/* ============================================================
   NOCTIS — SP-001 夜巡
   ============================================================ */

:root{
  --bg:        #070709;
  --ink:       #F2F2F4;
  --muted:     rgba(242,242,244,.55);
  --faint:     rgba(242,242,244,.30);
  --line:      rgba(242,242,244,.10);
  --line-soft: rgba(242,242,244,.06);
  --accent:    #D2465C;
  --mono:      ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;
  --sans:      -apple-system, BlinkMacSystemFont, "PingFang SC",
               "Helvetica Neue", "Hiragino Sans GB", Arial, sans-serif;
  --pad:       6vw;
}

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

html{ scroll-behavior:smooth; }

body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:15px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  cursor:grab;
}

/* 整页可拖：光标提示可旋转，交互元素仍用指针 */
a, button, .shot, label{ cursor:pointer; }
body.is-dragging, body.is-dragging *{ cursor:grabbing !important; }

/* studio sweep —— 极暗的径向光池，给产品一点“空气” */
body::before{
  content:"";
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background:
    radial-gradient(120% 80% at 50% 22%, rgba(96,104,132,.20) 0%, rgba(20,20,28,.0) 62%),
    radial-gradient(80% 60% at 50% 108%, rgba(120,32,48,.10) 0%, rgba(0,0,0,0) 60%);
}

/* film grain */
.grain{
  position:fixed; inset:0; z-index:6; pointer-events:none; opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

#scene{
  position:fixed; inset:0; z-index:1;
  width:100%; height:100%; display:block;
  transition:opacity .8s ease;
  touch-action:pan-y;
}
body[data-scene="surface"] #scene{ opacity:0; }

/* ───────── 压光层 ─────────
   3D 画面亮的地方会吃掉文字。这里只在文字区域压暗，
   产品本身依然完整可见。 */
.veil{
  position:fixed; inset:0; z-index:2;
  pointer-events:none; opacity:0;
  transition:opacity .7s ease;
}
.veil--side{
  background:
    linear-gradient(100deg,
      rgba(7,7,9,.96) 0%,
      rgba(7,7,9,.90) 22%,
      rgba(7,7,9,.58) 40%,
      rgba(7,7,9,.16) 54%,
      rgba(7,7,9,0)   66%),
    linear-gradient(to top,
      rgba(7,7,9,.86) 0%,
      rgba(7,7,9,0)  26%);
}
.veil--cta{
  background:radial-gradient(74% 60% at 50% 56%,
    rgba(7,7,9,.88) 0%,
    rgba(7,7,9,.72) 38%,
    rgba(7,7,9,.26) 68%,
    rgba(7,7,9,0)  100%);
}
body[data-scene="hero"]    .veil--side{ opacity:.74; }
body[data-scene="anatomy"] .veil--side{ opacity:1; }
body[data-scene="specs"]   .veil--side{ opacity:1; }
body[data-scene="sizes"]   .veil--side{ opacity:.88; }
body[data-scene="cta"]     .veil--cta { opacity:1; }

/* ───────── loader ───────── */
.loader{
  position:fixed; inset:0; z-index:50;
  background:var(--bg);
  display:grid; place-items:center;
  transition:opacity .8s ease, visibility .8s;
}
.loader.is-done{ opacity:0; visibility:hidden; }
.loader__inner{ width:220px; text-align:center; }
.loader__bar{
  height:1px; width:100%; background:var(--line); overflow:hidden;
}
.loader__bar span{
  display:block; height:100%; width:0%;
  background:var(--ink); transition:width .35s ease;
}
.loader__txt{
  margin-top:16px; font-family:var(--mono); font-size:10px;
  letter-spacing:.28em; color:var(--faint);
}

