/* ============================================================
   VIBEFRAME 官网 — style.css
   色板来自概念03 Logo：青蓝 #3ec6e0 → 紫蓝 #7b5cff → 橙红 #ff7a59
   ============================================================ */

/* ---------- reset & tokens ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --c-bg:       #06080f;
  --c-surface:  #0d1120;
  --c-surface2: #141929;
  --c-border:   rgba(255,255,255,.06);
  --c-text:     #d4d8e8;
  --c-text-dim: #6c7388;
  --c-heading:  #eef0f8;
  --c-cyan:     #3ec6e0;
  --c-purple:   #7b5cff;
  --c-coral:    #ff7a59;
  --c-pink:     #c64a8a;
  --grad-brand: linear-gradient(135deg,var(--c-cyan),var(--c-purple),var(--c-coral));
  --grad-card:  linear-gradient(160deg,rgba(62,198,224,.08),rgba(123,92,255,.06),transparent 70%);
  --font-sans:  'Inter','Noto Sans SC',system-ui,-apple-system,sans-serif;
  --font-mono:  ui-monospace,SFMono-Regular,Menlo,monospace;
  --container:  1120px;
  --nav-h:      64px;
  --ease:       cubic-bezier(.4,0,.2,1);
}
html{scroll-behavior:smooth;scroll-padding-top:var(--nav-h)}
body{
  font-family:var(--font-sans);
  background:var(--c-bg);
  color:var(--c-text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul{list-style:none}

/* ---------- container ---------- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- section common ---------- */
.section{padding:120px 0}
.section-header{text-align:center;margin-bottom:64px}
.section-tag{
  display:inline-block;font-size:11px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--c-cyan);font-family:var(--font-mono);margin-bottom:16px;
}
.section-title{
  font-size:clamp(28px,4vw,42px);font-weight:700;color:var(--c-heading);
  line-height:1.25;margin-bottom:16px;
}
.section-subtitle{font-size:16px;color:var(--c-text-dim);max-width:560px;margin:0 auto;line-height:1.8}
.section-subtitle strong{color:var(--c-cyan);font-weight:600}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 32px;border-radius:10px;font-size:15px;font-weight:600;
  transition:all .25s var(--ease);cursor:pointer;border:none;
}
.btn--primary{
  background:var(--grad-brand);color:#fff;
  box-shadow:0 4px 24px rgba(123,92,255,.3);
}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(123,92,255,.45)}
.btn--ghost{
  background:transparent;color:var(--c-text);
  border:1px solid var(--c-border);backdrop-filter:blur(4px);
}
.btn--ghost:hover{border-color:var(--c-cyan);color:var(--c-cyan)}
.btn--full{width:100%;justify-content:center}

/* ---------- nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--nav-h);
  background:rgba(6,8,15,.75);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-border);
  transition:background .3s;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:100%;gap:18px}
.nav-logo{display:flex;align-items:center;gap:10px;min-width:0}
.nav-logo-img{width:32px;height:32px;border-radius:8px}
.nav-wordmark{height:16px;opacity:.9}
.nav-links{display:flex;align-items:center;gap:32px;flex:1;justify-content:center}
.nav-links a{font-size:14px;color:var(--c-text-dim);transition:color .2s}
.nav-links a:hover{color:var(--c-heading)}
.nav-cta{
  padding:8px 20px;border-radius:8px;
  background:rgba(123,92,255,.15);color:var(--c-purple)!important;
  border:1px solid rgba(123,92,255,.3);
}
.nav-cta:hover{background:rgba(123,92,255,.25)}
.lang-toggle{
  background:transparent;color:var(--c-text-dim);
  border:1px solid var(--c-border);border-radius:999px;
  height:36px;min-width:54px;padding:0 14px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:11px;font-family:var(--font-mono);letter-spacing:.08em;
  cursor:pointer;transition:all .2s;flex-shrink:0;
}
.lang-toggle:hover{border-color:rgba(62,198,224,.35);color:var(--c-cyan)}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--c-text);margin:4px 0;transition:.3s}

