/* ==========================================================================
   合同会社CORDIA — style.css
   色・書体・余白はここのトークンで一元管理しています。
   ========================================================================== */
:root {
  --bg: #F5F4EF;
  --bg-alt: #EBEAE3;
  --surface: #FFFFFF;
  --ink: #1C1F23;
  --ink-2: #474C54;
  --ink-3: #7A8089;
  --line: #D6D5CC;
  --line-strong: #B5B3A8;
  --navy: #0F3A40;
  --navy-2: #185159;
  --on-navy: #F5F4EF;
  --on-navy-muted: #B8CDCC;
  --accent: #8F6212;
  --accent-on-navy: #E2B864;
  --error: #B3261E;

  --font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", YuGothic, Meiryo, sans-serif;
  --font-serif: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;

  --gutter: clamp(20px, 5vw, 56px);
  --wrap: 1200px;
  --sec: clamp(88px, 12vw, 168px);
  --sec-sm: clamp(56px, 8vw, 104px);
  --header-h: 76px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.9;
  letter-spacing: .04em;
  font-feature-settings: "palt" 0;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.45; }
p, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-underline-offset: .25em; text-decoration-thickness: 1px; }
img, svg { display: block; max-width: 100%; }
strong { font-weight: 700; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
main:focus { outline: none; }
[hidden] { display: none !important; }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.wrap { width: 100%; max-width: calc(var(--wrap) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }
.br-pc { display: none; }
@media (min-width: 900px) { .br-pc { display: inline; } }

.skip-link {
  position: absolute; left: 16px; top: -100px; z-index: 100;
  background: var(--navy); color: var(--on-navy); padding: 10px 18px; text-decoration: none;
}
.skip-link:focus { top: 12px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(246, 245, 241, .92);
  backdrop-filter: saturate(1.2) blur(10px);
  -webkit-backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease);
}
.site-header.is-scrolled { border-bottom-color: var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: var(--header-h); gap: 24px; }
.brand { display: inline-flex; align-items: baseline; gap: 14px; text-decoration: none; }
.brand-mark { font-family: var(--font-serif); font-weight: 600; font-size: 1.5rem; letter-spacing: .32em; line-height: 1; }
.brand-name { font-size: .75rem; color: var(--ink-2); letter-spacing: .08em; }

.site-nav ul { display: flex; align-items: center; gap: clamp(16px, 2.2vw, 34px); }
.site-nav a { font-size: .875rem; text-decoration: none; position: relative; padding-block: 6px; letter-spacing: .08em; }
.site-nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: currentColor; transform: scaleX(0); transform-origin: left; transition: transform .35s var(--ease);
}
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { transform: scaleX(1); }
.site-nav a[aria-current="page"] { color: var(--accent); }
.site-nav .nav-contact a {
  display: inline-block; padding: 10px 22px; background: var(--navy); color: var(--on-navy);
  transition: background-color .25s var(--ease);
}
.site-nav .nav-contact a::after { display: none; }
.site-nav .nav-contact a:hover { background: var(--navy-2); }
.site-nav .nav-contact a[aria-current="page"] { color: var(--on-navy); background: var(--accent); }

.nav-toggle { display: none; }

@media (max-width: 959px) {
  :root { --header-h: 64px; }
  .brand-mark { font-size: 1.25rem; }
  .brand-name { display: none; }
  .js .nav-toggle {
    display: inline-flex; align-items: center; gap: 10px;
    background: none; border: 0; padding: 10px 4px; margin-right: -4px; cursor: pointer; color: var(--ink);
    font: inherit; font-size: .8125rem; letter-spacing: .1em;
  }
  .nav-toggle-lines { position: relative; width: 22px; height: 10px; }
  .nav-toggle-lines::before, .nav-toggle-lines::after {
    content: ""; position: absolute; left: 0; width: 100%; height: 1.5px; background: currentColor;
    transition: transform .3s var(--ease), top .3s var(--ease);
  }
  .nav-toggle-lines::before { top: 0; }
  .nav-toggle-lines::after { top: 8px; }
  .nav-toggle[aria-expanded="true"] .nav-toggle-lines::before { top: 4px; transform: rotate(20deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle-lines::after { top: 4px; transform: rotate(-20deg); }

  .header-inner { flex-wrap: wrap; }
  .site-nav { width: 100%; padding-bottom: 16px; }
  .site-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav li { border-top: 1px solid var(--line); }
  .site-nav a { display: block; padding: 14px 0; font-size: 1rem; }
  .site-nav a::after { display: none; }
  .site-nav .nav-contact { border-top: 0; padding-top: 16px; }
  .site-nav .nav-contact a { text-align: center; padding: 16px; }