/* ───────── nav ───────── */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:20;
  display:flex; align-items:center; justify-content:space-between;
  padding:22px var(--pad) 44px;
  font-family:var(--mono); font-size:10.5px;
  letter-spacing:.20em; text-transform:uppercase;
  background:linear-gradient(to bottom,
    rgba(7,7,9,.92) 0%,
    rgba(7,7,9,.62) 46%,
    rgba(7,7,9,0)   100%);
  pointer-events:none;
}
.nav__brand,.nav__links,.nav__right{ pointer-events:auto; }
.nav__brand{
  color:var(--ink); text-decoration:none; font-weight:500;
  letter-spacing:.34em;
}
.nav__links{ display:flex; gap:30px; }
.nav__links a{
  color:var(--muted); text-decoration:none;
  padding-bottom:3px;
  border-bottom:1px solid transparent;
  transition:color .3s, border-color .3s;
}
.nav__links a:hover{ color:var(--ink); }
.nav__links a.is-active{
  color:var(--ink);
  border-bottom-color:rgba(242,242,244,.45);
}
.nav__right{ display:flex; align-items:center; gap:22px; }
.nav__stock{ color:var(--faint); }
.nav__cta{
  color:var(--ink); text-decoration:none;
  border:1px solid var(--line); border-radius:100px;
  padding:7px 16px 6px;
  transition:border-color .3s, background .3s;
}
.nav__cta:hover{ border-color:rgba(242,242,244,.4); background:rgba(242,242,244,.06); }

/* ───────── shared ───────── */
main{ position:relative; z-index:3; }

section{
  position:relative;
  min-height:100vh;
  padding:130px var(--pad);
  display:flex;
}

.eyebrow{
  font-family:var(--mono); font-size:10.5px;
  letter-spacing:.30em; text-transform:uppercase;
  color:var(--faint); margin-bottom:26px;
}

h2{
  font-size:clamp(34px, 4.6vw, 68px);
  font-weight:250;
  line-height:1.06;
  letter-spacing:-.035em;
}

.lead{
  margin-top:26px;
  max-width:34ch;
  color:var(--muted);
  font-size:14.5px;
  line-height:1.85;
}

/* ───────── HERO ───────── */
.hero{ align-items:flex-end; }
.hero__content{ position:relative; z-index:2; max-width:620px; }
.hero__title{
  font-size:clamp(64px, 9.6vw, 148px);
  font-weight:200;
  line-height:.88;
  letter-spacing:-.055em;
  margin-left:-.05em;
}
.hero__sub{
  margin-top:26px;
  color:var(--muted);
  font-size:14.5px;
  letter-spacing:.01em;
}
.hero__meta{
  display:flex; flex-wrap:wrap; gap:0 46px;
  margin-top:46px; padding-top:22px;
  border-top:1px solid var(--line);
}
.hero__meta > div{ display:flex; flex-direction:column; gap:4px; }
.hero__meta .k{
  font-family:var(--mono); font-size:9.5px;
  letter-spacing:.22em; color:var(--faint); text-transform:uppercase;
}
.hero__meta .v{ font-size:14px; letter-spacing:.01em; }
.hero__meta .v i{ font-style:normal; color:var(--faint); font-size:11px; margin-left:2px; }

.hero__hint{
  position:absolute; right:var(--pad); bottom:130px;
  display:flex; align-items:center; gap:12px;
  font-family:var(--mono); font-size:10px;
  letter-spacing:.24em; text-transform:uppercase;
  color:var(--faint);
}
.hero__arrow{ animation:bob 2.2s ease-in-out infinite; }
@keyframes bob{
  0%,100%{ transform:translateY(0); opacity:.4; }
  50%    { transform:translateY(5px); opacity:1; }
}

/* ───────── ANATOMY ───────── */
.anatomy{
  align-items:center;
  pointer-events:none;
}
.anatomy__left{
  width:min(400px, 38vw);
  flex:none;
}
.anatomy__list{
  margin-top:52px;
  display:flex; flex-direction:column;
  border-top:1px solid var(--line);
}
.layer-item{
  display:flex; gap:16px;
  padding:22px 0 20px;
  border-bottom:1px solid var(--line-soft);
}
.layer-item__num{
  font-family:var(--mono); font-size:10px;
  color:var(--accent); letter-spacing:.1em; padding-top:3px;
  flex:none;
}
.layer-item__body h3{
  font-size:14px; font-weight:500; letter-spacing:.01em;
  margin-bottom:7px;
}
.layer-item__body p{
  font-size:12.5px; line-height:1.7; color:var(--muted);
}
.layer-item__spec{
  margin-top:10px; font-family:var(--mono); font-size:9px;
  letter-spacing:.16em; text-transform:uppercase; color:var(--faint);
}

