;
  }

  .mobile-download {
    padding: 7px 8px;
  }

  .hero-inner,
  .section-inner,
  .footer-inner {
    width: calc(100% - 22px);
  }

  .hero-slogan {
    font-size: 23px;
  }

  .hero-tags span {
    width: calc(50% - 4px);
    justify-content: center;
  }

  .desk-bar {
    padding: 9px 12px;
  }

  .desk-feature {
    grid-template-columns: 78px 1fr;
  }

  .desk-feature figure {
    width: 78px;
  }

  .choice-group {
    grid-template-columns: 1fr;
  }
}

@media (hover: none) and (pointer: coarse) {
  a,
  button,
  summary {
    transition: none !important;
    animation: none !important;
  }

  a:active,
  button:active,
  summary:active {
    opacity: 1;
    filter: none;
    transform: none;
  }
}