:root {
  --navy: #04111f;
  --bay: #0a2f50;
  --ice: #3ca7ff;
  --mist: #e7edf4;
  --gold: #c9a66b;
  --ink: #02070d;
  --muted: #9caebe;
  --line: rgba(143, 194, 229, 0.18);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--ink); }
body {
  margin: 0;
  color: var(--mist);
  background:
    radial-gradient(circle at 50% 6%, rgba(24, 104, 158, .13), transparent 26rem),
    var(--ink);
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }
.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; }
.skip-link { position: fixed; top: -5rem; left: 1rem; z-index: 100; padding: .7rem 1rem; color: #00101d; background: white; border-radius: .35rem; }
.skip-link:focus { top: 1rem; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
}
.site-header.scrolled { background: rgba(2, 7, 13, .82); border-color: var(--line); backdrop-filter: blur(18px); }
.header-inner { width: min(var(--max), calc(100% - 3rem)); min-height: 82px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.wordmark { display: inline-grid; gap: 0; line-height: 1; }
.wordmark-cn { font-family: "STKaiti", "KaiTi", serif; font-size: 1.55rem; letter-spacing: .22em; color: #f1f6fb; }
.wordmark-en { margin-top: .45rem; font-family: Georgia, serif; font-size: .62rem; letter-spacing: .3em; color: #94b7d1; }
.site-nav { display: flex; align-items: center; gap: 2rem; font-size: .9rem; color: #c5d2dc; }
.site-nav a { position: relative; transition: color .2s ease; }
.site-nav a:not(.nav-contact)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -.45rem; height: 1px; background: var(--ice); transition: right .25s ease; }
.site-nav a:hover, .site-nav a:focus-visible { color: white; }
.site-nav a:hover::after, .site-nav a:focus-visible::after { right: 0; }
.nav-contact { padding: .55rem 1.05rem; border: 1px solid rgba(104, 184, 238, .45); border-radius: 999px; background: rgba(20, 96, 150, .14); }
.menu-button { display: none; width: 44px; height: 44px; padding: 10px; border: 0; background: transparent; color: white; }
.menu-button span:not(.sr-only) { display: block; height: 1px; margin: 6px 0; background: currentColor; transition: transform .2s ease, opacity .2s ease; }

.hero { position: relative; min-height: 780px; height: 100svh; overflow: hidden; isolation: isolate; }
.hero-image { position: absolute; inset: 0; z-index: -4; background: url("./assets/office.webp") center 49% / cover no-repeat; transform: scale(1.035); animation: heroBreath 14s ease-in-out infinite alternate; }
.hero-overlay { position: absolute; inset: 0; z-index: -3; background: linear-gradient(90deg, rgba(0, 5, 10, .97) 0%, rgba(1, 9, 17, .88) 38%, rgba(1, 10, 19, .38) 70%, rgba(0, 4, 8, .35) 100%), linear-gradient(180deg, rgba(0,0,0,.25), transparent 45%, rgba(0, 3, 8, .72)); }
.hero-glow { position: absolute; right: 12%; top: 23%; z-index: -1; width: 34rem; height: 34rem; border-radius: 50%; background: radial-gradient(circle, rgba(53, 164, 241, .18), rgba(12, 56, 91, .07) 38%, transparent 70%); filter: blur(20px); }
.hero-inner { width: min(var(--max), calc(100% - 3rem)); height: 100%; margin: auto; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr); align-items: center; gap: 2rem; padding-top: 6rem; }
.hero-copy { max-width: 670px; }
.eyebrow { margin: 0 0 1.15rem; color: #8db5d2; font-size: .72rem; font-weight: 600; letter-spacing: .22em; text-transform: uppercase; }
.eyebrow span { display: inline-block; width: 2.4rem; height: 1px; margin: 0 .8rem .25rem 0; background: linear-gradient(90deg, var(--ice), transparent); }
.hero h1 { max-width: 8em; margin: 0; font-family: "Songti SC", "STSong", serif; font-size: clamp(3.25rem, 6.6vw, 6.4rem); font-weight: 500; line-height: 1.08; letter-spacing: .05em; text-wrap: balance; }
.hero-lead { margin: 1.75rem 0 0; color: #c6d3dd; font-family: "Songti SC", "STSong", serif; font-size: clamp(1.08rem, 1.7vw, 1.35rem); line-height: 1.9; letter-spacing: .06em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2.15rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .75rem; min-height: 50px; padding: .75rem 1.4rem; border: 1px solid transparent; border-radius: 999px; font-size: .92rem; font-weight: 600; letter-spacing: .03em; transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease; }
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button-primary { color: #00101e; background: linear-gradient(120deg, #edf8ff, #72c3fa 55%, #3ca7ff); box-shadow: 0 14px 38px rgba(21, 126, 201, .26); }
.button-primary:hover, .button-primary:focus-visible { box-shadow: 0 18px 48px rgba(43, 153, 229, .38); }
.button-ghost { color: #d9e4ec; border-color: rgba(177, 212, 234, .32); background: rgba(5, 24, 39, .28); backdrop-filter: blur(10px); }
.hero-verification { margin: 1.25rem 0 0; color: #8499a9; font-size: .78rem; letter-spacing: .035em; }
.hero-verification strong { color: #b9d9ee; font-weight: 500; }
.hero-brand { display: grid; place-items: center; }
.hero-brand img { width: min(31vw, 430px); mix-blend-mode: screen; filter: drop-shadow(0 0 34px rgba(48, 164, 240, .28)); opacity: .92; }
.scroll-cue { position: absolute; left: 50%; bottom: 2rem; display: grid; justify-items: center; gap: .55rem; color: #68859b; font-size: .55rem; letter-spacing: .28em; transform: translateX(-50%); }
.scroll-cue i { display: block; width: 1px; height: 34px; background: linear-gradient(var(--ice), transparent); animation: scrollPulse 1.8s ease-in-out infinite; }

