/* shippingwang — 水墨田园 */

:root {
  --ink: #2a2a28;
  --ink-soft: #5c5a54;
  --paper: #f3efe6;
  --paper-deep: #e7e0d2;
  --moss: #4a6b4e;
  --moss-soft: #6b8f6e;
  --earth: #8b6914;
  --line: rgba(42, 42, 40, 0.12);
  --font-display: "ZCOOL XiaoWei", "Songti SC", "Noto Serif SC", serif;
  --font-body: "Noto Serif SC", "Songti SC", "Source Han Serif SC", serif;
  --pad: clamp(1.2rem, 4vw, 3rem);
  --max: 48rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.75;
  background: var(--paper);
}

/* 宣纸感 + 可选背景图 */
body.home {
  background-color: #1a1c18;
  color: #f4f0e6;
}

body.home::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(
      180deg,
      rgba(26, 28, 24, 0.35) 0%,
      rgba(26, 28, 24, 0.55) 45%,
      rgba(26, 28, 24, 0.78) 100%
    ),
    url("/assets/cambodia-angkor.jpg") center / cover no-repeat;
}

body:not(.home)::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  opacity: 0.45;
  background-image:
    radial-gradient(ellipse 80% 50% at 20% 0%, rgba(74, 107, 78, 0.08), transparent 55%),
    radial-gradient(ellipse 60% 40% at 90% 80%, rgba(139, 105, 20, 0.06), transparent 50%);
}

a {
  color: inherit;
  text-decoration: none;
}

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

.wrap {
  width: min(100% - var(--pad) * 2, var(--max));
  margin-inline: auto;
}

/* —— nav —— */
.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  border-bottom: 1px solid var(--line);
}

body.home .nav {
  background: color-mix(in srgb, #1a1c18 55%, transparent);
  border-bottom-color: rgba(244, 240, 230, 0.12);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.5rem;
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.12em;
}

.nav__mark {
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 0.2rem;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--paper-deep);
}

body.home .nav__mark {
  border-color: rgba(244, 240, 230, 0.25);
}

.nav__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.35rem;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
}

.nav__links a {
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
  padding-bottom: 0.1rem;
  transition: color 160ms ease, border-color 160ms ease;
}

body.home .nav__links a {
  color: rgba(244, 240, 230, 0.72);
}

.nav__links a:hover,
.nav__links a.is-active {
  color: var(--ink);
  border-bottom-color: var(--moss);
}

body.home .nav__links a:hover,
body.home .nav__links a.is-active {
  color: #f4f0e6;
  border-bottom-color: #c5d4a1;
}

/* —— home hero：少字 —— */
.hero {
  min-height: calc(100vh - 3.5rem);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 4rem 0 4.5rem;
}

.hero__brand {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.8rem, 10vw, 5.5rem);
  letter-spacing: 0.18em;
  line-height: 1.1;
}

.hero__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.75rem;
  margin-top: 2.25rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.2em;
}

.hero__nav a {
  color: rgba(244, 240, 230, 0.85);
  border-bottom: 1px solid rgba(244, 240, 230, 0.25);
  padding-bottom: 0.15rem;
  transition: color 160ms ease, border-color 160ms ease;
}

.hero__nav a:hover {
  color: #fff;
  border-bottom-color: #c5d4a1;
}

/* —— inner pages —— */
.page {
  padding: 3rem 0 4.5rem;
}

.page__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 6vw, 3rem);
  letter-spacing: 0.16em;
}

.page__lead {
  max-width: 28rem;
  margin: 0.85rem 0 2rem;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--line);
}

.list a {
  display: block;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.12em;
  transition: color 160ms ease, padding-left 160ms ease;
}

.list a:hover {
  color: var(--moss);
  padding-left: 0.35rem;
}

.idea-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
  gap: 0.85rem;
}

.idea {
  min-height: 8.5rem;
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  background: var(--paper-deep);
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.foot {
  padding: 1.75rem 0 2.5rem;
  border-top: 1px solid var(--line);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

body.home .foot {
  border-top-color: rgba(244, 240, 230, 0.12);
  color: rgba(244, 240, 230, 0.55);
}

.foot__inner {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 700ms ease, transform 700ms ease;
}

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

@media (max-width: 40rem) {
  .hero__nav {
    gap: 0.85rem 1.25rem;
    font-size: 1.05rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
}