/* ==========================================================================
 萌泮 · 上海大学小小萌论坛 — design system
 Concept: 泮池手账 — a campus notebook kept by 小小萌.
 Paper + 校徽蓝 ink + 朱砂 seal red, board identities from the six blades
 of the aperture on 小小萌's card.
 ========================================================================== */


/* ---------- tokens ---------- */
:root {
  color-scheme: light;
  /* surfaces */
  --paper: #F7F4EC;
  --paper-2: #FFFDF8;
  --paper-3: #EFEADD;
  --paper-glass: rgba(247, 244, 236, .82);
  /* ink */
  --ink: #1C2233;
  --ink-2: #474D5F;
  --ink-3: #696E7B;
  --ink-4: #9A9DA6;
  /* lines */
  --line: #E5DECF;
  --line-2: #D5CCB7;
  --ruling: rgba(4, 56, 124, .07);
  /* brand */
  --shu: #04387C;
  --shu-hover: #0A4C9F;
  --shu-ink: #FFFFFF;
  --shu-soft: #E4EBF5;
  --shu-tint: #F0F4FA;
  --zhu: #C8372D;
  --zhu-soft: #F9E4E0;
  --gold: #B98A1E;
  --ok: #2F7D32;
  --ok-soft: #E3F1E1;
  --warn: #A86A00;
  --warn-soft: #FBEFD5;
  /* blades: base / soft bg / deep text */
  --blade-red: #D9483B;    --blade-red-soft: #FBE5E1;    --blade-red-deep: #A12E23;
  --blade-orange: #EE8A22; --blade-orange-soft: #FDEBD6; --blade-orange-deep: #9C5208;
  --blade-yellow: #E3B21A; --blade-yellow-soft: #FBF1CF; --blade-yellow-deep: #7E6000;
  --blade-green: #5FA82C;  --blade-green-soft: #E6F2DA;  --blade-green-deep: #3B6E17;
  --blade-blue: #1C7FC2;   --blade-blue-soft: #DDEDF8;   --blade-blue-deep: #0F5A8E;
  --blade-purple: #8A66CC; --blade-purple-soft: #ECE5F8; --blade-purple-deep: #5C3E97;
  --blade-cyan: #12A08C;   --blade-cyan-soft: #D9F1EC;   --blade-cyan-deep: #0B6D5F;
  --blade-cyan2: #2A9FD0;  --blade-cyan2-soft: #DCF0F9;  --blade-cyan2-deep: #146E95;
  --blade-ink: #4C5270;    --blade-ink-soft: #E6E7EE;    --blade-ink-deep: #343953;
  /* type */
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-kai: "LXGW WenKai Screen", "LXGW WenKai", "STKaiti", "KaiTi", "Kaiti SC", var(--font-sans);
  --font-mono: ui-monospace, "JetBrains Mono", "SF Mono", "Cascadia Code", Consolas, monospace;
  --fs-12: .75rem; --fs-13: .8125rem; --fs-14: .875rem; --fs-15: .9375rem; --fs-16: 1rem;
  --fs-18: 1.125rem; --fs-20: 1.25rem; --fs-24: 1.5rem; --fs-30: 1.875rem; --fs-38: 2.375rem; --fs-48: 3rem;
  /* space (4px grid) */
  --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 20px; --s6: 24px; --s8: 32px; --s10: 40px; --s14: 56px; --s18: 72px;
  /* radii */
  --r-xs: 6px; --r-sm: 10px; --r-md: 14px; --r-lg: 20px; --r-xl: 28px; --r-pill: 999px;
  /* elevation: paper sits on paper */
  --shadow-1: 0 1px 0 rgba(28, 34, 51, .04), 0 1px 2px rgba(28, 34, 51, .05);
  --shadow-2: 0 1px 0 rgba(28, 34, 51, .04), 0 10px 28px -14px rgba(28, 34, 51, .22);
  --shadow-3: 0 2px 0 rgba(28, 34, 51, .03), 0 24px 60px -20px rgba(16, 24, 48, .35);
  --shadow-sticker: drop-shadow(0 6px 10px rgba(28, 34, 51, .16)) drop-shadow(0 1px 1px rgba(28, 34, 51, .12));
  /* motion */
  --ease-out: cubic-bezier(.2, .8, .2, 1);
  --ease-spring: cubic-bezier(.34, 1.56, .64, 1);
  --t-fast: 140ms; --t-med: 240ms; --t-slow: 420ms;
  /* layout */
  --header-h: 60px;
  --content-w: 1220px;
  --focus: 0 0 0 3px rgba(28, 127, 194, .35);
  /* chart (dataviz reference palette, light) */
  --viz-surface: var(--paper-2);
  --viz-series-1: #2a78d6;
  --viz-grid: #E9E4D8;
  --viz-axis: #C9C1AE;
  --grain-opacity: .5;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #0F1422;
  --paper-2: #161C2D;
  --paper-3: #1E2638;
  --paper-glass: rgba(15, 20, 34, .8);
  --ink: #ECE7DC;
  --ink-2: #C3C3C6;
  --ink-3: #9599A5;
  --ink-4: #6B7080;
  --line: #262F45;
  --line-2: #34405C;
  --ruling: rgba(141, 184, 255, .06);
  --shu: #8DB8FF;
  --shu-hover: #A9C9FF;
  --shu-ink: #0B1222;
  --shu-soft: #1B2A47;
  --shu-tint: #172238;
  --zhu: #FF7B6B;
  --zhu-soft: #3A1E22;
  --gold: #E6BE5A;
  --ok: #7BC67E;
  --ok-soft: #1C3022;
  --warn: #F0B65A;
  --warn-soft: #3A2C14;
  --blade-red: #F07264;    --blade-red-soft: #3A1F22;    --blade-red-deep: #FFA196;
  --blade-orange: #F5A04A; --blade-orange-soft: #3A2A18;  --blade-orange-deep: #FFC285;
  --blade-yellow: #EBC54A; --blade-yellow-soft: #36301A;  --blade-yellow-deep: #F7DC85;
  --blade-green: #86C45A;  --blade-green-soft: #1F3020;   --blade-green-deep: #B4E28F;
  --blade-blue: #4FA6E6;   --blade-blue-soft: #16293D;    --blade-blue-deep: #93CBF5;
  --blade-purple: #A88BE6; --blade-purple-soft: #2A2340;  --blade-purple-deep: #CDB9F7;
  --blade-cyan: #3EC4AE;   --blade-cyan-soft: #15302D;    --blade-cyan-deep: #85E3D2;
  --blade-cyan2: #56BDE6;  --blade-cyan2-soft: #15293A;   --blade-cyan2-deep: #9AD9F3;
  --blade-ink: #8F95B5;    --blade-ink-soft: #232838;     --blade-ink-deep: #C2C6DD;
  --shadow-1: 0 1px 0 rgba(0, 0, 0, .25);
  --shadow-2: 0 1px 0 rgba(0, 0, 0, .3), 0 14px 32px -16px rgba(0, 0, 0, .6);
  --shadow-3: 0 2px 0 rgba(0, 0, 0, .3), 0 28px 70px -24px rgba(0, 0, 0, .75);
  --shadow-sticker: drop-shadow(0 8px 14px rgba(0, 0, 0, .45)) drop-shadow(0 1px 1px rgba(0, 0, 0, .4));
  --focus: 0 0 0 3px rgba(141, 184, 255, .4);
  --viz-series-1: #3987e5;
  --viz-grid: #232B40;
  --viz-axis: #3A4560;
  --grain-opacity: .35;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
  font: 400 var(--fs-15)/1.65 var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
/* paper grain */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .4 0 0 0 0 .35 0 0 0 0 .25 0 0 0 .09 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
#app { position: relative; z-index: 1; }
img, svg, video { max-width: 100%; }
img { height: auto; }
a { color: var(--shu); text-decoration: none; }
a:hover { color: var(--shu-hover); }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: none; box-shadow: var(--focus); border-radius: var(--r-xs); }
::selection { background: rgba(227, 178, 26, .35); }
h1, h2, h3, h4 { margin: 0; line-height: 1.3; font-weight: 700; }
p { margin: 0; }
hr { border: 0; border-top: 1px dashed var(--line-2); margin: var(--s6) 0; }
kbd {
  font: 600 11px/1 var(--font-mono);
  padding: 3px 5px;
  border-radius: 5px;
  border: 1px solid var(--line-2);
  border-bottom-width: 2px;
  background: var(--paper-2);
  color: var(--ink-2);
}
.noscript { padding: 40px; text-align: center; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; transition-duration: 1ms !important; scroll-behavior: auto !important; }
}

/* ---------- layout ---------- */
.shell { min-height: 100vh; display: flex; flex-direction: column; }

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: var(--paper-glass);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid var(--line);
}
.header__inner {
  max-width: var(--content-w);
  margin: 0 auto;
  height: 100%;
  padding: 0 var(--s5);
  display: flex;
  align-items: center;
  gap: var(--s4);
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); flex-shrink: 0; }
.brand:hover { color: var(--ink); }
.brand__mark { width: 34px; height: 34px; transition: transform var(--t-slow) var(--ease-out); }
.brand:hover .brand__mark { transform: rotate(60deg); }
.brand__name { font: 700 22px/1 var(--font-kai); letter-spacing: .04em; }
.brand__sub { display: block; font: 600 10px/1 var(--font-sans); letter-spacing: .16em; color: var(--ink-3); margin-top: 4px; text-transform: uppercase; }

.nav { display: flex; align-items: center; gap: 2px; margin-left: var(--s4); }
.nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: var(--r-pill);
  color: var(--ink-2);
  font-weight: 600;
  font-size: var(--fs-14);
  transition: color var(--t-fast), background var(--t-fast);
}
.nav__link:hover { color: var(--ink); background: var(--paper-3); }
.nav__link[aria-current="page"] { color: var(--shu); }
.nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: 2px;
  height: 6px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 60 6' preserveAspectRatio='none'%3E%3Cpath d='M1 4C10 1 18 5 30 3s20-2 29 0' fill='none' stroke='%23D9483B' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E") center/100% 100% no-repeat;
}

