@charset "UTF-8";

:root {
  --ink: #15233a;
  --muted: #64748a;
  --line: #cfdce8;
  --paper: #fffdf9;
  --soft: #f4f8fb;
  --pink: #f292ad;
  --pink-deep: #df6f96;
  --mint: #76d7cf;
  --blue: #77bfe1;
  --violet: #9187de;
  --header-height: 76px;
}

* {
  box-sizing: border-box;
}

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

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  overflow-x: clip;
}

body.menu-open {
  overflow: hidden;
}

button,
input {
  font: inherit;
}

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

button {
  color: inherit;
}

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

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

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

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

.shell {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
}

.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;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 253, 249, 0.98);
  border-bottom: 1px solid var(--line);
  transform: translateZ(0);
  backface-visibility: hidden;
}

.header-inner {
  display: flex;
  align-items: center;
  height: 100%;
}

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

.brand > img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border: 1px solid #d7dce5;
  border-radius: 14px;
  background: #fff;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  white-space: nowrap;
}

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

.brand-copy span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

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

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

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

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 3px;
  background: var(--pink-deep);
  content: "";
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.18s ease;
}

.main-nav a:hover::after,
.main-nav a.is-active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 38px;
}

.header-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 142px;
  min-height: 44px;
  padding: 10px 18px;
  color: #fff;
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 8px;
  font-weight: 700;
  font-size: 14px;
}

.header-download:hover {
  color: var(--ink);
  background: var(--mint);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--ink);
  cursor: pointer;
}

main {
  padding-top: var(--header-height);
}

.hero {
  min-height: 700px;
  background-color: #fdfbf7;
  background-image:
    linear-gradient(rgba(94, 127, 161, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(94, 127, 161, 0.09) 1px, transparent 1px);
  background-size: 42px 42px;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 410px;
  gap: 80px;
  align-items: center;
  min-height: 700px;
}

.hero-copy {
  padding: 70px 0;
}

.eyebrow,
.section-index {
  color: var(--pink-deep);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.2em;
}

.hero h1 {
  margin-top: 18px;
  color: var(--ink);
  font-size: clamp(74px, 7vw, 108px);
  line-height: 0.98;
  letter-spacing: -0.06em;
  white-space: nowrap;
}

.hero h1::first-letter {
  color: var(--pink-deep);
}

.hero-copy > h2 {
  margin-top: 30px;
  font-size: clamp(28px, 3vw, 38px);
  line-height: 1.25;
}

.hero-description {
  max-width: 665px;
  margin-top: 22px;
  color: #52637a;
  font-size: 16px;
  line-height: 2;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.hero-points li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-weight: 700;
  font-size: 13px;
}

.hero-action {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  margin-top: 32px;
}

.primary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 11px;
  min-width: 232px;
  min-height: 58px;
  padding: 14px 24px;
  color: #fff;
  background: var(--pink-deep);
  border: 1px solid var(--pink-deep);
  border-radius: 10px;
  font-size: 17px;
  font-weight: 800;
}

.primary-link:hover {
  color: var(--ink);
  background: var(--mint);
  border-color: var(--ink);
}

.primary-link:hover .i-download,
.download-link:hover .i-download {
  filter: brightness(0) saturate(100%) invert(10%) sepia(15%) saturate(2446%) hue-rotate(176deg) brightness(94%) contrast(93%);
}

.age-label {
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
}

.hero-device-wrap {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  min-width: 0;
}

.phone {
  width: 326px;
  height: 620px;
  padding: 13px;
  background: #171a23;
  border: 2px solid #171a23;
  border-radius: 42px;
}

.phone-screen {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  background: #fff;
  border-radius: 30px;
}

.phone-screen::before {
  position: absolute;
  top: 0;
  left: 50%;
  z-index: 2;
  width: 92px;
  height: 24px;
  background: #171a23;
  border-radius: 0 0 16px 16px;
  content: "";
  transform: translateX(-50%);
}

.phone-status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 42px;
  padding: 12px 16px 4px;
  font-size: 12px;
  font-weight: 800;
}

.phone-status-icons {
  font-size: 12px;
  letter-spacing: 2px;
}

.phone-appbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 15px;
  border-bottom: 1px solid #e5ebf1;
}

