@charset "UTF-8";

:root {
  --walnut: #3c2a1e;
  --wood: #6b4632;
  --lamp: #e8b45a;
  --paper: #f4ead8;
  --foam: #fff8ee;
  --ink: #241910;
  --mute: #6f5d50;
  --moss: #4a6a52;
  --rain: #2c4254;
  --nav-shadow: 2px 2px 0 rgba(36, 25, 16, 0.18);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(ellipse at 80% 0, rgba(232,180,90,0.18), transparent 42%),
    var(--paper);
  font-family: "Iowan Old Style", "Songti SC", "PingFang SC", "Microsoft YaHei", serif;
  line-height: 1.7;
}
body::after {
  content: "";
  pointer-events: none;
  position: fixed; inset: 0; z-index: 8; opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.7' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
a { color: inherit; text-decoration: none; }
button { border: 0; background: 0; font: inherit; color: inherit; cursor: pointer; }
img { display: block; max-width: 100%; }
h1, h2, h3, p, ul, figure { margin: 0; padding: 0; }
ul { list-style: none; }

@keyframes ku-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}
@keyframes ku-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(232,180,90,0.35); }
  50% { box-shadow: 0 0 22px 4px rgba(232,180,90,0.45); }
}

.ku-door {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 20px;
  background: rgba(244,234,216,0.95);
  border-bottom: 1px solid rgba(60,42,30,0.12);
}
.ku-brand { display: flex; gap: 10px; align-items: center; font-weight: 800; }
.ku-mark {
  width: 40px; height: 40px;
  object-fit: contain;
  background: #fff;
  box-shadow: var(--nav-shadow);
}
.ku-brand small { display: block; color: var(--mute); font-size: 11px; }
.ku-nav { display: flex; flex-wrap: wrap; gap: 4px; }
.ku-nav a { padding: 8px 12px; font-size: 14px; font-weight: 700; color: var(--mute); }
.ku-nav a:hover { color: var(--walnut); border-bottom: 2px solid var(--lamp); }
.ku-key {
  padding: 8px 14px; background: var(--walnut); color: var(--foam);
  font-size: 13px; font-weight: 800;
  box-shadow: var(--nav-shadow);
  font-family: "Avenir Next", "PingFang SC", sans-serif;
}
.ku-key:hover { background: var(--wood); }

.ku-wrap { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.ku-btns { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; font-family: "Avenir Next", "PingFang SC", sans-serif; }
.ku-btns a { padding: 12px 18px; font-size: 13px; font-weight: 800; }
.ku-btns .a { background: var(--walnut); color: var(--foam); box-shadow: 0 10px 22px rgba(60,42,30,0.28); }
.ku-btns .b { background: var(--lamp); color: var(--ink); box-shadow: 0 10px 22px rgba(232,180,90,0.35); }
.ku-btns .c { background: var(--foam); border: 1px solid var(--walnut); }
.ku-btns a:hover { transform: translateY(-2px); }

.ku-hero { padding: 36px 0 28px; }
.ku-hero-in {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: center;
  animation: ku-in 0.55s ease both;
}
.ku-k { font-size: 12px; letter-spacing: 0.2em; font-weight: 800; color: var(--wood); font-family: "Avenir Next", "PingFang SC", sans-serif; }
.ku-hero h1 {
  margin-top: 8px;
  font-size: clamp(42px, 5.4vw, 68px);
  line-height: 0.92; letter-spacing: -0.05em;
}
.ku-hero h1 em {
  display: block; margin-top: 10px; font-style: normal;
  font-size: 0.32em; color: var(--wood); font-weight: 700; letter-spacing: 0; line-height: 1.4;
}
.ku-hero .lede { margin-top: 12px; color: var(--mute); }
.ku-lamp {
  display: inline-block; margin-top: 18px; padding: 8px 12px;
  background: var(--foam); border-radius: 999px;
  animation: ku-glow 3.6s ease-in-out infinite;
  font-size: 12px; font-weight: 700;
}

.ku-window {
  position: relative;
  background: var(--rain);
  padding: 14px 14px 18px;
  box-shadow: 0 22px 48px rgba(28,18,12,0.28);
}
.ku-window::before, .ku-window::after {
  content: "";
  position: absolute; top: 14px; bottom: 18px; width: 10px;
  background: repeating-linear-gradient(var(--walnut), var(--walnut) 8px, #5a3d2c 8px 16px);
}
.ku-window::before { left: -6px; }
.ku-window::after { right: -6px; }
.ku-window img {
  width: 100%; height: 440px; object-fit: cover;
  box-shadow: inset 0 0 40px rgba(0,0,0,0.25);
}
.ku-sill {
  display: flex; gap: 8px; margin-top: 10px;
}
.ku-sill img {
  width: 72px; height: 92px; object-fit: cover;
  box-shadow: 0 8px 16px rgba(0,0,0,0.28);
}
.ku-sill img:hover { transform: translateY(-4px); }

