/* =====================================================================
   暖色专业风 · 个人网站样式
   纯 CSS，无外部依赖、无字体请求，离线可用，利于公安备案审核稳定性。
   ===================================================================== */

:root {
  --bg: #FBF7F1;          /* 暖纸白 */
  --surface: #FFFFFF;
  --surface-2: #F6EFE6;   /* 暖灰卡 */
  --ink: #2E2A26;         /* 暖近黑 */
  --muted: #7A736B;       /* 次要文字 */
  --accent: #D97745;      /* 陶土橙（主色） */
  --accent-dark: #B85C30;
  --accent-soft: #F3E3D6; /* 浅橙底 */
  --line: #ECE3D8;        /* 分隔线 */
  --radius: 16px;
  --shadow: 0 10px 30px rgba(120, 90, 60, 0.10);
  --maxw: 960px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- 导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 247, 241, 0.82);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__brand {
  font-weight: 800;
  font-size: 20px;
  color: var(--ink);
  letter-spacing: 0.5px;
}
.nav__brand span { color: var(--accent); }
.nav__links { display: flex; gap: 26px; }
.nav__links a {
  color: var(--muted);
  font-weight: 600;
  font-size: 15px;
}
.nav__links a:hover { color: var(--accent-dark); text-decoration: none; }
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav__toggle span {
  width: 24px; height: 2px; background: var(--ink); border-radius: 2px;
}

/* ---------- Hero ---------- */
.hero {
  padding: 90px 20px 70px;
  background:
    radial-gradient(1200px 400px at 80% -10%, var(--accent-soft), transparent 60%),
    linear-gradient(180deg, #FDFAF5, var(--bg));
}
.hero__inner { max-width: var(--maxw); margin: 0 auto; text-align: center; }
.hero__eyebrow {
  letter-spacing: 3px; font-size: 12px; font-weight: 700;
  color: var(--accent); margin: 0 0 14px;
}
.hero__name {
  font-size: clamp(40px, 8vw, 68px);
  margin: 0; line-height: 1.1; font-weight: 800;
}
.hero__role {
  font-size: clamp(18px, 3vw, 24px);
  color: var(--accent-dark); font-weight: 700; margin: 12px 0 0;
}
.hero__desc {
  max-width: 620px; margin: 22px auto 0; color: var(--muted); font-size: 17px;
}
.hero__actions { margin-top: 32px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block; padding: 12px 26px; border-radius: 999px;
  font-weight: 700; font-size: 15px; transition: transform .15s ease, box-shadow .15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn--primary { background: var(--accent); color: #fff; box-shadow: var(--shadow); }
.btn--primary:hover { background: var(--accent-dark); }
.btn--ghost { border: 1.5px solid var(--line); color: var(--ink); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent-dark); }

/* ---------- 通用 section ---------- */
.section { padding: 70px 20px; }
.section--alt { background: var(--surface-2); }
.section__inner { max-width: var(--maxw); margin: 0 auto; }
.section__title {
  font-size: clamp(26px, 4vw, 34px); font-weight: 800; margin: 0 0 36px;
  position: relative; padding-left: 16px;
}
.section__title::before {
  content: ""; position: absolute; left: 0; top: 6px; bottom: 6px;
  width: 5px; border-radius: 4px; background: var(--accent);
}

/* ---------- 关于我 ---------- */
.about { display: flex; gap: 36px; align-items: flex-start; flex-wrap: wrap; }
.about__avatar {
  flex: 0 0 140px; width: 140px; height: 140px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 52px; font-weight: 800; box-shadow: var(--shadow);
}
.about__body { flex: 1 1 320px; }
.about__body p { margin: 0 0 16px; color: #534b44; }
.about__facts { list-style: none; padding: 0; margin: 22px 0 0; display: flex; gap: 28px; flex-wrap: wrap; }
.about__facts li { font-size: 15px; color: var(--muted); }
.about__facts strong { display: block; color: var(--ink); font-size: 13px; letter-spacing: 1px; }

/* ---------- 技能 ---------- */
.skills {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px;
}
.skill-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow);
}
.skill-card h3 { margin: 0 0 14px; font-size: 17px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  background: var(--accent-soft); color: var(--accent-dark);
  padding: 6px 12px; border-radius: 999px; font-size: 13px; font-weight: 600;
}

.skills__subtitle { margin: 44px 0 18px; font-size: 18px; }
.bars { display: grid; gap: 14px; }
.bar { display: grid; grid-template-columns: 140px 1fr; align-items: center; gap: 14px; }
.bar__label { font-size: 14px; color: var(--muted); font-weight: 600; }
.bar__track { background: var(--surface); border: 1px solid var(--line); border-radius: 999px; height: 12px; overflow: hidden; }
.bar__track i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-dark)); border-radius: 999px; }

/* ---------- 联系 ---------- */
.contact { text-align: center; }
.contact__desc { color: var(--muted); margin: 0 0 22px; }
.contact__list { list-style: none; padding: 0; margin: 0 auto; max-width: 420px; display: grid; gap: 12px; }
.contact__list li {
  display: flex; justify-content: space-between; gap: 16px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 12px; padding: 14px 18px; box-shadow: var(--shadow);
}
.contact__list span { color: var(--muted); font-weight: 600; }

/* ---------- 页脚 + 备案 ---------- */
.footer { background: #2E2A26; color: #d9d2c8; padding: 34px 20px; }
.footer__inner { max-width: var(--maxw); margin: 0 auto; text-align: center; }
.footer__copy { margin: 0 0 14px; font-size: 14px; color: #b6aea2; }
.beian { display: flex; gap: 12px; justify-content: center; align-items: center; flex-wrap: wrap; font-size: 13px; }
.beian a { color: #e7c9b4; }
.beian a:hover { color: #fff; text-decoration: none; }
.beian__sep { color: #6b635a; }
.beian__icon { vertical-align: -2px; margin-right: 4px; border-radius: 2px; }
.beian__icon--svg { color: #e7c9b4; }
.footer__links { margin: 14px 0 0; font-size: 13px; }
.footer__links a { color: #b6aea2; }

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  .nav__toggle { display: flex; }
  .nav__links {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0; background: var(--bg);
    border-bottom: 1px solid var(--line); overflow: hidden;
    max-height: 0; transition: max-height .25s ease;
  }
  .nav__links.open { max-height: 240px; }
  .nav__links a { padding: 14px 20px; border-top: 1px solid var(--line); }
  .bar { grid-template-columns: 100px 1fr; }
}