.phone-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

.phone-brand img {
  width: 32px;
  height: 32px;
  border-radius: 9px;
}

.phone-brand strong {
  font-size: 15px;
}

.phone-icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.phone-search {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 12px 14px 4px;
  padding: 0 12px;
  background: #f1f5f8;
  border: 1px solid #e2e8ef;
  border-radius: 12px;
}

.phone-search input {
  width: 100%;
  height: 38px;
  padding: 0;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--ink);
  font-size: 12px;
}

.phone-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 4px 14px 10px;
  border-bottom: 1px solid #e5ebf1;
}

.phone-tabs button {
  position: relative;
  padding: 9px 4px;
  background: transparent;
  border: 0;
  font-size: 12px;
  cursor: pointer;
}

.phone-tabs button.is-active {
  color: var(--pink-deep);
  font-weight: 800;
}

.phone-tabs button.is-active::after {
  position: absolute;
  right: 18px;
  bottom: -1px;
  left: 18px;
  height: 2px;
  background: var(--pink-deep);
  content: "";
}

.phone-feature {
  display: grid;
  grid-template-columns: 82px 1fr;
  min-height: 116px;
  margin: 0 14px;
  overflow: hidden;
  color: #fff;
  background: var(--ink);
  border-radius: 12px;
}

.phone-feature > img {
  width: 82px;
  height: 116px;
  padding: 4px;
  object-fit: contain;
  background: #f5f1f7;
}

.phone-feature-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 12px;
}

.phone-feature-copy small {
  color: var(--mint);
  font-size: 12px;
}

.phone-feature-copy strong {
  margin: 4px 0;
  font-size: 19px;
}

.phone-feature-copy span {
  color: #ccd5df;
  font-size: 12px;
}

.phone-section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px 6px;
  font-size: 12px;
}

.phone-section-head strong {
  font-size: 14px;
}

.phone-section-head span {
  color: var(--muted);
}

.phone-list {
  padding: 0 14px;
}

.phone-list article {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 9px;
  align-items: center;
  min-height: 62px;
  border-bottom: 1px solid #e5ebf1;
}

.phone-list img {
  width: 44px;
  height: 50px;
  padding: 2px;
  object-fit: contain;
  background: #f3f6f8;
  border-radius: 6px;
}

.phone-list article > span {
  display: flex;
  flex-direction: column;
}

.phone-list strong,
.phone-list small {
  font-size: 12px;
}

.phone-list small {
  color: var(--muted);
}

.phone-list button {
  min-width: 44px;
  padding: 5px 7px;
  color: var(--pink-deep);
  background: #fff;
  border: 1px solid var(--pink-deep);
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
}

.phone-list button.is-saved {
  color: #fff;
  background: var(--pink-deep);
}

.phone-bottom-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: auto;
  padding: 8px 10px 9px;
  border-top: 1px solid #e5ebf1;
}

.phone-bottom-nav button {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 0;
  color: #758399;
  background: transparent;
  border: 0;
  font-size: 12px;
  cursor: pointer;
}

.phone-bottom-nav button.is-active {
  color: var(--pink-deep);
  font-weight: 800;
}

.section {
  padding: 108px 0;
  scroll-margin-top: var(--header-height);
}

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

.section-heading h2,
.download-copy h2 {
  margin-top: 8px;
  font-size: clamp(38px, 5vw, 60px);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.section-heading > p,
.horizontal-heading > p {
  max-width: 530px;
  margin-top: 12px;
  color: var(--muted);
}

.horizontal-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 22px;
}

.horizontal-heading > p {
  margin: 0 0 6px;
  text-align: right;
}

.channel-section {
  background: #fff7f9;
}

.channel-console {
  border: 1px solid var(--ink);
  background: #fff;
}

.channel-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  background: var(--ink);
  color: #fff;
}

.control-title {
  font-weight: 800;
}

.filter-tabs {
  display: flex;
  gap: 8px;
}

.filter-tabs button {
  padding: 8px 18px;
  color: #fff;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  cursor: pointer;
  font-size: 13px;
}

.filter-tabs button.is-active {
  color: var(--ink);
  background: var(--mint);
  border-color: var(--mint);
  font-weight: 800;
}

.channel-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr;
  gap: 0;
}

.channel-card {
  display: grid;
  grid-template-rows: 250px 1fr;
  border-right: 1px solid var(--line);
}

.channel-card:last-child {
  border-right: 0;
}

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

.channel-card figure {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
  padding: 14px;
  background: var(--soft);
  border-bottom: 1px solid var(--line);
}

