/* ============================================================
   SVRAIC — Silicon Valley Robotics & AI Innovation Hub
   Dark-cinematic design system
   ============================================================ */

:root{
  /* surfaces */
  --void:#04070F;
  --bg:#070C18;
  --bg-2:#0A1122;
  --tint:#080E1D;
  --panel:rgba(255,255,255,.028);
  --panel-2:rgba(255,255,255,.05);
  --line:rgba(255,255,255,.085);
  --line-2:rgba(255,255,255,.14);

  /* brand */
  --blue:#3B82F6;
  --blue-2:#5B9CFF;
  --cyan:#7CE7FF;
  --lime:#A3E635;
  --lime-2:#7ED321;

  /* type */
  --text:#EEF2FA;
  --dim:#95A2BC;
  --faint:#616E8A;

  --f-en:'Space Grotesk','Manrope',ui-sans-serif,system-ui,sans-serif;
  --f-ui:'Manrope','Noto Sans SC',-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;

  --grad:linear-gradient(96deg,#7CE7FF 0%,#5B9CFF 44%,#A3E635 100%);
  --r:18px;
  --ease:cubic-bezier(.22,.75,.2,1);
  --nav-h:88px;
}

*,*::before,*::after{ margin:0; padding:0; box-sizing:border-box; }

html{ scroll-behavior:smooth; scroll-padding-top:calc(var(--nav-h) + 12px); -webkit-text-size-adjust:100%; }

body{
  font-family:var(--f-ui);
  background:var(--void);
  color:var(--text);
  line-height:1.72;
  font-size:16px;
  letter-spacing:.005em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

a{ color:inherit; text-decoration:none; }
button{ font:inherit; color:inherit; background:none; border:none; cursor:pointer; }
img{ display:block; max-width:100%; }
ul,ol{ list-style:none; }
::selection{ background:rgba(91,156,255,.32); color:#fff; }

.en{ font-family:var(--f-en); font-feature-settings:'ss01'; }
.grad{
  background:var(--grad);
  -webkit-background-clip:text; background-clip:text;
  color:transparent; -webkit-text-fill-color:transparent;
}

.wrap{ width:100%; max-width:1240px; margin:0 auto; padding:0 clamp(20px,4vw,44px); }
.wrap-narrow{ max-width:900px; }

/* ============ AMBIENT: GRAIN / PROGRESS / CURSOR ============ */
.grain{
  position:fixed; inset:-120% ; z-index:9000; pointer-events:none;
  opacity:.05; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grainShift 7s steps(6) infinite;
}
@keyframes grainShift{
  0%{transform:translate(0,0)} 16%{transform:translate(-3%,2%)} 33%{transform:translate(2%,-3%)}
  50%{transform:translate(-2%,-2%)} 66%{transform:translate(3%,1%)} 83%{transform:translate(-1%,3%)} 100%{transform:translate(0,0)}
}

.scroll-progress{ position:fixed; top:0; left:0; right:0; height:2px; z-index:9100; pointer-events:none; }
.scroll-progress i{
  display:block; height:100%; width:0%;
  background:var(--grad);
  box-shadow:0 0 14px rgba(91,156,255,.75);
  transition:width .08s linear;
}

.cursor{ position:fixed; top:0; left:0; z-index:9500; pointer-events:none; display:none; }
.cursor-dot{
  position:fixed; width:6px; height:6px; border-radius:50%; background:var(--cyan);
  transform:translate(-50%,-50%); box-shadow:0 0 12px rgba(124,231,255,.9);
}
.cursor-ring{
  position:fixed; width:34px; height:34px; border-radius:50%;
  border:1px solid rgba(124,231,255,.5); transform:translate(-50%,-50%);
  transition:width .28s var(--ease),height .28s var(--ease),background .28s,border-color .28s;
}
.cursor.hot .cursor-ring{ width:58px; height:58px; background:rgba(124,231,255,.09); border-color:rgba(163,230,53,.65); }
@media (hover:hover) and (pointer:fine){
  .cursor{ display:block; }
}

/* ============ LOADER ============ */
.loader{
  position:fixed; inset:0; z-index:9800; background:var(--void);
  display:grid; place-items:center;
  transition:opacity .6s ease,visibility .6s;
}
.loader.done{ opacity:0; visibility:hidden; }
.loader-inner{ display:flex; flex-direction:column; align-items:center; gap:20px; }
.loader-mark{ width:56px; height:56px; object-fit:contain; animation:markPulse 1.6s ease-in-out infinite; }
@keyframes markPulse{ 0%,100%{opacity:.55; transform:scale(.94)} 50%{opacity:1; transform:scale(1)} }
.loader-bar{ width:190px; height:2px; background:rgba(255,255,255,.1); overflow:hidden; border-radius:2px; }
.loader-bar i{ display:block; height:100%; width:35%; background:var(--grad); animation:barSlide 1.1s var(--ease) infinite; }
@keyframes barSlide{ 0%{transform:translateX(-110%)} 100%{transform:translateX(390%)} }
.loader-txt{ font-size:10px; letter-spacing:.28em; color:var(--faint); }

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding:13px 24px; border-radius:100px; font-size:15px; font-weight:600;
  letter-spacing:.01em; white-space:nowrap; position:relative; overflow:hidden;
  transition:transform .25s var(--ease),box-shadow .3s,background .3s,border-color .3s,color .3s;
  will-change:transform;
}
.btn svg{ width:17px; height:17px; transition:transform .3s var(--ease); }
.btn:hover svg{ transform:translateX(4px); }
.btn-lg{ padding:16px 30px; font-size:16px; }

.btn-primary{ background:var(--grad); color:#04121F; font-weight:700; box-shadow:0 6px 26px rgba(59,130,246,.28); }
.btn-primary::after{
  content:''; position:absolute; inset:0; border-radius:inherit;
  background:linear-gradient(100deg,transparent 20%,rgba(255,255,255,.55),transparent 80%);
  transform:translateX(-130%); transition:transform .7s var(--ease);
}
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 12px 40px rgba(91,156,255,.42); }
.btn-primary:hover::after{ transform:translateX(130%); }