  .js .site-nav {
    position: fixed; inset: var(--header-h) 0 0 0; width: auto;
    background: var(--bg); padding: 8px var(--gutter) 40px; overflow-y: auto;
    visibility: hidden; opacity: 0; transform: translateY(-8px);
    transition: opacity .3s var(--ease), transform .3s var(--ease), visibility 0s linear .3s;
  }
  .js .site-nav.is-open { visibility: visible; opacity: 1; transform: none; transition-delay: 0s; }
  .js body.nav-open { overflow: hidden; }
}

/* ---------- buttons & links ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: space-between; gap: 28px;
  min-height: 56px; padding: 0 26px 0 30px; text-decoration: none; font-size: .9375rem; letter-spacing: .08em;
  border: 1px solid transparent; cursor: pointer; font-family: inherit;
  transition: background-color .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.btn-primary { background: var(--navy); color: var(--on-navy); }
.btn-primary:hover { background: var(--accent); }
.btn-ghost { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-ghost:hover { background: var(--ink); color: var(--bg); }
.btn-light { background: var(--on-navy); color: var(--navy); }
.btn-light:hover { background: var(--accent); color: #fff; }
.btn-arrow {
  position: relative; display: inline-block; width: 22px; height: 1px; background: currentColor; flex: none;
  transition: transform .3s var(--ease);
}
.btn-arrow::after {
  content: ""; position: absolute; right: 0; top: -3px; width: 7px; height: 7px;
  border-top: 1px solid currentColor; border-right: 1px solid currentColor; transform: rotate(45deg);
}
.btn:hover .btn-arrow, .text-link:hover .btn-arrow, .svc-row:hover .btn-arrow { transform: translateX(5px); }
.text-link {
  display: inline-flex; align-items: center; gap: 14px; font-size: .9375rem; text-decoration: none;
  border-bottom: 1px solid var(--line-strong); padding-bottom: 6px;
  transition: border-color .25s var(--ease), color .25s var(--ease);
}
.text-link:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- section heads ---------- */
.section { padding-block: var(--sec); }
.section-sm { padding-block: var(--sec-sm); }
.sec-en {
  display: flex; align-items: center; gap: 12px;
  font-size: .75rem; letter-spacing: .24em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 18px;
}
.sec-en::before { content: ""; width: 24px; height: 1px; background: var(--accent); }
.sec-en-light { color: var(--on-navy-muted); }
.sec-en-light::before { background: var(--accent-on-navy); }
.sec-title { font-family: var(--font-serif); font-size: clamp(1.75rem, 3.4vw, 2.625rem); letter-spacing: .08em; }
.sec-intro { margin-top: 20px; color: var(--ink-2); max-width: 36em; }
.sec-head { margin-bottom: clamp(48px, 6vw, 80px); }
.sub-title { font-family: var(--font-serif); font-size: 1.25rem; letter-spacing: .08em; margin-bottom: 24px; }
.more { margin-top: 48px; }

/* ---------- hero ---------- */
.hero { padding-top: clamp(32px, 6vw, 72px); padding-bottom: clamp(48px, 6vw, 72px); }
.hero-inner { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); align-items: center; gap: clamp(32px, 5vw, 72px); }
.hero-eyebrow {
  display: inline-block; font-size: .8125rem; letter-spacing: .16em; color: var(--accent);
  border: 1px solid currentColor; padding: 4px 14px; margin-bottom: 32px;
}
.hero-title {
  font-family: var(--font-serif); font-weight: 600;
  font-size: clamp(2rem, 3.8vw, 3.5rem); line-height: 1.4; letter-spacing: .06em;
}
.hl-line { display: block; }
.hl-ph { display: inline-block; }
.hero-lead { margin-top: 32px; max-width: 32em; color: var(--ink-2); font-size: 1rem; line-height: 2; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 44px; }
.hero-visual { position: relative; }
.hero-figure { width: 100%; height: auto; }

