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

:root {
  --cream: #f5e6c8;
  --paper: #fbf4e4;
  --caramel: #d4a574;
  --ink: #262117;
  --soft: rgba(38, 33, 23, 0.18);
  --faint: rgba(38, 33, 23, 0.1);
  --deep: #7a4f22;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: 'Noto Sans Thai', 'Noto Sans SC', system-ui, -apple-system, 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  font-size: 17px;
  line-height: 1.78;
  letter-spacing: 0.01em;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
  opacity: 0.15;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='150' height='150'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='150' height='150' filter='url(%23g)'/%3E%3C/svg%3E");
  background-size: 150px 150px;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 91;
  pointer-events: none;
  opacity: 0.42;
  mix-blend-mode: soft-light;
  background-image: radial-gradient(
      60% 45% at 8% 4%,
      rgba(255, 190, 120, 0.85),
      rgba(255, 190, 120, 0) 70%
    ),
    radial-gradient(45% 40% at 96% 88%, rgba(212, 165, 116, 0.7), rgba(212, 165, 116, 0) 72%);
}

h1,
h2,
h3 {
  font-weight: 700;
  line-height: 1.26;
  letter-spacing: 0.01em;
  margin: 0 0 0.6em;
}

a {
  color: var(--deep);
}

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

/* 顶部条 + 全屏遮罩菜单 */
.nav {
  position: sticky;
  top: 0;
  z-index: 70;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 18px;
  background: rgba(245, 230, 200, 0.96);
  border-bottom: 1px solid var(--soft);
}

.brand {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 6px 2px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--ink);
  text-decoration: none;
}

.brand::after {
  content: '';
  width: 26px;
  height: 3px;
  margin-left: 10px;
  background: var(--caramel);
  border-radius: 2px;
}

.burger {
  position: relative;
  z-index: 2;
  min-height: 44px;
  min-width: 76px;
  padding: 8px 16px;
  font: inherit;
  font-size: 16px;
  letter-spacing: 0.16em;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--ink);
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease;
}

.burger:hover,
.burger:focus-visible {
  background: var(--ink);
  color: var(--cream);
}

.menu {
  position: fixed;
  inset: 0;
  z-index: 1;
  margin: 0;
  padding: 90px 26px 40px;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
  color: var(--cream);
  background: linear-gradient(160deg, #2f281a 0%, #262117 60%, #1b1710 100%);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity 0.32s ease, transform 0.32s ease, visibility 0.32s;
}

.menu::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.55;
  background: radial-gradient(50% 40% at 85% 10%, rgba(212, 165, 116, 0.55), rgba(212, 165, 116, 0) 70%);
}

.menu-open .menu {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.menu li {
  position: relative;
  border-bottom: 1px dashed rgba(245, 230, 200, 0.22);
}

.menu li a {
  display: block;
  padding: 15px 4px;
  min-height: 52px;
  font-size: 20px;
  letter-spacing: 0.06em;
  color: var(--cream);
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.menu li a:hover,
.menu li a:focus-visible {
  color: var(--caramel);
  padding-left: 12px;
}

.menu-open .brand {
  color: var(--cream);
}

.menu-open .burger {
  color: var(--cream);
  border-color: var(--cream);
}

/* 主栅格 */
.main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 292px;
  gap: 0 44px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 22px 64px;
}

/* 首屏 */
.hero {
  grid-column: 1 / -1;
  position: relative;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  align-items: center;
  gap: 34px;
  min-height: 100vh;
  min-height: 100svh;
  padding: 34px 0 calc(9vh + 56px);
  overflow: hidden;
  border-bottom-left-radius: 50% 8vh;
  border-bottom-right-radius: 50% 8vh;
  background-image: radial-gradient(circle, rgba(38, 33, 23, 0.17) 1px, transparent 1.2px);
  background-size: 19px 19px;
  background-position: 4px 4px;
}

.hero-copy h1 {
  font-size: clamp(2rem, 5.4vw, 3.5rem);
  line-height: 1.18;
  margin-bottom: 0.5em;
  text-wrap: balance;
}

.hero-lead {
  max-width: 34ch;
  margin: 0 0 1.6em;
  font-size: 17px;
  color: rgba(38, 33, 23, 0.82);
}

.hero-jump {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 12px 26px;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--cream);
  text-decoration: none;
  background: var(--ink);
  border-radius: 4px;
  box-shadow: 4px 4px 0 var(--caramel);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.hero-jump:hover,
.hero-jump:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--caramel);
}

.hero-frame {
  margin: 0;
  padding: 13px 13px 46px;
  min-height: 260px;
  background: #fffaf0;
  border-radius: 4px;
  box-shadow: 0 16px 34px rgba(38, 33, 23, 0.3);
  transform: rotate(-2.2deg);
}

.hero-frame .hero-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 2px;
  filter: sepia(0.26) contrast(1.07) saturate(0.85);
  background: linear-gradient(150deg, #e7d3ac, #cbb08a);
}

.hero-frame figcaption {
  margin-top: 12px;
  font-size: 16px;
  letter-spacing: 0.22em;
  text-align: center;
  color: #8a6a3f;
}

