:root {
  --blue: #2568d8;
  --blue-dark: #174b9b;
  --blue-pale: #edf5ff;
  --ink: #18345b;
  --muted: #64758e;
  --line: #dbe8f8;
  --surface: #fff;
  --canvas: #f5f9ff;
  --shadow: 0 14px 40px rgba(39, 90, 165, 0.13);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--canvas); }
body {
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
button, a { min-height: 44px; -webkit-tap-highlight-color: transparent; }
button { color: inherit; font: inherit; }
a:focus-visible, button:focus-visible { outline: 3px solid rgba(37, 104, 216, 0.42); outline-offset: 3px; }
img { display: block; max-width: 100%; }
.skip-link { position: fixed; top: -60px; left: 12px; z-index: 100; padding: 10px 14px; color: #fff; background: var(--blue-dark); }
.skip-link:focus { top: 12px; }
.site-shell { width: min(100%, 820px); min-height: 100dvh; margin: 0 auto; padding-bottom: 84px; overflow: hidden; background: var(--surface); box-shadow: 0 0 0 1px rgba(30, 79, 145, 0.06); }

.hero { position: relative; min-height: 420px; color: #fff; overflow: hidden; }
.hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-shade { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(9, 29, 61, 0.3) 0%, rgba(9, 29, 61, 0.26) 36%, rgba(9, 29, 61, 0.84) 100%); }
.hero-brand { position: absolute; top: 24px; left: 24px; display: flex; flex-direction: column; text-shadow: 0 2px 10px rgba(0, 0, 0, 0.4); }
.hero-brand strong { font-size: 20px; font-weight: 750; letter-spacing: 0.02em; }
.hero-brand span { margin-top: 2px; font-size: 12px; letter-spacing: 0.16em; opacity: 0.86; }
.hero-mark { position: absolute; top: 22px; right: 24px; display: grid; width: 54px; height: 54px; place-items: center; border: 4px solid #fff; border-radius: 50%; background: rgba(37, 104, 216, 0.92); font-size: 25px; font-weight: 800; box-shadow: 0 8px 24px rgba(8, 28, 62, 0.28); }
.hero-copy { position: absolute; right: 24px; bottom: 84px; left: 24px; }
.hero-copy h1 { max-width: 12ch; margin: 0; font-size: clamp(36px, 7vw, 56px); line-height: 1.08; letter-spacing: -0.05em; text-wrap: balance; }
.hero-copy p { margin: 14px 0 18px; font-size: 17px; font-weight: 550; }
.hero-copy ul { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 0; padding: 0; list-style: none; font-size: 13px; font-weight: 650; }
.hero-copy li::before { content: "✓"; display: inline-grid; width: 18px; height: 18px; margin-right: 5px; place-items: center; border: 1px solid rgba(255,255,255,.72); border-radius: 50%; font-size: 11px; }

main { position: relative; z-index: 2; padding: 0 24px 28px; background: radial-gradient(circle at 50% 0, #e4f1ff 0, var(--canvas) 28%, var(--canvas) 100%); }
.summary-card { position: relative; margin-top: -58px; padding: 20px; border-radius: 18px; color: #fff; background: linear-gradient(135deg, #3e8af0 0%, #1c5aca 72%); box-shadow: 0 20px 42px rgba(25, 84, 177, 0.3); }
.summary-main { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.summary-main span { font-size: 12px; opacity: .86; }
.summary-main h2 { margin: 2px 0 0; font-size: 36px; font-variant-numeric: tabular-nums; line-height: 1; }
.summary-main h2 small { margin-left: 4px; font-size: 16px; }
.summary-main a { display: inline-flex; align-items: center; gap: 8px; min-width: 126px; justify-content: center; padding: 0 18px; border-radius: 24px; color: #6d4b0b; background: #fff0c7; font-weight: 800; text-decoration: none; box-shadow: 0 8px 18px rgba(22, 67, 150, .2); transition: transform 180ms ease, background 180ms ease; }
.summary-main a:hover { background: #fff6dd; transform: translateY(-1px); }
.summary-main a:active { transform: scale(.98); }
.summary-facts { display: grid; grid-template-columns: 1.45fr .8fr 1.1fr 1.3fr; gap: 1px; margin-top: 18px; overflow: hidden; border-radius: 12px; background: rgba(45, 101, 196, .35); }
.summary-facts div { min-width: 0; padding: 12px 10px; background: rgba(255,255,255,.95); color: var(--ink); }
.summary-facts span { display: block; color: #4983d8; font-size: 11px; }
.summary-facts strong { display: block; margin-top: 3px; font-size: 12px; line-height: 1.35; }
.summary-card > p { margin: 12px 0 0; color: rgba(255,255,255,.86); font-size: 12px; }

