/* ==========================================================================
   ARCHI VISION STUDIO — Design System
   コンセプト: 建築の価値を、ビジュアルで伝えるプロフェッショナルCGスタジオ
   Base: off-white / Ink: charcoal / Accent: deep forest green
   ========================================================================== */

:root {
  --bg: #f7f6f3;
  --bg-alt: #efefeb;
  --surface: #ffffff;
  --ink: #23282a;
  --ink-soft: #555e5c;
  --muted: #8a918e;
  --green: #1f4a3d;
  --green-deep: #16362c;
  --green-tint: #e7eeea;
  --line: #e0e0da;
  --warm: #b9ae9e;
  --radius: 4px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 2px rgba(35, 40, 42, .04), 0 8px 24px rgba(35, 40, 42, .05);
  --shadow-md: 0 2px 6px rgba(35, 40, 42, .06), 0 18px 48px rgba(35, 40, 42, .09);
  --maxw: 1200px;
  --maxw-narrow: 860px;
  --font-head: "Zen Kaku Gothic New", "Noto Sans JP", sans-serif;
  --font-body: "Noto Sans JP", "Zen Kaku Gothic New", sans-serif;
  --header-h: 76px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: .02em;
  font-feature-settings: "palt" 1;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--green); text-decoration: none; transition: opacity .25s, color .25s; }
a:hover { opacity: .72; }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: .01em;
  margin: 0;
  color: var(--ink);
}

p { margin: 0 0 1.2em; }
ul, ol { margin: 0 0 1.2em; padding-left: 1.3em; }
li { margin-bottom: .5em; }

:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--green); color: #fff; padding: 12px 20px;
}
.skip-link:focus { left: 0; }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: var(--maxw-narrow); }

.section { padding: 104px 0; }
.section--tight { padding: 72px 0; }
.section--alt { background: var(--bg-alt); }
.section--ink { background: var(--ink); color: #e9e9e4; }
.section--ink h2, .section--ink h3 { color: #fff; }

.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-head);
  font-size: 12px; font-weight: 500; letter-spacing: .18em;
  text-transform: uppercase; color: var(--green);
  margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--green); }
.section--ink .eyebrow { color: #9dc3b4; }
.section--ink .eyebrow::before { background: #9dc3b4; }

.h2 { font-size: clamp(24px, 3.4vw, 36px); margin-bottom: 20px; }
.h3 { font-size: clamp(18px, 2.1vw, 22px); margin-bottom: 14px; }
.lead { color: var(--ink-soft); font-size: 15.5px; max-width: 700px; }
.section--ink .lead { color: #b6bdb9; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--font-head); font-size: 15px; font-weight: 600;
  padding: 16px 30px; border-radius: var(--radius);
  border: 1px solid transparent; cursor: pointer;
  transition: background .25s, color .25s, border-color .25s, transform .25s;
  letter-spacing: .04em; text-align: center;
}
.btn i { font-size: 14px; }
.btn:hover { opacity: 1; transform: translateY(-1px); }
.btn--primary { background: var(--green); color: #fff; }
.btn--primary:hover { background: var(--green-deep); }
.btn--ghost { background: transparent; color: var(--ink); border-color: rgba(35,40,42,.28); }
.btn--ghost:hover { border-color: var(--green); color: var(--green); }
.btn--light { background: #fff; color: var(--green-deep); }
.btn--light:hover { background: #e9e9e4; }
.btn--outline-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.42); }
.btn--outline-light:hover { border-color: #fff; background: rgba(255,255,255,.08); }
.btn--sm { padding: 11px 20px; font-size: 13.5px; }
.btn--block { width: 100%; }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }
.btn-row--center { justify-content: center; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  display: flex; align-items: center;
  background: rgba(247, 246, 243, .92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background .3s, border-color .3s, box-shadow .3s;
}
.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 1px 20px rgba(35,40,42,.05);
}
.site-header__inner {
  width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand__text { display: flex; flex-direction: column; line-height: 1.25; }
.brand__name {
  font-family: var(--font-head); font-weight: 700; font-size: 15.5px;
  letter-spacing: .06em; color: var(--ink);
}
.brand__sub { font-size: 10px; letter-spacing: .16em; color: var(--muted); text-transform: uppercase; }

