:root {
  --ink: #101828;
  --muted: #667085;
  --blue: #155eef;
  --blue-deep: #0b2f6b;
  --blue-soft: #eff5ff;
  --paper: #ffffff;
  --line: #dfe5ee;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; background: #fff; }
body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: Inter, "SF Pro Display", "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
button, a { font: inherit; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(24px, 4.8vw, 80px);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(16px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  color: #152348;
  font-weight: 650;
  letter-spacing: .015em;
}
.brand-mark {
  position: relative;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 1px solid #86a8e8;
}
.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  background: #b7cdf6;
}
.brand-mark::before { width: 1px; height: 100%; }
.brand-mark::after { width: 100%; height: 1px; }
.brand-mark i {
  z-index: 1;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 4px #e9f0ff;
}
nav { display: flex; gap: 30px; color: var(--muted); font-size: 13px; }
nav a { position: relative; padding: 5px 0; }
nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--blue);
  transition: right .2s ease;
}
nav a:hover, nav a:focus-visible { color: var(--blue); }
nav a:hover::after, nav a:focus-visible::after { right: 0; }

.hero {
  min-height: 660px;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(360px, .65fr);
  padding: 0 clamp(24px, 4.8vw, 80px);
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 88px clamp(34px, 6vw, 110px) 88px 0;
}
.kicker {
  margin: 0 0 23px;
  color: var(--blue);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: .17em;
}
h1, h2 {
  margin: 0;
  color: #101b38;
  font-weight: 650;
  letter-spacing: -.045em;
}
h1 { max-width: 840px; font-size: clamp(55px, 6.4vw, 96px); line-height: 1.06; }
h2 { font-size: clamp(40px, 4.3vw, 62px); line-height: 1.12; }
.lede {
  max-width: 650px;
  margin: 31px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}
.hero-actions { margin-top: 38px; display: flex; flex-wrap: wrap; gap: 11px; }
.primary, .audio-button {
  min-height: 51px;
  padding: 0 20px;
  border: 1px solid var(--blue);
  cursor: pointer;
  transition: .2s ease;
}
.primary {
  min-width: 190px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background: var(--blue);
  color: #fff;
  box-shadow: 0 9px 24px rgba(21, 94, 239, .14);
}
.primary:hover, .primary:focus-visible { background: #004eeb; transform: translateY(-1px); }
.audio-button {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  color: #1849a9;
}
.audio-button:hover, .audio-button:focus-visible { background: var(--blue-soft); }
.audio-icon { height: 19px; display: flex; align-items: center; gap: 2px; }
.audio-icon i { width: 2px; height: 7px; background: currentColor; }
.audio-icon i:nth-child(2) { height: 14px; }
.audio-icon.is-playing i { animation: meter .8s infinite alternate; }
.audio-icon.is-playing i:nth-child(2) { animation-delay: .25s; }
.audio-icon.is-playing i:nth-child(3) { animation-delay: .45s; }
@keyframes meter { to { height: 18px; } }
.microcopy { margin: 13px 0 0; color: #87909f; font-size: 12px; }

.hero-panel {
  min-width: 0;
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 72px 0 72px clamp(34px, 4vw, 72px);
  border-left: 1px solid var(--line);
  background: #fff;
}
.hero-code { display: flex; flex-direction: column; }
.hero-code span { color: #8b98ad; font-size: 11px; font-weight: 700; letter-spacing: .2em; }
.hero-code b { margin-top: 5px; color: #102e66; font-size: clamp(50px, 5vw, 76px); font-weight: 580; line-height: 1; letter-spacing: -.06em; }
.hero-track {
  height: 160px;
  display: flex;
  align-items: flex-end;
  gap: 8px;
  margin: 48px 0 37px;
  padding-bottom: 13px;
  border-bottom: 1px solid #c8d4e8;
}
.hero-track i {
  width: 7px;
  height: calc(35px + var(--i, 0px));
  background: var(--zone);
  opacity: .95;
}
.hero-track i:nth-child(1) { height: 54px; }
.hero-track i:nth-child(2) { height: 83px; }
.hero-track i:nth-child(3) { height: 122px; }
.hero-track i:nth-child(4) { height: 68px; }
.hero-track i:nth-child(5) { height: 104px; }
.hero-track i:nth-child(6) { height: 137px; }
.hero-track i:nth-child(7) { height: 93px; }
.hero-track i:nth-child(8) { height: 61px; }
.hero-track i:nth-child(9) { height: 113px; }
.hero-track i:nth-child(10) { height: 145px; }
.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.hero-stats span { display: flex; flex-direction: column; color: #7a8698; font-size: 11px; }
.hero-stats b { color: #123675; font-size: 24px; font-weight: 620; }
.hero-panel > p { margin: 38px 0 0; color: #98a2b3; font-size: 9px; letter-spacing: .14em; }