.quick-nav { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; margin: 18px 0 24px; padding: 16px 8px; border-radius: 16px; background: #fff; box-shadow: var(--shadow); }
.quick-nav a { display: flex; min-width: 0; flex-direction: column; align-items: center; justify-content: center; gap: 6px; color: var(--ink); font-size: 11px; font-weight: 650; text-align: center; text-decoration: none; }
.quick-nav a > span { display: grid; width: 28px; height: 28px; place-items: center; color: var(--blue); font-size: 21px; font-weight: 800; }
.quick-nav a:hover { color: var(--blue); }

.gallery { display: grid; gap: 14px; }
.section-title { display: flex; align-items: center; justify-content: center; gap: 16px; margin: 0 0 2px; }
.section-title h2 { margin: 0; font-size: 24px; letter-spacing: -.02em; }
.section-title span { color: #78a9ef; font-weight: 900; letter-spacing: -4px; }
.scene-card { position: relative; display: grid; grid-template-columns: minmax(190px, .8fr) minmax(0, 1.55fr); min-height: 152px; overflow: hidden; border-radius: 15px; background: #fff; box-shadow: 0 8px 25px rgba(38, 85, 150, .09); }
.scene-copy { align-self: center; padding: 18px 18px; }
.scene-copy b { display: inline-grid; width: 30px; height: 26px; place-items: center; border-radius: 5px; color: #fff; background: var(--blue); font-size: 13px; font-variant-numeric: tabular-nums; }
.scene-copy h3 { display: inline; margin: 0 0 0 8px; font-size: 18px; }
.scene-copy ul { margin: 10px 0 0; padding-left: 19px; color: #324b6b; font-size: 13px; }
.scene-copy li::marker { color: #63a1ef; }
.scene-card > img, .scene-media, .scene-media img { width: 100%; height: 100%; min-height: 152px; object-fit: cover; }
.scene-media { position: relative; min-height: 0; padding: 0; border: 0; background: #dce8f6; cursor: pointer; overflow: hidden; }
.scene-media img { transition: transform 240ms ease; }
.scene-media:hover img { transform: scale(1.025); }
.scene-media:active { transform: scale(.995); }
.video-label { position: absolute; right: 10px; bottom: 10px; padding: 5px 9px; border-radius: 6px; color: #fff; background: rgba(16, 62, 130, .84); font-size: 11px; font-weight: 700; backdrop-filter: blur(6px); }
.scene-letter { position: absolute; top: 8px; right: 9px; display: grid; width: 42px; height: 42px; place-items: center; border: 3px solid #fff; border-radius: 50%; color: #fff; background: #275fbd; font-size: 20px; font-weight: 800; box-shadow: 0 5px 14px rgba(14, 55, 122, .2); }

.information, .contact { margin-top: 18px; border-radius: 16px; background: #fff; box-shadow: var(--shadow); }
.information { padding: 20px; }
.information h2 { margin: 0 0 14px; font-size: 20px; }
.information dl { display: grid; grid-template-columns: 1fr 1fr; margin: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.information dl div { display: grid; grid-template-columns: 88px 1fr; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.information dt, .information dd { margin: 0; padding: 10px 9px; font-size: 13px; }
.information dt { color: #3874c9; background: var(--blue-pale); font-weight: 700; }
.information dd { color: #2c435f; }
.information dl div:last-child { grid-column: 1 / -1; }
.contact { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px; }
.contact span { color: var(--blue); font-size: 12px; font-weight: 700; }
.contact h2 { margin: 3px 0 4px; font-size: 21px; }
.contact p { margin: 0; color: var(--muted); font-size: 13px; }
.contact a { display: inline-flex; align-items: center; justify-content: center; flex: 0 0 auto; padding: 0 20px; border-radius: 8px; color: #fff; background: var(--blue); font-weight: 750; text-decoration: none; transition: transform 180ms ease, background 180ms ease; }
.contact a:hover { background: var(--blue-dark); transform: translateY(-1px); }
.contact a:active { transform: scale(.98); }

