/* ═══════════════════════════════════════════════════════
   T89 虚拟商店 · 沉浸式产品展厅（Loops Virtual Store 风格）
   原创样式：轨道环绕 / 多行无缝循环产品流 / 透视虚拟走道
   全部视觉由 CSS+SVG 生成，无外部图片/字体依赖，可商用
   ═══════════════════════════════════════════════════════ */

:root{
  --bg:#070b16;
  --ink:#e8ecff;
  --ink-2:rgba(232,236,255,.66);
  --ink-3:rgba(232,236,255,.42);
  --line:rgba(232,236,255,.12);
  --line-s:rgba(232,236,255,.2);
  --c1:#2bd1ff;          /* 极光青 */
  --c2:#7b5cff;          /* 极光紫 */
  --c3:#ff5cc8;          /* 点缀粉 */
  --glass:rgba(255,255,255,.055);
  --glass-bd:rgba(255,255,255,.12);
  --f:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --m:"SF Mono",ui-monospace,"Cascadia Mono",Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
  --step:clamp(54px,6.2vw,88px);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--f);color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;line-height:1.6;overflow-x:hidden;
}
.defs{position:absolute;width:0;height:0;overflow:hidden}
.wrap{width:min(1160px,92vw);margin:0 auto}
a{color:inherit;text-decoration:none}
h1,h2,h3{line-height:1.12;margin:0;font-weight:800;letter-spacing:-.01em}
p{margin:0}
.grad{background:linear-gradient(100deg,var(--c1),var(--c2) 55%,var(--c3));-webkit-background-clip:text;background-clip:text;color:transparent}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font:600 12px/1 var(--m);letter-spacing:.14em;color:var(--c1);text-transform:uppercase;margin:0 0 16px}
.eyebrow i{width:22px;height:2px;background:linear-gradient(90deg,var(--c1),transparent);border-radius:2px}
.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 22px;border-radius:999px;font-weight:700;font-size:15px;transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s}
.btn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .25s var(--ease)}
.btn:hover{transform:translateY(-2px)}
.btn:hover svg{transform:translateX(3px)}
.btn-p{background:linear-gradient(100deg,var(--c1),var(--c2));color:#06121f;box-shadow:0 10px 30px rgba(43,209,255,.28)}
.btn-g{background:var(--glass);border:1px solid var(--glass-bd);color:var(--ink)}

/* ── 背景：极光 + 流动光廊 + 透视走道 ── */
.bg{position:fixed;inset:0;z-index:-2;overflow:hidden;background:
  radial-gradient(120% 120% at 50% -10%,#0d1430 0%,#070b16 55%,#04060d 100%)}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;mix-blend-mode:screen;will-change:transform}
.b1{width:62vmax;height:62vmax;left:-18vmax;top:-20vmax;background:radial-gradient(circle,var(--c1),transparent 62%);animation:drift1 24s ease-in-out infinite}
.b2{width:54vmax;height:54vmax;right:-16vmax;bottom:-18vmax;background:radial-gradient(circle,var(--c2),transparent 62%);animation:drift2 30s ease-in-out infinite}
.b3{width:40vmax;height:40vmax;left:30vmax;top:20vmax;background:radial-gradient(circle,var(--c3),transparent 62%);opacity:.4;animation:drift3 36s ease-in-out infinite}
@keyframes drift1{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(22vmax,12vmax) scale(1.18)}}
@keyframes drift2{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-18vmax,-10vmax) scale(1.22)}}
@keyframes drift3{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-12vmax,16vmax) scale(.85)}}
/* 流动光廊：横向无限流动的光带，营造虚拟通道 */
.corridor{position:absolute;top:34%;left:0;width:100%;height:3px;background:linear-gradient(90deg,transparent,var(--c1) 25%,var(--c2) 50%,var(--c3) 75%,transparent);filter:blur(3px);opacity:.45;animation:flow 9s linear infinite}
.corridor.b{top:62%;animation-duration:13s;animation-direction:reverse;opacity:.3}
@keyframes flow{from{transform:translateX(-40%)}to{transform:translateX(40%)}}
/* 透视网格走道（hero 内，营造虚拟空间纵深） */
.floor{position:absolute;bottom:-12%;left:-50%;width:200%;height:58%;
  background-image:linear-gradient(rgba(43,209,255,.22) 1px,transparent 1px),linear-gradient(90deg,rgba(43,209,255,.22) 1px,transparent 1px);
  background-size:46px 46px;transform:perspective(360px) rotateX(74deg);transform-origin:bottom center;
  -webkit-mask-image:linear-gradient(transparent,#000 72%);mask-image:linear-gradient(transparent,#000 72%);
  opacity:.5;animation:floormove 5s linear infinite;z-index:0}
@keyframes floormove{from{background-position:0 0}to{background-position:0 46px}}

