:root {
  --ink: #f3f4f7;          /* primary text */
  --ink-soft: #aab0bd;     /* secondary text */
  --ink-faint: #6b7180;    /* tertiary / labels */
  --bg: #08090c;           /* page background */
  --bg-soft: #101218;      /* raised panel */
  --bg-softer: #15171f;
  --line: #20232c;         /* hairline */
  --line-soft: #181a21;
  --violet: #8C63F7;
  --green: #0BE087;
  --grad: linear-gradient(100deg, #8C63F7 0%, #0BE087 100%);
  --radius: 16px;
  --maxw: 1240px;
  --font: "Source Han Sans CN", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --serif: "Times New Roman", Georgia, "Songti SC", serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
::selection { background: rgba(139,108,255,.3); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 40px; }

/* ---------- nav (Dynamic Island, liquid glass) ---------- */
.nav {
  position: fixed; top: 16px; left: 0; right: 0; z-index: 100;
  display: flex; justify-content: center; padding: 0 20px;
  pointer-events: none;
}
.nav-inner {
  pointer-events: auto;
  display: flex; align-items: center; gap: 28px;
  height: 56px; padding: 0 10px 0 22px; max-width: 100%;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(40,42,54,.5), rgba(14,15,21,.42));
  backdrop-filter: blur(26px) saturate(200%) brightness(1.08);
  -webkit-backdrop-filter: blur(26px) saturate(200%) brightness(1.08);
  border: 1px solid rgba(255,255,255,.08);
  box-shadow:
    0 16px 48px rgba(0,0,0,.5),                 /* deep float */
    0 4px 12px rgba(0,0,0,.3),
    inset 0 1.5px 0 rgba(255,255,255,.4),       /* crisp top specular */
    inset 0 -8px 18px rgba(0,0,0,.32),          /* glass thickness / bottom shade */
    inset 0 0 0 1px rgba(255,255,255,.04);      /* faint rim light */
  position: relative; overflow: hidden;
  transition: transform .5s cubic-bezier(.22,1,.36,1), box-shadow .4s ease, background .4s ease;
}
/* top sheen — light pooling on the upper curve */
.nav-inner::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 60%;
  background: linear-gradient(to bottom, rgba(255,255,255,.14), rgba(255,255,255,0));
  border-radius: 999px 999px 40% 40% / 999px 999px 100% 100%;
  pointer-events: none;
}
/* slow specular sweep — light glinting across the glass */
.nav-inner::after {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; pointer-events: none;
  background: linear-gradient(115deg, transparent 32%, rgba(255,255,255,.12) 47%, rgba(255,255,255,.04) 53%, transparent 70%);
  background-size: 260% 100%;
  animation: glass-sweep 7s ease-in-out infinite;
}
@keyframes glass-sweep { 0% { background-position: 150% 0; } 60%, 100% { background-position: -60% 0; } }
.nav.scrolled .nav-inner {
  transform: scale(.97);
  background: linear-gradient(180deg, rgba(34,36,46,.6), rgba(12,13,18,.55));
  box-shadow:
    0 10px 34px rgba(0,0,0,.55),
    inset 0 1.5px 0 rgba(255,255,255,.42),
    inset 0 -8px 18px rgba(0,0,0,.34),
    inset 0 0 0 1px rgba(255,255,255,.05);
}
.brand { display: flex; align-items: center; gap: 11px; position: relative; z-index: 1; }
.brand .logo-img { height: 14px; width: auto; display: block; }
.brand .cn { font-size: 11.5px; color: var(--ink-soft); letter-spacing: .3em; padding-left: 11px; border-left: 1px solid rgba(255,255,255,.14); line-height: 1.4; }
.nav-links { display: flex; gap: 4px; align-items: center; position: relative; z-index: 1; isolation: isolate; }
.nav-links a {
  font-size: 13.5px; color: var(--ink-soft); padding: 8px 15px; border-radius: 999px;
  position: relative; z-index: 1; transition: color .35s ease;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover { transform: translateY(-1px) scale(1.018); }
.nav-links a:active { transform: translateY(0) scale(.982); }
.nav-links a { transition: color .32s ease, transform .46s cubic-bezier(.2,1,.22,1); }
.nav-links a.active { color: var(--ink); }
/* iOS-26 jelly-glass indicator that slides between items */
.nav-ind {
  --nav-stretch: 1;
  --nav-sheen-x: 48%;
  position: absolute; top: 0; left: 0; width: 0; height: 34px; z-index: 0;
  border-radius: 999px; opacity: 0; pointer-events: none;
  transform: translate3d(0,0,0) scaleX(var(--nav-stretch));
  transform-origin: 50% 50%;
  background:
    radial-gradient(circle at var(--nav-sheen-x) 18%, rgba(255,255,255,.42), rgba(255,255,255,.09) 30%, transparent 58%),
    linear-gradient(180deg, rgba(255,255,255,.22), rgba(255,255,255,.06) 48%, rgba(255,255,255,.105));
  border: 1px solid rgba(255,255,255,.2);
  box-shadow:
    inset 0 1.5px 0 rgba(255,255,255,.62),
    inset 0 -6px 14px rgba(0,0,0,.24),
    inset 10px 0 18px rgba(255,255,255,.055),
    inset -12px 0 20px rgba(142,120,255,.08),
    0 6px 22px rgba(0,0,0,.28),
    0 0 22px rgba(150,132,255,.16);
  backdrop-filter: blur(14px) saturate(210%) brightness(1.16);
  -webkit-backdrop-filter: blur(14px) saturate(210%) brightness(1.16);
  filter: saturate(1.08);
  will-change: transform, width, height, opacity;
  transition: opacity .28s ease, filter .32s ease;
}
.nav-ind::before {
  content: ""; position: absolute; left: 8%; right: 8%; top: 1px; height: 44%; border-radius: 999px;
  background: linear-gradient(to bottom, rgba(255,255,255,.56), rgba(255,255,255,.08) 56%, rgba(255,255,255,0));
  pointer-events: none;
}
.nav-ind::after {
  content: ""; position: absolute; inset: 1px; border-radius: inherit; pointer-events: none;
  background:
    linear-gradient(90deg, rgba(255,255,255,.18), transparent 18%, transparent 78%, rgba(255,255,255,.12)),
    radial-gradient(circle at var(--nav-sheen-x) 92%, rgba(139,108,255,.16), transparent 52%);
  mix-blend-mode: screen;
  opacity: .74;
}
.nav-links.is-gliding .nav-ind {
  filter: saturate(1.18) brightness(1.08);
}
.nav-links a.nav-cta {
  background: transparent;
  border: 0;
  box-shadow: none;
  margin-left: 0;
  text-shadow: none;
}
.nav-toggle {
  display: none; background: none; border: none; font-size: 22px; cursor: pointer; color: var(--ink);
  position: relative; z-index: 1; padding: 4px 6px;
}

/* ---------- splash (opening animation, plays on every page load then slides away) ---------- */
#splash {
  position: fixed; inset: 0; z-index: 9999; background: var(--bg);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  overflow: hidden;
  transition: transform 1s cubic-bezier(.76,0,.24,1);
}
#splash::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(1100px 520px at 50% 42%, rgba(139,108,255,.12), transparent 70%),
              radial-gradient(900px 480px at 80% 80%, rgba(52,211,153,.08), transparent 70%);
}
.fv-logo {
  width: min(72vw, 980px);
  max-height: 54vh;
  object-fit: contain;
  position: relative;
  animation: fv-in 1.1s cubic-bezier(.22,1,.36,1) .1s both;
}
body.fluid-on .fv-logo { opacity: 0 !important; }
#fv-canvas { position: absolute; pointer-events: none; }
body.splash-exit #splash { transform: translateY(-100%); }
body:not(.has-splash) #splash { display: none; }
@keyframes fv-in { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }

