/* ============================================================
   AIIWHERE shared site styles (multi-page demo)
   Extracted from allwhere.html — tokens / base / buttons / nav /
   drawer / footer / fabs / forms / page-hero. Page-specific CSS
   stays inline in each page.
   ============================================================ */
:root{
  --canvas:#0A0D10; --canvas-2:#14181D; --hairline:#232B31;
  --ink:#F5F7F8; --body:#A7B0B8; --muted:#77828B;
  --voltage:#20E3C0; --voltage-2:#17B89B; --voltage-ink:#03211B;
  --whatsapp:#25D366; --on-image:#FFFFFF;
  --font-display:'Archivo','Arial Narrow',sans-serif;
  --font-ui:'Instrument Sans',system-ui,sans-serif;
  --gutter:clamp(20px,4vw,48px);
  --t:.33s; --ease:cubic-bezier(.5,0,0,.75); --ease-out:cubic-bezier(.16,1,.3,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--canvas);color:var(--body);font-family:var(--font-ui);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
img,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--voltage);outline-offset:3px}
.container{max-width:1200px;margin:0 auto;padding:0 var(--gutter)}
.eyebrow{font-size:12px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--muted)}
.price{font-variant-numeric:tabular-nums}
main{padding-top:68px}

/* ============ BUTTONS ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-size:15px;font-weight:600;line-height:1;padding:16px 32px;min-height:48px;border-radius:9999px;border:0;cursor:pointer;transition:background-color var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease)}
.btn svg{flex:none}
.btn-solid{background:var(--voltage);color:var(--voltage-ink)}
.btn-solid:hover{background:var(--voltage-2)}
.btn-outline{background:transparent;color:var(--ink);border:1px solid rgba(245,247,248,.6)}
.btn-outline:hover{border-color:var(--ink)}
.btn-outline.on-photo{background:rgba(10,13,16,.45);backdrop-filter:blur(6px);border-color:rgba(245,247,248,.65)}
.btn-wa{background:var(--whatsapp);color:#fff}
.btn-wa:hover{background:#1FBF5B}
.btn-sm{padding:12px 24px;min-height:42px;font-size:14px}
.cta-row{display:flex;flex-wrap:wrap;gap:14px}

/* ============ NAV ============ */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 var(--gutter);height:68px;transition:background-color .4s var(--ease)}
.nav.is-scrolled{background:rgba(10,13,16,.86);backdrop-filter:blur(14px)}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-stretch:125%;font-size:17px;letter-spacing:.06em;color:var(--ink);text-transform:uppercase}
.logo svg{flex:none}
.nav-icons{display:flex;align-items:center;gap:8px}
.nav-links{display:flex;gap:26px}
.nav-links a{font-size:14px;font-weight:500;color:var(--body);transition:color var(--t) var(--ease)}
.nav-links a:hover{color:var(--ink)}
.nav-links a.is-here{color:var(--ink)}
.nav-build{display:none;animation:ctaGlow 2.8s ease-in-out infinite}
@media(min-width:641px){.nav-build{display:inline-flex;margin-right:6px}}
@media(max-width:960px){.nav-links{display:none}}
.nbtn{position:relative;width:44px;height:44px;border-radius:9999px;border:0;cursor:pointer;flex:none;display:flex;align-items:center;justify-content:center;background:transparent;color:var(--ink);transition:background-color var(--t) var(--ease)}
.nbtn:hover{background:rgba(245,247,248,.12)}
.cart-badge{position:absolute;top:5px;right:5px;min-width:16px;height:16px;padding:0 4px;border-radius:9999px;background:var(--voltage);color:var(--voltage-ink);font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center;pointer-events:none}
@keyframes ctaGlow{
  0%,100%{box-shadow:0 0 0 0 rgba(32,227,192,0),0 6px 22px rgba(32,227,192,.25)}
  50%{box-shadow:0 0 0 6px rgba(32,227,192,.14),0 8px 32px rgba(32,227,192,.5)}
}

