@charset "UTF-8";

:root {
  --ink: #252321;
  --orange: #ff7900;
  --paper: #fffdf9;
  --cream: #fff7ea;
  --soft: #f2f0ed;
  --dark: #252525;
  --footer: #191919;
  --line: #e6ddd2;
  --muted: #746c64;
  --radius: 5px;
  --page-width: 1160px;
  --header-height: 68px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

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

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

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

button {
  color: inherit;
  font: inherit;
}

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

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

section {
  scroll-margin-top: calc(var(--header-height) + 18px);
}

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

.section-space {
  padding: 104px 0;
}

.section-heading {
  max-width: 420px;
}

.section-mark,
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--orange);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.3;
}

.section-mark::before,
.eyebrow::before {
  width: 26px;
  height: 2px;
  content: "";
  background: currentColor;
}

.section-title {
  margin-top: 11px;
  font-size: clamp(30px, 3vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.04em;
}

.section-heading > p:last-child {
  margin-top: 15px;
  color: var(--muted);
}

.icon {
  display: inline-flex;
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
}

.icon::before {
  width: 100%;
  height: 100%;
  content: "";
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

.icon-download::before { background-image: url("../icons/download.svg"); }
.icon-menu::before { background-image: url("../icons/menu.svg"); }
.icon-close::before { background-image: url("../icons/close.svg"); }
.icon-book::before { background-image: url("../icons/book.svg"); }
.icon-heart::before { background-image: url("../icons/heart.svg"); }
.icon-comment::before { background-image: url("../icons/comment.svg"); }
.icon-compass::before { background-image: url("../icons/compass.svg"); }
.icon-route::before { background-image: url("../icons/route.svg"); }
.icon-chevron::before { background-image: url("../icons/chevron.svg"); }
.icon-globe::before { background-image: url("../icons/globe.svg"); }
.icon-star::before { background-image: url("../icons/star.svg"); }

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  right: 0;
  left: 0;
  height: var(--header-height);
  transform: translate3d(0, 0, 0);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 249, 0.98);
  backface-visibility: hidden;
}

.header-inner {
  display: grid;
  width: min(calc(100% - 48px), var(--page-width));
  height: 100%;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: 9px;
  font-size: 19px;
  font-weight: 800;
  line-height: 1;
}

.brand img {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.primary-nav ul {
  display: flex;
  align-items: center;
  gap: 31px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.primary-nav a {
  display: block;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 700;
}

.primary-nav a:hover {
  color: var(--orange);
}

.header-actions {
  display: flex;
  justify-content: flex-end;
  gap: 9px;
}

.download-button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 23px;
  border: 0;
  border-radius: var(--radius);
  color: #fff;
  background: var(--orange);
  font-size: 15px;
  font-weight: 800;
  white-space: nowrap;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.download-button:hover {
  color: var(--ink);
  background: #ffc43a;
}

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

.download-button.compact {
  min-height: 39px;
  padding: 0 16px;
  font-size: 13px;
}

.download-button.compact .icon {
  width: 15px;
  height: 15px;
  flex-basis: 15px;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 39px;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: var(--paper);
  cursor: pointer;
}

.hero {
  min-height: 695px;
  padding: calc(var(--header-height) + 71px) 0 67px;
  background: var(--cream);
}

.hero-layout {
  display: grid;
  min-height: 557px;
  grid-template-columns: minmax(0, 0.86fr) minmax(430px, 1.14fr);
  align-items: center;
}

.hero-copy {
  max-width: 470px;
}

.hero-copy .eyebrow {
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(48px, 6vw, 76px);
  line-height: 0.95;
  letter-spacing: -0.07em;
}

.hero-lead {
  margin-top: 21px;
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 700;
}

.hero-description {
  max-width: 390px;
  margin-top: 15px;
  color: var(--muted);
}

.hero-button {
  margin-top: 28px;
}

.update-time {
  margin-top: 13px;
  color: var(--muted);
  font-size: 13px;
}

.hero-visual {
  position: relative;
  display: flex;
  min-height: 526px;
  align-items: center;
  justify-content: flex-end;
}