footer { display: flex; flex-direction: column; gap: 4px; padding: 26px 24px 30px; color: #66788e; background: #edf4fc; font-size: 12px; }
footer strong { color: var(--ink); font-size: 15px; }
footer p { margin: 8px 0 0; padding-top: 10px; border-top: 1px solid #d7e5f5; color: #3e5c7d; }
.sticky-contact { position: fixed; right: 0; bottom: 0; left: 0; z-index: 40; display: grid; grid-template-columns: 120px minmax(0, 430px); justify-content: center; gap: 8px; padding: 8px max(12px, env(safe-area-inset-right)) calc(8px + env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left)); border-top: 1px solid #dce8f5; background: rgba(255,255,255,.96); backdrop-filter: blur(12px); }
.sticky-contact span, .sticky-contact a { display: flex; align-items: center; justify-content: center; border-radius: 8px; }
.sticky-contact span { color: var(--blue); background: var(--blue-pale); font-size: 12px; }
.sticky-contact a { color: #fff; background: linear-gradient(135deg, #3d8aee, #1758c4); font-weight: 750; text-decoration: none; }

.video-player-modal { width: min(92vw, 760px); padding: 0; border: 0; border-radius: 18px; color: var(--ink); background: transparent; }
.video-player-modal::backdrop { background: rgba(7, 20, 39, .76); backdrop-filter: blur(5px); }
.video-player-panel { overflow: hidden; border-radius: 18px; background: #fff; box-shadow: 0 24px 70px rgba(0,0,0,.28); }
.video-player-panel header { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; }
.video-player-panel header button { display: grid; width: 44px; padding: 0; place-items: center; border: 0; border-radius: 50%; color: var(--ink); background: var(--blue-pale); font-size: 28px; cursor: pointer; }
.video-player-panel video { display: block; width: 100%; max-height: 72vh; background: #081322; }
.video-player-panel > p { margin: 0; padding: 12px 16px 16px; color: var(--muted); font-size: 12px; }
.video-player-modal.is-open { position: fixed; inset: 0; display: grid; max-width: none; max-height: none; place-items: center; background: rgba(7,20,39,.76); }

@media (max-width: 640px) {
  .hero { min-height: 390px; }
  .hero-brand { top: 18px; left: 18px; }
  .hero-brand strong { font-size: 16px; }
  .hero-mark { top: 16px; right: 18px; width: 48px; height: 48px; font-size: 21px; }
  .hero-copy { right: 18px; bottom: 78px; left: 18px; }
  .hero-copy h1 { font-size: 35px; }
  .hero-copy p { font-size: 15px; }
  .hero-copy ul { gap: 7px 10px; font-size: 11px; }
  main { padding-right: 12px; padding-left: 12px; }
  .summary-card { padding: 16px 12px; border-radius: 16px; }
  .summary-main h2 { font-size: 30px; }
  .summary-main a { min-width: 108px; padding: 0 12px; font-size: 14px; }
  .summary-facts { grid-template-columns: 1fr 1fr; }
  .quick-nav { grid-template-columns: repeat(4, 1fr); row-gap: 12px; padding: 14px 4px; }
  .scene-card { grid-template-columns: minmax(128px, .86fr) minmax(0, 1.5fr); min-height: 126px; border-radius: 13px; }
  .scene-copy { padding: 13px 10px; }
  .scene-copy b { width: 25px; height: 23px; font-size: 11px; }
  .scene-copy h3 { margin-left: 5px; font-size: 15px; }
  .scene-copy ul { margin-top: 7px; padding-left: 16px; font-size: 11px; line-height: 1.55; }
  .scene-card > img, .scene-media, .scene-media img { min-height: 126px; }
  .scene-letter { width: 35px; height: 35px; font-size: 16px; }
  .video-label { right: 6px; bottom: 6px; font-size: 9px; }
  .information { padding: 16px 12px; }
  .information dl { grid-template-columns: 1fr; }
  .information dl div:last-child { grid-column: auto; }
  .information dl div { grid-template-columns: 78px 1fr; }
  .information dt, .information dd { padding: 9px 7px; font-size: 11px; }
  .contact { padding: 18px 14px; }
  .contact h2 { font-size: 17px; }
  .contact a { padding: 0 14px; font-size: 13px; }
  .sticky-contact { grid-template-columns: 90px minmax(0, 1fr); }
}

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