.header__search {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  height: 38px;
  min-width: 220px;
  padding: 0 8px 0 12px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: var(--paper-2);
  color: var(--ink-3);
  font-size: var(--fs-14);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.header__search:hover { border-color: var(--line-2); box-shadow: var(--shadow-1); }
.header__search span { flex: 1; text-align: left; }
.header__actions { display: flex; align-items: center; gap: 6px; }

.page-wrap {
  flex: 1;
  width: 100%;
  max-width: var(--content-w);
  margin: 0 auto;
  padding: var(--s6) var(--s5) var(--s14);
}
.cols { display: grid; grid-template-columns: 200px minmax(0, 1fr) 300px; gap: var(--s8); align-items: start; }
.cols--2 { grid-template-columns: minmax(0, 1fr) 300px; }
.cols--narrow { max-width: 820px; margin: 0 auto; display: block; }
.sidebar { position: sticky; top: calc(var(--header-h) + var(--s6)); display: grid; gap: var(--s4); }
.rail { display: grid; gap: var(--s5); position: sticky; top: calc(var(--header-h) + var(--s6)); }
.main { min-width: 0; display: grid; gap: var(--s5); align-content: start; }

.footer {
  border-top: 1px dashed var(--line-2);
  color: var(--ink-3);
  font-size: var(--fs-13);
}
.footer__inner {
  max-width: var(--content-w);
  margin: 0 auto;
  padding: var(--s8) var(--s5) var(--s10);
  display: flex;
  gap: var(--s6);
  align-items: center;
  flex-wrap: wrap;
}
.footer__logo { width: 40px; opacity: .9; }
:root[data-theme="dark"] .footer__logo { opacity: .75; }
.footer__links { display: flex; gap: var(--s4); margin-left: auto; flex-wrap: wrap; }
.footer__links a { color: var(--ink-3); }
.footer__links a:hover { color: var(--ink); }

.bottom-nav { display: none; }

@media (max-width: 1180px) {
  .cols { grid-template-columns: minmax(0, 1fr) 280px; }
  .cols > .sidebar { display: none; }
  .header__search { min-width: 0; }
  .header__search span { display: none; }
  .header__search kbd { display: none; }
}
@media (max-width: 900px) {
  .cols, .cols--2 { grid-template-columns: minmax(0, 1fr); }
  .rail { position: static; }
  .nav { display: none; }
}
@media (max-width: 760px) {
  :root { --header-h: 54px; }
  body { font-size: var(--fs-15); }
  .header__inner { padding: 0 var(--s4); gap: var(--s2); }
  .brand__sub { display: none; }
  .brand__name { font-size: 20px; }
  .brand__mark { width: 30px; height: 30px; }
  .header__search { margin-left: auto; width: 38px; padding: 0; justify-content: center; border-color: transparent; background: transparent; }
  .header__new { display: none !important; }
  .page-wrap { padding: var(--s4) var(--s3) calc(var(--s18) + env(safe-area-inset-bottom)); }
  .footer { display: none; }
  .bottom-nav {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    position: fixed;
    left: 0; right: 0; bottom: 0;
    z-index: 60;
    padding: 6px 6px calc(6px + env(safe-area-inset-bottom));
    background: var(--paper-glass);
    -webkit-backdrop-filter: saturate(1.4) blur(14px);
    backdrop-filter: saturate(1.4) blur(14px);
    border-top: 1px solid var(--line);
  }
  .bottom-nav a {
    position: relative;
    display: grid;
    justify-items: center;
    gap: 2px;
    padding: 4px 0;
    font-size: 11px;
    font-weight: 600;
    color: var(--ink-3);
  }
  .bottom-nav a[aria-current="page"] { color: var(--shu); }
  .bottom-nav .bottom-nav__new {
    width: 46px; height: 46px;
    margin: -14px auto 0;
    border-radius: 16px;
    display: grid; place-items: center;
    background: var(--shu);
    color: var(--shu-ink);
    box-shadow: 0 8px 18px -8px rgba(4, 56, 124, .7);
    transform: rotate(-4deg);
  }
  .bottom-nav .badge-dot { position: absolute; top: 2px; left: calc(50% + 6px); }
}

/* ---------- components ---------- */
/* icon */
.icon { width: 1.15em; height: 1.15em; flex-shrink: 0; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; vertical-align: -.2em; }
.icon--fill { fill: currentColor; stroke: none; }

/* buttons */
.btn {
  --btn-bg: var(--paper-2);
  --btn-fg: var(--ink);
  --btn-bd: var(--line-2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 38px;
  padding: 0 16px;
  border-radius: var(--r-pill);
  border: 1px solid var(--btn-bd);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-weight: 600;
  font-size: var(--fs-14);
  line-height: 1;
  white-space: nowrap;
  user-select: none;
  transition: transform var(--t-fast) var(--ease-out), background var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast), color var(--t-fast);
}
.btn:hover { border-color: var(--ink-4); color: var(--btn-fg); }
.btn:active { transform: translateY(1px) scale(.98); }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .5; pointer-events: none; }
.btn--primary { --btn-bg: var(--shu); --btn-fg: var(--shu-ink); --btn-bd: var(--shu); box-shadow: 0 6px 16px -10px rgba(4, 56, 124, .9); }
.btn--primary:hover { --btn-bg: var(--shu-hover); --btn-bd: var(--shu-hover); }
.btn--zhu { --btn-bg: var(--zhu); --btn-fg: #fff; --btn-bd: var(--zhu); }
.btn--ghost { --btn-bg: transparent; --btn-bd: transparent; --btn-fg: var(--ink-2); }
.btn--ghost:hover { --btn-bg: var(--paper-3); --btn-bd: transparent; }
.btn--soft { --btn-bg: var(--shu-soft); --btn-bd: transparent; --btn-fg: var(--shu); }
.btn--soft:hover { --btn-bd: transparent; filter: brightness(.98); }
.btn--danger { --btn-fg: var(--zhu); }
.btn--sm { height: 30px; padding: 0 12px; font-size: var(--fs-13); }
.btn--lg { height: 46px; padding: 0 22px; font-size: var(--fs-15); }
.btn--icon { width: 38px; padding: 0; }
.btn--icon.btn--sm { width: 30px; }
.btn--block { width: 100%; }
.btn .spinner { width: 14px; height: 14px; }

.icon-btn {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 0;
  background: transparent;
  color: var(--ink-2);
  transition: background var(--t-fast), color var(--t-fast);
}
.icon-btn:hover { background: var(--paper-3); color: var(--ink); }
.icon-btn .icon { width: 20px; height: 20px; }

.badge-dot {
  position: absolute;
  top: 6px; right: 6px;
  min-width: 16px; height: 16px;
  padding: 0 4px;
  border-radius: 8px;
  background: var(--zhu);
  color: #fff;
  font: 700 10px/16px var(--font-sans);
  text-align: center;
  box-shadow: 0 0 0 2px var(--paper);
}

.spinner {
  display: inline-block;
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 2px solid currentColor;
  border-right-color: transparent;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* card */
.card {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-1);
}
.card__head { display: flex; align-items: center; gap: var(--s2); padding: var(--s4) var(--s5) 0; }
.card__title { font: 700 var(--fs-16)/1.3 var(--font-kai); letter-spacing: .02em; display: flex; align-items: center; gap: 8px; }
.card__more { margin-left: auto; font-size: var(--fs-13); color: var(--ink-3); }
.card__body { padding: var(--s4) var(--s5) var(--s5); }

/* section heading with hand-drawn mark */
.eyebrow { font: 700 11px/1 var(--font-sans); letter-spacing: .18em; text-transform: uppercase; color: var(--ink-3); }
.h-kai { font-family: var(--font-kai); font-weight: 700; letter-spacing: .02em; }
.section-title { font: 700 var(--fs-20)/1.3 var(--font-kai); display: flex; align-items: center; gap: 10px; }
.section-title::before { content: ""; width: 6px; height: 1.1em; border-radius: 3px; background: var(--zhu); transform: rotate(8deg); }

/* chips */
.chip {
  --c: var(--ink-3); --c-soft: var(--paper-3); --c-deep: var(--ink-2);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 24px;
  padding: 0 9px;
  border-radius: var(--r-pill);
  background: var(--c-soft);
  color: var(--c-deep);
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  border: 0;
}
a.chip:hover, button.chip:hover { color: var(--c-deep); filter: brightness(.97); }
.chip__dot { width: 7px; height: 7px; border-radius: 2px; background: var(--c); transform: rotate(45deg); }
.chip--lg { height: 32px; padding: 0 14px; font-size: var(--fs-13); }
.chip--outline { background: transparent; box-shadow: inset 0 0 0 1px var(--line-2); color: var(--ink-2); }
.chip[aria-pressed="true"] { background: var(--c); color: #fff; }
:root[data-theme="dark"] .chip[aria-pressed="true"] { color: var(--paper); }

.blade-red    { --c: var(--blade-red);    --c-soft: var(--blade-red-soft);    --c-deep: var(--blade-red-deep); }
.blade-orange { --c: var(--blade-orange); --c-soft: var(--blade-orange-soft); --c-deep: var(--blade-orange-deep); }
.blade-yellow { --c: var(--blade-yellow); --c-soft: var(--blade-yellow-soft); --c-deep: var(--blade-yellow-deep); }
.blade-green  { --c: var(--blade-green);  --c-soft: var(--blade-green-soft);  --c-deep: var(--blade-green-deep); }
.blade-blue   { --c: var(--blade-blue);   --c-soft: var(--blade-blue-soft);   --c-deep: var(--blade-blue-deep); }
.blade-purple { --c: var(--blade-purple); --c-soft: var(--blade-purple-soft); --c-deep: var(--blade-purple-deep); }
.blade-cyan   { --c: var(--blade-cyan);   --c-soft: var(--blade-cyan-soft);   --c-deep: var(--blade-cyan-deep); }
.blade-cyan2  { --c: var(--blade-cyan2);  --c-soft: var(--blade-cyan2-soft);  --c-deep: var(--blade-cyan2-deep); }
.ink          { --c: var(--blade-ink);    --c-soft: var(--blade-ink-soft);    --c-deep: var(--blade-ink-deep); }

