:root {
  --bg: #f3f1eb;
  --card: #ffffff;
  --ink: #1c1b18;
  --mute: #6e6a62;
  --dim: #9a958b;
  --line: #e4e0d6;
  --soft: #ece9e1;
  --ok: #2c6b45;
  --bad: #b42318;
  --warn: #8a6a12;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 "PingFang SC", "Microsoft YaHei", Inter, system-ui, sans-serif;
}
button, input, textarea, select { font: inherit; color: inherit; }
img { max-width: 100%; display: block; }
[hidden] { display: none !important; }

.kicker {
  margin: 0;
  letter-spacing: 0.16em;
  font-size: 0.68rem;
  color: var(--mute);
}

.gate {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 2rem;
}
.gate__card {
  width: min(26rem, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 2rem 1.6rem 1.6rem;
}
.gate h1 {
  margin: 0.35rem 0 0.7rem;
  font-size: 2rem;
  font-weight: 650;
  letter-spacing: 0.12em;
}
.lede { margin: 0 0 1.3rem; color: var(--mute); }
.gate__field { display: grid; grid-template-columns: 1fr auto; gap: 0.45rem; }

.btn {
  border: 0;
  background: var(--ink);
  color: #f7f4ee;
  border-radius: 999px;
  padding: 0.62rem 1.15rem;
  cursor: pointer;
}
.btn:hover { filter: brightness(1.08); }
.ghost {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
}
.danger { color: var(--bad); border-color: #f0cfc9; }
.textbtn {
  background: none;
  border: 0;
  color: var(--mute);
  cursor: pointer;
  text-align: left;
  padding: 0.4rem 0.65rem;
}

#app:not([hidden]) {
  display: grid;
  grid-template-columns: 13.2rem 1fr;
  min-height: 100dvh;
}
.rail {
  padding: 1.3rem 0.75rem 1rem;
  border-right: 1px solid var(--line);
  background: #faf8f3;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.rail__brand { padding: 0 0.5rem 0.3rem; }
.rail__brand b { display: block; letter-spacing: 0.08em; }
.rail__brand span { color: var(--mute); font-size: 0.72rem; }
.rail nav { display: grid; gap: 0.08rem; flex: 1; align-content: start; }
.rail .g {
  margin: 0.9rem 0.5rem 0.2rem;
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  color: var(--dim);
}
.rail .g:first-child { margin-top: 0.15rem; }
.rail nav button {
  background: transparent;
  border: 0;
  text-align: left;
  padding: 0.42rem 0.65rem;
  border-radius: 0.5rem;
  cursor: pointer;
  color: var(--mute);
}
.rail nav button:hover { color: var(--ink); background: var(--soft); }
.rail nav button.is-on {
  color: var(--ink);
  background: #fff;
  box-shadow: 0 0 0 1px var(--line);
}

.stage { min-width: 0; display: flex; flex-direction: column; }
.bar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: end;
  padding: 1.25rem 1.8rem 0.85rem;
  position: sticky;
  top: 0;
  z-index: 4;
  background: linear-gradient(var(--bg), rgba(243, 241, 235, 0.92) 70%, transparent);
}
.bar h2 { margin: 0.15rem 0 0; font-size: 1.55rem; font-weight: 650; }
.hint { color: var(--mute); font-size: 0.8rem; margin-right: 0.7rem; }
.hint.is-dirty { color: var(--warn); }
.canvas { padding: 0.3rem 1.8rem 4rem; }

label.f {
  display: grid;
  gap: 0.28rem;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--mute);
}
input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 0.5rem;
  padding: 0.5rem 0.65rem;
  outline: none;
}
input:focus, textarea:focus, select:focus { border-color: #bbb6aa; }
textarea { min-height: 5.4rem; resize: vertical; line-height: 1.6; }
.sw { display: flex; align-items: center; gap: 0.45rem; letter-spacing: 0; font-size: 0.88rem; color: var(--ink); }
.sw input { width: auto; }

