@font-face {
  font-family: "HarmonyOS Sans SC";
  src: url("./assets/HarmonyOS_Sans_SC_Regular.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "HarmonyOS Sans SC";
  src: url("./assets/HarmonyOS_Sans_SC_Medium.ttf") format("truetype");
  font-style: normal;
  font-weight: 500 700;
  font-display: swap;
}

:root {
  color-scheme: light;
  --brand: #0757b8;
  --brand-deep: #063d87;
  --ink: #102d52;
  --muted: #596e88;
  --line: rgba(7, 87, 184, 0.18);
  --page-gutter: clamp(28px, 5.8vw, 112px);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

html {
  background: #ffffff;
}

body {
  color: var(--ink);
  background: #ffffff;
  font-family: "HarmonyOS Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

.page-shell {
  min-height: 100dvh;
  display: grid;
  grid-template-rows: 94px minmax(620px, 1fr) 124px;
  overflow: hidden;
}

.site-header {
  position: relative;
  z-index: 10;
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid rgba(16, 45, 82, 0.055);
}

.site-header__inner,
.maintenance,
.site-footer {
  width: min(100% - (var(--page-gutter) * 2), 1440px);
  margin-inline: auto;
}

.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  width: 36px;
  height: 60px;
  display: block;
}

.header-hotline {
  display: inline-flex;
  align-items: baseline;
  gap: 22px;
  color: #283c58;
  font-size: 15px;
  letter-spacing: 0.02em;
}

.header-hotline strong {
  color: var(--brand);
  font-size: clamp(21px, 1.55vw, 28px);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.maintenance {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: minmax(460px, 0.9fr) minmax(600px, 1.1fr);
  align-items: center;
  gap: clamp(32px, 3.2vw, 68px);
  padding-block: 46px;
}

.maintenance::before {
  content: "";
  position: fixed;
  z-index: -1;
  inset: 94px 0 124px;
  background:
    radial-gradient(circle at 74% 45%, rgba(130, 190, 231, 0.19), transparent 37%),
    linear-gradient(112deg, #ffffff 0%, #f8fbfe 43%, #edf6fc 72%, #dcecf8 100%);
}

.maintenance__copy {
  position: relative;
  z-index: 3;
  min-width: 0;
  align-self: center;
  padding-bottom: 3%;
}

.maintenance h1 {
  margin: 0;
  color: var(--brand-deep);
  font-size: clamp(44px, 3.15vw, 62px);
  font-weight: 400;
  line-height: 1.18;
  letter-spacing: -0.035em;
}

.maintenance h1 span {
  display: block;
  margin-bottom: 15px;
  color: var(--brand-deep);
  font-size: 1.18em;
  font-weight: 700;
  letter-spacing: 0.015em;
}

.maintenance__copy > p {
  margin: 38px 0 0;
  color: #233c5c;
  font-size: clamp(17px, 1.35vw, 22px);
  line-height: 2.05;
  letter-spacing: 0.025em;
}

.soundfield {
  position: relative;
  z-index: 2;
  width: min(48vw, 660px);
  aspect-ratio: 1;
  justify-self: end;
  isolation: isolate;
}

.soundfield__glow,
.soundfield__orbit,
.soundfield__ticks,
.soundfield__wave,
.soundfield__core {
  position: absolute;
  border-radius: 50%;
}

.soundfield__glow {
  inset: 6%;
  background: radial-gradient(circle, rgba(45, 143, 213, 0.26) 0%, rgba(116, 191, 236, 0.12) 41%, rgba(143, 205, 240, 0) 72%);
  filter: blur(20px);
  animation: breathe 6.5s ease-in-out infinite;
}

.soundfield__orbit {
  border: 1px solid var(--line);
  box-shadow: inset 0 0 28px rgba(255, 255, 255, 0.72), 0 0 26px rgba(44, 134, 201, 0.07);
}

.soundfield__orbit--outer {
  inset: 1%;
  border-color: rgba(255, 255, 255, 0.92);
  outline: 1px solid rgba(7, 87, 184, 0.11);
  outline-offset: -15px;
}

.soundfield__orbit--middle {
  inset: 14%;
  border-color: rgba(7, 87, 184, 0.22);
  outline: 1px solid rgba(255, 255, 255, 0.82);
  outline-offset: 10px;
}

.soundfield__orbit--inner {
  inset: 27%;
  border-color: rgba(7, 87, 184, 0.31);
  outline: 1px solid rgba(255, 255, 255, 0.88);
  outline-offset: 6px;
}

.soundfield__ticks {
  inset: 8%;
  opacity: 0.38;
  background: repeating-conic-gradient(from 0deg, rgba(7, 87, 184, 0.26) 0 0.15deg, transparent 0.15deg 2deg);
  -webkit-mask: radial-gradient(circle, transparent 0 75%, #000 75.2% 76%, transparent 76.2%);
  mask: radial-gradient(circle, transparent 0 75%, #000 75.2% 76%, transparent 76.2%);
  animation: rotate 28s linear infinite;
}

.soundfield__wave {
  z-index: -1;
  top: 32%;
  left: -47%;
  width: 194%;
  height: 36%;
  border-radius: 48%;
  background: repeating-radial-gradient(ellipse at center, transparent 0 12px, rgba(255, 255, 255, 0.84) 12.7px 13.8px, transparent 14.5px 22px);
  filter: drop-shadow(0 0 3px rgba(49, 129, 194, 0.14));
  -webkit-mask: linear-gradient(90deg, transparent, #000 13%, #000 87%, transparent);
  mask: linear-gradient(90deg, transparent, #000 13%, #000 87%, transparent);
  transform: scaleY(0.58);
}

.soundfield__wave--two {
  opacity: 0.55;
  transform: scaleY(0.38) rotate(180deg);
}