/* 3D 投影标签 */
.tags{ position:fixed; inset:0; z-index:4; pointer-events:none; }
.tag{
  position:absolute; top:0; left:0;
  display:flex; align-items:center;
  opacity:0; transition:opacity .4s ease;
  will-change:transform;
}
.tag__dot{
  width:5px; height:5px; border-radius:50%;
  background:var(--ink); flex:none;
  box-shadow:0 0 0 3px rgba(242,242,244,.14);
}
.tag__line{
  width:56px; height:1px; background:rgba(242,242,244,.28);
  flex:none;
}
.tag__label{
  font-family:var(--mono); font-size:10px;
  letter-spacing:.18em; text-transform:uppercase;
  color:rgba(242,242,244,.92); white-space:nowrap;
  padding-left:4px;
  text-shadow:0 1px 12px rgba(0,0,0,.85), 0 0 2px rgba(0,0,0,.9);
}
/* 三层标签错位：避免三条引线叠在一条竖线上 */
.tag:nth-child(1) .tag__line{ width:34px; }
.tag:nth-child(2) .tag__line{ width:74px; }
.tag:nth-child(3) .tag__line{ width:54px; }

/* ───────── SURFACE ───────── */
.surface{
  display:grid;
  grid-template-columns:minmax(300px, 400px) 1fr;
  gap:70px;
  align-items:center;
}
.surface__head h2{ margin-bottom:0; }
.surface__head .lead{ margin-top:24px; max-width:32ch; }

.surface__stats{
  display:flex; flex-wrap:wrap; gap:14px 36px;
  margin-top:34px; padding-top:20px;
  border-top:1px solid var(--line);
}
.surface__stats > div{ display:flex; flex-direction:column; gap:2px; }
.surface__stats .v{ font-size:19px; font-weight:300; letter-spacing:-.01em; }
.surface__stats .k{
  font-family:var(--mono); font-size:9px;
  letter-spacing:.18em; text-transform:uppercase; color:var(--faint);
}

.surface__grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  align-items:start;
}
.shot{ position:relative; overflow:hidden; }
.shot--offset{ transform:translateY(-34px); }
.shot img{
  width:100%; height:56vh; object-fit:cover; display:block;
  transition:transform 1.2s cubic-bezier(.2,.8,.2,1);
}
.shot:hover img{ transform:scale(1.04); }
.shot figcaption{
  display:flex; align-items:baseline; gap:12px;
  margin-top:12px;
  font-size:11.5px; color:var(--muted);
}
.shot figcaption span{
  font-family:var(--mono); font-size:9px;
  letter-spacing:.18em; text-transform:uppercase; color:var(--faint);
}

/* ───────── SPECS ───────── */
.specs{ flex-direction:column; justify-content:center; }
.specs__head{ margin-bottom:52px; }
.specs__grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0 44px;
  max-width:600px;   /* 右半边留给 3D，数值不压到产品上 */
}
.spec-row{
  display:flex; justify-content:space-between; align-items:baseline;
  padding:15px 0;
  border-bottom:1px solid var(--line-soft);
}
.spec-row .k{
  font-family:var(--mono); font-size:10px;
  letter-spacing:.18em; text-transform:uppercase; color:var(--faint);
}
.spec-row .v{
  font-size:14px; letter-spacing:.01em;
  text-shadow:0 1px 12px rgba(7,7,9,.85);
}
.spec-row .v i{ font-style:normal; color:var(--faint); font-size:11px; }

