:root {
  --bg: #f6f1e8;
  --ink: #1c1916;
  --muted: #5c5348;
  --line: #d7cfc2;
  --paper: #fffdf8;
  --accent: #6b3f24;
  --guard: #c9b49a;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Sarabun", "Noto Sans Thai", "Leelawadee UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  font-size: 1.125rem;
}

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

a:hover {
  text-decoration-thickness: 2px;
}

.top,
main,
footer {
  width: min(720px, calc(100% - 32px));
  margin-left: auto;
  margin-right: auto;
}

.top {
  padding: 20px 0 0;
}

.brand-block {
  display: block;
  text-decoration: none;
  color: inherit;
}

.brand-block:hover {
  text-decoration: none;
}

.brand {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.tag {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.menu {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin: 12px 0 0;
  padding: 10px 0 0;
  border-top: 1px solid var(--line);
  font-size: 0.98rem;
}

.menu a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.menu a:hover,
.menu a[aria-current="page"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

main {
  padding-bottom: 40px;
}

section {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 20px 20px 16px;
  margin-top: 14px;
}

.lead {
  margin-top: 14px;
  padding-bottom: 14px;
}

h1,
h2,
h3 {
  margin: 0 0 10px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--accent);
}

h1 {
  font-size: 1.55rem;
}

h2 {
  font-size: 1.28rem;
}

h3 {
  font-size: 1.08rem;
  margin-top: 14px;
}

h3:first-child {
  margin-top: 0;
}

p {
  margin: 0 0 10px;
}

p:last-child,
ul:last-child,
ol:last-child,
dl:last-child {
  margin-bottom: 0;
}

ul,
ol {
  margin: 0 0 10px;
  padding-left: 1.2em;
}

li + li {
  margin-top: 6px;
}

.now {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 12px 0 0;
  padding: 0;
}

.now div {
  margin: 0;
  padding: 10px 0 0;
  border-top: 1px solid var(--line);
}

.now dt {
  margin: 0 0 2px;
  font-weight: 700;
  color: var(--accent);
}

.now dd {
  margin: 0;
}

.guard {
  border-color: var(--guard);
}

.step {
  margin-top: 14px;
}

.step h2 {
  font-size: 1.2rem;
}

.num {
  display: inline-block;
  margin-right: 6px;
  font-weight: 700;
}

.channels {
  list-style: none;
  padding: 0;
}

.channels li {
  margin: 0;
  padding: 10px 0;
  border-top: 1px solid var(--line);
}

.channels li:first-child {
  border-top: 0;
  padding-top: 0;
}

.channels span {
  display: block;
  color: var(--muted);
  font-size: 0.95rem;
}

.form label {
  display: block;
  margin: 12px 0 4px;
  font-weight: 700;
  color: var(--accent);
}

.form label:first-child {
  margin-top: 0;
}

.form input,
.form textarea {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  padding: 10px 12px;
}

.form textarea {
  min-height: 160px;
  resize: vertical;
}

.form input:focus,
.form textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.action,
.form button {
  display: inline-block;
  margin-top: 12px;
  font: inherit;
  font-weight: 700;
  color: var(--accent);
  background: var(--paper);
  border: 1px solid var(--accent);
  padding: 10px 16px;
  text-decoration: none;
  cursor: pointer;
}

.action:hover,
.form button:hover {
  text-decoration: none;
  background: #fff;
}

.notice {
  margin: 0 0 12px;
  padding: 10px 12px;
  border: 1px solid var(--line);
}

.notice.ok {
  border-color: var(--accent);
}

.notice.bad {
  border-color: #8a3b2a;
}

.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.inbox {
  list-style: none;
  padding: 0;
  margin: 0;
}

.inbox li {
  margin: 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--line);
}

.inbox li:first-child {
  border-top: 0;
  padding-top: 0;
}

.inbox .meta {
  color: var(--muted);
  font-size: 0.95rem;
}

.inbox p {
  white-space: pre-wrap;
}

footer {
  padding: 4px 0 36px;
  color: var(--muted);
  font-size: 0.98rem;
}

footer p {
  margin: 0 0 8px;
}

footer p:last-child {
  margin-bottom: 0;
}

@media (min-width: 640px) {
  body {
    font-size: 1.125rem;
  }

  .top {
    padding-top: 28px;
  }

  .brand {
    font-size: 1.5rem;
  }

  h1 {
    font-size: 1.7rem;
  }

  section {
    padding: 22px 24px 18px;
  }

  .now {
    grid-template-columns: 1fr 1fr;
    gap: 12px 24px;
  }

  .now div {
    padding-top: 10px;
  }

  .now div:nth-child(-n + 2) {
    border-top: 0;
    padding-top: 0;
  }
}

@media (max-width: 399px) {
  body {
    font-size: 1.05rem;
  }

  .top,
  main,
  footer {
    width: min(720px, calc(100% - 24px));
  }

  .top {
    padding-top: 14px;
  }

  .lead {
    margin-top: 10px;
    padding: 14px 14px 12px;
  }

  h1 {
    font-size: 1.35rem;
    margin-bottom: 8px;
  }

  .now {
    gap: 8px;
    margin-top: 8px;
  }

  .now dt {
    font-size: 0.98rem;
  }

  .menu {
    font-size: 0.92rem;
    gap: 4px 12px;
  }
}

@media (max-width: 639px) and (max-height: 740px) {
  .top {
    padding-top: 10px;
  }

  .brand {
    font-size: 1.2rem;
  }

  .tag {
    font-size: 0.88rem;
  }

  .menu {
    margin-top: 8px;
    padding-top: 8px;
  }

  .lead {
    margin-top: 8px;
    padding: 12px 14px 10px;
  }

  .lead h1 {
    font-size: 1.28rem;
    margin-bottom: 6px;
  }

  .lead p {
    margin-bottom: 8px;
  }

  .now {
    margin-top: 6px;
    gap: 6px;
  }

  .now div {
    padding-top: 6px;
  }
}