.channel-card figure img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.channel-card > div {
  padding: 22px;
}

.card-kicker {
  color: var(--pink-deep);
  font-size: 12px;
  font-weight: 800;
}

.channel-card h3 {
  margin-top: 6px;
  font-size: 23px;
}

.channel-card p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}

.follow-button {
  margin-top: 16px;
  padding: 8px 14px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--ink);
  border-radius: 6px;
  font-weight: 700;
  cursor: pointer;
}

.follow-button[aria-pressed="true"] {
  color: #fff;
  background: var(--pink-deep);
  border-color: var(--pink-deep);
}

.route-section {
  background: #eaf8f5;
}

.route-shell {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 80px;
  align-items: start;
}

.route-heading {
  position: sticky;
  top: calc(var(--header-height) + 30px);
}

.route-board {
  border: 1px solid var(--ink);
  background: #fff;
}

.weekday-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--ink);
}

.weekday-tabs button {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 16px 8px;
  background: transparent;
  border: 0;
  border-right: 1px solid var(--line);
  cursor: pointer;
}

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

.weekday-tabs button span {
  color: var(--muted);
  font-size: 12px;
}

.weekday-tabs button.is-active {
  color: var(--ink);
  background: var(--pink);
  font-weight: 800;
}

.route-list {
  padding: 0 24px;
}

.route-list article {
  display: grid;
  grid-template-columns: 74px 1fr auto;
  gap: 18px;
  align-items: center;
  min-height: 105px;
  border-bottom: 1px solid var(--line);
}

.route-list time {
  color: var(--pink-deep);
  font-size: 17px;
  font-weight: 800;
}

.route-list article > span {
  display: flex;
  flex-direction: column;
}

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

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

.remind-toggle {
  min-width: 74px;
  padding: 8px 10px;
  color: var(--pink-deep);
  background: #fff;
  border: 1px solid var(--pink-deep);
  border-radius: 8px;
  cursor: pointer;
}

.remind-toggle.is-on {
  color: #fff;
  background: var(--pink-deep);
}

.route-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding: 18px 24px;
  background: var(--ink);
  color: #fff;
}

.route-summary span {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 12px;
}

.route-summary strong {
  color: var(--mint);
  font-size: 24px;
}

.screen-section {
  background: #f7f5fd;
}

.screen-track {
  display: grid;
  grid-template-columns: repeat(4, 250px);
  justify-content: space-between;
  gap: 22px;
}

.screen-card {
  width: 250px;
  background: #fff;
  border: 1px solid var(--ink);
}

.screen-image {
  display: flex;
  width: 250px;
  height: 450px;
  align-items: center;
  justify-content: center;
  overflow: visible;
  background: #f3f5f7;
  border-bottom: 1px solid var(--ink);
}

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

.screen-card figcaption {
  display: flex;
  gap: 14px;
  align-items: center;
  min-height: 92px;
  padding: 16px;
}

.screen-card figcaption b {
  color: var(--pink-deep);
  font-size: 18px;
}

.screen-card figcaption span {
  display: flex;
  flex-direction: column;
}

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

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

.guide-section {
  background: var(--paper);
}

.faq-list {
  border-top: 1px solid var(--ink);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item > button {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  min-height: 76px;
  padding: 16px 20px;
  text-align: left;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.faq-item > button span {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 17px;
  font-weight: 800;
}

.faq-item > button b {
  color: var(--pink-deep);
  font-size: 13px;
}

.faq-item > button i {
  position: relative;
  width: 18px;
  height: 18px;
}

.faq-item > button i::before,
.faq-item > button i::after {
  position: absolute;
  top: 8px;
  left: 1px;
  width: 16px;
  height: 2px;
  background: var(--ink);
  content: "";
}

.faq-item > button i::after {
  transform: rotate(90deg);
}

.faq-item > button[aria-expanded="true"] i::after {
  transform: rotate(0);
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.18s ease;
}

.faq-answer p {
  min-height: 0;
  padding: 0 20px;
  overflow: hidden;
  color: var(--muted);
}

.faq-item.is-open .faq-answer {
  grid-template-rows: 1fr;
}

.faq-item.is-open .faq-answer p {
  padding-bottom: 20px;
}

.official-site {
  margin-top: 22px;
  border: 1px solid var(--ink);
}

.official-site summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 16px 20px;
  list-style: none;
  cursor: pointer;
}