.btn-ghost{ background:rgba(255,255,255,.04); color:var(--text); border:1px solid var(--line-2); backdrop-filter:blur(8px); }
.btn-ghost:hover{ background:rgba(255,255,255,.08); border-color:rgba(124,231,255,.5); transform:translateY(-2px); }
.btn-block{ display:flex; width:100%; }

/* ============ HEADER ============ */
#site-header{
  position:fixed; top:0; left:0; right:0; z-index:800;
  transition:background .35s,border-color .35s,backdrop-filter .35s;
  border-bottom:1px solid transparent;
}
#site-header.stuck{
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(18px) saturate(150%);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  border-bottom-color:var(--line);
}
nav{ height:var(--nav-h); display:flex; align-items:center; justify-content:space-between; gap:24px; }

.brand{ display:flex; align-items:center; gap:15px; flex-shrink:0; }
.brand-mark{
  width:56px; height:56px; display:grid; place-items:center; flex-shrink:0;
  border-radius:15px; background:rgba(255,255,255,.05); border:1px solid var(--line);
  transition:box-shadow .3s,border-color .3s;
}
.brand:hover .brand-mark{ border-color:rgba(124,231,255,.4); box-shadow:0 0 22px rgba(91,156,255,.3); }
.brand-mark img{ width:36px; height:36px; object-fit:contain; }
.brand-cn{ display:block; font-size:21px; font-weight:700; letter-spacing:.02em; line-height:1.2; }
.brand-en{ display:block; font-size:11.5px; letter-spacing:.15em; color:var(--faint); margin-top:3px; white-space:nowrap; }

.nav-links{ display:flex; align-items:center; gap:6px; margin-left:auto; }
.nav-links a{
  position:relative; font-size:14.5px; color:var(--dim); padding:8px 14px; border-radius:100px;
  transition:color .25s,background .25s;
}
.nav-links a::after{
  content:''; position:absolute; left:14px; right:14px; bottom:4px; height:1px;
  background:var(--grad); transform:scaleX(0); transform-origin:left; transition:transform .35s var(--ease);
}
.nav-links a:hover{ color:var(--text); }
.nav-links a:hover::after,.nav-links a.active::after{ transform:scaleX(1); }
.nav-links a.active{ color:var(--text); }

.nav-right{ display:flex; align-items:center; gap:12px; }

.lang-switch{
  position:relative; display:flex; padding:3px; border-radius:100px;
  background:rgba(255,255,255,.05); border:1px solid var(--line);
}
.lang-switch button{
  position:relative; z-index:1; padding:5px 12px; font-size:12.5px; font-weight:600;
  color:var(--faint); border-radius:100px; transition:color .3s; font-family:var(--f-ui);
}
.lang-switch button.active{ color:#04121F; }
.lang-pill{
  position:absolute; top:3px; left:3px; height:calc(100% - 6px); width:48px;
  border-radius:100px; background:var(--grad); transition:transform .38s var(--ease),width .38s var(--ease);
}

.nav-toggle{ display:none; width:40px; height:40px; border-radius:12px; border:1px solid var(--line); flex-direction:column; align-items:center; justify-content:center; gap:5px; }
.nav-toggle span{ display:block; width:17px; height:1.5px; background:var(--text); border-radius:2px; transition:transform .3s var(--ease),opacity .2s; }
.nav-toggle.open span:nth-child(1){ transform:translateY(3.2px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ transform:translateY(-3.2px) rotate(-45deg); }

/* mobile menu */
.mobile-menu{
  position:fixed; inset:0; z-index:790; background:rgba(4,7,15,.97);
  backdrop-filter:blur(24px); -webkit-backdrop-filter:blur(24px);
  opacity:0; visibility:hidden; transition:opacity .38s var(--ease),visibility .38s;
  display:flex; align-items:center; overflow-y:auto;
}
.mobile-menu.open{ opacity:1; visibility:visible; }
.mm-inner{ width:100%; padding:calc(var(--nav-h) + 30px) clamp(24px,7vw,48px) 44px; }
.mobile-menu a{
  display:flex; align-items:baseline; gap:16px; padding:16px 0;
  font-size:clamp(22px,6vw,30px); font-weight:700; letter-spacing:-.01em;
  border-bottom:1px solid var(--line);
  opacity:0; transform:translateY(18px);
  transition:opacity .5s var(--ease),transform .5s var(--ease),color .25s;
}
.mobile-menu.open a{ opacity:1; transform:none; }
.mobile-menu.open a:nth-child(1){transition-delay:.06s} .mobile-menu.open a:nth-child(2){transition-delay:.10s}
.mobile-menu.open a:nth-child(3){transition-delay:.14s} .mobile-menu.open a:nth-child(4){transition-delay:.18s}
.mobile-menu.open a:nth-child(5){transition-delay:.22s} .mobile-menu.open a:nth-child(6){transition-delay:.26s}
.mobile-menu.open a:nth-child(7){transition-delay:.30s}
.mobile-menu a i{ font-size:11px; letter-spacing:.16em; color:var(--faint); font-style:normal; }
.mobile-menu a:hover{ color:var(--cyan); }
.mm-foot{ margin-top:30px; border:0; }
.mm-foot .btn{ margin-bottom:14px; }
.mm-foot p{ font-size:11.5px; letter-spacing:.12em; color:var(--faint); text-align:center; }
.mobile-menu .mm-foot a{ border:0; padding:0; font-size:16px; opacity:1; transform:none; }