/* ============ DRAWER (mobile menu, designed) ============ */
.drawer{position:fixed;inset:0;z-index:200;background:linear-gradient(165deg,rgba(255,255,255,.16) 0%,rgba(255,255,255,.05) 36%,rgba(255,255,255,0) 60%),linear-gradient(100deg,rgba(18,23,28,.74) 0%,rgba(28,36,44,.52) 55%,rgba(40,52,62,.32) 100%);-webkit-backdrop-filter:blur(24px) saturate(1.45) brightness(1.12);backdrop-filter:blur(24px) saturate(1.45) brightness(1.12);display:flex;flex-direction:column;padding:0 var(--gutter);transform:translateX(100%);transition:transform .45s var(--ease-out);visibility:hidden;overflow:hidden}
.drawer.is-open{transform:translateX(0);visibility:visible}
/* 左缘电压缝线流光（keyframes 不进 rm 块） */
.drawer::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;z-index:3;background:linear-gradient(to bottom,transparent,var(--voltage) 18%,var(--voltage-2) 38%,transparent 56%,var(--voltage) 78%,transparent);background-size:100% 260%;animation:seamFlow 3.4s linear infinite;opacity:.9}
@keyframes seamFlow{from{background-position:0 0}to{background-position:0 110%}}
/* 底层骑手影像：慢速 Ken Burns + 对角遮罩融入画布 */
.drawer-bg{position:absolute;right:-10%;bottom:-4%;width:min(80%,470px);aspect-ratio:3/4;pointer-events:none;opacity:.22;z-index:0;-webkit-mask-image:linear-gradient(315deg,#000 16%,transparent 66%);mask-image:linear-gradient(315deg,#000 16%,transparent 66%)}
.drawer-bg img{width:100%;height:100%;object-fit:cover;animation:drawerKen 16s ease-in-out infinite alternate}
@keyframes drawerKen{from{transform:scale(1.02)}to{transform:scale(1.14) translate(-2%,2%)}}
/* 巨型描边水印 */
.drawer-word{position:absolute;left:-3px;bottom:82px;z-index:0;font-family:var(--font-display);font-weight:700;font-stretch:125%;font-size:clamp(88px,23vw,185px);line-height:.8;letter-spacing:.02em;text-transform:uppercase;color:transparent;-webkit-text-stroke:1.5px rgba(245,247,248,.07);pointer-events:none;white-space:nowrap}
.drawer-head{height:68px;display:flex;align-items:center;justify-content:space-between;flex:none;position:relative;z-index:2}
.drawer-title{flex:none;display:flex;align-items:center;gap:10px;font-size:12px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.drawer-title::before{content:"";width:18px;height:2px;background:var(--voltage)}
/* 链接：编号 + 大字 + 箭头，错峰侧面冲入（transition 驱动，rm 不关闭） */
.drawer-links{flex:1;display:flex;flex-direction:column;justify-content:center;counter-reset:dl;position:relative;z-index:2}
.drawer-links a{display:flex;align-items:baseline;gap:14px;font-family:var(--font-display);font-weight:700;font-stretch:125%;text-transform:uppercase;font-size:clamp(22px,5.6vw,44px);line-height:1.15;color:var(--ink);padding:17px 0;opacity:0;transform:translateX(40px) skewX(-6deg);transition:color var(--t) var(--ease),opacity .5s var(--ease-out),transform .55s var(--ease-out);text-shadow:0 1px 10px rgba(10,13,16,.55)}
.drawer-links a::before{counter-increment:dl;content:"0" counter(dl);font-family:var(--font-ui);font-size:12px;font-weight:600;letter-spacing:.2em;color:var(--voltage);flex:none}
.drawer-links a{position:relative}
.drawer-links a::after{content:"→";position:absolute;right:0;top:50%;font-size:.5em;color:var(--voltage);opacity:0;transform:translateY(-50%) translateX(-12px);transition:opacity var(--t) var(--ease),transform var(--t) var(--ease)}
.drawer-links a:hover,.drawer-links a:focus-visible{color:var(--voltage);background:linear-gradient(90deg,rgba(32,227,192,.09),transparent 72%)}
.drawer-links a:hover::after,.drawer-links a:focus-visible::after{opacity:1;transform:translateY(-50%)}
.drawer.is-open .drawer-links a:active{color:var(--voltage);transform:translateX(8px);transition:color .12s var(--ease),transform .12s var(--ease)}
.drawer.is-open .drawer-links a{opacity:1;transform:none}
.drawer.is-open .drawer-links a:nth-child(1){transition-delay:.08s}
.drawer.is-open .drawer-links a:nth-child(2){transition-delay:.14s}
.drawer.is-open .drawer-links a:nth-child(3){transition-delay:.20s}
.drawer.is-open .drawer-links a:nth-child(4){transition-delay:.26s}
.drawer.is-open .drawer-links a:nth-child(5){transition-delay:.32s}
.drawer.is-open .drawer-links a:nth-child(6){transition-delay:.38s}
.drawer.is-open .drawer-links a:nth-child(7){transition-delay:.44s}
.drawer.is-open .drawer-links a:nth-child(8){transition-delay:.5s}
/* mini 能量字幕带 */
.drawer-ticker{overflow:hidden;border-top:1px solid var(--hairline);padding-top:12px;margin-top:6px;position:relative;z-index:2}
.drawer-ticker .ttrack{display:flex;width:max-content;animation:dtick 15s linear infinite}
.drawer-ticker .tset{display:flex;flex:none;align-items:center}
.drawer-ticker .tset span{font-family:var(--font-display);font-weight:700;font-stretch:125%;font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);white-space:nowrap;padding-right:24px}
.drawer-ticker .tset b{color:var(--voltage);font-size:.7em;padding-right:24px}
@keyframes dtick{to{transform:translateX(-50%)}}
.drawer-foot{flex:none;padding:16px 0 30px;border-top:1px solid var(--hairline);margin-top:14px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;position:relative;z-index:2}
.drawer-foot p{font-size:13px;color:var(--muted)}
.drawer-social{display:flex;gap:8px}
.drawer-social a{width:38px;height:38px;border-radius:9999px;border:1px solid var(--hairline);display:flex;align-items:center;justify-content:center;color:var(--body);transition:color var(--t) var(--ease),border-color var(--t) var(--ease),transform .3s var(--ease)}
.drawer-social a:hover{color:var(--voltage);border-color:var(--voltage);transform:translateY(-2px)}