.g-grid { fill: none; stroke: var(--line); stroke-width: .6; }
.g-label { font-family: var(--font-sans); font-size: 11px; letter-spacing: .12em; fill: var(--ink-2); }
.g-frame { fill: var(--bg); stroke: var(--ink); stroke-width: 1.2; }
.g-frame-line { stroke: var(--ink); stroke-width: 1; }
.g-wire { fill: none; stroke: var(--ink-2); stroke-width: 1; stroke-dasharray: 4 3; }
.g-divider { stroke: var(--accent); stroke-width: 1.5; }
.g-phone { fill: var(--surface); stroke: var(--ink); stroke-width: 1.4; }
.g-phone-notch { stroke: var(--ink); stroke-width: 3; stroke-linecap: round; }
.g-thin-light { stroke: var(--on-navy); stroke-width: 1; opacity: .6; }
.f-ink { fill: var(--ink); }
.f-ink2 { fill: var(--ink-2); }
.f-ink3 { fill: var(--ink-3); }
.f-navy { fill: var(--navy); }
.f-accent { fill: var(--accent); }
.f-surface { fill: var(--surface); stroke: var(--line); stroke-width: 1; }

.hero-index {
  margin-top: clamp(48px, 6vw, 80px); padding-top: 28px; border-top: 1px solid var(--line);
  display: grid; grid-template-columns: 11em 1fr; gap: 24px;
}
.hero-index-label { font-size: .8125rem; color: var(--ink-2); letter-spacing: .1em; }
.hero-index-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(16.5em, 1fr)); gap: 10px 32px; font-size: .875rem; }
.hero-index-list li { display: flex; align-items: baseline; }
.hero-index-list li::before { content: ""; width: 8px; height: 1px; background: var(--accent); margin-right: 10px; flex: none; transform: translateY(-.3em); }
.hero-index-list a { text-decoration: none; }
.hero-index-list a:hover { color: var(--accent); text-decoration: underline; }

/* ---------- statement ---------- */
.statement { background: var(--surface); padding-block: var(--sec); border-block: 1px solid var(--line); }
.statement-inner { display: grid; grid-template-columns: 1fr 1fr; column-gap: clamp(40px, 7vw, 120px); }
.statement-inner .sec-en { grid-column: 1 / -1; }
.statement-title { font-family: var(--font-serif); font-size: clamp(1.625rem, 3.2vw, 2.5rem); line-height: 1.6; letter-spacing: .08em; }
.statement-body { display: grid; gap: 1.4em; color: var(--ink-2); padding-top: .6em; }

/* ---------- services (home) ---------- */
.svc-group { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2.2fr); gap: clamp(24px, 4vw, 64px); padding-block: 40px; border-top: 1px solid var(--ink); }
.svc-group + .svc-group { border-top-color: var(--line-strong); }
.svc-group-en { font-size: .75rem; letter-spacing: .24em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
.svc-group-title { font-family: var(--font-serif); font-size: 1.375rem; letter-spacing: .08em; }
.svc-group-summary { font-size: .875rem; color: var(--ink-2); margin-top: 12px; }
.svc-list li + li { border-top: 1px solid var(--line); }
.svc-row {
  display: grid; grid-template-columns: 3em minmax(0, 17.5em) minmax(0, 1fr) 32px; align-items: baseline; gap: 20px;
  padding: 22px 0; text-decoration: none; transition: color .25s var(--ease);
}
.svc-row:hover { color: var(--accent); }
.svc-no { font-family: var(--font-serif); font-size: .9375rem; color: var(--ink-3); letter-spacing: .1em; }
.svc-name { font-weight: 500; font-size: 1.0625rem; letter-spacing: .06em; }
.svc-short { font-size: .875rem; color: var(--ink-2); line-height: 1.8; }
.svc-go { align-self: center; justify-self: end; }

/* ---------- problems ---------- */
.problems { background: var(--navy); color: var(--on-navy); }
.problems .sec-intro { color: var(--on-navy-muted); }
.problem-list { display: grid; grid-template-columns: 1fr 1fr; column-gap: clamp(32px, 5vw, 80px); }
.problem { padding: 26px 0; border-top: 1px solid rgba(246, 245, 241, .18); display: grid; gap: 10px; }
.problem-q { font-size: 1.0625rem; letter-spacing: .05em; position: relative; padding-left: 1.6em; }
.problem-q::before { content: ""; position: absolute; left: 0; top: .95em; width: .9em; height: 1px; background: var(--accent-on-navy); }
.problem-a { padding-left: 1.6em; display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: .875rem; }
.problem-a a { color: var(--on-navy-muted); text-decoration: underline; text-decoration-color: rgba(188, 195, 207, .4); }
.problem-a a::before { content: "→ "; }
.problem-a a:hover { color: var(--on-navy); text-decoration-color: var(--accent-on-navy); }

