/* ============================================================
   1) Design Tokens
   ============================================================ */
:root {
  --bg: #f4efea;
  --bg-alt: #e8f4ff;
  --bg-blue: #6fc2ff;
  --bg-yellow: #ffe566;
  --bg-green: #7de8a0;
  --bg-pink: #ffb3c6;

  --text: rgb(56, 56, 56);
  --text-muted: #666;

  --border: rgb(56, 56, 56);
  --border-w: 2px;
  --radius: 2px;

  --white: #ffffff;
  --shadow-sm: 2px 2px 0px rgb(56, 56, 56);
  --shadow: 4px 4px 0px rgb(56, 56, 56);
  --shadow-lg: 6px 6px 0px rgb(56, 56, 56);

  --header-h: 70px;
  --transition: 120ms ease-in-out;
  --font: "Aeonik Mono", "SF Mono", "Fira Code", "Consolas", monospace, sans-serif;
  --font-heading: var(--font);
}

html[data-theme="theme-current"] {
  --bg: #f4efea;
  --bg-alt: #e8f4ff;
  --bg-blue: #6fc2ff;
  --bg-yellow: #ffe566;
  --bg-green: #7de8a0;
  --bg-pink: #ffb3c6;
  --text: rgb(56, 56, 56);
  --text-muted: #666;
  --border: rgb(56, 56, 56);
  --border-w: 2px;
  --radius: 2px;
  --white: #ffffff;
  --shadow-sm: 2px 2px 0px rgb(56, 56, 56);
  --shadow: 4px 4px 0px rgb(56, 56, 56);
  --shadow-lg: 6px 6px 0px rgb(56, 56, 56);
  --font: "Aeonik Mono", "SF Mono", "Fira Code", "Consolas", monospace, sans-serif;
  --font-heading: var(--font);
}

html[data-theme="theme-handdrawn"] {
  --bg: #fdfbf7;
  --bg-alt: #f1eadf;
  --bg-blue: #ff4d4d;
  --bg-yellow: #fff9c4;
  --bg-green: #2d5da1;
  --bg-pink: #e5e0d8;
  --text: #2d2d2d;
  --text-muted: #6b6258;
  --border: #2d2d2d;
  --border-w: 3px;
  --radius: 16px;
  --white: #ffffff;
  --shadow-sm: 4px 4px 0px 0px #2d2d2d;
  --shadow: 8px 8px 0px 0px #2d2d2d;
  --shadow-lg: 12px 12px 0px 0px #2d2d2d;
  --font: "Patrick Hand", "Kalam", "KaiTi", "STKaiti", "Microsoft YaHei", cursive, sans-serif;
  --font-heading: "Kalam", "KaiTi", "STKaiti", "Microsoft YaHei", cursive, sans-serif;
}

html[data-theme="theme-neobrutal"] {
  --bg: #fffdf5;
  --bg-alt: #ffd93d;
  --bg-blue: #ff6b6b;
  --bg-yellow: #ffd93d;
  --bg-green: #c4b5fd;
  --bg-pink: #c4b5fd;
  --text: #000000;
  --text-muted: #000000;
  --border: #000000;
  --border-w: 4px;
  --radius: 0px;
  --white: #ffffff;
  --shadow-sm: 4px 4px 0px 0px #000000;
  --shadow: 8px 8px 0px 0px #000000;
  --shadow-lg: 12px 12px 0px 0px #000000;
  --font: "Space Grotesk", "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
  --font-heading: "Space Grotesk", "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
}

/* ============================================================
   2) Reset
   ============================================================ */
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,
textarea,
video,
button,
input {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 1.2rem;
  font-family: var(--font);
  text-decoration: none;
  vertical-align: baseline;
}

