:root {
  --bg: #f6f3ee;
  --paper: #fbf9f6;
  --ink: #1a1612;
  --muted: #6b645c;
  --line: #e4ddd4;
  --wash: #efeae3;
  --accent: #c41e3a;
  --radius: 2px;
  --serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", "ui-monospace", "Menlo", "Consolas", monospace;
  --wrap: 1120px;
  --pad: 72px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; line-height: 1.7; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
.skip {
  position: absolute;
  left: 12px;
  top: -40px;
  background: var(--paper);
  padding: 8px 12px;
}
.skip:focus { top: 12px; }

.wrap { width: min(var(--wrap), calc(100% - 40px)); margin: 0 auto; }
.serif { font-family: var(--serif); }
.display {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 36px;
  line-height: 1.18;
  letter-spacing: -0.02em;
}
.hero .display { font-size: 56px; }
.lede { margin: 18px 0 0; max-width: 38rem; color: #3f3832; font-size: 16px; line-height: 1.75; }
.muted { color: var(--muted); }
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.22em;
}
.eyebrow i { width: 1px; height: 14px; background: var(--accent); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(246, 243, 238, 0.92);
  backdrop-filter: blur(10px);
}
.site-header.is-scrolled { box-shadow: inset 0 -1px 0 var(--line); }
.header-bar {
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 68px;
}
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.mark {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: #fff;
  font-family: var(--serif);
  font-size: 14px;
}
.brand-name { display: block; font-size: 15px; letter-spacing: 0.12em; }
.brand-sub { display: block; margin-top: 1px; color: var(--muted); font-size: 11px; letter-spacing: 0.14em; }
.desk-nav { display: flex; align-items: center; gap: 22px; }
.nav-link {
  position: relative;
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 0.06em;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 0;
  height: 1px;
  background: var(--ink);
  transition: width 0.2s ease;
}
.nav-link:hover::after, .nav-link.is-current::after { width: 14px; }
.nav-link.is-current { color: var(--ink); }
.nav-toggle { display: none; position: relative; }
.nav-toggle summary {
  list-style: none;
  cursor: pointer;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 6px 12px;
  font-size: 13px;
}
.nav-toggle summary::-webkit-details-marker { display: none; }
.nav-toggle nav {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: 196px;
  padding: 8px 16px 14px;
  background: var(--paper);
  border: 1px solid var(--line);
}
.nav-toggle .nav-link { display: block; padding: 9px 0; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  letter-spacing: 0.04em;
  transition: background 0.15s ease, color 0.15s ease;
}
.btn:hover { background: transparent; color: var(--ink); }
.btn-line { background: transparent; color: var(--ink); }
.btn-line:hover { background: var(--ink); color: #fff; }
.btn-light { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn-light:hover { background: transparent; color: #fff; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }

.hero { display: grid; grid-template-columns: 1.28fr 0.92fr; gap: 48px; align-items: center; padding: 52px 0 20px; }
.hero .display { max-width: 11em; }
.cover-photo { position: relative; margin: 0; border: 1px solid var(--ink); background: var(--ink); }
.cover-photo img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}
.cover-photo figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 10px;
  background: rgba(246, 243, 238, 0.92);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.trust { margin: 0 auto 8px; padding-top: 18px; border-top: 1px solid var(--line); }
.trust ul { display: flex; flex-wrap: wrap; gap: 8px 0; margin: 0; padding: 0; list-style: none; }
.trust li { color: var(--ink); font-size: 14px; letter-spacing: 0.04em; }
.trust li + li::before { content: ""; display: inline-block; width: 1px; height: 12px; margin: 0 14px; background: var(--line); vertical-align: -1px; }
.trust-legal { margin: 10px 0 0; color: var(--muted); font-size: 12px; }

.section { padding: var(--pad) 0; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.sec-kicker { display: flex; align-items: center; gap: 12px; margin: 0 0 10px; color: var(--muted); font-family: var(--mono); font-size: 12px; letter-spacing: 0.16em; }
.sec-kicker b { width: 28px; height: 1px; background: var(--ink); font-weight: 400; }
.sec-title { margin: 0; font-size: 32px; font-weight: 600; letter-spacing: -0.02em; line-height: 1.25; }
.sec-note { margin: 8px 0 0; max-width: 36rem; color: var(--muted); font-size: 15px; }
.text-link { font-size: 14px; border-bottom: 1px solid var(--ink); padding-bottom: 2px; }

