/* =========================================================================
   Gメソッド / G-METHOD  ── グッドデザイン賞 受賞コンサルティング
   Design System  ── editorial / architectural / 和(朱・墨・和紙)
   ========================================================================= */

:root{
  /* palette */
  --paper:      #f5f2ec;   /* 和紙 warm off-white ground */
  --paper-2:    #fbf9f5;   /* card / raised */
  --paper-3:    #efeae1;   /* subtle fill */
  --ink:        #1b1a18;   /* 墨 near-black warm */
  --ink-2:      #46433d;   /* body muted */
  --ink-3:      #6f6a61;   /* captions */
  --line:       #dcd6ca;   /* hairline */
  --line-2:     #cbc4b5;
  --seal:       #b13a2b;   /* 朱 vermilion accent (seal) */
  --seal-deep:  #8f2c20;
  --seal-soft:  #f0dcd6;
  --gold:       #9a7b35;   /* restrained brass, sparing */

  /* type */
  --sans: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "YuGothic",
          "Noto Sans JP", "Segoe UI", system-ui, sans-serif;
  --mincho: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP",
            "Times New Roman", serif;

  --wrap: 1120px;
  --measure: 720px;
  --radius: 3px;
  --shadow: 0 1px 2px rgba(27,26,24,.04), 0 8px 30px -18px rgba(27,26,24,.25);

  --step--1: clamp(.80rem,.77rem + .15vw,.88rem);
  --step-0:  clamp(.95rem,.92rem + .2vw,1.02rem);
  --step-1:  clamp(1.1rem,1.02rem + .4vw,1.3rem);
  --step-2:  clamp(1.35rem,1.2rem + .7vw,1.75rem);
  --step-3:  clamp(1.7rem,1.4rem + 1.4vw,2.5rem);
  --step-4:  clamp(2.1rem,1.6rem + 2.4vw,3.6rem);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:var(--sans); font-size:var(--step-0); line-height:1.85;
  font-feature-settings:"palt" 1;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
img{ max-width:100%; display:block; }
a{ color:var(--seal-deep); text-decoration:none; }
a:hover{ text-decoration:underline; text-underline-offset:3px; }

/* ---------- layout ---------- */
.wrap{ width:100%; max-width:var(--wrap); margin-inline:auto; padding-inline:clamp(20px,5vw,40px); }
section{ padding-block:clamp(56px,8vw,104px); }
.section-sm{ padding-block:clamp(40px,5vw,64px); }
.divider{ border:0; border-top:1px solid var(--line); margin:0; }

/* ---------- header / nav ---------- */
.site-header{
  position:sticky; top:0; z-index:50;
  background:color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter:saturate(1.2) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{ display:flex; align-items:center; gap:28px; min-height:66px; }
.brand{ display:flex; align-items:baseline; gap:10px; color:var(--ink); text-decoration:none; margin-right:auto; }
.brand:hover{ text-decoration:none; }
.brand .seal-mark{ position:relative; top:2px; }
.brand-name{ font-family:var(--mincho); font-weight:600; font-size:1.24rem; letter-spacing:.06em; }
.brand-sub{ font-size:.62rem; letter-spacing:.22em; color:var(--ink-3); text-transform:uppercase; }
.nav-links{ display:flex; align-items:center; gap:22px; list-style:none; margin:0; padding:0; }
.nav-links a{ color:var(--ink-2); font-size:.86rem; letter-spacing:.04em; text-decoration:none; padding-block:6px; border-bottom:1.5px solid transparent; transition:color .15s,border-color .15s; }
.nav-links a:hover{ color:var(--ink); border-color:var(--line-2); }
.nav-links a[aria-current="page"]{ color:var(--seal-deep); border-color:var(--seal); }
.nav-cta{ display:inline-flex; }
.nav-toggle{ display:none; background:none; border:0; cursor:pointer; padding:8px; margin-left:auto; }
.nav-toggle span{ display:block; width:22px; height:2px; background:var(--ink); margin:4px 0; transition:.2s; }