/* seal stamp (精华 / 已解决 / 楼主采纳) */
.stamp {
  --stamp: var(--zhu);
  display: inline-grid;
  place-items: center;
  padding: 2px 7px;
  border: 1.5px solid var(--stamp);
  border-radius: 5px;
  color: var(--stamp);
  font: 700 12px/1.2 var(--font-kai);
  letter-spacing: .1em;
  transform: rotate(-6deg);
  box-shadow: inset 0 0 0 1.5px var(--paper-2), inset 0 0 0 2.5px var(--stamp);
  opacity: .92;
  white-space: nowrap;
}
.stamp--ok { --stamp: var(--ok); }
.stamp--blue { --stamp: var(--shu); }
.stamp--gold { --stamp: var(--gold); }
.stamp--lg { font-size: 18px; padding: 6px 12px; border-width: 2px; }

.tag-pill { font-size: 12px; color: var(--ink-3); }
.tag-pill::before { content: "#"; color: var(--ink-4); margin-right: 1px; }
a.tag-pill:hover { color: var(--shu); }

/* avatar */
.avatar {
  --size: 36px;
  position: relative;
  display: inline-grid;
  place-items: center;
  flex-shrink: 0;
  width: var(--size);
  height: var(--size);
  border-radius: 50%;
  overflow: hidden;
  background: var(--c-soft, var(--paper-3));
  color: var(--c-deep, var(--ink-2));
  font: 700 calc(var(--size) * .46)/1 var(--font-kai);
  box-shadow: inset 0 0 0 1.5px color-mix(in srgb, var(--c, var(--line-2)) 40%, transparent);
  user-select: none;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar--xs { --size: 20px; }
.avatar--sm { --size: 28px; }
.avatar--lg { --size: 56px; }
.avatar--xl { --size: 96px; }
.avatar--bot { box-shadow: 0 0 0 2px var(--paper-2), 0 0 0 3.5px var(--zhu); background: #fff; }
.avatar--anon { background: var(--blade-ink-soft); color: var(--blade-ink-deep); }
.avatar--anon .icon { width: 58%; height: 58%; }

.user-line { display: inline-flex; align-items: center; gap: 8px; min-width: 0; }
.user-line__name { font-weight: 600; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
a.user-line:hover .user-line__name { color: var(--shu); }
.user-badge { display: inline-flex; align-items: center; height: 18px; padding: 0 6px; border-radius: 5px; font-size: 11px; font-weight: 700; line-height: 1; background: var(--paper-3); color: var(--ink-3); }
.user-badge--op { background: var(--shu-soft); color: var(--shu); }
.user-badge--bot { background: var(--zhu-soft); color: var(--zhu); }
.user-badge--admin { background: var(--blade-yellow-soft); color: var(--blade-yellow-deep); }
.user-badge--shu { background: var(--shu-soft); color: var(--shu); gap: 2px; }
.user-badge--shu .icon { stroke-width: 2.6; }

/* forms */
.field { display: grid; gap: 6px; }
.field__label { font-size: var(--fs-13); font-weight: 600; color: var(--ink-2); display: flex; align-items: baseline; gap: 8px; }
.field__hint { font-size: 12px; color: var(--ink-3); font-weight: 400; }
.field__error { font-size: 12px; color: var(--zhu); }
.input, .textarea, .select {
  width: 100%;
  min-height: 42px;
  padding: 9px 13px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-2);
  background: var(--paper-2);
  color: var(--ink);
  transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}
.input::placeholder, .textarea::placeholder { color: var(--ink-4); }
.input:hover, .textarea:hover, .select:hover { border-color: var(--ink-4); }
.input:focus, .textarea:focus, .select:focus { outline: none; border-color: var(--blade-blue); box-shadow: var(--focus); }
.textarea { resize: vertical; line-height: 1.7; }
.input--title { font: 700 var(--fs-20)/1.4 var(--font-kai); min-height: 52px; padding: 10px 14px; }
.select { appearance: none; padding-right: 34px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; background-size: 16px; }
.row { display: flex; gap: var(--s3); align-items: center; }
.row--wrap { flex-wrap: wrap; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s4); }
@media (max-width: 560px) { .grid-2 { grid-template-columns: 1fr; } }

.segmented { display: inline-flex; padding: 3px; border-radius: var(--r-pill); background: var(--paper-3); gap: 2px; }
.segmented button {
  border: 0; background: transparent; color: var(--ink-3);
  height: 30px; padding: 0 14px; border-radius: var(--r-pill);
  font-weight: 600; font-size: var(--fs-13);
  transition: background var(--t-fast), color var(--t-fast), box-shadow var(--t-fast);
}
.segmented button[aria-pressed="true"] { background: var(--paper-2); color: var(--ink); box-shadow: var(--shadow-1); }

/* tabs with ink underline */
.tabs { display: flex; gap: var(--s1); border-bottom: 1px solid var(--line); overflow-x: auto; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab {
  position: relative;
  border: 0; background: none;
  padding: 10px 12px 12px;
  color: var(--ink-3);
  font-weight: 600;
  font-size: var(--fs-14);
  white-space: nowrap;
  display: inline-flex; gap: 6px; align-items: center;
}
.tab:hover { color: var(--ink); }
.tab[aria-selected="true"] { color: var(--ink); }
.tab[aria-selected="true"]::after {
  content: ""; position: absolute; left: 10px; right: 10px; bottom: -1px; height: 3px; border-radius: 3px 3px 0 0; background: var(--shu);
}
.tab__count { font-size: 11px; color: var(--ink-4); font-weight: 600; }

/* post list */
.post-list { display: grid; }
.post-item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px var(--s4);
  padding: var(--s4) var(--s5) var(--s4) calc(var(--s5) + 4px);
  border-bottom: 1px solid var(--line);
  color: inherit;
  transition: background var(--t-fast);
}
.post-item:last-child { border-bottom: 0; }
.post-item > :not(.post-item__side) { grid-column: 1; }
.post-item::before {
  content: "";
  position: absolute;
  left: 0; top: var(--s4); bottom: var(--s4);
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--c, var(--line-2));
  opacity: .8;
  transition: width var(--t-fast) var(--ease-out);
}
.post-item:hover { background: var(--shu-tint); color: inherit; }
.post-item:hover::before { width: 5px; }
.post-item__top { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; min-width: 0; }
.post-item__title {
  font-size: var(--fs-16);
  font-weight: 650;
  line-height: 1.45;
  color: var(--ink);
  overflow-wrap: anywhere;
}
.post-item:visited .post-item__title { color: var(--ink-2); }
.post-item__excerpt { font-size: var(--fs-14); color: var(--ink-3); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; overflow-wrap: anywhere; }
.post-item__meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 12.5px; color: var(--ink-3); margin-top: 2px; }
.post-item__meta .sep { width: 3px; height: 3px; border-radius: 50%; background: var(--ink-4); }
.post-item__side { grid-row: 1 / span 3; grid-column: 2; display: grid; justify-items: end; align-content: start; gap: 8px; }
.post-item__cover { width: 76px; height: 76px; border-radius: var(--r-sm); object-fit: cover; border: 1px solid var(--line); background: var(--paper-3); }
.count-bubble {
  display: inline-flex; align-items: center; gap: 4px;
  min-width: 40px; height: 26px; padding: 0 9px; justify-content: center;
  border-radius: 13px 13px 13px 4px;
  background: var(--paper-3);
  color: var(--ink-2);
  font: 700 12px/1 var(--font-sans);
  font-variant-numeric: tabular-nums;
}
.count-bubble--hot { background: var(--zhu-soft); color: var(--zhu); }
.xxm-mark { display: inline-flex; align-items: center; gap: 4px; color: var(--zhu); font-weight: 600; }
.xxm-mark img { width: 16px; height: 16px; border-radius: 50%; }
.post-flags { display: inline-flex; gap: 6px; align-items: center; }
.flag-pin { color: var(--zhu); display: inline-flex; }
.meta-price { font: 700 var(--fs-14)/1 var(--font-sans); color: var(--blade-orange-deep); }

.status {
  display: inline-flex; align-items: center; gap: 4px;
  height: 22px; padding: 0 8px; border-radius: 6px;
  font-size: 11.5px; font-weight: 700; line-height: 1;
}
.status--open { background: var(--blade-blue-soft); color: var(--blade-blue-deep); }
.status--solved { background: var(--ok-soft); color: var(--ok); }
.status--done { background: var(--paper-3); color: var(--ink-3); }
.status--lost { background: var(--blade-red-soft); color: var(--blade-red-deep); }
.status--found { background: var(--blade-cyan-soft); color: var(--blade-cyan-deep); }

/* empty & skeleton */
.empty { display: grid; justify-items: center; gap: var(--s3); padding: var(--s10) var(--s5); text-align: center; color: var(--ink-3); }
.empty__img { width: 150px; filter: var(--shadow-sticker); transform: rotate(-4deg); }
.empty__title { font: 700 var(--fs-18)/1.4 var(--font-kai); color: var(--ink-2); }
.skeleton { display: grid; gap: 10px; padding: var(--s4) var(--s5); border-bottom: 1px solid var(--line); }
.sk { height: 12px; border-radius: 6px; background: linear-gradient(90deg, var(--paper-3) 0%, var(--line) 50%, var(--paper-3) 100%); background-size: 200% 100%; animation: shimmer 1.4s ease-in-out infinite; }
@keyframes shimmer { 0% { background-position: 100% 0; } 100% { background-position: -100% 0; } }

/* speech bubble — 小小萌 talking */
.bubble {
  position: relative;
  display: inline-block;
  padding: 10px 14px;
  border-radius: 16px 16px 16px 4px;
  background: var(--paper-2);
  border: 1.5px solid var(--ink);
  font: 600 var(--fs-15)/1.5 var(--font-kai);
  color: var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
}
:root[data-theme="dark"] .bubble { border-color: var(--line-2); box-shadow: 3px 3px 0 var(--line-2); }