.index-section {
  max-width: 1600px;
  margin: 0 auto;
  padding: 112px clamp(24px, 4.8vw, 80px) 130px;
  background: #fff;
}
.section-heading {
  display: grid;
  grid-template-columns: 1fr minmax(300px, 470px);
  align-items: end;
  gap: 48px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line);
}
.section-heading p:last-child { margin: 0; color: var(--muted); }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 29px 0 38px; }
.filters button {
  min-width: 64px;
  border: 1px solid #cdd6e4;
  border-radius: 3px;
  background: #fff;
  padding: 8px 17px;
  color: #526175;
  cursor: pointer;
  font-size: 13px;
  transition: .18s ease;
}
.filters button:hover, .filters button:focus-visible { border-color: #6e9bf1; color: var(--blue); }
.filters button.active { border-color: var(--blue); background: var(--blue); color: #fff; }
.space-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }
.space-card {
  position: relative;
  min-width: 0;
  overflow: hidden;
  display: block;
  padding: 0 0 108px;
  border: 1px solid var(--line);
  background: #fff;
  text-align: left;
  cursor: pointer;
  transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}
.space-card:hover, .space-card:focus-visible {
  z-index: 2;
  border-color: #9bb9f3;
  box-shadow: 0 22px 52px rgba(23, 58, 121, .11);
  transform: translateY(-4px);
}
.space-card:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
.space-card img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  transition: transform .6s cubic-bezier(.2,.7,.2,1), filter .3s ease;
}
.space-card:hover img, .space-card:focus-visible img { transform: scale(1.025); filter: saturate(.92) contrast(1.02); }
.card-shade {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  aspect-ratio: 4 / 5;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(9, 34, 79, .08), transparent 26%, rgba(4, 27, 67, .2) 100%);
}
.card-number {
  position: absolute;
  top: 17px;
  left: 17px;
  min-width: 38px;
  padding: 7px 8px 6px;
  border-top: 2px solid var(--zone);
  background: rgba(255, 255, 255, .92);
  color: #14366f;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  backdrop-filter: blur(8px);
}
.card-body {
  position: absolute;
  left: 22px;
  right: 76px;
  bottom: 20px;
  min-height: 70px;
  display: flex;
  flex-direction: column;
}
.card-category { color: var(--zone); font-size: 10px; font-weight: 750; letter-spacing: .14em; }
.card-body strong { margin-top: 5px; color: #14213d; font-size: 24px; font-weight: 640; line-height: 1.25; }
.card-body > span:last-child { margin-top: 7px; overflow: hidden; color: var(--muted); font-size: 12px; line-height: 1.5; white-space: nowrap; text-overflow: ellipsis; }
.card-open {
  position: absolute;
  right: 20px;
  bottom: 25px;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid #b9c8e1;
  color: transparent;
  font-size: 0;
}
.card-open b { color: var(--blue); font-size: 17px; font-weight: 400; }

