:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-2: #eef3f8;
  --ink: #0a1728;
  --muted: #5d6978;
  --line: #dbe3ec;
  --line-dark: rgba(255,255,255,.15);
  --blue: #1769ff;
  --cyan: #39c7c2;
  --green: #37b983;
  --violet: #8c76ff;
  --orange: #f3a13c;
  --navy: #081625;
  --navy-2: #0c2236;
  --navy-3: #12344a;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 18px 60px rgba(17, 35, 58, .08);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.container { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: fixed; left: 14px; top: -80px; z-index: 999; padding: 10px 14px; border-radius: 8px; background: #fff; color: #111; box-shadow: var(--shadow); }
.skip-link:focus { top: 14px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 70;
  background: rgba(247,249,252,.91);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(219,227,236,.78);
}
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand-mark { width: 39px; height: 39px; display: grid; place-items: center; border-radius: 11px; background: var(--navy); color: #fff; font-weight: 800; font-size: 13px; letter-spacing: .05em; box-shadow: 0 8px 20px rgba(8,22,37,.14); }
.brand-copy { display: grid; line-height: 1.12; }
.brand-copy strong { font-size: 15px; }
.brand-copy small { margin-top: 5px; color: var(--muted); font-size: 11px; }
.nav { display: flex; align-items: center; gap: 25px; font-size: 14px; color: #334155; }
.nav a { position: relative; transition: color .18s ease; }
.nav a:not(.nav-cta)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -9px; height: 2px; background: var(--blue); transition: right .18s ease; }
.nav a:hover, .nav a.active { color: var(--blue); }
.nav a:hover::after, .nav a.active::after { right: 0; }
.nav-cta { padding: 9px 15px; border-radius: 10px; background: var(--navy); color: #fff !important; }
.menu-toggle { display: none; width: 42px; height: 42px; padding: 8px; border: 0; background: transparent; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; border-radius: 2px; background: var(--ink); transition: transform .2s ease, opacity .2s ease; }

.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: linear-gradient(128deg, #071523 0%, #0a1e31 52%, #0c3341 100%);
}
.hero-grid { position: absolute; inset: 0; opacity: .12; background-image: linear-gradient(rgba(255,255,255,.1) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.1) 1px, transparent 1px); background-size: 42px 42px; mask-image: linear-gradient(to right, transparent 0%, #000 40%, #000 100%); }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(12px); pointer-events: none; }
.hero-glow-a { width: 560px; height: 560px; right: -60px; top: -250px; background: rgba(44, 199, 191, .16); }
.hero-glow-b { width: 430px; height: 430px; right: 30%; bottom: -310px; background: rgba(23, 105, 255, .14); }
.hero-inner { position: relative; z-index: 2; min-height: 640px; display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 74px; padding: 78px 0 88px; }
.hero-meta { margin: 0 0 23px; color: #9fb5cc; font-size: 13px; letter-spacing: .12em; }
.hero h1 { margin: 0; max-width: 760px; font-size: clamp(44px, 5vw, 72px); line-height: 1.07; letter-spacing: -.045em; }
.hero h1 span { color: #d9e8f5; }
.hero-lead { max-width: 720px; margin: 28px 0 0; color: #c4d1df; font-size: 18px; line-height: 1.85; }
.hero-actions { display: flex; gap: 12px; margin-top: 34px; }
.button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; padding: 0 20px; border: 0; border-radius: 11px; font-size: 14px; font-weight: 750; cursor: pointer; transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
.button:hover { transform: translateY(-2px); }
.primary { background: var(--blue); color: #fff; box-shadow: 0 12px 28px rgba(23,105,255,.28); }
.secondary { color: #fff; background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.28); }
.hero-facts { margin: 38px 0 0; display: grid; grid-template-columns: repeat(4,1fr); gap: 0; max-width: 770px; }
.hero-facts > div { padding-right: 20px; margin-right: 20px; border-right: 1px solid rgba(255,255,255,.15); }
.hero-facts > div:last-child { border-right: 0; margin-right: 0; padding-right: 0; }
.hero-facts dt { color: #8298af; font-size: 11px; margin-bottom: 7px; }
.hero-facts dd { margin: 0; color: #e2ecf5; font-size: 13px; font-weight: 650; }

