:root {
  --navy: #062a5c;
  --ink: #0a1f3d;
  --blue: #006fb9;
  --sky: #34a8df;
  --aqua: #8be1df;
  --cream: #f5f7f8;
  --line: rgba(7, 42, 92, 0.16);
  --white: #ffffff;
  --shadow: 0 22px 50px rgba(3, 25, 57, 0.14);
  color: var(--ink);
  background: var(--cream);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--cream); }
button, input { font: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.site-shell { overflow: clip; }
.container { width: min(1180px, calc(100% - 80px)); margin: 0 auto; }
.eyebrow { margin: 0 0 18px; color: var(--blue); font-size: 0.7rem; font-weight: 800; letter-spacing: 0.18em; text-transform: uppercase; }
.eyebrow--light { color: var(--aqua); }
.section-head { display: grid; grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr); gap: 50px; align-items: end; margin-bottom: 68px; }
.section-title { margin: 0; max-width: 630px; color: var(--ink); font-size: clamp(2.1rem, 4.3vw, 4.45rem); font-weight: 750; letter-spacing: -0.065em; line-height: 0.96; }
.section-intro { max-width: 565px; margin: 0 0 4px; color: #52667f; font-size: 1rem; line-height: 1.85; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 48px; padding: 0 22px; border: 1px solid transparent; border-radius: 0; font-size: 0.9rem; font-weight: 800; letter-spacing: 0.03em; transition: transform .25s ease, background-color .25s ease, border-color .25s ease; }
.button:hover { transform: translateY(-3px); }
.button--primary { color: var(--white); background: var(--blue); }
.button--light { color: var(--navy); background: var(--white); }
.button--outline { color: var(--white); border-color: rgba(255,255,255,.52); }
.button svg { width: 17px; height: 17px; }

.topbar { position: fixed; z-index: 50; top: 0; left: 0; width: 100%; color: white; border-bottom: 1px solid rgba(255,255,255,.15); transition: background-color .35s ease, box-shadow .35s ease, color .35s ease; }
.topbar.is-scrolled { color: var(--ink); background: rgba(255,255,255,.95); box-shadow: 0 7px 26px rgba(3,25,57,.08); backdrop-filter: blur(12px); }
.topbar__inner { display: flex; align-items: center; justify-content: space-between; gap: 26px; min-height: 76px; }
.brand { display: flex; flex: 0 0 auto; align-items: center; gap: 12px; }
.brand img { width: 42px; height: 42px; object-fit: contain; }
.brand__wordmark { display: grid; line-height: 1; }
.brand__zh { font-size: 1.1rem; font-weight: 800; letter-spacing: .06em; }
.brand__en { margin-top: 4px; font-size: .69rem; letter-spacing: .09em; opacity: .8; }
.site-nav { display: flex; align-items: center; justify-content: center; gap: clamp(14px, 1.8vw, 27px); font-size: .76rem; font-weight: 700; }
.site-nav a { position: relative; padding: 30px 0 28px; opacity: .86; transition: opacity .2s ease; }
.site-nav a::after { position: absolute; right: 0; bottom: 0; left: 0; height: 2px; content: ""; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform .25s ease; }
.site-nav a:hover, .site-nav a.is-active { opacity: 1; }
.site-nav a:hover::after, .site-nav a.is-active::after { transform: scaleX(1); transform-origin: left; }
.language-switch { display: inline-flex; align-items: center; gap: 8px; padding: 8px 0; font-size: .74rem; font-weight: 800; letter-spacing: .07em; }
.language-switch svg { width: 15px; height: 15px; }
.nav-toggle { display: none; width: 42px; height: 42px; padding: 0; color: inherit; background: transparent; border: 0; }
.nav-toggle svg { width: 24px; height: 24px; }

