:root {
  --ink: #111315;
  --muted: #6e6a64;
  --paper: #f5f1ea;
  --card: #fffaf2;
  --line: rgba(50, 45, 38, 0.14);
  --orange: #ff741f;
  --orange-2: #ff9b3d;
  --gold: #d6a35d;
  --shadow: 0 18px 45px rgba(48, 37, 24, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 12% 22%, rgba(255, 116, 31, 0.11), transparent 24rem),
    linear-gradient(155deg, rgba(255, 255, 255, 0.72), transparent 26rem),
    var(--paper);
}

.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;
}

img {
  max-width: 100%;
}

header,
main,
footer {
  width: 100%;
  max-width: 100%;
}

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

button,
input,
select {
  font: inherit;
}

.hero {
  position: relative;
  min-height: 0;
  overflow: hidden;
  color: #fff;
  background: #050505;
}

.hero::before,
.quote-band::before {
  content: "";
  position: absolute;
  inset: auto -12% 6% -12%;
  height: 7.6rem;
  background:
    linear-gradient(100deg, transparent 10%, rgba(255, 116, 31, 0.98) 45%, #ffb15a 50%, rgba(255, 116, 31, 0.78) 56%, transparent 90%),
    linear-gradient(96deg, transparent 12%, rgba(255, 116, 31, 0.28), transparent 92%);
  filter: blur(0.5px);
  transform: rotate(-11deg);
  opacity: 0.84;
}

.hero::after {
  content: "AI";
  position: absolute;
  top: 6.4rem;
  right: 2.1rem;
  display: grid;
  width: 6.2rem;
  height: 6.2rem;
  place-items: center;
  border: 1px solid rgba(255, 145, 61, 0.62);
  border-radius: 1.2rem;
  color: rgba(255, 166, 83, 0.78);
  font-size: 2.3rem;
  font-weight: 900;
  box-shadow: 0 0 42px rgba(255, 116, 31, 0.45), inset 0 0 30px rgba(255, 116, 31, 0.18);
  transform: rotate(-4deg);
}

.hero::before,
.hero::after {
  content: none;
  display: none;
}

.hero-poster {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.hero-logo {
  position: absolute;
  top: max(0.95rem, env(safe-area-inset-top));
  left: 1rem;
  z-index: 3;
  width: 7.4rem;
  height: auto;
  filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.28));
}

.hero-hotspot {
  position: absolute;
  z-index: 2;
  top: 80%;
  height: 7.4%;
  border-radius: 0.42rem;
}

.hero-call {
  left: 8%;
  width: 40%;
}

.hero-cases {
  left: 52.2%;
  width: 40%;
}

.topbar {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: max(1.05rem, env(safe-area-inset-top)) 1.25rem 0;
}

.brand {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.menu-button {
  display: grid;
  gap: 0.32rem;
  width: 2.35rem;
  height: 2.35rem;
  padding: 0.45rem;
  border: 0;
  background: transparent;
}

.menu-button span {
  display: block;
  height: 0.16rem;
  border-radius: 999px;
  background: #fff;
}

.mobile-menu {
  position: absolute;
  z-index: 4;
  top: 3.9rem;
  right: 1rem;
  display: none;
  min-width: 9.5rem;
  padding: 0.65rem;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 1rem;
  background: rgba(18, 18, 18, 0.92);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(18px);
}

.mobile-menu.is-open {
  display: grid;
}

.mobile-menu a {
  padding: 0.72rem 0.85rem;
  color: rgba(255, 255, 255, 0.88);
  font-weight: 700;
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(100%, 29rem);
  padding: 4.4rem 1.25rem 3rem;
}

.eyebrow {
  margin: 0 0 0.82rem;
  color: rgba(255, 179, 111, 0.92);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

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

.hero h1 {
  margin-bottom: 1.05rem;
  font-size: clamp(2.15rem, 10.4vw, 3.3rem);
  line-height: 1.14;
  letter-spacing: -0.08rem;
}

.hero h1 span,
.quote-band span {
  color: var(--orange);
}

.metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.7rem;
  margin-bottom: 1rem;
}

.metrics strong {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.75rem;
  font-weight: 800;
}

.metrics span {
  color: var(--orange-2);
}

.hero-copy {
  max-width: 25rem;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.92rem;
  line-height: 1.82;
}

.primary-cta,
.quote-band a,
.submit-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.35rem;
  border: 0;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, var(--orange), #ff8d2d);
  box-shadow: 0 14px 32px rgba(255, 116, 31, 0.32);
  font-weight: 900;
}

.primary-cta::after,
.quote-band a::after,
.outline-cta::after {
  content: "›";
  display: grid;
  width: 1.35rem;
  height: 1.35rem;
  margin-left: 0.55rem;
  place-items: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  color: var(--orange);
}