.research-orbit { position: relative; justify-self: end; width: min(460px, 100%); aspect-ratio: 1; }
.orbit-ring { position: absolute; border-radius: 50%; border: 1px solid rgba(130,220,219,.2); }
.ring-outer { inset: 4%; }
.ring-middle { inset: 19%; border-style: dashed; }
.ring-inner { inset: 32%; }
.orbit-core { position: absolute; inset: 31%; display: grid; place-content: center; text-align: center; border-radius: 50%; background: rgba(255,255,255,.07); border: 1px solid rgba(104,222,215,.3); box-shadow: inset 0 0 55px rgba(255,255,255,.025), 0 24px 70px rgba(0,0,0,.18); backdrop-filter: blur(12px); }
.orbit-core span { color: #5fd7cb; font-size: 10px; letter-spacing: .14em; }
.orbit-core strong { margin: 8px 0; font-size: 25px; }
.orbit-core small { color: #aec0d0; font-size: 11px; line-height: 1.65; }
.orbit-node { position: absolute; padding: 8px 12px; border-radius: 999px; color: #e4f0f7; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16); font-size: 12px; backdrop-filter: blur(8px); }
.node-a { left: 0; top: 26%; }
.node-b { right: 2%; top: 17%; }
.node-c { right: 0; bottom: 22%; }
.node-d { left: 3%; bottom: 18%; }

.quick-profile { position: relative; z-index: 5; margin-top: -1px; background: #fff; border-bottom: 1px solid var(--line); }
.profile-strip { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; }
.profile-strip article { min-height: 116px; display: flex; align-items: center; gap: 15px; padding: 24px 22px; border-right: 1px solid var(--line); }
.profile-strip article:first-child { padding-left: 0; }
.profile-strip article:last-child { border-right: 0; }
.icon-wrap { width: 42px; height: 42px; flex: 0 0 42px; display: grid; place-items: center; border-radius: 13px; background: #edf4ff; color: var(--blue); }
.icon-wrap svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.profile-strip strong { display: block; margin-bottom: 5px; font-size: 14px; }
.profile-strip p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.55; }

.section { padding: 104px 0; }
.section-soft { background: var(--surface-2); border-top: 1px solid #e5ebf2; border-bottom: 1px solid #e5ebf2; }
.section-dark { background: var(--navy); color: #fff; }
.section-index { margin: 0 0 17px; color: var(--blue); font-size: 11px; font-weight: 800; letter-spacing: .17em; }
h2 { margin: 0; font-size: clamp(32px, 4vw, 48px); line-height: 1.12; letter-spacing: -.035em; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 60px; margin-bottom: 45px; }
.section-heading > p { max-width: 500px; margin: 0; color: var(--muted); }
.section-heading.inverse > p { color: #96a9bb; }
.section-heading.inverse .section-index { color: #66d5c8; }

.about-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: 72px; align-items: start; }
.section-lead > p:not(.section-index) { color: #3f4d5e; font-size: 17px; line-height: 1.9; }
.section-lead > p:last-child { margin-bottom: 0; }
.about-cards { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; }
.info-card { min-height: 210px; padding: 27px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: #fff; box-shadow: 0 8px 32px rgba(20, 40, 64, .035); }
.card-icon { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 50%; }
.card-icon svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.card-icon.blue { background: #e8f1ff; color: var(--blue); }
.card-icon.green { background: #e7f7ef; color: var(--green); }
.card-icon.violet { background: #efeaff; color: var(--violet); }
.card-icon.orange { background: #fff0df; color: var(--orange); }
.info-card h3 { margin: 18px 0 9px; font-size: 19px; }
.info-card p { margin: 0; color: var(--muted); font-size: 14px; }