/* ---------- cursor stalker ---------- */
#stalker {
  position: fixed; z-index: 999; top: 0; left: 0; pointer-events: none;
  font-size: 26px; line-height: 1; font-weight: 700;
  opacity: 0; transform: translate(-50%,-50%) scale(.3) rotate(-14deg);
  transition: opacity .25s ease, transform .3s cubic-bezier(.34,1.56,.64,1);
  filter: drop-shadow(0 4px 12px rgba(139,108,255,.4));
}
#stalker span {
  display: block;
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: note-bob 1.6s ease-in-out infinite;
}
#stalker.on { opacity: 1; transform: translate(-50%,-50%) scale(1) rotate(0deg); }
#stalker.on.grow { transform: translate(-50%,-50%) scale(2.2) rotate(0deg); }
@keyframes note-bob {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-6px) rotate(6deg); }
}
@media (pointer: coarse) { #stalker { display: none; } }

/* ---------- shared editorial bits ---------- */
.kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; letter-spacing: .25em; color: var(--ink-faint); font-weight: 600;
  margin-bottom: 26px; text-transform: uppercase;
}
.kicker::before { content: ""; width: 30px; height: 1px; background: var(--grad); }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

/* index number, big & ghostly — editorial accent */
.idx {
  font-family: var(--serif); font-style: italic; font-weight: 400;
  color: var(--ink-faint); opacity: .5;
}

/* ---------- hero (headline + particle wave) ---------- */
.hero { min-height: 100svh; display: flex; align-items: center; padding: 120px 0 64px; position: relative; overflow: hidden; isolation: isolate; }
.hero::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 260px;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(8,9,12,0) 0%, rgba(8,9,12,.52) 58%, var(--bg) 100%);
}
#wave-canvas {
  position: absolute; top: -16%; right: -24%; width: 108%; height: 132%;
  z-index: 0; pointer-events: none; opacity: .96;
  mask-image: linear-gradient(to right, transparent, rgba(0,0,0,.42) 12%, #000 30%);
  -webkit-mask-image: linear-gradient(to right, transparent, rgba(0,0,0,.42) 12%, #000 30%);
}
.hero .wrap { position: relative; z-index: 2; width: 100%; }
.hero-grid { }
.hero-copy { max-width: 740px; }
.hero .line { display: block; overflow: hidden; }
.hero .line-inner {
  display: block; transform: translateY(112%);
  transition: transform 1s cubic-bezier(.22,1,.36,1);
  transition-delay: var(--d, 0s);
}
.rise {
  opacity: 0; transform: translateY(28px);
  transition: opacity .9s ease, transform .9s cubic-bezier(.22,1,.36,1);
  transition-delay: var(--d, 0s);
}
body.hero-in .hero .line-inner { transform: translateY(0); }
body.hero-in .rise { opacity: 1; transform: none; }
.hero h1 {
  font-size: clamp(36px, 5vw, 70px); line-height: 1.2; font-weight: 800;
  letter-spacing: 0;
}
.hero .sub {
  margin-top: 32px;
  font-size: 18px;
  font-weight: 300;
  color: rgba(243,244,247,.62);
  max-width: 620px;
  line-height: 1.9;
}
.hero .sub p {
  margin: 0;
}
.hero .sub p + p {
  margin-top: 12px;
}
.hero .en-slogan { margin-top: 16px; font-size: 12.5px; letter-spacing: .28em; color: rgba(170,176,189,.76); text-transform: uppercase; }
.hero-proof {
  margin-top: 24px; display: flex; flex-wrap: wrap; gap: 10px; max-width: 720px;
}
.hero-proof span {
  display: inline-flex; align-items: center; min-height: 36px;
  padding: 8px 14px; border-radius: 999px;
  font-size: 13px; line-height: 1.35; color: var(--ink);
  background: rgba(255,255,255,.052); border: 1px solid rgba(255,255,255,.13);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter: blur(10px) saturate(160%);
  -webkit-backdrop-filter: blur(10px) saturate(160%);
}
.hero-actions { margin-top: 48px; display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 15px 32px; border-radius: 16px;
  font-size: 14.5px; font-weight: 600; transition: transform .2s, opacity .2s, background .2s, color .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-grad { background: var(--grad); color: #08090c; }
.btn-grad:hover { opacity: .92; }
.btn-ghost { border: 1px solid var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink-soft); background: var(--bg-soft); }

/* ---------- marquee ---------- */
.marquee {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 22px 0; overflow: hidden; background: var(--bg);
}
.marquee-track { display: flex; align-items: center; gap: 40px; width: max-content; animation: marquee 40s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee span { font-size: clamp(15px,1.6vw,18px); color: var(--ink-soft); white-space: nowrap; letter-spacing: .01em; font-weight: 500; }
.marquee i { font-style: normal; font-size: 14px; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- page head (inner pages) ---------- */
.page-head { padding: 180px 0 80px; position: relative; }
.page-head .kicker { color: var(--violet); }
.page-head h1 { font-size: clamp(34px, 4.6vw, 62px); font-weight: 800; line-height: 1.2; letter-spacing: 0; }
.page-head p { margin-top: 24px; font-size: 18px; line-height: 1.85; color: var(--ink-soft); max-width: 660px; }

/* ---------- sections ---------- */
section { padding: 110px 0; position: relative; }
.sec-head { margin-bottom: 64px; max-width: 760px; }
.sec-head h2 { font-size: clamp(26px, 3vw, 40px); font-weight: 700; line-height: 1.28; letter-spacing: 0; }
.sec-head .lede { margin-top: 16px; color: var(--ink-soft); font-size: 18px; line-height: 1.8; }

.divider { height: 1px; background: var(--line); border: none; }

/* ---------- approach rows (borderless, editorial) ---------- */
.rows { border-top: 1px solid var(--line); }
.row-item {
  display: grid; grid-template-columns: 80px 1fr 1.2fr; gap: 32px; align-items: start;
  padding: 40px 0; border-bottom: 1px solid var(--line); transition: padding-left .35s ease;
}
.row-item:hover { padding-left: 16px; }
.row-item .idx { font-size: 34px; }
.row-item h3 { font-size: clamp(22px,2.4vw,28px); font-weight: 700; line-height: 1.3; letter-spacing: 0; }
.row-item p { color: var(--ink-soft); font-size: 15.5px; }
.row-item .tag-row { margin-top: 16px; }

/* ---------- service cards (light frame) ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.svc {
  background: var(--bg); padding: 44px 40px; transition: background .3s ease;
  position: relative;
}
.svc:hover { background: var(--bg-soft); }
.svc .num { font-family: var(--serif); font-style: italic; font-size: 15px; color: var(--ink-faint); letter-spacing: .1em; margin-bottom: 22px; }
.svc h3 { font-size: clamp(20px,2vw,24px); font-weight: 700; margin-bottom: 14px; line-height: 1.4; letter-spacing: 0; }
.svc p { font-size: 15px; color: var(--ink-soft); }
.svc .tag-row { margin-top: 22px; }

/* minimal editorial columns — no boxes, just a thin top rule + whitespace */
.grid { display: grid; gap: 44px 40px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card {
  padding: 24px 0 0; border-top: 1px solid var(--line);
  transition: border-color .35s ease;
}
.card:hover { border-top-color: rgba(255,255,255,.3); }
.card-link { display: block; cursor: pointer; }
.card .num { font-family: var(--serif); font-style: italic; font-size: 14px; letter-spacing: .12em; color: var(--ink-faint); margin-bottom: 14px; }
.card h3 { font-size: 19px; font-weight: 700; margin-bottom: 12px; line-height: 1.4; letter-spacing: 0; }
.card p { font-size: 15px; line-height: 1.75; color: var(--ink-soft); }
.card .tag-row { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 9px; }

.tag-row { display: flex; flex-wrap: wrap; gap: 9px; }
.tag {
  font-size: 12px; color: var(--ink-soft); background: transparent;
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 13px; letter-spacing: .02em;
}

