:root {
  --ink: #2a2826;
  --paper: #faf6ee;
  --cream: #f3ead8;
  --warm: #e8d4b8;
  --blush: #f5c4b8;
  --sage: #b8d4c4;
  --sky: #a8cce8;
  --lavender: #c8b8e8;
  --peach: #f0c8a0;
  --white: #fffcf7;
  --shadow: 3px 3px 0 var(--ink);
  --shadow-lg: 5px 5px 0 var(--ink);
  --radius: 1.25rem;
  --radius-pill: 999px;
  --font-display: "Noto Serif SC", "Songti SC", "STSong", serif;
  --font-body: "DM Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-en: "Syne", sans-serif;

  --cat-zhayan: var(--lavender);
  --cat-xiaocheng: var(--sky);
  --cat-haowu: var(--sage);
  --cat-shiqu: var(--peach);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  background-color: var(--paper);
  background-image:
    radial-gradient(circle at 12% 18%, rgba(200, 184, 232, 0.35) 0%, transparent 42%),
    radial-gradient(circle at 88% 12%, rgba(168, 204, 232, 0.3) 0%, transparent 38%),
    radial-gradient(circle at 72% 82%, rgba(240, 200, 160, 0.28) 0%, transparent 40%),
    radial-gradient(circle at 8% 78%, rgba(184, 212, 196, 0.25) 0%, transparent 35%);
  background-attachment: fixed;
  overflow-x: hidden;
  line-height: 1.65;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 0;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: min(960px, calc(100% - 2.5rem));
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

/* ── Header ── */

.site-header {
  position: fixed;
  top: 1rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 1rem;
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow);
  font-size: 0.85rem;
}

.site-header a {
  font-weight: 600;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.site-header a:hover {
  opacity: 1;
}

.header-divider {
  width: 1px;
  height: 1rem;
  background: var(--ink);
  opacity: 0.25;
}

.header-brand {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.04em;
}

/* ── Hero ── */

.hero {
  padding: 6.5rem 0 3rem;
  text-align: center;
}

.hero-inner {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.hero-portrait {
  position: relative;
  width: min(11rem, 42vw);
  margin-inline: auto;
}

.portrait-stamp {
  position: absolute;
  top: -0.5rem;
  right: -1.25rem;
  z-index: 3;
  padding: 0.35rem 0.65rem;
  background: var(--blush);
  border: 2px solid var(--ink);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow);
  font-size: 0.65rem;
  font-weight: 700;
  transform: rotate(12deg);
  white-space: nowrap;
}

.portrait-back {
  position: absolute;
  inset: 0.4rem;
  background: var(--sage);
  border: 2px solid var(--ink);
  border-radius: 50%;
  transform: rotate(-8deg);
  box-shadow: var(--shadow);
}

.portrait-frame {
  position: relative;
  margin: 0;
  aspect-ratio: 1;
  border: 3px solid var(--ink);
  border-radius: 50%;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--cream);
  transform: rotate(3deg);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-portrait:hover .portrait-frame {
  transform: rotate(0deg) translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--ink);
}

.portrait-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 18%;
}

.hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.2rem, 8vw, 3.4rem);
  letter-spacing: 0.06em;
  line-height: 1.2;
}

.hero-title-en {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--font-en);
  font-size: clamp(0.75rem, 2.5vw, 0.9rem);
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.45;
}

.hero-slogan {
  margin: 0.75rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1rem, 3vw, 1.2rem);
  color: rgba(42, 40, 38, 0.75);
  letter-spacing: 0.12em;
}

.hero-intro {
  margin: 1.25rem auto 0;
  max-width: 28rem;
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(42, 40, 38, 0.82);
}

/* floating doodles */
.doodle {
  position: absolute;
  pointer-events: none;
  opacity: 0.55;
}

.doodle--leaf {
  top: 5rem;
  left: clamp(0.5rem, 6vw, 4rem);
  width: 3rem;
  transform: rotate(-25deg);
}

.doodle--star {
  top: 8rem;
  right: clamp(0.5rem, 6vw, 4rem);
  width: 2.5rem;
  transform: rotate(15deg);
}

.doodle--wave {
  bottom: 2rem;
  left: clamp(1rem, 10vw, 6rem);
  width: 4rem;
  opacity: 0.35;
}

/* ── About strip ── */

.about-strip {
  margin: 2rem 0 3rem;
  padding: 1.5rem 1.75rem;
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
}

.about-strip::before {
  content: "关于";
  position: absolute;
  top: -0.7rem;
  left: 1.25rem;
  padding: 0.15rem 0.6rem;
  background: var(--cream);
  border: 2px solid var(--ink);
  border-radius: var(--radius-pill);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.about-strip p {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.98rem;
  line-height: 1.85;
  color: rgba(42, 40, 38, 0.88);
}

/* ── Categories ── */

.categories {
  margin-bottom: 2.5rem;
}

.categories-label {
  margin: 0 0 1rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.5;
  text-align: center;
}