.section { width: min(var(--max), calc(100% - 3rem)); margin: 0 auto; padding: 8rem 0; }
.section-heading { display: grid; grid-template-columns: 1.15fr .85fr; column-gap: 4rem; align-items: end; margin-bottom: 3rem; }
.section-heading .eyebrow { grid-column: 1 / -1; }
.section h2, .contact h2 { margin: 0; font-family: "Songti SC", "STSong", serif; font-size: clamp(2.25rem, 4.5vw, 4.5rem); font-weight: 500; line-height: 1.2; letter-spacing: .04em; }
.section-heading > p:last-child { margin: 0 0 .45rem; color: var(--muted); font-size: 1rem; }
.experience-grid { display: grid; grid-template-columns: 1.12fr .88fr; grid-template-rows: repeat(2, 310px); gap: 1rem; }
.scene-card { position: relative; overflow: hidden; min-height: 0; border: 1px solid var(--line); border-radius: 1rem; background: var(--navy); }
.scene-large { grid-row: 1 / 3; }
.scene-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .9s cubic-bezier(.2,.7,.2,1), filter .9s ease; }
.scene-card:hover img { transform: scale(1.045); filter: brightness(1.08); }
.scene-shade { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(0, 7, 13, .88)); }
.scene-content { position: absolute; left: 1.6rem; right: 1.6rem; bottom: 1.45rem; }
.scene-content p { margin: 0 0 .25rem; color: #8cb3cc; font-size: .72rem; letter-spacing: .18em; }
.scene-content h3 { margin: 0; font-family: "Songti SC", "STSong", serif; font-size: 1.25rem; font-weight: 500; letter-spacing: .04em; }
.atmosphere-note { margin: 1rem 0 0; color: #62798a; font-size: .75rem; text-align: right; }

.care { width: 100%; padding: 8rem max(1.5rem, calc((100% - var(--max)) / 2)); background: linear-gradient(145deg, rgba(7, 34, 55, .9), rgba(2, 9, 16, .92)); border-block: 1px solid rgba(112, 168, 205, .12); }
.care-panel { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(3rem, 8vw, 8rem); align-items: start; }
.care-copy { position: sticky; top: 8rem; }
.care-copy > p:last-child { color: var(--muted); font-size: 1.03rem; }
.care-list { border-top: 1px solid var(--line); }
.care-item { display: grid; grid-template-columns: 54px 1fr; gap: 1.25rem; padding: 1.5rem 0; border-bottom: 1px solid var(--line); }
.care-item > span { color: #4aaef2; font-family: Georgia, serif; font-size: .85rem; }
.care-item h3 { margin: 0; font-size: 1.08rem; font-weight: 600; letter-spacing: .06em; }
.care-item p { margin: .35rem 0 0; color: #8599a9; font-size: .9rem; }