/* ============================================================
   3) Base
   ============================================================ */
html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  line-height: 1;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

html[data-theme="theme-current"] body {
  background-image: none;
}

html[data-theme="theme-handdrawn"] body {
  background-image:
    radial-gradient(#e5e0d8 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.65), rgba(253, 251, 247, 0.82));
  background-size: 24px 24px, auto;
}

html[data-theme="theme-neobrutal"] body {
  background-image:
    radial-gradient(#000000 1.5px, transparent 1.5px),
    linear-gradient(to right, rgba(0, 0, 0, 0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.08) 1px, transparent 1px);
  background-size: 20px 20px, 40px 40px, 40px 40px;
}

html.theme-fading body {
  animation: theme-fade 0.34s ease;
}

@keyframes theme-fade {
  0% {
    opacity: 1;
  }
  42% {
    opacity: 0.34;
  }
  100% {
    opacity: 1;
  }
}

a {
  color: var(--text);
  text-underline-offset: 0.22em;
}

::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

::-webkit-scrollbar-thumb {
  background: var(--text);
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

/* ============================================================
   4) Layout
   ============================================================ */
.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ============================================================
   5) Shared Components
   ============================================================ */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16.5px 22px;
  border: var(--border-w) solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 1rem;
  letter-spacing: 0.12em;
  line-height: 1;
  text-transform: uppercase;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn-primary {
  background-color: var(--bg-blue);
  box-shadow: var(--shadow);
}

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

.btn-primary:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

.btn-ghost {
  background-color: var(--white);
  box-shadow: var(--shadow);
}

.btn-ghost:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
  background-color: var(--bg-yellow);
}

.btn-ghost:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

.btn-outline {
  padding: 16.5px 40px;
  background-color: var(--white);
  box-shadow: var(--shadow);
}

.btn-outline:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
  background-color: var(--bg-green);
}

.btn-outline:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.section-header {
  margin-bottom: 48px;
}

.section-tag {
  display: inline-block;
  margin-bottom: 12px;
  padding-bottom: 4px;
  border-bottom: var(--border-w) solid var(--border);
  color: var(--text-muted);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  font-family: var(--font-heading);
}

/* ============================================================
   6) Header / Navigation
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: var(--bg);
  border-bottom: var(--border-w) solid transparent;
  transition: border-color var(--transition);
}

.site-header.scrolled {
  border-bottom-color: var(--border);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  padding-bottom: 2px;
  border-bottom: var(--border-w) solid transparent;
  color: var(--text);
  font-size: 25px;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transition: border-color var(--transition);
  font-family: var(--font-heading);
}

.logo:hover {
  border-bottom-color: var(--border);
}

.logo-dot {
  color: var(--bg-blue);
}

.nav {
  display: flex;
  align-items: center;
  margin-left: auto;
}

.nav-link {
  margin: 0 12px;
  padding: 8px 16px;
  border: var(--border-w) solid transparent;
  border-radius: var(--radius);
  color: var(--text);
  font-size: 20px;
  letter-spacing: 0.14em;
  line-height: 1;
  text-transform: uppercase;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.nav-link:hover {
  background: var(--bg-blue);
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
  transform: translate(-1px, -1px);
}

.nav-link.active {
  background: var(--text);
  border-color: var(--border);
  color: var(--bg);
}

.menu-btn {
  display: none;
  width: 36px;
  height: 36px;
  padding: 6px;
  border: var(--border-w) solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.menu-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow);
}

.menu-btn span {
  display: block;
  height: 2px;
  background: var(--text);
  transform-origin: center;
  transition: all var(--transition);
}

.menu-btn.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-btn.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.menu-btn.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-folder-switcher {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin: 0;
  padding: 8px 0;
  border: none;
  border-radius: 0;
  background: none;
  color: var(--text);
  box-shadow: none;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  transition: opacity var(--transition);
}

.theme-folder-switcher:hover {
  background: none;
  border: none;
  box-shadow: none;
  opacity: 0.9;
}

.theme-folder-switcher:focus-visible {
  outline: none;
  opacity: 0.9;
}

.theme-folder-switcher.is-shaking {
  animation: folder-shake 0.22s linear;
}

@keyframes folder-shake {
  0%, 100% { transform: rotate(0deg); }
  25% { transform: rotate(-3deg); }
  50% { transform: rotate(2.6deg); }
  75% { transform: rotate(-2.1deg); }
}

.theme-folder-icon {
  position: relative;
  width: 48px;
  height: 36px;
  flex-shrink: 0;
}

