/* Shared responsive corrections for the static page set. */

html,
body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-padding-top: 68px;
}

img,
video {
  max-width: 100%;
}

main,
section,
header,
footer,
.hero-inner,
.hero-showcase,
.services-layout,
.solution-grid,
.store-grid,
.cooperation-inner {
  min-width: 0;
}

/* Keep the absolutely positioned home heading centered while motion.js runs. */
html.motion-enabled .advantages-heading.motion-heading {
  transform: translate3d(-50%, 10px, 0);
}

html.motion-enabled .advantages.motion-pending .advantages-heading.motion-heading {
  transform: translate3d(-50%, 10px, 0);
}

html.motion-enabled .advantages.motion-visible .advantages-heading.motion-heading {
  transform: translate3d(-50%, 0, 0);
}

@media (max-width: 1200px) {
  .site-header,
  .jianliu-page .site-header {
    width: calc(100% - 32px);
    max-width: none;
  }

  .main-nav {
    min-width: 0;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .main-nav::-webkit-scrollbar {
    display: none;
  }

  .main-nav a {
    flex: 0 0 auto;
  }
}

@media (min-width: 761px) and (max-width: 1200px) {
  /* Preserve the source ratio instead of cropping a landscape video into a tall card. */
  .online-hero {
    height: auto;
    min-height: 0;
    padding: 140px 40px 80px;
  }

  .hero-showcase {
    height: auto;
    align-items: start;
  }

  .online-page .video-screen {
    height: auto;
    min-height: 0;
    aspect-ratio: 16 / 9;
  }

  .online-page .video-screen video,
  .study-page .hero-video video,
  .jianliu-page .hero-video video {
    height: 100%;
    object-fit: contain;
  }

  .hero-message {
    min-width: 0;
    padding-top: 22px;
  }

  .services {
    min-height: 0;
    padding-bottom: 110px;
  }

  .services-layout {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }

  .service-tabs button {
    height: auto;
    aspect-ratio: 830 / 218;
  }

  .study-collage {
    min-width: 0;
  }

  .study-page .study-hero {
    height: auto;
    min-height: 0;
  }

  .study-page .hero-mobile {
    height: auto;
    align-items: start;
  }

  .study-page .hero-video {
    height: auto;
    min-height: 0;
    aspect-ratio: 16 / 9;
  }

  .study-page .hero-copy {
    min-width: 0;
  }

  .study-page .study-invite {
    height: auto;
    padding-bottom: 95px;
  }

  .study-page .invite-panel {
    height: auto;
    min-height: 318px;
  }

  .study-page .invite-panel > img {
    height: 100%;
    min-height: 318px;
  }

  .study-page .study-solution {
    height: auto;
    min-height: 0;
    padding-bottom: 110px;
  }

  .study-page .solution-grid {
    grid-template-rows: auto auto;
    align-items: start;
  }

  .study-page .operation-panel,
  .study-page .support-panel,
  .study-page .ai-matrix {
    min-width: 0;
  }

  .study-page .operation-copy {
    grid-template-columns: minmax(0, 1fr) minmax(100px, 35%);
  }

  .study-page .operation-copy img {
    width: 100%;
    height: 320px;
  }

  .study-page .support-grid figure {
    width: 100%;
  }

  .study-page .store-showcase {
    height: auto;
    min-height: 0;
    padding-bottom: 100px;
  }

  .study-page .store-grid {
    height: auto;
    aspect-ratio: 1728 / 1210;
  }

  .jianliu-page .jl-hero {
    height: auto;
    min-height: 0;
    padding: 150px 40px 70px;
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 34px;
    align-items: center;
    background-size: auto 100%;
  }

  .jianliu-page .hero-video {
    position: relative;
    top: auto;
    left: auto;
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    margin: 0;
  }

  .jianliu-page .hero-copy {
    position: relative;
    top: auto;
    right: auto;
    width: 100%;
    min-width: 0;
    text-align: right;
  }
}

@media (min-width: 1201px) and (max-width: 1400px) {
  .online-page .services-layout {
    width: calc(100% - 80px);
    grid-template-columns: minmax(0, .82fr) minmax(0, 1fr);
    gap: 40px;
  }