/* ---------- approach (home) ---------- */
.approach-home-inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: clamp(40px, 6vw, 96px); align-items: start; }
.approach-home .sec-head { position: sticky; top: calc(var(--header-h) + 40px); }
.approach-home .sec-head p + p { margin-top: 32px; }
.principle-mini-list { counter-reset: none; }
.principle-mini { display: grid; grid-template-columns: 4.5rem 1fr; column-gap: 24px; padding: 32px 0; border-top: 1px solid var(--line); }
.principle-mini:last-child { border-bottom: 1px solid var(--line); }
.pm-no { grid-row: span 2; font-family: var(--font-serif); font-size: 2.5rem; line-height: 1; color: var(--accent); letter-spacing: .02em; }
.pm-title { font-family: var(--font-serif); font-size: 1.25rem; letter-spacing: .06em; margin-bottom: 8px; }
.principle-mini p { color: var(--ink-2); font-size: .9375rem; }

/* ---------- process (home) ---------- */
.process-home { background: var(--bg-alt); }
.step-line { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); position: relative; }
.step-line::before { content: ""; position: absolute; left: 0; right: 0; top: 7px; height: 1px; background: var(--line-strong); }
.step-line li { position: relative; padding-top: 36px; padding-right: 12px; }
.step-line li::before {
  content: ""; position: absolute; left: 0; top: 0; width: 15px; height: 15px; border-radius: 50%;
  background: var(--bg-alt); border: 1px solid var(--ink);
}
.step-line li:last-child::before { background: var(--accent); border-color: var(--accent); }
.step-no { display: block; font-family: var(--font-serif); font-size: .875rem; color: var(--ink-3); letter-spacing: .1em; }
.step-name { display: block; font-weight: 500; font-size: 1rem; margin-top: 6px; letter-spacing: .04em; }

/* ---------- company (home) / info list ---------- */
.company-home-inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: clamp(40px, 6vw, 96px); }
.company-home .sec-head p { margin-top: 32px; }
.info-list > div { display: grid; grid-template-columns: 9em 1fr; gap: 16px; padding: 22px 0; border-top: 1px solid var(--line); }
.info-list > div:last-child { border-bottom: 1px solid var(--line); }
.info-list dt { color: var(--ink-2); font-size: .875rem; letter-spacing: .1em; padding-top: .1em; }
.info-list-lg > div { padding: 28px 0; }
.dd-sub { display: block; font-size: .8125rem; color: var(--ink-2); margin-top: 2px; }
.dd-lead { margin-bottom: 12px; }
.biz-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 32px; font-size: .9375rem; }
.biz-list li { position: relative; padding-left: 1.1em; }
.biz-list li::before { content: ""; position: absolute; left: 0; top: .95em; width: 6px; height: 1px; background: var(--accent); }
.biz-list a { text-decoration: none; }
.biz-list a:hover { text-decoration: underline; color: var(--accent); }
.purpose-list { list-style: decimal; padding-left: 1.5em; }
.company-wrap { max-width: calc(960px + var(--gutter) * 2); }

/* ---------- CTA ---------- */
.cta { background: var(--navy); color: var(--on-navy); padding-block: clamp(72px, 10vw, 128px); position: relative; overflow: hidden; }
.cta::after {
  content: ""; position: absolute; right: -6vw; top: 50%; width: min(44vw, 520px); aspect-ratio: 1;
  border: 1px solid rgba(246, 245, 241, .12); border-radius: 50%; transform: translateY(-50%); pointer-events: none;
}
.cta-inner { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; position: relative; z-index: 1; }
.cta-title { font-family: var(--font-serif); font-size: clamp(1.5rem, 3vw, 2.25rem); line-height: 1.6; letter-spacing: .08em; }
.cta-text { margin-top: 20px; color: var(--on-navy-muted); font-size: .9375rem; }
.cta .btn { flex: none; }

/* ---------- footer ---------- */
.site-footer { background: #0A2A2F; color: var(--on-navy-muted); font-size: .8125rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 48px; padding-block: 64px 48px; }
.footer-mark { font-family: var(--font-serif); color: var(--on-navy); font-size: 1.375rem; letter-spacing: .32em; margin-bottom: 16px; }
.footer-name { color: var(--on-navy); font-size: .875rem; }
.footer-desc, .footer-addr { margin-top: 4px; }
.footer-nav ul { display: grid; grid-template-columns: repeat(2, auto); gap: 10px 48px; }
.footer-nav a { text-decoration: none; }
.footer-nav a:hover { color: var(--on-navy); text-decoration: underline; }
.footer-bottom p { border-top: 1px solid rgba(246, 245, 241, .12); padding-block: 20px; }