.nav { display: flex; align-items: center; gap: 30px; }
.nav__links { display: flex; align-items: center; gap: 26px; list-style: none; margin: 0; padding: 0; }
.nav__links li { margin: 0; }
.nav__links a {
  font-family: var(--font-head); font-size: 14px; font-weight: 500;
  color: var(--ink); letter-spacing: .04em; position: relative; padding: 6px 0;
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 1px;
  background: var(--green); transition: width .3s;
}
.nav__links a:hover::after, .nav__links a[aria-current="page"]::after { width: 100%; }
.nav__links a[aria-current="page"] { color: var(--green); }

.nav-toggle {
  display: none; width: 44px; height: 44px; border: 1px solid var(--line);
  background: transparent; border-radius: var(--radius); cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-toggle span { display: block; width: 20px; height: 1.5px; background: var(--ink); transition: transform .3s, opacity .3s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.drawer {
  position: fixed; inset: var(--header-h) 0 0 0; z-index: 99;
  background: var(--bg); padding: 32px 24px 48px;
  overflow-y: auto; display: none;
  transform: translateY(-8px); opacity: 0;
  transition: transform .3s, opacity .3s;
}
.drawer.is-open { display: block; transform: translateY(0); opacity: 1; }
.drawer__group { margin-bottom: 26px; border-bottom: 1px solid var(--line); padding-bottom: 20px; }
.drawer__label {
  font-size: 11px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--muted); font-family: var(--font-head); margin-bottom: 12px;
}
.drawer ul { list-style: none; margin: 0; padding: 0; }
.drawer ul li { margin-bottom: 2px; }
.drawer ul a {
  display: block; padding: 12px 0; font-family: var(--font-head);
  font-size: 15px; font-weight: 500; color: var(--ink);
  border-bottom: 1px solid rgba(224,224,218,.6);
}
.drawer .btn { margin-top: 8px; }

/* ---------- Hero (home) ---------- */
.hero { position: relative; min-height: 92vh; display: flex; align-items: flex-end; overflow: hidden; padding-top: var(--header-h); }
.hero__media { position: absolute; inset: 0; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; }
.hero__media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(22,54,44,.30) 0%, rgba(22,54,44,.42) 42%, rgba(18,26,23,.80) 100%);
}
.hero__inner { position: relative; z-index: 2; width: 100%; padding-bottom: 72px; color: #fff; }
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-head); font-size: 12px; letter-spacing: .2em;
  text-transform: uppercase; color: #cfe3da; margin-bottom: 22px;
}
.hero__eyebrow::before { content: ""; width: 34px; height: 1px; background: #cfe3da; }
.hero h1 {
  color: #fff; font-size: clamp(30px, 5.2vw, 58px); font-weight: 600;
  line-height: 1.35; letter-spacing: .01em; margin-bottom: 22px; max-width: 15em;
}
.hero__sub {
  color: #dbe4e0; font-size: clamp(14px, 1.6vw, 17px); max-width: 640px;
  margin-bottom: 34px; line-height: 2;
}
.hero__meta {
  display: flex; flex-wrap: wrap; gap: 10px 28px; margin-top: 40px;
  padding-top: 26px; border-top: 1px solid rgba(255,255,255,.22);
  font-size: 13px; color: #c8d3ce; letter-spacing: .04em;
}
.hero__meta span { display: inline-flex; align-items: center; gap: 9px; }
.hero__meta i { color: #9dc3b4; }

/* ---------- Page hero (sub pages) ---------- */
.page-hero { padding: calc(var(--header-h) + 64px) 0 64px; background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: clamp(26px, 3.6vw, 40px); margin-bottom: 18px; }
.page-hero__lead { color: var(--ink-soft); max-width: 760px; font-size: 15.5px; }
.page-hero--image { position: relative; color: #fff; background: var(--ink); border-bottom: none; overflow: hidden; }
.page-hero--image img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .38; }
.page-hero--image .container { position: relative; z-index: 2; }
.page-hero--image h1, .page-hero--image .page-hero__lead { color: #fff; }
.page-hero--image .page-hero__lead { color: #d5dcd8; }

