/* 税理士法人 千葉中央会計 — 大手系・誠実・余白 */
* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #ffffff;
  --bg-soft: #f7f8fa;
  --bg-light: #fcfbf8;
  --navy: #1c4365;       /* ティールネイビー（メイン） */
  --navy-deep: #122c43;
  --gold: #c9a44c;       /* ゴールド微量アクセント */
  --gold-deep: #ad8b3a;
  --text: #2a3340;
  --text-soft: #5b6573;
  --line: #e3e6eb;
}

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  font-size: 15px;
  line-height: 1.95;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ===== Header ===== */
.site-header {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
}
.brand-link {
  display: inline-flex;
  flex-direction: column;
  color: var(--navy);
  text-decoration: none;
  line-height: 1.2;
}
.brand-name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.06em;
  font-family: "Noto Serif JP", serif;
}
.brand-en {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--gold-deep);
  margin-top: 4px;
}
.site-nav {
  display: flex;
  gap: 32px;
  align-items: center;
}
.site-nav a {
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
}
.site-nav a:hover { color: var(--navy); }
.site-nav .nav-cta {
  background: var(--navy);
  color: #fff;
  padding: 10px 20px;
  border-radius: 2px;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.site-nav .nav-cta:hover { background: var(--navy-deep); color: #fff; }

@media (max-width: 820px) {
  .site-nav a:not(.nav-cta) { display: none; }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--navy-deep);
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
  filter: grayscale(20%) saturate(0.85);
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(18,44,67,0.95) 0%, rgba(18,44,67,0.78) 45%, rgba(28,67,101,0.55) 100%);
}
.hero-inner {
  position: relative;
  z-index: 1;
  padding: 96px 32px;
  max-width: 1140px;
}
.hero-eyebrow {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--gold);
  margin-bottom: 28px;
  padding-left: 16px;
  border-left: 3px solid var(--gold);
  font-weight: 700;
  font-family: "Helvetica Neue", Arial, sans-serif;
}
.hero-title {
  font-family: "Noto Serif JP", serif;
  font-size: 42px;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.55;
  margin-bottom: 28px;
  color: #ffffff;
  max-width: 720px;
}
.hero-lead {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 48px;
  line-height: 2.05;
  max-width: 600px;
}
.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-block;
  background: var(--gold);
  color: var(--navy-deep);
  font-weight: 700;
  font-size: 14px;
  padding: 18px 36px;
  text-decoration: none;
  letter-spacing: 0.1em;
  border-radius: 2px;
  transition: all 0.2s;
}
.btn-primary:hover { background: var(--gold-deep); color: #fff; }
.btn-ghost {
  display: inline-block;
  background: transparent;
  color: #ffffff;
  font-weight: 500;
  font-size: 14px;
  padding: 18px 36px;
  text-decoration: none;
  letter-spacing: 0.1em;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 2px;
  transition: all 0.2s;
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.1); border-color: #fff; }

@media (max-width: 720px) {
  .hero { min-height: 540px; }
  .hero-title { font-size: 28px; line-height: 1.5; }
  .hero-inner { padding: 80px 24px; }
}

/* ===== Metrics ===== */
.metrics {
  background: var(--bg);
  padding: 72px 0;
  border-bottom: 1px solid var(--line);
}
.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.metric {
  text-align: center;
  border-right: 1px solid var(--line);
  padding: 12px 16px;
}
.metric:last-child { border-right: none; }
.metric-num {
  font-family: "Noto Serif JP", serif;
  font-size: 44px;
  font-weight: 700;
  color: var(--navy);
  line-height: 1;
  display: block;
}
.metric-unit {
  font-size: 14px;
  font-weight: 400;
  margin-left: 4px;
  color: var(--text);
}
.metric-label {
  font-size: 12px;
  color: var(--text-soft);
  margin-top: 14px;
  letter-spacing: 0.08em;
  display: block;
}
@media (max-width: 720px) {
  .metric-grid { grid-template-columns: repeat(2, 1fr); gap: 28px 0; }
  .metric:nth-child(2n) { border-right: none; }
  .metric-num { font-size: 32px; }
}

/* ===== Section common ===== */
.section-label {
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--gold-deep);
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
  margin-bottom: 12px;
}
.section-title {
  font-family: "Noto Serif JP", serif;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--navy);
  margin-bottom: 32px;
  line-height: 1.55;
}
.section-title--center { text-align: center; margin-bottom: 24px; }
.section-lead {
  text-align: center;
  color: var(--text-soft);
  font-size: 15px;
  margin-bottom: 56px;
  line-height: 2;
}
.lead-text {
  font-size: 16px;
  color: var(--text);
  margin-bottom: 20px;
  line-height: 2;
  font-weight: 500;
}