/* ---------- buttons ---------- */
.btn{ display:inline-flex; align-items:center; gap:.5em; font:inherit; font-size:.9rem; letter-spacing:.03em;
  padding:.72em 1.5em; border-radius:var(--radius); border:1.5px solid var(--ink); cursor:pointer; transition:.18s; text-decoration:none; }
.btn:hover{ text-decoration:none; }
.btn-primary{ background:var(--seal); border-color:var(--seal); color:#fff; box-shadow:var(--shadow); }
.btn-primary:hover{ background:var(--seal-deep); border-color:var(--seal-deep); color:#fff; transform:translateY(-1px); }
.btn-ghost{ background:transparent; color:var(--ink); }
.btn-ghost:hover{ background:var(--ink); color:var(--paper); }
.btn-light{ background:var(--paper); border-color:var(--paper); color:var(--ink); }
.btn-light:hover{ background:#fff; }
.btn-lg{ font-size:1rem; padding:.9em 1.9em; }
.btn-arrow::after{ content:"→"; font-size:1.05em; transition:transform .18s; }
.btn-arrow:hover::after{ transform:translateX(3px); }

/* ---------- eyebrow / headings ---------- */
.eyebrow{ display:inline-flex; align-items:center; gap:.55em; font-size:.72rem; letter-spacing:.28em; text-transform:uppercase; color:var(--seal-deep); font-weight:600; margin:0 0 1.1em; }
.eyebrow::before{ content:""; width:26px; height:1.5px; background:var(--seal); display:inline-block; }
h1,h2,h3,h4{ font-family:var(--mincho); font-weight:600; color:var(--ink); line-height:1.32; letter-spacing:.01em; }
h1{ font-size:var(--step-4); line-height:1.22; letter-spacing:.005em; }
h2{ font-size:var(--step-3); margin:0 0 .7em; }
h3{ font-size:var(--step-1); margin:2em 0 .5em; }
.section-head{ max-width:760px; margin-bottom:clamp(32px,4vw,52px); }
.section-head p{ color:var(--ink-2); font-size:var(--step-1); margin:.4em 0 0; }
.center{ text-align:center; }
.center .section-head{ margin-inline:auto; }
.center .eyebrow{ justify-content:center; }

/* ---------- hero ---------- */
.hero{ position:relative; padding-block:clamp(70px,11vw,150px); overflow:hidden; }
.hero-grid{ display:grid; grid-template-columns:1.15fr .85fr; gap:56px; align-items:center; }
.hero h1{ margin:.2em 0 0; }
.hero h1 .accent{ color:var(--seal); }
.hero .tagline{ font-family:var(--mincho); font-size:var(--step-2); color:var(--ink); margin:0 0 .6em; letter-spacing:.02em; }
.hero .lede{ font-size:var(--step-1); color:var(--ink-2); max-width:34ch; margin:1.2em 0 2em; }
.hero-cta{ display:flex; gap:14px; flex-wrap:wrap; }
.hero-aside{ position:relative; display:flex; justify-content:center; }
.hero-note{ margin-top:1.6em; font-size:.8rem; color:var(--ink-3); letter-spacing:.02em; }

/* seal graphic */
.seal-badge{ width:min(280px,72vw); aspect-ratio:1; display:grid; place-items:center; }

/* ---------- generic grids ---------- */
.grid{ display:grid; gap:24px; }
.grid-2{ grid-template-columns:repeat(2,1fr); }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-4{ grid-template-columns:repeat(4,1fr); }