  .online-page .service-tabs button {
    width: 100%;
    height: auto;
    aspect-ratio: 830 / 218;
  }

  .online-page .study-collage {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
  }

  .online-page .study-photo {
    width: 38%;
    height: 38%;
  }
}

@media (max-width: 760px) {
  .site-header,
  .jianliu-page .site-header {
    position: fixed;
    inset: 0 0 auto;
    width: 100%;
    padding-right: 12px;
    padding-left: 12px;
    background: #fff;
  }

  .brand-mark,
  .jianliu-page .brand-mark {
    width: 50px;
    min-width: 50px;
  }

  .main-nav {
    top: 12px;
    right: auto;
    left: 68px;
    width: calc(100vw - 74px) !important;
    max-width: none;
    display: grid !important;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    justify-content: initial;
    gap: 0;
    overflow: visible;
  }

  .main-nav a {
    box-sizing: border-box;
    min-width: 0;
    min-height: 44px;
    height: 44px;
    padding: 0 5px;
    font-size: 10px;
  }

  .main-nav a:nth-child(n) {
    width: auto !important;
    min-width: 0 !important;
    flex: none !important;
  }

  .hero .qr-art {
    width: min(310px, 100%);
  }

  .hero .hero-cta {
    width: 100%;
  }

  .online-page .video-screen,
  .study-page .hero-video,
  .jianliu-page .hero-video {
    height: auto;
    min-height: 0;
    aspect-ratio: 16 / 9;
  }

  .online-page .video-screen video,
  .study-page .hero-video video,
  .jianliu-page .hero-video video {
    height: 100%;
    object-fit: contain;
  }

  .online-page .hero-message,
  .study-page .hero-copy {
    min-width: 0;
  }

  .study-page .store-grid {
    aspect-ratio: auto;
  }
}

@media (max-width: 359px) {
  .main-nav {
    left: 62px;
    width: calc(100vw - 68px) !important;
  }

  .main-nav a {
    padding: 0 3px;
    font-size: 9px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html.motion-enabled .advantages-heading.motion-heading,
  html.motion-enabled .advantages.motion-visible .advantages-heading.motion-heading {
    transform: translateX(-50%);
  }
}

/* Mobile and tablet layout hardening. The original desktop tracks remain clipped
   inside their own windows, while touch layouts present one focused item at a time. */
@media (min-width: 761px) and (max-width: 1200px) {
  .products {
    min-height: 0;
    padding-bottom: 90px;
  }

  .product-carousel {
    width: min(620px, calc(100% - 40px));
    display: grid;
    grid-template-columns: 48px minmax(0, 1fr) 48px;
    gap: 12px;
  }

  .product-window {
    width: 100%;
    min-width: 0;
  }

  .product-track {
    --product-gap: 0;
  }

  .product-track article {
    width: var(--product-card-width, 390px);
    flex: 0 0 var(--product-card-width, 390px);
    min-width: 0;
  }

  .product-media {
    width: 100%;
    height: auto;
    aspect-ratio: 13 / 10;
  }

  .product-arrow {
    width: 48px;
    height: 48px;
    margin: 0;
  }

  .online-page .hero-showcase {
    width: calc(100% - 48px);
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 24px;
  }

  .online-page .hero-message {
    padding-top: 8px;
  }

  .online-page .hero-message h1 {
    font-size: clamp(28px, 4vw, 34px);
  }
}

@media (max-width: 760px) {
  body {
    padding-right: env(safe-area-inset-right);
    padding-left: env(safe-area-inset-left);
  }

  .main-nav a {
    font-size: clamp(9px, 2.55vw, 11px);
  }

  .products {
    min-height: 0;
    padding: 112px 0 54px;
  }

  .products .title-products {
    position: relative;
    top: auto;
    left: auto;
    width: min(290px, 84vw);
    height: auto;
    margin: 0 auto 34px;
    transform: none;
  }

  .product-carousel {
    width: 100%;
    padding: 0 8px;
    display: grid;
    grid-template-columns: 36px minmax(0, 1fr) 36px;
    gap: 4px;
  }