.research-panels { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.research-panel { position: relative; overflow: hidden; min-height: 330px; padding: 30px; display: flex; flex-direction: column; justify-content: space-between; border-radius: var(--radius); color: #fff; box-shadow: var(--shadow); }
.research-panel::before, .research-panel::after { content: ""; position: absolute; border-radius: 50%; pointer-events: none; }
.research-panel::before { width: 260px; height: 260px; right: -110px; top: -100px; border: 1px solid rgba(255,255,255,.18); }
.research-panel::after { width: 160px; height: 160px; right: -60px; bottom: -70px; background: rgba(255,255,255,.05); }
.panel-a { background: linear-gradient(145deg, #102b4a, #163a57); }
.panel-b { background: linear-gradient(145deg, #19493f, #205b50); }
.panel-c { background: linear-gradient(145deg, #352c58, #433967); }
.research-panel > span { color: rgba(255,255,255,.66); font-size: 11px; font-weight: 800; letter-spacing: .14em; }
.research-panel h3 { margin: 0 0 14px; font-size: 26px; line-height: 1.25; letter-spacing: -.02em; }
.research-panel p { margin: 0; color: rgba(255,255,255,.78); font-size: 14px; line-height: 1.75; }
.research-panel small { color: rgba(255,255,255,.56); font-size: 11px; letter-spacing: .08em; }

.agenda-list { border-top: 1px solid var(--line); }
.agenda-item { display: grid; grid-template-columns: 72px 1fr auto; gap: 26px; align-items: center; min-height: 136px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.agenda-status { width: 52px; padding: 6px 0; text-align: center; border-radius: 999px; background: #e9f2ff; color: var(--blue); font-size: 11px; font-weight: 800; }
.agenda-item h3 { margin: 0 0 8px; font-size: 22px; }
.agenda-item p { margin: 0; color: var(--muted); }
.agenda-item > span { color: #7c8998; font-size: 12px; letter-spacing: .08em; }

.practice-flow { display: grid; grid-template-columns: repeat(4,1fr); border-top: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); }
.practice-flow article { min-height: 260px; padding: 33px 28px; border-right: 1px solid var(--line-dark); }
.practice-flow article:first-child { padding-left: 0; }
.practice-flow article:last-child { border-right: 0; }
.practice-flow span { color: #65d3c7; font-size: 11px; font-weight: 800; letter-spacing: .14em; }
.practice-flow h3 { margin: 48px 0 12px; font-size: 21px; }
.practice-flow p { margin: 0; color: #9fb1c3; font-size: 14px; }

.outputs-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 78px; align-items: start; }
.section-lead.compact > p:not(.section-index) { margin-top: 23px; font-size: 16px; }
.output-lines { border-top: 1px solid var(--line); }
.output-lines article { display: grid; grid-template-columns: 170px 1fr; gap: 34px; padding: 23px 0; border-bottom: 1px solid var(--line); }
.output-lines span { font-weight: 800; }
.output-lines p { margin: 0; color: var(--muted); }

.resource-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.resource-grid article { min-height: 190px; display: flex; flex-direction: column; padding: 28px; border: 1px solid #d8e0e9; border-radius: 15px; background: rgba(255,255,255,.72); }
.resource-grid strong { font-size: 19px; }
.resource-grid p { margin: 14px 0 auto; color: var(--muted); }
.resource-grid span { align-self: flex-start; margin-top: 26px; padding: 6px 9px; border-radius: 999px; background: #e9eef5; color: #687686; font-size: 10px; font-weight: 800; letter-spacing: .08em; }

.contact { position: relative; overflow: hidden; background: linear-gradient(120deg, #1769ff, #1557cc); color: #fff; }
.contact::after { content: ""; position: absolute; width: 420px; height: 420px; right: -120px; bottom: -280px; border-radius: 50%; border: 1px solid rgba(255,255,255,.2); box-shadow: 0 0 0 60px rgba(255,255,255,.03), 0 0 0 120px rgba(255,255,255,.025); }
.contact .section-index { color: rgba(255,255,255,.7); }
.contact-inner { position: relative; z-index: 2; display: flex; align-items: end; justify-content: space-between; gap: 50px; }
.contact h2 { max-width: 700px; }
.contact p:not(.section-index) { max-width: 760px; color: rgba(255,255,255,.83); }
.contact-actions { display: flex; gap: 10px; flex: 0 0 auto; }
.button.light { background: #fff; color: var(--blue); }
.button.ghost { color: #fff; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.28); }
.copy-toast { position: fixed; left: 50%; bottom: 28px; z-index: 90; transform: translate(-50%, 14px); padding: 10px 14px; border-radius: 9px; background: #081625; color: #fff; box-shadow: var(--shadow); font-size: 13px; opacity: 0; pointer-events: none; transition: opacity .2s ease, transform .2s ease; }
.copy-toast.show { opacity: 1; transform: translate(-50%, 0); }

