:root {
  --bg: #f7f2e9;
  --ink: #312a22;
  --ink-soft: #5d5348;
  --panel: rgba(255, 255, 255, 0.75);
  --line: rgba(121, 103, 89, 0.25);
  --pink: #ffeaf3;
  --blue: #e6f5ff;
  --gold: #e6bf79;
  --primary: #b04664;
  --primary-dark: #8f2d4a;
  --shadow: 0 12px 30px rgba(72, 48, 25, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 15%, #fff6dd 0%, #f7f2e9 40%, #f2ede5 100%);
}

.bg-orb {
  position: fixed;
  z-index: -1;
  border-radius: 50%;
  filter: blur(6px);
  opacity: 0.4;
}

.orb-a {
  width: 380px;
  height: 380px;
  background: #ffdce6;
  top: -120px;
  right: -90px;
}

.orb-b {
  width: 290px;
  height: 290px;
  background: #dff3ff;
  left: -90px;
  bottom: -90px;
}

.page {
  width: min(1080px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 3.6rem;
}

.hero {
  text-align: center;
  padding: 2.2rem 1rem 1.8rem;
}

.hero-tag {
  margin: 0;
  color: var(--primary);
  letter-spacing: 0.12em;
  font-size: 0.92rem;
}

h1 {
  margin: 0.4rem 0 0;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: clamp(2.5rem, 8vw, 4.2rem);
  line-height: 1.1;
  color: #241b14;
  text-shadow: 0 3px 0 rgba(255, 255, 255, 0.7);
}

.hero-sub {
  margin: 0.8rem auto 0;
  font-size: 1.04rem;
  color: var(--ink-soft);
}

.panel {
  margin-top: 1.2rem;
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 18px;
  padding: 1.3rem 1.2rem 1.4rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.6rem;
}

h2 {
  margin: 0;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 1.7rem;
}

.panel-note {
  border: 1px dashed var(--line);
  padding: 0.25rem 0.56rem;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.desc {
  margin: 0.7rem 0 1rem;
  color: var(--ink-soft);
}

.qa-grid {
  display: grid;
  gap: 0.85rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.qa-item {
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.9), rgba(255, 248, 242, 0.9));
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.85rem 0.9rem;
}

.qa-empty {
  grid-column: 1 / -1;
  border: 1px dashed var(--line);
  border-radius: 14px;
  padding: 1rem;
  text-align: center;
  color: #7e6d60;
  background: rgba(255, 255, 255, 0.55);
}

.qa-item p {
  margin: 0;
  line-height: 1.6;
}

.qa-q,
.qa-a {
  display: flex;
  gap: 0.4rem;
}

.qa-q {
  margin-bottom: 0.5rem;
}

.badge {
  font-weight: 700;
  color: var(--primary-dark);
  white-space: nowrap;
}

.entry-form,
.auth-card {
  margin-top: 1rem;
  background: rgba(255, 255, 255, 0.66);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.9rem;
}

h3 {
  margin: 0 0 0.7rem;
  font-size: 1.08rem;
}

label {
  display: block;
  margin: 0.65rem 0 0.3rem;
  font-weight: 600;
  color: #40362d;
}

textarea,
input {
  width: 100%;
  border-radius: 10px;
  border: 1px solid rgba(123, 106, 92, 0.35);
  padding: 0.68rem 0.74rem;
  font: inherit;
  background: #fffdfa;
  color: var(--ink);
  transition: border-color 0.2s ease;
}

textarea:focus,
input:focus {
  outline: none;
  border-color: var(--primary);
}

.btn {
  border: none;
  border-radius: 999px;
  padding: 0.55rem 1rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(150deg, #c95c7c, #ab3e5f);
  color: #fff;
}

.btn-primary:hover {
  filter: brightness(1.04);
}

.btn-ghost {
  background: rgba(107, 92, 79, 0.12);
  color: #4d433a;
}

.form-foot {
  margin-top: 0.55rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.7rem;
}

.msg-line {
  min-height: 1.4rem;
  margin: 0.65rem 0 0;
  color: #7d2840;
}

.note-actions {
  margin-top: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.welcome {
  margin: 0;
  color: var(--ink-soft);
}

.note-board {
  position: relative;
  margin-top: 1rem;
  min-height: 620px;
  border-radius: 16px;
  border: 1px solid rgba(126, 110, 93, 0.23);
  background:
    linear-gradient(to bottom, rgba(255, 255, 255, 0.75), rgba(247, 241, 232, 0.7)),
    repeating-linear-gradient(
      0deg,
      transparent 0,
      transparent 33px,
      rgba(118, 97, 83, 0.08) 34px
    );
  overflow: hidden;
}

.note-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  color: #7e6d60;
}

.sticky {
  position: absolute;
  width: 220px;
  min-height: 170px;
  border-radius: 10px;
  box-shadow: 0 7px 20px rgba(58, 49, 40, 0.17);
  border: 1px solid rgba(135, 117, 102, 0.22);
  padding: 0.75rem 0.72rem 0.62rem;
  cursor: grab;
  user-select: none;
}

.sticky:active {
  cursor: grabbing;
}

.sticky.pink {
  background: var(--pink);
}

.sticky.blue {
  background: var(--blue);
}

.sticky-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.45rem;
  border-bottom: 1px dashed rgba(122, 104, 90, 0.2);
  padding-bottom: 0.3rem;
}

.sticky-author {
  font-weight: 700;
  color: #8b2445;
}

.sticky.blue .sticky-author {
  color: #1c6e9b;
}

.sticky-del {
  border: none;
  background: transparent;
  color: #85776b;
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
}

.sticky-body {
  margin: 0;
  min-height: 86px;
  line-height: 1.55;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.sticky-time {
  margin-top: 0.35rem;
  text-align: right;
  font-size: 0.86rem;
  color: #7a6a5d;
}

.hidden {
  display: none !important;
}

.section-animate {
  animation: rise 0.65s ease both;
}

.section-animate:nth-child(2) {
  animation-delay: 0.08s;
}

.section-animate:nth-child(3) {
  animation-delay: 0.16s;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 860px) {
  .page {
    width: min(1080px, calc(100% - 1rem));
    padding-top: 1.1rem;
  }

  .panel {
    padding: 1rem;
  }

  h2 {
    font-size: 1.45rem;
  }

  .note-board {
    min-height: 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.8rem;
    background: rgba(255, 255, 255, 0.64);
    padding: 0.8rem;
  }

  .sticky {
    position: static;
    width: auto;
    min-height: 0;
    transform: none !important;
    cursor: default;
  }

  .note-empty {
    position: static;
  }
}