.about {
  display: grid;
  grid-template-columns: .65fr 1.25fr .8fr;
  gap: 58px;
  padding: 112px clamp(24px, 4.8vw, 80px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.about h2 { color: #102e66; font-size: clamp(39px, 3.6vw, 56px); }
.about div > p { max-width: 640px; color: var(--muted); }
.about-facts {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 23px;
  padding-left: 42px;
  border-left: 1px solid var(--line);
}
.about-facts span { display: flex; align-items: baseline; gap: 14px; color: #667085; font-size: 12px; }
.about-facts b { min-width: 63px; color: var(--blue); font-size: 39px; font-weight: 580; }
footer {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px clamp(24px, 4.8vw, 80px);
  background: #fff;
  color: #7f8a9c;
  font-size: 11px;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 22px;
  background: rgba(7, 25, 57, .58);
  backdrop-filter: blur(14px);
}
.modal {
  position: relative;
  width: min(1120px, 96vw);
  max-height: 92vh;
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  overflow: auto;
  border: 1px solid rgba(255, 255, 255, .42);
  background: #fff;
  box-shadow: 0 28px 90px rgba(5, 24, 56, .32);
}
.modal-close {
  position: absolute;
  top: 15px;
  right: 15px;
  z-index: 3;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255,255,255,.72);
  border-radius: 50%;
  background: rgba(7, 29, 68, .45);
  color: #fff;
  font-size: 27px;
  line-height: 1;
  cursor: pointer;
  backdrop-filter: blur(8px);
}
.image-wrap { position: relative; min-height: 580px; background: #0b214c; }
.image-wrap img { width: 100%; height: 100%; min-height: 580px; display: block; object-fit: cover; }
.concept-label {
  position: absolute;
  top: 18px;
  left: 18px;
  padding: 6px 10px;
  border: 1px solid rgba(255,255,255,.36);
  background: rgba(7, 30, 72, .66);
  color: #fff;
  font-size: 10px;
  letter-spacing: .08em;
  backdrop-filter: blur(8px);
}
.modal-content { display: flex; flex-direction: column; padding: 66px 45px 33px; }
.modal-meta { display: flex; flex-wrap: wrap; gap: 10px; color: #6d7c91; font-size: 10px; letter-spacing: .11em; }
.modal-meta span:not(:last-child)::after { content: "·"; margin-left: 10px; }
.modal-content h2 { margin-top: 18px; color: #102e66; font-size: 46px; }
.modal-summary { color: var(--blue); font-size: 18px; }
.modal-content > p:not(.modal-summary) { color: var(--muted); font-size: 14px; }
.observation { margin-top: 10px; padding: 18px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.observation span { color: #1849a9; font-size: 10px; font-weight: 750; letter-spacing: .13em; }
.observation p { margin: 6px 0 0; font-size: 14px; }
.modal-nav { margin-top: auto; padding-top: 28px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.modal-nav button { border: 0; background: transparent; padding: 8px 0; color: var(--blue); cursor: pointer; font-size: 13px; }
.modal-nav span { color: var(--muted); font-size: 11px; }

.lab-panel {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid #bdcbe1;
  border-radius: 6px;
  background: rgba(255,255,255,.96);
  box-shadow: 0 10px 35px rgba(23, 51, 99, .13);
  font-size: 12px;
}
.lab-panel span { margin-right: 4px; color: #1849a9; font-weight: 700; }
.lab-panel button { border: 1px solid var(--line); background: #fff; padding: 5px 8px; cursor: pointer; }

@media (max-width: 1180px) {
  .space-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero { grid-template-columns: minmax(0, 1fr) 330px; }
}
@media (max-width: 850px) {
  .topbar { height: 64px; }
  nav { display: none; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { min-height: 550px; padding: 72px 0; }
  .hero-panel { padding: 55px 0; border-top: 1px solid var(--line); border-left: 0; }
  .section-heading, .about { grid-template-columns: 1fr; }
  .section-heading { align-items: start; }
  .about-facts { padding: 28px 0 0; border-top: 1px solid var(--line); border-left: 0; flex-direction: row; flex-wrap: wrap; justify-content: flex-start; }
  .modal { grid-template-columns: 1fr; }
  .image-wrap, .image-wrap img { min-height: 0; aspect-ratio: 16/9; }
}
@media (max-width: 600px) {
  .brand { font-size: 13px; }
  .brand-mark { width: 27px; height: 27px; }
  h1 { font-size: clamp(46px, 14vw, 62px); }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .primary, .audio-button { width: 100%; justify-content: center; }
  .space-grid { grid-template-columns: 1fr; }
  .space-card { padding-bottom: 110px; }
  .modal-backdrop { padding: 0; }
  .modal { width: 100vw; min-height: 100vh; max-height: 100vh; }
  .modal-content { padding: 36px 25px 25px; }
  .modal-content h2 { font-size: 39px; }
  footer { flex-direction: column; align-items: flex-start; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}