.theme-folder-tab {
  position: absolute;
  top: 1px;
  left: 2px;
  width: 24px;
  height: 9px;
  border: var(--border-w) solid var(--border);
  border-bottom: none;
  background: color-mix(in srgb, var(--bg-yellow) 55%, var(--white) 45%);
}

.theme-folder-body {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 27px;
  border: var(--border-w) solid var(--border);
  background: color-mix(in srgb, var(--bg-yellow) 68%, var(--white) 32%);
}

.theme-file {
  --tx: 0px;
  --ty: 0px;
  --rot: -6deg;
  position: absolute;
  left: 12px;
  width: 21px;
  height: 26px;
  border: var(--border-w) solid var(--border);
  background: var(--file-color, #ffffff);
  transform: translate(var(--tx), var(--ty)) rotate(var(--rot));
  transform-origin: bottom center;
  transition: transform 0.18s ease, filter 0.2s ease, opacity 0.2s ease;
}

.theme-file::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 5px;
  right: 4px;
  height: 2px;
  background: color-mix(in srgb, var(--border) 60%, transparent 40%);
  box-shadow: 0 5px 0 color-mix(in srgb, var(--border) 60%, transparent 40%);
}

.theme-file[data-stack="0"] {
  --tx: 10px;
  --ty: -17px;
  --rot: -12deg;
  z-index: 4;
}

.theme-file[data-stack="1"] {
  --tx: 16px;
  --ty: -14px;
  --rot: -4deg;
  z-index: 3;
}

.theme-file[data-stack="2"] {
  --tx: 22px;
  --ty: -11px;
  --rot: 7deg;
  z-index: 2;
}

.theme-file.is-active {
  filter: brightness(1.08);
}

.theme-file.is-dropping {
  animation: folder-file-drop 0.28s ease-in forwards;
}

@keyframes folder-file-drop {
  0% {
    transform: translate(var(--tx), var(--ty)) rotate(var(--rot));
    opacity: 1;
  }
  100% {
    transform: translate(calc(var(--tx) + 34px), calc(var(--ty) + 54px)) rotate(19deg);
    opacity: 0;
  }
}

.mobile-nav {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  z-index: 99;
  display: flex;
  flex-direction: column;
  max-height: 0;
  overflow: hidden;
  padding: 0 32px;
  background: var(--bg);
  border-bottom: var(--border-w) solid var(--border);
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.mobile-nav.open {
  max-height: 300px;
  padding: 16px 32px 24px;
}

.mobile-nav-link {
  padding: 14px 0;
  border-bottom: var(--border-w) solid var(--border);
  color: var(--text);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color var(--transition);
}

.mobile-nav-link:last-child {
  border-bottom: none;
}

.mobile-nav-link:hover {
  color: var(--text-muted);
}

/* ============================================================
   7) Shared Blocks
   ============================================================ */
.featured {
  padding: 100px 0;
  background: var(--bg);
  border-bottom: var(--border-w) solid var(--border);
}

.load-more-wrap {
  text-align: center;
}

/* ============================================================
   3) About
   ============================================================ */
.about {
  padding: 80px 0;
  background: var(--bg);
  border-bottom: var(--border-w) solid var(--border);
}

.about-inner {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 80px;
  align-items: center;
}

.avatar-ring {
  width: 160px;
  height: 160px;
  padding: 6px;
  border: var(--border-w) solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-pink);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.avatar-ring:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-lg);
}

.avatar-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: var(--border-w) solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--text);
  font-size: 3rem;
  text-transform: uppercase;
}

.about-content .section-tag {
  display: block;
  margin-bottom: 16px;
}

.about-title {
  margin-bottom: 20px;
  color: var(--text);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-transform: uppercase;
}

.about-bio {
  max-width: 520px;
  margin-bottom: 32px;
  padding-left: 16px;
  border-left: var(--border-w) solid var(--border);
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.9;
}

.about-links {
  justify-content: center;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.about-link {
  padding: 10px 18px;
  border: var(--border-w) solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow-sm);
  color: var(--text);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  line-height: 1;
  text-transform: uppercase;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.about-link:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow);
  background: var(--bg-blue);
}