/* ============ HERO ============ */
.hero{
  position:relative; min-height:100svh; display:flex; align-items:center;
  padding:calc(var(--nav-h) + 60px) 0 90px; overflow:hidden; isolation:isolate;
}
.hero-media{ position:absolute; inset:0; z-index:-3; }
.hero-img{
  width:100%; height:100%; object-fit:cover; object-position:center 42%;
  filter:saturate(.5) contrast(1.12) brightness(.42);
  transform:scale(1.06); animation:heroDrift 26s ease-in-out infinite alternate;
}
@keyframes heroDrift{ from{transform:scale(1.06) translate3d(0,0,0)} to{transform:scale(1.14) translate3d(-1.5%,-1.5%,0)} }
.hero-duotone{
  position:absolute; inset:0;
  background:linear-gradient(115deg,#0B2E7A 0%,#0A1A44 45%,#04070F 100%);
  mix-blend-mode:color; opacity:.9;
}
.hero-scrim{
  position:absolute; inset:0;
  background:
    linear-gradient(100deg,rgba(4,7,15,.94) 0%,rgba(4,7,15,.72) 42%,rgba(4,7,15,.28) 72%),
    linear-gradient(to bottom,rgba(4,7,15,.9) 0%,rgba(4,7,15,.15) 34%,rgba(4,7,15,.72) 82%,var(--void) 100%);
}
.hero-net{ position:absolute; inset:0; z-index:-2; width:100%; height:100%; opacity:.7; }

.hero-grid{
  position:absolute; inset:0; z-index:-2; pointer-events:none; opacity:.4;
  background-image:
    linear-gradient(rgba(124,231,255,.075) 1px,transparent 1px),
    linear-gradient(90deg,rgba(124,231,255,.075) 1px,transparent 1px);
  background-size:78px 78px;
  -webkit-mask-image:radial-gradient(ellipse 75% 62% at 50% 45%,#000 10%,transparent 78%);
  mask-image:radial-gradient(ellipse 75% 62% at 50% 45%,#000 10%,transparent 78%);
}

.aurora{ position:absolute; inset:0; z-index:-2; pointer-events:none; overflow:hidden; }
.aurora i{ position:absolute; display:block; border-radius:50%; filter:blur(95px); opacity:.5; }
.aurora .a1{ width:46vw; height:46vw; background:#1D4ED8; top:-14%; right:-8%; animation:float1 22s ease-in-out infinite alternate; }
.aurora .a2{ width:34vw; height:34vw; background:#0E7490; bottom:-16%; left:-6%; animation:float2 26s ease-in-out infinite alternate; }
.aurora .a3{ width:20vw; height:20vw; background:#4D7C0F; top:44%; right:22%; opacity:.3; animation:float1 30s ease-in-out infinite alternate-reverse; }
@keyframes float1{ from{transform:translate(0,0)} to{transform:translate(-7%,9%)} }
@keyframes float2{ from{transform:translate(0,0)} to{transform:translate(9%,-7%)} }

.hero-inner{ position:relative; z-index:2; }

.hero-eyebrow{
  display:inline-flex; align-items:center; gap:12px; flex-wrap:wrap;
  padding:8px 18px 8px 14px; border-radius:100px;
  background:rgba(255,255,255,.05); border:1px solid var(--line-2);
  backdrop-filter:blur(10px);
  font-size:11.5px; letter-spacing:.14em; color:var(--dim); text-transform:uppercase;
  margin-bottom:30px;
  opacity:0; animation:fadeUp .9s var(--ease) .15s forwards;
}
.hero-eyebrow .sep{ width:1px; height:11px; background:var(--line-2); }
.live-dot{ width:7px; height:7px; border-radius:50%; background:var(--lime); box-shadow:0 0 0 0 rgba(163,230,53,.7); animation:ping 2.2s infinite; flex-shrink:0; }
@keyframes ping{ 0%{box-shadow:0 0 0 0 rgba(163,230,53,.6)} 70%{box-shadow:0 0 0 9px rgba(163,230,53,0)} 100%{box-shadow:0 0 0 0 rgba(163,230,53,0)} }
@keyframes fadeUp{ from{opacity:0; transform:translateY(20px)} to{opacity:1; transform:none} }

.hero-title{
  font-size:clamp(2.7rem,7.4vw,6.1rem);
  line-height:1.04; font-weight:800; letter-spacing:-.028em;
  max-width:16ch; margin-bottom:26px;
}
.hero-title .grad{ display:inline; }

/* kinetic split text */
.ch{ display:inline-block; opacity:0; transform:translateY(.55em) rotateX(-55deg); transform-origin:50% 100%;
     animation:chIn .82s var(--ease) forwards; }
.word{ display:inline-block; white-space:nowrap; }
@keyframes chIn{ to{opacity:1; transform:none} }

.hero-sub{
  font-size:clamp(15.5px,1.6vw,18.5px); color:var(--dim); max-width:60ch; line-height:1.8;
  margin-bottom:34px; opacity:0; animation:fadeUp .9s var(--ease) .55s forwards;
}
.hero-actions{ display:flex; flex-wrap:wrap; gap:14px; margin-bottom:56px; opacity:0; animation:fadeUp .9s var(--ease) .68s forwards; }

.hero-stats{
  display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:clamp(14px,2.4vw,30px);
  padding-top:30px; border-top:1px solid var(--line);
  max-width:900px; opacity:0; animation:fadeUp .9s var(--ease) .82s forwards;
}
.hstat .n{ font-size:clamp(26px,3.6vw,42px); font-weight:700; line-height:1.05; letter-spacing:-.03em; background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.hstat .n em{ font-style:normal; font-size:.5em; margin-left:2px; }
.hstat .l{ font-size:12.5px; color:var(--faint); margin-top:6px; line-height:1.45; }

.hero-scroll{
  position:absolute; right:clamp(20px,4vw,44px); bottom:30px; z-index:3;
  display:flex; flex-direction:column; align-items:center; gap:9px;
  font-size:9.5px; letter-spacing:.28em; color:var(--faint);
  opacity:0; animation:fadeUp 1s var(--ease) 1.15s forwards; transition:color .3s;
}
.hero-scroll:hover{ color:var(--cyan); }
@media(max-height:820px){ .hero-scroll{ display:none; } }
.hero-scroll i{ display:block; width:1px; height:44px; background:linear-gradient(to bottom,var(--cyan),transparent); position:relative; overflow:hidden; }
.hero-scroll i::after{ content:''; position:absolute; top:0; left:0; width:100%; height:12px; background:var(--lime); animation:scrollDot 1.8s var(--ease) infinite; }
@keyframes scrollDot{ 0%{transform:translateY(-14px); opacity:0} 35%{opacity:1} 100%{transform:translateY(46px); opacity:0} }