.hero { position: relative; min-height: 100svh; color: white; background: var(--navy); isolation: isolate; }
.hero-media, .hero-overlay { position: absolute; inset: 0; }
.hero-media { background-position: 92% center; background-repeat: no-repeat; background-size: 145% auto; opacity: 0; transform: scale(1.045); transition: opacity 1s ease, transform 7s ease; }
.hero-media.is-active { opacity: 1; transform: scale(1); }
.hero-overlay { z-index: 1; background: linear-gradient(90deg, rgba(2,19,45,.96) 0%, rgba(2,19,45,.82) 39%, rgba(2,19,45,.12) 76%), linear-gradient(0deg, rgba(2,19,45,.44), transparent 48%); }
.hero .container { position: relative; z-index: 2; display: flex; align-items: flex-end; min-height: 100svh; padding-top: 106px; padding-bottom: 70px; }
.hero-copy { width: min(590px, 100%); padding-left: 24px; border-left: 1px solid rgba(255,255,255,.58); }
.hero-label { display: flex; gap: 10px; align-items: center; margin: 0 0 21px; color: rgba(255,255,255,.88); font-size: .72rem; font-weight: 800; letter-spacing: .17em; text-transform: uppercase; }
.hero-label::before { width: 34px; height: 1px; content: ""; background: var(--aqua); }
.hero-title { margin: 0; max-width: 560px; font-size: clamp(3.1rem, 7.4vw, 7.4rem); font-weight: 800; letter-spacing: -0.09em; line-height: .86; text-wrap: balance; }
.hero-subtitle { max-width: 420px; margin: 25px 0 0; font-size: clamp(.96rem, 1.6vw, 1.16rem); line-height: 1.72; color: rgba(255,255,255,.9); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 35px; }
.hero-deck { position: absolute; z-index: 3; right: max(40px, calc((100vw - 1180px) / 2)); bottom: 72px; display: flex; align-items: center; gap: 12px; }
.hero-deck__current { font-size: .8rem; font-weight: 800; letter-spacing: .15em; }
.hero-deck__line { width: 86px; height: 1px; background: rgba(255,255,255,.35); }
.hero-dots { display: flex; gap: 8px; }
.hero-dot { width: 22px; height: 22px; padding: 0; border: 0; background: transparent; }
.hero-dot::after { display: block; width: 100%; height: 2px; content: ""; background: rgba(255,255,255,.45); transition: background-color .25s ease, transform .25s ease; }
.hero-dot.is-active::after { background: var(--aqua); transform: scaleX(1.2); }

.intro-band { position: relative; padding: 116px 0 108px; background: var(--cream); }
.intro-band::before { position: absolute; top: 0; right: 7%; width: 1px; height: 124px; content: ""; background: var(--line); }
.advantage-list { border-top: 1px solid var(--line); }
.advantage { display: grid; grid-template-columns: 90px minmax(220px, .95fr) minmax(0, 1.65fr); gap: 30px; align-items: start; padding: 34px 0 37px; border-bottom: 1px solid var(--line); transition: padding .3s ease, background-color .3s ease; }
.advantage:hover { padding-right: 20px; padding-left: 20px; background: rgba(255,255,255,.58); }
.advantage__index { color: var(--blue); font-size: .75rem; font-weight: 800; letter-spacing: .11em; }
.advantage h3 { margin: 0; font-size: clamp(1.4rem, 2.3vw, 2.15rem); font-weight: 750; letter-spacing: -.055em; line-height: 1.1; }
.advantage p { max-width: 570px; margin: 0; color: #52667f; font-size: .95rem; line-height: 1.85; }

.services { position: relative; padding: 124px 0; color: white; background: #05265a; }
.services::after { position: absolute; inset: auto -18vw -45vw auto; width: 65vw; height: 65vw; content: ""; border: 1px solid rgba(143,225,223,.18); border-radius: 50%; }
.services .section-title { color: white; }
.services .section-intro { color: rgba(255,255,255,.68); }
.service-list { position: relative; z-index: 1; border-top: 1px solid rgba(255,255,255,.2); }
.service { display: grid; grid-template-columns: 118px minmax(285px, 1fr) minmax(0, 1.35fr) 46px; gap: 26px; align-items: center; padding: 32px 0; border-bottom: 1px solid rgba(255,255,255,.2); transition: padding .3s ease, color .3s ease; }
.service:hover { padding-right: 14px; padding-left: 14px; color: var(--aqua); }
.service__no { color: var(--aqua); font-size: 1rem; font-weight: 800; letter-spacing: .08em; }
.service h3 { margin: 0; color: inherit; font-size: clamp(1.32rem, 2.5vw, 2.15rem); font-weight: 720; letter-spacing: -.05em; }
.service p { max-width: 560px; margin: 0; color: rgba(255,255,255,.69); font-size: .9rem; line-height: 1.75; }
.service__arrow { width: 36px; height: 36px; padding: 0; color: currentColor; background: transparent; border: 1px solid rgba(255,255,255,.35); border-radius: 50%; transition: transform .25s ease, background .25s ease; }
.service:hover .service__arrow { color: var(--navy); background: var(--aqua); transform: rotate(-45deg); }
.service__arrow svg { width: 18px; height: 18px; }