.about-link:active {
  transform: translate(1px, 1px);
  box-shadow: none;
}


.newsletter {
  padding: 60px 0;
  background: var(--text);
  border-bottom: var(--border-w) solid var(--border);
}

.newsletter-inner {
  text-align: center;
}

.newsletter-title {
  margin-bottom: 12px;
  color: var(--bg);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-transform: uppercase;
}

.newsletter-desc {
  margin-bottom: 36px;
  color: rgba(244, 239, 234, 0.55);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  line-height: 1.7;
}

.newsletter-email:hover {
  color: var(--bg);
  border-bottom-color: var(--bg);
}

.newsletter-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.newsletter .btn-primary {
  border-color: var(--bg-blue);
  color: var(--text);
  box-shadow: 4px 4px 0 rgba(244, 239, 234, 0.3);
}

.newsletter .btn-primary:hover {
  box-shadow: 6px 6px 0 rgba(244, 239, 234, 0.3);
  border-color: var(--bg);
}

.site-footer {
  padding: 28px 0;
  background: var(--bg-alt);
  border-top: var(--border-w) solid var(--border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-logo {
  color: var(--text);
  font-size: 0.95rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  line-height: 1;
}

.footer-beian-info {
  text-align: center;
}

.footer-beian {
  width: 16px;
  height: 16px;
  object-fit: contain;
  vertical-align: middle;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  padding-bottom: 1px;
  border-bottom: 1px solid transparent;
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  line-height: 1;
  text-transform: uppercase;
  transition: color var(--transition), border-color var(--transition);
}

.footer-links a:hover {
  border-bottom-color: var(--border);
  color: var(--text);
}

html[data-theme] .site-header,
html[data-theme] .nav-link,
html[data-theme] .btn,
html[data-theme] .about-link,
html[data-theme] .mobile-nav,
html[data-theme] .featured,
html[data-theme] .about,
html[data-theme] .newsletter,
html[data-theme] .site-footer {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

html[data-theme="theme-handdrawn"] .btn,
html[data-theme="theme-handdrawn"] .about-link,
html[data-theme="theme-handdrawn"] .section-tag {
  border-radius: 255px 15px 225px 15px / 15px 225px 15px 255px;
}

html[data-theme="theme-handdrawn"] .section-title {
  letter-spacing: 0.01em;
}

html[data-theme="theme-handdrawn"] .nav-link {
  border-radius: 23px 13px 21px 15px / 17px 25px 13px 23px;
}

html[data-theme="theme-handdrawn"] .site-footer .footer-links a {
  text-decoration: underline;
  text-decoration-style: wavy;
  text-decoration-thickness: 1px;
}

html[data-theme="theme-neobrutal"] .section-title,
html[data-theme="theme-neobrutal"] .logo {
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.03em;
}

html[data-theme="theme-neobrutal"] .btn {
  font-weight: 700;
  border-radius: 0;
  text-transform: uppercase;
}

html[data-theme="theme-neobrutal"] .btn:active {
  transform: translate(2px, 2px);
}

html[data-theme="theme-neobrutal"] .nav-link {
  border-radius: 0;
  font-weight: 700;
}

html[data-theme="theme-neobrutal"] .section-tag {
  border-radius: 0;
  border: var(--border-w) solid var(--border);
  padding: 4px 8px;
  background: var(--bg-yellow);
}

/* ============================================================
   8) Shared Responsive
   ============================================================ */
@media (max-width: 640px) {
  :root {
    --header-h: 60px;
  }

  .container {
    padding: 0 20px;
  }

  .nav {
    display: none;
  }

  .header-actions {
    gap: 8px;
  }

  .theme-folder-switcher {
    margin: 0;
    padding: 6px 0;
  }

  .menu-btn {
    display: flex;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .about-avatar {
    display: flex;
    justify-content: center;
  }

  .about-content .section-tag {
    text-align: center;
  }

  .about-bio {
    margin: 0 auto 32px;
  }

  /*.newsletter-actions {*/
  /*  flex-direction: column;*/
  /*  align-items: stretch;*/
  /*}*/

  /*.newsletter-actions .btn {*/
  /*  width: 100%;*/
  /*}*/

  .footer-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 12px;
  }
}