.business-landing {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 150px 0 92px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.018), transparent 38%),
    linear-gradient(90deg, rgba(139,108,255,.07), transparent 26%, transparent 72%, rgba(11,224,135,.04));
}
.business-landing .wrap { width: 100%; }
.business-landing-copy {
  display: grid;
  grid-template-columns: minmax(280px, .62fr) minmax(360px, 1fr);
  gap: 72px;
  align-items: end;
  margin-bottom: 48px;
}
.business-landing-copy .kicker { margin-bottom: 20px; color: var(--violet); }
.business-landing-copy h1 {
  font-size: clamp(44px, 6.2vw, 86px);
  line-height: 1;
  font-weight: 800;
  letter-spacing: 0;
}
.business-landing-copy p {
  max-width: 620px;
  color: rgba(243,244,247,.72);
  font-size: clamp(16px, 1.35vw, 20px);
  line-height: 1.85;
}
.business-case-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}
.business-case-grid .card {
  min-height: 282px;
  display: flex;
  flex-direction: column;
  padding: 30px;
  border-top: 0;
  background:
    linear-gradient(180deg, rgba(255,255,255,.036), rgba(255,255,255,.014)),
    var(--bg);
  transition: background .35s ease, transform .35s cubic-bezier(.22,1,.36,1);
}
.business-case-grid .card:hover {
  background:
    linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02)),
    var(--bg-soft);
  transform: translateY(-2px);
}
.business-case-grid .card h3 { font-size: clamp(18px, 1.6vw, 22px); }
.business-case-grid .card p { max-width: 430px; }
.business-case-grid .case-line {
  margin-top: auto;
  padding-top: 22px;
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: .18em;
  text-transform: uppercase;
}
.business-case-grid .tag-row { margin-top: 12px; }

@media (max-width: 1180px) {
  .business-case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- community case gateways ---------- */
.community-showcase {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 40px;
}
.community-card {
  display: flex; flex-direction: column; align-items: stretch; min-width: 0;
  appearance: none; border: 0; border-top: 1px solid var(--line);
  background: transparent; color: inherit; text-align: left; cursor: pointer;
  padding: 24px 0 0; font: inherit;
  transition: border-color .35s ease, transform .35s cubic-bezier(.22,1,.36,1);
}
.community-card:hover { border-top-color: rgba(255,255,255,.38); transform: translateY(-4px); }
.community-media {
  position: relative; display: block; overflow: hidden; aspect-ratio: 4 / 3;
  margin-bottom: 22px; border-radius: 10px;
  background: var(--bg-soft); border: 1px solid rgba(255,255,255,.08);
}
.community-media::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(180deg, rgba(8,9,12,.04), rgba(8,9,12,.62)),
    linear-gradient(90deg, rgba(8,9,12,.18), transparent 52%);
}
.community-media img {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(.82) brightness(.72);
  transform: scale(1.02);
  transition: transform .8s cubic-bezier(.22,1,.36,1), filter .45s ease;
}
.community-card:hover .community-media img { transform: scale(1.08); filter: saturate(1) brightness(.9); }
.community-card .num {
  font-family: var(--serif); font-style: italic; font-size: 14px;
  letter-spacing: .12em; color: var(--ink-faint); margin-bottom: 14px;
}
.community-title { display: block; font-size: 20px; font-weight: 700; line-height: 1.4; letter-spacing: 0; margin-bottom: 10px; }
.community-desc { display: block; color: var(--ink-soft); font-size: 15px; line-height: 1.75; }
.community-open {
  display: inline-flex; width: fit-content; margin-top: 18px;
  font-size: 12px; letter-spacing: .12em; text-transform: uppercase;
  color: rgba(243,244,247,.72);
}
.community-open::after {
  content: ""; width: 34px; height: 1px; margin: 12px 0 0 10px;
  background: var(--grad); transform-origin: left; transform: scaleX(.55);
  transition: transform .35s ease;
}
.community-card:hover .community-open::after { transform: scaleX(1); }

body.case-modal-open { overflow: hidden; }
.case-lightbox {
  position: fixed; inset: 0; z-index: 500;
  display: grid; place-items: center; padding: 28px;
  opacity: 0; pointer-events: none; visibility: hidden;
  transition: opacity .28s ease, visibility .28s ease;
}
.case-lightbox.open { opacity: 1; pointer-events: auto; visibility: visible; }
.case-backdrop {
  position: absolute; inset: 0; border: 0; cursor: pointer;
  background: rgba(4,5,8,.82);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
}
.case-panel {
  position: relative; z-index: 1; width: min(1180px, calc(100vw - 56px));
  max-height: calc(100svh - 56px); overflow: hidden;
  display: grid; grid-template-columns: minmax(260px, .62fr) minmax(0, 1.38fr);
  grid-template-areas: "copy viewer" "thumbs thumbs";
  gap: 26px; padding: 28px; border-radius: 18px;
  background: linear-gradient(180deg, rgba(20,22,30,.96), rgba(8,9,12,.96));
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 34px 90px rgba(0,0,0,.62), inset 0 1px 0 rgba(255,255,255,.06);
  transform: translateY(16px) scale(.98);
  transition: transform .32s cubic-bezier(.22,1,.36,1);
}
.case-lightbox.open .case-panel { transform: none; }
.case-close {
  position: absolute; top: 14px; right: 14px; z-index: 3;
  width: 38px; height: 38px; border-radius: 50%; border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.08); color: var(--ink); cursor: pointer;
  font-size: 24px; line-height: 1; display: grid; place-items: center;
}
.case-copy {
  grid-area: copy; align-self: center; padding-right: 10px;
  max-height: min(62svh, 610px); overflow-y: auto;
  scrollbar-width: none;
}
.case-copy::-webkit-scrollbar { display: none; }
.case-kicker {
  font-size: 12px; letter-spacing: .22em; color: var(--ink-faint);
  font-weight: 600; text-transform: uppercase; margin-bottom: 18px;
}
.case-copy h3 { font-size: clamp(28px, 3vw, 44px); line-height: 1.18; font-weight: 800; letter-spacing: 0; }
.case-copy p {
  margin-top: 18px; color: var(--ink-soft); line-height: 1.86;
  font-size: 15.5px; max-width: 34em;
}
.case-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 24px; }
.case-tags span {
  font-size: 12px; color: var(--ink-soft); border: 1px solid rgba(255,255,255,.13);
  border-radius: 999px; padding: 4px 12px; background: rgba(255,255,255,.03);
}
.case-viewer {
  grid-area: viewer; position: relative; min-width: 0;
  display: grid; align-items: center;
}
.case-viewer figure {
  margin: 0; overflow: hidden; border-radius: 14px; background: #050609;
  border: 1px solid rgba(255,255,255,.1); position: relative;
}
.case-viewer img {
  width: 100%; height: min(62svh, 610px); object-fit: contain; display: block;
  background: #050609;
}
.case-viewer figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 34px 22px 18px;
  color: rgba(243,244,247,.78); font-size: 13px; letter-spacing: .04em;
  background: linear-gradient(180deg, transparent, rgba(0,0,0,.72));
}
.case-nav {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 2;
  width: 42px; height: 42px; border-radius: 50%; border: 1px solid rgba(255,255,255,.14);
  background: rgba(8,9,12,.58); color: var(--ink); cursor: pointer;
  display: grid; place-items: center; backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.case-nav svg { width: 18px; height: 18px; stroke: currentColor; stroke-width: 2; fill: none; }
.case-prev { left: 14px; }
.case-next { right: 14px; }
.case-thumbs {
  grid-area: thumbs; display: flex; gap: 10px; overflow-x: auto; scrollbar-width: none;
  padding: 2px 2px 4px;
}
.case-thumbs::-webkit-scrollbar { display: none; }
.case-thumb {
  flex: 0 0 92px; height: 62px; border-radius: 8px; overflow: hidden; padding: 0;
  border: 1px solid rgba(255,255,255,.11); background: var(--bg-soft); cursor: pointer;
  opacity: .52; transition: opacity .25s ease, border-color .25s ease, transform .25s ease;
}
.case-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; filter: saturate(.85) brightness(.8); }
.case-thumb.active { opacity: 1; border-color: rgba(243,244,247,.54); transform: translateY(-2px); }