/* ---------- page header ---------- */
.page-header { padding-block: clamp(40px, 7vw, 96px) clamp(48px, 7vw, 88px); border-bottom: 1px solid var(--line); }
.breadcrumb ol { display: flex; flex-wrap: wrap; font-size: .75rem; color: var(--ink-2); margin-bottom: clamp(32px, 5vw, 56px); }
.breadcrumb li:not(:last-child)::after { content: "/"; margin-inline: 10px; color: var(--line-strong); }
.page-title { font-family: var(--font-serif); font-size: clamp(2rem, 4.6vw, 3.5rem); letter-spacing: .08em; line-height: 1.35; }
.page-lead { margin-top: 24px; max-width: 38em; color: var(--ink-2); }

/* ---------- services page ---------- */
.svc-overview-inner { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: clamp(40px, 6vw, 96px); }
.svc-toc > li { padding: 18px 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: 11em 1fr; gap: 16px; }
.svc-toc > li > a { font-family: var(--font-serif); font-weight: 600; text-decoration: none; letter-spacing: .06em; }
.svc-toc ul { display: grid; gap: 4px; font-size: .9375rem; }
.svc-toc ul a { text-decoration: none; display: inline-flex; gap: 12px; }
.svc-toc ul a span { color: var(--ink-3); font-family: var(--font-serif); }
.svc-toc a:hover { color: var(--accent); }
.fee-note { background: var(--surface); border: 1px solid var(--line); padding: clamp(28px, 4vw, 44px); align-self: start; }
.fee-note p + p { margin-top: 24px; }
.fee-note p { color: var(--ink-2); font-size: .9375rem; }
.fee-note strong { color: var(--ink); }

.svc-block { padding-block: var(--sec-sm); }
.svc-block + .svc-block { border-top: 1px solid var(--line); }
.svc-block-head { margin-bottom: 40px; }
.svc-detail { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: clamp(24px, 5vw, 80px); padding-block: clamp(40px, 5vw, 64px); border-top: 1px solid var(--ink); scroll-margin-top: calc(var(--header-h) + 16px); }
.svc-detail + .svc-detail { border-top-color: var(--line-strong); }
.svc-detail-head { align-self: start; position: sticky; top: calc(var(--header-h) + 32px); }
.svc-detail-no { font-family: var(--font-serif); font-size: 3rem; line-height: 1; color: var(--accent); margin-bottom: 16px; }
.svc-detail-en { font-size: .75rem; letter-spacing: .2em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 6px; }
.svc-detail-title { font-family: var(--font-serif); font-size: clamp(1.375rem, 2.2vw, 1.75rem); letter-spacing: .06em; }
.svc-detail-short { margin-top: 16px; color: var(--ink-2); font-size: .9375rem; }
.svc-detail-body { display: grid; grid-template-columns: 1fr 1fr; gap: 32px clamp(24px, 4vw, 56px); }
.svc-detail-body h4 { font-size: .8125rem; letter-spacing: .14em; color: var(--ink-2); font-weight: 500; padding-bottom: 12px; margin-bottom: 14px; border-bottom: 1px solid var(--line); }
.svc-deliver { grid-column: 1 / -1; background: var(--surface); border: 1px solid var(--line); padding: clamp(24px, 3vw, 36px); }
.svc-extra { margin-top: 18px; font-size: .875rem; color: var(--ink-2); }
.svc-scope { margin-top: 18px; padding-top: 16px; border-top: 1px dashed var(--line-strong); font-size: .875rem; color: var(--ink-2); }
.dot-list { display: grid; gap: 8px; }
.dot-list li { position: relative; padding-left: 1.2em; font-size: .9375rem; line-height: 1.8; }
.dot-list li::before { content: ""; position: absolute; left: 0; top: .82em; width: 5px; height: 5px; border-radius: 50%; background: var(--ink-3); }
.svc-deliver .dot-list li::before { background: var(--accent); }

/* ---------- approach page ---------- */
.principle-list { display: grid; }
.principle {
  display: grid; grid-template-columns: 7rem minmax(0, 1fr) minmax(0, 1.4fr); gap: clamp(24px, 4vw, 64px);
  padding-block: clamp(48px, 6vw, 80px); border-top: 1px solid var(--line);
}
.principle:first-child { border-top-color: var(--ink); }
.principle-no { font-family: var(--font-serif); font-size: clamp(3rem, 6vw, 4.5rem); line-height: 1; color: var(--accent); }
.principle-title { font-family: var(--font-serif); font-size: clamp(1.375rem, 2.4vw, 1.875rem); letter-spacing: .06em; }
.principle-body { display: grid; gap: 1.1em; color: var(--ink-2); }
.principle-lead { color: var(--ink); font-weight: 500; font-size: 1.0625rem; }
.next-links ul { display: flex; flex-wrap: wrap; gap: 24px 48px; }