.scene-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.scene {
  display: block;
  min-height: 148px;
  padding: 0 8px 16px 0;
}
.scene:hover .scene-photo { border-color: var(--accent); }
.scene-photo, .scene-fallback {
  display: block;
  aspect-ratio: 4 / 3;
  margin-bottom: 12px;
  overflow: hidden;
  border: 1px solid var(--ink);
  background: var(--wash);
}
.scene-photo img { width: 100%; height: 100%; object-fit: cover; }
.scene-fallback { display: grid; place-items: center; }
.scene-fallback .ico { width: 32px; height: 32px; }
.scene-no { color: var(--muted); font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; }
.scene h3 { margin: 12px 0 0; font-size: 18px; font-weight: 600; }
.scene p { margin: 8px 0 0; color: var(--muted); font-size: 14px; line-height: 1.65; }
.scene-go { display: inline-block; margin-top: 12px; font-size: 13px; letter-spacing: 0.08em; }
.scene:hover .scene-go { box-shadow: inset 0 -1px 0 var(--accent); }

.pull { padding: 96px 0 88px; }
.pull-rule { width: 72px; height: 1px; margin: 0 0 22px; background: var(--ink); }
.pull p { max-width: 14em; margin: 0; font-family: var(--serif); font-size: 36px; line-height: 1.35; }

.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px 40px; }
.cap {
  position: relative;
  display: block;
  min-height: 168px;
  padding: 4px 8px 18px 16px;
  border-bottom: 1px solid var(--line);
  transition: transform 0.18s ease;
}
.cap::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 18px;
  width: 1px;
  background: transparent;
}
.cap:hover { transform: translateY(-2px); }
.cap:hover::before { background: var(--accent); }
.cap-no {
  position: absolute;
  right: 0;
  top: -6px;
  font-family: var(--mono);
  font-size: 44px;
  line-height: 1;
  color: rgba(26, 22, 18, 0.08);
}
.ico { width: 24px; height: 24px; display: block; }
.cap h3, .cap-body h2 { position: relative; margin: 14px 0 0; font-size: 18px; font-weight: 600; }
.cap p, .cap-body p { position: relative; margin: 8px 0 0; color: var(--muted); font-size: 14px; line-height: 1.65; }
.cap p {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.band { background: var(--ink); color: #fff; }
.band .sec-kicker { color: #b7aea4; }
.band .sec-kicker b { background: var(--paper); }
.band .sec-note, .band .step p { color: #d4cdc4; }
.band .step::after { background: #3a342e; }
.band .text-link { color: #fff; border-bottom-color: #fff; }
.sheet { background: var(--wash); }
.step-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin: 8px 0 0; padding: 0; list-style: none; }
.step { position: relative; padding-right: 16px; }
.step-no { display: inline-block; margin-bottom: 18px; color: var(--accent); font-family: var(--mono); font-size: 13px; letter-spacing: 0.14em; }
.step::after {
  content: "";
  position: absolute;
  top: 7px;
  left: 34px;
  width: calc(100% - 18px);
  height: 1px;
  background: var(--line);
}
.step:last-child::after { display: none; }
.step h2, .step h3 { margin: 0; font-size: 18px; font-weight: 600; }
.step p { margin: 8px 0 0; color: var(--muted); font-size: 14px; line-height: 1.65; }

.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.case-card { display: block; }
.frame {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--wash);
  border: 1px solid var(--ink);
}
.frame img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: top; }
.case-domain { margin: 8px 0 0; color: var(--muted); font-family: var(--mono); font-size: 12px; }
.plate { max-width: 720px; margin: 8px 0 28px; }
.plate img { display: block; width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border: 1px solid var(--ink); }
.plate figcaption { margin-top: 8px; color: var(--muted); font-size: 12px; letter-spacing: 0.08em; }
.case-kind { margin: 14px 0 0; color: var(--muted); font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em; }
.case-card h2, .case-card h3 { margin: 4px 0 0; font-size: 20px; font-weight: 600; }
.case-facts { margin: 12px 0 0; }
.case-facts div { display: grid; grid-template-columns: 2.5em 1fr; gap: 8px; margin-top: 4px; }
.case-facts dt { color: var(--muted); font-size: 13px; }
.case-facts dd { margin: 0; font-size: 14px; }
.case-card p { margin: 6px 0 0; color: var(--muted); font-size: 14px; }
.case-card:hover .frame { border-color: var(--ink); }

.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-size: 17px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--muted); font-family: var(--mono); }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 18px; max-width: 42rem; color: var(--muted); font-size: 15px; }