/* 正文 */
.desk {
  grid-column: 1;
  min-width: 0;
  padding: 52px 0 20px;
  overflow-wrap: break-word;
}

.desk div {
  padding: 26px 0 34px;
  border-top: 1px solid var(--soft);
  scroll-margin-top: 96px;
}

.desk div:first-child {
  border-top: 0;
  padding-top: 0;
}

.desk h2 {
  font-size: clamp(1.45rem, 3vw, 1.95rem);
  margin: 0.15em 0 0.65em;
}

.desk h3 {
  font-size: 1.18rem;
  margin: 1.4em 0 0.5em;
  color: var(--deep);
}

.desk small {
  display: block;
  font-size: 16px;
  letter-spacing: 0.22em;
  color: #8a6a3f;
  margin-bottom: 0.15em;
}

.desk p {
  margin: 0 0 1.15em;
  max-width: 64ch;
}

.desk ul,
.desk ol {
  margin: 0 0 1.2em;
  padding-left: 1.35em;
}

.desk li {
  margin-bottom: 0.4em;
}

.desk a {
  color: var(--deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.desk a:hover {
  color: var(--ink);
}

.desk blockquote {
  margin: 1.5em 0;
  padding: 4px 0 4px 18px;
  border-left: 4px solid var(--caramel);
  color: rgba(38, 33, 23, 0.85);
}

.desk table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.4em;
  font-size: 16px;
}

.desk th,
.desk td {
  border: 1px solid var(--soft);
  padding: 9px 11px;
  text-align: left;
}

.desk th {
  background: rgba(212, 165, 116, 0.22);
}

.desk figure {
  margin: 1.6em 0;
}

/* 侧栏 */
.rail {
  grid-column: 2;
  position: sticky;
  top: 92px;
  align-self: start;
  margin-top: 60px;
  padding: 20px 18px 16px;
  background: rgba(255, 250, 240, 0.78);
  border: 1px solid var(--soft);
  border-radius: 4px;
  box-shadow: 5px 5px 0 rgba(212, 165, 116, 0.4);
}

.rail small {
  display: block;
  font-size: 16px;
  letter-spacing: 0.26em;
  color: #8a6a3f;
}

.rail h2 {
  font-size: 1.16rem;
  margin: 0.2em 0 0.7em;
}

.rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: rail;
}

.rail-list li a {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 9px 4px;
  font-size: 16px;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px dashed var(--faint);
}

.rail-list li a::before {
  counter-increment: rail;
  content: counter(rail, decimal-leading-zero);
  font-size: 15px;
  color: var(--caramel);
  letter-spacing: 0.05em;
}

.rail-list li a:hover {
  color: var(--deep);
}

.rail-top {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 10px;
  padding: 6px 0;
  font-size: 16px;
  letter-spacing: 0.12em;
  color: #8a6a3f;
  text-decoration: none;
}

/* 页脚 */
.foot {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: start;
  gap: 16px 26px;
  padding: 34px 22px 46px;
  color: var(--cream);
  background: var(--ink);
  border-top: 3px solid var(--caramel);
}

.foot-addr {
  font-style: normal;
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 16px;
}

.foot-brand {
  font-weight: 700;
  letter-spacing: 0.18em;
}

.foot-host {
  color: var(--caramel);
  word-break: break-all;
}

.foot-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-self: center;
  gap: 0 20px;
}

.foot-links li a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 16px;
  color: rgba(245, 230, 200, 0.86);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.foot-links li a:hover {
  color: var(--cream);
  border-bottom-color: var(--caramel);
}

.foot-copy {
  justify-self: end;
  margin: 0;
  padding: 11px 0;
  font-size: 16px;
  color: rgba(245, 230, 200, 0.72);
}

/* 滚动到眼前 */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.in {
  opacity: 1;
  transform: none;
}

.hero-frame.reveal {
  transform: translateY(20px) rotate(-2.2deg);
}

.hero-frame.reveal.in {
  transform: rotate(-2.2deg);
}

/* 窄屏 */
@media (max-width: 900px) {
  .main {
    grid-template-columns: minmax(0, 1fr);
    padding: 0 18px 44px;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
    padding: 26px 0 72px;
    border-bottom-left-radius: 50% 5vh;
    border-bottom-right-radius: 50% 5vh;
  }

  .hero-frame {
    transform: rotate(-1.4deg);
  }

  .desk,
  .rail {
    grid-column: 1;
  }

  .rail {
    position: static;
    margin: 10px 0 40px;
  }

  .foot {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .foot-links,
  .foot-copy {
    justify-self: start;
  }
}

@media (max-width: 420px) {
  body {
    font-size: 16px;
  }

  .hero-lead {
    font-size: 16px;
  }

  .menu li a {
    font-size: 18px;
  }

  .desk {
    padding-top: 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal,
  .hero-frame.reveal {
    transition: none;
    opacity: 1;
    transform: none;
  }

  .hero-frame,
  .hero-frame.reveal.in {
    transform: rotate(-2.2deg);
  }

  .hero-jump {
    transition: none;
  }
}

button[aria-expanded]{min-width:44px;min-height:44px}