/* ============ MARQUEE ============ */
.marquee{
  position:relative; overflow:hidden; padding:20px 0;
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  background:var(--bg-2);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 9%,#000 91%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 9%,#000 91%,transparent);
}
.marquee-track{ display:flex; width:max-content; animation:mq 42s linear infinite; }
.mq-set{ display:flex; align-items:center; }
.mq-set b{ font-family:var(--f-en); font-size:13px; font-weight:500; letter-spacing:.22em; color:var(--faint); white-space:nowrap; transition:color .3s; }
.marquee:hover .mq-set b{ color:var(--dim); }
.mq-set i{ display:block; width:5px; height:5px; border-radius:50%; background:var(--blue); margin:0 26px; opacity:.55; }
@keyframes mq{ from{transform:translateX(0)} to{transform:translateX(-50%)} }

/* ============ SECTION SHELL ============ */
.sec{ position:relative; padding:clamp(84px,10vw,150px) 0; background:var(--bg); }
.sec-dark{ background:var(--void); }
.sec-tint{ background:var(--tint); }
.sec-slim{ padding:clamp(56px,6vw,84px) 0; }

.glowline{
  position:absolute; top:0; left:0; right:0; height:1px;
  background:linear-gradient(90deg,transparent,rgba(91,156,255,.6),rgba(163,230,53,.4),transparent);
}

.sec-head{ max-width:820px; margin-bottom:clamp(44px,5.5vw,72px); }
.sec-tag{ display:inline-flex; align-items:center; gap:12px; margin-bottom:20px; }
.sec-tag i{ font-style:normal; font-size:11px; font-weight:600; letter-spacing:.1em; color:#04121F; background:var(--grad); padding:3px 8px; border-radius:6px; }
.sec-tag span{ font-size:11px; letter-spacing:.24em; color:var(--dim); }
.sec-head h2,.contact h2{
  font-size:clamp(2rem,4.4vw,3.5rem); line-height:1.14; font-weight:800; letter-spacing:-.025em;
}
.sec-desc{ margin-top:20px; font-size:clamp(15px,1.5vw,17px); color:var(--dim); line-height:1.82; max-width:62ch; }

/* reveal */
.reveal{ opacity:0; transform:translateY(30px); }
.reveal.in{
  opacity:1; transform:none;
  transition:opacity .85s var(--ease),transform .85s var(--ease);
  transition-delay:calc(var(--d,0) * 95ms);
}
@media (prefers-reduced-motion:reduce){
  .reveal{ opacity:1; transform:none; }
  .ch{ opacity:1; transform:none; animation:none; }
  .hero-eyebrow,.hero-sub,.hero-actions,.hero-stats,.hero-scroll{ opacity:1; animation:none; }
  .hero-img,.aurora i,.marquee-track,.grain{ animation:none; }
  html{ scroll-behavior:auto; }
}

/* ============ BENTO (WHY US) ============ */
.bento{ display:grid; grid-template-columns:repeat(6,1fr); gap:clamp(14px,1.6vw,20px); }
.bcard{
  position:relative; grid-column:span 3; overflow:hidden; border-radius:var(--r);
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));
  border:1px solid var(--line);
  transition:transform .5s var(--ease),border-color .4s,box-shadow .4s;
  display:flex; flex-direction:column;
}
.bcard-wide{ grid-column:span 6; }
@media(min-width:900px){
  .bcard-wide{ grid-column:span 3; }
  .bcard{ grid-column:span 3; }
  .bento > .bcard:nth-child(1){ grid-column:span 4; }
  .bento > .bcard:nth-child(2){ grid-column:span 2; }
  .bento > .bcard:nth-child(3){ grid-column:span 2; }
  .bento > .bcard:nth-child(4){ grid-column:span 4; }
}
.bcard:hover{ transform:translateY(-6px); border-color:var(--line-2); box-shadow:0 24px 60px rgba(0,0,0,.5); }
.bcard::before{
  content:''; position:absolute; inset:0; z-index:2; pointer-events:none; opacity:0;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),rgba(124,231,255,.13),transparent 62%);
  transition:opacity .35s;
}
.bcard:hover::before{ opacity:1; }
.bcard-media{ position:relative; height:clamp(170px,14.5vw,250px); overflow:hidden; flex-shrink:0; }
.bcard-media img{
  width:100%; height:100%; object-fit:cover;
  filter:saturate(.62) contrast(1.06) brightness(.78);
  transition:transform .8s var(--ease),filter .6s;
}
.bcard:hover .bcard-media img{ transform:scale(1.06); filter:saturate(.95) contrast(1.02) brightness(.9); }
.bcard-media::after{
  content:''; position:absolute; inset:0;
  background:linear-gradient(to bottom,rgba(6,14,32,.15),rgba(7,12,24,.92));
}
.bcard-body{ padding:clamp(22px,2.4vw,30px); position:relative; z-index:3; margin-top:-46px; flex:1; }
.bcard-kicker{ font-size:10px; letter-spacing:.22em; color:var(--cyan); margin-bottom:10px; }
.bcard-body h3{ font-size:clamp(19px,2vw,24px); font-weight:700; letter-spacing:-.015em; margin-bottom:12px; line-height:1.35; }
.bcard-body p{ font-size:14.5px; color:var(--dim); line-height:1.78; }
.bcard-chips{ display:flex; flex-wrap:wrap; gap:8px; margin-top:18px; }
.chip{
  font-size:11.5px; padding:5px 12px; border-radius:100px;
  background:rgba(255,255,255,.05); border:1px solid var(--line); color:var(--dim);
  letter-spacing:.04em;
}