/* ---------- cards ---------- */
.card{ background:var(--paper-2); border:1px solid var(--line); border-radius:var(--radius); padding:clamp(24px,3vw,34px); }
.card h3{ margin-top:0; }
.card .num{ font-family:var(--mincho); font-size:1.1rem; color:var(--seal); letter-spacing:.1em; display:block; margin-bottom:.6em; }
.card-hover{ transition:transform .2s, box-shadow .2s, border-color .2s; }
.card-hover:hover{ transform:translateY(-3px); box-shadow:var(--shadow); border-color:var(--line-2); }
.pillar{ border-top:2px solid var(--seal); }

/* ---------- feature bg blocks ---------- */
.bg-paper2{ background:var(--paper-2); }
.bg-fill{ background:var(--paper-3); }
.bg-ink{ background:var(--ink); color:var(--paper); }
.bg-ink h1,.bg-ink h2,.bg-ink h3{ color:#fff; }
.bg-ink .eyebrow{ color:#e6a99f; }
.bg-ink .eyebrow::before{ background:var(--seal); }
.bg-ink a{ color:#e9b7ad; }

/* ---------- pricing table ---------- */
.plans{ display:grid; grid-template-columns:repeat(3,1fr); gap:0; border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; background:var(--paper-2); }
.plan{ padding:clamp(24px,3vw,34px); border-right:1px solid var(--line); }
.plan:last-child{ border-right:0; }
.plan.featured{ background:var(--ink); color:var(--paper); position:relative; }
.plan.featured h3{ color:#fff; }
.plan .plan-name{ font-family:var(--mincho); font-size:1.2rem; margin:0 0 .3em; }
.plan .price{ font-size:1.5rem; font-family:var(--mincho); letter-spacing:.02em; margin:.2em 0 .1em; }
.plan .price small{ font-size:.7rem; color:var(--ink-3); letter-spacing:.05em; }
.plan.featured .price small{ color:#b8b2a6; }
.plan .flag{ position:absolute; top:14px; right:14px; font-size:.62rem; letter-spacing:.2em; background:var(--seal); color:#fff; padding:.3em .8em; border-radius:2px; }
.plan ul{ list-style:none; padding:0; margin:1em 0 0; font-size:.86rem; }
.plan li{ padding:.35em 0 .35em 1.3em; position:relative; color:inherit; }
.plan li::before{ content:""; position:absolute; left:0; top:.85em; width:6px; height:6px; background:var(--seal); border-radius:50%; }
.plan.featured li::before{ background:#e6a99f; }

/* ---------- stat ---------- */
.stat{ text-align:center; }
.stat .n{ font-family:var(--mincho); font-size:clamp(2rem,4vw,3rem); color:var(--seal); line-height:1; letter-spacing:.02em; }
.stat .l{ font-size:.82rem; color:var(--ink-2); margin-top:.6em; letter-spacing:.03em; }

/* ---------- steps / process ---------- */
.steps{ counter-reset:step; list-style:none; padding:0; margin:0; display:grid; gap:2px; }
.steps li{ counter-increment:step; background:var(--paper-2); border:1px solid var(--line); padding:22px 26px 22px 66px; position:relative; }
.steps li::before{ content:counter(step,decimal-leading-zero); position:absolute; left:22px; top:20px; font-family:var(--mincho); color:var(--seal); font-size:1.05rem; letter-spacing:.05em; }
.steps li b{ display:block; font-family:var(--mincho); font-size:1.05rem; margin-bottom:.2em; }

/* ---------- rich body content (from generated fragments) ---------- */
.prose{ max-width:var(--measure); }
.prose h2{ font-size:var(--step-2); margin:2em 0 .6em; padding-top:.4em; }
.prose h2:first-child{ margin-top:0; }
.prose h3{ font-size:var(--step-1); }
.prose p{ margin:0 0 1.2em; color:var(--ink-2); }
.prose strong{ color:var(--ink); font-weight:700; }
.prose ul,.prose ol{ margin:0 0 1.3em; padding-left:1.3em; color:var(--ink-2); }
.prose li{ margin:.4em 0; padding-left:.2em; }
.prose li::marker{ color:var(--seal); }
.prose blockquote{ margin:1.6em 0; padding:.4em 0 .4em 1.3em; border-left:3px solid var(--seal); font-family:var(--mincho); font-size:1.1rem; color:var(--ink); }
.prose a{ border-bottom:1px solid var(--seal-soft); }