/* ===== About ===== */
.about {
  padding: 120px 0;
  background: var(--bg);
}
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.about-text p {
  margin-bottom: 18px;
  color: var(--text-soft);
  line-height: 2.05;
  font-size: 14.5px;
}
.about-image img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  filter: saturate(0.85);
}
@media (max-width: 820px) {
  .about-inner { grid-template-columns: 1fr; gap: 40px; }
  .about-image img { height: 320px; }
}

/* ===== Services ===== */
.services {
  padding: 120px 0;
  background: var(--bg-soft);
}
.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.service-card {
  background: #ffffff;
  padding: 40px 36px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--navy);
  transition: all 0.3s;
}
.service-card:hover {
  border-top-color: var(--gold);
  box-shadow: 0 4px 24px rgba(28, 67, 101, 0.08);
}
.service-num {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--gold-deep);
  letter-spacing: 0.15em;
  margin-bottom: 10px;
}
.service-name {
  font-family: "Noto Serif JP", serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}
.service-card > p {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.95;
  margin-bottom: 16px;
}
.service-list {
  list-style: none;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
.service-list li {
  font-size: 13px;
  color: var(--text);
  padding: 4px 0 4px 18px;
  position: relative;
}
.service-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px;
  height: 1px;
  background: var(--gold-deep);
}
@media (max-width: 720px) {
  .service-grid { grid-template-columns: 1fr; }
}

/* ===== Why ===== */
.why {
  padding: 120px 0;
  background: var(--bg);
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}
.why-card {
  text-align: left;
}
.why-num {
  font-family: "Noto Serif JP", serif;
  font-size: 32px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 12px;
}
.why-card h3 {
  font-family: "Noto Serif JP", serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 14px;
  line-height: 1.6;
  letter-spacing: 0.04em;
}
.why-card p {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 2;
}
@media (max-width: 720px) {
  .why-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ===== Fees ===== */
.fees {
  padding: 120px 0;
  background: var(--bg-light);
}
.fees-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 72px;
  align-items: start;
}
.fees-text p {
  color: var(--text-soft);
  line-height: 2;
  font-size: 14.5px;
}
.fees-table table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
  border: 1px solid var(--line);
}
.fees-table tr {
  border-bottom: 1px solid var(--line);
}
.fees-table tr:last-child { border-bottom: none; }
.fees-table th, .fees-table td {
  padding: 22px 28px;
  text-align: left;
  font-size: 14.5px;
}
.fees-table th {
  background: var(--bg-soft);
  width: 50%;
  color: var(--text);
  font-weight: 500;
}
.fees-table td {
  color: var(--text);
}
.fees-table td strong {
  color: var(--navy);
  font-size: 17px;
  font-family: "Noto Serif JP", serif;
}
.fees-note {
  margin-top: 16px;
  font-size: 12px;
  color: var(--text-soft);
}
@media (max-width: 820px) {
  .fees-inner { grid-template-columns: 1fr; gap: 40px; }
}

/* ===== Process ===== */
.process {
  padding: 120px 0;
  background: var(--bg);
}
.process-list {
  list-style: none;
  max-width: 760px;
  margin: 0 auto;
}
.process-list li {
  display: flex;
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}
.process-list li:last-child { border-bottom: none; }
.process-step {
  flex-shrink: 0;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--gold-deep);
  letter-spacing: 0.15em;
  width: 60px;
  border-top: 2px solid var(--navy);
  padding-top: 12px;
}
.process-list h3 {
  font-family: "Noto Serif JP", serif;
  font-size: 19px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 10px;
  letter-spacing: 0.03em;
}
.process-list p {
  font-size: 14.5px;
  color: var(--text-soft);
  line-height: 2;
}

/* ===== Contact ===== */
.contact {
  background: var(--navy-deep);
  color: #ffffff;
  padding: 120px 0;
}
.contact-inner { text-align: center; }
.contact-title { color: #ffffff; }
.contact-lead {
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 56px;
  font-size: 15px;
  line-height: 2.05;
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 980px;
  margin: 0 auto;
}
.contact-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 32px 28px;
  text-align: left;
}
.contact-label {
  font-size: 11px;
  color: var(--gold);
  letter-spacing: 0.25em;
  margin-bottom: 12px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
}
.contact-value {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
  word-break: break-all;
  letter-spacing: 0.03em;
  line-height: 1.6;
}
.contact-note {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
}
@media (max-width: 820px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ===== Footer ===== */
.site-footer {
  background: #0a1c2c;
  color: rgba(255, 255, 255, 0.75);
  padding: 40px 0;
  font-size: 13px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-name {
  font-family: "Noto Serif JP", serif;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
  letter-spacing: 0.05em;
}
.footer-en {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin-bottom: 10px;
}
.footer-meta { font-size: 12px; line-height: 1.85; }
.footer-copy { font-size: 12px; color: rgba(255, 255, 255, 0.5); }