/* ============ AREA VIZ ============ */
.area-viz{ margin-bottom:clamp(34px,4vw,52px); }
.area-bar{ display:flex; height:60px; border-radius:12px; overflow:hidden; border:1px solid var(--line); background:rgba(255,255,255,.02); }
.area-bar .seg{
  position:relative; width:var(--w); display:grid; place-items:center;
  transition:filter .3s,flex-basis .3s;
  border-right:1px solid rgba(4,7,15,.5);
}
.area-bar .seg:last-child{ border-right:0; }
.area-bar .seg b{ font-size:11.5px; font-weight:600; letter-spacing:.05em; color:#04121F; opacity:.92; }
.seg.s1{ background:linear-gradient(160deg,#7CE7FF,#4FC3F7); }
.seg.s2{ background:linear-gradient(160deg,#5B9CFF,#3B82F6); }
.seg.s3{ background:linear-gradient(160deg,#8BC34A,#A3E635); }
.seg.s4{ background:linear-gradient(160deg,#7ED321,#65A30D); }
.seg.s5{ background:linear-gradient(160deg,rgba(255,255,255,.14),rgba(255,255,255,.07)); }
.seg.s5 b{ color:var(--dim); }
.area-bar .seg:hover{ filter:brightness(1.15); }
.area-key{ display:flex; flex-wrap:wrap; gap:10px 26px; margin-top:16px; }
.area-key > span{ display:inline-flex; align-items:center; gap:8px; font-size:12.5px; color:var(--faint); }
.area-key i{ width:9px; height:9px; border-radius:3px; display:block; }
.area-key .k1{background:#5CD3F5} .area-key .k2{background:#4A90F7} .area-key .k3{background:#9BDC3E}
.area-key .k4{background:#74B916} .area-key .k5{background:rgba(255,255,255,.2)}

/* ============ ZONES ============ */
.zones{ display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:clamp(14px,1.6vw,20px); }
.zone{
  position:relative; border-radius:var(--r); overflow:hidden;
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.018));
  border:1px solid var(--line);
  display:flex; flex-direction:column;
  transition:transform .45s var(--ease),border-color .35s,box-shadow .35s;
}
.zone:hover{ transform:translateY(-6px); border-color:rgba(124,231,255,.35); box-shadow:0 24px 56px rgba(0,0,0,.55); }
.zone-media{ position:relative; aspect-ratio:16/10; overflow:hidden; }
.zone-media img{ width:100%; height:100%; object-fit:cover; filter:saturate(.55) brightness(.72) contrast(1.05); transition:transform .8s var(--ease),filter .5s; }
.zone:hover .zone-media img{ transform:scale(1.07); filter:saturate(.95) brightness(.86); }
.zone-media::after{ content:''; position:absolute; inset:0; background:linear-gradient(to bottom,rgba(7,12,24,.1),rgba(7,12,24,.85)); }
.zone-idx{
  position:absolute; top:14px; left:14px; z-index:2;
  font-size:11px; font-weight:600; letter-spacing:.1em; color:var(--text);
  padding:4px 9px; border-radius:7px; background:rgba(4,7,15,.6); border:1px solid var(--line-2);
  backdrop-filter:blur(6px);
}
.zone-body{ padding:22px clamp(18px,2vw,24px) 24px; display:flex; flex-direction:column; flex:1; }
.zone-body h3{ font-size:18px; font-weight:700; letter-spacing:-.01em; margin-bottom:8px; }
.zone-metric{ font-size:13px; color:var(--cyan); letter-spacing:.03em; margin-bottom:12px; font-weight:500; }
.zone-metric span{ color:var(--faint); font-size:12px; }
.zone-body p{ font-size:14px; color:var(--dim); line-height:1.75; flex:1; }
.zone-price{ display:flex; align-items:baseline; gap:7px; margin-top:20px; padding-top:16px; border-top:1px solid var(--line); }
.zone-price .p{ font-family:var(--f-en); font-size:20px; font-weight:700; letter-spacing:-.02em; background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.zone-price .u{ font-size:12.5px; color:var(--faint); }

.price-note{ margin-top:26px; font-size:12.5px; color:var(--faint); line-height:1.7; }

/* ============ PHASES ============ */
.bay-strip{ display:flex; flex-wrap:wrap; gap:10px; margin-bottom:clamp(34px,4vw,54px); }
.bay-chip{
  font-size:13px; padding:9px 18px; border-radius:100px; color:var(--dim);
  background:rgba(255,255,255,.04); border:1px solid var(--line);
  transition:border-color .3s,color .3s,transform .3s var(--ease);
}
.bay-chip:hover{ border-color:rgba(163,230,53,.45); color:var(--text); transform:translateY(-2px); }

.phases{ position:relative; display:grid; grid-template-columns:repeat(auto-fit,minmax(250px,1fr)); gap:clamp(16px,1.8vw,24px); }
.phase{ position:relative; }

/* connectors between phase nodes — only when all four sit on one row */
@media(min-width:1180px){
  .phases{ grid-template-columns:repeat(4,1fr); }
  .phase:not(:last-child)::after{
    content:''; position:absolute; top:19px; left:50px; right:calc(-1 * clamp(16px,1.8vw,24px));
    height:1px; background:linear-gradient(90deg,rgba(91,156,255,.75),rgba(163,230,53,.35));
    transform:scaleX(0); transform-origin:left;
    transition:transform .9s var(--ease); transition-delay:calc(var(--d,0) * 95ms + 340ms);
  }
  .phase.in:not(:last-child)::after{ transform:scaleX(1); }
}
.phase-node{
  width:38px; height:38px; border-radius:12px; display:grid; place-items:center;
  font-size:12.5px; font-weight:700; letter-spacing:.04em; color:#04121F;
  background:var(--grad); margin-bottom:22px; position:relative; z-index:2;
  box-shadow:0 0 0 6px var(--bg),0 6px 22px rgba(59,130,246,.3);
}
.phase-card{
  padding:clamp(20px,2.2vw,26px); border-radius:var(--r);
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));
  border:1px solid var(--line); height:calc(100% - 60px);
  transition:transform .45s var(--ease),border-color .35s,box-shadow .35s;
}
.phase:hover .phase-card{ transform:translateY(-5px); border-color:var(--line-2); box-shadow:0 20px 48px rgba(0,0,0,.45); }
.phase-tag{ font-size:10px; letter-spacing:.2em; color:var(--cyan); margin-bottom:10px; }
.phase-card h3{ font-size:22px; font-weight:800; letter-spacing:-.02em; margin-bottom:18px; }
.phase-card ul li{
  position:relative; padding-left:20px; font-size:14px; color:var(--dim); line-height:1.65;
  padding-bottom:11px; margin-bottom:11px; border-bottom:1px solid rgba(255,255,255,.05);
}
.phase-card ul li:last-child{ border-bottom:0; padding-bottom:0; margin-bottom:0; }
.phase-card ul li::before{
  content:''; position:absolute; left:2px; top:.62em; width:6px; height:6px; border-radius:2px;
  background:var(--lime); opacity:.85;
}