  .product-window {
    width: 100%;
    min-width: 0;
  }

  .product-track {
    --product-gap: 0;
  }

  .product-track article {
    width: var(--product-card-width, 270px);
    min-width: 0;
    min-height: 0;
    flex: 0 0 var(--product-card-width, 270px);
    padding-bottom: 20px;
  }

  .product-media {
    width: 100%;
    height: auto;
    aspect-ratio: 13 / 10;
  }

  .product-track h3 {
    margin: 16px 16px 6px;
    font-size: 17px;
  }

  .product-track p {
    margin: 0 16px;
    font-size: 12px;
  }

  .product-arrow {
    width: 36px;
    height: 36px;
    margin: 0;
  }

  .product-arrow::before {
    border-top-width: 6px;
    border-bottom-width: 6px;
    transform: translate(-50%, -50%) scale(.72);
  }

  .jianliu-page .phone-points {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .jianliu-page .phone-points li {
    min-width: 0;
    min-height: 38px;
    height: auto;
    padding: 6px 6px 6px 42px;
    line-height: 1.25;
    white-space: normal;
  }

  .jianliu-page .phone-points li span {
    min-width: 0;
    overflow-wrap: anywhere;
  }

  .jianliu-page .phone-points b {
    width: 34px;
    height: 34px;
  }

  .floating-contact {
    top: auto;
    right: max(12px, env(safe-area-inset-right));
    bottom: max(12px, env(safe-area-inset-bottom));
    width: 44px;
    height: 44px;
    padding: 0;
    display: grid;
    place-items: center;
    border-radius: 50%;
    font-size: 18px;
  }

  .floating-contact span {
    display: none;
  }

  .back-top {
    right: max(64px, calc(env(safe-area-inset-right) + 52px));
    bottom: max(12px, env(safe-area-inset-bottom));
  }
}

@media (max-width: 359px) {
  .product-carousel {
    grid-template-columns: 32px minmax(0, 1fr) 32px;
    gap: 2px;
    padding-right: 6px;
    padding-left: 6px;
  }

  .product-arrow {
    width: 32px;
    height: 32px;
  }

  .jianliu-page .phone-points {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* PRD 3.x final layout layer. This intentionally follows the legacy page CSS
   so the shared breakpoints cannot be overwritten by page-local rules. */
@media (min-width: 1201px) and (max-width: 1400px) {
  .hero {
    min-height: 700px;
  }

  .hero-inner {
    padding-top: 132px;
  }

  .hero h1 {
    margin-top: 34px;
    margin-bottom: 28px;
  }

  .hero-card {
    min-height: 0;
    padding-top: 24px;
    padding-bottom: 20px;
  }

  .intro {
    min-height: 0;
    padding: 106px 0 70px;
  }

  .intro .stats {
    margin: 20px auto 44px;
  }

  .intro .carousel-main {
    height: auto;
    padding: 28px 0 48px;
  }

  .intro .carousel-window {
    width: min(1000px, 78%);
    height: auto;
    aspect-ratio: 1200 / 640;
  }

  .intro .carousel-track img {
    width: 100%;
    height: 100%;
    flex-basis: 100%;
  }

  .cooperation:not(.contact-page .cooperation) {
    min-height: 0;
    padding: 125px 0 70px;
  }

  .cooperation:not(.contact-page .cooperation) .segmented-control {
    margin-bottom: 48px;
  }

  .cooperation:not(.contact-page .cooperation) .partner-window {
    height: auto;
    aspect-ratio: 1560 / 581;
  }

  .cooperation:not(.contact-page .cooperation) .partner-track img {
    height: 100%;
  }

  .history {
    min-height: 0;
    padding: 150px 0 72px;
  }

  .advantages {
    min-height: 0;
    padding: 135px 0 50px;
  }

  .advantage-card {
    min-height: 248px;
    padding-top: 22px;
  }

  .advantage-card img {
    width: 92px;
    height: 92px;
  }

  .advantage-metrics {
    min-height: 124px;
    padding: 24px 90px;
  }

  .advantages h2 {
    margin-top: 34px;
  }

  .products {
    min-height: 0;
    padding: 150px 0 60px;
  }

  .product-track article {
    min-height: 410px;
  }

  .product-media {
    height: 270px;
  }

  .join {
    min-height: 270px;
    padding-top: 62px;
    padding-bottom: 58px;
  }
}