.location { padding-top: 7rem; padding-bottom: 7rem; }
.location-heading { margin-bottom: 2.5rem; }
.location-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.location-card { position: relative; min-height: 300px; padding: 2rem; overflow: hidden; border: 1px solid rgba(77, 164, 222, .22); border-radius: 1rem; background: radial-gradient(circle at 100% 0, rgba(45, 157, 225, .12), transparent 42%), linear-gradient(145deg, rgba(7, 31, 50, .95), rgba(2, 10, 18, .97)); }
.location-card::after { content: ""; position: absolute; right: -4rem; bottom: -7rem; width: 14rem; height: 14rem; border: 1px solid rgba(75, 170, 230, .1); border-radius: 50%; }
.location-label { margin: 0 0 1.15rem; color: #78afd2; font-size: .69rem; font-weight: 600; letter-spacing: .17em; }
.location-card h3 { position: relative; z-index: 1; margin: 0 0 .75rem; color: #eaf5fc; font-family: "Songti SC", "STSong", serif; font-size: clamp(1.35rem, 2.2vw, 1.9rem); font-weight: 500; line-height: 1.35; letter-spacing: .025em; }
.location-card > p:not(.location-label) { position: relative; z-index: 1; margin: 0; color: #91a6b5; }
.location-link { position: absolute; z-index: 2; left: 2rem; bottom: 1.8rem; color: #91d4ff; font-size: .85rem; }
.location-link span { margin-left: .35rem; }

.official { padding-top: 7rem; padding-bottom: 7rem; }
.official-card { position: relative; display: grid; grid-template-columns: 150px 1fr; gap: 3.5rem; align-items: center; padding: clamp(2rem, 5vw, 4rem); overflow: hidden; border: 1px solid rgba(77, 164, 222, .25); border-radius: 1.4rem; background: radial-gradient(circle at 6% 50%, rgba(33, 129, 194, .14), transparent 28%), linear-gradient(135deg, rgba(7, 28, 45, .96), rgba(2, 9, 16, .96)); box-shadow: 0 35px 90px rgba(0, 0, 0, .28); }
.official-card::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(115deg, transparent 0 49%, rgba(97, 183, 235, .045) 50%, transparent 51%); }
.shield { display: grid; place-items: center; width: 142px; aspect-ratio: 1; border: 1px solid rgba(97, 186, 243, .28); border-radius: 50%; background: rgba(11, 62, 98, .22); box-shadow: inset 0 0 34px rgba(45, 156, 225, .08), 0 0 55px rgba(18, 113, 179, .08); }
.shield svg { width: 64px; overflow: visible; fill: rgba(16, 84, 127, .34); stroke: #86d1ff; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.official-copy h2 { font-size: clamp(2rem, 4vw, 3.5rem); }
.official-handle { display: inline-flex; align-items: center; gap: 1rem; margin: 1rem 0 1.4rem; color: #9bd8ff; font-family: Georgia, serif; font-size: clamp(1.45rem, 3vw, 2.3rem); letter-spacing: .04em; }
.official-handle span { font-size: 1rem; }
.official-copy > p:not(.eyebrow) { max-width: 760px; margin: .55rem 0; color: #9eafbd; }
.official-copy strong { color: #e5f4ff; }

.contact { position: relative; display: grid; place-items: center; min-height: 570px; padding: 7rem 1.5rem; overflow: hidden; text-align: center; background: radial-gradient(circle at 50% 85%, rgba(36, 135, 199, .16), transparent 33%), linear-gradient(#02070d, #020a12); border-top: 1px solid rgba(110, 170, 208, .12); }
.contact::before, .contact::after { content: ""; position: absolute; left: 50%; border: 1px solid rgba(62, 152, 209, .14); border-radius: 50%; transform: translateX(-50%); }
.contact::before { bottom: -15rem; width: 76rem; height: 32rem; }
.contact::after { bottom: -10rem; width: 51rem; height: 23rem; }
.contact-glow { position: absolute; left: 50%; top: 50%; width: 28rem; height: 28rem; border-radius: 50%; background: radial-gradient(circle, rgba(32, 134, 203, .12), transparent 70%); transform: translate(-50%, -50%); filter: blur(24px); }
.contact-inner { position: relative; z-index: 1; }
.contact-inner > p:not(.eyebrow) { margin: 1rem 0 2rem; color: #8fa3b2; font-size: 1.05rem; }
.contact-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: .8rem; }