/* ---------- hero ---------- */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;
  padding:calc(var(--nav-h) + 40px) 24px 80px;overflow:hidden;
}
.hero-bg-grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000 20%,transparent 70%);
}
.hero-glow{position:absolute;border-radius:50%;filter:blur(120px);opacity:.35;pointer-events:none}
.hero-glow--coral{width:500px;height:500px;background:var(--c-coral);top:-10%;right:-5%}
.hero-glow--cyan{width:600px;height:600px;background:var(--c-cyan);bottom:-20%;left:-10%}
.hero-inner{position:relative;text-align:center;z-index:1}
.hero-logo{width:120px;height:120px;margin:0 auto 32px;animation:float 6s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.hero-title{margin-bottom:20px}
.hero-title-zh{
  display:block;font-size:clamp(36px,6vw,64px);font-weight:900;
  letter-spacing:.15em;
  background:var(--grad-brand);-webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-title-en{
  display:block;font-size:clamp(14px,2vw,18px);letter-spacing:.35em;
  color:var(--c-text-dim);margin-top:8px;font-weight:400;
}
.hero-slogan{
  font-family:var(--font-mono);font-size:clamp(11px,1.4vw,13px);letter-spacing:.25em;
  color:var(--c-cyan);margin-bottom:32px;text-transform:uppercase;
}
.hero-desc{font-size:clamp(15px,1.6vw,17px);color:var(--c-text-dim);margin-bottom:48px;line-height:1.8}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.hero-scroll-hint{
  position:absolute;bottom:40px;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:8px;
  font-size:11px;letter-spacing:.2em;color:var(--c-text-dim);
  font-family:var(--font-mono);text-transform:uppercase;
  animation:pulse-down 2.5s ease-in-out infinite;
}
@keyframes pulse-down{
  0%,100%{transform:translateX(-50%) translateY(0);opacity:.6}
  50%{transform:translateX(-50%) translateY(8px);opacity:1}
}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.about-card{
  position:relative;padding:40px 32px;border-radius:16px;
  background:var(--c-surface);border:1px solid var(--c-border);
  transition:all .35s var(--ease);overflow:hidden;
}
.about-card::before{
  content:"";position:absolute;inset:0;background:var(--grad-card);
  opacity:0;transition:opacity .35s;pointer-events:none;
}
.about-card:hover{transform:translateY(-4px);border-color:rgba(123,92,255,.3)}
.about-card:hover::before{opacity:1}
.about-card-icon{
  width:56px;height:56px;border-radius:14px;
  background:linear-gradient(135deg,rgba(62,198,224,.15),rgba(123,92,255,.15));
  display:grid;place-items:center;margin-bottom:24px;
  border:1px solid rgba(255,255,255,.05);
}
.about-card-icon img{width:32px;height:32px;object-fit:contain}
.about-card h3{font-size:22px;font-weight:700;color:var(--c-heading);margin-bottom:8px;position:relative}
.about-card-keywords{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  color:var(--c-cyan);margin-bottom:16px!important;text-transform:uppercase;
}
.about-card p{font-size:14px;color:var(--c-text-dim);line-height:1.75;position:relative}

/* ---------- services ---------- */
.services-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.service-card{
  display:flex;gap:24px;padding:32px;border-radius:14px;
  background:var(--c-surface);border:1px solid var(--c-border);
  transition:all .3s var(--ease);
}
.service-card:hover{transform:translateY(-2px);border-color:rgba(62,198,224,.3);background:var(--c-surface2)}
.service-card-icon{
  flex-shrink:0;width:56px;height:56px;border-radius:12px;
  background:linear-gradient(135deg,rgba(255,122,89,.12),rgba(123,92,255,.12));
  display:grid;place-items:center;border:1px solid rgba(255,255,255,.05);
}
.service-card-icon img{width:32px;height:32px;object-fit:contain}
.service-card h3{font-size:18px;font-weight:600;color:var(--c-heading);margin-bottom:10px}
.service-card p{font-size:14px;color:var(--c-text-dim);line-height:1.7}