/* toasts */
.toasts { position: fixed; z-index: 200; left: 50%; bottom: 24px; transform: translateX(-50%); display: grid; gap: 8px; width: min(420px, calc(100vw - 24px)); pointer-events: none; }
@media (max-width: 760px) { .toasts { bottom: calc(80px + env(safe-area-inset-bottom)); } }
.toast {
  pointer-events: auto;
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  border-radius: var(--r-md);
  background: var(--ink);
  color: var(--paper);
  box-shadow: var(--shadow-3);
  font-size: var(--fs-14);
  animation: toast-in var(--t-med) var(--ease-spring);
}
.toast img { width: 26px; height: 26px; border-radius: 50%; background: #fff; }
.toast--error { background: var(--zhu); color: #fff; }
@keyframes toast-in { from { opacity: 0; transform: translateY(12px) scale(.96); } }

/* modal / sheet */
.overlay {
  position: fixed; inset: 0; z-index: 150;
  background: rgba(10, 14, 26, .42);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
  display: grid; place-items: start center;
  padding: 9vh var(--s4) var(--s4);
  overflow-y: auto;
  animation: fade-in var(--t-med) var(--ease-out);
}
@keyframes fade-in { from { opacity: 0; } }
.modal {
  position: relative;
  width: min(440px, 100%);
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-3);
  animation: pop-in var(--t-med) var(--ease-spring);
}
.modal--wide { width: min(640px, 100%); }
@keyframes pop-in { from { opacity: 0; transform: translateY(10px) scale(.97); } }
.modal__close { position: absolute; top: 10px; right: 10px; }
.modal__body { padding: var(--s6); }
@media (max-width: 560px) {
  .overlay { place-items: end center; padding: 0; }
  .modal { width: 100%; border-radius: var(--r-lg) var(--r-lg) 0 0; animation-name: sheet-in; padding-bottom: env(safe-area-inset-bottom); }
  @keyframes sheet-in { from { transform: translateY(40px); opacity: .4; } }
}

/* menu (dropdown) */
.menu-wrap { position: relative; }
.menu {
  position: absolute; right: 0; top: calc(100% + 8px); z-index: 80;
  min-width: 200px;
  padding: 6px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-3);
  animation: pop-in var(--t-fast) var(--ease-out);
  transform-origin: top right;
}
.menu__item {
  display: flex; align-items: center; gap: 10px;
  width: 100%;
  padding: 9px 10px;
  border: 0; border-radius: var(--r-sm);
  background: none;
  color: var(--ink);
  font-size: var(--fs-14);
  text-align: left;
}
.menu__item:hover { background: var(--paper-3); color: var(--ink); }
.menu__item .icon { color: var(--ink-3); }
.menu__sep { height: 1px; background: var(--line); margin: 6px 4px; }
.menu__head { padding: 8px 10px 10px; display: flex; gap: 10px; align-items: center; }

/* reactions */
.reactions { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.react {
  display: inline-flex; align-items: center; gap: 5px;
  height: 32px; padding: 0 12px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-2);
  background: var(--paper-2);
  color: var(--ink-2);
  font-size: var(--fs-13); font-weight: 600;
  transition: border-color var(--t-fast), background var(--t-fast), color var(--t-fast), transform var(--t-fast) var(--ease-out);
}
.react:hover { border-color: var(--ink-4); }
.react__emoji { font-size: 15px; line-height: 1; }
.react__n { font-variant-numeric: tabular-nums; }
.react[aria-pressed="true"] { background: var(--zhu-soft); border-color: transparent; color: var(--zhu); }
.react.is-popping .react__emoji, .react.is-popping .icon { animation: react-pop 420ms var(--ease-spring); }
@keyframes react-pop { 0% { transform: scale(1); } 40% { transform: scale(1.45) rotate(-8deg); } 100% { transform: scale(1); } }
.react--like .icon { width: 16px; height: 16px; }
.react--like[aria-pressed="true"] .icon { fill: currentColor; }
.react-tray {
  position: absolute; bottom: calc(100% + 8px); left: 0; z-index: 30;
  display: flex; gap: 4px; padding: 6px;
  border-radius: var(--r-pill);
  background: var(--paper-2);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-3);
  animation: pop-in var(--t-fast) var(--ease-spring);
}
.react-tray button {
  display: grid; justify-items: center; gap: 1px;
  width: 52px; padding: 6px 0 4px;
  border: 0; border-radius: var(--r-sm); background: none;
  font-size: 11px; font-weight: 600; color: var(--ink-3);
  transition: transform var(--t-fast) var(--ease-spring), background var(--t-fast);
}
.react-tray button span:first-child { font-size: 20px; line-height: 1.1; }
.react-tray button:hover { transform: translateY(-3px) scale(1.08); background: var(--paper-3); }
.react-tray button[aria-pressed="true"] { background: var(--zhu-soft); color: var(--zhu); }

/* prose (rendered markdown) */
.prose { font-size: var(--fs-16); line-height: 1.85; color: var(--ink); overflow-wrap: anywhere; }
.prose > * + * { margin-top: .9em; }
.prose h3, .prose h4 { font-family: var(--font-kai); margin-top: 1.4em; }
.prose h3 { font-size: var(--fs-20); }
.prose h4 { font-size: var(--fs-18); }
.prose ul, .prose ol { padding-left: 1.5em; margin-bottom: 0; }
.prose li + li { margin-top: .3em; }
.prose li::marker { color: var(--ink-3); }
.prose a { color: var(--shu); text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--shu) 35%, transparent); text-underline-offset: 3px; }
.prose a:hover { text-decoration-color: currentColor; }
.prose a.mention, .prose a.post-ref { text-decoration: none; background: var(--shu-soft); padding: 1px 6px; border-radius: 6px; font-weight: 600; font-size: .94em; }
.prose blockquote {
  margin-left: 0; margin-right: 0;
  padding: 8px 16px;
  border-left: 3px solid var(--blade-yellow);
  background: var(--blade-yellow-soft);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--ink-2);
}
.prose code { font: .9em/1.5 var(--font-mono); padding: 2px 6px; border-radius: 5px; background: var(--paper-3); }
.prose pre { padding: 14px 16px; border-radius: var(--r-sm); background: #1B2130; color: #E6E2D8; overflow-x: auto; font-size: 13.5px; line-height: 1.6; }
.prose pre code { background: none; padding: 0; color: inherit; }
.prose img { display: block; max-height: 560px; width: auto; border-radius: var(--r-sm); border: 1px solid var(--line); cursor: zoom-in; background: var(--paper-3); }
.prose table { border-collapse: collapse; display: block; overflow-x: auto; font-size: var(--fs-14); }
.prose th, .prose td { border: 1px solid var(--line-2); padding: 6px 10px; text-align: left; }
.prose th { background: var(--paper-3); }
.prose hr { margin: 1.6em 0; }
.prose .spoiler { background: var(--ink); color: transparent; border-radius: 4px; padding: 0 3px; cursor: pointer; transition: color var(--t-fast), background var(--t-fast); }
.prose .spoiler:hover, .prose .spoiler.is-shown { background: var(--paper-3); color: inherit; }
.prose input[type="checkbox"] { margin-right: 6px; accent-color: var(--shu); }
.prose li:has(> input[type="checkbox"]) { list-style: none; margin-left: -1.3em; }
.prose--sm { font-size: var(--fs-15); line-height: 1.8; }

/* lightbox */
.lightbox { position: fixed; inset: 0; z-index: 220; background: rgba(8, 10, 18, .9); display: grid; place-items: center; padding: 20px; cursor: zoom-out; animation: fade-in var(--t-med); }
.lightbox img { max-width: 100%; max-height: 100%; border-radius: 8px; box-shadow: var(--shadow-3); }

/* load more / pager */
.more { display: flex; justify-content: center; padding: var(--s4); }

/* tooltip (charts) */
.viz-tip {
  position: fixed; z-index: 300; pointer-events: none;
  padding: 8px 10px; border-radius: 10px;
  background: var(--ink); color: var(--paper);
  font-size: 12.5px; line-height: 1.4;
  box-shadow: var(--shadow-3);
  transform: translate(-50%, calc(-100% - 12px));
  white-space: nowrap;
}
.viz-tip strong { font-size: 15px; display: block; }

/* aperture logo */
.aperture path { transition: transform var(--t-slow) var(--ease-out); transform-origin: 32px 32px; }

/* board color stripe & cards */
.board-card {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  align-items: center;
  padding: 14px 16px;
  border-radius: var(--r-md);
  background: var(--paper-2);
  border: 1px solid var(--line);
  color: var(--ink);
  overflow: hidden;
  transition: transform var(--t-med) var(--ease-out), box-shadow var(--t-med), border-color var(--t-fast);
}
.board-card::after {
  content: "";
  position: absolute; right: -18px; bottom: -18px;
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--c-soft);
  transition: transform var(--t-slow) var(--ease-out);
}
.board-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-2); border-color: var(--line-2); color: var(--ink); }
.board-card:hover::after { transform: scale(1.6); }
.board-card__icon { grid-row: span 2; width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; background: var(--c-soft); color: var(--c-deep); position: relative; z-index: 1; }
.board-card__icon .icon { width: 21px; height: 21px; }
.board-card__name { font: 700 var(--fs-16)/1.2 var(--font-kai); position: relative; z-index: 1; display: flex; align-items: baseline; gap: 8px; }
.board-card__count { font: 600 11.5px/1 var(--font-sans); color: var(--ink-3); }
.board-card__today { color: var(--c-deep); }
.board-card__desc { font-size: 12.5px; color: var(--ink-3); line-height: 1.45; position: relative; z-index: 1; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }

.side-boards { display: grid; gap: 2px; }
.side-board {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 10px;
  border-radius: var(--r-sm);
  color: var(--ink-2);
  font-weight: 600;
  font-size: var(--fs-14);
  transition: background var(--t-fast), color var(--t-fast);
}
.side-board:hover { background: var(--paper-3); color: var(--ink); }
.side-board[aria-current="page"] { background: var(--c-soft); color: var(--c-deep); }
.side-board__icon { width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; background: var(--c-soft); color: var(--c-deep); }
.side-board__icon .icon { width: 15px; height: 15px; }
.side-board__n { margin-left: auto; font-size: 11px; color: var(--ink-4); font-variant-numeric: tabular-nums; }
.side-title { font: 700 11px/1 var(--font-sans); letter-spacing: .16em; color: var(--ink-4); padding: 4px 10px 8px; }

/* command palette */
.palette { width: min(620px, 100%); }
.palette__input { display: flex; align-items: center; gap: 10px; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.palette__input input { flex: 1; border: 0; background: none; font-size: var(--fs-18); outline: none; min-width: 0; }
.palette__list { max-height: min(60vh, 460px); overflow-y: auto; padding: 8px; }
.palette__group { font: 700 11px/1 var(--font-sans); letter-spacing: .14em; color: var(--ink-4); padding: 12px 10px 6px; }
.palette__item { display: flex; align-items: center; gap: 12px; padding: 10px; border-radius: var(--r-sm); color: var(--ink); cursor: pointer; }
.palette__item[aria-selected="true"] { background: var(--shu-soft); }
.palette__item small { color: var(--ink-3); display: block; font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.palette__item > div { min-width: 0; flex: 1; }
.palette__foot { display: flex; gap: 14px; padding: 10px 16px; border-top: 1px solid var(--line); font-size: 12px; color: var(--ink-3); }
mark { background: rgba(227, 178, 26, .32); color: inherit; border-radius: 3px; padding: 0 1px; }

/* ---------- pages ---------- */
.page { animation: page-in var(--t-slow) var(--ease-out); }
@keyframes page-in { from { opacity: 0; transform: translateY(6px); } }

/* boot */
.boot { min-height: 70vh; display: grid; place-content: center; justify-items: center; gap: 14px; color: var(--ink-3); font-family: var(--font-kai); }
.boot__xxm { width: 166px; animation: bob 1.6s ease-in-out infinite; filter: var(--shadow-sticker); }
@keyframes bob { 50% { transform: translateY(-6px) rotate(-2deg); } }

/* ----- home hero ----- */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  min-height: 330px;
  border-radius: var(--r-xl);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(42, 159, 208, .14), transparent 60%),
    radial-gradient(90% 80% at 0% 100%, rgba(227, 178, 26, .12), transparent 60%),
    var(--paper-2);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-2);
  overflow: hidden;
  isolation: isolate;
}
/* notebook ruling + margin line */
.hero::before {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(90deg, transparent 52px, rgba(217, 72, 59, .28) 52px, rgba(217, 72, 59, .28) 53.5px, transparent 53.5px),
    repeating-linear-gradient(180deg, transparent 0 31px, var(--ruling) 31px 32px);
}
.hero__text { padding: var(--s8) var(--s8) var(--s8) 80px; display: grid; gap: var(--s4); align-content: center; }
.hero__greet { font: 700 clamp(26px, 3.4vw, 38px)/1.25 var(--font-kai); letter-spacing: .01em; }
.hero__greet em { font-style: normal; color: var(--shu); background: linear-gradient(transparent 62%, rgba(227, 178, 26, .45) 62%, rgba(227, 178, 26, .45) 92%, transparent 92%); padding: 0 2px; }
.hero__lead { color: var(--ink-2); font-size: var(--fs-15); max-width: 34em; }
.hero__art { position: relative; display: grid; place-items: end center; }
.hero__ring {
  position: absolute; top: 26px; left: 50%;
  width: 260px; height: 260px; margin-left: -130px;
  opacity: .9;
  animation: turn 60s linear infinite;
}
@keyframes turn { to { transform: rotate(360deg); } }
.hero__ring path { opacity: .16; }
.hero__sticker {
  position: relative;
  width: 228px;
  margin-bottom: -10px;
  filter: var(--shadow-sticker);
  transform: rotate(3deg);
  transform-origin: 50% 100%;
  cursor: pointer;
  transition: transform var(--t-med) var(--ease-spring);
  -webkit-user-drag: none;
  user-select: none;
}
.hero__sticker:hover { transform: rotate(0deg) translateY(-6px); }
.hero__sticker.is-poked { animation: poke 520ms var(--ease-spring); }
@keyframes poke { 0% { transform: rotate(3deg); } 30% { transform: rotate(-5deg) translateY(-14px) scale(1.03); } 60% { transform: rotate(4deg) translateY(-4px); } 100% { transform: rotate(3deg); } }
.hero__say { position: absolute; top: 34px; right: 50%; margin-right: 50px; max-width: 220px; z-index: 2; animation: pop-in var(--t-med) var(--ease-spring); }
.hero__say .bubble { border-radius: 16px 16px 4px 16px; font-size: var(--fs-14); }
.hero__tape {
  position: absolute; top: -8px; right: 64px; z-index: 3;
  width: 92px; height: 26px;
  background: repeating-linear-gradient(-45deg, rgba(42, 159, 208, .45) 0 6px, rgba(42, 159, 208, .3) 6px 12px);
  transform: rotate(8deg);
  -webkit-mask: linear-gradient(90deg, transparent 0 3px, #000 3px calc(100% - 3px), transparent 0), linear-gradient(#000, #000);
  opacity: .85;
}

@media (max-width: 900px) and (min-width: 761px) {
  .hero { grid-template-columns: minmax(0, 1fr) 220px; }
  .hero__say { display: none; }
}
@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; min-height: 0; border-radius: var(--r-lg); }
  .hero::before { background:
      linear-gradient(90deg, transparent 26px, rgba(217, 72, 59, .28) 26px, rgba(217, 72, 59, .28) 27.5px, transparent 27.5px),
      repeating-linear-gradient(180deg, transparent 0 31px, var(--ruling) 31px 32px); }
  .hero__text { padding: 20px 16px 18px 40px; gap: 12px; }
  .hero .eyebrow, .hero__greet { padding-right: 92px; }
  .hero__greet { font-size: 25px; }
  .hero__lead { font-size: var(--fs-14); padding-right: 88px; }
  .hero__art { position: absolute; top: 10px; right: 4px; width: 96px; height: 150px; z-index: 1; overflow: visible; }
  .hero__ring, .hero__say, .hero__tape { display: none; }
  .hero__sticker { width: 92px; margin: 0; transform: rotate(6deg); }
  .ask__box { padding-left: 12px; }
  .ask__box input { font-size: 15px; }
  .ask__box .btn { padding: 0 12px; }
}

.ask { position: relative; }
.ask__box {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 6px 6px 16px;
  border-radius: var(--r-pill);
  background: var(--paper);
  border: 1.5px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  transition: transform var(--t-fast) var(--ease-out), box-shadow var(--t-fast);
}
:root[data-theme="dark"] .ask__box { border-color: var(--line-2); box-shadow: 4px 4px 0 var(--line-2); }
.ask__box:focus-within { transform: translate(-1px, -1px); box-shadow: 5px 5px 0 var(--shu); border-color: var(--shu); }
.ask__box input { flex: 1; min-width: 0; border: 0; background: none; outline: none; font-size: var(--fs-16); height: 40px; }
.ask__chips { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.ask__chips .chip { cursor: pointer; }
.ask-result { margin-top: var(--s4); display: grid; gap: var(--s3); animation: pop-in var(--t-med) var(--ease-out); }
.ask-result__line { display: flex; gap: 10px; align-items: flex-start; }
.ask-result__line img { width: 34px; height: 34px; border-radius: 50%; background: #fff; box-shadow: 0 0 0 2px var(--paper-2), 0 0 0 3.5px var(--zhu); }

/* faq card (萌知道) */
.faq-card {
  position: relative;
  display: grid; gap: 6px;
  padding: 14px 16px 14px 18px;
  border-radius: var(--r-md);
  background: var(--paper-2);
  border: 1px solid var(--line);
  color: var(--ink);
  transition: border-color var(--t-fast), box-shadow var(--t-fast), transform var(--t-med) var(--ease-out);
}
.faq-card::before { content: ""; position: absolute; left: 0; top: 14px; bottom: 14px; width: 3px; border-radius: 0 3px 3px 0; background: var(--c, var(--blade-blue)); }
a.faq-card:hover { color: var(--ink); border-color: var(--line-2); box-shadow: var(--shadow-2); transform: translateY(-1px); }
.faq-card__title { font: 700 var(--fs-16)/1.4 var(--font-kai); display: flex; gap: 8px; align-items: baseline; }
.faq-card__short { font-size: var(--fs-14); color: var(--ink-2); line-height: 1.6; }
.faq-card__meta { display: flex; gap: 8px; align-items: center; font-size: 12px; color: var(--ink-3); flex-wrap: wrap; }
.score-dots { display: inline-flex; gap: 2px; }
.score-dots i { width: 6px; height: 6px; border-radius: 50%; background: var(--line-2); }
.score-dots i.on { background: var(--ok); }

/* term strip (校历) */
.term {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: var(--s5);
  align-items: center;
  padding: 14px 20px;
}
.term__now { display: grid; gap: 2px; }
.term__week { font: 700 var(--fs-20)/1.1 var(--font-kai); }
.term__week b { color: var(--zhu); font-size: 1.35em; margin: 0 2px; }
.term__sub { font-size: 12.5px; color: var(--ink-3); }
.term__track { display: grid; grid-template-columns: repeat(var(--n), 1fr); gap: 3px; align-items: end; height: 34px; }
.term__tick { height: 14px; border-radius: 3px; background: var(--line); position: relative; }
.term__tick.is-past { background: color-mix(in srgb, var(--shu) 35%, var(--line)); }
.term__tick.is-now { height: 30px; background: var(--zhu); box-shadow: 0 0 0 3px var(--zhu-soft); }
.term__tick.is-exam { background-image: repeating-linear-gradient(-45deg, transparent 0 3px, rgba(217, 72, 59, .35) 3px 5px); }
.term__tick span { position: absolute; top: -18px; left: 50%; transform: translateX(-50%); font-size: 10px; color: var(--ink-4); white-space: nowrap; }
.term__events { display: grid; gap: 4px; justify-items: end; font-size: 12.5px; }
.term__event { display: flex; gap: 6px; align-items: center; color: var(--ink-2); white-space: nowrap; }
.term__event b { color: var(--zhu); font-variant-numeric: tabular-nums; }
@media (max-width: 980px) {
  .term { grid-template-columns: auto minmax(0, 1fr); }
  .term__events { display: none; }
}
@media (max-width: 560px) {
  .term { grid-template-columns: 1fr; gap: 10px; padding: 14px 16px 12px; }
  .term__track { height: 26px; }
  .term__tick span { display: none; }
}