.site-footer { width: min(var(--max), calc(100% - 3rem)); margin: auto; padding: 2.4rem 0; display: flex; align-items: end; justify-content: space-between; gap: 2rem; color: #667d8d; font-size: .78rem; }
.site-footer p { margin: .25rem 0; }
.site-footer a { color: #9bc8e5; }
.footer-brand { color: #dce8f0; font-family: "STKaiti", "KaiTi", serif; font-size: 1.1rem; letter-spacing: .14em; }
.footer-brand span { margin-left: .7rem; color: #7a96aa; font-family: Georgia, serif; font-size: .62rem; letter-spacing: .25em; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s cubic-bezier(.22,.75,.24,1); }
.reveal.is-visible { opacity: 1; transform: none; }
@keyframes heroBreath { from { transform: scale(1.035); } to { transform: scale(1.075); } }
@keyframes scrollPulse { 0%,100% { opacity: .25; transform: scaleY(.55); transform-origin: top; } 50% { opacity: 1; transform: scaleY(1); transform-origin: top; } }

@media (max-width: 900px) {
  .header-inner { width: min(100% - 2rem, var(--max)); min-height: 70px; }
  .menu-button { display: block; }
  .site-nav { position: absolute; top: 70px; left: 1rem; right: 1rem; display: grid; gap: 0; padding: .6rem; opacity: 0; visibility: hidden; transform: translateY(-10px); border: 1px solid var(--line); border-radius: .8rem; background: rgba(2, 9, 16, .97); backdrop-filter: blur(18px); transition: opacity .2s ease, transform .2s ease, visibility .2s; }
  .site-nav.open { opacity: 1; visibility: visible; transform: none; }
  .site-nav a { padding: .85rem 1rem; }
  .nav-contact { margin-top: .35rem; text-align: center; }
  .hero { min-height: 760px; height: auto; }
  .hero-inner { min-height: 760px; grid-template-columns: 1fr; padding: 8rem 0 5rem; }
  .hero-copy { align-self: center; }
  .hero-brand { display: none; }
  .hero-overlay { background: linear-gradient(90deg, rgba(0, 5, 10, .96), rgba(1, 10, 19, .72)), linear-gradient(180deg, rgba(0,0,0,.15), transparent 45%, rgba(0,3,8,.78)); }
  .section-heading { grid-template-columns: 1fr; gap: 1rem; }
  .experience-grid { grid-template-columns: 1fr 1fr; grid-template-rows: 560px 300px; }
  .scene-large { grid-column: 1 / -1; grid-row: auto; }
  .care-panel { grid-template-columns: 1fr; }
  .care-copy { position: static; }
  .location-grid { grid-template-columns: 1fr; }
  .location-card { min-height: 270px; }
}

@media (max-width: 620px) {
  .hero-inner, .section, .site-footer { width: min(100% - 2rem, var(--max)); }
  .hero { min-height: 720px; }
  .hero-inner { min-height: 720px; padding-top: 7rem; }
  .hero h1 { max-width: 6em; font-size: clamp(3rem, 14vw, 4.6rem); }
  .hero-lead { font-size: 1rem; }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .hero-verification { line-height: 1.7; }
  .scroll-cue { display: none; }
  .section { padding: 5.8rem 0; }
  .experience-grid { display: grid; grid-template-columns: 1fr; grid-template-rows: none; }
  .scene-card, .scene-large { min-height: 410px; grid-column: auto; grid-row: auto; }
  .care { padding: 5.8rem 1rem; }
  .care-panel { gap: 2rem; }
  .official-card { grid-template-columns: 1fr; gap: 2rem; padding: 1.5rem; }
  .shield { width: 86px; }
  .shield svg { width: 42px; }
  .contact { min-height: 500px; }
  .contact-actions { display: grid; }
  .site-footer { display: grid; align-items: start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}