/* ───────── SIZES ───────── */
.sizes{ flex-direction:column; justify-content:center; gap:60px; }
.sizes__cards{
  display:grid; grid-template-columns:repeat(3,1fr); gap:0;
  border-top:1px solid var(--line);
}
.size-card{
  appearance:none; border:0;
  background:rgba(9,9,13,.52);
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  border-bottom:1px solid var(--line);
  border-right:1px solid var(--line-soft);
  color:var(--ink); font-family:inherit; text-align:left;
  padding:30px 26px 34px;
  cursor:pointer;
  display:flex; flex-direction:column; gap:10px;
  transition:background .35s ease;
  position:relative;
}
.size-card:last-child{ border-right:0; }
.size-card:hover{ background:rgba(18,18,24,.62); }
.size-card.is-active{ background:rgba(26,26,34,.72); }
.size-card.is-active::before{
  content:""; position:absolute; top:-1px; left:0; right:0; height:1px;
  background:var(--accent);
}
.size-card__name{
  font-size:30px; font-weight:200; letter-spacing:-.02em;
}
.size-card__dim{
  font-family:var(--mono); font-size:11px;
  letter-spacing:.12em; color:var(--muted);
}
.size-card__note{
  font-size:12px; color:var(--faint); margin-top:6px;
}

/* ───────── CTA ───────── */
.cta{
  flex-direction:column;
  align-items:center; justify-content:center;
  text-align:center;
  gap:0;
}
.cta__title{
  font-size:clamp(70px, 11vw, 160px);
  font-weight:200; line-height:.9; letter-spacing:-.055em;
}
.cta__sub{
  margin-top:22px; color:var(--muted); font-size:14px;
}
.cta__btn{
  margin-top:44px;
  display:inline-block;
  appearance:none; background:none; font:inherit; cursor:pointer;
  padding:15px 40px;
  border:1px solid rgba(242,242,244,.28);
  border-radius:100px;
  color:var(--ink); text-decoration:none;
  font-size:13px; letter-spacing:.06em;
  transition:background .35s, border-color .35s, transform .35s;
}
.cta__btn:hover{
  background:var(--ink); color:#0a0a0c; border-color:var(--ink);
  transform:translateY(-1px);
}
.cta__foot{
  position:absolute; left:var(--pad); right:var(--pad); bottom:34px;
  display:flex; justify-content:space-between;
  font-family:var(--mono); font-size:9.5px;
  letter-spacing:.2em; text-transform:uppercase; color:var(--faint);
  border-top:1px solid var(--line-soft);
  padding-top:16px;
}

/* ───────── HUD ───────── */
.hud{
  position:fixed; right:var(--pad); bottom:34px; z-index:10;
  display:flex; gap:8px;
  transition:opacity .4s ease;
}
.hud__btn{
  appearance:none; background:rgba(12,12,16,.55);
  backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:100px;
  color:var(--muted);
  font-family:var(--mono); font-size:9.5px;
  letter-spacing:.16em; text-transform:uppercase;
  padding:8px 14px 7px;
  cursor:pointer;
  transition:color .3s, border-color .3s, background .3s;
}
.hud__btn:hover{ color:var(--ink); border-color:rgba(242,242,244,.28); }
.hud__btn[aria-pressed="true"]{
  color:var(--ink);
  border-color:rgba(242,242,244,.42);
  background:rgba(242,242,244,.10);
}

/* ───────── fallback ───────── */
.fallback{
  position:fixed; inset:0; z-index:40;
  display:grid; place-items:center;
  background:var(--bg); color:var(--muted);
  font-size:14px; text-align:center; padding:0 30px;
}
.fallback[hidden]{ display:none; }

/* ───────── responsive ───────── */
@media (max-width:900px){
  :root{ --pad:24px; }
  .nav{ padding:18px var(--pad) 36px; }
  .nav__links{ display:none; }
  .nav__stock{ display:none; }
  /* 竖屏是上下排版，压光层改成从底部往上压 */
  .veil--side{
    background:linear-gradient(to top,
      rgba(7,7,9,.97) 0%,
      rgba(7,7,9,.92) 26%,
      rgba(7,7,9,.45) 46%,
      rgba(7,7,9,0)   64%);
  }
  .anatomy{ gap:40px; align-items:flex-start; }
  /* 竖屏下结构说明是一大段长文，3D 只能退成背景暗示，否则文字读不了 */
  body[data-scene="anatomy"] #scene{ opacity:.22; }
  .anatomy__left{ width:100%; }
  .anatomy__list{ flex-direction:column; gap:24px; }
  .layer-item{ padding-right:0; }
  .layer-item + .layer-item{ padding-left:0; border-left:0; border-top:1px solid var(--line-soft); padding-top:24px; }
  .surface{ grid-template-columns:1fr; gap:34px; }
  .surface__grid{ grid-template-columns:1fr; }
  .shot img{ height:44vh; }
  .shot--offset{ transform:none; }
  .specs__grid{ grid-template-columns:1fr; gap:0 0; }
  .sizes__cards{ grid-template-columns:1fr; }
  .size-card{ border-right:0; }
  .hero__hint{ display:none; }
  .hero__meta{ gap:18px 26px; }
  .tags{ display:none; }
  .hud{ left:var(--pad); right:var(--pad); justify-content:center; }
}