/* ---------- work ---------- */
.work-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.work-card{
  position:relative;border-radius:18px;overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-border);
  transition:all .4s var(--ease);
}
.work-card:hover{transform:translateY(-6px);border-color:rgba(123,92,255,.4)}
.work-card-hero{
  position:relative;height:180px;overflow:hidden;
  background:linear-gradient(160deg,#0d1120,#141929);
}
/* Lumora: 球体 + 网格 */
.work-card--lumora .work-card-hero{
  background:radial-gradient(circle at 30% 50%,rgba(62,198,224,.25),transparent 50%),#0a0e1a;
}
.work-card-orb{
  position:absolute;width:140px;height:140px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,#5fd9ea,#7b5cff 60%,#1a1f3a);
  top:50%;left:50%;transform:translate(-50%,-50%);
  box-shadow:0 0 60px rgba(123,92,255,.5),inset 0 0 40px rgba(0,0,0,.3);
  animation:orb-pulse 4s ease-in-out infinite;
}
@keyframes orb-pulse{0%,100%{transform:translate(-50%,-50%) scale(1)}50%{transform:translate(-50%,-50%) scale(1.06)}}
.work-card-grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(62,198,224,.1) 1px,transparent 1px),
    linear-gradient(90deg,rgba(62,198,224,.1) 1px,transparent 1px);
  background-size:32px 32px;
  mask-image:radial-gradient(circle at 50% 100%,#000 0%,transparent 70%);
}
/* Onda: 波浪 */
.work-card--onda .work-card-hero{
  background:linear-gradient(135deg,#0a0e1a,#1a1530);
}
.work-card-wave{
  position:absolute;left:-10%;right:-10%;height:40px;
  background:linear-gradient(90deg,transparent,var(--c-coral),var(--c-pink),var(--c-purple),transparent);
  opacity:.6;filter:blur(2px);
  border-radius:50%;
  top:50%;transform:translateY(-50%);
  animation:wave 6s ease-in-out infinite;
}
.work-card-wave--2{
  top:60%;
  background:linear-gradient(90deg,transparent,var(--c-cyan),var(--c-purple),transparent);
  opacity:.4;animation-delay:-3s;animation-duration:8s;
}
@keyframes wave{
  0%,100%{transform:translateY(-50%) scaleY(1)}
  50%{transform:translateY(-50%) scaleY(2)}
}
/* Aura: 棱镜光斑 */
.work-card--aura .work-card-hero{
  background:linear-gradient(160deg,#0a0e1a,#0d1830);
}
.work-card-prism{
  position:absolute;width:120px;height:120px;border-radius:50%;
  filter:blur(40px);opacity:.6;
  top:30%;left:30%;
  background:var(--c-cyan);
  animation:prism-drift 7s ease-in-out infinite;
}
.work-card-prism--2{background:var(--c-coral);top:50%;left:55%;animation-delay:-2s}
.work-card-prism--3{background:var(--c-purple);top:20%;left:60%;animation-delay:-4s;width:90px;height:90px}
@keyframes prism-drift{
  0%,100%{transform:translate(0,0) scale(1)}
  33%{transform:translate(15px,-10px) scale(1.1)}
  66%{transform:translate(-10px,15px) scale(.95)}
}
.work-card-body{padding:24px 28px 32px}
.work-card-meta{
  display:flex;justify-content:space-between;align-items:center;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--c-text-dim);margin-bottom:14px;text-transform:uppercase;
}
.work-card-label{color:var(--c-cyan)}
.work-card-stack{font-size:10px;opacity:.7;text-align:right}
.work-card-title{
  font-size:26px;font-weight:700;color:var(--c-heading);
  margin-bottom:6px;letter-spacing:.02em;
}
.work-card-tagline{font-size:13px;color:var(--c-purple);margin-bottom:14px;font-weight:500}
.work-card-desc{font-size:13.5px;color:var(--c-text-dim);line-height:1.7;margin-bottom:18px}
.work-card-tags{display:flex;flex-wrap:wrap;gap:6px}
.work-card-tags li{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.05em;
  padding:4px 10px;border-radius:999px;
  background:rgba(255,255,255,.04);color:var(--c-text-dim);
  border:1px solid var(--c-border);
}

/* ---------- advantage ---------- */
.advantage-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}
.advantage-item{position:relative;padding:32px;border-radius:14px;background:var(--c-surface);border:1px solid var(--c-border)}
.advantage-number{
  font-family:var(--font-mono);font-size:48px;font-weight:300;
  background:var(--grad-brand);-webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;line-height:1;margin-bottom:16px;opacity:.85;
}
.advantage-item h3{font-size:20px;font-weight:600;color:var(--c-heading);margin-bottom:10px}
.advantage-item p{font-size:14px;color:var(--c-text-dim);line-height:1.75}

