/* 火石引擎 · 登录首页（君高智库）— 克制、权威、专业 */
@font-face {
  font-family: "JG Serif";
  src: local("Noto Serif CJK SC"), local("Noto Serif CJK"),
       url("/static/fonts/NotoSerifCJK-Regular.ttc") format("collection");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JG Serif";
  src: local("Noto Serif CJK SC"), local("Noto Serif CJK"),
       url("/static/fonts/NotoSerifCJK-Bold.ttc") format("collection");
  font-weight: 600 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JG Sans";
  src: local("Noto Sans CJK SC"), local("Noto Sans CJK"),
       url("/static/fonts/NotoSansCJK-Regular.ttc") format("collection");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JG Sans";
  src: local("Noto Sans CJK SC"), local("Noto Sans CJK"),
       url("/static/fonts/NotoSansCJK-Bold.ttc") format("collection");
  font-weight: 600 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --ink: #121212;
  --ink-soft: #2c2c2c;
  --muted: #6a6560;
  --faint: #9a948c;
  --paper: #f3f0e8;
  --panel: #fbfaf6;
  --line: #d4cec3;
  --line-strong: #b8b0a3;
  --accent: #1e3a32;
  --accent-hover: #162b25;
  --danger: #7a2e2e;
  --danger-line: #c9a0a0;
  --danger-bg: #f6ecec;
}

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

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--paper);
  color: var(--ink);
  font-family: "JG Sans", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.lg-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.lg-main {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  max-width: 1080px;
  width: 100%;
  margin: 0 auto;
  padding: 64px 48px 40px;
  gap: 0;
  align-items: center;
}

.lg-brand {
  padding: 8px 48px 8px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid var(--line);
  min-height: 440px;
}

.lg-eyebrow {
  font-family: "JG Sans", sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.28em;
  color: var(--muted);
  margin: 0 0 26px;
}

.lg-mark {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 18px;
}

.lg-mark-org,
.lg-mark-product {
  font-family: "JG Serif", "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", serif;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--ink);
}

.lg-mark-org { color: var(--ink-soft); }

.lg-mark-sep {
  color: var(--line-strong);
  font-weight: 400;
  letter-spacing: 0;
}

.lg-title {
  font-family: "JG Serif", "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", serif;
  font-size: clamp(30px, 3.6vw, 40px);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: 0.06em;
  color: var(--ink);
  margin: 0 0 24px;
  max-width: 12em;
}

.lg-rule {
  width: 40px;
  height: 1px;
  background: var(--ink);
  border: 0;
  margin: 0 0 24px;
}

.lg-lede {
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--ink-soft);
  margin: 0;
  max-width: 32em;
}

.lg-points {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  max-width: 32em;
}

.lg-points li {
  position: relative;
  padding: 12px 0 12px 16px;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  letter-spacing: 0.02em;
  line-height: 1.65;
}

.lg-points li:last-child { border-bottom: 1px solid var(--line); }

.lg-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: calc(12px + 0.825em);
  width: 6px;
  height: 1px;
  background: var(--ink);
}

.lg-auth {
  padding: 8px 0 8px 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.lg-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 36px 32px 28px;
  width: 100%;
  max-width: 360px;
  margin-left: auto;
}

.lg-panel-title {
  font-family: "JG Serif", "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", serif;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin: 0 0 8px;
  color: var(--ink);
}

.lg-panel-desc {
  margin: 0 0 26px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
}

.lg-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--ink-soft);
  margin: 0 0 10px;
}

.lg-input {
  display: block;
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--ink);
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.lg-input:focus {
  border-color: var(--ink);
  box-shadow: 0 0 0 1px var(--ink);
}

.lg-input.is-invalid {
  border-color: var(--danger-line);
}

.lg-input.is-invalid:focus {
  border-color: var(--danger);
  box-shadow: 0 0 0 1px var(--danger);
}

.lg-error {
  margin: 12px 0 16px;
  padding: 8px 10px;
  font-size: 12.5px;
  color: var(--danger);
  line-height: 1.45;
  background: var(--danger-bg);
  border-left: 2px solid var(--danger);
}

.lg-error.is-empty {
  visibility: hidden;
  background: transparent;
  border-left-color: transparent;
  padding-top: 0;
  padding-bottom: 0;
  min-height: 1.2em;
}

.lg-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 44px;
  border: 0;
  background: var(--accent);
  color: #f7f5f0;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: background 0.15s ease;
}

.lg-submit:hover { background: var(--accent-hover); }
.lg-submit:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

.lg-panel-note {
  margin: 18px 0 0;
  font-size: 11.5px;
  color: var(--faint);
  line-height: 1.55;
}

.lg-foot {
  border-top: 1px solid var(--line);
  padding: 16px 48px 24px;
  max-width: 1080px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 28px;
  justify-content: space-between;
  align-items: baseline;
}

.lg-foot-org {
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}

.lg-foot-note {
  font-size: 11.5px;
  color: var(--faint);
  letter-spacing: 0.02em;
}

@media (max-width: 900px) {
  .lg-main {
    grid-template-columns: 1fr;
    padding: 36px 28px 20px;
    align-items: start;
  }
  .lg-auth {
    order: 1;
    padding: 0 0 28px;
  }
  .lg-brand {
    order: 2;
    border-right: 0;
    border-top: 1px solid var(--line);
    padding: 28px 0 8px;
    min-height: 0;
  }
  .lg-panel {
    max-width: none;
    margin-left: 0;
  }
  .lg-points { margin-top: 24px; }
  .lg-foot {
    padding: 14px 28px 22px;
    flex-direction: column;
    gap: 4px;
  }
}

@media (max-width: 480px) {
  .lg-main { padding: 28px 20px 12px; }
  .lg-title { font-size: 26px; letter-spacing: 0.04em; }
  .lg-panel { padding: 28px 20px 22px; }
  .lg-foot { padding: 12px 20px 20px; }
  .lg-eyebrow { margin-bottom: 18px; letter-spacing: 0.2em; }
}