.soundfield__core {
  inset: 33%;
  z-index: 2;
  background:
    radial-gradient(circle at 31% 24%, rgba(255, 255, 255, 0.98) 0 4%, rgba(255, 255, 255, 0.3) 11%, transparent 27%),
    repeating-radial-gradient(circle at 58% 51%, rgba(255, 255, 255, 0.11) 0 1px, transparent 1.5px 6px),
    radial-gradient(circle at 38% 32%, #87c9f1 0%, #2a8bd0 32%, var(--brand) 64%, #052e68 100%);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow:
    inset -24px -28px 46px rgba(1, 24, 66, 0.38),
    inset 15px 11px 26px rgba(255, 255, 255, 0.28),
    0 0 0 14px rgba(255, 255, 255, 0.22),
    0 24px 70px rgba(18, 107, 177, 0.38);
  animation: float 7s ease-in-out infinite;
}

.soundfield__core::after {
  content: "";
  position: absolute;
  top: 50%;
  left: -92%;
  width: 284%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.95) 24%, #ffffff 50%, rgba(255, 255, 255, 0.95) 76%, transparent);
  box-shadow: 0 0 7px rgba(255, 255, 255, 0.95);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  padding-bottom: max(4px, env(safe-area-inset-bottom));
  background: #ffffff;
}

.contact-list {
  display: flex;
  align-items: center;
  gap: 28px;
  margin: 0;
  color: #203956;
  font-size: 16px;
  font-style: normal;
}

.contact-list a {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  transition: color 180ms ease;
}

.contact-list a:hover,
.contact-list a:focus-visible,
.header-hotline:hover,
.header-hotline:focus-visible {
  color: var(--brand);
}

.contact-list a:focus-visible,
.header-hotline:focus-visible {
  outline: 3px solid rgba(7, 87, 184, 0.25);
  outline-offset: 5px;
}

.contact-list svg {
  width: 23px;
  height: 23px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.65;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.contact-list__divider {
  width: 1px;
  height: 24px;
  background: #cbd5e0;
}

.footer-signature {
  display: flex;
  align-items: center;
  gap: 32px;
  color: #203956;
  white-space: nowrap;
}

.footer-signature::before {
  content: "";
  width: 1px;
  height: 28px;
  background: #cbd5e0;
}

.footer-signature > span {
  font-size: 16px;
  letter-spacing: 0.04em;
}

.footer-signature small {
  color: #8391a4;
  font-size: 11px;
}

@keyframes rotate {
  to { transform: rotate(360deg); }
}

@keyframes breathe {
  50% { transform: scale(1.07); opacity: 0.72; }
}

@keyframes float {
  50% { transform: translateY(-9px) scale(1.015); }
}

@media (max-width: 1199px) {
  :root {
    --page-gutter: clamp(30px, 4vw, 64px);
  }

  .page-shell {
    grid-template-rows: 88px minmax(560px, 1fr) 112px;
  }

  .maintenance {
    grid-template-columns: minmax(350px, 0.9fr) minmax(430px, 1.1fr);
  }

  .maintenance::before {
    inset: 88px 0 112px;
  }

  .soundfield {
    width: min(49vw, 540px);
  }

  .footer-signature small {
    display: none;
  }
}

@media (max-width: 767px) {
  :root {
    --page-gutter: 24px;
  }

  .page-shell {
    min-height: 100dvh;
    grid-template-rows: 76px auto auto;
    overflow: visible;
  }

  .brand-logo {
    width: 29px;
    height: 48px;
  }

  .header-hotline span {
    display: none;
  }

  .header-hotline strong {
    font-size: 19px;
  }

  .maintenance {
    width: 100%;
    grid-template-columns: 1fr;
    gap: 12px;
    overflow: hidden;
    padding: 76px var(--page-gutter) 38px;
    text-align: center;
  }

  .maintenance::before {
    position: absolute;
    inset: 0;
    background:
      radial-gradient(circle at 50% 68%, rgba(130, 190, 231, 0.2), transparent 34%),
      linear-gradient(160deg, #f8fbfe 0%, #eef7fd 59%, #e4f1fa 100%);
  }

  .maintenance__copy {
    padding: 0;
  }

  .maintenance h1 {
    font-size: clamp(29px, 8vw, 36px);
    line-height: 1.22;
    letter-spacing: -0.045em;
  }

  .maintenance h1 span {
    margin-bottom: 13px;
    font-size: 1.48em;
  }

  .maintenance__copy > p {
    margin-top: 30px;
    font-size: clamp(15px, 4.1vw, 18px);
    line-height: 2;
    letter-spacing: 0;
    white-space: nowrap;
  }

  .soundfield {
    width: min(142vw, 590px);
    justify-self: center;
    margin: 10px -21vw 0;
  }

  .soundfield__wave {
    left: -29%;
    width: 158%;
  }

  .site-footer {
    width: 100%;
    align-items: stretch;
    flex-direction: column;
    gap: 28px;
    padding: 34px var(--page-gutter) max(34px, env(safe-area-inset-bottom));
  }

  .contact-list {
    width: min(100%, 520px);
    margin-inline: auto;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    font-size: 16px;
  }

  .contact-list a {
    min-height: 64px;
    padding-inline: 6px;
  }

  .contact-list__divider {
    width: 100%;
    height: 1px;
  }

  .footer-signature {
    width: min(100%, 520px);
    margin-inline: auto;
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding-top: 8px;
  }

  .footer-signature::before {
    display: none;
  }

  .footer-signature > span {
    font-size: 15px;
  }

  .footer-signature small {
    display: block;
  }
}

@media (max-width: 390px) {
  .maintenance__copy > p {
    font-size: 14px;
  }

  .header-hotline strong {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}