/* ---------- process page ---------- */
.flow-wrap { max-width: calc(960px + var(--gutter) * 2); }
.flow { position: relative; }
.flow-item { display: grid; grid-template-columns: 5.5rem 1fr; gap: clamp(16px, 3vw, 40px); position: relative; padding-bottom: 48px; }
.flow-item::before { content: ""; position: absolute; left: 1.75rem; top: 3.6rem; bottom: 0; width: 1px; background: var(--line-strong); }
.flow-item:last-child::before { display: none; }
.flow-no span[aria-hidden] {
  display: grid; place-items: center; width: 3.5rem; height: 3.5rem; border-radius: 50%;
  border: 1px solid var(--ink); font-family: var(--font-serif); font-size: 1.0625rem; background: var(--bg);
}
.flow-item:last-child .flow-no span[aria-hidden] { background: var(--navy); color: var(--on-navy); border-color: var(--navy); }
.flow-body { padding-top: .6rem; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.flow-body .sec-en { margin-bottom: 8px; }
.flow-title { font-family: var(--font-serif); font-size: 1.5rem; letter-spacing: .08em; margin-bottom: 12px; }
.flow-body > p:last-child { color: var(--ink-2); padding-bottom: 32px; max-width: 40em; }
.note-box { margin-top: 16px; padding: 24px 28px; background: var(--surface); border-left: 2px solid var(--accent); color: var(--ink-2); font-size: .9375rem; }

/* ---------- FAQ ---------- */
.faq-wrap { max-width: calc(960px + var(--gutter) * 2); display: grid; gap: clamp(48px, 6vw, 72px); }
.faq-cat-title { font-family: var(--font-serif); font-size: 1.375rem; letter-spacing: .08em; margin-bottom: 20px; }
.faq-item { border-top: 1px solid var(--line); }
.faq-item:last-child { border-bottom: 1px solid var(--line); }
.faq-item summary {
  display: grid; grid-template-columns: 2rem 1fr 24px; gap: 12px; align-items: baseline;
  padding: 22px 0; cursor: pointer; list-style: none; font-weight: 500;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover .faq-text { color: var(--accent); }
.faq-q, .faq-a-mark { font-family: var(--font-serif); font-size: 1.25rem; line-height: 1; color: var(--accent); }
.faq-icon { position: relative; width: 14px; height: 14px; align-self: center; justify-self: end; }
.faq-icon::before, .faq-icon::after { content: ""; position: absolute; left: 0; top: 50%; width: 100%; height: 1px; background: currentColor; transition: transform .3s var(--ease); }
.faq-icon::after { transform: rotate(90deg); }
.faq-item[open] .faq-icon::after { transform: rotate(0deg); }
.faq-a { display: grid; grid-template-columns: 2rem 1fr 24px; gap: 12px; padding: 0 0 26px; color: var(--ink-2); }
.faq-a-mark { color: var(--ink-3); padding-top: .2em; }

