/* ============================================
   上野信吾 公式サイト
   さわやか・わかりやすい・SEOに強いデザイン
   ============================================ */

/* ----- リセット & 基本 ----- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  font-size: 16px;
  line-height: 1.85;
  color: #1f2a37;
  background: #ffffff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  word-break: auto-phrase;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s ease, opacity .2s ease; }
a:hover { opacity: .82; }
ul, ol { padding: 0; margin: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.4; font-family: "Zen Kaku Gothic New", "Noto Sans JP", sans-serif; }
p { margin: 0 0 1em; }
:focus-visible {
  outline: 3px solid #0fa9d6;
  outline-offset: 3px;
  border-radius: 4px;
}

/* ----- カラー & 変数 ----- */
:root {
  --c-primary:  #0fa9d6;   /* 爽やかな水色 */
  --c-primary-d:#067fa3;
  --c-primary-l:#cfeefb;
  --c-accent:   #4cc4a4;   /* グリーン（健康・自然） */
  --c-accent-d: #2da084;
  --c-warm:     #f59f3a;   /* 子育て・温かみ */
  --c-text:     #1f2a37;
  --c-text-sub: #57647a;
  --c-bg:       #ffffff;
  --c-bg-soft:  #f3faff;
  --c-bg-mid:   #eaf6fc;
  --c-line:     #e1ebf3;
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --shadow-md: 0 8px 24px rgba(15, 60, 90, .08);
  --shadow-lg: 0 18px 48px rgba(15, 60, 90, .12);
}

/* ----- レイアウト ----- */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ----- ヘッダー ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--c-line);
  transition: box-shadow .25s ease;
}
.site-header.is-scrolled { box-shadow: 0 6px 18px rgba(15, 60, 90, .07); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-family: "Zen Kaku Gothic New", sans-serif;
  font-weight: 900;
  font-size: 20px;
  color: var(--c-primary-d);
  letter-spacing: .04em;
}
.brand-sub {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--c-text-sub);
  margin-top: 2px;
}
.primary-nav ul {
  display: flex;
  gap: 28px;
  align-items: center;
}
.primary-nav a {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--c-text);
  position: relative;
  padding: 6px 0;
}
.primary-nav a::after {
  content: "";
  position: absolute;
  left: 50%; right: 50%;
  bottom: 0;
  height: 2px;
  background: var(--c-primary);
  transition: left .25s, right .25s;
}
.primary-nav a:hover::after { left: 0; right: 0; }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  background: transparent;
  border: 0;
  cursor: pointer;
  position: relative;
}
.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--c-primary-d);
  margin: 6px auto;
  transition: transform .25s, opacity .25s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ----- ヒーロー ----- */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(48px, 8vw, 96px) 0 clamp(80px, 12vw, 140px);
  isolation: isolate;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse at 90% 10%, #d4f1ff 0%, transparent 55%),
    radial-gradient(ellipse at 10% 90%, #d8f4eb 0%, transparent 55%),
    linear-gradient(180deg, #f3faff 0%, #ffffff 100%);
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(15, 169, 214, .12) 1px, transparent 1.2px);
  background-size: 22px 22px;
  opacity: .35;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(24px, 5vw, 64px);
  align-items: center;
}
.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--c-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  border-radius: 999px;
  margin: 0 0 24px;
  box-shadow: 0 6px 18px rgba(15, 169, 214, .35);
}
.hero-title {
  font-size: clamp(28px, 5.2vw, 52px);
  font-weight: 900;
  line-height: 1.35;
  letter-spacing: .02em;
  color: var(--c-primary-d);
  margin: 0 0 24px;
}
.hero-title br { display: inline; }
.hero-lead {
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--c-text);
  margin: 0 0 32px;
  line-height: 1.95;
}
.hero-name {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 28px;
}
.hero-name-jp {
  font-family: "Zen Kaku Gothic New", sans-serif;
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 900;
  color: var(--c-text);
  letter-spacing: .08em;
}
.hero-name-en {
  font-size: 13px;
  letter-spacing: .25em;
  color: var(--c-text-sub);
}
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .05em;
  border-radius: 999px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform .15s, box-shadow .25s, background .25s, color .25s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--c-primary);
  color: #fff;
  box-shadow: 0 8px 22px rgba(15, 169, 214, .35);
}
.btn-primary:hover { background: var(--c-primary-d); opacity: 1; }
.btn-outline {
  background: #fff;
  color: var(--c-primary-d);
  border-color: var(--c-primary);
}
.btn-outline:hover { background: var(--c-primary-l); opacity: 1; }
.btn-line {
  background: #06c755;
  color: #fff;
  margin-top: 12px;
  box-shadow: 0 8px 22px rgba(6, 199, 85, .3);
}
.btn-line:hover { background: #05a849; opacity: 1; }