/* ---------- works gallery (editorial, image-led) ---------- */
.gallery { display: flex; flex-direction: column; }
.work {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
  padding: 70px 0; border-top: 1px solid var(--line);
}
.work:last-child { border-bottom: 1px solid var(--line); }
.work:nth-child(even) .work-media { order: 2; }
.work-media {
  position: relative; overflow: hidden; border-radius: var(--radius);
  aspect-ratio: 16 / 10;
}
.work-media img {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(.85) brightness(.82); transition: transform .9s cubic-bezier(.22,1,.36,1), filter .6s ease;
}
.work:hover .work-media img { transform: scale(1.05); filter: saturate(1.05) brightness(.95); }
.work-media::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, transparent 50%, rgba(8,9,12,.45));
}
.work-no { font-family: var(--serif); font-style: italic; font-size: 18px; color: var(--ink-faint); margin-bottom: 18px; }
.work-body h3 { font-size: clamp(24px,2.6vw,38px); font-weight: 800; line-height: 1.22; letter-spacing: 0; }
.work-body .desc { margin-top: 18px; color: var(--ink-soft); font-size: 16px; max-width: 460px; }
.work-body .partner { margin-top: 20px; font-size: 13.5px; color: var(--ink-faint); letter-spacing: .03em; }
.work-body .tag-row { margin-top: 22px; }

/* ---------- work teasers (index, horizontal scroll, landscape) ---------- */
.teaser-rail {
  display: flex; gap: 22px; overflow-x: auto; overflow-y: hidden;
  scroll-snap-type: x mandatory; padding: 4px 0 24px;
  padding-left: max(40px, calc(50vw - var(--maxw)/2)); padding-right: max(40px, calc(50vw - var(--maxw)/2));
  scrollbar-width: none;
}
.teaser-rail::-webkit-scrollbar { display: none; }
.teaser {
  flex: 0 0 clamp(260px, 30vw, 380px); scroll-snap-align: start; display: block;
}
.teaser .media { position: relative; overflow: hidden; border-radius: var(--radius); aspect-ratio: 16 / 10; }
.teaser .media img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.85) brightness(.82); transition: transform .9s cubic-bezier(.22,1,.36,1), filter .6s ease; }
.teaser:hover .media img { transform: scale(1.05); filter: saturate(1.05) brightness(.95); }
.teaser .num { font-family: var(--serif); font-style: italic; font-size: 13px; color: var(--ink-faint); margin: 14px 0 7px; }
.teaser h3 { font-size: 18px; font-weight: 700; line-height: 1.35; letter-spacing: 0; }
.teaser .partner { font-size: 12.5px; color: var(--ink-soft); margin-top: 6px; }
.rail-hint { display: flex; align-items: center; gap: 10px; margin-top: 26px; font-size: 12px; letter-spacing: .2em; color: var(--ink-faint); text-transform: uppercase; }
.rail-hint .bar { width: 56px; height: 1px; background: var(--line); position: relative; overflow: hidden; }
.rail-hint .bar::after { content: ""; position: absolute; left: 0; top: 0; height: 100%; width: 40%; background: var(--grad); animation: railslide 2.4s ease-in-out infinite; }
@keyframes railslide { 0%{left:-40%} 100%{left:100%} }

/* ---------- neural-network background (连接者) ---------- */
.netsec {
  position: relative; overflow: hidden;
  margin-top: -142px; padding-top: 218px;
  background: linear-gradient(180deg, rgba(8,9,12,0) 0%, var(--bg) 28%);
}
.netsec::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 240px;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(8,9,12,0) 0%, rgba(8,9,12,.5) 50%, rgba(8,9,12,0) 100%);
}
#net-canvas {
  position: absolute; top: -170px; left: 0; width: 100%; height: calc(100% + 190px); z-index: 0; pointer-events: none; opacity: .82;
  -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 12%, #000 48%, transparent 70%);
  mask-image: linear-gradient(to bottom, transparent 0, #000 12%, #000 48%, transparent 70%);
}
.netsec .wrap { position: relative; z-index: 2; }
.netsec .panels { position: relative; z-index: 2; }
.netsec .business-pages { position: relative; z-index: 2; }
/* on the 生态网络 hero, let the network fill the empty right side */
.page-head.netsec { overflow: hidden; }
.page-head.netsec #net-canvas {
  -webkit-mask-image: linear-gradient(to right, transparent 0, #000 48%, #000 100%);
  mask-image: linear-gradient(to right, transparent 0, #000 48%, #000 100%);
}