@media (min-width: 761px) and (max-width: 1200px) {
  .hero {
    min-height: 0;
  }

  .hero-inner {
    padding-top: 125px;
    padding-bottom: 60px;
  }

  .hero h1 {
    margin-top: 30px;
    margin-bottom: 26px;
  }

  .hero-card {
    min-height: 0;
    padding: 24px 28px;
    font-size: 14px;
  }

  .intro,
  .cooperation:not(.contact-page .cooperation),
  .history,
  .advantages,
  .products {
    min-height: 0;
  }

  .intro {
    padding: 104px 0 64px;
  }

  .intro .stats {
    margin: 20px auto 40px;
  }

  .intro .carousel-main {
    height: auto;
    padding: 24px 0 44px;
  }

  .intro .carousel-window {
    width: 78%;
    height: auto;
    aspect-ratio: 1200 / 640;
  }

  .intro .carousel-track img {
    width: 100%;
    height: 100%;
    flex-basis: 100%;
  }

  .cooperation:not(.contact-page .cooperation) {
    padding: 122px 0 64px;
  }

  .cooperation:not(.contact-page .cooperation) .segmented-control {
    margin-bottom: 44px;
  }

  .cooperation:not(.contact-page .cooperation) .partner-window {
    height: auto;
    aspect-ratio: 1560 / 581;
  }

  .cooperation:not(.contact-page .cooperation) .partner-track img {
    height: 100%;
  }

  .history {
    padding: 142px 0 62px;
  }

  .advantages {
    padding: 132px 0 52px;
  }

  .advantage-card {
    min-height: 224px;
    padding: 20px;
  }

  .advantage-card img {
    width: 86px;
    height: 86px;
  }

  .advantage-metrics {
    min-height: 0;
    padding: 20px 34px;
  }

  .advantages h2 {
    margin-top: 30px;
  }

  .products {
    padding-top: 142px;
  }

  .online-page .services,
  .online-page .dsa-section,
  .online-page .cases {
    min-height: 0;
  }

  .online-page .services {
    padding: 118px 0 84px;
  }

  .online-page .dsa-section {
    padding: 72px 0 88px;
  }

  .online-page .outcomes {
    height: auto;
    min-height: 0;
    padding: 90px 0 84px;
    background: #fff;
  }

  .online-page .outcomes > *,
  .online-page .retention-banner > * {
    visibility: visible;
  }

  .online-page .outcomes-stage {
    margin-top: 70px;
  }

  .online-page .outcome-block {
    height: 270px;
  }

  .online-page .cases {
    padding: 112px 0 88px;
  }

  .online-page .case-chat-grid {
    min-height: 0;
    margin-top: 56px;
    padding: 28px;
  }

  .online-page .case-chat-grid img {
    height: auto;
    aspect-ratio: 16 / 10;
  }

  .study-page .study-solution,
  .study-page .store-showcase {
    height: auto;
    min-height: 0;
  }

  .study-page .study-solution {
    padding: 78px 0 90px;
  }

  .study-page .store-showcase {
    padding-top: 76px;
  }

  .jianliu-page .why-phone,
  .jianliu-page .capability-section {
    height: auto;
    min-height: 0;
  }

  .jianliu-page .why-phone {
    padding: 74px 0 0;
  }

  .jianliu-page .why-stage {
    position: relative;
    top: auto;
    min-height: 0;
    height: auto;
    margin-top: 42px;
    padding: 48px 42px;
    display: grid;
    grid-template-columns: minmax(0, .68fr) minmax(0, 1fr);
    align-items: center;
    gap: 32px;
  }

  .jianliu-page .phone-description,
  .jianliu-page .phone-points,
  .jianliu-page .phone-hand {
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    width: auto;
    margin: 0;
    transform: none;
  }

  .jianliu-page .phone-description {
    grid-column: 2;
    grid-row: 1;
    text-align: left;
  }

  .jianliu-page .phone-description h3 {
    margin-bottom: 22px;
  }

  .jianliu-page .phone-points {
    grid-column: 1;
    grid-row: 1 / span 2;
  }

  .jianliu-page .phone-points li {
    margin-bottom: 26px;
  }

  .jianliu-page .phone-hand {
    grid-column: 2;
    grid-row: 2;
    width: min(100%, 500px);
    justify-self: center;
  }