.hero-device {
  position: absolute;
  right: -0.8rem;
  bottom: 6.7rem;
  z-index: 1;
  width: 11.7rem;
  height: 8.1rem;
  border: 0.55rem solid #15191b;
  border-radius: 0.65rem;
  background: #090a0a;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 24px 60px rgba(0, 0, 0, 0.58);
  transform: rotate(-1deg);
}

.camera-screen {
  position: relative;
  height: 100%;
  padding: 0.55rem;
  overflow: hidden;
  background:
    linear-gradient(to top, rgba(255, 116, 31, 0.2), transparent 42%),
    linear-gradient(135deg, rgba(101, 154, 177, 0.42), rgba(21, 25, 29, 0.7)),
    repeating-linear-gradient(90deg, #182027 0 0.35rem, #111417 0.35rem 0.7rem);
}

.camera-screen p,
.camera-screen strong {
  position: relative;
  z-index: 1;
  margin: 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.55rem;
}

.camera-screen strong {
  position: absolute;
  right: 0.55rem;
  bottom: 0.5rem;
  color: var(--orange-2);
}

.screen-grid {
  position: absolute;
  inset: 0.7rem;
  border: 1px solid rgba(255, 255, 255, 0.34);
}

.screen-grid::before,
.screen-grid::after {
  content: "";
  position: absolute;
  background: rgba(255, 255, 255, 0.22);
}

.screen-grid::before {
  top: 50%;
  left: 0;
  width: 100%;
  height: 1px;
}

.screen-grid::after {
  top: 0;
  left: 50%;
  width: 1px;
  height: 100%;
}

.section {
  padding: 1.8rem 1rem 1.35rem;
}

.services-section {
  padding-top: 1.8rem;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  margin: 0 0 1.05rem;
  text-align: center;
}

.section-title span {
  width: 2.1rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 116, 31, 0.9), transparent);
}

.section-title h2 {
  margin: 0;
  color: #2e2d2a;
  font-size: 1.2rem;
  letter-spacing: 0.02em;
}

.section-title em {
  color: var(--muted);
  font-style: normal;
  font-weight: 500;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.72rem;
}

.service-card,
.advantage-grid article,
.brief-card,
.case-strip article,
.client-logos,
.about-panel {
  border: 1px solid var(--line);
  background: rgba(255, 250, 242, 0.82);
  box-shadow: var(--shadow);
}

.service-card {
  position: relative;
  min-height: 14.8rem;
  padding: 0.45rem 0.45rem 0.68rem;
  border-radius: 0.8rem;
}

.service-card h3 {
  margin: 0.5rem 0 0.32rem;
  font-size: 0.98rem;
}

.service-card p {
  margin-bottom: 0;
  color: #4e4b45;
  font-size: 0.78rem;
  line-height: 1.5;
}

.service-card strong {
  color: var(--orange);
  font-size: 0.78rem;
  line-height: 1.45;
}

.visual {
  aspect-ratio: 4 / 3;
  height: auto;
  overflow: hidden;
  border-radius: 0.58rem;
  background-color: #12171b;
}

.visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.service-custom-card {
  display: grid;
  min-height: 14.8rem;
  place-items: center;
  padding: 0.45rem;
  text-align: center;
  background:
    linear-gradient(135deg, rgba(255, 116, 31, 0.11), rgba(255, 255, 255, 0.72)),
    rgba(255, 250, 242, 0.82);
}

.service-custom-card span {
  display: grid;
  width: 100%;
  height: 100%;
  place-items: center;
  border: 1px dashed rgba(255, 116, 31, 0.58);
  border-radius: 0.72rem;
  color: var(--orange);
  font-size: 1.08rem;
  font-weight: 950;
  line-height: 1.6;
}

.quote-band {
  position: relative;
  display: block;
  width: calc(100% - 1.6rem);
  max-width: calc(100% - 1.6rem);
  margin: 0.55rem 0.8rem 0;
  padding: 0;
  overflow: hidden;
  border-radius: 1rem;
  color: #fff;
  background: #101111;
}

.quote-band::before {
  content: none;
}

.quote-band__visual {
  display: block;
  width: 100%;
  height: auto;
}

.quote-band p,
.quote-band h2,
.quote-band a {
  position: relative;
  z-index: 1;
}

.quote-band p {
  margin-bottom: 0.38rem;
  color: rgba(255, 255, 255, 0.68);
  font-weight: 800;
}

.quote-band h2 {
  margin-bottom: 0;
  font-family: "STZhongsong", "Songti SC", "STSong", "Noto Serif SC", "SimSun", serif;
  font-size: 1.22rem;
  font-weight: 950;
  line-height: 1.62;
}