/* ───────── 尊重系统「减弱动态效果」 ───────── */
@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  .hero__arrow{ animation:none; }
  .shot img{ transition:none; }
  *{ transition-duration:.01ms !important; }
}

/* ============================================================
   购物袋 / 下单 / 浮层
   ------------------------------------------------------------
   与前面同一套语言：无圆角面板、1px --line 分隔、mono 小字、
   毛玻璃。不引入卡片阴影。
   ============================================================ */

body.no-scroll{ overflow:hidden; }

/* ───────── 导航里的购物袋入口 ───────── */
.nav__cart{
  appearance:none; background:none; border:0; padding:0;
  display:inline-flex; align-items:baseline; gap:8px;
  font-family:var(--mono); font-size:10.5px;
  letter-spacing:.20em; text-transform:uppercase;
  color:var(--muted); cursor:pointer;
  transition:color .3s;
}
.nav__cart:hover{ color:var(--ink); }
.nav__cart b{
  font-weight:400; font-size:9.5px;
  color:var(--ink);
  border:1px solid var(--line);
  border-radius:100px;
  min-width:19px; height:19px;
  display:inline-flex; align-items:center; justify-content:center;
  padding:0 4px;
  transition:border-color .3s, color .3s;
}
.nav__cart b.is-empty{ color:var(--faint); }

/* ───────── 遮罩 + 抽屉 ───────── */
.scrim{
  position:fixed; inset:0; z-index:80;
  background:rgba(4,4,6,.62);
  backdrop-filter:blur(2px); -webkit-backdrop-filter:blur(2px);
  animation:veil-in .3s ease;
}
.scrim[hidden]{ display:none; }
@keyframes veil-in{ from{ opacity:0 } to{ opacity:1 } }

.drawer{
  position:fixed; top:0; right:0; bottom:0; z-index:90;
  width:min(420px, 100vw);
  display:flex; flex-direction:column;
  background:rgba(10,10,13,.94);
  backdrop-filter:blur(26px) saturate(120%);
  -webkit-backdrop-filter:blur(26px) saturate(120%);
  border-left:1px solid var(--line);
  transform:translateX(101%);
  transition:transform .42s cubic-bezier(.22,.9,.24,1);
}
.drawer.is-open{ transform:translateX(0); }

.drawer__top{
  display:flex; align-items:flex-start; justify-content:space-between;
  padding:26px 26px 20px;
  border-bottom:1px solid var(--line);
}
.drawer__eyebrow{
  font-family:var(--mono); font-size:9.5px;
  letter-spacing:.30em; text-transform:uppercase; color:var(--faint);
}
.drawer__title{
  margin-top:8px; font-size:21px; font-weight:250; letter-spacing:-.02em;
}
.drawer__close{
  appearance:none; background:none; border:1px solid var(--line);
  border-radius:50%; width:30px; height:30px;
  color:var(--muted); cursor:pointer;
  display:grid; place-items:center;
  transition:color .3s, border-color .3s;
}
.drawer__close:hover{ color:var(--ink); border-color:rgba(242,242,244,.4); }
.drawer__close svg{ width:13px; height:13px; fill:none; }