.about { padding: 120px 0; background: white; }
.about-layout { display: grid; grid-template-columns: minmax(250px, .85fr) minmax(0, 1.6fr); gap: clamp(54px, 10vw, 160px); }
.about-mark { position: sticky; top: 122px; align-self: start; }
.about-mark__logo { display: block; width: clamp(110px, 14vw, 175px); height: auto; margin-bottom: 4px; }
.about-mark__line { width: 100%; max-width: 265px; height: 1px; margin: 37px 0 18px; background: var(--line); }
.about-mark__copy { max-width: 290px; margin: 0; color: #66788e; font-size: .83rem; line-height: 1.8; }
.about-story { display: grid; gap: 0; }
.story { padding: 0 0 47px; }
.story + .story { padding-top: 43px; border-top: 1px solid var(--line); }
.story__kicker { margin: 0 0 13px; color: var(--blue); font-size: .72rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.story h3 { margin: 0; font-size: clamp(1.55rem, 3vw, 2.7rem); font-weight: 740; letter-spacing: -.06em; line-height: 1.05; }
.story p { max-width: 720px; margin: 20px 0 0; color: #4e637e; font-size: 1rem; line-height: 1.9; }

.library { position: relative; padding: 118px 0 0; color: white; background: linear-gradient(122deg, #063064, #021b43 62%, #04508a); }
.library::before { position: absolute; inset: 0; pointer-events: none; content: ""; background-image: radial-gradient(rgba(139,225,223,.24) 1px, transparent 1px); background-size: 22px 22px; mask-image: linear-gradient(90deg, black, transparent 75%); }
.library .section-head { position: relative; z-index: 1; }
.library .section-title { color: white; }
.library .section-intro { color: rgba(255,255,255,.72); }
.search-stage { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(265px, .75fr); min-height: 380px; }
.search-main { padding: 60px clamp(30px, 6vw, 76px); background: white; color: var(--ink); }
.search-main h3 { max-width: 480px; margin: 0; font-size: clamp(1.8rem, 3.6vw, 3.25rem); font-weight: 740; letter-spacing: -.07em; line-height: 1; }
.search-main p { max-width: 520px; margin: 21px 0 32px; color: #607187; font-size: .94rem; line-height: 1.8; }
.search-control { display: flex; align-items: center; padding: 6px 7px 6px 18px; border: 1px solid rgba(6,42,92,.22); background: #fbfcfd; }
.search-control svg { width: 20px; height: 20px; color: var(--blue); }
.search-control input { width: 100%; min-width: 0; padding: 12px; color: var(--ink); background: transparent; border: 0; outline: 0; }
.search-control button { flex: 0 0 auto; min-height: 41px; padding: 0 17px; color: white; background: var(--blue); border: 0; font-size: .8rem; font-weight: 800; }
.search-result { min-height: 25px; margin: 14px 0 0; color: var(--blue); font-size: .78rem; font-weight: 700; }
.search-side { display: flex; flex-direction: column; justify-content: end; padding: 35px clamp(30px, 5vw, 60px); background: rgba(0,27,63,.64); }
.search-side__label { margin: 0 0 18px; color: var(--aqua); font-size: .7rem; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.category-list { display: flex; flex-wrap: wrap; gap: 8px; }
.category-list button { padding: 9px 11px; color: white; background: transparent; border: 1px solid rgba(255,255,255,.35); font-size: .78rem; transition: color .2s, background .2s; }
.category-list button:hover, .category-list button.is-hidden { color: var(--navy); background: var(--aqua); }
.library-footer { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 30px; min-height: 98px; }
.library-footer p { margin: 0; color: rgba(255,255,255,.65); font-size: .83rem; }