/* ============ AUDIENCE ============ */
.aud-layout{ display:grid; grid-template-columns:1.35fr .95fr; gap:clamp(22px,3vw,48px); align-items:start; }
@media(max-width:900px){ .aud-layout{ grid-template-columns:1fr; } }

.aud-item{ display:flex; gap:clamp(16px,2vw,26px); padding:26px 0; border-bottom:1px solid var(--line); }
.aud-item:first-child{ padding-top:0; }
.aud-num{
  font-size:clamp(28px,3.4vw,42px); font-weight:700; letter-spacing:-.03em; line-height:1;
  color:transparent; -webkit-text-stroke:1px rgba(124,231,255,.4); flex-shrink:0;
  transition:-webkit-text-stroke-color .35s;
}
.aud-item:hover .aud-num{ -webkit-text-stroke-color:rgba(163,230,53,.85); }
.aud-txt h4{ font-size:clamp(16.5px,1.8vw,20px); font-weight:700; margin-bottom:8px; letter-spacing:-.01em; }
.aud-txt p{ font-size:14.5px; color:var(--dim); line-height:1.78; }

.aud-side{
  padding:clamp(24px,2.6vw,32px); border-radius:var(--r);
  background:linear-gradient(165deg,rgba(91,156,255,.09),rgba(255,255,255,.02));
  border:1px solid var(--line);
}
.aud-side h4{ font-size:17px; font-weight:700; margin-bottom:18px; }
.amenity li{
  position:relative; padding-left:24px; font-size:14px; color:var(--dim); line-height:1.72;
  margin-bottom:14px;
}
.amenity li::before{
  content:''; position:absolute; left:0; top:.55em; width:11px; height:11px; border-radius:50%;
  border:1.5px solid var(--lime); opacity:.75;
}
.side-link{
  display:inline-flex; align-items:center; gap:8px; margin-top:12px;
  font-size:11px; letter-spacing:.16em; color:var(--cyan);
  padding-bottom:3px; border-bottom:1px solid rgba(124,231,255,.3); transition:gap .3s,color .3s;
}
.side-link svg{ width:14px; height:14px; }
.side-link:hover{ gap:13px; color:var(--lime); }

.verticals{ display:flex; flex-wrap:wrap; gap:10px; margin-top:clamp(34px,4vw,52px); }
.vchip{
  display:inline-flex; align-items:center; gap:8px; padding:9px 17px; border-radius:100px;
  font-size:13.5px; color:var(--dim);
  background:rgba(255,255,255,.035); border:1px solid var(--line);
  transition:transform .3s var(--ease),border-color .3s,color .3s,background .3s;
}
.vchip i{ font-style:normal; font-size:15px; line-height:1; }
.vchip:hover{ transform:translateY(-3px); color:var(--text); border-color:rgba(124,231,255,.45); background:rgba(124,231,255,.07); }

.gallery{ display:grid; grid-template-columns:1.5fr 1fr 1fr; gap:clamp(10px,1.2vw,16px); margin-top:clamp(28px,3vw,40px); }
@media(max-width:760px){ .gallery{ grid-template-columns:1fr 1fr; } .gallery .g1{ grid-column:span 2; } }
.gallery .g{ position:relative; overflow:hidden; border-radius:14px; height:clamp(200px,23vw,320px); border:1px solid var(--line); }
.gallery img{ width:100%; height:100%; object-fit:cover; filter:saturate(.5) brightness(.68) contrast(1.06); transition:transform .8s var(--ease),filter .5s; }
.gallery .g:hover img{ transform:scale(1.07); filter:saturate(1) brightness(.88); }
.gallery figcaption{
  position:absolute; left:14px; bottom:12px; z-index:2;
  font-size:10px; letter-spacing:.2em; color:var(--text);
  padding:4px 10px; border-radius:6px; background:rgba(4,7,15,.55); border:1px solid var(--line-2); backdrop-filter:blur(6px);
}

/* ============ ECOSYSTEM ============ */
.eco{ overflow:hidden; }
.eco-glow{
  position:absolute; top:8%; left:50%; transform:translateX(-50%);
  width:min(1000px,110vw); height:520px; pointer-events:none;
  background:radial-gradient(ellipse at center,rgba(59,130,246,.20),transparent 66%);
  filter:blur(30px);
}
.eco-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:clamp(14px,1.6vw,20px); position:relative; }
.eco-card{
  padding:clamp(24px,2.6vw,32px); border-radius:var(--r);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.014));
  border:1px solid var(--line); position:relative; overflow:hidden;
  transition:transform .45s var(--ease),border-color .35s,box-shadow .35s;
}
.eco-card::after{
  content:''; position:absolute; top:0; left:20%; right:20%; height:1px;
  background:linear-gradient(90deg,transparent,rgba(124,231,255,.7),transparent);
  opacity:0; transition:opacity .4s;
}
.eco-card:hover{ transform:translateY(-6px); border-color:var(--line-2); box-shadow:0 22px 54px rgba(0,0,0,.5); }
.eco-card:hover::after{ opacity:1; }
.eco-ico{
  width:46px; height:46px; border-radius:13px; display:grid; place-items:center; margin-bottom:20px;
  background:rgba(124,231,255,.09); border:1px solid rgba(124,231,255,.22); color:var(--cyan);
  transition:background .35s,color .35s,border-color .35s,transform .45s var(--ease);
}
.eco-ico svg{ width:23px; height:23px; }
.eco-card:hover .eco-ico{ background:rgba(163,230,53,.12); border-color:rgba(163,230,53,.35); color:var(--lime); transform:rotate(-6deg) scale(1.05); }
.eco-card h4{ font-size:18px; font-weight:700; margin-bottom:11px; letter-spacing:-.012em; }
.eco-card p{ font-size:14px; color:var(--dim); line-height:1.75; }
.eco-names{ margin-top:16px; padding-top:14px; border-top:1px solid var(--line); font-size:11px; letter-spacing:.1em; color:var(--faint); }