/* ---------- Breadcrumb ---------- */
.breadcrumb { padding: 18px 0; font-size: 12.5px; color: var(--muted); }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; }
.breadcrumb li { margin: 0; display: flex; align-items: center; gap: 8px; }
.breadcrumb li + li::before { content: "/"; color: var(--line); }
.breadcrumb a { color: var(--ink-soft); }
.breadcrumb [aria-current="page"] { color: var(--ink); }

/* ---------- Hero stats / trust strip ---------- */
.trust-strip { border-bottom: 1px solid var(--line); background: var(--bg); }
.trust-strip ul {
  list-style: none; margin: 0; padding: 30px 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px;
}
.trust-strip li { margin: 0; padding-left: 18px; border-left: 1px solid var(--line); }
.trust-strip strong { display: block; font-family: var(--font-head); font-size: 15px; margin-bottom: 4px; }
.trust-strip span { font-size: 13px; color: var(--muted); line-height: 1.7; display: block; }

/* ---------- Works gallery ---------- */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 38px;
  padding-bottom: 26px; border-bottom: 1px solid var(--line);
}
.filter-btn {
  font-family: var(--font-head); font-size: 13.5px; font-weight: 500;
  padding: 9px 20px; border-radius: 999px; cursor: pointer;
  background: transparent; color: var(--ink-soft);
  border: 1px solid var(--line); transition: all .25s; letter-spacing: .04em;
}
.filter-btn:hover { border-color: var(--green); color: var(--green); }
.filter-btn.is-active { background: var(--green); border-color: var(--green); color: #fff; }

.works-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.works-grid--2 { grid-template-columns: repeat(2, 1fr); }

.work-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; display: flex; flex-direction: column; transition: box-shadow .35s, transform .35s; }
.work-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.work-card__media { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--bg-alt); }
.work-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.work-card:hover .work-card__media img { transform: scale(1.04); }
.work-card__badge {
  position: absolute; top: 14px; left: 14px;
  background: rgba(255,255,255,.94); color: var(--green-deep);
  font-family: var(--font-head); font-size: 11.5px; font-weight: 600;
  padding: 5px 12px; border-radius: 999px; letter-spacing: .06em;
}
.work-card__body { padding: 24px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.work-card__title { font-size: 16.5px; font-weight: 600; margin-bottom: 10px; line-height: 1.65; }
.work-card__summary { font-size: 13.5px; color: var(--ink-soft); line-height: 1.85; flex: 1; margin-bottom: 16px; }
.work-card__link { font-family: var(--font-head); font-size: 13px; font-weight: 600; letter-spacing: .06em; display: inline-flex; align-items: center; gap: 8px; }
.work-card__link i { transition: transform .3s; }
.work-card:hover .work-card__link i { transform: translateX(4px); }

.work-card.is-hidden { display: none; }

/* ---------- Issue grid ---------- */
.issue-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.issue-item { background: var(--bg); padding: 34px 32px; }
.issue-item__num {
  font-family: var(--font-head); font-size: 12px; letter-spacing: .16em;
  color: var(--green); margin-bottom: 14px; display: block;
}
.issue-item h3 { font-size: 16.5px; margin-bottom: 12px; }
.issue-item p { font-size: 14px; color: var(--ink-soft); margin-bottom: 0; line-height: 1.9; }
.issue-item__solve {
  margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--line);
  font-size: 13.5px; color: var(--green); display: flex; gap: 9px;
}
.issue-item__solve i { margin-top: 5px; flex: none; }

/* ---------- Service grid ---------- */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.service-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  overflow: hidden; display: flex; flex-direction: column; transition: box-shadow .35s, transform .35s;
}
.service-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.service-card__media { aspect-ratio: 3 / 2; overflow: hidden; background: var(--bg-alt); }
.service-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.service-card:hover .service-card__media img { transform: scale(1.04); }
.service-card__body { padding: 26px 26px 28px; flex: 1; display: flex; flex-direction: column; }
.service-card h3 { font-size: 17.5px; margin-bottom: 6px; }
.service-card__en { font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; font-family: var(--font-head); }
.service-card p { font-size: 13.5px; color: var(--ink-soft); line-height: 1.9; flex: 1; }
.service-card__uses { font-size: 12.5px; color: var(--green); background: var(--green-tint); padding: 10px 14px; border-radius: var(--radius); margin-bottom: 18px; line-height: 1.7; }