/* ---------- business chapters: four full-screen PPT-like sections ---------- */
.business-pages {
  margin-top: clamp(72px, 10vh, 118px);
}
.business-page {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: clamp(92px, 11vh, 142px) 0;
  scroll-margin-top: 96px;
}
.business-page + .business-page {
  border-top: 1px solid rgba(255,255,255,.055);
}
.business-page-inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: minmax(320px, .72fr) minmax(0, 1.28fr);
  gap: clamp(42px, 6.4vw, 92px);
  align-items: center;
}
.business-page-inner-alt {
  grid-template-columns: minmax(0, 1.28fr) minmax(320px, .72fr);
}
@media (min-width: 961px) {
  .business-page-columns .business-page-inner-alt {
    grid-template-columns: minmax(0, 1.2fr) minmax(330px, .8fr);
    gap: clamp(42px, 5.4vw, 78px);
  }
  .business-page-columns .business-copy {
    max-width: 500px;
  }
}
.business-copy {
  max-width: 500px;
}
.business-count {
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  letter-spacing: .12em;
  margin-bottom: clamp(16px, 2.5vh, 26px);
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.business-copy h3 {
  font-size: clamp(40px, 5.4vw, 76px);
  font-weight: 850;
  line-height: 1.08;
  letter-spacing: 0;
}
.business-copy p {
  margin-top: clamp(20px, 3vh, 30px);
  font-size: clamp(16px, 1.35vw, 20px);
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 27em;
}
.business-tags {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.business-tags span,
.business-tags a {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px;
  color: rgba(243,244,247,.58);
  background: rgba(255,255,255,.025);
  font-size: 13px;
  line-height: 1.2;
  text-decoration: none;
}
.brand-column-tags {
  max-width: 600px;
  gap: 12px;
}
.brand-column-tags span,
.brand-column-tags a {
  min-height: 38px;
  padding: 8px 16px;
  color: rgba(243,244,247,.68);
}
.brand-column-tags a {
  cursor: pointer;
  transition: color .18s ease, border-color .18s ease, background .18s ease, transform .18s ease;
}
.brand-column-tags a:hover,
.brand-column-tags a:focus-visible {
  color: rgba(255,255,255,.9);
  border-color: rgba(255,255,255,.28);
  background: rgba(255,255,255,.06);
  transform: translateY(-1px);
  outline: none;
}
.business-link {
  margin-top: 36px;
  padding: 0 0 8px;
  border: 0;
  border-bottom: 1px solid rgba(255,255,255,.22);
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 15px;
  letter-spacing: .08em;
  cursor: pointer;
  transition: color .35s ease, border-color .35s ease, transform .35s ease;
}
.business-link::after {
  content: " ->";
  letter-spacing: 0;
}
.business-link:hover {
  color: var(--green);
  border-color: rgba(11,224,135,.6);
  transform: translateX(4px);
}
.business-mosaic {
  height: min(64vh, 620px);
  min-height: 470px;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-template-rows: repeat(8, minmax(0, 1fr));
  gap: 14px;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  padding: 0;
}
.business-mosaic .tile {
  position: relative;
  display: block;
  margin: 0;
  padding: 0;
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,.11);
  background: rgba(255,255,255,.04);
  box-shadow: 0 24px 80px rgba(0,0,0,.28), inset 0 1px 0 rgba(255,255,255,.08);
  color: inherit;
  font: inherit;
  text-align: left;
  text-decoration: none;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
}
.business-mosaic .tile::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(4,5,8,.02), rgba(4,5,8,.34) 72%, rgba(4,5,8,.72)),
    radial-gradient(80% 80% at 30% 0%, rgba(140,99,247,.16), transparent 66%);
  pointer-events: none;
}
.business-mosaic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.86) brightness(.78);
  transform: scale(1.01);
  transition: transform 1s cubic-bezier(.22,1,.36,1), filter .6s ease;
}
.business-mosaic:hover img {
  transform: scale(1.055);
  filter: saturate(1.02) brightness(.9);
}
.business-mosaic figcaption,
.business-mosaic .tile-caption {
  position: absolute;
  left: 18px;
  bottom: 14px;
  z-index: 1;
  max-width: calc(100% - 36px);
  color: rgba(255,255,255,.72);
  font-size: 12px;
  letter-spacing: .08em;
}
.business-mosaic .tile-main { grid-area: 1 / 1 / 7 / 8; }
.business-mosaic .tile-side { grid-area: 1 / 8 / 5 / 13; }
.business-mosaic .tile-wide { grid-area: 5 / 7 / 9 / 13; }
.business-mosaic .tile-small { grid-area: 7 / 1 / 9 / 7; }
.business-page-event .business-mosaic {
  height: min(68vh, 660px);
  min-height: 540px;
  grid-template-rows: repeat(12, minmax(0, 1fr));
  gap: 12px;
}
.business-page-event .business-mosaic .tile-main { grid-area: 1 / 1 / 8 / 7; }
.business-page-event .business-mosaic .tile-side { grid-area: 1 / 7 / 5 / 10; }
.business-page-event .business-mosaic .tile-mini-a { grid-area: 1 / 10 / 5 / 13; }
.business-page-event .business-mosaic .tile-wide { grid-area: 5 / 7 / 9 / 13; }
.business-page-event .business-mosaic .tile-small { grid-area: 8 / 1 / 13 / 5; }
.business-page-event .business-mosaic .tile-mini-b { grid-area: 8 / 5 / 13 / 8; }
.business-page-event .business-mosaic .tile-mini-c { grid-area: 9 / 8 / 13 / 10; }
.business-page-event .business-mosaic .tile-mini-d { grid-area: 9 / 10 / 13 / 13; }
.columns-mosaic {
  height: min(62vh, 590px);
  min-height: 500px;
  grid-template-columns: repeat(14, minmax(0, 1fr));
  grid-template-rows: repeat(10, minmax(0, 1fr));
  gap: 12px;
}
.business-page-columns .columns-mosaic .tile {
  border-radius: 16px;
  box-shadow: 0 22px 70px rgba(0,0,0,.3), inset 0 1px 0 rgba(255,255,255,.09);
}
.columns-mosaic .tile-main { grid-area: 1 / 1 / 6 / 7; }
.columns-mosaic .tile-side { grid-area: 1 / 7 / 4 / 15; }
.columns-mosaic .tile-mini-a { grid-area: 6 / 1 / 9 / 4; }
.columns-mosaic .tile-mini-b { grid-area: 6 / 4 / 9 / 7; }
.columns-mosaic .tile-mini-e { grid-area: 4 / 7 / 8 / 11; }
.columns-mosaic .tile-mini-c { grid-area: 4 / 11 / 8 / 15; }
.columns-mosaic .tile-mini-f { grid-area: 8 / 7 / 11 / 12; }
.columns-mosaic .tile-mini-d { grid-area: 8 / 12 / 11 / 15; }
.brand-mosaic {
  grid-template-rows: repeat(10, minmax(0, 1fr));
  cursor: default;
}
.brand-mosaic .tile { cursor: pointer; }
.brand-mosaic .tile:focus-visible {
  outline: 1px solid rgba(11,224,135,.75);
  outline-offset: 4px;
}
.brand-mosaic .tile-main { grid-area: 1 / 1 / 6 / 8; }
.brand-mosaic .tile-side { grid-area: 1 / 8 / 6 / 13; }
.brand-mosaic .tile-wide { grid-area: 6 / 1 / 11 / 7; }
.brand-mosaic .tile-small { grid-area: 6 / 7 / 11 / 13; }
.community-mosaic {
  grid-template-rows: repeat(10, minmax(0, 1fr));
  gap: 10px;
}
.community-mosaic .tile-main { grid-area: 1 / 1 / 6 / 7; }
.community-mosaic .tile-side { grid-area: 1 / 7 / 4 / 10; }
.community-mosaic .tile-mini-a { grid-area: 1 / 10 / 4 / 13; }
.community-mosaic .tile-wide { grid-area: 4 / 7 / 7 / 13; }
.community-mosaic .tile-small { grid-area: 6 / 1 / 9 / 4; }
.community-mosaic .tile-mini-b { grid-area: 6 / 4 / 9 / 7; }
.community-mosaic .tile-mini-c { grid-area: 7 / 7 / 11 / 10; }
.community-mosaic .tile-mini-d { grid-area: 7 / 10 / 11 / 13; }
.community-mosaic .tile-mini-e { grid-area: 9 / 1 / 11 / 7; }
.business-page-event .tile-main img { object-position: 50% 46%; }
.business-page-event .tile-side img { object-position: 50% 45%; }
.business-page-event .tile-small img { object-position: 50% 48%; }
.business-page-event .tile-mini-a img { object-position: 50% 45%; }
.business-page-event .tile-mini-b img { object-position: 50% 50%; }
.business-page-event .tile-mini-c img { object-position: 50% 44%; }
.business-page-event .tile-mini-d img { object-position: 50% 72%; }
.business-page-columns .tile-main img { object-position: 50% 45%; }
.business-page-columns .tile-side img { object-position: 50% 48%; }
.business-page-columns .tile-mini-a img,
.business-page-columns .tile-mini-b img { object-position: 50% 48%; }
.business-page-columns .tile-mini-c img,
.business-page-columns .tile-mini-d img { object-position: 50% 0%; }
.business-page-columns .tile-mini-e img { object-position: 50% 46%; }
.business-page-columns .tile-mini-f img { object-position: 50% 48%; }
.business-page-brand .tile-main img,
.business-page-brand .tile-side img,
.business-page-brand .tile-wide img,
.business-page-brand .tile-small img { object-position: 50% 0%; }
.business-page-community .tile-main img { object-position: 50% 44%; }
.business-page-community .tile-side img,
.business-page-community .tile-wide img,
.business-page-community .tile-small img,
.business-page-community .tile-mini-a img,
.business-page-community .tile-mini-b img,
.business-page-community .tile-mini-c img,
.business-page-community .tile-mini-d img,
.business-page-community .tile-mini-e img { object-position: 50% 38%; }

/* ---------- service panels (unified dark glass, brand accent) ---------- */
.panels {
  display: flex; gap: 16px; max-width: var(--maxw); margin: 0 auto;
  padding: 0 40px;
}
.panel {
  flex: 1; min-height: clamp(340px, 42vh, 430px); padding: 0;
  display: flex; flex-direction: column; justify-content: flex-start;
  position: relative; overflow: hidden; border-radius: 18px;
  color: var(--ink); font: inherit; text-align: left; cursor: pointer;
  appearance: none; -webkit-appearance: none; text-decoration: none;
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.012));
  border: 1px solid var(--line);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
  transition: flex .6s cubic-bezier(.22,1,.36,1), border-color .4s ease, background .4s ease;
}
.panel:hover {
  border-color: rgba(255,255,255,.18);
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.02));
}
.panels:hover .panel { flex: .9; }
.panels:hover .panel:hover { flex: 1.45; }
.panel-media {
  position: relative; flex: 0 0 clamp(170px, 22vw, 230px); min-height: 170px; overflow: hidden;
  border-bottom: 1px solid rgba(255,255,255,.1);
  background: rgba(255,255,255,.04);
}
.panel-media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(4,5,8,.04), rgba(4,5,8,.66));
  pointer-events: none;
}
.panel-media img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  filter: saturate(.82) brightness(.72);
  transform: scale(1.01);
  transition: transform 1s cubic-bezier(.22,1,.36,1), filter .6s ease;
}
.panel-3 .panel-media img {
  object-position: 50% 26%;
  transform-origin: 50% 28%;
}
.panel:hover .panel-media img { transform: scale(1.07); filter: saturate(1) brightness(.86); }
.panel-top { position: relative; z-index: 1; padding: 18px 24px 0; }
.panel-top h3 { font-size: clamp(20px, 1.85vw, 28px); font-weight: 800; line-height: 1.18; letter-spacing: 0; }
.panel-art { position: absolute; inset: 0; margin: 0; }
/* soft dissolved brand glow — color bleeds up and melts into the glass (叠化) */
.panel-art::before {
  content: ""; position: absolute; inset: -40% -15% 0 -15%;
  opacity: .5; transition: opacity .7s ease; pointer-events: none;
  filter: blur(8px);
  animation: panel-drift 8s ease-in-out infinite;
}
.panel:hover .panel-art::before { opacity: .9; }
@keyframes panel-drift {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-8px) scale(1.06); }
}
/* faint sparse dot texture on top of the glow */
.panel-art::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(255,255,255,.5) 1px, transparent 1.4px);
  background-size: 22px 22px; opacity: .06;
  -webkit-mask-image: radial-gradient(80% 70% at 50% 55%, #000, transparent 75%);
  mask-image: radial-gradient(80% 70% at 50% 55%, #000, transparent 75%);
}
.art-grid::before  { background: radial-gradient(55% 45% at 32% 38%, rgba(140,99,247,.5), transparent 70%); }
.art-wave::before  { background: radial-gradient(55% 45% at 40% 45%, rgba(140,99,247,.4), transparent 68%), radial-gradient(50% 45% at 70% 65%, rgba(11,224,135,.3), transparent 70%); }
.art-burst::before { background: radial-gradient(50% 55% at 50% 80%, rgba(11,224,135,.45), transparent 72%); }
.art-flow::before  { background: radial-gradient(60% 50% at 50% 50%, rgba(140,99,247,.42), transparent 72%); }
.panel-bot { position: relative; z-index: 1; margin-top: clamp(22px, 3.8vh, 34px); padding: 0 24px 24px; }
.panel-bot .pnum { font-family: var(--serif); font-style: italic; font-size: 15px; margin-bottom: 10px;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.panel-bot p { font-size: 14px; line-height: 1.55; color: var(--ink-soft); max-width: 19em; }
@media (max-width: 900px) {
  .panels { flex-wrap: wrap; padding: 0 26px; }
  .panel { flex: 1 1 calc(50% - 8px); min-height: 280px; }
  .panel-media { min-height: 160px; }
  .panels:hover .panel, .panels:hover .panel:hover { flex: 1 1 calc(50% - 8px); }
}
@media (max-width: 560px) {
  .panel, .panels:hover .panel, .panels:hover .panel:hover { flex: 1 1 100%; min-height: 240px; }
}