.board-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s3); }
@media (max-width: 1180px) and (min-width: 901px) { .board-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) {
  .board-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .board-card { padding: 12px; gap: 2px 10px; }
  .board-card__icon { width: 34px; height: 34px; }
  .board-card__desc { display: none; }
  .board-card__name { flex-direction: column; align-items: flex-start; gap: 3px; font-size: 15px; white-space: nowrap; }
}

.feed { overflow: hidden; }
.feed__bar { display: flex; align-items: center; gap: var(--s3); padding: 0 var(--s4); border-bottom: 1px solid var(--line); }
.feed__bar .tabs { border-bottom: 0; flex: 1; }
.feed__bar .chip { flex-shrink: 0; }

/* rail widgets */
.xxm-card { position: relative; overflow: hidden; }
.xxm-card__peek { position: absolute; right: 8px; bottom: -6px; width: 104px; filter: var(--shadow-sticker); transform: rotate(-6deg); pointer-events: none; }
.word-card {
  position: relative;
  min-height: 150px;
  perspective: 900px;
  cursor: pointer;
}
.word-card__inner { position: relative; min-height: 150px; transition: transform 600ms var(--ease-out); transform-style: preserve-3d; }
.word-card.is-flipped .word-card__inner { transform: rotateY(180deg); }
.word-card__face {
  position: absolute; inset: 0;
  display: grid; align-content: center; justify-items: center; gap: 6px;
  padding: 16px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--paper-2);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  text-align: center;
}
.word-card__face--back { transform: rotateY(180deg); background: var(--blade-yellow-soft); border-color: transparent; }
.word-card__word { font: 700 34px/1.1 var(--font-kai); color: var(--ink); }
.word-card__hint { font-size: 12px; color: var(--ink-3); }
.word-card__meaning { font-size: var(--fs-14); color: var(--ink); line-height: 1.6; }

.mini-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; }
.mini-stat { display: grid; gap: 2px; }
.mini-stat__v { font: 650 var(--fs-20)/1.1 var(--font-sans); }
.mini-stat__l { font-size: 12px; color: var(--ink-3); }
.user-cloud { display: flex; flex-wrap: wrap; gap: 6px; }

/* ----- board page ----- */
.board-head {
  position: relative;
  display: grid; grid-template-columns: auto 1fr auto; gap: 6px 16px; align-items: center;
  padding: 22px 24px;
  border-radius: var(--r-lg);
  background: linear-gradient(120deg, var(--c-soft), var(--paper-2) 70%);
  border: 1px solid var(--line);
  overflow: hidden;
}
.board-head__icon { grid-row: span 2; width: 56px; height: 56px; border-radius: 18px; display: grid; place-items: center; background: var(--c); color: #fff; transform: rotate(-6deg); box-shadow: 0 10px 20px -12px var(--c); }
:root[data-theme="dark"] .board-head__icon { color: var(--paper); }
.board-head__icon .icon { width: 28px; height: 28px; stroke-width: 2; }
.board-head__name { font: 700 var(--fs-30)/1.15 var(--font-kai); }
.board-head__desc { color: var(--ink-2); font-size: var(--fs-14); }
.board-head__cta { grid-row: span 2; }
@media (max-width: 560px) {
  .board-head { grid-template-columns: auto minmax(0, 1fr); padding: 16px; gap: 10px 14px; }
  .board-head__icon { width: 44px; height: 44px; border-radius: 14px; grid-row: auto; }
  .board-head__name { font-size: var(--fs-24); }
  .board-head__desc { grid-column: 1 / -1; }
  .board-head__cta { grid-column: 1 / -1; grid-row: auto; order: 1; }
  .board-head__cta .btn { width: 100%; }
}

/* ----- post page ----- */
.post { padding: var(--s6) var(--s8) var(--s5); }
.post__crumbs { display: flex; gap: 8px; align-items: center; margin-bottom: var(--s4); flex-wrap: wrap; }
.post__title { font: 700 clamp(24px, 3vw, 32px)/1.3 var(--font-kai); letter-spacing: .01em; overflow-wrap: anywhere; }
.post__author { display: flex; align-items: center; gap: 12px; margin: var(--s5) 0 var(--s6); padding-bottom: var(--s5); border-bottom: 1px dashed var(--line-2); }
.post__author-meta { display: grid; gap: 2px; min-width: 0; }
.post__author-sub { font-size: 12.5px; color: var(--ink-3); display: flex; gap: 8px; flex-wrap: wrap; }
.post__stamp { position: absolute; top: 22px; right: 26px; }
.post__actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: var(--s6); padding-top: var(--s4); border-top: 1px solid var(--line); }
.post__actions .spacer { flex: 1; }
.post__tags { display: flex; gap: 10px; flex-wrap: wrap; margin-top: var(--s5); }
.meta-box {
  display: flex; flex-wrap: wrap; gap: 10px 22px;
  padding: 12px 16px;
  margin-bottom: var(--s5);
  border-radius: var(--r-sm);
  background: var(--c-soft, var(--paper-3));
  font-size: var(--fs-14);
}
.meta-box__item { display: grid; gap: 2px; }
.meta-box__item small { font-size: 11.5px; color: var(--ink-3); }
.meta-box__item b { font-weight: 700; }
.price-tag {
  display: inline-flex; align-items: center;
  padding: 4px 12px 4px 18px;
  background: var(--blade-orange); color: #fff;
  font: 700 var(--fs-18)/1.2 var(--font-sans);
  clip-path: polygon(10px 0, 100% 0, 100% 100%, 10px 100%, 0 50%);
  border-radius: 0 6px 6px 0;
}
@media (max-width: 760px) {
  .post { padding: var(--s5) var(--s4) var(--s4); }
  .post__stamp { top: 14px; right: 14px; }
}

.accepted { border-color: color-mix(in srgb, var(--ok) 40%, var(--line)); background: linear-gradient(180deg, var(--ok-soft), var(--paper-2) 60%); }

.replies-head { display: flex; align-items: center; gap: 10px; padding: 0 4px; }
.reply {
  position: relative;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 4px 14px;
  padding: var(--s5) var(--s6) var(--s4);
  border-bottom: 1px solid var(--line);
}
.reply:last-child { border-bottom: 0; }
.reply.is-target { animation: flash 1.8s var(--ease-out); }
@keyframes flash { 0%, 30% { background: var(--blade-yellow-soft); } }
.reply__head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; min-height: 24px; }
.reply__floor { margin-left: auto; font: 700 12px/1 var(--font-mono); color: var(--ink-4); }
.reply__floor:hover { color: var(--shu); }
.reply__time { font-size: 12px; color: var(--ink-3); }
.reply__body { grid-column: 2; }
.reply__foot { grid-column: 2; display: flex; align-items: center; gap: 4px; margin-top: 6px; flex-wrap: wrap; }
.reply__foot .btn { color: var(--ink-3); }
.reply__deleted { color: var(--ink-4); font-style: italic; font-size: var(--fs-14); }
.quote-block {
  display: block;
  margin-bottom: 8px;
  padding: 8px 12px;
  border-radius: var(--r-sm);
  background: var(--paper-3);
  font-size: var(--fs-13);
  color: var(--ink-2);
  border-left: 3px solid var(--line-2);
}
.quote-block b { color: var(--ink); margin-right: 6px; }
a.quote-block:hover { color: var(--ink-2); border-left-color: var(--shu); }
/* 小小萌's notes: sticky note with tape */
.reply--xxm .reply__body {
  position: relative;
  padding: 14px 16px 12px;
  margin-top: 6px;
  border-radius: 4px 14px 14px 14px;
  background: var(--blade-yellow-soft);
  box-shadow: 2px 3px 0 rgba(126, 96, 0, .12);
}
.reply--xxm .reply__body::before {
  content: ""; position: absolute; top: -9px; left: 18px;
  width: 64px; height: 18px;
  background: repeating-linear-gradient(-45deg, rgba(217, 72, 59, .38) 0 5px, rgba(217, 72, 59, .24) 5px 10px);
  transform: rotate(-4deg);
}
.reply--accepted { background: linear-gradient(90deg, var(--ok-soft), transparent 60%); }
@media (max-width: 760px) {
  .reply { grid-template-columns: 32px minmax(0, 1fr); padding: var(--s4); gap: 4px 10px; }
  .reply .avatar { --size: 32px; }
}

.composer { padding: var(--s4) var(--s5) var(--s5); display: grid; gap: var(--s3); }
.composer__quote { display: flex; align-items: center; gap: 8px; font-size: var(--fs-13); color: var(--ink-2); background: var(--paper-3); padding: 6px 6px 6px 12px; border-radius: var(--r-sm); }
.composer__quote span { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.composer__locked { padding: var(--s5); text-align: center; color: var(--ink-3); }