.phone-frame {
  overflow: hidden;
  padding: 12px;
  border-radius: var(--radius);
  background: #212121;
  box-shadow: 0 20px 40px rgba(40, 29, 18, 0.16);
}

.phone-frame img {
  width: 100%;
  height: auto;
}

.hero-phone {
  width: 286px;
}

.activity-card {
  position: absolute;
  z-index: 2;
  right: 178px;
  bottom: 54px;
  width: 294px;
  padding: 23px;
  border: 1px solid #e6d1b5;
  border-radius: var(--radius);
  background: #fffdf9;
  box-shadow: 0 16px 34px rgba(55, 38, 21, 0.14);
}

.card-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 11px;
  border-bottom: 1px solid var(--line);
}

.card-heading h2 {
  font-size: 19px;
}

.card-heading span {
  color: var(--orange);
  font-size: 12px;
  font-weight: 700;
}

.activity-row {
  display: flex;
  gap: 11px;
  align-items: center;
  padding-top: 12px;
}

.activity-row .icon {
  width: 28px;
  height: 28px;
  flex-basis: 28px;
  padding: 6px;
  border-radius: var(--radius);
  background: #fff1dd;
}

.activity-row h3 {
  font-size: 14px;
  line-height: 1.3;
}

.activity-row p {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.features {
  background: #fff;
}

.feature-layout {
  display: grid;
  grid-template-columns: minmax(250px, 0.67fr) minmax(520px, 1.33fr);
  gap: 86px;
  align-items: start;
}

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

.feature-item {
  display: grid;
  min-height: 128px;
  grid-template-columns: 60px 1fr 26px;
  gap: 16px;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.feature-number {
  color: var(--orange);
  font-size: 18px;
  font-weight: 800;
}

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

.feature-item p {
  max-width: 500px;
  margin-top: 4px;
  color: var(--muted);
  font-size: 14px;
}

.feature-item .icon {
  width: 24px;
  height: 24px;
}

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

.screens-heading,
.reviews-heading {
  display: flex;
  max-width: none;
  align-items: flex-end;
  justify-content: space-between;
  gap: 36px;
}

.screens-heading > p,
.reviews-heading > p {
  max-width: 365px;
  margin: 0;
  color: var(--muted);
}

.screen-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 17px;
  margin-top: 45px;
}

.screen-card {
  min-width: 0;
}

.screen-image {
  display: flex;
  min-height: 363px;
  align-items: center;
  justify-content: center;
  padding: 6px;
  border: 1px solid #d8d2ca;
  border-radius: var(--radius);
  background: #fff;
}

.screen-image img {
  width: min(100%, 205px);
  height: auto;
}

.screen-card figcaption {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 8px;
  margin-top: 12px;
}

.screen-card strong {
  color: var(--orange);
  font-size: 13px;
}

.screen-card h3 {
  font-size: 15px;
}

.screen-card p {
  grid-column: 2;
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.community {
  background: var(--cream);
}

.community-layout {
  display: grid;
  grid-template-columns: minmax(300px, 0.85fr) minmax(460px, 1.15fr);
  gap: 110px;
  align-items: center;
}

.community-preview {
  display: flex;
  justify-content: center;
}

.community-phone {
  width: 256px;
}

.community-copy {
  max-width: 510px;
}

.community-intro {
  margin-top: 15px;
  color: var(--muted);
}

.discussion-list {
  margin-top: 30px;
  border-top: 1px solid var(--line);
}

.discussion-list article {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 21px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.discussion-time {
  color: var(--orange);
  font-size: 13px;
  font-weight: 800;
}

.discussion-list h3 {
  font-size: 16px;
}

.discussion-list p {
  margin-top: 3px;
  color: var(--muted);
  font-size: 13px;
}

.faq {
  background: #fff;
}

.faq-inner {
  width: min(calc(100% - 48px), var(--page-width));
}

.faq-list {
  width: min(100%, 830px);
  margin-top: 35px;
  margin-right: auto;
  margin-left: auto;
}

.faq-item {
  margin-top: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.faq-item button,
.official-box > button {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 18px;
  border: 0;
  border-radius: var(--radius);
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.faq-item h3 {
  font-size: 15px;
}