.category-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

.cat-tab {
  padding: 0.55rem 1rem;
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: var(--radius-pill);
  box-shadow: 2px 2px 0 var(--ink);
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s;
}

.cat-tab:hover {
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 var(--ink);
}

.cat-tab.active {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow);
}

.cat-tab[data-cat="all"].active { background: var(--cream); }
.cat-tab[data-cat="zhayan"].active { background: var(--cat-zhayan); }
.cat-tab[data-cat="xiaocheng"].active { background: var(--cat-xiaocheng); }
.cat-tab[data-cat="haowu"].active { background: var(--cat-haowu); }
.cat-tab[data-cat="shiqu"].active { background: var(--cat-shiqu); }

.cat-desc {
  margin: 1.25rem auto 0;
  max-width: 32rem;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(42, 40, 38, 0.65);
  min-height: 1.4em;
  transition: opacity 0.25s;
}

/* ── Posts list ── */

.posts-section {
  padding-bottom: 5rem;
}

.posts-list {
  display: flex;
  flex-direction: column;
}

.post-card {
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1.75rem;
  margin-bottom: 3rem;
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
  text-align: left;
}

.post-card:last-child {
  margin-bottom: 0;
}

.post-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
}

.post-card--zhayan { border-left: 4px solid var(--cat-zhayan); }
.post-card--xiaocheng { border-left: 4px solid var(--cat-xiaocheng); }
.post-card--haowu { border-left: 4px solid var(--cat-haowu); }
.post-card--shiqu { border-left: 4px solid var(--cat-shiqu); }

.post-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: 0.02em;
}

.post-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.post-cat {
  padding: 0.2rem 0.55rem;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius-pill);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.post-cat--zhayan { background: var(--cat-zhayan); }
.post-cat--xiaocheng { background: var(--cat-xiaocheng); }
.post-cat--haowu { background: var(--cat-haowu); }
.post-cat--shiqu { background: var(--cat-shiqu); }

.post-date {
  font-size: 0.72rem;
  opacity: 0.5;
}

.post-excerpt {
  margin: 0.65rem 0 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: rgba(42, 40, 38, 0.72);
  flex: 1;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 1rem;
}

.post-tag {
  font-size: 0.68rem;
  opacity: 0.55;
}

.post-tag::before {
  content: "#";
}

.post-draft {
  margin-top: 0.75rem;
  font-size: 0.72rem;
  font-weight: 600;
  opacity: 0.45;
  font-style: italic;
}

.posts-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem 1rem;
  font-family: var(--font-display);
  opacity: 0.5;
}

/* ── Modal ── */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: rgba(42, 40, 38, 0.35);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s;
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  width: min(36rem, 100%);
  max-height: min(80vh, 600px);
  overflow-y: auto;
  padding: 2rem;
  background: var(--paper);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: 8px 8px 0 var(--ink);
  transform: translateY(12px) scale(0.98);
  transition: transform 0.25s ease;
}

.modal-overlay.open .modal {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.25rem;
  height: 2.25rem;
  display: grid;
  place-items: center;
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: 50%;
  box-shadow: 2px 2px 0 var(--ink);
  font-size: 1.1rem;
  line-height: 1;
}

.modal-wrap {
  position: relative;
}

.modal-cat {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.25rem 0.6rem;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: 700;
}

.modal-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 1.4;
  letter-spacing: 0.02em;
}

.modal-date {
  margin: 0.5rem 0 1.25rem;
  font-size: 0.8rem;
  opacity: 0.5;
}

.modal-body {
  font-size: 0.95rem;
  line-height: 1.8;
  color: rgba(42, 40, 38, 0.88);
}

.modal-body p {
  margin: 0 0 1rem;
}

.modal-note {
  margin-top: 1.5rem;
  padding: 0.85rem 1rem;
  background: var(--cream);
  border: 1.5px dashed rgba(42, 40, 38, 0.25);
  border-radius: 0.75rem;
  font-size: 0.82rem;
  opacity: 0.7;
}

/* ── Footer ── */

.site-footer {
  padding: 2rem 0 3rem;
  text-align: center;
  font-size: 0.82rem;
  opacity: 0.55;
  border-top: 1.5px solid rgba(42, 40, 38, 0.12);
}

.site-footer a {
  font-weight: 600;
}

.site-footer a:hover {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.footer-copy {
  margin: 0.5rem 0 0;
}

/* ── Reveal ── */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ── */

@media (min-width: 640px) {
  .hero-inner {
    grid-template-columns: auto 1fr;
    text-align: left;
    gap: 2.5rem;
    align-items: center;
  }

  .hero-portrait {
    margin-inline: 0;
  }

  .hero-text {
    padding-right: 1rem;
  }
}

@media (max-width: 600px) {
  .site-header {
    width: calc(100% - 1.5rem);
    justify-content: center;
    font-size: 0.8rem;
  }

  .doodle {
    display: none;
  }

  .about-strip {
    padding: 1.25rem 1.25rem;
  }

  .cat-tab {
    font-size: 0.8rem;
    padding: 0.5rem 0.8rem;
  }
}