/* ── 顶栏 ── */
.hd{position:sticky;top:0;z-index:40;backdrop-filter:blur(14px);background:rgba(7,11,22,.55);border-bottom:1px solid var(--line)}
.hd-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800}
.brand i{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--c1),var(--c2));box-shadow:0 0 16px rgba(43,209,255,.5)}
.brand span{display:flex;flex-direction:column;line-height:1}
.brand em{font:600 9px/1 var(--m);letter-spacing:.18em;color:var(--ink-3);margin-top:3px}
.nav{display:flex;gap:26px;font-size:14px;font-weight:600;color:var(--ink-2)}
.nav a{transition:color .2s}
.nav a:hover,.nav a.on{color:var(--ink)}
.hd-cta{padding:9px 18px;border-radius:999px;background:var(--glass);border:1px solid var(--glass-bd);font-weight:700;font-size:14px;transition:.25s}
.hd-cta:hover{background:linear-gradient(100deg,var(--c1),var(--c2));color:#06121f}

/* ── 首屏：轨道环绕 ── */
.hero{position:relative;padding:clamp(56px,8vw,108px) 0 clamp(36px,5vw,72px)}
.hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.hero-tx h1{font-size:clamp(38px,5.4vw,66px);margin-bottom:22px}
.lede{color:var(--ink-2);font-size:clamp(15px,1.5vw,18px);max-width:46ch;margin-bottom:30px}
.h-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:22px}
.h-note{display:flex;gap:10px;flex-wrap:wrap}
.h-note span{font-size:12.5px;color:var(--ink-3);border:1px solid var(--line);padding:5px 12px;border-radius:999px;background:var(--glass)}

/* 轨道舞台 */
.hero-3d{display:flex;justify-content:center;align-items:center;min-height:360px;position:relative}
.orbit{position:relative;width:340px;height:340px;border-radius:50%;display:grid;place-items:center}
.core{width:56px;height:56px;border-radius:50%;background:radial-gradient(circle,var(--c1),var(--c2));box-shadow:0 0 46px var(--c1),0 0 90px rgba(123,92,255,.5);animation:corepulse 3.4s ease-in-out infinite;z-index:3}
@keyframes corepulse{0%,100%{transform:scale(1);opacity:.95}50%{transform:scale(1.12);opacity:1}}
.orbiter{position:absolute;inset:0;animation:spin 28s linear infinite}
.pos{position:absolute;top:50%;left:50%;width:0;height:0}
.p1{transform:rotate(0deg) translateY(-152px)}
.p2{transform:rotate(90deg) translateY(-152px)}
.p3{transform:rotate(180deg) translateY(-152px)}
.p4{transform:rotate(270deg) translateY(-152px)}
.sat{position:absolute;left:0;top:0;width:80px;height:80px;margin:-40px;display:grid;place-items:center;border-radius:18px;
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.02));border:1px solid var(--glass-bd);
  backdrop-filter:blur(8px);box-shadow:0 10px 30px rgba(0,0,0,.35);animation:spin 28s linear infinite reverse}
.sat svg{width:62%;height:62%;filter:drop-shadow(0 6px 14px rgba(123,92,255,.5))}
.ring{position:absolute;border-radius:50%;border:1px dashed var(--glass-bd)}
.r1{inset:0;border-color:rgba(43,209,255,.28);animation:spin 34s linear infinite}
.r2{inset:54px;border-color:rgba(123,92,255,.32);animation:spin 24s linear infinite reverse}
.r3{inset:108px;border-color:rgba(255,92,200,.26);animation:spin 18s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ── 滚动词条 ── */
.marq{overflow:hidden;border-block:1px solid var(--line);background:rgba(255,255,255,.03);padding:14px 0;position:relative;z-index:2}
.marq-in{display:flex;gap:42px;white-space:nowrap;width:max-content;animation:scrollx 26s linear infinite}
.marq-in b{font:700 14px/1 var(--m);letter-spacing:.1em;color:var(--ink-3);text-transform:uppercase}
@keyframes scrollx{to{transform:translateX(-50%)}}