.ku-plan {
  padding: 8px 0 48px;
}
.ku-plan h2 { font-size: clamp(26px, 3.6vw, 38px); margin: 8px 0 6px; }
.ku-plan .hint { color: var(--mute); margin-bottom: 18px; }
.ku-map {
  display: grid; grid-template-columns: 1.1fr 0.9fr 1fr;
  grid-template-rows: 160px 180px;
  gap: 8px;
  background: var(--wood);
  padding: 10px;
  box-shadow: 0 16px 40px rgba(60,42,30,0.2);
}
.ku-room {
  background: var(--foam);
  padding: 16px;
  box-shadow: inset 0 0 0 1px rgba(60,42,30,0.12);
  text-align: left;
}
.ku-room:hover, .ku-room.is-on {
  background: #fff3d8;
  box-shadow: inset 0 0 0 2px var(--lamp);
}
.ku-room.big { grid-column: span 2; }
.ku-room h3 { font-size: 18px; margin-bottom: 6px; }
.ku-room p { font-size: 13px; color: var(--mute); }
.ku-detail {
  margin-top: 16px;
  background: var(--foam);
  padding: 22px 24px;
  box-shadow: 0 14px 32px rgba(60,42,30,0.12);
  min-height: 120px;
}
.ku-detail h3 { margin-bottom: 8px; }

.ku-wall {
  background: var(--walnut);
  color: var(--foam);
  padding: 48px 0;
}
.ku-wall h2 { margin-bottom: 8px; }
.ku-wall .hint { opacity: 0.75; margin-bottom: 20px; }
.ku-shelves { display: grid; gap: 18px; }
.ku-shelf {
  display: flex; gap: 12px; align-items: flex-end;
  padding: 12px 12px 0;
  background: linear-gradient(#4a3326, #3c2a1e);
  box-shadow: inset 0 8px 12px rgba(0,0,0,0.28);
}
.ku-shelf figure {
  flex: 1;
  background: var(--paper);
  padding: 6px 6px 10px;
  box-shadow: 0 10px 18px rgba(0,0,0,0.3);
}
.ku-shelf img { width: 100%; height: 180px; object-fit: cover; }
.ku-shelf figcaption { font-size: 12px; color: var(--ink); text-align: center; margin-top: 4px; }
.ku-shelf figure:hover { transform: translateY(-8px); }

.ku-keys {
  padding: 48px 0;
}
.ku-keys h2 { margin-bottom: 8px; }
.ku-keys .hint { color: var(--mute); margin-bottom: 18px; }
.ku-rack {
  display: flex; flex-wrap: wrap; gap: 16px;
  padding-top: 10px;
  border-top: 6px solid var(--wood);
}
.ku-hook {
  flex: 1 1 220px;
  background: var(--foam);
  padding: 18px;
  box-shadow: 0 12px 28px rgba(60,42,30,0.1);
}
.ku-hook b { display: block; color: var(--wood); font-size: 28px; margin-bottom: 6px; }

.ku-notes {
  background: var(--moss);
  color: #eef6ea;
  padding: 48px 0;
}
.ku-notes h2 { margin-bottom: 8px; }
.ku-notes .hint { opacity: 0.85; margin-bottom: 16px; }
.ku-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
.ku-card {
  background: var(--foam); color: var(--ink);
  padding: 16px;
  box-shadow: 0 8px 0 rgba(28,40,32,0.25);
}
.ku-card time { display: block; font-size: 12px; color: var(--wood); font-weight: 700; margin-bottom: 6px; font-family: "Avenir Next", "PingFang SC", sans-serif; }
.ku-card.ask { background: var(--lamp); box-shadow: 0 8px 0 rgba(160,110,30,0.35); }
.ku-card.ask b { display: block; margin-bottom: 6px; }

.ku-porch {
  padding: 48px 20px 56px; text-align: center;
  background:
    radial-gradient(circle at 50% 0, rgba(232,180,90,0.28), transparent 50%),
    var(--paper);
}
.ku-porch h2 { font-size: clamp(28px, 4vw, 42px); margin-bottom: 10px; }
.ku-porch .ku-btns { justify-content: center; }

.ku-colo {
  padding: 18px 20px 40px;
  display: flex; flex-wrap: wrap; gap: 10px 16px; justify-content: space-between;
  font-size: 12px; color: var(--mute);
  font-family: "Avenir Next", "PingFang SC", sans-serif;
}

@media (max-width: 900px) {
  .ku-nav { display: none; }
  .ku-hero-in, .ku-map, .ku-grid { grid-template-columns: 1fr; }
  .ku-room.big { grid-column: auto; }
  .ku-window img { height: 300px; }
  .ku-shelf img { height: 140px; }
}
@media (prefers-reduced-motion: reduce) {
  .ku-hero-in, .ku-lamp { animation: none; }
  .ku-btns a:hover, .ku-shelf figure:hover, .ku-sill img:hover { transform: none; }
}