  .jianliu-page .stage-orb {
    right: -140px;
    bottom: -240px;
    width: 510px;
    height: 510px;
  }

  .jianliu-page .capability-section {
    padding: 78px 0 0;
  }

  .jianliu-page .capability-stage {
    position: relative;
    top: auto;
    height: auto;
    min-height: 0;
    margin-top: 42px;
    padding: 54px 0 60px;
  }

  .jianliu-page .capability-grid {
    margin-top: 0;
  }

  .jianliu-page .ai-base {
    height: auto;
    margin-top: 0;
  }

  .jianliu-page .team-area {
    height: auto;
    padding-top: 78px;
    padding-bottom: 76px;
  }

  .contact-page .contact-hero {
    height: auto;
    min-height: 0;
    padding: 150px 0 72px;
    background-size: cover;
  }

  .contact-page .contact-hero-inner {
    width: min(920px, calc(100% - 64px));
    height: auto;
    min-height: 0;
    padding: 0;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(250px, .62fr);
    gap: 36px 30px;
    align-items: start;
  }

  .contact-page .contact-about,
  .contact-page .hero-qr-panel,
  .contact-page .top-contact-card,
  .contact-page .mini-qr-group {
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    transform: none;
  }

  .contact-page .contact-about {
    width: 100%;
  }

  .contact-page .hero-qr-panel {
    grid-column: 2;
    grid-row: 1;
    width: 100%;
    height: auto;
    margin: 0;
  }

  .contact-page .top-contact-card {
    grid-column: 1 / -1;
    width: min(870px, 100%);
    height: auto;
    min-height: 210px;
    margin: 0;
  }

  .contact-page .mini-qr-group {
    grid-column: 1 / -1;
    width: min(470px, 100%);
    justify-content: center;
    margin: 0 auto;
  }

  .contact-page .cooperation {
    height: auto;
    min-height: 0;
  }

  .contact-page .cooperation-inner {
    width: min(920px, calc(100% - 64px));
    height: auto;
    min-height: 0;
    padding: 86px 0 80px;
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(330px, 1fr);
    gap: 52px;
  }

  .contact-page .cooperation-copy,
  .contact-page .cooperation-list,
  .contact-page .contact-form {
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
  }

  .contact-page .cooperation-copy {
    width: 100%;
  }

  .contact-page .cooperation-list {
    width: 100%;
    margin: 70px 0 0;
  }

  .contact-page .contact-form {
    width: 100%;
    height: auto;
    min-height: 0;
    margin: 0;
  }
}

@media (max-width: 760px) {
  .site-header,
  .jianliu-page .site-header {
    z-index: 1000;
  }

  .main-nav {
    position: fixed !important;
    z-index: 1002;
    top: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    left: auto !important;
    width: min(320px, 86vw) !important;
    max-width: none !important;
    padding: 96px 22px 28px !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    justify-content: flex-start !important;
    grid-template-columns: none !important;
    gap: 10px !important;
    overflow: hidden !important;
    visibility: hidden;
    transform: translate3d(105%, 0, 0);
    background: #fff;
    box-shadow: -12px 0 35px #183b661f;
    transition: transform .28s cubic-bezier(.16, 1, .3, 1), visibility 0s linear .28s;
  }

  body.nav-open .main-nav {
    visibility: visible;
    transform: translate3d(0, 0, 0);
    transition-delay: 0s;
  }

  .main-nav a,
  .main-nav a:nth-child(n) {
    width: 100% !important;
    min-width: 0 !important;
    min-height: 48px !important;
    height: 48px !important;
    flex: 0 0 48px !important;
    padding: 0 18px !important;
    justify-content: flex-start !important;
    border-radius: 12px !important;
    font-size: 14px !important;
    line-height: 1.2;
  }

  .nav-toggle {
    z-index: 1003;
  }

  .nav-scrim {
    z-index: 1001;
  }

  .hero {
    min-height: 0;
    padding: 96px 16px 44px;
  }

  .hero h1 {
    margin: 24px 0;
  }

  .hero-card {
    padding: 22px 20px;
    font-size: 13px;
    line-height: 1.65;
  }