/* ---------- Reason (選ばれる理由) ---------- */
.reason-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.reason-item { padding-top: 24px; border-top: 2px solid var(--green); }
.reason-item i { font-size: 20px; color: var(--green); margin-bottom: 16px; display: block; }
.reason-item h3 { font-size: 16.5px; margin-bottom: 12px; }
.reason-item p { font-size: 14px; color: var(--ink-soft); line-height: 1.9; margin-bottom: 0; }

/* ---------- Price table ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); }
table.data-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 560px; }
table.data-table th, table.data-table td { padding: 18px 22px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
table.data-table thead th {
  background: var(--bg-alt); font-family: var(--font-head); font-size: 13px;
  letter-spacing: .06em; font-weight: 600; white-space: nowrap;
}
table.data-table tbody tr:last-child td { border-bottom: none; }
table.data-table td strong { font-family: var(--font-head); }
.price-note { font-size: 12.5px; color: var(--muted); margin-top: 16px; line-height: 1.9; }

.price-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }
.price-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 30px 28px; display: flex; flex-direction: column; }
.price-card--featured { border-color: var(--green); box-shadow: var(--shadow-sm); }
.price-card__label { font-family: var(--font-head); font-size: 12px; letter-spacing: .14em; color: var(--green); margin-bottom: 12px; text-transform: uppercase; }
.price-card h3 { font-size: 18px; margin-bottom: 12px; }
.price-card p { font-size: 13.5px; color: var(--ink-soft); flex: 1; }

/* ---------- Flow ---------- */
.flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 0; border-top: 1px solid var(--line); }
.flow-step { padding: 30px 22px 30px 0; border-right: 1px solid var(--line); }
.flow-step:last-child { border-right: none; }
.flow-step__num {
  font-family: var(--font-head); font-size: 26px; font-weight: 600;
  color: var(--green-tint); -webkit-text-stroke: 1px var(--green);
  color: transparent; margin-bottom: 14px; line-height: 1;
}
.flow-step h3 { font-size: 15px; margin-bottom: 10px; }
.flow-step p { font-size: 12.8px; color: var(--ink-soft); line-height: 1.85; margin-bottom: 0; }

.flow--vertical { grid-template-columns: 1fr; border-top: none; }
.flow--vertical .flow-step { display: grid; grid-template-columns: 76px 1fr; gap: 24px; padding: 26px 0; border-right: none; border-bottom: 1px solid var(--line); align-items: start; }
.flow--vertical .flow-step:last-child { border-bottom: none; }
.flow--vertical .flow-step__num { font-size: 30px; margin: 0; }
.flow--vertical .flow-step p { font-size: 14px; }

/* ---------- Materials list ---------- */
.material-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.material-item { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px 26px; display: flex; gap: 16px; }
.material-item__icon { width: 40px; height: 40px; flex: none; border-radius: 50%; background: var(--green-tint); color: var(--green); display: grid; place-items: center; }
.material-item h3 { font-size: 15.5px; margin-bottom: 8px; }
.material-item p { font-size: 13.5px; color: var(--ink-soft); margin-bottom: 0; line-height: 1.85; }
.material-item__tag { font-size: 11px; font-family: var(--font-head); letter-spacing: .1em; color: var(--muted); }

/* ---------- FAQ ---------- */
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  list-style: none; cursor: pointer; padding: 26px 56px 26px 0; position: relative;
  font-family: var(--font-head); font-size: 16px; font-weight: 600; line-height: 1.7;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: ""; position: absolute; right: 12px; top: 34px;
  width: 12px; height: 12px; border-right: 1.5px solid var(--green); border-bottom: 1.5px solid var(--green);
  transform: rotate(45deg); transition: transform .3s;
}
.faq-item[open] summary::after { transform: rotate(-135deg); }
.faq-item__body { padding: 0 56px 30px 0; color: var(--ink-soft); font-size: 14.5px; line-height: 1.95; }
.faq-item__body p:last-child { margin-bottom: 0; }
.faq-q-mark { color: var(--green); font-family: var(--font-head); margin-right: 8px; }