/* ── 区块通用 ── */
.sec{padding:clamp(54px,7vw,92px) 0}
.sec.dark{background:rgba(255,255,255,.025);border-block:1px solid var(--line)}
.sec-hd{max-width:680px;margin-bottom:44px}
.sec-hd h2{font-size:clamp(28px,3.6vw,44px);margin-bottom:16px}
.sec-hd p{color:var(--ink-2);font-size:16px}

/* ── LOOPS 循环产品流（灵魂区） ── */
.loops{position:relative;overflow:hidden;padding:clamp(54px,7vw,92px) 0}
.loops>.floor{bottom:auto;top:18%;opacity:.32;z-index:0}
.loops .sec-hd{position:relative;z-index:2}
.tracks{display:flex;flex-direction:column;gap:22px;position:relative;z-index:2;padding:6px 0}
.track{display:flex;width:max-content;will-change:transform}
.track:hover{animation-play-state:paused}
.looprow{display:flex;gap:22px;padding-right:22px}
.t1{animation:loopx 38s linear infinite}
.t2{animation:loopx 48s linear infinite reverse}
.t3{animation:loopx 42s linear infinite}
@keyframes loopx{to{transform:translateX(-50%)}}
.lcard{position:relative;width:206px;flex:0 0 auto;border-radius:20px;overflow:hidden;
  border:1px solid var(--glass-bd);background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(10px);padding:18px 16px 14px;
  transform:perspective(700px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));
  transition:box-shadow .3s var(--ease),border-color .3s,transform .15s ease-out}
.lcard:hover{box-shadow:0 22px 46px rgba(43,209,255,.24);border-color:rgba(43,209,255,.55);z-index:5}
.lpic{height:108px;display:grid;place-items:center;margin-bottom:12px}
.lpic svg{width:94px;height:94px;filter:drop-shadow(0 8px 18px rgba(123,92,255,.4))}
.lb{display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.lb h3{font-size:16px;font-weight:700}
.price{font:800 15px/1 var(--m);color:var(--c1);white-space:nowrap}

/* ── 单品聚焦 ── */
.spot-in{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center}
.spot-3d{display:flex;justify-content:center}
.turntable{position:relative;width:320px;height:320px;display:grid;place-items:center;border-radius:24px;border:1px solid var(--glass-bd);background:radial-gradient(circle at 50% 40%,rgba(43,209,255,.12),transparent 60%);--spin:0deg;transform:rotateY(var(--spin));transition:transform .25s var(--ease);perspective:900px}
.turntable svg{width:78%;height:78%;filter:drop-shadow(0 18px 36px rgba(123,92,255,.4))}
.turntable .turn{transform-origin:120px 120px;animation:auto 16s linear infinite}
@keyframes auto{from{transform:rotateY(0)}to{transform:rotateY(360deg)}}
.hot{position:absolute;width:12px;height:12px;border-radius:50%;background:var(--c3);box-shadow:0 0 0 0 rgba(255,92,200,.6);animation:pulse 2.4s ease-out infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,92,200,.55)}70%{box-shadow:0 0 0 16px rgba(255,92,200,0)}100%{box-shadow:0 0 0 0 rgba(255,92,200,0)}}
.h1{top:24%;left:30%}.h2{top:54%;right:26%}.h3{bottom:22%;left:44%}
.spot-tx h2{font-size:clamp(26px,3.4vw,42px);margin-bottom:16px}
.spot-tx>p{color:var(--ink-2);margin-bottom:22px}
.feat-list{list-style:none;padding:0;margin:0 0 26px;display:grid;gap:12px}
.feat-list li{position:relative;padding-left:26px;color:var(--ink-2);font-size:15px}
.feat-list li::before{content:"";position:absolute;left:0;top:8px;width:10px;height:10px;border-radius:3px;background:linear-gradient(135deg,var(--c1),var(--c2))}
.feat-list b{color:var(--ink)}