/* ---------- contact ---------- */
.contact-wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.8fr); gap: clamp(40px, 6vw, 96px); align-items: start; }
.contact-aside { position: sticky; top: calc(var(--header-h) + 32px); }
.aside-link { margin-top: 32px; }
.notice { border: 1px solid var(--line-strong); background: var(--surface); padding: 20px 24px; margin-bottom: 32px; font-size: .875rem; color: var(--ink-2); }
.notice-title { font-weight: 700; color: var(--ink); margin-bottom: 4px; }
.contact-form { display: grid; gap: 28px; }
.form-legend { font-size: .875rem; color: var(--ink-2); }
.field { display: grid; gap: 10px; }
.field > label, .check label { font-weight: 500; font-size: .9375rem; }
.req, .opt { display: inline-block; font-size: .6875rem; font-weight: 500; padding: 1px 8px; margin-left: 8px; vertical-align: 2px; letter-spacing: .08em; }
.req { background: var(--accent); color: #fff; }
.opt { border: 1px solid var(--line-strong); color: var(--ink-2); }
.form-legend .req { margin: 0 2px 0 0; }
input[type="text"], input[type="email"], input[type="tel"], textarea, select {
  width: 100%; font: inherit; font-size: 1rem; color: var(--ink); letter-spacing: .02em;
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: 0; padding: 14px 16px;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease); appearance: none;
}
textarea { resize: vertical; min-height: 200px; line-height: 1.8; }
input:hover, textarea:hover, select:hover { border-color: var(--ink-2); }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--navy); box-shadow: 0 0 0 3px rgba(0, 0, 0, .12); }
[aria-invalid="true"] { border-color: var(--error) !important; background: #FFF8F7; }
.select-wrap { position: relative; }
.select-wrap::after { content: ""; position: absolute; right: 18px; top: 50%; width: 7px; height: 7px; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); transform: translateY(-70%) rotate(45deg); pointer-events: none; }
.field-hint { font-size: .8125rem; color: var(--ink-2); }
.field-error { font-size: .875rem; color: var(--error); font-weight: 500; }
.field-error:empty { display: none; }
.field-error::before { content: "！ "; }
.check { display: flex; align-items: flex-start; gap: 12px; }
.check input { width: 22px; height: 22px; margin: 3px 0 0; accent-color: var(--navy); flex: none; }
.privacy-note { font-size: .8125rem; color: var(--ink-2); }
.form-submit .btn { min-width: 280px; }
.form-status:empty { display: none; }
.form-status { padding: 20px 24px; border: 1px solid var(--line-strong); background: var(--surface); font-size: .9375rem; }
.form-status.is-error { border-color: var(--error); color: var(--error); }
.form-status.is-success { border-color: var(--navy); }
.form-status strong { display: block; margin-bottom: 4px; }
.error-summary { border: 2px solid var(--error); padding: 20px 24px; margin-bottom: 32px; background: #FFF8F7; }
.error-summary:focus { outline: none; box-shadow: 0 0 0 3px rgba(179, 38, 30, .2); }
.error-summary-title { font-weight: 700; color: var(--error); margin-bottom: 8px; }
.error-summary li { font-size: .9375rem; }
.error-summary a { color: var(--error); }

/* ---------- policy ---------- */
.policy { max-width: calc(840px + var(--gutter) * 2); display: grid; gap: 48px; }
.policy-sec h2 { font-family: var(--font-serif); font-size: 1.25rem; letter-spacing: .06em; padding-bottom: 12px; margin-bottom: 16px; border-bottom: 1px solid var(--line); }
.policy-sec p + p, .policy-sec p + ul { margin-top: 12px; }
.policy-sec p { color: var(--ink-2); }
.policy-sec a { color: var(--ink); }
.policy-dates { text-align: right; font-size: .875rem; color: var(--ink-2); }

.page-404 { min-height: 50vh; }
.page-404 .page-lead { margin-bottom: 40px; }

/* ---------- reveal (控えめなフェード) ---------- */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.js .reveal.is-visible { opacity: 1; transform: none; }
.js .hero-copy > *, .js .hero-visual { animation: rise .9s var(--ease) both; }
.js .hero-copy > *:nth-child(2) { animation-delay: .08s; }
.js .hero-copy > *:nth-child(3) { animation-delay: .16s; }
.js .hero-copy > *:nth-child(4) { animation-delay: .24s; }
.js .hero-visual { animation-delay: .2s; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-delay: 0s !important; transition-duration: .001ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1080px) {
  .svc-row { grid-template-columns: 2.6em minmax(0, 1fr) 28px; }
  .svc-short { grid-column: 2; grid-row: 2; }
  .svc-go { grid-column: 3; grid-row: 1 / span 2; }
  .step-line { grid-template-columns: repeat(4, minmax(0, 1fr)); row-gap: 40px; }
  .step-line::before { display: none; }
  .principle { grid-template-columns: 5rem minmax(0, 1fr); }
  .principle-body { grid-column: 2; }
}

@media (max-width: 899px) {
  body { font-size: .9375rem; line-height: 1.85; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { max-width: 520px; margin-inline: auto; width: 100%; order: 2; }
  .hero-eyebrow { margin-bottom: 24px; }
  .hero-lead { margin-top: 24px; }
  .hero-actions { margin-top: 32px; }
  .hero-index { grid-template-columns: 1fr; gap: 12px; }
  .statement-inner { grid-template-columns: 1fr; row-gap: 32px; }
  .svc-group { grid-template-columns: 1fr; padding-block: 32px 16px; }
  .problem-list { grid-template-columns: 1fr; }
  .approach-home-inner, .company-home-inner, .svc-overview-inner, .contact-wrap { grid-template-columns: 1fr; }
  .approach-home .sec-head, .contact-aside, .svc-detail-head { position: static; }
  .svc-detail { grid-template-columns: 1fr; }
  .svc-detail-no { font-size: 2.25rem; margin-bottom: 12px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .footer-inner { flex-direction: column; padding-block: 48px 32px; }
  .contact-aside { order: 2; border-top: 1px solid var(--line); padding-top: 40px; }
}