.dialogue { position: relative; min-height: 720px; padding: 130px 0; color: white; background: #061a37; overflow: hidden; }
.dialogue::before { position: absolute; top: -16%; right: -11%; width: min(68vw, 880px); aspect-ratio: 1; content: ""; border: 1px solid rgba(139,225,223,.55); border-radius: 50%; box-shadow: 0 0 0 58px rgba(139,225,223,.07), 0 0 0 116px rgba(139,225,223,.04), 0 0 80px rgba(80,210,211,.2); }
.dialogue::after { position: absolute; top: 0; right: 0; bottom: 0; width: 50%; content: ""; opacity: .42; background: repeating-linear-gradient(111deg, transparent 0 48px, rgba(139,225,223,.22) 49px 50px, transparent 51px 94px); mask-image: linear-gradient(90deg, transparent, black); }
.dialogue .container { position: relative; z-index: 1; }
.dialogue-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(185px, .38fr); gap: 60px; align-items: end; }
.dialogue .section-title { max-width: 710px; color: white; }
.dialogue-copy { max-width: 650px; margin: 30px 0 35px; color: rgba(255,255,255,.76); font-size: 1rem; line-height: 1.9; }
.dialogue-side { padding-bottom: 10px; }
.dialogue-side__quote { margin: 0; color: var(--aqua); font-size: 1.5rem; font-weight: 700; letter-spacing: -.05em; line-height: 1.28; }
.dialogue-side__rule { width: 46px; height: 2px; margin: 25px 0 16px; background: var(--aqua); }
.dialogue-side__caption { margin: 0; color: rgba(255,255,255,.55); font-size: .75rem; line-height: 1.7; }

.insights { padding: 118px 0; background: var(--cream); }
.insights-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(260px, .6fr); gap: 70px; align-items: start; }
.insight-stream { border-top: 1px solid var(--line); }
.insight-item { display: grid; grid-template-columns: 88px minmax(0, 1fr) 28px; gap: 25px; align-items: center; padding: 28px 0; border-bottom: 1px solid var(--line); transition: padding .25s ease; }
.insight-item:hover { padding-right: 12px; padding-left: 12px; background: rgba(255,255,255,.58); }
.insight-item__type { color: var(--blue); font-size: .71rem; font-weight: 800; letter-spacing: .08em; }
.insight-item h3 { margin: 0; font-size: clamp(1.15rem, 2vw, 1.55rem); font-weight: 720; letter-spacing: -.04em; }
.insight-item svg { width: 19px; height: 19px; color: var(--blue); }
.insights-aside { padding-top: 16px; }
.insights-aside h3 { margin: 0; color: var(--blue); font-size: .72rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.insights-aside p { margin: 19px 0 31px; color: #52667f; font-size: .95rem; line-height: 1.85; }
.insights-aside__block { margin-top: 37px; padding-top: 20px; border-top: 1px solid var(--line); }
.insights-aside__block strong { display: block; margin-bottom: 7px; color: var(--ink); font-size: 1.25rem; }
.insights-aside__block span { color: #62758d; font-size: .84rem; line-height: 1.7; }

.contact { position: relative; padding: 120px 0 62px; color: white; background: #042153; }
.contact::before { position: absolute; top: 0; left: 0; width: 100%; height: 1px; content: ""; background: rgba(139,225,223,.52); }
.contact-top { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(250px, .85fr); gap: clamp(55px, 10vw, 150px); padding-bottom: 100px; }
.contact .section-title { color: white; }
.contact-copy { max-width: 655px; margin: 29px 0 0; color: rgba(255,255,255,.72); font-size: 1rem; line-height: 1.9; }
.contact-note { margin: 32px 0 0; color: var(--aqua); font-size: .9rem; font-weight: 700; line-height: 1.8; }
.contact-qr-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; align-items: start; }
.qr { margin: 0; }
.qr__image { padding: 9px; background: white; }
.qr__image img { width: 100%; aspect-ratio: 1; object-fit: cover; }
.qr figcaption { margin-top: 13px; color: white; font-size: .88rem; font-weight: 800; }
.qr figcaption span { display: block; margin-top: 4px; color: rgba(255,255,255,.55); font-size: .68rem; font-weight: 500; letter-spacing: .04em; }
.footer { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; padding-top: 30px; border-top: 1px solid rgba(255,255,255,.17); }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand img { width: 42px; height: 42px; object-fit: contain; }
.footer-brand strong { display: block; font-size: .96rem; letter-spacing: .05em; }
.footer-brand span, .footer-meta { color: rgba(255,255,255,.51); font-size: .7rem; line-height: 1.7; }
.footer-meta { text-align: right; }
.to-top { display: inline-flex; align-items: center; gap: 7px; color: rgba(255,255,255,.75); font-size: .72rem; font-weight: 800; }
.to-top svg { width: 15px; height: 15px; transform: rotate(-90deg); }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.25,1); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
[data-locale="en"] .section-title { max-width: 690px; letter-spacing: -.07em; }
[data-locale="en"] .hero-title { max-width: 690px; font-size: clamp(2.85rem, 5.1vw, 5.2rem); letter-spacing: -.075em; }
[data-locale="en"] .hero-copy { width: min(660px, 100%); }
[data-locale="en"] .advantage h3, [data-locale="en"] .service h3, [data-locale="en"] .story h3 { letter-spacing: -.055em; }