/* ── 为什么 ── */
.why-g{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.why-g article{border:1px solid var(--line);border-radius:18px;padding:26px 22px;background:var(--glass);transition:.3s var(--ease)}
.why-g article:hover{transform:translateY(-4px);border-color:var(--glass-bd)}
.why-g .n{font:800 13px/1 var(--m);color:var(--c1);letter-spacing:.1em}
.why-g h3{font-size:19px;margin:14px 0 10px}
.why-g p{color:var(--ink-3);font-size:14px}

/* ── CTA ── */
.cta{padding:clamp(56px,7vw,96px) 0}
.cta-in{display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center;border:1px solid var(--glass-bd);border-radius:28px;padding:clamp(30px,4vw,56px);background:linear-gradient(140deg,rgba(43,209,255,.1),rgba(123,92,255,.08))}
.cta-in h2{font-size:clamp(26px,3.4vw,42px);margin-bottom:14px}
.cta-in>p{color:var(--ink-2);margin-bottom:0}
.cta-btns{display:flex;flex-direction:column;gap:12px}
.cta-btns .btn{justify-content:center}

/* ── 页脚 ── */
.ft{border-top:1px solid var(--line);padding:54px 0 26px;background:rgba(4,6,13,.6)}
.ft-in{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:30px;margin-bottom:34px}
.ft-brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:17px;margin-bottom:12px}
.ft-brand i{width:22px;height:22px;border-radius:7px;background:linear-gradient(135deg,var(--c1),var(--c2))}
.ft p{color:var(--ink-3);font-size:13.5px}
.ft h4{font-size:13px;letter-spacing:.1em;color:var(--ink-2);margin:0 0 14px;text-transform:uppercase}
.ft ul{list-style:none;padding:0;margin:0;display:grid;gap:9px}
.ft li,.ft a{color:var(--ink-3);font-size:13.5px;transition:color .2s}
.ft a:hover{color:var(--c1)}
.ft-btm{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;border-top:1px solid var(--line);padding-top:20px;color:var(--ink-3);font-size:12.5px}

/* ── 移动快捷栏 ── */
.mbar{position:fixed;left:0;right:0;bottom:0;z-index:50;display:none;justify-content:space-around;gap:8px;padding:8px 12px;background:rgba(7,11,22,.92);backdrop-filter:blur(12px);border-top:1px solid var(--line)}
.mbar a{display:flex;align-items:center;gap:6px;flex:1;justify-content:center;padding:10px;border-radius:12px;font-weight:700;font-size:14px}
.mbar svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.mbar .p{background:linear-gradient(100deg,var(--c1),var(--c2));color:#06121f}

/* ── 滚动渐显 ── */
.r{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease) var(--d,0ms),transform .7s var(--ease) var(--d,0ms)}
.r.in{opacity:1;transform:none}

/* ── 响应式 ── */
@media (max-width:980px){
  .hero-in,.spot-in,.cta-in{grid-template-columns:1fr}
  .hero-3d{order:-1;min-height:300px}
  .why-g{grid-template-columns:repeat(2,1fr)}
  .ft-in{grid-template-columns:1fr 1fr}
  .nav{display:none}
}
@media (max-width:560px){
  .why-g{grid-template-columns:1fr 1fr}
  .ft-in{grid-template-columns:1fr}
  .h-cta .btn,.cta-btns .btn{width:100%}
  .mbar{display:flex}
  body{padding-bottom:64px}
  .lcard{width:170px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important}
  .r{opacity:1;transform:none}
}