/* ---------- Columns ---------- */
.column-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.column-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; display: flex; flex-direction: column; transition: box-shadow .35s, transform .35s; }
.column-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.column-card__media { aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-alt); }
.column-card__media img { width: 100%; height: 100%; object-fit: cover; }
.column-card__body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.column-card__meta { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; font-size: 12px; color: var(--muted); margin-bottom: 12px; }
.column-card__cat { background: var(--green-tint); color: var(--green-deep); font-family: var(--font-head); font-size: 11.5px; padding: 4px 10px; border-radius: 999px; letter-spacing: .04em; }
.column-card h3 { font-size: 16px; line-height: 1.7; margin-bottom: 12px; }
.column-card p { font-size: 13.5px; color: var(--ink-soft); line-height: 1.85; flex: 1; margin-bottom: 0; }

.column-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.column-row { display: grid; grid-template-columns: 200px 1fr auto; gap: 28px; padding: 26px 0; border-bottom: 1px solid var(--line); align-items: center; }
.column-row__thumb { aspect-ratio: 16/10; overflow: hidden; border-radius: var(--radius); background: var(--bg-alt); }
.column-row__thumb img { width: 100%; height: 100%; object-fit: cover; }
.column-row__meta { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; font-size: 12px; color: var(--muted); margin-bottom: 8px; }
.column-row h3 { font-size: 16.5px; margin-bottom: 8px; line-height: 1.7; }
.column-row p { font-size: 13.5px; color: var(--ink-soft); margin-bottom: 0; line-height: 1.85; }
.column-row__arrow { color: var(--green); font-size: 18px; }

.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 56px; flex-wrap: wrap; }
.pagination button, .pagination span {
  min-width: 42px; height: 42px; display: grid; place-items: center;
  border: 1px solid var(--line); background: var(--surface); border-radius: var(--radius);
  font-family: var(--font-head); font-size: 14px; color: var(--ink-soft); cursor: pointer; transition: all .25s;
}
.pagination button:hover { border-color: var(--green); color: var(--green); }
.pagination .is-current { background: var(--green); border-color: var(--green); color: #fff; }

/* ---------- Article prose ---------- */
.prose { max-width: 760px; }
.prose h2 {
  font-size: clamp(20px, 2.4vw, 25px); margin: 56px 0 20px; padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.prose h3 { font-size: 17.5px; margin: 38px 0 14px; }
.prose p { font-size: 15px; color: #3b4243; line-height: 2.05; }
.prose ul, .prose ol { font-size: 15px; color: #3b4243; line-height: 2; }
.prose li { margin-bottom: .6em; }
.prose table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 24px 0; border: 1px solid var(--line); }
.prose th, .prose td { padding: 14px 18px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; line-height: 1.85; }
.prose thead th { background: var(--bg-alt); font-family: var(--font-head); font-size: 13px; }
.prose .note { background: var(--green-tint); border-radius: var(--radius); padding: 18px 22px; font-size: 13.5px; color: var(--ink-soft); margin: 28px 0; }
.prose .note p:last-child { margin-bottom: 0; }
.prose strong { color: var(--ink); }

.answer-box {
  background: var(--surface); border: 1px solid var(--green); border-left: 3px solid var(--green);
  border-radius: var(--radius); padding: 24px 28px; margin-bottom: 40px;
}
.answer-box__label { font-family: var(--font-head); font-size: 11.5px; letter-spacing: .16em; color: var(--green); text-transform: uppercase; margin-bottom: 12px; display: block; }
.answer-box p { font-size: 14.5px; line-height: 1.95; margin-bottom: 0; color: var(--ink); }

.article-meta { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; font-size: 13px; color: var(--muted); margin-bottom: 32px; padding-bottom: 26px; border-bottom: 1px solid var(--line); }
.article-meta__cat { background: var(--green-tint); color: var(--green-deep); font-family: var(--font-head); font-size: 12px; padding: 5px 12px; border-radius: 999px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 34px 0 0; }
.tag-list span { font-size: 12px; color: var(--ink-soft); background: var(--bg-alt); padding: 5px 12px; border-radius: 999px; }