.drawer__body{ flex:1; overflow-y:auto; padding:0 26px; }

.drawer__empty{
  padding:64px 0; color:var(--muted); font-size:13px;
  display:flex; flex-direction:column; align-items:flex-start; gap:20px;
}
.drawer__pick{
  appearance:none; background:none; cursor:pointer;
  border:1px solid var(--line); border-radius:100px;
  padding:9px 18px; color:var(--ink);
  font-family:var(--mono); font-size:9.5px;
  letter-spacing:.18em; text-transform:uppercase;
  transition:border-color .3s;
}
.drawer__pick:hover{ border-color:rgba(242,242,244,.4); }

/* ───────── 购物袋行 ───────── */
.line{
  display:grid;
  grid-template-columns:1fr auto auto auto;
  align-items:center; gap:14px;
  padding:22px 0;
  border-bottom:1px solid var(--line-soft);
}
.line__main{ display:flex; flex-direction:column; gap:5px; min-width:0; }
.line__name{ font-size:14px; font-weight:400; letter-spacing:.01em; }
.line__name i{
  font-style:normal; font-family:var(--mono); font-size:9.5px;
  letter-spacing:.14em; color:var(--faint); margin-left:6px;
}
.line__dim{
  font-family:var(--mono); font-size:9.5px;
  letter-spacing:.12em; color:var(--faint);
}
.line__price{
  font-size:13px; font-variant-numeric:tabular-nums;
  letter-spacing:.01em; min-width:64px; text-align:right;
}
.line__rm{
  appearance:none; background:none; border:0; cursor:pointer;
  color:var(--faint); font-size:16px; line-height:1;
  padding:4px 2px; transition:color .3s;
}
.line__rm:hover{ color:var(--accent); }

/* ───────── 数量步进 ───────── */
.qty{
  display:inline-flex; align-items:center;
  border:1px solid var(--line);
}
.qty button{
  appearance:none; background:none; border:0; cursor:pointer;
  width:26px; height:26px;
  color:var(--muted); font-size:13px; line-height:1;
  display:grid; place-items:center;
  transition:color .25s;
}
.qty button:hover{ color:var(--ink); }
.qty__v{
  min-width:26px; text-align:center;
  font-family:var(--mono); font-size:11px;
  font-variant-numeric:tabular-nums; color:var(--ink);
}

/* ───────── 购物袋底部 ───────── */
.drawer__foot{
  padding:20px 26px 26px;
  border-top:1px solid var(--line);
}
.drawer__sum{
  display:flex; justify-content:space-between; align-items:baseline;
  font-family:var(--mono); font-size:10px;
  letter-spacing:.18em; text-transform:uppercase; color:var(--faint);
}
.drawer__sum b{
  font-family:var(--sans); font-size:19px; font-weight:300;
  letter-spacing:-.01em; color:var(--ink);
  font-variant-numeric:tabular-nums;
}
.drawer__note{
  margin-top:10px; font-size:11.5px; color:var(--faint);
}
.drawer__go{
  margin-top:18px; width:100%;
  appearance:none; background:none; cursor:pointer;
  border:1px solid rgba(242,242,244,.28); border-radius:100px;
  padding:14px 0; color:var(--ink);
  font-family:inherit; font-size:13px; letter-spacing:.06em;
  transition:background .35s, color .35s, border-color .35s;
}
.drawer__go:hover{
  background:var(--ink); color:#0a0a0c; border-color:var(--ink);
}

/* ───────── Toast ───────── */
.toast{
  position:fixed; left:50%; bottom:42px; z-index:95;
  transform:translate(-50%, 12px);
  background:var(--ink); color:#0a0a0c;
  font-family:var(--mono); font-size:10px;
  letter-spacing:.16em; text-transform:uppercase;
  padding:10px 18px; border-radius:100px;
  opacity:0; pointer-events:none;
  transition:opacity .3s, transform .3s;
}
.toast.is-on{ opacity:1; transform:translate(-50%, 0); }

/* ───────── 下单区 ───────── */
.order{
  display:grid;
  grid-template-columns:minmax(300px, 400px) minmax(0, 520px);
  justify-content:space-between;
  gap:70px; align-items:center;
}
.order__head .lead{ margin-top:24px; max-width:30ch; }

.order__panel{
  border-top:1px solid var(--line);
  padding-top:8px;
  max-width:520px;
}