.faq-item button[aria-expanded="true"] .icon-chevron,
.official-box > button[aria-expanded="true"] .icon-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 18px 17px;
  color: var(--muted);
  font-size: 14px;
}

.official {
  padding-top: 0;
  background: #fff;
}

.official .section-mark {
  margin-bottom: 14px;
}

.official-box {
  border: 1px solid var(--ink);
  border-radius: var(--radius);
}

.official-box > button {
  padding: 18px;
}

.official-box > button h2 {
  flex: 1;
  font-size: 15px;
}

.official-box > button > .icon:first-child {
  width: 17px;
  height: 17px;
}

.official-box > div {
  padding: 0 18px 18px 53px;
}

.official-box a {
  color: var(--orange);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.reviews {
  background: #fff4e4;
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 42px;
}

.review-card {
  min-width: 0;
  padding: 20px;
  border: 1px solid #ead8c0;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.5);
}

.review-top {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 7px;
}

.review-no {
  color: var(--orange);
  font-size: 12px;
  font-weight: 800;
}

.avatar {
  display: inline-grid;
  width: 25px;
  height: 25px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--orange);
  font-size: 12px;
  font-weight: 700;
}

.username {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--muted);
  font-size: 13px;
}

.stars {
  display: inline-flex;
  flex: 0 0 auto;
  gap: 1px;
}

.stars .icon {
  width: 12px;
  height: 12px;
  flex-basis: 12px;
}

.review-top time {
  margin-left: auto;
  color: var(--muted);
  font-size: 11px;
  white-space: nowrap;
}

.review-card > p {
  margin-top: 16px;
  color: #4f4841;
  font-size: 14px;
  line-height: 1.8;
}

.download-section {
  padding: 63px 0;
  background: var(--dark);
  color: #fff;
}

.download-layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.download-layout .section-mark {
  color: #ffc43a;
}

.download-layout h2 {
  margin-top: 11px;
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.2;
}

.download-layout p:last-child {
  margin-top: 12px;
  color: #d8d1c8;
}

.download-large {
  min-width: 180px;
  background: var(--orange);
}

.site-footer {
  padding: 44px 0 19px;
  color: #f5efe8;
  background: var(--footer);
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 80px;
}

.footer-brand {
  color: #fff;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, 130px);
  gap: 42px;
}

.footer-links div {
  display: grid;
  gap: 5px;
}

.footer-links h2 {
  margin-bottom: 5px;
  font-size: 14px;
}

.footer-links a {
  color: #c9c2ba;
  font-size: 13px;
}

.footer-links a:hover {
  color: #ffc43a;
}

.copyright {
  width: min(calc(100% - 48px), var(--page-width));
  padding-top: 19px;
  margin: 32px auto 0;
  border-top: 1px solid #4b4844;
  color: #aaa39d;
  font-size: 12px;
  text-align: center;
}

@media (max-width: 900px) {
  .primary-nav ul { gap: 18px; }
  .hero-layout { grid-template-columns: minmax(0, 0.86fr) minmax(350px, 1.14fr); }
  .activity-card { right: auto; left: 0; }
  .feature-layout, .community-layout { gap: 50px; }
  .screen-image { min-height: 319px; }
}

