:root {
  color-scheme: dark;
  --ink: #f6ecd4;
  --muted: #b8a888;
  --paper: #100c08;
  --panel: #1a140e;
  --line: rgba(214, 168, 88, 0.28);
  --gold: #e0b25a;
  --cinnabar: #c44b32;
  --ash: #9f927c;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 0%, rgba(196, 75, 50, 0.14), transparent 28%),
    radial-gradient(circle at 92% 8%, rgba(224, 178, 90, 0.12), transparent 26%),
    linear-gradient(180deg, #17110b 0%, var(--paper) 48%);
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
}
body::before {
  content: "";
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.09;
  background-image:
    linear-gradient(rgba(246, 236, 212, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(246, 236, 212, 0.08) 1px, transparent 1px);
  background-size: 100% 28px, 28px 100%;
  mask-image: linear-gradient(180deg, black, transparent 88%);
}
button, input, a { font: inherit; color: inherit; }
a { text-decoration: none; }
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.gate[hidden],
.app[hidden],
.gate-error[hidden] {
  display: none !important;
}
.gate {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 36px 16px;
}
.gate-card {
  position: relative;
  width: min(460px, 100%);
  padding: 48px 40px 40px;
  background:
    linear-gradient(180deg, rgba(255, 236, 196, 0.03), transparent 30%),
    var(--panel);
  border: 1px solid var(--line);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.42);
}
.seal {
  position: absolute;
  top: 22px;
  right: 22px;
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border: 2px solid var(--cinnabar);
  color: var(--cinnabar);
  font-family: "ZCOOL XiaoWei", "Songti SC", serif;
  font-size: 28px;
  transform: rotate(-8deg);
  opacity: 0.92;
}
.kicker, .brand small, .lede, .rows span, .grade-links a {
  font-family: "PingFang SC", "Hiragino Sans GB", sans-serif;
}
.kicker {
  margin: 0;
  color: var(--gold);
  letter-spacing: 0.28em;
  font-size: 11px;
}
.gate h1 {
  margin: 10px 0 0;
  font-family: "ZCOOL XiaoWei", "Songti SC", serif;
  font-size: clamp(56px, 10vw, 84px);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: 0.08em;
}
.gate-copy, .lede {
  margin: 14px 0 0;
  max-width: 36ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}
.gate form { display: grid; gap: 10px; margin-top: 28px; }
.gate label { color: var(--ash); font-size: 13px; letter-spacing: 0.12em; }
.gate input {
  appearance: none;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  padding: 12px 2px;
  font-size: 18px;
}
.gate button, .nav-toggle {
  appearance: none;
  margin-top: 8px;
  border: 1px solid var(--gold);
  background: transparent;
  color: var(--gold);
  padding: 12px 18px;
  letter-spacing: 0.18em;
  cursor: pointer;
}
.gate-error { margin: 0; color: #f0b2a4; }

.app { min-height: 100vh; }
.mast, .page { width: min(1040px, calc(100% - 32px)); margin: 0 auto; }
.mast {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 16px 0;
  background: rgba(16, 12, 8, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(224, 178, 90, 0.12);
}
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: var(--cinnabar);
  color: #fff4e8;
  font-family: "ZCOOL XiaoWei", "Songti SC", serif;
  font-size: 24px;
}
.brand strong {
  display: block;
  font-family: "ZCOOL XiaoWei", "Songti SC", serif;
  font-size: 22px;
  font-weight: 400;
  letter-spacing: 0.06em;
}
.brand small {
  display: block;
  margin-top: 3px;
  color: var(--gold);
  letter-spacing: 0.16em;
  font-size: 10px;
}
.nav-toggle { display: none; margin: 0 0 0 auto; }
.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 4px 16px;
  margin-left: auto;
}
.site-nav a {
  padding: 8px 0;
  color: var(--muted);
  font-family: "PingFang SC", sans-serif;
  font-size: 14px;
  letter-spacing: 0.06em;
}
.site-nav a:hover { color: var(--gold); }