  .hero-card strong {
    font-size: 16px;
  }

  .hero .qr-panel {
    margin-top: 26px;
  }

  .hero .qr-art {
    width: min(250px, 78vw);
  }

  .hero .qr-panel p {
    font-size: 13px;
  }

  .intro .stat-card span {
    font-size: 11px;
  }

  .advantages {
    padding-top: 126px;
  }

  .advantage-grid {
    gap: 14px;
    margin-bottom: 28px;
  }

  .advantage-card {
    min-height: 0;
    padding: 20px 22px;
  }

  .advantage-card img {
    width: 78px;
    height: 78px;
    margin-bottom: 8px;
  }

  .advantage-card p {
    font-size: 12px;
  }

  .advantage-metrics {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0;
    padding: 16px 10px;
  }

  .advantage-metrics div,
  .advantage-metrics div:nth-child(n) {
    width: auto;
    min-width: 0;
    padding: 10px 4px;
    border-right: 1px solid #6684d2;
    border-top: 0;
  }

  .advantage-metrics div:nth-child(2n) {
    border-right: 0;
  }

  .advantage-metrics div:nth-child(n + 3) {
    border-top: 1px solid #6684d2;
  }

  .advantage-metrics strong {
    font-size: clamp(20px, 6.2vw, 26px);
  }

  .advantage-metrics span {
    margin-top: 5px;
    font-size: 14px;
  }

  .online-page .online-hero {
    padding: 92px 16px 48px;
  }

  .online-page .hero-message {
    padding: 30px 2px 0;
  }

  .online-page .hero-message h1 {
    font-size: clamp(25px, 7vw, 30px);
  }

  .online-page .hero-details,
  .online-page .hero-version {
    font-size: 12px;
  }

  .online-page .join-banner-copy p,
  .online-page .cases-lead {
    font-size: 13px;
  }

  .online-page .service-tabs {
    display: flex;
    width: calc(100% + 30px);
    margin: 0 -15px;
    padding: 2px 15px 14px;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
  }

  .online-page .service-tabs::-webkit-scrollbar {
    display: none;
  }

  .online-page .service-tabs button {
    width: min(78vw, 304px);
    flex: 0 0 min(78vw, 304px);
    scroll-snap-align: start;
  }

  .online-page .dsa-section {
    padding-top: 34px;
  }

  .online-page .outcomes-lead,
  .online-page .outcome-block span,
  .online-page .retention-banner small {
    font-size: 12px;
  }

  .online-page .outcome-block strong {
    font-size: 25px;
  }

  .online-page .case-chat-grid img {
    height: auto;
    aspect-ratio: 1 / 1;
  }

  .study-page .study-hero {
    min-height: 0;
    padding: 94px 16px 46px;
  }

  .study-page .hero-video {
    height: auto;
    aspect-ratio: 16 / 9;
  }

  .study-page .hero-copy {
    padding-top: 28px;
  }

  .study-page .hero-copy p,
  .study-page .invite-copy p,
  .study-page .operation-copy dl,
  .study-page .audience-pill {
    font-size: 13px;
  }

  .study-page .support-grid figure {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
  }

  .study-page .support-grid img {
    width: 100%;
    height: 100%;
    object-fit: contain;
  }

  .jianliu-page .jl-hero {
    min-height: 0;
    padding: 94px 16px 42px;
  }

  .jianliu-page .hero-video {
    height: auto;
    aspect-ratio: 16 / 9;
    margin-bottom: 28px;
  }

  .jianliu-page .hero-summary,
  .jianliu-page .join-copy p,
  .jianliu-page .phone-description p {
    font-size: 13px;
  }

  .jianliu-page .why-stage {
    min-height: 0;
    padding: 30px 16px 38px;
  }

  .jianliu-page .phone-hand {
    width: min(320px, 100%);
    margin-top: 6px;
  }

  .jianliu-page .phone-points {
    margin-top: -34px;
  }

  .jianliu-page .phone-points li {
    font-size: 12px;
  }

  .jianliu-page .stage-orb {
    right: -150px;
    bottom: -190px;
    width: 400px;
    height: 400px;
  }

