@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;700&display=swap');

html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, hgroup, menu, nav, output, ruby, section, summary, time, mark, audio, video { margin: 0; padding: 0; border: 0; font-size: 100%; font: inherit; vertical-align: baseline; } article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section { display: block; } body { line-height: 1; } ol, ul { list-style: none; } blockquote, q { quotes: none; } blockquote:before, blockquote:after, q:before, q:after { content: ''; content: none; } table { border-collapse: collapse; border-spacing: 0; }
*, *:before, *:after { box-sizing: border-box; }

:root {
  --primary-color: #3498db;
  --text-color: #34495e;
  --bg-color: #f4f7f6;
  --card-bg-color: #ffffff;
  --border-color: #e0e0e0;
  --shadow: 0 4px 6px rgba(0,0,0,0.1);
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-color);
  background-color: var(--bg-color);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding: 5rem;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem;
  background-color: var(--card-bg-color);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

h1, h2, h3 {
  color: #2c3e50;
  margin-bottom: 1rem;
  line-height: 1.3;
}
h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

p {
  margin-bottom: 1rem;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: bold;
  transition: all 0.2s ease;
}
a:hover {
  text-decoration: underline;
  opacity: 0.8;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

hr {
  border: 0;
  border-top: 1px solid var(--border-color);
  margin: 2rem 0;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  background-color: var(--primary-color);
  color: #fff;
  font-size: 1rem;
  font-weight: bold;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
}
.btn:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  text-decoration: none;
}

.form-group {
    margin-bottom: 1.5rem;
}
.form-label {
    display: block;
    margin-bottom: .5rem;
    font-weight: bold;
}
.form-control {
    width: 100%;
    padding: 10px;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    transition: border-color 0.2s ease;
}
.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}