/* ---------- about intro (text + facts, two columns) ---------- */
.about-intro { display: grid; grid-template-columns: 1.25fr 1fr; gap: 56px; align-items: start; }
.about-intro > div p { color: var(--ink-soft); }
.about-intro .facts { gap: 36px 32px; }
@media (max-width: 760px) { .about-intro { grid-template-columns: 1fr; gap: 40px; } }

/* ---------- video case cards (客户案例) ---------- */
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.vid-card { display: block; position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: var(--bg-soft); transition: border-color .3s, transform .3s; }
.vid-card:hover { border-color: rgba(255,255,255,.18); transform: translateY(-3px); }
.vid-card .cover { position: relative; aspect-ratio: 16 / 9; overflow: hidden; }
.vid-card .cover img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.9) brightness(.68); transition: transform .9s cubic-bezier(.22,1,.36,1), filter .6s ease; }
.vid-card:hover .cover img { transform: scale(1.05); filter: saturate(1.05) brightness(.85); }
.vid-card .play { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; }
.vid-card .play span {
  width: 66px; height: 66px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.3);
  backdrop-filter: blur(10px) saturate(160%); -webkit-backdrop-filter: blur(10px) saturate(160%);
  box-shadow: 0 8px 26px rgba(0,0,0,.4), inset 0 1px 0 rgba(255,255,255,.4);
  transition: transform .35s cubic-bezier(.34,1.56,.5,1), background .3s;
}
.vid-card:hover .play span { transform: scale(1.12); background: rgba(255,255,255,.2); }
.vid-card .play svg { width: 22px; height: 22px; margin-left: 3px; fill: #fff; }
.vid-card .meta { padding: 24px 26px; }
.vid-card .meta .t { font-family: var(--serif); font-style: italic; font-size: 14px; color: var(--ink-faint); margin-bottom: 10px; }
.vid-card .meta h3 { font-size: clamp(20px,2vw,24px); font-weight: 700; line-height: 1.35; letter-spacing: 0; }
.vid-card .meta .src { margin-top: 10px; font-size: 12.5px; color: var(--ink-faint); display: inline-flex; align-items: center; gap: 7px; }
.vid-card .meta .src::before { content: "▶"; font-size: 9px; color: var(--green); }
@media (max-width: 760px) { .case-grid { grid-template-columns: 1fr; } }

/* ---------- feature band (incubation highlight) ---------- */
.band {
  border-radius: 24px; padding: 64px 56px; color: #fff; overflow: hidden;
  position: relative; isolation: isolate;
  background: #0c0d12;
  background-image: radial-gradient(900px 460px at 8% -10%, rgba(139,108,255,.4), transparent 60%),
                    radial-gradient(800px 460px at 98% 120%, rgba(52,211,153,.32), transparent 60%);
  border: 1px solid var(--line);
  display: grid; grid-template-columns: .82fr 1.18fr; gap: 48px; align-items: center;
}
.band h2 { font-size: clamp(24px, 2.6vw, 34px); font-weight: 800; letter-spacing: 0; line-height: 1.28; }
.band p { margin-top: 18px; color: rgba(255,255,255,.74); font-size: 16px; }
.band .btn { margin-top: 32px; background: #fff; color: #08090c; }
.band .btn:hover { opacity: .9; }
.incubation-map {
  min-width: 0; padding: 20px; border-radius: 20px;
  background: linear-gradient(180deg, rgba(140,99,247,.22), rgba(11,224,135,.12));
  border: 1px solid rgba(255,255,255,.13);
}
.map-expand {
  display: grid; grid-template-columns: 190px minmax(0, 1fr);
  gap: 14px; align-items: stretch;
}
.map-expand:not([open]) {
  display: block;
}
.map-expand > summary {
  list-style: none; cursor: pointer;
  display: grid; grid-template-columns: 1fr; gap: 10px;
}
.map-expand > summary:focus { outline: none; }
.map-expand > summary:focus-visible {
  outline: 1px solid rgba(11,224,135,.52);
  outline-offset: 5px;
  border-radius: 12px;
}
.map-expand:not([open]) > summary {
  grid-template-columns: 1fr;
}
.map-expand > summary::-webkit-details-marker { display: none; }
.phase-card {
  min-height: 96px; padding: 16px 14px; border-radius: 10px;
  background: rgba(255,255,255,.9); color: #14151b; text-align: center;
  display: grid; align-content: center; gap: 6px;
}
.map-expand:not([open]) .phase-card {
  min-height: 118px;
}
.phase-card b {
  font-size: 24px; line-height: 1; color: #0e0f15; letter-spacing: 0;
}
.phase-card span { font-weight: 800; font-size: 14px; }
.phase-card small { color: rgba(20,21,27,.62); font-size: 12px; line-height: 1.35; }
.phase-card-main {
  position: relative; padding: 18px 48px 18px 18px; overflow: hidden; background: rgba(11,224,135,.95);
  color: #07120c; border: 1px solid rgba(11,224,135,.5);
  box-shadow: 0 20px 70px rgba(11,224,135,.2);
}
.phase-card-main::after {
  content: "+"; position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
  width: 28px; height: 28px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.9); color: #08090c; font-weight: 900;
}
.map-expand[open] .phase-card-main::after { content: "-"; }
.phase-card-main b { color: #fff; text-shadow: 0 1px 14px rgba(0,0,0,.18); }
.phase-card-main span { font-size: 15px; }
.phase-card-main small { color: rgba(7,18,12,.72); }
.map-detail {
  min-width: 0; padding: 18px; display: grid; gap: 16px; align-content: center;
  background: linear-gradient(180deg, rgba(12,13,18,.76), rgba(12,13,18,.54));
  border: 1px solid rgba(11,224,135,.34); border-radius: 12px;
}
.map-label {
  justify-self: center; padding: 6px 14px; border-radius: 999px;
  font-size: 12px; line-height: 1; letter-spacing: .12em; color: rgba(255,255,255,.8);
  background: rgba(255,255,255,.08); border: 1px dashed rgba(140,99,247,.58);
}
.challenge-row {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px; overflow: hidden; border-radius: 8px; border: 1px solid rgba(140,99,247,.3);
}
.challenge-row span {
  min-height: 42px; padding: 9px 8px; display: flex; align-items: center; justify-content: center;
  text-align: center; font-size: 12px; font-weight: 700; color: #fff;
  background: rgba(11,224,135,.24);
}
.service-orbits { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.service-orbits span {
  width: 66px; height: 66px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
  padding: 10px; text-align: center; font-size: 12px; font-weight: 800; line-height: 1.25; color: #fff;
  background: rgba(255,255,255,.08); border: 1px dashed rgba(140,99,247,.72);
}
.detail-label {
  font-size: 12px; line-height: 1; letter-spacing: .18em; text-transform: uppercase;
  color: rgba(255,255,255,.46); margin-bottom: 12px;
}

