* { box-sizing: border-box; }
html { font-size: 17px; }
body { max-width: 780px; margin: 0 auto; padding: 0 1.2rem 4rem;
  font-family: "Inter", -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6; color: #1a1a1a; background: #fff; }
header { padding: 2rem 0 1.5rem; border-bottom: 2px solid #1a1a1a;
  display: flex; justify-content: space-between; align-items: baseline;
  flex-wrap: wrap; gap: 0.8rem; }
.logo { font-weight: 700; font-size: 1.1rem; letter-spacing: -0.02em;
  text-decoration: none; color: #1a1a1a; }
.logo::after { content: " /"; color: #888; font-weight: 400; }
nav a { margin-left: 1.2rem; color: #555; text-decoration: none; font-size: 0.95rem;
  border-bottom: 1px solid transparent; transition: border-color 0.15s; }
nav a:hover { border-bottom-color: #1a1a1a; color: #1a1a1a; }
main { padding-top: 2rem; }
.hero { margin-bottom: 3rem; }
.hero h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 0.8rem;
  letter-spacing: -0.03em; font-weight: 700; }
.hero .tagline { font-size: 1.05rem; color: #555; margin: 0; }
.hero .status { display: inline-block; margin-top: 1rem; font-size: 0.85rem;
  color: #555; background: #f0f0f0; padding: 0.3rem 0.7rem; border-radius: 4px; }
.hero .status::before { content: "● "; color: #2d9d5c; }
section h2 { font-size: 1.1rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: #888; font-weight: 600; margin: 3rem 0 1.5rem; }
.projects { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
@media (max-width: 640px) { .projects { grid-template-columns: 1fr; } }
.project { border: 1px solid #e5e5e5; border-radius: 8px; padding: 1.3rem;
  transition: border-color 0.15s; }
.project:hover { border-color: #1a1a1a; }
.project h3 { margin: 0 0 0.5rem; font-size: 1.05rem; font-weight: 600; }
.project h3 a { color: #1a1a1a; text-decoration: none; }
.project h3 a:hover { text-decoration: underline; }
.project p { margin: 0 0 0.9rem; color: #555; font-size: 0.95rem; line-height: 1.5; }
.project .stack { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.project .stack span { font-family: ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 0.78rem; color: #666; background: #f5f5f5;
  padding: 0.15rem 0.5rem; border-radius: 3px; }
.about-text { max-width: 640px; }
.about-text p { color: #333; }
.about-text a { color: #1a1a1a; }
.about-text a:hover { background: #fff3a8; }
.contact { margin-top: 2rem; }
.contact a { display: inline-block; margin-right: 1.5rem; color: #1a1a1a;
  text-decoration: none; border-bottom: 2px solid #1a1a1a; padding-bottom: 2px; }
footer { margin-top: 5rem; padding-top: 2rem; border-top: 1px solid #e5e5e5;
  color: #888; font-size: 0.85rem; display: flex;
  justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; }
footer a { color: #888; text-decoration: none; }
footer a:hover { color: #1a1a1a; }