.site-footer { padding: 24px 0; background: #06111e; color: #8ea1b3; font-size: 12px; }
.footer-inner { display: flex; justify-content: space-between; gap: 20px; }

@media (max-width: 980px) {
  .container { width: min(var(--max), calc(100% - 30px)); }
  .menu-toggle { display: block; }
  .nav { position: absolute; top: 64px; left: 15px; right: 15px; display: none; flex-direction: column; align-items: stretch; gap: 4px; padding: 15px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.99); box-shadow: var(--shadow); }
  .nav.open { display: flex; }
  .nav a { padding: 10px 12px; border-radius: 8px; }
  .nav a::after { display: none; }
  .nav-cta { text-align: center; margin-top: 4px; }
  .hero-inner { min-height: auto; grid-template-columns: 1fr; gap: 54px; padding: 78px 0 74px; }
  .research-orbit { justify-self: center; width: min(430px, 100%); }
  .hero-facts { grid-template-columns: 1fr 1fr; row-gap: 20px; }
  .hero-facts > div:nth-child(2) { border-right: 0; }
  .profile-strip { grid-template-columns: 1fr 1fr; }
  .profile-strip article:nth-child(2) { border-right: 0; }
  .profile-strip article:first-child { padding-left: 22px; }
  .about-grid, .outputs-layout { grid-template-columns: 1fr; gap: 38px; }
  .research-panels { grid-template-columns: 1fr; }
  .research-panel { min-height: 255px; }
  .practice-flow { grid-template-columns: 1fr 1fr; }
  .practice-flow article { min-height: 220px; border-bottom: 1px solid var(--line-dark); }
  .practice-flow article:nth-child(2) { border-right: 0; }
  .practice-flow article:nth-child(3) { padding-left: 0; }
  .resource-grid { grid-template-columns: 1fr; }
  .contact-inner { align-items: start; flex-direction: column; }
}

@media (max-width: 640px) {
  .header-inner { min-height: 64px; }
  .brand-copy small { display: none; }
  .hero-inner { padding-top: 62px; }
  .hero h1 { font-size: 42px; }
  .hero-lead { font-size: 16px; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .hero-facts { grid-template-columns: 1fr; }
  .hero-facts > div { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.12); padding: 0 0 12px; margin: 0 0 12px; }
  .hero-facts > div:last-child { border-bottom: 0; }
  .research-orbit { max-width: 330px; }
  .orbit-core strong { font-size: 20px; }
  .orbit-node { font-size: 10px; padding: 6px 9px; }
  .profile-strip { grid-template-columns: 1fr; }
  .profile-strip article { border-right: 0; border-bottom: 1px solid var(--line); padding-left: 0; }
  .profile-strip article:first-child { padding-left: 0; }
  .profile-strip article:last-child { border-bottom: 0; }
  .section { padding: 72px 0; }
  .section-heading { flex-direction: column; align-items: start; gap: 18px; }
  .about-cards { grid-template-columns: 1fr; }
  .agenda-item { grid-template-columns: 1fr; gap: 12px; align-items: start; }
  .agenda-item > span { justify-self: start; }
  .practice-flow { grid-template-columns: 1fr; }
  .practice-flow article, .practice-flow article:nth-child(3) { min-height: auto; padding: 26px 0; border-right: 0; }
  .practice-flow h3 { margin-top: 26px; }
  .output-lines article { grid-template-columns: 1fr; gap: 8px; }
  .contact-actions { width: 100%; flex-direction: column; }
  .footer-inner { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}