.quote-band a {
  position: absolute;
  left: 0.95rem;
  bottom: 0.82rem;
  width: fit-content;
  min-height: 2.55rem;
  padding: 0 1.2rem;
  font-size: 0.88rem;
}

.about-panel {
  display: grid;
  gap: 1rem;
  width: calc(100% - 1.6rem);
  max-width: calc(100% - 1.6rem);
  margin: 1rem 0.8rem 0;
  padding: 1rem;
  border-radius: 1rem;
}

.about-copy h2 {
  margin-bottom: 0.65rem;
}

.about-copy p {
  color: #4d4941;
  font-size: 0.86rem;
  line-height: 1.75;
}

.about-photo {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 0.8rem;
  object-fit: cover;
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.72rem;
}

.advantage-grid article {
  min-height: 9.7rem;
  padding: 0.95rem 0.82rem 0.88rem;
  border-radius: 0.78rem;
  text-align: center;
}

.advantage-grid h3 {
  margin-bottom: 0;
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 1.08rem;
  font-weight: 900;
  line-height: 1.45;
}

.advantage-grid h3::after {
  content: "";
  display: block;
  width: 1.5rem;
  height: 2px;
  margin: 0.48rem auto 0.55rem;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(255, 116, 31, 0.92), rgba(255, 155, 61, 0.86));
}

.advantage-grid p {
  max-width: none;
  margin: 0;
  color: #54514b;
  font-size: 0.79rem;
  line-height: 1.65;
  text-align: left;
}

.case-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.72rem;
}

.case-card {
  display: block;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  color: inherit;
  text-align: left;
  background: rgba(255, 250, 242, 0.82);
  box-shadow: var(--shadow);
}

.case-cover {
  position: relative;
  display: block;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #131414;
}

.case-cover::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: rgba(8, 8, 8, 0.34);
  backdrop-filter: blur(8px);
  transform: translate(-50%, -50%);
}

.case-cover::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 1;
  width: 0;
  height: 0;
  border-top: 0.52rem solid transparent;
  border-bottom: 0.52rem solid transparent;
  border-left: 0.84rem solid rgba(255, 255, 255, 0.88);
  transform: translate(-34%, -50%);
}

.case-cover img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-meta {
  display: block;
  padding: 0.65rem 0.58rem 0.78rem;
}

.case-meta h3 {
  margin-bottom: 0;
  font-size: 0.82rem;
  line-height: 1.4;
}

.outline-cta {
  display: flex;
  width: min(15rem, 78%);
  min-height: 2.65rem;
  align-items: center;
  justify-content: center;
  margin: 1rem auto 0;
  border: 1px solid rgba(255, 116, 31, 0.7);
  border-radius: 999px;
  color: var(--orange);
  font-weight: 900;
}

.outline-cta::after {
  border: 1px solid rgba(255, 116, 31, 0.26);
}

.brief-card {
  display: grid;
  gap: 1rem;
  padding: 1rem;
  border-radius: 1rem;
}

.brief-points h3 {
  margin-bottom: 0.65rem;
  font-size: 1rem;
  line-height: 1.5;
}

.brief-points p,
.brief-points li {
  color: #4f4a42;
  font-size: 0.84rem;
}

.brief-points ul {
  display: grid;
  gap: 0.52rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.brief-points li::before {
  content: "✓";
  display: inline-grid;
  width: 1rem;
  height: 1rem;
  margin-right: 0.42rem;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--orange);
  font-size: 0.7rem;
}

.lead-form {
  display: grid;
  gap: 0.8rem;
}

.lead-form label {
  display: grid;
  grid-template-columns: 6.15rem minmax(0, 1fr);
  align-items: center;
  gap: 0.55rem;
}

.lead-form label span {
  position: relative;
  display: block;
  color: #3d382f;
  font-size: 0.84rem;
  font-weight: 800;
  line-height: 1.35;
  white-space: nowrap;
  text-align: justify;
  text-align-last: justify;
  padding-right: 0.9rem;
}

.lead-form label span::after {
  content: "：";
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  text-align: right;
}

.lead-form input,
.lead-form select {
  width: 100%;
  max-width: 100%;
  min-height: 2.55rem;
  padding: 0 0.78rem;
  border: 1px solid rgba(74, 63, 51, 0.2);
  border-radius: 0.28rem;
  color: #2c2925;
  background: rgba(255, 255, 255, 0.72);
  outline: 0;
}

.lead-form input:focus,
.lead-form select:focus {
  border-color: rgba(255, 116, 31, 0.72);
  box-shadow: 0 0 0 3px rgba(255, 116, 31, 0.12);
}