.author-box { display: flex; gap: 20px; align-items: flex-start; background: var(--bg-alt); border-radius: var(--radius-lg); padding: 26px 28px; margin-top: 40px; }
.author-box__avatar { width: 54px; height: 54px; flex: none; border-radius: 50%; background: var(--green); color: #fff; display: grid; place-items: center; font-family: var(--font-head); font-size: 18px; }
.author-box h3 { font-size: 15px; margin-bottom: 4px; }
.author-box__role { font-size: 12px; color: var(--green); margin-bottom: 10px; }
.author-box p { font-size: 13px; color: var(--ink-soft); margin-bottom: 0; line-height: 1.85; }

.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--green-deep); color: #fff; padding: 84px 0; position: relative; overflow: hidden; }
.cta-band::before {
  content: ""; position: absolute; right: -120px; top: -120px; width: 420px; height: 420px;
  border: 1px solid rgba(255,255,255,.08); border-radius: 50%;
}
.cta-band__inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.35fr 1fr; gap: 56px; align-items: center; }
.cta-band h2 { color: #fff; font-size: clamp(22px, 3vw, 32px); margin-bottom: 18px; }
.cta-band p { color: #c3d3cc; font-size: 14.5px; margin-bottom: 0; }
.cta-band__actions { display: flex; flex-direction: column; gap: 14px; }

/* ---------- Contact form ---------- */
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px 24px; }
.form-field { display: flex; flex-direction: column; gap: 8px; }
.form-field--full { grid-column: 1 / -1; }
.form-field label { font-family: var(--font-head); font-size: 14px; font-weight: 500; display: flex; align-items: center; gap: 8px; }
.req { font-size: 10.5px; background: var(--green); color: #fff; padding: 2px 7px; border-radius: 2px; letter-spacing: .06em; }
.opt { font-size: 10.5px; background: var(--bg-alt); color: var(--muted); padding: 2px 7px; border-radius: 2px; letter-spacing: .06em; }
.form-field input[type="text"],
.form-field input[type="email"],
.form-field input[type="tel"],
.form-field input[type="date"],
.form-field select,
.form-field textarea {
  font-family: var(--font-body); font-size: 15px; color: var(--ink);
  padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface); width: 100%; transition: border-color .25s, box-shadow .25s;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(31,74,61,.09);
}
.form-field textarea { min-height: 150px; resize: vertical; line-height: 1.85; }
.checkbox-group { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 18px; }
.checkbox-item { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.checkbox-item input { width: 18px; height: 18px; accent-color: var(--green); flex: none; }
.consent { display: flex; gap: 12px; align-items: flex-start; font-size: 14px; line-height: 1.8; }
.consent input { width: 20px; height: 20px; accent-color: var(--green); flex: none; margin-top: 4px; }
.form-help { font-size: 12.5px; color: var(--muted); line-height: 1.8; }
.field-error { font-size: 12.5px; color: #b03a2e; display: none; }
.form-field.has-error input, .form-field.has-error select, .form-field.has-error textarea { border-color: #b03a2e; }
.form-field.has-error .field-error { display: block; }

.form-notice {
  background: var(--bg-alt); border-left: 3px solid var(--warm); border-radius: var(--radius);
  padding: 20px 24px; font-size: 13.5px; color: var(--ink-soft); line-height: 1.9; margin-bottom: 36px;
}
.form-notice strong { color: var(--ink); }
.form-notice i { color: var(--warm); margin-right: 8px; }

.form-status { display: none; padding: 18px 22px; border-radius: var(--radius); font-size: 14px; margin-bottom: 26px; line-height: 1.85; }
.form-status.is-error { display: block; background: #fdf1ef; border: 1px solid #e8c4bd; color: #8c2f22; }
.form-status.is-success { display: block; background: var(--green-tint); border: 1px solid #b9d3c6; color: var(--green-deep); }
.form-status__detail { display: inline-block; margin-top: 4px; font-size: 13px; opacity: .85; }