@media (max-width: 720px) {
  :root { --header-height: 59px; }
  body { font-size: 14px; }
  .page-width, .header-inner { width: min(calc(100% - 28px), var(--page-width)); }
  .section-space { padding: 68px 0; }
  .section-title { font-size: 30px; }
  .site-header { position: fixed; }
  .header-inner { display: flex; justify-content: space-between; }
  .brand { gap: 6px; font-size: 16px; }
  .brand img { width: 29px; height: 29px; }
  .primary-nav { position: fixed; top: var(--header-height); right: 14px; left: 14px; display: none; padding: 9px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); box-shadow: 0 12px 24px rgba(38, 30, 24, 0.12); }
  .primary-nav.is-open { display: block; }
  .primary-nav ul { display: grid; gap: 0; }
  .primary-nav li + li { border-top: 1px solid var(--line); }
  .primary-nav a { padding: 11px 9px; }
  .header-actions { gap: 7px; }
  .download-button.compact { min-height: 35px; padding: 0 11px; font-size: 12px; }
  .download-button.compact .icon { display: none; }
  .menu-toggle { display: inline-flex; width: 35px; height: 35px; }
  .hero { min-height: 0; padding: calc(var(--header-height) + 53px) 0 59px; }
  .hero-layout { display: block; }
  .hero-copy { max-width: 100%; text-align: center; }
  .hero-copy .eyebrow { justify-content: center; margin-bottom: 13px; }
  .hero h1 { font-size: 48px; }
  .hero-lead { margin-top: 15px; font-size: 20px; }
  .hero-description { max-width: 320px; margin: 12px auto 0; }
  .hero-button { margin-top: 22px; }
  .update-time { margin-top: 10px; }
  .hero-visual { min-height: 477px; margin-top: 34px; align-items: flex-start; justify-content: flex-end; }
  .hero-phone { width: min(250px, 69vw); padding: 10px; }
  .activity-card { bottom: auto; top: 160px; left: 0; width: min(247px, 70vw); padding: 17px; text-align: left; }
  .card-heading h2 { font-size: 17px; }
  .activity-row { padding-top: 9px; }
  .activity-row .icon { width: 25px; height: 25px; flex-basis: 25px; }
  .feature-layout, .community-layout { display: block; }
  .feature-list { margin-top: 31px; }
  .feature-item { min-height: 109px; grid-template-columns: 43px 1fr 23px; gap: 10px; }
  .feature-item h3 { font-size: 17px; }
  .feature-item p { font-size: 13px; }
  .screens-heading, .reviews-heading { display: block; }
  .screens-heading > p, .reviews-heading > p { margin-top: 13px; }
  .screen-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 28px; }
  .screen-image { min-height: 0; padding: 4px; }
  .screen-image img { width: 100%; max-width: 150px; }
  .screen-card figcaption { margin-top: 8px; }
  .screen-card h3 { font-size: 14px; }
  .screen-card p { display: none; }
  .community-preview { margin-bottom: 42px; }
  .community-phone { width: min(250px, 75vw); }
  .discussion-list { margin-top: 23px; }
  .discussion-list article { grid-template-columns: 57px 1fr; gap: 12px; padding: 14px 0; }
  .faq-inner { width: min(calc(100% - 28px), var(--page-width)); }
  .faq-list { margin-top: 27px; }
  .faq-item button, .official-box > button { padding: 15px; }
  .official { padding-top: 0; }
  .official-box > div { padding: 0 15px 15px 46px; }
  .review-grid { grid-template-columns: 1fr; gap: 10px; margin-top: 27px; }
  .review-card { padding: 17px; }
  .download-section { padding: 46px 0; }
  .download-layout { display: block; text-align: left; }
  .download-layout > div { display: block; }
  .download-layout .section-mark { justify-content: flex-start; }
  .download-layout h2, .download-layout p { text-align: left; }
  .download-layout h2 { font-size: 29px; }
  .download-large { display: flex; width: min(100%, 260px); margin: 25px auto 0; }
  .site-footer .footer-inner { display: flex; flex-direction: column; align-items: center; gap: 29px; text-align: center; }
  .site-footer .footer-brand { justify-content: center; margin: 0 auto; }
  .site-footer .footer-links { width: min(100%, 270px); grid-template-columns: repeat(2, minmax(105px, 1fr)); justify-content: center; justify-items: center; gap: 32px; margin: 0 auto; text-align: center; }
  .site-footer .footer-links div { justify-items: center; text-align: center; }
  .site-footer .footer-links a, .site-footer .footer-links h2 { width: 100%; text-align: center; }
  .copyright { width: min(calc(100% - 28px), var(--page-width)); margin-top: 28px; }
}

@media (max-width: 390px) {
  .download-button.compact { padding: 0 8px; }
  .hero h1 { font-size: 44px; }
  .activity-card { width: min(240px, 73vw); }
  .review-top { gap: 5px; }
  .review-top time { font-size: 10px; }
}