/* TRENDLOGO（d026）
   器はふつうのプロダクトの文法（ヒーロー → 入力 → 作例/結果 → 仕組み）。
   見本帳の世界観（厚紙・通し番号・細罫）は結果カードにだけ残す。差し色は CTA とブランドマークだけ。 */

:root {
  --paper: #f4f1ea;
  --paper-2: #ebe6db;
  --ink: #161513;
  --ink-2: #5a5650;
  --rule: #c9c2b3;
  --card: #fbfaf6;
  --shadow: 0 1px 0 #d9d2c2, 0 10px 24px -14px rgba(20, 18, 12, .35);
  --accent: #e8452c;
  --accent-soft: #fbd9d2;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  background-image: radial-gradient(#e6e0d3 .6px, transparent .6px);
  background-size: 7px 7px;
}
b { font-weight: 700; }
small { font-size: .78em; color: var(--ink-2); font-weight: 400; }

/* ── ナビ・ヒーロー ─────────────────────────── */
.nav { position: sticky; top: 0; z-index: 20; background: rgba(244, 241, 234, .92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--rule); }
.nav-in { max-width: 1040px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-size: 20px; letter-spacing: .04em; font-weight: 800; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; }
.brand.small { font-size: 16px; }
.mark { width: 24px; height: 24px; }
.nav-links { display: flex; gap: 20px; align-items: center; font-size: 13px; }
.nav-links a { color: var(--ink-2); text-decoration: none; letter-spacing: .04em; }
.nav-links a:hover { color: var(--ink); }
.nav-cta { background: var(--ink); color: var(--card) !important; padding: 8px 16px; border-radius: 999px; font-weight: 700; }
@media (max-width: 640px) { .nav-links a:not(.nav-cta) { display: none; } }

.hero { display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; padding: 56px 0 36px; }
.eyebrow { margin: 0 0 12px; font-size: 12px; letter-spacing: .22em; color: var(--accent); font-weight: 700; font-family: ui-monospace, "SF Mono", Menlo, monospace; }
.hero h1 { margin: 0; font-size: clamp(30px, 4.1vw, 46px); line-height: 1.2; letter-spacing: -.01em; font-weight: 800; }
.br-pc { display: none; }
@media (min-width: 821px) { .br-pc { display: inline; } }
.hero-lede { margin: 16px 0 0; max-width: 560px; color: var(--ink-2); font-size: 16px; }
.hero-actions { margin-top: 24px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.trust { font-size: 13px; color: var(--ink-2); }
a.btn-primary { display: inline-block; text-decoration: none; text-align: center; }

.hero-visual { background: var(--card); border: 1px solid var(--rule); box-shadow: var(--shadow); border-radius: 8px; padding: 14px; }
.hv-head { display: flex; justify-content: space-between; font-size: 11px; letter-spacing: .12em; color: var(--ink-2); font-family: ui-monospace, "SF Mono", Menlo, monospace; margin-bottom: 10px; }
.hv-tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.hv-tile { border-radius: 6px; padding: 10px 10px 8px; min-height: 84px; display: flex; flex-direction: column; justify-content: space-between; cursor: pointer; transition: transform .2s; text-align: left; border: 0; font: inherit; }
.hv-tile:hover { transform: translateY(-2px); }
.hv-tile .t { font-size: 12px; font-weight: 700; line-height: 1.3; }
.hv-tile .sw { display: flex; gap: 4px; margin-top: 8px; }
.hv-tile .sw i { flex: 1; height: 6px; border-radius: 3px; }
@media (max-width: 820px) { .hero { grid-template-columns: 1fr; gap: 24px; padding: 36px 0 24px; } .hv-tiles { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 480px) { .hv-tiles { grid-template-columns: repeat(2, 1fr); } }

main { max-width: 1040px; margin: 0 auto; padding: 0 20px 40px; }
main h2 { margin: 0 0 16px; font-size: 22px; letter-spacing: .01em; }