.code-field {
  grid-template-columns: 6.15rem minmax(0, 1fr) auto;
}

.code-field input {
  grid-column: 2;
}

.code-field button {
  grid-column: 3;
  min-height: 2.55rem;
  padding: 0 0.72rem;
  border: 1px solid rgba(255, 116, 31, 0.68);
  border-radius: 0.28rem;
  color: var(--orange);
  background: #fff8ef;
  font-size: 0.78rem;
  font-weight: 800;
}

.code-field button:disabled,
.submit-button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.submit-button {
  width: 100%;
  min-height: 2.75rem;
  border-radius: 0.3rem;
}

.submit-button.is-complete {
  min-height: 3.2rem;
  padding: 0.5rem 0.85rem;
  font-size: 0.9rem;
  line-height: 1.35;
  white-space: normal;
}

.form-note {
  margin: 0.15rem 0 0;
  color: #66725b;
  font-size: 0.74rem;
  text-align: center;
}

.form-note:empty {
  display: none;
}

.form-note.is-error {
  color: #b42318;
}

.form-note.is-success {
  color: #336f3b;
}

.video-modal[hidden] {
  display: none;
}

.video-modal {
  position: fixed;
  inset: 0;
  z-index: 20;
}

.video-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(10px);
}

.video-modal__dialog {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(calc(100% - 1.6rem), 28rem);
  padding: 0.9rem;
  border-radius: 1rem;
  background: #0f1012;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.38);
  transform: translate(-50%, -50%);
}

.video-modal__close {
  position: absolute;
  top: 0.7rem;
  right: 0.75rem;
  min-width: 3.2rem;
  min-height: 1.9rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.86);
  background: rgba(255, 255, 255, 0.06);
  font-size: 0.74rem;
  font-weight: 800;
}

.video-modal__title {
  margin: 0 3.6rem 0.72rem 0;
  color: #fff;
  font-size: 1rem;
  line-height: 1.4;
}

.video-modal__player {
  display: block;
  width: 100%;
  max-height: min(70vh, 34rem);
  border-radius: 0.75rem;
  background: #000;
}

.clients {
  padding-top: 0.35rem;
  text-align: center;
}

.clients > p {
  max-width: 30rem;
  margin: -0.25rem auto 0.85rem;
  color: #5d574d;
  font-size: 0.82rem;
  line-height: 1.6;
}

.client-wall {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: #fff;
  box-shadow: var(--shadow);
}

.site-footer {
  display: grid;
  gap: 0.85rem;
  padding: 1.05rem 1rem calc(0.95rem + env(safe-area-inset-bottom));
  color: rgba(255, 255, 255, 0.82);
  background: #060708;
}

.footer-quote {
  margin: 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.92rem;
  font-weight: 500;
  line-height: 1.65;
}

.footer-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.12);
}

.footer-contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.75rem;
}

.footer-contact-list {
  display: grid;
  gap: 0.45rem;
}

.footer-contact-item {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  align-items: center;
  gap: 0.5rem;
}

.footer-icon {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border: 1.5px solid rgba(255, 177, 90, 0.9);
  border-radius: 50%;
  color: var(--orange-2);
  font-size: 0.82rem;
  font-weight: 900;
}

.footer-icon svg {
  width: 0.9rem;
  height: 0.9rem;
  fill: currentColor;
}

.footer-contact-item p,
.footer-contact-item a {
  margin: 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: 0.88rem;
  line-height: 1.35;
}

.footer-logo {
  width: 8.5rem;
  max-width: 52vw;
  height: auto;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-top: 0;
  gap: 0.2rem;
  margin-top: -0.8rem;
}

.footer-record-bar {
  margin: 0 -1rem calc(-0.95rem - env(safe-area-inset-bottom));
  min-height: 1.9rem;
  padding: 0.34rem 1rem calc(0.34rem + env(safe-area-inset-bottom));
  border-top: 1px solid rgba(255, 255, 255, 0.4);
  background: #fff;
  text-align: center;
}

.footer-record-bar a {
  color: #5a5a5a;
  font-size: 0.62rem;
  line-height: 1.35;
  text-decoration: none;
}

.footer-qr {
  display: grid;
  gap: 0.08rem;
  justify-items: center;
  transform: translateY(-10px);
}

.footer-qr__image {
  width: 4.68rem;
  height: 4.68rem;
  border-radius: 0.18rem;
  background: #fff;
}

.footer-qr__caption {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.54rem;
  line-height: 1.5;
  text-align: center;
}

@media (min-width: 520px) {
  body {
    background-color: #ddd5c9;
  }

  .hero {
    border-radius: 0;
  }
}

@media (max-width: 360px) {
  .service-grid,
  .advantage-grid,
  .case-strip,
  .client-logos {
    grid-template-columns: 1fr;
  }

  .service-card {
    min-height: 0;
  }
}