@media (max-width: 640px) {
  .hero-title { font-size: clamp(1.875rem, 8.4vw, 2.5rem); letter-spacing: .04em; }
  .hero-actions .btn { width: 100%; }
  .hero-index-list { grid-template-columns: 1fr; gap: 6px; }
  .statement-title { font-size: 1.5rem; }
  .svc-row { padding: 18px 0; gap: 4px 12px; }
  .svc-name { font-size: 1rem; }
  .svc-short { font-size: .8125rem; }
  .step-line { grid-template-columns: 1fr 1fr; }
  .principle-mini { grid-template-columns: 3.2rem 1fr; column-gap: 12px; padding: 26px 0; }
  .pm-no { font-size: 1.875rem; }
  .info-list > div { grid-template-columns: 1fr; gap: 4px; padding: 18px 0; }
  .biz-list { grid-template-columns: 1fr; }
  .svc-toc > li { grid-template-columns: 1fr; gap: 8px; }
  .svc-detail-body { grid-template-columns: 1fr; gap: 28px; }
  .principle { grid-template-columns: 1fr; gap: 16px; }
  .principle-body { grid-column: auto; }
  .principle-no { font-size: 2.5rem; }
  .flow-item { grid-template-columns: 3.25rem 1fr; gap: 16px; padding-bottom: 32px; }
  .flow-item::before { left: 1.375rem; top: 3rem; }
  .flow-no span[aria-hidden] { width: 2.75rem; height: 2.75rem; font-size: .9375rem; }
  .flow-title { font-size: 1.25rem; }
  .faq-item summary, .faq-a { grid-template-columns: 1.6rem 1fr 18px; gap: 10px; }
  .form-submit .btn { width: 100%; min-width: 0; }
  .cta .btn { width: 100%; }
  .footer-nav ul { gap: 10px 24px; }
  .btn { min-height: 54px; }
}

/* ---------- contact: SMS ---------- */
.sub-title-gap { margin-top: 48px; }
.how-list { counter-reset: how; display: grid; gap: 12px; }
.how-list li { counter-increment: how; position: relative; padding-left: 2.2em; font-size: .9375rem; line-height: 1.8; }
.how-list li::before {
  content: counter(how); position: absolute; left: 0; top: .15em; width: 1.6em; height: 1.6em; border-radius: 50%;
  border: 1px solid var(--ink); display: grid; place-items: center; font-family: var(--font-serif); font-size: .8125rem; line-height: 1;
}
.aside-note { margin-top: 16px; font-size: .8125rem; color: var(--ink-2); }
.aside-tel { font-family: var(--font-serif); font-size: 1.625rem; letter-spacing: .06em; }
.aside-tel a { text-decoration: none; }
.aside-tel a:hover { color: var(--accent); }
.aside-tel + .aside-note { margin-top: 4px; }
.confirm { border: 1px solid var(--line-strong); background: var(--surface); padding: clamp(24px, 4vw, 44px); }
.confirm:focus { outline: none; box-shadow: 0 0 0 3px rgba(0, 0, 0, .12); }
.confirm .sub-title { margin-bottom: 12px; }
.confirm-lead { color: var(--ink-2); font-size: .9375rem; }
.confirm-body {
  margin: 24px 0; padding: 20px 24px; background: var(--bg); border-left: 2px solid var(--accent);
  font-family: var(--font-sans); font-size: .9375rem; line-height: 1.8; white-space: pre-wrap; word-break: break-word;
}
.confirm-actions { display: flex; flex-wrap: wrap; gap: 14px; }
@media (max-width: 640px) { .confirm-actions .btn { width: 100%; } }

/* ---------- CORDIA: hero network ---------- */
.g-orbit { fill: none; stroke: var(--line-strong); stroke-width: 1; stroke-dasharray: 2 5; }
.g-cord { fill: none; stroke: var(--ink-2); stroke-width: 1.3; }
.g-cord-accent { stroke: var(--accent); stroke-width: 2; }
.g-ring { fill: none; stroke: var(--accent); stroke-width: 2; transform-origin: 280px 262px; transform: scale(1.18); }
.g-center { font-family: var(--font-serif); font-weight: 700; font-size: 15px; letter-spacing: .2em; fill: var(--on-navy); }
.g-node { font-family: var(--font-sans); font-weight: 500; font-size: 13px; fill: var(--ink); }
.g-node-light { fill: #fff; }
.brand-mark, .footer-mark { letter-spacing: .24em; }
.hero-title { letter-spacing: .03em; }