/* editor */
.editor { border: 1px solid var(--line-2); border-radius: var(--r-md); background: var(--paper-2); overflow: hidden; transition: border-color var(--t-fast), box-shadow var(--t-fast); }
.editor:focus-within { border-color: var(--blade-blue); box-shadow: var(--focus); }
.editor__bar { display: flex; align-items: center; gap: 2px; padding: 6px 8px; border-bottom: 1px solid var(--line); background: var(--paper); overflow-x: auto; scrollbar-width: none; }
.editor__bar::-webkit-scrollbar { display: none; }
.editor__bar .icon-btn { width: 32px; height: 32px; border-radius: 8px; }
.editor__bar .icon-btn .icon { width: 17px; height: 17px; }
.editor__bar .sep { width: 1px; height: 18px; background: var(--line-2); margin: 0 4px; }
.editor__bar .segmented { margin-left: auto; flex-shrink: 0; }
.editor__bar .segmented button { height: 26px; padding: 0 10px; font-size: 12px; }
.editor textarea {
  display: block; width: 100%;
  min-height: 220px;
  padding: 12px 16px;
  border: 0; outline: none; resize: vertical;
  background: transparent;
  font: 400 var(--fs-15)/32px var(--font-sans);
  background-image: repeating-linear-gradient(180deg, transparent 0 31px, var(--ruling) 31px 32px);
  background-attachment: local;
  background-position: 0 12px;
}
.editor--compact textarea { min-height: 100px; }
.editor__preview { min-height: 220px; padding: 14px 16px; }
.editor--compact .editor__preview { min-height: 100px; }
.editor__foot { display: flex; align-items: center; gap: 10px; padding: 6px 12px; border-top: 1px solid var(--line); font-size: 12px; color: var(--ink-3); background: var(--paper); }
.editor__foot .grow { flex: 1; }
.editor.is-drag { border-color: var(--blade-blue); background: var(--blade-blue-soft); }

/* new post */
.new-post { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: var(--s6); align-items: start; }
@media (max-width: 960px) { .new-post { grid-template-columns: 1fr; } }
.board-picker { display: flex; gap: 8px; flex-wrap: wrap; }
.board-picker .chip { height: 34px; padding: 0 14px; font-size: var(--fs-13); cursor: pointer; }
.board-picker .chip .icon { width: 15px; height: 15px; }
.tag-input { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; padding: 6px 8px; min-height: 42px; border: 1px solid var(--line-2); border-radius: var(--r-sm); background: var(--paper-2); }
.tag-input:focus-within { border-color: var(--blade-blue); box-shadow: var(--focus); }
.tag-input input { flex: 1; min-width: 120px; border: 0; outline: none; background: none; height: 28px; }
.tag-input .chip button { border: 0; background: none; padding: 0; margin-left: 2px; color: inherit; display: inline-flex; }
.suggest { display: grid; gap: var(--s3); }
.suggest__item { display: grid; gap: 2px; padding: 10px 12px; border-radius: var(--r-sm); background: var(--paper); border: 1px solid var(--line); color: var(--ink); font-size: var(--fs-14); }
.suggest__item:hover { border-color: var(--line-2); color: var(--ink); }
.suggest__item small { color: var(--ink-3); font-size: 12px; }
.md-help { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; font-size: 12.5px; color: var(--ink-3); }
.md-help code { font: 12px var(--font-mono); color: var(--ink-2); background: var(--paper-3); padding: 1px 5px; border-radius: 4px; }

/* ----- faq page ----- */
.kb-hero {
  position: relative;
  padding: var(--s8) var(--s8) var(--s6);
  border-radius: var(--r-xl);
  background:
    repeating-linear-gradient(180deg, transparent 0 31px, var(--ruling) 31px 32px),
    linear-gradient(135deg, var(--blade-yellow-soft), var(--paper-2) 55%);
  border: 1px solid var(--line);
  overflow: hidden;
  display: grid; gap: var(--s4);
}
.kb-hero__title { font: 700 clamp(28px, 4vw, 40px)/1.15 var(--font-kai); }
.kb-hero__title small { display: block; font: 600 var(--fs-14)/1.6 var(--font-sans); color: var(--ink-3); margin-top: 8px; letter-spacing: 0; }
.kb-hero__xxm { position: absolute; right: 26px; bottom: -14px; width: 150px; filter: var(--shadow-sticker); transform: rotate(5deg); pointer-events: none; }
.kb-hero .ask { max-width: 620px; position: relative; z-index: 1; }
@media (max-width: 760px) {
  .kb-hero { padding: var(--s6) var(--s5) var(--s5); }
  .kb-hero__xxm { width: 78px; right: 10px; top: 14px; bottom: auto; }
  .kb-hero .eyebrow, .kb-hero__title { padding-right: 80px; }
}
.kb-cats { display: flex; gap: 8px; flex-wrap: wrap; }
.faq-list { display: grid; gap: 10px; }
.faq-acc { border-radius: var(--r-md); background: var(--paper-2); border: 1px solid var(--line); overflow: hidden; transition: box-shadow var(--t-fast), border-color var(--t-fast); }
.faq-acc[open] { box-shadow: var(--shadow-2); border-color: var(--line-2); }
.faq-acc summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 12px; align-items: start; padding: 14px 16px; }
.faq-acc summary::-webkit-details-marker { display: none; }
.faq-acc__no { font: 700 12px/22px var(--font-mono); color: var(--ink-4); }
.faq-acc__title { font: 700 var(--fs-16)/1.4 var(--font-kai); }
.faq-acc__short { font-size: var(--fs-13); color: var(--ink-3); margin-top: 2px; }
.faq-acc__chev { transition: transform var(--t-med) var(--ease-out); color: var(--ink-3); margin-top: 2px; }
.faq-acc[open] .faq-acc__chev { transform: rotate(180deg); }
.faq-acc__body { padding: 0 16px 16px 50px; display: grid; gap: 12px; animation: fade-in var(--t-med); }
@media (max-width: 560px) { .faq-acc__body { padding-left: 16px; } }
.faq-qs { display: flex; gap: 6px; flex-wrap: wrap; }
.faq-qs span { font-size: 12.5px; padding: 3px 9px; border-radius: 12px 12px 12px 3px; background: var(--paper-3); color: var(--ink-2); }
.faq-answer { font-size: var(--fs-15); line-height: 1.8; }
.faq-answer::before { content: "答"; display: inline-grid; place-items: center; width: 22px; height: 22px; margin-right: 8px; border-radius: 6px; background: var(--shu); color: var(--shu-ink); font: 700 12px/1 var(--font-kai); vertical-align: 2px; }
.faq-extra { font-size: var(--fs-14); line-height: 1.75; color: var(--ink-2); padding: 10px 12px; border-radius: var(--r-sm); background: var(--paper); border: 1px dashed var(--line-2); }
.faq-fresh { font-size: 12px; color: var(--warn); display: inline-flex; gap: 6px; align-items: center; }

/* ----- words ----- */
.words-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.word {
  position: relative;
  padding: 16px 16px 14px;
  border-radius: var(--r-md);
  background: var(--paper-2);
  border: 1px solid var(--line);
  display: grid; gap: 8px; align-content: start;
  transition: transform var(--t-med) var(--ease-out), box-shadow var(--t-med);
}
.word:hover { transform: translateY(-2px) rotate(-.4deg); box-shadow: var(--shadow-2); }
.word__w { font: 700 26px/1.1 var(--font-kai); color: var(--ink); overflow-wrap: anywhere; }
.word__m { font-size: var(--fs-14); line-height: 1.65; color: var(--ink-2); }
.word .chip { justify-self: start; }
.word--hit { animation: flash 2s var(--ease-out); }

/* ----- pulse ----- */
.pulse-hero { padding: var(--s8) 0 var(--s4); display: grid; gap: var(--s3); max-width: 760px; }
.pulse-hero h1 { font: 700 clamp(30px, 5vw, 52px)/1.12 var(--font-kai); letter-spacing: .01em; }
.pulse-hero p { color: var(--ink-2); font-size: var(--fs-16); }
.kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--s3); }
@media (max-width: 760px) { .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.kpi { padding: 16px 18px; display: grid; gap: 4px; }
.kpi__label { font-size: var(--fs-13); color: var(--ink-3); }
.kpi__value { font: 650 clamp(26px, 3.2vw, 34px)/1.1 var(--font-sans); color: var(--ink); letter-spacing: -.01em; }
.kpi__note { font-size: 12px; color: var(--ink-3); }
.viz-card { padding: var(--s5) var(--s6) var(--s5); display: grid; gap: var(--s4); }
.viz-card__head { display: flex; gap: var(--s3); align-items: flex-start; flex-wrap: wrap; }
.viz-card__title { font: 700 var(--fs-18)/1.3 var(--font-kai); }
.viz-card__sub { font-size: var(--fs-13); color: var(--ink-3); margin-top: 2px; }
.viz-card__head .segmented { margin-left: auto; }
.viz { width: 100%; display: block; overflow: visible; }
.viz text { font: 11px var(--font-sans); fill: var(--ink-3); font-variant-numeric: tabular-nums; }
.viz .viz-grid { stroke: var(--viz-grid); stroke-width: 1; }
.viz .viz-axis { stroke: var(--viz-axis); stroke-width: 1; }
.viz .viz-bar { fill: var(--viz-series-1); transition: opacity var(--t-fast); }
.viz .viz-bar.is-dim { opacity: .45; }
.viz .viz-hit { fill: transparent; cursor: crosshair; }
.viz .viz-hit:focus { outline: none; }
.viz .viz-label { fill: var(--ink-2); font-weight: 600; }
.viz .viz-cell { transition: stroke var(--t-fast); stroke: var(--viz-surface); stroke-width: 2; }
.viz .viz-cell:hover, .viz .viz-cell:focus { stroke: var(--ink); outline: none; }
.viz-legend { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--ink-3); }
.viz-legend__ramp { display: flex; height: 10px; border-radius: 3px; overflow: hidden; }
.viz-legend__ramp i { width: 22px; }
.viz-table { width: 100%; border-collapse: collapse; font-size: var(--fs-13); }
.viz-table th, .viz-table td { padding: 6px 10px; border-bottom: 1px solid var(--line); text-align: left; }
.viz-table td.num, .viz-table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.viz-table-wrap { max-height: 320px; overflow: auto; border: 1px solid var(--line); border-radius: var(--r-sm); }
.insight { display: flex; gap: 10px; align-items: flex-start; font-size: var(--fs-14); color: var(--ink-2); padding: 10px 14px; background: var(--paper); border-radius: var(--r-sm); border: 1px dashed var(--line-2); }
.insight img { width: 28px; height: 28px; border-radius: 50%; background: #fff; flex-shrink: 0; }
.topics { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; }
.topic { padding: 16px; display: grid; gap: 8px; align-content: start; }
.topic__head { display: flex; gap: 8px; align-items: center; }
.topic__title { font: 700 var(--fs-16)/1.4 var(--font-kai); }
.topic__sum { font-size: var(--fs-14); color: var(--ink-2); line-height: 1.65; }
.topic__kw { display: flex; gap: 6px; flex-wrap: wrap; }
.heat { display: inline-flex; gap: 2px; margin-left: auto; }
.heat i { width: 5px; height: 12px; border-radius: 2px; background: var(--line); }
.heat i.on { background: var(--zhu); }
.q-list { display: grid; gap: 0; }
.q-item { display: grid; grid-template-columns: 30px 1fr; gap: 10px; padding: 12px 4px; border-bottom: 1px dashed var(--line); }
.q-item:last-child { border-bottom: 0; }
.q-item__n { font: 700 var(--fs-16)/1.4 var(--font-kai); color: var(--zhu); }
.q-item__q { font-weight: 650; }
.q-item__a { font-size: var(--fs-14); color: var(--ink-2); margin-top: 2px; }

