:root {
  --bg-main: #0d0d0d;
  --text-main: #ffffff;
  --text-sub: #aaaaaa;
  --accent: #5da9ff;
  --radius: 14px;
  --button-height: 56px;
  --max-width: 380px;
  --font-base: "IBM Plex Sans", Arial, sans-serif;
}

*,
*::before,
*::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-base);
  background: var(--bg-main);
  color: var(--text-main);
  text-align: center;
  min-height: 100vh;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  padding: 32px 16px;
}

.profile {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 32px;
  padding-top: 24px;
}

.profile-img {
  width: 100px; /* 変更：小さく */
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 12px;
  border: 2px solid rgba(255,255,255,0.1);
}

.name {
  margin: 0 0 6px;
  font-size: 1.8rem;
  font-weight: 600;
}

.tagline {
  margin: 0 0 16px;
  font-size: 1rem;
  color: var(--text-sub);
}

/* 名前下SNSアイコン横並び */
.social-icons {
  display: flex;
  gap: 24px;
  margin-bottom: 24px;
}

.social-icons a img {
  width: 28px;
  height: 28px;
  display: block;
}

/* リンクボタン縦並び・マット */
.links {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: var(--button-height);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  color: var(--text-main);
  
  background-color: #1c1c1c; /* マット色 */
  transition: background 0.15s ease, transform 0.1s ease;
}

.links a:hover {
  background-color: #2a2a2a; /* 少し明るくなるだけ */
  transform: translateY(-1px);
}

.links a:active {
  transform: translateY(0);
}

/* レスポンシブ調整 */
@media screen and (max-width: 420px) {
  .container { padding: 24px 12px; }
  .links a { height: 50px; font-size: 0.95rem; }
  .social-icons a img { width: 28px; height: 28px; }
}