/**
 * =========================================================
 * Starcore-Constants · V0.1
 * 星核结构常数 · 结构层（Structural Layer）
 * =========================================================
 *
 * 源页面：569-VWEB-SDGH-HOME-🎬ShotDirect官网首页-V1.9-20260328.html
 * 目标：CSS 双层分离 — 本文件只承载布局、网格、间距、定位
 * 视觉（颜色、字体、阴影、动画）在 Universe-Constants 中
 *
 * VXTS-20260329
 * =========================================================
 */

/* ===== 现实层安全重置（Reality Safety Reset） ===== */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0;min-height:100vh}
body{display:contents}

/* ===== 宇宙容器（Universe Container · RULE-05） ===== */
universe{
  display:block;
  min-height:100vh;
  overflow-x:hidden;
}

/* ===== Utilities ===== */
.container{max-width:960px;margin:0 auto;padding:0 28px}
section{padding:100px 0}
@media(max-width:600px){section{padding:64px 0}.container{padding:0 20px}}

/* ===== Scroll Animation (structure only) ===== */
.reveal{opacity:0;transform:translateY(32px);transition:opacity 0.7s ease,transform 0.7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ===== NAV ===== */
nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:0 28px;
  transform:translateY(-100%);opacity:0;
  transition:transform 0.4s ease,opacity 0.4s ease;
  pointer-events:none;
}
nav.visible{transform:translateY(0);opacity:1;pointer-events:auto}
nav .nav-inner{
  max-width:960px;margin:0 auto;display:flex;
  align-items:center;justify-content:space-between;height:64px;
}

/* ===== HERO ===== */
.hero{
  position:relative;
  min-height:100vh;
  height:100vh;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
}

/* 视频层 */
.hero-video-bg{
  position:absolute;top:0;left:0;
  width:100vw;height:100vh;
  z-index:0;
}
.hero-video-bg video{
  position:absolute;top:0;left:0;
  width:100vw;height:100vh;
  object-fit:cover;
  opacity:0;visibility:hidden;z-index:0;
  pointer-events:none;
}
.hero-video-bg video.active{opacity:1;visibility:visible;z-index:2}

/* Intro 监视器层 */
.hero-intro{
  position:absolute;inset:0;z-index:4;
  display:flex;align-items:center;justify-content:center;
  text-align:center;
  padding:24px;overflow:hidden;
}
.hero-intro.hidden{display:none}
.hero-intro .hero-content{z-index:5}

/* 四角取景标记 */
.hero-intro-corners{position:absolute;inset:16px;z-index:6;pointer-events:none}
.hero-intro-corners i{
  position:absolute;width:24px;height:24px;
  border-style:solid;border-width:0;font-style:normal;
}
.hero-intro-corners i:nth-child(1){top:0;left:0;border-top-width:2.5px;border-left-width:2.5px}
.hero-intro-corners i:nth-child(2){top:0;right:0;border-top-width:2.5px;border-right-width:2.5px}
.hero-intro-corners i:nth-child(3){bottom:0;left:0;border-bottom-width:2.5px;border-left-width:2.5px}
.hero-intro-corners i:nth-child(4){bottom:0;right:0;border-bottom-width:2.5px;border-right-width:2.5px}

/* HUD 布局 */
.hero-intro-hud{
  position:absolute;inset:26px 32px auto 32px;z-index:5;
  display:flex;justify-content:space-between;align-items:center;
}
.hero-intro-label,.hero-intro-status{display:flex;align-items:center;gap:10px}
.hero-intro-rec-badge{display:flex;align-items:center;gap:7px;padding:3px 10px 3px 8px;border-radius:4px}
.hero-intro-rec{width:8px;height:8px;border-radius:50%}

.hero-intro-meta{
  position:absolute;inset:auto 32px 120px 32px;z-index:5;
  display:flex;justify-content:space-between;align-items:center;
}

/* Timeline */
.hero-intro-timeline{position:absolute;left:28px;right:28px;bottom:36px;z-index:5;display:grid;gap:14px}
.hero-intro-track{position:relative;height:4px;overflow:hidden}
.hero-intro-segments{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.hero-intro-segment{min-height:44px;padding:10px 12px;display:grid;gap:6px;align-content:start}

/* Hero 内容层 */
.hero-content{position:relative;z-index:1}
.hero::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%}

.scroll-hint{position:absolute;bottom:40px;left:50%;transform:translateX(-50%)}

/* ===== SHOWCASE ===== */
.showcase{padding:80px 0}
.showcase .container{max-width:960px;margin:0 auto;padding:0 28px}
.showcase-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.showcase-item{border-radius:12px;overflow:hidden;transition:all 0.3s}
.showcase-video{aspect-ratio:16/9;position:relative;overflow:hidden}
.video-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center}
.showcase-meta{padding:16px 20px}
.showcase-more{text-align:center;margin-top:48px}