/* ---------- contact ---------- */
.contact{background:linear-gradient(180deg,transparent,rgba(123,92,255,.04),transparent)}
.contact-layout{display:grid;grid-template-columns:1fr 1.4fr;gap:48px;align-items:start}
.contact-info{padding:32px;border-radius:14px;background:var(--c-surface);border:1px solid var(--c-border)}
.contact-info-item{padding:16px 0;border-bottom:1px dashed var(--c-border)}
.contact-info-item:last-of-type{border-bottom:none}
.contact-info-label{
  display:block;font-family:var(--font-mono);font-size:11px;letter-spacing:.15em;
  color:var(--c-text-dim);text-transform:uppercase;margin-bottom:6px;
}
.contact-info-item a{font-size:15px;color:var(--c-heading);transition:color .2s;font-family:var(--font-mono)}
.contact-info-item a:hover{color:var(--c-cyan)}
.contact-slogan{margin-top:24px;padding-top:24px;border-top:1px solid var(--c-border);display:flex;align-items:center;gap:12px}
.contact-logo{width:36px;height:36px;border-radius:8px}
.contact-slogan p{font-family:var(--font-mono);font-size:12px;color:var(--c-text-dim);letter-spacing:.05em}
.contact-form{padding:32px;border-radius:14px;background:var(--c-surface);border:1px solid var(--c-border)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:18px}
.form-group label{
  display:block;font-size:12px;letter-spacing:.1em;color:var(--c-text-dim);
  margin-bottom:8px;text-transform:uppercase;font-family:var(--font-mono);
}
.form-group input,.form-group textarea{
  width:100%;padding:12px 14px;font-size:14px;font-family:var(--font-sans);
  background:var(--c-bg);color:var(--c-heading);
  border:1px solid var(--c-border);border-radius:8px;
  transition:border-color .2s,box-shadow .2s;resize:vertical;
}
.form-group input:focus,.form-group textarea:focus{
  outline:none;border-color:var(--c-purple);
  box-shadow:0 0 0 3px rgba(123,92,255,.15);
}
.form-group input::placeholder,.form-group textarea::placeholder{color:#454a5e}

/* ---------- footer ---------- */
.footer{padding:48px 0 32px;border-top:1px solid var(--c-border);background:var(--c-surface)}
.footer-inner{display:flex;flex-direction:column;align-items:center;gap:24px}
.footer-brand{text-align:center}
.footer-wordmark{height:20px;margin:0 auto 12px;opacity:.85}
.footer-tagline{font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--c-text-dim);text-transform:uppercase}
.footer-bottom{font-size:12px;color:var(--c-text-dim);font-family:var(--font-mono)}

/* ---------- toast ---------- */
.toast{
  position:fixed;bottom:32px;left:50%;transform:translateX(-50%) translateY(80px);
  padding:14px 24px;background:var(--c-surface2);
  border:1px solid var(--c-border);border-radius:10px;
  color:var(--c-heading);font-size:14px;
  box-shadow:0 12px 40px rgba(0,0,0,.5);
  opacity:0;pointer-events:none;
  transition:all .3s var(--ease);z-index:200;
  display:flex;align-items:center;gap:10px;
}
.toast--show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast--success{border-color:rgba(62,198,224,.4)}
.toast-icon{
  width:18px;height:18px;border-radius:50%;
  background:var(--grad-brand);flex-shrink:0;
  display:grid;place-items:center;color:#fff;font-size:11px;font-weight:700;
}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal--in{opacity:1;transform:translateY(0)}

/* ---------- responsive ---------- */
@media (max-width:920px){
  .section{padding:80px 0}
  .nav{height:72px}
  .nav-inner{height:72px;position:relative;gap:10px}
  .nav-logo{min-width:0;gap:0;flex:1}
  .nav-logo-img{width:36px;height:36px}
  .nav-wordmark{display:none}
  .lang-toggle{
    height:34px;min-width:52px;padding:0 12px;
    font-size:11px;letter-spacing:.06em;line-height:1;
  }
  .nav-toggle{display:block;padding:8px;margin:0;flex-shrink:0}
  .nav-links{
    position:absolute;top:100%;left:16px;right:16px;
    flex-direction:column;gap:0;padding:12px 18px;
    background:rgba(6,8,15,.96);backdrop-filter:blur(12px);
    border:1px solid var(--c-border);border-radius:16px;
    box-shadow:0 18px 40px rgba(0,0,0,.35);
    opacity:0;visibility:hidden;pointer-events:none;
    transform:translateY(-12px);
    transition:transform .25s var(--ease),opacity .25s var(--ease),visibility .25s var(--ease);
  }
  .nav-links--open{
    opacity:1;visibility:visible;pointer-events:auto;
    transform:translateY(10px);
  }
  .nav-links li{width:100%;border-bottom:1px solid var(--c-border)}
  .nav-links li:last-child{border-bottom:none}
  .nav-links a{display:block;padding:14px 0;font-size:15px}
  .nav-cta{display:block;margin-top:10px;text-align:center}
  .about-grid,.services-grid,.work-grid,.advantage-grid{grid-template-columns:1fr}
  .contact-layout{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .hero{padding-top:128px}
  .hero-logo{width:96px;height:96px}
  .service-card{flex-direction:column;gap:16px}
}