/* ── 入力 ─────────────────────────── */
.maker-wrap { scroll-margin-top: 70px; }
.maker-head { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 14px; font-size: 13px; color: var(--ink-2); }
.maker-head .step b { display: inline-grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; background: var(--ink); color: var(--card); font-size: 11px; margin-right: 6px; }
.maker {
  margin: 0;
  background: var(--card);
  border: 1px solid var(--rule);
  box-shadow: var(--shadow);
  padding: 18px 20px 16px;
  border-radius: 6px;
}
.row { display: flex; gap: 14px; flex-wrap: wrap; }
.row + .row { margin-top: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; flex: 1 1 220px; }
.field.grow { flex: 2 1 320px; }
.field.use { flex: 0 1 260px; }
.lbl { font-size: 12px; letter-spacing: .08em; font-weight: 700; }
input[type="text"] {
  font: inherit; font-size: 17px;
  padding: 11px 12px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  background: #fff;
  color: var(--ink);
  outline: none;
}
#trend { font-size: 20px; padding: 13px 14px; }
input[type="text"]:focus { box-shadow: 0 0 0 3px var(--accent-soft); border-color: var(--accent); }
.seg { display: flex; border: 1px solid var(--ink); border-radius: 4px; overflow: hidden; height: 46px; }
.seg label { flex: 1; display: flex; align-items: center; justify-content: center; cursor: pointer; font-size: 14px; position: relative; user-select: none; }
.seg label + label { border-left: 1px solid var(--ink); }
.seg input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.seg label:has(input:checked) { background: var(--ink); color: var(--card); }

.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.chip {
  font: inherit; font-size: 14px; font-weight: 700;
  padding: 7px 14px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
}
.chip:hover { border-color: var(--ink); background: #fff; }
.chip.on { border-color: var(--ink); background: var(--ink); color: var(--card); }
.use-trend { color: var(--accent); font-weight: 700; text-decoration: none; margin-right: 8px; }
.use-trend:hover { text-decoration: underline; }

.actions { align-items: center; margin-top: 16px; }
.btn-primary {
  font: inherit; font-weight: 700; font-size: 16px; letter-spacing: .04em;
  padding: 13px 26px;
  background: var(--accent); color: #fff;
  border: 1px solid var(--accent); border-radius: 4px;
  cursor: pointer;
  min-width: 180px;
}
.btn-primary.big { font-size: 17px; padding: 15px 30px; }
.btn-primary:hover { filter: brightness(.94); }
.btn-primary[disabled] { opacity: .55; cursor: progress; }
.status { color: var(--ink-2); font-size: 13px; }
.status.err { color: #8a1f1f; }

/* ── 作例・結果 ─────────────────────────── */
.book { margin-top: 44px; scroll-margin-top: 70px; }
.empty { border: 1px dashed var(--rule); border-radius: 8px; padding: 26px 20px; text-align: center; color: var(--ink-2); font-size: 14px; }
.empty p { margin: 12px 0 0; }
.empty-cards { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; max-width: 520px; margin: 0 auto; }
.empty-cards i { display: block; aspect-ratio: 3 / 1.4; border-radius: 4px; background: var(--paper-2); }
.empty-cards i:nth-child(2) { background: #e6dccb; } .empty-cards i:nth-child(4) { background: #ded8cc; } .empty-cards i:nth-child(6) { background: #e6dccb; }
.progress { margin: 4px 0 16px; }
.pg-steps { display: flex; gap: 18px; font-size: 13px; color: var(--ink-2); flex-wrap: wrap; }
.pg-steps span { display: inline-flex; align-items: center; gap: 6px; }
.pg-steps span::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--rule); }
.pg-steps span.done::before { background: var(--ink); }
.pg-steps span.now { color: var(--ink); font-weight: 700; }
.pg-steps span.now::before { background: var(--accent); }
.pg-bar { height: 4px; background: var(--paper-2); border-radius: 2px; margin-top: 8px; overflow: hidden; }
.pg-bar i { display: block; height: 100%; width: 0; background: var(--accent); transition: width 1s linear; }
.sc-head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; border-bottom: 1px solid var(--ink); padding-bottom: 8px; }
.sc-head h2 { margin: 0; font-size: 20px; letter-spacing: .02em; }
.asof { font-size: 12px; color: var(--ink-2); font-family: ui-monospace, "SF Mono", Menlo, monospace; }

.skeleton { background: var(--card); border: 1px solid var(--rule); aspect-ratio: 3 / 1.35; position: relative; overflow: hidden; }
.skeleton::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent, rgba(0,0,0,.05), transparent); animation: shimmer 1.4s infinite; }
@keyframes shimmer { from { transform: translateX(-100%); } to { transform: translateX(100%); } }

/* ── 見本帳のカード（結果と作例）─────────────────────────── */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 760px) { .grid { grid-template-columns: repeat(2, 1fr); gap: 10px; } }