.field{
  display:flex; flex-direction:column; gap:8px;
  padding:18px 0;
  border-bottom:1px solid var(--line-soft);
}
.field--row{
  flex-direction:row; align-items:center; justify-content:space-between;
  gap:16px;
}
.field__k{
  font-family:var(--mono); font-size:9.5px;
  letter-spacing:.20em; text-transform:uppercase; color:var(--faint);
}
.field input{
  appearance:none; background:none; border:0; outline:none;
  color:var(--ink); font-family:inherit; font-size:14px;
  letter-spacing:.01em; padding:2px 0 6px;
  border-bottom:1px solid transparent;
  transition:border-color .3s;
}
.field input::placeholder{ color:rgba(242,242,244,.24); }
.field input:focus{ border-bottom-color:rgba(242,242,244,.45); }
.field.is-bad input{ border-bottom-color:var(--accent); }
.field.is-bad .field__k{ color:var(--accent); }

.order__sizes{ display:flex; gap:8px; flex-wrap:wrap; margin-top:6px; }
.order__size{
  appearance:none; background:rgba(242,242,244,.03); cursor:pointer;
  border:1px solid var(--line);
  padding:9px 14px 8px;
  display:flex; flex-direction:column; gap:3px; align-items:flex-start;
  color:var(--muted);
  transition:border-color .3s, background .3s, color .3s;
}
.order__size b{ font-size:13px; font-weight:400; color:var(--ink); }
.order__size span{
  font-family:var(--mono); font-size:9px;
  letter-spacing:.10em; color:var(--faint);
}
.order__size:hover{ border-color:rgba(242,242,244,.28); }
.order__size.is-active{
  border-color:rgba(242,242,244,.45);
  background:rgba(242,242,244,.07);
}

.order__submit{
  margin-top:26px;
  appearance:none; background:none; cursor:pointer;
  border:1px solid rgba(242,242,244,.28); border-radius:100px;
  padding:14px 40px; color:var(--ink);
  font-family:inherit; font-size:13px; letter-spacing:.06em;
  transition:background .35s, color .35s, border-color .35s, transform .35s;
}
.order__submit:hover{
  background:var(--ink); color:#0a0a0c; border-color:var(--ink);
  transform:translateY(-1px);
}

.order__ok{
  padding:12px 0 0;
  display:flex; flex-direction:column; gap:14px; align-items:flex-start;
}
.order__ok h3{ font-size:24px; font-weight:250; letter-spacing:-.02em; }
.order__no{
  font-family:var(--mono); font-size:15px;
  letter-spacing:.16em; color:var(--ink);
}
.order__hint{ font-size:13px; color:var(--muted); max-width:34ch; }
.order__copy{
  appearance:none; background:none; cursor:pointer;
  border:1px solid var(--line); border-radius:100px;
  padding:9px 18px; color:var(--muted);
  font-family:var(--mono); font-size:9.5px;
  letter-spacing:.18em; text-transform:uppercase;
  transition:color .3s, border-color .3s;
}
.order__copy:hover{ color:var(--ink); border-color:rgba(242,242,244,.4); }

/* [hidden] 要能压过 display:flex，否则成功面板一进来就露出来 */
.order__ok[hidden], .order__form[hidden]{ display:none; }

/* 下单屏：表单是主角，3D 退场，HUD 一并收起（否则压住提交按钮） */
body[data-scene="order"] #scene{ opacity:0; }
body[data-scene="order"] .hud{ opacity:0; pointer-events:none; }
body[data-scene="order"] .veil--side,
body[data-scene="order"] .veil--cta{ opacity:0; }

/* ───────── 浮层 / 下单区 响应式 ───────── */
@media (max-width:900px){
  .drawer{ width:100vw; border-left:0; }
  .drawer__top, .drawer__body, .drawer__foot{ padding-left:20px; padding-right:20px; }
  .line{ grid-template-columns:1fr auto; row-gap:12px; }
  .line__price{ text-align:left; min-width:0; }
  .order{ grid-template-columns:1fr; gap:34px; }
  .order__panel{ max-width:none; }
  .toast{ bottom:186px; }  /* 抬到抽屉底栏之上，别压住小计 */
}