.hero-photo {
  position: relative;
  display: flex;
  justify-content: center;
}
.hero-photo::before {
  content: "";
  position: absolute;
  inset: -8% -4% -4% -4%;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-accent) 100%);
  border-radius: 50%;
  z-index: 0;
  filter: blur(0);
  opacity: .12;
}
.hero-photo img {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 460px;
  border-radius: 50%;
  background: #fff;
  box-shadow: var(--shadow-lg);
  border: 8px solid #fff;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center 20%;
}
.hero-wave {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  line-height: 0;
  pointer-events: none;
}
.hero-wave svg { width: 100%; height: 90px; display: block; }

/* ----- セクション共通 ----- */
.section {
  padding: clamp(64px, 9vw, 120px) 0;
  position: relative;
}
.section-head {
  text-align: center;
  margin-bottom: clamp(40px, 5vw, 64px);
}
.section-en {
  font-family: "Zen Kaku Gothic New", sans-serif;
  font-size: 13px;
  letter-spacing: .35em;
  color: var(--c-primary);
  font-weight: 700;
  margin: 0 0 12px;
}
.section-title {
  font-size: clamp(26px, 3.6vw, 36px);
  font-weight: 900;
  color: var(--c-text);
  letter-spacing: .04em;
  position: relative;
  display: inline-block;
  padding-bottom: 16px;
}
.section-title::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  border-radius: 2px;
  transform: translateX(-50%);
}
.section-sub {
  margin-top: 16px;
  color: var(--c-text-sub);
  font-size: 15px;
}
.section-head-light .section-en { color: rgba(255,255,255,.85); }
.section-head-light .section-title { color: #fff; }
.section-head-light .section-title::after { background: rgba(255,255,255,.7); }
.section-head-light .section-sub { color: rgba(255, 255, 255, .92); }

/* ----- Vision ----- */
.section-vision {
  background: linear-gradient(180deg, #ffffff 0%, var(--c-bg-soft) 100%);
}
.vision-body {
  max-width: 820px;
  margin: 0 auto;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 2.05;
}
.vision-body p { margin-bottom: 1.6em; }
.vision-pull {
  margin-top: 40px;
  padding: 28px 32px;
  background: #fff;
  border-left: 6px solid var(--c-primary);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  font-weight: 700;
  font-size: clamp(16px, 1.8vw, 19px);
  color: var(--c-primary-d);
  line-height: 1.85;
  box-shadow: var(--shadow-md);
}

/* ----- Profile ----- */
.section-profile { background: #fff; }
.profile-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}
.profile-list {
  background: var(--c-bg-soft);
  border-radius: var(--r-md);
  padding: 28px 32px;
  margin: 0;
}
.profile-list > div {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--c-line);
  align-items: baseline;
}
.profile-list > div:last-child { border-bottom: 0; }
.profile-list dt {
  font-weight: 700;
  color: var(--c-primary-d);
  font-size: 14px;
}
.profile-list dd { margin: 0; font-size: 15.5px; }

.career-title {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 20px;
  color: var(--c-text);
  position: relative;
  padding-left: 14px;
}
.career-title::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 5px; height: 22px;
  background: linear-gradient(180deg, var(--c-primary), var(--c-accent));
  border-radius: 3px;
  transform: translateY(-50%);
}
.timeline { position: relative; padding-left: 22px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 6px; bottom: 6px;
  width: 2px;
  background: var(--c-primary-l);
}
.timeline li {
  position: relative;
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 16px;
  padding: 8px 0;
  font-size: 15px;
  align-items: baseline;
}
.timeline li::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 16px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--c-primary);
}
.timeline .t-year {
  color: var(--c-primary-d);
  font-weight: 700;
  font-size: 13.5px;
  letter-spacing: .02em;
}
.timeline .t-year.highlight {
  color: var(--c-warm);
}
.timeline li:last-child::before {
  background: var(--c-warm);
  border-color: var(--c-warm);
  box-shadow: 0 0 0 4px rgba(245, 159, 58, .2);
}

/* ----- Activity ----- */
.section-activity { background: var(--c-bg-soft); }
.activity-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 56px;
}
.activity-card {
  background: #fff;
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform .25s, box-shadow .25s;
}
.activity-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.activity-image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--c-bg-mid);
}
.activity-image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.activity-card:hover .activity-image img { transform: scale(1.05); }
.activity-card h3 {
  font-size: 18px;
  margin: 22px 22px 10px;
  color: var(--c-primary-d);
}
.activity-card p {
  margin: 0 22px 24px;
  font-size: 14.5px;
  color: var(--c-text-sub);
  line-height: 1.85;
}