/* ===== BUTTONS ===== */
.btn-primary{
  display:inline-flex;align-items:center;gap:8px;
  padding:18px 40px;border-radius:12px;
  border:none;cursor:pointer;transition:all 0.3s;text-decoration:none;
}

/* ===== PAIN ===== */
.pain-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:600px){.pain-grid{grid-template-columns:1fr}}
.pain-item{display:flex;align-items:flex-start;gap:16px;padding:24px;border-radius:12px}
.pain-icon{
  flex-shrink:0;width:36px;height:36px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
}
.insight-card{margin-top:48px;padding:40px;border-radius:16px;text-align:center}

/* ===== WHAT ===== */
.what-content{max-width:640px}
.what-quote{position:relative;padding-left:24px;margin:40px 0}

/* ===== CAPABILITIES ===== */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:700px){.cap-grid{grid-template-columns:1fr}}
.cap-card{padding:40px 28px;border-radius:16px;position:relative;overflow:hidden;transition:all 0.4s}
.cap-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;transform:scaleX(0);transition:transform 0.4s;transform-origin:left}
.cap-card:hover{transform:translateY(-4px)}
.cap-card:hover::before{transform:scaleX(1)}

/* ===== COMPARE ===== */
.compare-grid{
  display:grid;grid-template-columns:1fr auto 1fr;gap:0;align-items:stretch;
  border-radius:20px;overflow:hidden;
}
@media(max-width:700px){
  .compare-grid{grid-template-columns:1fr}
  .compare-arrow{display:block;text-align:center;padding:0 !important;margin:1px 0}
}
.compare-box{padding:40px 32px;line-height:2.2}
.compare-label{display:inline-block;padding:4px 14px;border-radius:6px;margin-bottom:20px}
.compare-bottom{margin-top:40px;text-align:center}
.compare-bottom strong{position:relative}
.compare-bottom strong::after{content:'';position:absolute;bottom:-2px;left:0;right:0;height:3px;border-radius:2px}

/* ===== LITE PRODUCT ===== */
.lite-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
@media(max-width:700px){.lite-layout{grid-template-columns:1fr}}
.lite-features{list-style:none}
.lite-features li{padding:14px 0;display:flex;align-items:center;gap:14px}
.lite-features li .check{
  width:24px;height:24px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.lite-card-visual{border-radius:20px;padding:48px 36px;text-align:center;position:relative;overflow:hidden}
.lite-card-visual::before{
  content:'';position:absolute;top:-60px;right:-60px;width:200px;height:200px;border-radius:50%;
}
.lite-card-visual .price-tag,.lite-card-visual .price,.lite-card-visual .price-note,.lite-card-visual .btn-lite{position:relative}
.lite-card-visual .btn-lite{
  display:inline-block;width:100%;padding:16px 0;border-radius:12px;
  border:none;cursor:pointer;transition:all 0.3s;text-decoration:none;
}
.lite-card-visual .btn-lite:hover{transform:scale(1.03)}

/* ===== ROADMAP ===== */
.road-steps{display:flex;gap:24px;position:relative}
@media(max-width:600px){.road-steps{flex-direction:column}}
.road-step{flex:1;padding:32px 24px;border-radius:16px;position:relative;transition:all 0.3s}
.road-step:hover{transform:translateY(-4px)}
.road-step.active::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;border-radius:3px 3px 0 0}

/* ===== CTA ===== */
.cta{text-align:center;padding:120px 0;position:relative;overflow:hidden}
.cta::before{
  content:'';position:absolute;top:50%;left:50%;width:800px;height:800px;
  transform:translate(-50%,-50%);border-radius:50%;
}
.cta h2,.cta p,.cta .btn-primary{position:relative}
.cta .btn-primary{padding:20px 56px;border-radius:14px}

/* ===== CLOSING ===== */
.closing{text-align:center;padding:100px 0 60px}

/* ===== FOOTER ===== */
footer{text-align:center;padding:36px 0}

/* ===== JUMP MANIFEST ===== */
.jump-manifest{
  display:flex;gap:0;justify-content:center;align-items:center;
  max-width:960px;margin:0 auto;padding:20px 28px;
}
.jump-layer{
  display:flex;align-items:center;gap:6px;
  padding:0 20px;
}
.jump-layer+.jump-layer{border-left:1px solid rgba(0,0,0,0.08)}
.showcase-video{
  position:relative;
}

.sound-toggle{
  position:absolute;
  bottom:10px;
  right:10px;

  background:rgba(0,0,0,0.5);
  color:#fff;
  border:none;

  border-radius:6px;
  padding:6px 8px;
  cursor:pointer;
}

.showcase-video video{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}

.showcase-video{
  border-radius:12px;
}