/* tables */
.prose table, .tbl{ width:100%; border-collapse:collapse; margin:1.6em 0; font-size:.9rem; background:var(--paper-2); }
.prose th,.prose td,.tbl th,.tbl td{ text-align:left; padding:.75em 1em; border-bottom:1px solid var(--line); vertical-align:top; }
.prose thead th,.tbl thead th{ background:var(--ink); color:#fff; font-family:var(--sans); font-weight:600; font-size:.82rem; letter-spacing:.04em; border-bottom:0; }
.prose tbody tr:last-child td,.tbl tbody tr:last-child td{ border-bottom:0; }
.prose tbody tr:nth-child(even),.tbl tbody tr:nth-child(even){ background:color-mix(in srgb,var(--paper-3) 55%,transparent); }
.table-scroll{ overflow-x:auto; -webkit-overflow-scrolling:touch; }

/* callout */
.callout{ background:var(--seal-soft); border:1px solid #e3c4bc; border-left:3px solid var(--seal); border-radius:var(--radius); padding:18px 22px; margin:1.6em 0; font-size:.9rem; color:var(--ink); }
.callout strong{ color:var(--seal-deep); }
.note{ font-size:.82rem; color:var(--ink-3); }

/* ---------- article ---------- */
.article-head{ border-bottom:1px solid var(--line); padding-bottom:28px; margin-bottom:40px; }
.breadcrumb{ font-size:.78rem; color:var(--ink-3); margin-bottom:1.4em; letter-spacing:.03em; }
.breadcrumb a{ color:var(--ink-3); }
.article-meta{ display:flex; flex-wrap:wrap; gap:8px; margin-top:1.4em; }
.tag{ font-size:.72rem; letter-spacing:.04em; color:var(--seal-deep); background:var(--seal-soft); border-radius:100px; padding:.3em .9em; }
.article-lead{ font-family:var(--mincho); font-size:var(--step-1); color:var(--ink); line-height:1.85; margin:1em 0 0; }
.faq-block{ margin-top:48px; border-top:1px solid var(--line); padding-top:36px; }
.faq-item{ border-bottom:1px solid var(--line); padding:20px 0; }
.faq-item summary{ font-family:var(--mincho); font-size:1.08rem; color:var(--ink); cursor:pointer; list-style:none; display:flex; gap:.6em; align-items:baseline; }
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::before{ content:"Q"; color:var(--seal); font-family:var(--mincho); font-weight:700; }
.faq-item[open] summary{ margin-bottom:.6em; }
.faq-item .a{ color:var(--ink-2); font-size:.92rem; padding-left:1.5em; }

/* article list cards */
.article-list{ display:grid; grid-template-columns:repeat(2,1fr); gap:2px; border:1px solid var(--line); }
.article-list a{ display:block; background:var(--paper-2); padding:30px 32px; text-decoration:none; color:var(--ink); transition:background .18s; }
.article-list a:hover{ background:#fff; text-decoration:none; }
.article-list .k{ font-size:.72rem; letter-spacing:.16em; color:var(--seal-deep); text-transform:uppercase; }
.article-list h3{ margin:.5em 0 .4em; font-size:1.15rem; }
.article-list p{ font-size:.86rem; color:var(--ink-2); margin:0; }
.article-list .more{ font-size:.8rem; color:var(--seal-deep); margin-top:1em; display:inline-block; }

/* ---------- CTA band ---------- */
.cta-band{ background:var(--ink); color:var(--paper); text-align:center; }
.cta-band h2{ color:#fff; }
.cta-band p{ color:#c9c3b7; max-width:52ch; margin-inline:auto; font-size:var(--step-1); }
.cta-band .hero-cta{ justify-content:center; margin-top:2em; }