/* ---------- stages (incubation page) ---------- */
.stage { border-left: 1px solid var(--line); padding: 4px 0 4px 36px; margin-bottom: 64px; position: relative; }
.stage::before { content: ""; position: absolute; left: -1px; top: 6px; width: 2px; height: 46px; background: var(--grad); }
.stage .phase { font-family: var(--serif); font-style: italic; font-size: 15px; color: var(--violet); letter-spacing: .06em; }
.stage h3 { font-size: clamp(22px,2.2vw,30px); font-weight: 800; margin: 10px 0 6px; line-height: 1.25; letter-spacing: 0; }
.stage .who { font-size: 14px; color: var(--ink-faint); margin-bottom: 20px; }
.stage .chips { display: flex; flex-wrap: wrap; gap: 11px; }
.stage-groups { display: grid; gap: 18px; margin-top: 20px; }
.stage .detail-label {
  color: var(--ink-faint); margin-bottom: 12px;
}

/* ---------- team ---------- */
.team-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.team-card { padding: 52px 44px; background: var(--bg); transition: background .3s ease; }
.team-card:hover { background: var(--bg-soft); }
.team-card .avatar {
  width: 64px; height: 64px; border-radius: 50%; margin-bottom: 26px;
  background: var(--grad); color: #08090c; font-size: 24px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.team-card .role { font-size: 12.5px; color: var(--violet); font-weight: 600; margin-bottom: 14px; letter-spacing: .08em; }
.team-card h3 { font-size: 26px; font-weight: 800; }
.team-card p { color: var(--ink-soft); font-size: 15px; margin-top: 14px; }

/* ---------- facts ---------- */
.facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; }
.fact .v { font-size: clamp(30px,3vw,42px); font-weight: 800; letter-spacing: -.01em; }
.fact .v.grad-num { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.fact .k { font-size: 13.5px; color: var(--ink-faint); margin-top: 8px; }

/* ---------- big image band (section background) ---------- */
.imgband {
  position: relative; padding: 150px 0; overflow: hidden; border-radius: 0;
}
.imgband .bg { position: absolute; inset: 0; overflow: hidden; }
.imgband .bg img { width: 100%; height: 100%; object-fit: cover; filter: brightness(.4) saturate(.9); }
/* original "solar-system turntable" illustration */
.imgband .orrery svg {
  position: absolute; right: -4%; top: 50%; transform: translateY(-50%);
  width: min(680px, 62vw); height: auto; opacity: .6;
  -webkit-mask-image: radial-gradient(70% 70% at 60% 50%, #000 55%, transparent 100%);
  mask-image: radial-gradient(70% 70% at 60% 50%, #000 55%, transparent 100%);
}
.imgband .bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, var(--bg) 8%, transparent 60%), linear-gradient(180deg, var(--bg), transparent 22%, transparent 78%, var(--bg)); }
@media (max-width: 760px) { .imgband .orrery svg { opacity: .35; right: -20%; } }
.imgband .wrap { position: relative; }
.imgband h2 { font-size: clamp(28px,3.4vw,46px); font-weight: 800; letter-spacing: 0; line-height: 1.22; max-width: 760px; }
.imgband p { margin-top: 22px; color: var(--ink-soft); font-size: 17px; max-width: 560px; }

/* ---------- cta ---------- */
.cta { text-align: center; padding: 140px 0; }
.cta h2 { font-size: clamp(30px, 3.6vw, 52px); font-weight: 800; letter-spacing: 0; line-height: 1.2; }
.cta p { margin-top: 20px; color: var(--ink-soft); font-size: 17px; }
.cta .btn { margin-top: 40px; }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--line); padding: 70px 0 50px; }
.foot-inner { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.foot-logo { height: 22px; width: auto; }
.foot-brand .mission { margin-top: 16px; font-size: 13.5px; color: var(--ink-faint); }
.foot-meta { font-size: 13px; color: var(--ink-faint); text-align: right; line-height: 1.9; }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s cubic-bezier(.22,1,.36,1); transition-delay: var(--rd, 0s); }
.reveal.in { opacity: 1; transform: none; }
.reveal-scale { transform: translateY(28px) scale(.95); }
.reveal-scale.in { transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .rise, .hero .line-inner { transition: none; opacity: 1; transform: none; }
  .marquee-track { animation: none; }
  .fv-logo, .fv-scroll { animation: none; }
  #stalker { display: none !important; }
}