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

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

.official-site summary::after {
  font-size: 25px;
  content: "+";
}

.official-site[open] summary::after {
  content: "−";
}

.official-site p {
  padding: 0 52px 20px;
}

.official-site a {
  color: var(--pink-deep);
  text-decoration: underline;
}

.review-section {
  background: #eef9f7;
}

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

.review-card {
  display: flex;
  flex-direction: column;
  min-height: 292px;
  padding: 24px;
  background: #fff;
  border: 1px solid #bed8d4;
  border-top: 4px solid var(--pink-deep);
  border-radius: 10px;
}

.review-head {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 10px;
  align-items: center;
}

.review-head strong {
  font-size: 15px;
}

.review-head span {
  color: var(--pink-deep);
  font-size: 12px;
  font-weight: 800;
}

.review-card p {
  margin-top: 18px;
  font-size: 14px;
  line-height: 1.95;
}

.review-card time {
  margin-top: auto;
  padding-top: 18px;
  text-align: right;
  color: var(--muted);
  font-size: 12px;
}

.download-section {
  padding: 72px 0;
  color: #fff;
  background: var(--ink);
}

.download-shell {
  display: grid;
  grid-template-columns: 190px 1fr 235px;
  min-height: 190px;
  border: 1px solid rgba(255, 255, 255, 0.28);
}

.download-number {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 30px;
  color: var(--ink);
  background: var(--mint);
}

.download-number strong {
  font-size: 64px;
  line-height: 1;
}

.download-number span {
  margin-top: 10px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.download-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 30px 42px;
}

.download-copy > span {
  color: var(--pink);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.download-copy h2 {
  margin-top: 8px;
  font-size: 30px;
}

.download-copy p {
  margin-top: 8px;
  color: #c7d0dc;
}

.download-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--ink);
  background: var(--pink);
  font-size: 18px;
  font-weight: 800;
}

.download-link:hover {
  background: var(--mint);
}

.site-footer {
  padding: 44px 0;
  color: #d5deea;
  background: #0d1727;
}

.footer-inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 28px 60px;
  align-items: center;
}

.footer-brand .brand-copy strong {
  color: #fff;
}

.footer-nav {
  display: flex;
  justify-content: flex-end;
  gap: 28px;
}

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

.footer-nav a:hover {
  color: var(--pink);
}

.footer-inner > p {
  grid-column: 1 / -1;
  padding-top: 24px;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.17);
  font-size: 12px;
}

.back-top {
  position: fixed;
  right: 24px;
  bottom: 22px;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  padding: 0;
  color: var(--ink);
  background: var(--mint);
  border: 1px solid var(--ink);
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.18s ease, transform 0.18s ease;
  cursor: pointer;
}

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

i[class^="i-"] {
  display: inline-block;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

.i-menu { background-image: url("../icons/menu.svg"); }
.i-download { background-image: url("../icons/download.svg"); }
.i-search { background-image: url("../icons/search.svg"); }
.i-avatar { background-image: url("../icons/avatar.svg"); width: 44px !important; height: 44px !important; }
.i-up { background-image: url("../icons/up.svg"); }
.i-bookmark { background-image: url("../icons/bookmark.svg"); }
.i-bell { background-image: url("../icons/bell.svg"); }
.i-compass { background-image: url("../icons/compass.svg"); }
.i-clock { background-image: url("../icons/clock.svg"); }
.i-globe { background-image: url("../icons/globe.svg"); }

@media (max-width: 1040px) {
  :root {
    --header-height: 66px;
  }

  .shell {
    width: min(100% - 28px, 760px);
  }

  .site-header {
    height: var(--header-height);
  }

  .brand > img {
    width: 42px;
    height: 42px;
  }

  .brand-copy strong {
    font-size: 17px;
  }

  .header-download {
    min-width: 98px;
    min-height: 42px;
    padding: 8px 12px;
  }

  .header-download {
    font-size: 0;
  }

  .header-download::after {
    font-size: 13px;
    content: "立即下载";
  }

  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    right: 0;
    left: 0;
    z-index: 999;
    display: none;
    padding: 10px 14px 16px;
    background: var(--paper);
    border-bottom: 1px solid var(--ink);
  }

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

  .main-nav ul {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    width: min(100%, 760px);
    margin: 0 auto;
  }

  .main-nav a {
    padding: 12px;
    background: #fff;
    border: 1px solid var(--line);
    text-align: center;
  }