.page { padding: 28px 0 80px; min-width: 0; }
.page-title {
  margin: 8px 0 0;
  font-family: "ZCOOL XiaoWei", "Songti SC", serif;
  font-size: clamp(40px, 7vw, 58px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.1em;
}
.shelf {
  display: grid;
  grid-template-columns: 148px minmax(0, 1fr);
  gap: 10px 28px;
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 92px;
}
.shelf h2 {
  margin: 6px 0 0;
  color: var(--gold);
  font-family: "ZCOOL XiaoWei", "Songti SC", serif;
  font-size: 22px;
  font-weight: 400;
  letter-spacing: 0.08em;
  line-height: 1.4;
}
.shelf-body { min-width: 0; }
.rows {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 28px;
  margin: 0;
  padding: 0;
}
.rows li { min-width: 0; }
.rows a,
.rows .pending-entry {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
  height: 100%;
  min-height: 52px;
  padding: 10px 10px 10px 12px;
  border-bottom: 1px solid rgba(224, 178, 90, 0.12);
}
.rows strong {
  font-family: "ZCOOL XiaoWei", "Songti SC", serif;
  font-size: 22px;
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1.25;
}
.rows span {
  color: var(--ash);
  font-size: 13px;
  line-height: 1.45;
}
.rows a.is-key {
  background: linear-gradient(90deg, rgba(196, 75, 50, 0.16), rgba(224, 178, 90, 0.05) 48%, transparent 82%);
  box-shadow: inset 2px 0 0 var(--cinnabar);
}
.rows a:hover {
  background: linear-gradient(90deg, rgba(196, 75, 50, 0.12), transparent 70%);
}
.rows a:hover strong { color: #fff6df; }

.drills {
  margin-top: 14px;
  padding: 12px 14px 6px;
  border: 1px solid rgba(224, 178, 90, 0.24);
  background: rgba(224, 178, 90, 0.045);
}
.drills h3 {
  margin: 0 0 8px;
  color: var(--gold);
  font-family: "ZCOOL XiaoWei", "Songti SC", serif;
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 0.14em;
}
.grade {
  display: grid;
  grid-template-columns: 4.6em minmax(0, 1fr);
  gap: 8px 12px;
  align-items: start;
  padding: 8px 0;
  border-top: 1px solid rgba(224, 178, 90, 0.12);
}
.drills h4 {
  margin: 0;
  padding-top: 8px;
  color: var(--cinnabar);
  font-family: "ZCOOL XiaoWei", "Songti SC", serif;
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0.12em;
  line-height: 1.4;
}
.grade-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-width: 0;
}
.grade-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 6px 12px;
  border: 1px solid rgba(224, 178, 90, 0.28);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.3;
}
.grade-links a:hover {
  border-color: var(--gold);
  color: var(--gold);
}

@media (max-width: 760px) {
  .mast, .page { width: min(1040px, calc(100% - 28px)); }
  .nav-toggle { display: inline-flex; }
  .site-nav {
    display: none;
    position: absolute;
    top: 76px;
    left: 16px;
    right: 16px;
    padding: 8px 16px;
    background: #1c150f;
    border: 1px solid var(--line);
    flex-direction: column;
    gap: 0;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 12px 0; }
  .shelf {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }
  .rows { grid-template-columns: minmax(0, 1fr); }
  .rows strong { font-size: 20px; }
  .grade { grid-template-columns: minmax(0, 1fr); gap: 6px; }
  .drills h4 { padding-top: 0; }
}

.pending-entry { border-left: 2px solid var(--ash); }
.entry-status {
  display: inline-block;
  margin-left: 6px;
  padding: 2px 6px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: "PingFang SC", sans-serif;
  font-size: 11px;
  vertical-align: middle;
  letter-spacing: 0;
}