.hero {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.35rem 1.3rem 1.2rem;
  margin-bottom: 1rem;
}
.hero em { font-style: normal; color: var(--mute); font-size: 0.78rem; }
.hero strong { display: block; font-size: clamp(2.2rem, 5vw, 3.4rem); letter-spacing: -0.04em; margin: 0.2rem 0 0.4rem; }
.hero p { margin: 0; color: var(--mute); }
.jumps { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-top: 0.95rem; }
.jump {
  background: var(--soft);
  border: 0;
  border-radius: 999px;
  padding: 0.36rem 0.75rem;
  cursor: pointer;
}

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.65rem; margin-bottom: 1.2rem; }
.stat {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  padding: 0.95rem 1rem;
}
.stat b { display: block; font-size: 1.35rem; }
.stat span { color: var(--mute); font-size: 0.75rem; }

.lane { margin-bottom: 1.4rem; }
.lane__h { display: flex; align-items: baseline; gap: 0.6rem; margin: 0 0 0.7rem; }
.lane__n { font-size: 0.68rem; color: var(--dim); letter-spacing: 0.14em; }
.lane h3 { margin: 0; font-size: 0.88rem; font-weight: 600; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(16.5rem, 1fr)); gap: 0.7rem; }

.sku, .deal, .faq, .person, .tile, .logo, .panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0.95rem;
}
.sku, .deal, .faq, .person, .tile { cursor: pointer; }
.sku, .deal { padding: 1rem 1.05rem 0.95rem; }
.sku:hover, .deal:hover, .faq:hover, .person:hover { border-color: #cfcabe; }
.sku.is-hot, .deal.is-hot { box-shadow: inset 0 0 0 1px var(--ink); }
.sku__id { margin: 0 0 0.15rem; font-size: 0.68rem; color: var(--dim); letter-spacing: 0.08em; }
.sku__top, .deal__top { display: flex; justify-content: space-between; gap: 0.5rem; }
.sku__name, .deal h4 { margin: 0; font-size: 1.02rem; }
.yen { font-size: 1.7rem; letter-spacing: -0.04em; margin: 0.4rem 0 0.1rem; font-weight: 650; }
.yen small { font-size: 0.72rem; color: var(--mute); margin-left: 0.1rem; font-weight: 400; }
.sku__p, .deal__p { margin: 0; color: var(--mute); font-size: 0.82rem; min-height: 2.3em; }
.deal__was { color: var(--dim); font-size: 0.76rem; }
.chip {
  font-size: 0.62rem;
  padding: 0.14rem 0.4rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--mute);
  white-space: nowrap;
}
.chip--on { background: var(--ink); color: #fff; border-color: var(--ink); }
.chip--warn { color: var(--bad); border-color: #f0cfc9; }
.chip--off { opacity: 0.55; }

.media { display: grid; grid-template-columns: repeat(auto-fill, minmax(14.2rem, 1fr)); gap: 0.65rem; }
.tile__kind {
  background: rgba(8, 6, 4, 0.72);
  border-radius: 999px;
  color: #fff;
  font-size: 0.68rem;
  left: 0.55rem;
  letter-spacing: 0.04em;
  padding: 0.18rem 0.5rem;
  position: absolute;
  top: 0.55rem;
  z-index: 1;
}
.tile img, .tile .ph { width: 100%; height: 100%; object-fit: cover; background: var(--soft); }
.tile__meta {
  position: absolute; inset: auto 0 0;
  padding: 2.2rem 0.85rem 0.8rem;
  background: linear-gradient(transparent, rgba(20, 18, 14, 0.72));
  color: #fff;
}
.tile__meta span { opacity: 0.8; font-size: 0.74rem; }
.media .add { aspect-ratio: 4/5; min-height: 0; }

.logos { display: grid; grid-template-columns: repeat(auto-fill, minmax(10rem, 1fr)); gap: 0.65rem; }
.logo {
  min-height: 6.2rem;
  display: grid;
  place-items: center;
  padding: 1rem;
  cursor: pointer;
}
.logo img { max-height: 2.3rem; max-width: 80%; }