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

  .header-actions {
    margin-left: auto;
  }

  .hero {
    min-height: auto;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 30px;
    min-height: auto;
    padding: 58px 0 70px;
  }

  .hero-copy {
    padding: 0;
    text-align: center;
  }

  .hero h1 {
    font-size: clamp(62px, 16vw, 90px);
  }

  .hero-description {
    margin-right: auto;
    margin-left: auto;
  }

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

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

  .hero-device-wrap {
    justify-content: center;
  }

  .route-shell {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .route-heading {
    position: static;
  }

  .screen-track {
    display: flex;
    justify-content: flex-start;
    gap: 16px;
    padding: 0 0 12px;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scroll-snap-type: x mandatory;
    scrollbar-width: thin;
  }

  .screen-card {
    flex: 0 0 250px;
    scroll-snap-align: start;
  }

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

@media (max-width: 720px) {
  body {
    width: 100%;
    overflow-x: hidden;
  }

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

  .brand {
    min-width: 0;
  }

  .brand-copy strong {
    font-size: 15px;
  }

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

  .header-actions {
    gap: 8px;
  }

  .header-download {
    min-width: 86px;
  }

  .hero-grid {
    padding-top: 46px;
  }

  .eyebrow,
  .section-index {
    font-size: 12px;
  }

  .hero h1 {
    font-size: clamp(52px, 17vw, 74px);
  }

  .hero-copy > h2 {
    font-size: 28px;
  }

  .hero-description {
    font-size: 14px;
    line-height: 1.85;
  }

  .hero-points li {
    flex: 1 1 30%;
    justify-content: center;
    padding: 8px;
    font-size: 12px;
  }

  .primary-link {
    width: min(280px, 100%);
  }

  .phone {
    width: min(306px, 90vw);
    height: 584px;
    border-radius: 38px;
  }

  .section {
    padding: 76px 0;
  }

  .section-heading {
    margin-bottom: 30px;
    text-align: center;
  }

  .section-heading h2,
  .download-copy h2 {
    font-size: 38px;
  }

  .horizontal-heading {
    display: block;
  }

  .horizontal-heading > p {
    margin-top: 12px;
    text-align: center;
  }

  .channel-controls {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .filter-tabs {
    width: 100%;
    overflow-x: auto;
  }

  .filter-tabs button {
    flex: 0 0 auto;
  }

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

  .channel-card {
    grid-template-columns: 120px 1fr;
    grid-template-rows: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .channel-card figure {
    min-height: 180px;
    border-right: 1px solid var(--line);
    border-bottom: 0;
  }

  .channel-card > div {
    padding: 18px;
  }

  .channel-card h3 {
    font-size: 20px;
  }

  .route-list {
    padding: 0 14px;
  }

  .route-list article {
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 10px;
    padding: 14px 0;
  }

  .route-list .remind-toggle {
    grid-column: 2;
    justify-self: start;
  }

  .route-summary {
    padding: 16px 10px;
  }

  .screen-track {
    margin-right: -14px;
    padding-right: 14px;
  }

  .faq-item > button {
    padding: 14px 8px;
  }

  .faq-item > button span {
    gap: 10px;
    font-size: 14px;
  }

  .faq-answer p {
    padding-right: 8px;
    padding-left: 36px;
    font-size: 13px;
  }

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

  .official-site p {
    padding: 0 46px 18px;
    overflow-wrap: anywhere;
  }

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

  .review-card {
    min-height: 270px;
  }

  .download-section {
    padding: 58px 0;
  }

  .download-shell {
    grid-template-columns: 1fr;
  }

  .download-number {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 18px 22px;
  }

  .download-number strong {
    font-size: 42px;
  }

  .download-copy {
    padding: 28px 22px;
    text-align: center;
  }

  .download-copy h2 {
    font-size: 28px;
  }

  .download-link {
    min-height: 72px;
  }

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

  .footer-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px 22px;
  }

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

  .back-top {
    right: 14px;
    bottom: 14px;
  }
}

@media (max-width: 374px) {
  .shell {
    width: calc(100% - 20px);
  }

  .brand > img {
    width: 38px;
    height: 38px;
  }

  .header-download {
    min-width: 78px;
    padding: 7px 8px;
  }

  .menu-toggle {
    width: 40px;
    height: 40px;
  }

  .phone {
    width: min(296px, 94vw);
  }

  .channel-card {
    grid-template-columns: 104px 1fr;
  }
}

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

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