/* ============ BURGER → X morph ============ */
.burger{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:22px;height:22px}
.burger i{display:block;height:2px;border-radius:2px;background:var(--ink);transition:transform .35s var(--ease-out),opacity .25s var(--ease)}
body.menu-open .burger i:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.menu-open .burger i:nth-child(2){opacity:0}
body.menu-open .burger i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* 抽屉打开时锁定下层页面滚动（html+body 双锁，iOS 兼容） */
body.menu-open{overflow:hidden;overscroll-behavior:none}
html:has(body.menu-open){overflow:hidden;overscroll-behavior:none}

/* ============ PAGE HERO (subpage header band) ============ */
.page-hero{position:relative;padding:clamp(36px,6vh,64px) 0 clamp(28px,4.5vh,44px);background:var(--canvas);border-bottom:1px solid var(--hairline);overflow:hidden}
.page-hero h1{font-family:var(--font-display);font-weight:700;font-stretch:125%;text-transform:uppercase;line-height:.92;color:var(--ink);font-size:clamp(40px,6.4vw,84px);margin-top:12px}
.page-hero .lead{margin-top:14px;max-width:560px}
.page-hero .eyebrow{color:var(--voltage)}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--muted);margin-bottom:14px}
.breadcrumb a:hover{color:var(--voltage)}
.breadcrumb i{font-style:normal;color:var(--hairline)}

/* ============ FORMS (checkout / custom / contact) ============ */
.field{display:grid;gap:8px;margin-bottom:18px}
.field label{font-size:13px;font-weight:600;color:var(--ink)}
.field label em{font-style:normal;color:var(--voltage)}
.field input,.field select,.field textarea{
  font-family:var(--font-ui);font-size:15px;color:var(--ink);
  background:var(--canvas-2);border:1px solid var(--hairline);border-radius:12px;
  padding:14px 16px;transition:border-color var(--t) var(--ease);width:100%;
}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--voltage)}
.field .hint{font-size:12px;color:var(--muted)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:640px){.form-row{grid-template-columns:1fr}}

/* ============ PRODUCT CARDS (shop / related) ============ */
.pcard{position:relative;display:flex;flex-direction:column;border:1px solid var(--hairline);border-radius:20px;background:var(--canvas-2);overflow:hidden;transition:border-color var(--t) var(--ease),transform .3s var(--ease)}
.pcard:hover{border-color:rgba(32,227,192,.45);transform:translateY(-3px)}
.pcard.is-hidden{display:none}
.pcard .pmedia{position:relative;aspect-ratio:4/3;overflow:hidden;background:#fff}
.pcard .pmedia img,.pcard .pmedia video{width:100%;height:100%;object-fit:contain}
.pcard .pmedia video{opacity:0;transition:opacity .45s var(--ease)}
.pcard:hover .pmedia video{opacity:1}
.pcard .pmedia .vchip{position:absolute;left:12px;top:12px;z-index:2;font-size:10px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--voltage);background:rgba(6,10,12,.72);backdrop-filter:blur(6px);border:1px solid rgba(32,227,192,.4);border-radius:9999px;padding:5px 10px}
.pcard .pinfo{display:flex;flex-direction:column;gap:6px;padding:20px 22px 22px}
.pcard h3{font-family:var(--font-display);font-weight:700;font-stretch:125%;text-transform:uppercase;line-height:1;color:var(--ink);font-size:clamp(20px,2vw,26px)}
.pcard .tag{font-size:13px;color:var(--muted)}
.pcard .pfoot{margin-top:12px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.pcard .price{font-size:17px;font-weight:700;color:var(--voltage);white-space:nowrap}
.pcard .go{flex:none;display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--voltage)}
.pcard .go::after{content:"→";transition:transform var(--t) var(--ease)}
.pcard:hover .go::after{transform:translateX(4px)}