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .wrap { padding-left: 26px; padding-right: 26px; }
  .grid-3, .grid-4, .svc-grid, .team-grid { grid-template-columns: repeat(2, 1fr); }
  .community-showcase { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 34px 26px; }
  .band { grid-template-columns: 1fr; padding: 44px 30px; }
  .map-expand { grid-template-columns: minmax(150px, .7fr) minmax(260px, 1fr); overflow-x: auto; padding-bottom: 4px; }
  .challenge-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .service-orbits span { width: 64px; height: 64px; }
  .facts { grid-template-columns: repeat(2, 1fr); }
  .work { grid-template-columns: 1fr; gap: 24px; padding: 48px 0; }
  .work:nth-child(even) .work-media { order: 0; }
  .row-item { grid-template-columns: 50px 1fr; }
  .row-item .row-desc { grid-column: 1 / -1; }
  section { padding: 80px 0; }
  .hero { padding: 130px 0 80px; min-height: 0; }
  #wave-canvas { top: -4%; right: -45%; width: 128%; height: 108%; opacity: .28; }
  .netsec { margin-top: -70px; padding-top: 138px; }
  .netsec::before { height: 150px; }
  #net-canvas { top: -88px; height: calc(100% + 110px); opacity: .58; }
  .business-pages { margin-top: 58px; }
  .business-page {
    min-height: auto;
    padding: 78px 0;
  }
  .business-page-inner,
  .business-page-inner-alt {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-left: 26px;
    padding-right: 26px;
  }
  .business-page-inner-alt .business-mosaic {
    order: 2;
  }
  .business-page-inner-alt .business-copy {
    order: 1;
  }
  .business-copy {
    max-width: 640px;
  }
  .business-mosaic {
    min-height: 390px;
    height: min(58vh, 520px);
  }
  .business-page-event .business-mosaic {
    min-height: 430px;
    height: min(60vh, 560px);
  }
  .page-head { padding: 150px 0 60px; }
  .business-landing { min-height: 0; padding: 140px 0 74px; }
  .business-landing-copy { grid-template-columns: 1fr; gap: 22px; margin-bottom: 36px; }
  .case-panel {
    grid-template-columns: 1fr;
    grid-template-areas: "viewer" "copy" "thumbs";
    overflow-y: auto;
  }
  .case-copy { align-self: start; padding-right: 36px; }
  .case-viewer img { height: min(52svh, 460px); }
}
@media (max-width: 700px) {
  .nav-inner { width: 100%; justify-content: space-between; gap: 12px; overflow: visible; }
  .nav-links {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: rgba(14,15,21,.92); backdrop-filter: blur(22px);
    border: 1px solid rgba(255,255,255,.1); border-radius: 20px;
    padding: 10px 20px 16px;
    box-shadow: 0 18px 50px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.08);
  }
  .nav-links.open { display: flex; align-items: stretch; }
  .nav-links a { padding: 12px 0; width: 100%; }
  .nav-links a.nav-cta { margin-top: 8px; }
  .nav-ind { display: none; }
  .nav-toggle { display: block; }
  .hero .sub { margin-top: 24px; font-size: 16px; font-weight: 300; color: rgba(243,244,247,.64); }
  .hero .en-slogan { max-width: 310px; font-size: 11px; letter-spacing: .18em; }
  .hero-proof { margin-top: 22px; gap: 8px; }
  .hero-proof span { min-height: 32px; padding: 7px 11px; font-size: 12px; }
  .hero-actions { margin-top: 34px; }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4, .svc-grid, .team-grid { grid-template-columns: 1fr; }
  .community-showcase { grid-template-columns: 1fr; }
  .community-media { aspect-ratio: 16 / 10; }
  .case-lightbox { padding: 14px; }
  .case-panel { width: calc(100vw - 28px); max-height: calc(100svh - 28px); padding: 18px; gap: 18px; border-radius: 14px; }
  .case-copy h3 { font-size: 26px; }
  .case-copy p { font-size: 14.5px; }
  .case-viewer img { height: min(42svh, 330px); }
  .case-thumb { flex-basis: 76px; height: 52px; }
  .business-page { padding: 64px 0; }
  .business-copy h3 { font-size: clamp(34px, 10vw, 46px); }
  .business-copy p { font-size: 15px; }
  .business-tags { gap: 8px; margin-top: 22px; }
  .business-tags span,
  .business-tags a { min-height: 30px; padding: 6px 11px; font-size: 12px; }
  .business-link { margin-top: 28px; font-size: 13px; }
  .business-mosaic {
    min-height: 520px;
    height: auto;
    grid-template-columns: 1fr;
    grid-template-rows: none;
  }
  .business-page-event .business-mosaic {
    min-height: 520px;
    height: auto;
    grid-template-rows: none;
  }
  .business-mosaic .tile,
  .business-mosaic .tile-main,
  .business-mosaic .tile-side,
  .business-mosaic .tile-wide,
  .business-mosaic .tile-small,
  .columns-mosaic .tile-mini-a,
  .columns-mosaic .tile-mini-b,
  .columns-mosaic .tile-mini-c,
  .columns-mosaic .tile-mini-d,
  .columns-mosaic .tile-mini-e,
  .columns-mosaic .tile-mini-f,
  .community-mosaic .tile-mini-a,
  .community-mosaic .tile-mini-b,
  .community-mosaic .tile-mini-c,
  .community-mosaic .tile-mini-d,
  .community-mosaic .tile-mini-e,
  .business-page-event .business-mosaic .tile-mini-a,
  .business-page-event .business-mosaic .tile-mini-b,
  .business-page-event .business-mosaic .tile-mini-c,
  .business-page-event .business-mosaic .tile-mini-d,
  .brand-mosaic .tile-main,
  .brand-mosaic .tile-side,
  .brand-mosaic .tile-wide,
  .brand-mosaic .tile-small {
    grid-area: auto;
    min-height: 180px;
    aspect-ratio: 16 / 10;
  }
  .business-mosaic .tile:not(.tile-main):not(.tile-side) {
    min-height: 150px;
  }
  .columns-mosaic .tile-main,
  .columns-mosaic .tile-side,
  .columns-mosaic .tile-mini-a,
  .columns-mosaic .tile-mini-b,
  .columns-mosaic .tile-mini-c,
  .columns-mosaic .tile-mini-d,
  .columns-mosaic .tile-mini-e,
  .columns-mosaic .tile-mini-f {
    transform: none;
  }
  .facts { grid-template-columns: 1fr 1fr; }
  .foot-meta { text-align: left; }
  .business-case-grid { grid-template-columns: 1fr; }
  .business-case-grid .card { min-height: 0; padding: 24px; }
  .business-case-grid .case-line { padding-top: 18px; }
}

/* ---------- minimal two-page site ---------- */
.minimal-site .nav-inner {
  width: fit-content;
  min-width: 0;
  justify-content: flex-start;
  gap: 34px;
  padding: 0 10px 0 18px;
}
.minimal-site .brand .logo-img {
  height: 25px;
}
.minimal-site .nav-links a {
  min-width: 88px;
  text-align: center;
}
.minimal-site .hero-copy {
  max-width: 920px;
}
.minimal-site .hero h1 {
  font-size: clamp(38px, 4.65vw, 68px);
}
.minimal-site .hero .sub {
  max-width: clamp(342px, 41.8vw, 612px);
  font-size: 16px;
  line-height: 1.82;
  color: rgba(243,244,247,.7);
}

.contact-page {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
}
.contact-main {
  flex: 1;
}
.contact-only {
  min-height: calc(100svh - 205px);
  padding: 168px 0 108px;
  display: flex;
  align-items: center;
}
.contact-only .sec-head {
  margin-bottom: 72px;
}
.contact-only .sec-head h1 {
  font-size: clamp(38px, 4.4vw, 60px);
  font-weight: 750;
  line-height: 1.2;
  letter-spacing: 0;
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 56px;
}
.contact-item {
  min-width: 0;
  padding-top: 30px;
  border-top: 1px solid var(--line);
  transition: border-color .35s ease;
}
.contact-item:hover {
  border-top-color: rgba(255,255,255,.34);
}
.contact-link {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  height: 100%;
  cursor: pointer;
}
.contact-link:focus-visible {
  outline: 1px solid rgba(255,255,255,.5);
  outline-offset: 10px;
}
.contact-item .num {
  margin-bottom: 18px;
  color: var(--ink-faint);
  font-family: var(--serif);
  font-size: 14px;
  font-style: italic;
  letter-spacing: .14em;
}
.contact-item h2 {
  margin-bottom: 14px;
  font-size: 21px;
  font-weight: 650;
  letter-spacing: 0;
}
.contact-item p {
  color: var(--ink-soft);
  font-size: 15.5px;
  line-height: 1.85;
  margin-bottom: 26px;
  overflow-wrap: anywhere;
}
.contact-qr {
  display: block;
  width: 132px;
  height: 132px;
  margin-top: auto;
  object-fit: contain;
  background: #fff;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 4px;
  opacity: .9;
  transition: opacity .35s ease, transform .45s cubic-bezier(.22,1,.36,1);
}
.contact-link:hover .contact-qr {
  opacity: 1;
  transform: translateY(-3px);
}
.minimal-site .foot-logo {
  height: 34px;
}
.contact-page .foot-meta {
  max-width: 460px;
}
.contact-page .foot-address {
  color: var(--ink-soft);
}
.contact-page .foot-copyright {
  margin-top: 12px;
  color: var(--ink-faint);
}

@media (max-width: 760px) {
  .minimal-site .nav {
    top: 12px;
    padding: 0 14px;
  }
  .minimal-site .nav-inner {
    width: fit-content;
    max-width: 100%;
    height: 54px;
    padding: 0 8px 0 15px;
    gap: 14px;
    overflow: hidden;
  }
  .minimal-site .brand .logo-img {
    height: 21px;
  }
  .minimal-site .nav-links {
    display: flex;
    position: relative;
    inset: auto;
    flex-direction: row;
    align-items: center;
    width: auto;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .minimal-site .nav-links a {
    width: auto;
    min-width: 84px;
    padding: 8px 12px;
  }
  .minimal-site .hero {
    min-height: 100svh;
    padding: 110px 0 42px;
  }
  .minimal-site #wave-canvas {
    top: 0;
    right: -36%;
    width: 142%;
    height: 112%;
    opacity: .58;
  }
  .minimal-site .hero h1 {
    font-size: clamp(28px, 9vw, 38px);
    line-height: 1.16;
  }
  .minimal-site .hero .line-inner {
    white-space: nowrap;
  }
  .minimal-site .hero .sub {
    max-width: 93%;
    margin-top: 24px;
    font-size: 13.5px;
    line-height: 1.72;
  }
  .minimal-site .hero .sub p + p {
    margin-top: 10px;
  }
  .minimal-site .fv-logo {
    width: min(88vw, 520px);
    max-height: 48vh;
  }
  .contact-only {
    min-height: auto;
    padding: 138px 0 82px;
  }
  .contact-only .sec-head {
    margin-bottom: 50px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 38px;
  }
  .contact-qr {
    width: 140px;
    height: 140px;
  }
  .contact-item p {
    margin-bottom: 22px;
  }
  .contact-page .foot-meta {
    max-width: none;
  }
  .contact-page footer {
    padding-top: 48px;
  }
}