@media (max-width: 980px) {
  .container { width: min(100% - 48px, 1180px); }
  .site-nav { gap: 13px; font-size: .68rem; }
  .hero-deck { right: 24px; }
  .section-head, .insights-grid { gap: 35px; }
  .advantage { grid-template-columns: 68px minmax(200px, .95fr) minmax(0, 1.35fr); gap: 20px; }
  .service { grid-template-columns: 80px minmax(230px, 1fr) minmax(0, 1.15fr) 40px; gap: 18px; }
  .about-layout { gap: 58px; }
  .contact-top { gap: 55px; }
}

@media (max-width: 760px) {
  .container { width: min(100% - 40px, 1180px); }
  .topbar__inner { min-height: 66px; }
  .brand img { width: 38px; height: 38px; }
  .brand__zh { font-size: 1rem; }
  .site-nav { position: absolute; top: 66px; right: 0; left: 0; display: grid; gap: 0; padding: 10px 20px 17px; color: var(--ink); visibility: hidden; background: white; box-shadow: 0 20px 30px rgba(3,25,57,.14); opacity: 0; transform: translateY(-10px); transition: opacity .2s ease, transform .2s ease, visibility .2s; }
  .site-nav.is-open { visibility: visible; opacity: 1; transform: translateY(0); }
  .site-nav a { padding: 13px 0; border-bottom: 1px solid var(--line); }
  .site-nav a::after { display: none; }
  .language-switch { margin-left: auto; }
  .nav-toggle { display: grid; place-items: center; }
  .hero .container { align-items: flex-end; padding-top: 100px; padding-bottom: 105px; }
  .hero-media { background-position: 73% center; background-size: auto 100%; }
  .hero-copy { padding-left: 17px; }
  .hero-title { font-size: clamp(3rem, 16.2vw, 4.4rem); }
  [data-locale="en"] .hero-title { font-size: clamp(2.85rem, 13.2vw, 4rem); }
  .hero-subtitle { font-size: .93rem; }
  .hero-deck { right: auto; bottom: 35px; left: 20px; }
  .hero-deck__line { width: 48px; }
  .section-head { display: block; margin-bottom: 45px; }
  .section-head .section-intro { margin-top: 25px; }
  .intro-band, .about, .insights { padding: 82px 0; }
  .services { padding: 84px 0; }
  .advantage { grid-template-columns: 45px minmax(0, 1fr); gap: 12px 18px; padding: 27px 0; }
  .advantage p { grid-column: 2; font-size: .9rem; }
  .advantage:hover { padding-right: 8px; padding-left: 8px; }
  .service { grid-template-columns: 58px minmax(0, 1fr) 34px; gap: 16px; padding: 26px 0; }
  .service p { grid-column: 2 / span 2; font-size: .85rem; }
  .service__arrow { grid-column: 3; grid-row: 1; }
  .about-layout { display: block; }
  .about-mark { position: static; margin-bottom: 55px; }
  .about-mark__logo { width: 120px; }
  .story { padding-bottom: 35px; }
  .story + .story { padding-top: 34px; }
  .story p { font-size: .94rem; }
  .library { padding-top: 80px; }
  .search-stage { display: block; margin-right: -20px; margin-left: -20px; }
  .search-main { padding: 45px 30px; }
  .search-side { min-height: 210px; padding: 33px 30px; }
  .library-footer { display: block; padding: 25px 0; }
  .library-footer .button { margin-top: 20px; }
  .dialogue { min-height: 630px; padding: 85px 0; }
  .dialogue-grid { display: block; }
  .dialogue-side { margin-top: 52px; }
  .dialogue-copy { font-size: .93rem; }
  .insights-grid { display: block; }
  .insights-aside { margin-top: 53px; }
  .insight-item { grid-template-columns: 64px minmax(0, 1fr) 22px; gap: 16px; }
  .contact { padding: 82px 0 35px; }
  .contact-top { display: block; padding-bottom: 65px; }
  .contact-copy { font-size: .93rem; }
  .contact-qr-grid { max-width: 420px; margin-top: 48px; }
  .footer { display: block; }
  .footer-meta { margin: 23px 0 0; text-align: left; }
}

@media (max-width: 400px) {
  .container { width: min(100% - 32px, 1180px); }
  .brand__en { display: none; }
  .language-switch { font-size: .68rem; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .hero-actions .button { width: 100%; }
  .contact-qr-grid { gap: 13px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}