.papers {
  background: #fff;
  border-radius: var(--r-md);
  padding: clamp(28px, 4vw, 40px);
  box-shadow: var(--shadow-md);
}
.papers-title {
  font-size: 18px;
  margin: 0 0 18px;
  color: var(--c-text);
  position: relative;
  padding-left: 14px;
}
.papers-title::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 5px; height: 20px;
  background: var(--c-accent);
  border-radius: 3px;
  transform: translateY(-50%);
}
.papers-list li {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--c-line);
  font-size: 14.5px;
  align-items: baseline;
}
.papers-list li:last-child { border-bottom: 0; }
.paper-year {
  display: inline-block;
  text-align: center;
  font-weight: 700;
  color: #fff;
  background: var(--c-accent);
  border-radius: 999px;
  padding: 2px 0;
  font-size: 12px;
  letter-spacing: .04em;
}
.paper-text em { font-style: italic; color: var(--c-primary-d); }

/* ----- Pledge ----- */
.section-pledge {
  background:
    linear-gradient(135deg, var(--c-primary) 0%, var(--c-accent) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.section-pledge::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(255, 255, 255, .18) 1px, transparent 1.2px);
  background-size: 28px 28px;
  opacity: .4;
  pointer-events: none;
}
.section-pledge .container { position: relative; }
.pledge-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  counter-reset: pledge;
}
.pledge-card {
  background: #fff;
  color: var(--c-text);
  padding: 36px 32px 32px;
  border-radius: var(--r-md);
  box-shadow: 0 14px 40px rgba(0, 0, 0, .12);
  position: relative;
  transition: transform .2s;
}
.pledge-card:hover { transform: translateY(-4px); }
.pledge-card:nth-child(5) {
  grid-column: 1 / -1;
}
.pledge-num {
  display: inline-block;
  font-family: "Zen Kaku Gothic New", sans-serif;
  font-size: 28px;
  font-weight: 900;
  color: var(--c-primary);
  letter-spacing: .05em;
  position: relative;
  padding-bottom: 8px;
  margin-bottom: 14px;
}
.pledge-num::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 36px; height: 3px;
  background: var(--c-accent);
  border-radius: 2px;
}
.pledge-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--c-primary-d);
  margin: 0 0 14px;
  line-height: 1.55;
}
.pledge-card p {
  font-size: 14.5px;
  color: var(--c-text-sub);
  line-height: 1.95;
  margin: 0;
}

/* ----- Voice ----- */
.section-voice { background: #fff; }
.voice-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(24px, 4vw, 48px);
  max-width: 980px;
  margin: 0 auto;
  background: var(--c-bg-soft);
  border-radius: var(--r-md);
  padding: clamp(28px, 4vw, 48px);
  position: relative;
  box-shadow: var(--shadow-md);
}
.voice-card::before {
  content: "“";
  position: absolute;
  top: 14px; left: 24px;
  font-size: 110px;
  font-family: Georgia, serif;
  line-height: 1;
  color: var(--c-primary-l);
  font-weight: 900;
  pointer-events: none;
}
.voice-photo img {
  width: 100%;
  border-radius: 50%;
  aspect-ratio: 1/1;
  object-fit: cover;
  border: 6px solid #fff;
  box-shadow: var(--shadow-md);
}
.voice-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--c-text);
}
.voice-text p { margin-bottom: 1.2em; }
.voice-text p:last-child { margin-bottom: 0; }
.voice-name {
  grid-column: 1 / -1;
  text-align: right;
  font-size: 14px;
  color: var(--c-text-sub);
  margin-top: 12px;
}
.voice-name strong {
  color: var(--c-primary-d);
  font-size: 16px;
}

/* ----- Contact ----- */
.section-contact {
  background: linear-gradient(180deg, var(--c-bg-soft) 0%, #fff 100%);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(32px, 5vw, 56px);
  align-items: start;
}
.contact-info h3 {
  font-size: 18px;
  margin: 0 0 18px;
  color: var(--c-text);
  position: relative;
  padding-left: 14px;
}
.contact-info h3::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 5px; height: 20px;
  background: linear-gradient(180deg, var(--c-primary), var(--c-accent));
  border-radius: 3px;
  transform: translateY(-50%);
}
.contact-info .sns-title { margin-top: 32px; }
.contact-list {
  background: #fff;
  border-radius: var(--r-md);
  padding: 22px 28px;
  margin: 0;
  box-shadow: var(--shadow-md);
}
.contact-list > div {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--c-line);
  align-items: baseline;
}
.contact-list > div:last-child { border-bottom: 0; }
.contact-list dt {
  font-weight: 700;
  color: var(--c-primary-d);
  font-size: 14px;
}
.contact-list dd { margin: 0; font-size: 16px; }
.contact-list a {
  color: var(--c-primary-d);
  font-weight: 500;
  text-decoration: underline;
  text-decoration-color: var(--c-primary-l);
  text-underline-offset: 4px;
}