.card { perspective: 1400px; outline: none; }
.flip { position: relative; transition: transform .55s cubic-bezier(.2,.7,.2,1); transform-style: preserve-3d; }
.card.flipped .flip { transform: rotateY(180deg); }
.face {
  background: var(--card);
  border: 1px solid var(--rule);
  box-shadow: var(--shadow);
  backface-visibility: hidden; -webkit-backface-visibility: hidden;
  display: flex; flex-direction: column;
  min-height: 100%;
}
.face.front { position: relative; }
.face.back { position: absolute; inset: 0; transform: rotateY(180deg); overflow: auto; padding: 10px 12px 12px; }
.no { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 11px; letter-spacing: .14em; color: var(--ink-2); padding: 8px 10px 0; }
.face.back .no { padding: 0 0 6px; }

.logo { flex: 1; padding: 10px; cursor: pointer; display: flex; align-items: center; justify-content: center; }
.logo svg { width: 100%; height: auto; display: block; box-shadow: 0 0 0 1px rgba(0,0,0,.06); }
.front-bar { display: flex; align-items: center; gap: 6px; padding: 0 10px 10px; }
.font-name { flex: 1; font-size: 11px; color: var(--ink-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dl {
  font: inherit; font-size: 11px; font-weight: 700; letter-spacing: .1em;
  padding: 5px 9px; border: 1px solid var(--ink); background: transparent; color: var(--ink);
  border-radius: 2px; cursor: pointer;
}
.dl:hover { background: var(--ink); color: var(--card); }

.recipe { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 3px 10px; font-size: 12px; }
.recipe dt { color: var(--ink-2); letter-spacing: .06em; }
.recipe dd { margin: 0; }
.recipe .sw { display: inline-block; width: 11px; height: 11px; vertical-align: -1px; border: 1px solid rgba(0,0,0,.2); margin-right: 5px; }
.tweaks { display: flex; gap: 6px; flex-wrap: wrap; margin: 10px 0; }
.tweaks button {
  font: inherit; font-size: 12px; padding: 5px 10px;
  border: 1px solid var(--ink); background: transparent; color: var(--ink); border-radius: 2px; cursor: pointer;
}
.tweaks button:active { background: var(--ink); color: var(--card); }
.seen { font-size: 12px; border-top: 1px dashed var(--rule); padding-top: 8px; }
.seen h4 { margin: 0 0 3px; font-size: 11px; letter-spacing: .1em; color: var(--ink-2); }
.seen ul { margin: 0 0 8px; padding-left: 16px; }
.seen .src { color: var(--ink-2); font-size: 11px; }

.hint { color: var(--ink-2); font-size: 13px; margin-top: 14px; }


/* ── 使い方・仕組み・FAQ ─────────────────────────── */
.steps { margin-top: 64px; }
.steps-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.steps-list li { background: var(--card); border: 1px solid var(--rule); border-radius: 8px; padding: 18px 18px 16px; }
.steps-list .n { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 800; font-size: 14px; }
.steps-list h3 { margin: 12px 0 6px; font-size: 16px; }
.steps-list p { margin: 0; color: var(--ink-2); font-size: 14px; }
.how { margin-top: 56px; border-top: 1px solid var(--ink); padding-top: 26px; }
.how-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.how-item h3 { margin: 0 0 6px; font-size: 16px; }
.how-item p { margin: 0; color: var(--ink-2); font-size: 14px; }
.faq { margin-top: 56px; border-top: 1px solid var(--ink); padding-top: 26px; }
.faq details { border-bottom: 1px solid var(--rule); padding: 12px 0; }
.faq summary { cursor: pointer; font-weight: 700; font-size: 15px; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq summary::after { content: "+"; color: var(--ink-2); font-weight: 400; font-size: 18px; }
.faq details[open] summary::after { content: "−"; }
.faq p { margin: 10px 0 0; color: var(--ink-2); font-size: 14px; }
@media (max-width: 760px) { .steps-list, .how-grid { grid-template-columns: 1fr; gap: 14px; } }

/* ── 脚 ─────────────────────────── */
.foot { border-top: 1px solid var(--rule); margin-top: 56px; }
.foot-in { max-width: 1040px; margin: 0 auto; padding: 22px 20px 40px; display: flex; gap: 18px; align-items: center; flex-wrap: wrap; font-size: 13px; color: var(--ink-2); }
.foot-links { display: flex; gap: 16px; flex: 1; }
.foot-links a { color: var(--ink-2); text-decoration: none; }
.foot-links a:hover { color: var(--ink); }
.copy { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 12px; }