/* ============ FOOTER ============ */
footer{background:var(--canvas);border-top:1px solid var(--hairline);padding:clamp(48px,7vh,72px) 0 0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:clamp(24px,3vw,48px)}
.foot-brand .logo{pointer-events:none}
.foot-brand > p{margin-top:14px;font-size:13px;color:var(--body);max-width:280px;line-height:1.55}
.foot-brand .region{margin-top:20px}
.foot-brand .region label{display:block;font-size:12px;color:var(--muted);margin-bottom:8px}
.region select{font-family:var(--font-ui);font-size:13px;font-weight:500;color:var(--ink);background:var(--canvas-2);border:1px solid rgba(255,255,255,.22);border-radius:8px;padding:8px 12px;cursor:pointer}
.foot-col h4{font-family:var(--font-display);font-weight:700;font-stretch:125%;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink)}
.foot-col ul{display:grid;gap:11px;margin-top:16px}
.foot-col a{font-size:14px;color:var(--body);transition:color var(--t) var(--ease)}
.foot-col a:hover{color:var(--voltage)}
.foot-note{margin-top:20px;font-size:12px;color:var(--muted)}
.foot-legal{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;border-top:1px solid var(--hairline);margin-top:clamp(36px,5vh,52px);padding:18px 0 96px;font-size:13px;color:var(--muted)}
.foot-legal ul{display:flex;flex-wrap:wrap;gap:18px}
.foot-legal a:hover{color:var(--ink)}
@media(max-width:900px){.foot-grid{grid-template-columns:1fr 1fr;gap:32px 24px}.foot-brand{grid-column:1 / -1}}
@media(max-width:560px){.foot-grid{grid-template-columns:1fr 1fr}}

/* ============ FABs ============ */
.top-fab{position:fixed;right:20px;bottom:20px;z-index:90;width:50px;height:50px;border-radius:9999px;border:1px solid rgba(245,247,248,.18);cursor:pointer;background:rgba(10,13,16,.72);backdrop-filter:blur(6px);color:var(--voltage);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity var(--t) var(--ease),background-color var(--t) var(--ease),bottom .3s var(--ease)}
.top-fab.is-show{opacity:1;pointer-events:auto}
.top-fab:hover{background:rgba(10,13,16,.95)}
.wa-fab{position:fixed;left:20px;bottom:20px;z-index:90;width:64px;height:64px;border-radius:9999px;background:var(--whatsapp);color:#fff;display:flex;align-items:center;justify-content:center;animation:popIn .5s var(--ease-out) .6s backwards;transition:background-color var(--t) var(--ease),bottom .3s var(--ease),opacity .3s var(--ease),transform .3s var(--ease);cursor:grab}
.wa-fab:active{cursor:grabbing}
/* 主行动按钮（[data-fab-hide]）在视口内时隐藏 FAB，防遮盖页面按钮 */
.wa-fab.is-hidden{opacity:0;pointer-events:none;transform:scale(.55)}
.wa-fab::after{content:"";position:absolute;inset:0;border-radius:9999px;border:2px solid var(--whatsapp);animation:waPulse 2.4s ease-out infinite;pointer-events:none}
.wa-fab:hover{background:#1FBF5B}
@keyframes popIn{from{opacity:0;transform:scale(.5)}to{opacity:1;transform:scale(1)}}
@keyframes waPulse{0%{transform:scale(1);opacity:.75}70%,100%{transform:scale(1.45);opacity:0}}

/* ============ REVEALS ============ */
.reveal{opacity:0;transform:translateY(36px);transition:opacity .8s var(--ease-out),transform .8s var(--ease-out)}
.reveal.is-in{opacity:1;transform:none}
.reveal h2{opacity:0;transform:translateY(28px) scale(.96);filter:blur(10px)}
.reveal.is-in h2{animation:headPush .85s var(--ease-out) .1s forwards}
@keyframes headPush{to{opacity:1;transform:none;filter:blur(0)}}

/* ============ REDUCED MOTION — keyframes 一律不写进本块（用户手机开"减少动画"） ============ */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .drawer{transition:none}
  .wa-fab{transition:none}
  .nav-build{animation:none}
}