/* ---------- contact form ---------- */
.form{ display:grid; gap:18px; max-width:640px; }
.field{ display:grid; gap:6px; }
.field label{ font-size:.82rem; color:var(--ink); font-weight:600; letter-spacing:.03em; }
.field label .req{ color:var(--seal); }
.field input,.field textarea,.field select{ font:inherit; font-size:.95rem; padding:.7em .9em; border:1px solid var(--line-2); border-radius:var(--radius); background:var(--paper-2); color:var(--ink); }
.field input:focus,.field textarea:focus,.field select:focus{ outline:2px solid var(--seal); outline-offset:1px; border-color:var(--seal); }
.field textarea{ min-height:130px; resize:vertical; }

/* ---------- footer ---------- */
.site-footer{ background:var(--ink); color:#b8b2a6; padding-block:56px 40px; font-size:.85rem; }
.site-footer a{ color:#d8d2c6; }
.footer-top{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:40px; padding-bottom:36px; border-bottom:1px solid rgba(255,255,255,.12); }
.footer-brand .brand-name{ color:#fff; }
.footer-brand p{ margin:1em 0 0; color:#9a948a; max-width:34ch; font-size:.82rem; }
.footer-col h4{ color:#fff; font-family:var(--sans); font-size:.78rem; letter-spacing:.14em; text-transform:uppercase; margin:0 0 1em; }
.footer-col ul{ list-style:none; padding:0; margin:0; display:grid; gap:.6em; }
.footer-col a{ color:#b8b2a6; text-decoration:none; font-size:.85rem; }
.footer-col a:hover{ color:#fff; text-decoration:underline; }
.disclaimer{ margin-top:28px; font-size:.74rem; color:#847e74; line-height:1.7; }
.footer-legal{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; margin-top:24px; font-size:.72rem; color:#6f6a61; }

/* ---------- utilities ---------- */
.mt-0{ margin-top:0; } .mb-0{ margin-bottom:0; }
.muted{ color:var(--ink-3); }
.lead{ font-size:var(--step-1); color:var(--ink-2); }
/* reveal はプログレッシブエンハンスメント: JS(.js)確認時のみ初期非表示にする。
   JSなし/クローラ/リーダーモードでは常に表示される。 */
.js .reveal{ opacity:0; transform:translateY(14px); transition:opacity .7s ease, transform .7s ease; }
.js .reveal.in{ opacity:1; transform:none; }

/* ---------- responsive ---------- */
@media (max-width:900px){
  .hero-grid{ grid-template-columns:1fr; gap:36px; }
  .hero-aside{ order:-1; }
  .grid-3,.grid-4{ grid-template-columns:repeat(2,1fr); }
  .plans{ grid-template-columns:1fr; }
  .plan{ border-right:0; border-bottom:1px solid var(--line); }
  .plan:last-child{ border-bottom:0; }
  .footer-top{ grid-template-columns:1fr 1fr; }
  .article-list{ grid-template-columns:1fr; }
}
@media (max-width:680px){
  .nav-links,.nav .nav-cta{ display:none; }
  .nav-links.open{ display:flex; position:absolute; top:66px; left:0; right:0; flex-direction:column; align-items:flex-start; gap:0; background:var(--paper); border-bottom:1px solid var(--line); padding:8px 24px 20px; }
  .nav-links.open a{ padding:12px 0; width:100%; border-bottom:1px solid var(--line); }
  .nav-toggle{ display:block; }
  .grid-2,.grid-3,.grid-4{ grid-template-columns:1fr; }
  .footer-top{ grid-template-columns:1fr; gap:28px; }
}
@media (prefers-reduced-motion:reduce){ *{ scroll-behavior:auto; } .reveal{ transition:none; opacity:1; transform:none; } }