.sns-list {
  display: grid;
  gap: 12px;
}
.sns-link {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 22px;
  background: #fff;
  border-radius: var(--r-md);
  box-shadow: var(--shadow-md);
  transition: transform .15s, box-shadow .25s;
  border: 1px solid transparent;
}
.sns-link:hover {
  transform: translateY(-2px);
  opacity: 1;
  box-shadow: var(--shadow-lg);
}
.sns-link > div { display: flex; flex-direction: column; line-height: 1.4; }
.sns-label {
  font-weight: 700;
  font-size: 15px;
  color: var(--c-text);
}
.sns-sub {
  font-size: 12.5px;
  color: var(--c-text-sub);
  margin-top: 2px;
}
.sns-fb { color: #1877f2; }
.sns-ig { color: #c13584; }
.sns-yt { color: #ff0000; }
.sns-line { color: #06c755; }

.contact-line {
  position: sticky;
  top: 92px;
}
.line-card {
  background: #fff;
  border-radius: var(--r-md);
  padding: 28px;
  text-align: center;
  box-shadow: var(--shadow-md);
  border: 2px solid #06c755;
}
.line-card-title {
  font-weight: 700;
  font-size: 18px;
  color: #06c755;
  margin: 0 0 4px;
}
.line-card-sub {
  font-size: 13px;
  color: var(--c-text-sub);
  margin: 0 0 18px;
}
.line-card img {
  margin: 0 auto;
  width: 100%;
  max-width: 200px;
  border-radius: 8px;
}

/* ----- フッター ----- */
.site-footer {
  background: #0a3a4a;
  color: #cfe7f1;
  padding: 56px 0 28px;
}
.footer-inner {
  display: grid;
  gap: 24px;
}
.footer-brand .footer-name {
  font-family: "Zen Kaku Gothic New", sans-serif;
  font-size: 22px;
  font-weight: 900;
  margin: 0 0 6px;
  color: #fff;
  letter-spacing: .08em;
}
.footer-brand .footer-role {
  font-size: 13px;
  color: #8fb4c2;
  margin: 0;
  letter-spacing: .05em;
}
.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
}
.footer-nav a {
  font-size: 14px;
  color: #cfe7f1;
}
.footer-nav a:hover { color: #fff; }
.copyright {
  margin: 0;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-size: 12.5px;
  color: #8fb4c2;
  letter-spacing: .04em;
}

/* ----- Top に戻る ----- */
.to-top {
  position: fixed;
  right: 20px; bottom: 20px;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--c-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity .25s, transform .25s, background .25s;
  z-index: 90;
}
.to-top:hover { background: var(--c-primary-d); opacity: 1; }
.to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* ----- スクロール出現アニメ ----- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ----- レスポンシブ ----- */
@media (max-width: 1024px) {
  .activity-grid { grid-template-columns: repeat(2, 1fr); }
  .activity-grid .activity-card:last-child { grid-column: 1 / -1; max-width: 540px; margin: 0 auto; width: 100%; }
}

@media (max-width: 880px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-photo { order: -1; max-width: 320px; margin: 0 auto; }
  .hero-photo img { max-width: 320px; }
  .profile-grid { grid-template-columns: 1fr; }
  .voice-card { grid-template-columns: 1fr; text-align: center; }
  .voice-photo { max-width: 180px; margin: 0 auto; }
  .voice-name { text-align: center; }
  .voice-card::before { font-size: 80px; left: 50%; transform: translateX(-50%); top: 20px; }
  .pledge-list { grid-template-columns: 1fr; }
  .pledge-card:nth-child(5) { grid-column: auto; }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-line { position: static; max-width: 360px; margin: 0 auto; width: 100%; }
}

@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .primary-nav {
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--c-line);
    padding: 16px 24px 24px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s, transform .25s;
    box-shadow: 0 10px 30px rgba(15, 60, 90, .1);
  }
  .primary-nav.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .primary-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .primary-nav li {
    border-bottom: 1px solid var(--c-line);
  }
  .primary-nav li:last-child { border-bottom: 0; }
  .primary-nav a {
    display: block;
    padding: 14px 4px;
    font-size: 15px;
  }
  .primary-nav a::after { display: none; }
}

@media (max-width: 540px) {
  .container { padding: 0 18px; }
  .timeline li { grid-template-columns: 1fr; gap: 2px; }
  .timeline .t-year { font-size: 12.5px; }
  .profile-list > div,
  .contact-list > div { grid-template-columns: 80px 1fr; }
  .activity-grid { grid-template-columns: 1fr; gap: 22px; }
  .activity-grid .activity-card:last-child { max-width: none; }
  .hero-cta .btn { width: 100%; }
}

/* ----- 印刷 ----- */
@media print {
  .site-header, .to-top, .nav-toggle, .hero-cta { display: none; }
  body { color: #000; }
  a { color: #000; text-decoration: underline; }
}