.eco-line{ margin-top:clamp(44px,5vw,72px); text-align:center; }
.eco-cn{ font-size:clamp(1.5rem,3.6vw,2.8rem); font-weight:800; letter-spacing:-.02em; line-height:1.3; }
.eco-en{ margin-top:14px; font-size:clamp(12px,1.5vw,15px); letter-spacing:.14em; color:var(--faint); }

/* ============ PARTNERS ============ */
.partners-head{ display:flex; flex-direction:column; gap:6px; margin-bottom:28px; }
.partners-head .sec-desc{ margin-top:6px; }
.partner-row{ display:flex; flex-wrap:wrap; gap:12px; }
.pchip{
  padding:13px 22px; border-radius:12px; font-size:14px; color:var(--dim);
  background:rgba(255,255,255,.035); border:1px solid var(--line);
  transition:transform .3s var(--ease),border-color .3s,color .3s;
}
.pchip:hover{ transform:translateY(-3px); border-color:var(--line-2); color:var(--text); }
.pchip.lead{
  font-family:var(--f-en); font-weight:600; color:#04121F; background:var(--grad); border-color:transparent;
  box-shadow:0 6px 24px rgba(59,130,246,.24);
}

/* ============ PROCESS ============ */
.steps{ display:grid; grid-template-columns:repeat(auto-fit,minmax(155px,1fr)); gap:clamp(12px,1.4vw,18px); }
.step{
  position:relative; padding:26px 20px; border-radius:14px; text-align:center;
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));
  border:1px solid var(--line);
  transition:transform .4s var(--ease),border-color .3s,background .3s;
}
.step:hover{ transform:translateY(-5px); border-color:rgba(163,230,53,.4); }
.s-num{
  display:grid; place-items:center; width:34px; height:34px; margin:0 auto 14px;
  border-radius:50%; font-size:13.5px; font-weight:700;
  color:var(--cyan); background:rgba(124,231,255,.09); border:1px solid rgba(124,231,255,.25);
  transition:background .3s,color .3s,border-color .3s;
}
.step:hover .s-num{ background:var(--grad); color:#04121F; border-color:transparent; }
.s-txt{ font-size:14.5px; font-weight:600; }

/* ============ FAQ ============ */
.faq-list{ border-top:1px solid var(--line); }
.faq{ border-bottom:1px solid var(--line); }
.faq-q{
  width:100%; display:flex; align-items:center; justify-content:space-between; gap:20px;
  padding:24px 4px; text-align:left; font-size:clamp(15.5px,1.7vw,18px); font-weight:600;
  transition:color .25s; line-height:1.5;
}
.faq-q:hover{ color:var(--cyan); }
.faq-q i{
  position:relative; flex-shrink:0; width:26px; height:26px; border-radius:50%;
  border:1px solid var(--line-2); transition:background .3s,border-color .3s,transform .35s var(--ease);
}
.faq-q i::before,.faq-q i::after{
  content:''; position:absolute; top:50%; left:50%; background:currentColor;
  transform:translate(-50%,-50%); transition:transform .35s var(--ease),opacity .3s;
}
.faq-q i::before{ width:11px; height:1.5px; }
.faq-q i::after{ width:1.5px; height:11px; }
.faq.open .faq-q{ color:var(--cyan); }
.faq.open .faq-q i{ background:rgba(124,231,255,.12); border-color:rgba(124,231,255,.45); transform:rotate(180deg); }
.faq.open .faq-q i::after{ transform:translate(-50%,-50%) scaleY(0); opacity:0; }
.faq-a{ overflow:hidden; height:0; transition:height .42s var(--ease); }
.faq-a p{ padding:0 44px 24px 4px; font-size:14.5px; color:var(--dim); line-height:1.85; }

/* ============ CONTACT ============ */
.contact{
  position:relative; padding:clamp(84px,10vw,140px) 0; overflow:hidden; isolation:isolate;
  background:var(--void);
}
.contact-media{ position:absolute; inset:0; z-index:-3; }
.contact-media img{ width:100%; height:100%; object-fit:cover; filter:saturate(.4) brightness(.3) contrast(1.1); }
.contact-duotone{
  position:absolute; inset:0;
  background:linear-gradient(120deg,rgba(4,7,15,.96) 0%,rgba(6,20,54,.88) 45%,rgba(4,7,15,.93) 100%);
}
.aurora-c{ z-index:-2; }
.aurora-c .a1{ width:38vw; height:38vw; background:#1E40AF; top:-18%; left:-10%; opacity:.34; }
.aurora-c .a2{ width:26vw; height:26vw; background:#4D7C0F; bottom:-14%; right:-6%; opacity:.26; }

.contact-inner{ position:relative; z-index:2; display:grid; grid-template-columns:1.15fr .85fr; gap:clamp(28px,4vw,64px); align-items:start; }
@media(max-width:960px){ .contact-inner{ grid-template-columns:1fr; } }
.contact h2{ margin-top:6px; }
.contact .lead{ margin-top:22px; font-size:clamp(15px,1.6vw,17.5px); color:var(--dim); line-height:1.82; max-width:56ch; }
.contact-actions{ display:flex; flex-wrap:wrap; gap:14px; margin-top:32px; }
.social-row{ display:flex; flex-wrap:wrap; gap:10px; margin-top:32px; }
.social{
  font-size:12px; letter-spacing:.08em; padding:8px 16px; border-radius:100px;
  border:1px solid var(--line); color:var(--dim); transition:border-color .3s,color .3s,transform .3s var(--ease);
}
.social:not(.off):hover{ border-color:rgba(124,231,255,.5); color:var(--cyan); transform:translateY(-2px); }
.social.off{ opacity:.4; }