.contact-aside { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 30px 28px; }
.contact-aside h3 { font-size: 16px; margin-bottom: 16px; }
.contact-aside dl { margin: 0 0 20px; font-size: 13.5px; }
.contact-aside dt { font-family: var(--font-head); color: var(--green); font-size: 12px; letter-spacing: .08em; margin-bottom: 4px; }
.contact-aside dd { margin: 0 0 16px; color: var(--ink-soft); line-height: 1.8; }
.contact-layout { display: grid; grid-template-columns: 1fr 320px; gap: 48px; align-items: start; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: #a8afac; padding: 76px 0 34px; font-size: 13.5px; }
.site-footer a { color: #cfd5d2; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 44px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,.1); }
.footer-brand .brand__name { color: #fff; }
.footer-brand p { margin-top: 18px; font-size: 13px; line-height: 1.95; color: #98a09c; }
.footer-col h3 { color: #fff; font-size: 13px; letter-spacing: .1em; margin-bottom: 16px; font-family: var(--font-head); }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 13.5px; }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; padding-top: 26px; font-size: 12px; color: #838b87; }
.footer-bottom nav { display: flex; flex-wrap: wrap; gap: 18px; }

/* ---------- Mobile fixed CTA ---------- */
.mobile-cta {
  display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 98;
  background: rgba(255,255,255,.96); backdrop-filter: blur(10px);
  border-top: 1px solid var(--line); padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  gap: 10px;
}
.mobile-cta .btn { flex: 1; padding: 13px 12px; font-size: 13.5px; }

/* ---------- Utility ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 44px; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; }
.mt-24 { margin-top: 24px; } .mt-40 { margin-top: 40px; } .mt-56 { margin-top: 56px; }
.text-center { text-align: center; }
.figure-caption { font-size: 12.5px; color: var(--muted); margin-top: 10px; line-height: 1.8; }
.placeholder-note {
  display: inline-flex; align-items: center; gap: 8px; font-size: 12px;
  background: #fbf6e8; border: 1px solid #ecdcb4; color: #7d6520;
  padding: 6px 12px; border-radius: 999px; line-height: 1.6;
}
.placeholder-block {
  background: #fbf6e8; border: 1px dashed #ddc98f; border-radius: var(--radius);
  padding: 16px 20px; font-size: 13px; color: #7d6520; line-height: 1.9; margin: 20px 0;
}
.sample-badge {
  position: absolute; bottom: 12px; right: 12px; z-index: 3;
  background: rgba(35,40,42,.78); color: #fff; font-size: 10.5px;
  padding: 4px 10px; border-radius: 2px; letter-spacing: .08em;
}
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .8s ease, transform .8s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .works-grid { grid-template-columns: repeat(2, 1fr); }
  .service-grid, .column-grid, .reason-grid, .price-cards, .related-grid { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); }
  .flow-step:nth-child(3) { border-right: none; }
  .flow-step:nth-child(n+4) { border-top: 1px solid var(--line); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
  .trust-strip ul { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .nav { display: none; }
  .nav-toggle { display: flex; }
  .section { padding: 72px 0; }
  .section--tight { padding: 56px 0; }
  .hero { min-height: 84vh; }
  .cta-band__inner { grid-template-columns: 1fr; gap: 32px; }
  .contact-layout { grid-template-columns: 1fr; gap: 36px; }
  .grid-2 { grid-template-columns: 1fr; gap: 32px; }
  .issue-grid, .material-grid { grid-template-columns: 1fr; }
  .mobile-cta { display: flex; }
  body { padding-bottom: 92px; }
  .column-row { grid-template-columns: 1fr; gap: 16px; }
  .column-row__arrow { display: none; }
  .column-row__thumb { max-width: 320px; }
}

@media (max-width: 640px) {
  body { font-size: 15px; }
  .container { padding: 0 20px; }
  .section { padding: 60px 0; }
  .section-head { margin-bottom: 38px; }
  .works-grid, .service-grid, .column-grid, .reason-grid, .price-cards, .related-grid, .grid-3 { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr; }
  .flow-step { border-right: none; border-bottom: 1px solid var(--line); padding: 24px 0; }
  .flow-step:last-child { border-bottom: none; }
  .form-grid { grid-template-columns: 1fr; }
  .checkbox-group { grid-template-columns: 1fr; }
  .hero { min-height: 88vh; }
  .hero__inner { padding-bottom: 48px; }
  .hero__meta { gap: 8px 18px; font-size: 12px; }
  .btn { width: 100%; }
  .btn-row { flex-direction: column; }
  .trust-strip ul { grid-template-columns: 1fr; gap: 18px; padding: 24px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .page-hero { padding: calc(var(--header-h) + 40px) 0 44px; }
  .article-meta { gap: 12px; }
  .author-box { flex-direction: column; gap: 14px; }
}