/* ----- design (case study) ----- */
.cs { display: grid; gap: var(--s14); }
.cs-hero { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: var(--s8); align-items: center; padding: var(--s10) 0 var(--s4); }
.cs-hero h1 { font: 700 clamp(34px, 5.5vw, 64px)/1.08 var(--font-kai); }
.cs-hero p { font-size: var(--fs-18); color: var(--ink-2); margin-top: var(--s5); line-height: 1.75; }
.cs-hero__art { position: relative; aspect-ratio: 1; display: grid; place-items: center; }
.cs-hero__art svg { position: absolute; inset: 0; width: 100%; height: 100%; animation: turn 90s linear infinite; }
.cs-hero__art img { position: relative; width: 62%; filter: var(--shadow-sticker); transform: rotate(-3deg); }
@media (max-width: 860px) { .cs-hero { grid-template-columns: 1fr; } .cs-hero__art { max-width: 300px; } }
.cs-sec { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: var(--s8); }
.cs-sec__label { position: sticky; top: calc(var(--header-h) + 24px); align-self: start; display: grid; gap: 8px; }
.cs-sec__no { font: 700 13px/1 var(--font-mono); color: var(--zhu); }
.cs-sec__title { font: 700 var(--fs-24)/1.25 var(--font-kai); }
.cs-sec__body { display: grid; gap: var(--s5); font-size: var(--fs-15); line-height: 1.85; color: var(--ink-2); }
.cs-sec__body h3 { font: 700 var(--fs-18)/1.4 var(--font-kai); color: var(--ink); }
@media (max-width: 860px) { .cs-sec { grid-template-columns: 1fr; gap: var(--s4); } .cs-sec__label { position: static; } }
.swatches { display: grid; grid-template-columns: repeat(auto-fill, minmax(128px, 1fr)); gap: 12px; }
.swatch { border-radius: var(--r-md); overflow: hidden; border: 1px solid var(--line); background: var(--paper-2); }
.swatch__chip { height: 84px; display: flex; align-items: flex-end; padding: 8px 10px; font: 700 12px/1 var(--font-mono); }
.swatch__meta { padding: 10px 12px; display: grid; gap: 2px; font-size: 12.5px; }
.swatch__meta b { font-size: var(--fs-14); color: var(--ink); }
.swatch__meta code { font: 12px var(--font-mono); color: var(--ink-3); }
.blade-strip { display: grid; grid-template-columns: repeat(9, 1fr); border-radius: var(--r-md); overflow: hidden; height: 64px; }
.blade-strip div { display: flex; align-items: flex-end; justify-content: center; padding-bottom: 6px; font: 700 11px/1 var(--font-kai); color: #fff; }
.type-specimen { display: grid; gap: var(--s4); padding: var(--s6); }
.type-row { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: var(--s4); align-items: baseline; border-bottom: 1px dashed var(--line); padding-bottom: var(--s3); }
.type-row:last-child { border-bottom: 0; }
.type-row small { font: 12px var(--font-mono); color: var(--ink-3); }
.comp-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: var(--s4); }
.comp { padding: var(--s5); display: grid; gap: var(--s4); align-content: start; }
.comp__name { font: 700 12px/1 var(--font-mono); color: var(--ink-3); letter-spacing: .04em; }
.principles { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: var(--s4); }
.principle { padding: var(--s5); display: grid; gap: 8px; }
.principle__n { font: 700 32px/1 var(--font-kai); color: var(--zhu); }
.principle h4 { font: 700 var(--fs-16)/1.4 var(--font-kai); color: var(--ink); }
.principle p { font-size: var(--fs-14); color: var(--ink-2); line-height: 1.75; }
.credits { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: var(--s4); }
.credit { padding: var(--s5); display: flex; gap: 14px; align-items: center; }
.credit b { display: block; color: var(--ink); }
.credit small { color: var(--ink-3); font-size: 12.5px; }

/* ----- user ----- */
.profile { position: relative; padding: 0; overflow: hidden; }
.profile__band { height: 108px; background: linear-gradient(120deg, var(--c-soft), var(--paper-3)); position: relative; }
.profile__band::after { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(180deg, transparent 0 23px, var(--ruling) 23px 24px); }
.profile__body { padding: 0 var(--s6) var(--s6); display: grid; grid-template-columns: auto 1fr auto; gap: 6px 18px; align-items: end; margin-top: -40px; position: relative; }
.profile__body .avatar { box-shadow: 0 0 0 4px var(--paper-2); }
.profile__name { font: 700 var(--fs-24)/1.2 var(--font-kai); display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.profile__bio { grid-column: 1 / -1; color: var(--ink-2); font-size: var(--fs-14); margin-top: 10px; }
.profile__stats { grid-column: 1 / -1; display: flex; gap: var(--s8); margin-top: var(--s3); }
.profile__stats div { display: grid; }
.profile__stats b { font: 650 var(--fs-20)/1.2 var(--font-sans); }
.profile__stats small { font-size: 12px; color: var(--ink-3); }
@media (max-width: 560px) { .profile__body { grid-template-columns: auto 1fr; padding: 0 var(--s4) var(--s5); } .profile__body > .btn { grid-column: 1 / -1; } }

/* ----- notifications ----- */
.notif { display: grid; grid-template-columns: 36px minmax(0, 1fr) auto; gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--line); color: var(--ink); align-items: start; }
.notif:hover { background: var(--shu-tint); color: var(--ink); }
.notif.is-unread { background: linear-gradient(90deg, var(--shu-soft), transparent 70%); }
.notif__text { font-size: var(--fs-14); line-height: 1.6; }
.notif__text b { font-weight: 650; }
.notif__post { display: block; font-size: 12.5px; color: var(--ink-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.notif__time { font-size: 12px; color: var(--ink-4); white-space: nowrap; }
.notif__icon { width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; }

/* ----- auth ----- */
.auth__head { display: grid; justify-items: center; gap: 8px; text-align: center; margin-bottom: var(--s5); }
.auth__head img { width: 120px; margin-top: -76px; filter: var(--shadow-sticker); }
.auth__title { font: 700 var(--fs-24)/1.2 var(--font-kai); }
.auth__form { display: grid; gap: var(--s4); }
.quiz { display: grid; gap: 10px; padding: 14px; border-radius: var(--r-sm); background: var(--paper); border: 1px dashed var(--line-2); }
.quiz__q { font: 700 var(--fs-15)/1.4 var(--font-kai); display: flex; gap: 8px; align-items: center; }
.quiz__opts { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.quiz__opts button { height: 38px; border-radius: var(--r-sm); border: 1px solid var(--line-2); background: var(--paper-2); font-weight: 600; font-size: var(--fs-14); transition: all var(--t-fast); }
.quiz__opts button:hover { border-color: var(--ink-4); }
.quiz__opts button[aria-pressed="true"] { background: var(--shu); border-color: var(--shu); color: var(--shu-ink); }
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }

/* ----- 404 ----- */
.lost { display: grid; justify-items: center; text-align: center; gap: var(--s4); padding: var(--s14) var(--s5); }
.lost__code { font: 700 96px/1 var(--font-kai); color: var(--line-2); letter-spacing: .05em; }
.lost img { width: 180px; filter: var(--shadow-sticker); transform: rotate(-8deg); margin-top: -56px; }

/* ----- admin ----- */
.admin-table { width: 100%; border-collapse: collapse; font-size: var(--fs-14); }
.admin-table th, .admin-table td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.admin-table th { font-size: 12px; color: var(--ink-3); font-weight: 700; }

/* about */
.rules { counter-reset: r; display: grid; gap: 12px; padding: 0; margin: 0; list-style: none; }
.rules li { counter-increment: r; display: grid; grid-template-columns: 36px 1fr; gap: 10px; }
.rules li::before { content: counter(r); font: 700 22px/1.2 var(--font-kai); color: var(--zhu); }

/* ---------- utilities ---------- */
.muted { color: var(--ink-3); }
.small { font-size: var(--fs-13); }
.tiny { font-size: 12px; }
.grow { flex: 1; }
.stack { display: grid; gap: var(--s4); }
.stack-2 { display: grid; gap: var(--s2); }
.stack-6 { display: grid; gap: var(--s6); }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.ellipsis { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.mt-2 { margin-top: var(--s2); } .mt-4 { margin-top: var(--s4); } .mt-6 { margin-top: var(--s6); }
.pad { padding: var(--s5); }
.hide-mobile { }
@media (max-width: 760px) { .hide-mobile { display: none !important; } }
.show-mobile { display: none !important; }
@media (max-width: 760px) { .show-mobile { display: revert !important; } }