.cta-band { background: var(--ink); color: #fff; }
.cta-band .wrap { padding: 72px 0; }
.cta-band h2 { margin: 0; max-width: 12em; font-size: 40px; font-weight: 600; line-height: 1.25; letter-spacing: -0.02em; }
.cta-band p { margin: 16px 0 0; color: #d4cdc4; font-size: 15px; }

.site-footer { border-top: 1px solid var(--line); padding-top: 48px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr auto; gap: 32px; }
.foot-grid p { margin: 10px 0 0; color: var(--muted); font-size: 14px; line-height: 1.7; }
.foot-label { margin: 0; font-size: 13px; letter-spacing: 0.12em; }
.foot-nav { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; margin-top: 12px; }
.foot-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  width: min(var(--wrap), calc(100% - 40px));
  margin: 36px auto 0;
  padding: 14px 0 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}
.foot-legal p { margin: 0; }
.foot-legal a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }
.foot-legal a:hover { color: var(--ink); }
.sys-note { letter-spacing: 0.04em; }

.page { padding: 56px 0 80px; }
.page-head { max-width: 40rem; margin-bottom: 36px; }
.page-head .display { margin-top: 12px; }
.rich { max-width: 40rem; font-size: 16px; line-height: 1.75; }
.rich p { margin: 0.9rem 0; }
.rich h2 { margin: 1.6rem 0 0.4rem; font-size: 22px; }
.rich ul { margin: 0.6rem 0; padding-left: 1.2rem; }
.rich li { margin: 0.3rem 0; }
.rich a { border-bottom: 1px solid var(--ink); }
.meta { margin: 12px 0 0; color: var(--muted); font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; }

.cap-list { display: grid; gap: 8px; }
.cap-row {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 8px 16px;
  padding: 22px 0 22px 16px;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.cap-row::before { content: ""; position: absolute; left: 0; top: 22px; bottom: 22px; width: 1px; background: var(--line); }
.cap-row .ico { grid-row: 1 / span 2; margin-top: 4px; }
.cap-no-sm { color: var(--muted); font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em; }

.offer-grid, .case-index { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.offer {
  display: flex;
  flex-direction: column;
  min-height: 230px;
  padding: 22px 18px 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 2px solid var(--ink);
}
.offer:hover { border-top-color: var(--accent); }
.offer h2 { margin: 0; font-size: 24px; }
.offer p { margin: 14px 0 0; flex: 1; color: var(--muted); font-size: 14px; }
.more { margin-top: 20px; font-size: 13px; letter-spacing: 0.08em; }

.post-list { border-top: 1px solid var(--line); }
.post-row { display: grid; grid-template-columns: 120px 1fr; gap: 24px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.post-row time { color: var(--muted); font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; }
.post-row h2 { margin: 0; font-size: 22px; font-weight: 600; }
.post-row h2 a:hover { box-shadow: inset 0 -1px 0 var(--ink); }
.post-row p { margin: 8px 0 0; color: var(--muted); font-size: 15px; }

.contact-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 56px; align-items: start; }
.form { display: grid; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { font-size: 14px; }
.field input, .field textarea, .field select {
  display: block;
  width: 100%;
  margin-top: 6px;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}
.field textarea { min-height: 148px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: 1px solid var(--accent);
  border-color: var(--accent);
}
.err { margin: 6px 0 0; font-size: 13px; color: var(--accent); }
.note {
  margin: 0 0 8px;
  padding: 12px 14px;
  border: 1px solid var(--ink);
  background: var(--paper);
  font-size: 14px;
}
.hp { position: absolute; left: -9999px; width: 0; height: 0; overflow: hidden; }
.empty { padding: 28px 0; color: var(--muted); }

@media (max-width: 900px) {
  :root { --pad: 52px; }
  .desk-nav, .header-cta { display: none; }
  .nav-toggle { display: block; }
  .hero, .contact-grid, .foot-grid, .cap-grid, .step-row, .case-grid, .offer-grid, .case-index { grid-template-columns: 1fr; }
  .scene-row { grid-template-columns: 1fr 1fr; }
  .cover-photo img { aspect-ratio: 16 / 10; }
  .pull p { font-size: 28px; }
  .step::after { display: none; }
  .post-row { grid-template-columns: 1fr; gap: 6px; }
  .form-row { grid-template-columns: 1fr; }
  .display, .hero .display { font-size: 34px; }
  .sec-title, .cta-band h2, .cover-quote { font-size: 28px; }
  .cover { min-height: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .cap, .btn, .nav-link::after { transition: none; }
  .cap:hover { transform: none; }
}
@media (prefers-reduced-motion: no-preference) {
  .hero-copy, .cover { animation: rise 0.5s ease both; }
  .cover { animation-delay: 0.08s; }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}