  .jianliu-page .capability-stage {
    min-height: 0;
    padding: 42px 16px 54px;
  }

  .jianliu-page .capability-grid {
    gap: 22px;
  }

  .jianliu-page .capability-grid p,
  .jianliu-page .team-card p {
    font-size: 12px;
  }

  .jianliu-page .capability-note,
  .jianliu-page .base-lead {
    font-size: 12px;
  }

  .jianliu-page .jianliu-footer .footer-brand p {
    font-size: 12px;
  }

  .contact-page .contact-hero {
    min-height: 0;
    padding: 94px 0 52px;
    background-size: auto 960px;
  }

  .contact-page .contact-hero-inner {
    width: 100%;
    min-height: 0;
    padding: 0 16px;
    display: flex;
    flex-direction: column;
  }

  .contact-page .contact-about,
  .contact-page .top-contact-card,
  .contact-page .hero-qr-panel,
  .contact-page .mini-qr-group {
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    transform: none;
  }

  .contact-page .contact-about {
    order: 1;
    width: 100%;
  }

  .contact-page .about-card {
    font-size: 13px;
  }

  .contact-page .top-contact-card {
    order: 2;
    width: 100%;
    min-height: 0;
    margin: 28px 0 0;
    padding: 30px 20px;
  }

  .contact-page .hero-qr-panel {
    order: 3;
    width: 100%;
    height: auto;
    min-height: 0;
    margin-top: 26px;
  }

  .contact-page .hero-qr-frame {
    width: min(250px, 78vw);
  }

  .contact-page .hero-qr-panel > p {
    font-size: 13px;
  }

  .contact-page .hero-qr-button {
    position: relative;
    top: auto;
    left: auto;
    width: min(450px, 100%);
    height: 54px;
    margin: 0 auto;
    transform: none;
  }

  .contact-page .mini-qr-group {
    order: 4;
    justify-content: center;
    margin-top: 26px;
  }

  .contact-page .mini-qr-group figure {
    width: min(40vw, 130px);
    font-size: 12px;
  }

  .contact-page .mini-qr-group img {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
  }

  .contact-page .top-contact-extra,
  .contact-page .contact-footer {
    font-size: 12px;
  }

  .contact-page .cooperation,
  .contact-page .cooperation-inner {
    height: auto;
    min-height: 0;
  }

  .contact-page .cooperation-inner {
    width: 100%;
    padding: 58px 20px 62px;
  }

  .contact-page .cooperation-copy,
  .contact-page .cooperation-list,
  .contact-page .contact-form {
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
  }

  .contact-page .cooperation-copy {
    width: 100%;
    padding: 0;
  }

  .contact-page .cooperation-copy h2 {
    font-size: clamp(28px, 8vw, 34px);
  }

  .contact-page .direct-contact {
    margin-top: 64px;
  }

  .contact-page .cooperation-list {
    width: 100%;
    min-height: 0;
    margin: 54px 0 0;
    padding: 26px 16px;
  }

  .contact-page .cooperation-row {
    font-size: 11px;
  }

  .contact-page .contact-form {
    width: 100%;
    min-height: 0;
    height: auto;
    margin-top: 50px;
  }

  .contact-page .form-body {
    min-height: 0;
    padding: 90px 18px 32px;
  }

  .contact-page .form-select select,
  .contact-page .form-body input,
  .contact-page .form-body textarea,
  .contact-page .form-body input::placeholder,
  .contact-page .form-body textarea::placeholder {
    font-size: 14px;
  }

  .contact-page .form-body button {
    width: 100%;
    min-height: 48px;
  }
}

@media (max-width: 359px) {
  .main-nav {
    width: min(290px, 88vw) !important;
  }

  .online-page .service-tabs button {
    width: 82vw;
    flex-basis: 82vw;
  }

  .advantage-metrics,
  .jianliu-page .phone-points {
    grid-template-columns: minmax(0, 1fr);
  }

  .advantage-metrics div,
  .advantage-metrics div:nth-child(n) {
    border-right: 0;
    border-top: 1px solid #6684d2;
  }

  .advantage-metrics div:first-child {
    border-top: 0;
  }
}