.split { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 1rem; align-items: start; }
.split > *:last-child { position: sticky; top: 5rem; }
.panel { padding: 1.15rem 1.2rem 1.25rem; }
.panel h3 { margin: 0 0 0.9rem; font-size: 0.95rem; }
.stack { display: grid; gap: 0.75rem; }
.fg { display: grid; gap: 0.65rem; padding-bottom: 0.8rem; border-bottom: 1px solid var(--line); }
.fg:last-child { border: 0; padding: 0; }
.fg__t { margin: 0; font-size: 0.68rem; letter-spacing: 0.12em; color: var(--dim); }

.preview {
  height: 20rem;
  border-radius: 1rem;
  border: 1px solid var(--line);
  background: #fff;
  padding: 1.3rem 1.2rem;
  display: flex;
  flex-direction: column;
  justify-content: end;
}
.preview strong { font-size: 2.1rem; display: block; }
.preview em { font-style: normal; color: var(--mute); font-size: 0.78rem; }

.faq { padding: 1rem 1.1rem; }
.faq small { color: var(--dim); font-size: 0.68rem; letter-spacing: 0.1em; }
.faq b { display: block; margin: 0.22rem 0 0.3rem; }
.faq p { margin: 0; color: var(--mute); font-size: 0.84rem; }

.person {
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  gap: 0.75rem;
  align-items: center;
  padding: 0.85rem 0.95rem;
}
.person img, .person .av {
  width: 3.2rem; height: 3.2rem; border-radius: 50%; object-fit: cover; background: var(--soft);
  display: grid; place-items: center;
}
.person span { color: var(--mute); font-size: 0.76rem; }

.add {
  border: 1px dashed var(--line);
  border-radius: 0.95rem;
  min-height: 7rem;
  display: grid;
  place-items: center;
  color: var(--mute);
  cursor: pointer;
  background: transparent;
}
.add:hover { color: var(--ink); }

.sheet {
  position: fixed; top: 0; right: 0;
  width: min(30rem, 100%);
  height: 100dvh;
  background: #fff;
  border-left: 1px solid var(--line);
  z-index: 20;
  overflow: auto;
  padding: 1.25rem 1.2rem 2rem;
}
.sheet h3 { margin: 0; }
.sheet__top { display: flex; justify-content: space-between; gap: 0.6rem; align-items: center; margin-bottom: 1rem; }
.sheet .hint { display: block; margin: 0.75rem 0 0; line-height: 1.5; }
.slots { display: grid; gap: 0.45rem; margin-top: 0.4rem; }
.mask { position: fixed; inset: 0; background: rgba(28, 27, 24, 0.28); z-index: 19; }
.up { display: flex; gap: 0.5rem; margin: 0; }
.thumb { width: 100%; height: 9rem; object-fit: cover; border-radius: 0.7rem; background: var(--soft); margin-bottom: 0.45rem; }
.err { color: var(--bad); font-size: 0.82rem; margin: 0; }

.pair { display: grid; grid-template-columns: 1fr 1fr auto; gap: 0.4rem; align-items: center; }
.checks { display: grid; gap: 0.35rem; }
.compose {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1rem;
  align-items: start;
}
.compose textarea { min-height: 16rem; }
.compose__preview {
  position: sticky;
  top: 5rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.1rem 1.15rem 1.3rem;
  max-height: calc(100dvh - 7rem);
  overflow: auto;
}
.compose__preview h3 { margin: 0 0 0.5rem; font-size: 1.15rem; }
.compose__preview .lead { color: var(--mute); }
.md p { margin: 0.55rem 0; }
.md h2 { font-size: 1.05rem; margin: 1rem 0 0.4rem; }
.note { font-size: 0.78rem; color: var(--mute); margin: 0; }

@media (max-width: 72rem) {
  #app:not([hidden]) { grid-template-columns: 1fr; }
  .rail { flex-direction: row; flex-wrap: wrap; align-items: center; }
  .rail nav { display: flex; flex-wrap: wrap; flex: 1; }
  .stats, .split, .compose { grid-template-columns: 1fr; }
}
@media (max-width: 48rem) {
  .bar { flex-direction: column; align-items: start; }
  .gate__field { grid-template-columns: 1fr; }
  .canvas, .bar { padding-left: 1rem; padding-right: 1rem; }
}