.contact-card{
  border-radius:var(--r); overflow:hidden;
  background:linear-gradient(170deg,rgba(255,255,255,.08),rgba(255,255,255,.025));
  border:1px solid var(--line-2);
  backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px);
  box-shadow:0 30px 70px rgba(0,0,0,.55);
}
.cc-head{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 22px; border-bottom:1px solid var(--line);
  font-size:10.5px; letter-spacing:.24em; color:var(--faint);
}
.cc-row{ display:flex; align-items:center; justify-content:space-between; gap:18px; padding:20px 22px; border-bottom:1px solid var(--line); }
.cc-row:last-child{ border-bottom:0; }
.cc-k{ font-size:9.5px; letter-spacing:.2em; color:var(--faint); margin-bottom:6px; }
.cc-v{ font-size:15px; font-weight:600; letter-spacing:-.005em; word-break:break-word; }
.cc-sub{ font-size:12px; color:var(--faint); margin-top:4px; }
.cc-qr-img{ width:88px; height:88px; border-radius:10px; object-fit:cover; border:1px solid var(--line-2); flex-shrink:0; background:#fff; }
.cc-link{ transition:background .3s; }
.cc-link:hover{ background:rgba(124,231,255,.06); }
.cc-link svg{ width:17px; height:17px; color:var(--faint); flex-shrink:0; transition:color .3s,transform .3s var(--ease); }
.cc-link:hover svg{ color:var(--cyan); transform:translate(2px,-2px); }

/* ============ FOOTER ============ */
footer{ background:var(--void); border-top:1px solid var(--line); padding:34px 0; }
.footer-inner{ display:flex; align-items:center; justify-content:space-between; gap:20px; flex-wrap:wrap; }
.f-brand{ display:flex; align-items:center; gap:12px; }
.f-brand img{ width:26px; height:26px; object-fit:contain; opacity:.8; }
.f-cn{ font-size:13.5px; font-weight:600; }
.f-en{ font-size:11px; color:var(--faint); letter-spacing:.06em; margin-top:2px; }
.f-right{ font-size:11.5px; color:var(--faint); letter-spacing:.05em; }

/* ============ FLOAT CTA ============ */
.float-cta{
  position:fixed; right:20px; bottom:20px; z-index:700;
  display:inline-flex; align-items:center; gap:9px;
  padding:13px 20px; border-radius:100px; font-size:14px; font-weight:700;
  background:var(--grad); color:#04121F;
  box-shadow:0 10px 34px rgba(59,130,246,.42);
  opacity:0; visibility:hidden; transform:translateY(16px) scale(.94);
  transition:opacity .4s var(--ease),transform .4s var(--ease),visibility .4s;
}
.float-cta.show{ opacity:1; visibility:visible; transform:none; }
.float-cta svg{ width:17px; height:17px; }

/* ============ RESPONSIVE ============ */
@media(max-width:1180px){
  .nav-links{ gap:0; }
  .nav-links a{ padding:8px 10px; font-size:14px; }
}
@media(max-width:1023px){
  :root{ --nav-h:76px; }
  .nav-links{ display:none; }
  .nav-toggle{ display:flex; }
  .nav-cta{ display:none; }
  .brand-mark{ width:48px; height:48px; }
  .brand-mark img{ width:31px; height:31px; }
  .brand-cn{ font-size:18px; }
  .brand-en{ font-size:10.5px; }
  .hero-stats{ grid-template-columns:repeat(2,1fr); gap:22px; }
}
@media(max-width:760px){
  /* one bento card per row — half-width cards get too cramped for CJK */
  .bento{ grid-template-columns:1fr; }
  .bcard,.bcard-wide{ grid-column:1 / -1; }
  .brand-en{ display:none; }
  .brand-cn{ font-size:16px; letter-spacing:0; }
  .brand{ gap:11px; }
  .brand-mark{ width:42px; height:42px; border-radius:12px; }
  .brand-mark img{ width:27px; height:27px; }
  nav{ gap:10px; }
  .nav-right{ gap:8px; }
  .lang-switch{ padding:2px; }
  .lang-switch button{ padding:4px 8px; font-size:11px; white-space:nowrap; }
  .lang-pill{ top:2px; left:2px; height:calc(100% - 4px); }
  .nav-toggle{ width:34px; height:34px; border-radius:10px; }
}
@media(max-width:560px){
  .hero-eyebrow .sep,.hero-eyebrow .en{ display:none; }
  .hero-eyebrow{ font-size:10.5px; }
}
@media(max-width:640px){
  body{ font-size:15.5px; }
  .hero{ min-height:92svh; padding-top:calc(var(--nav-h) + 40px); }
  .hero-title{ font-size:clamp(2.2rem,10vw,3.2rem); max-width:100%; }
  .hero-eyebrow{ font-size:10px; gap:8px; padding:7px 14px 7px 11px; }
  .hero-actions .btn{ flex:1 1 100%; }
  .hero-scroll{ display:none; }
  .bcard-body{ margin-top:-34px; }
  .aud-item{ gap:14px; }
  .cc-qr-img{ width:74px; height:74px; }
  .cc-row{ padding:17px 18px; }
  .faq-a p{ padding-right:8px; }
  .float-cta{ right:14px; bottom:14px; padding:12px 18px; font-size:13px; }
  .footer-inner{ flex-direction:column; align-items:flex-start; }
  .area-bar{ height:52px; }
  .area-bar .seg b{ font-size:9.5px; }
  .seg.s3 b,.seg.s4 b{ display:none; }
}
@media(max-width:400px){
  .area-bar .seg b{ display:none; }
}