/* 收野啦 — website draft styles
   Palette: xuanqing #1B3A4B, paper #F6F1E8, pine #3D5C4A,
   bronze #B8954A, date red #7A3A3A, taupe #6B6358 */

:root {
  --xuanqing: #1B3A4B;
  --xuanqing-deep: #152E3C;
  --paper: #F6F1E8;
  --paper-raised: #FBF8F3;
  --paper-shade: #E8E0D2;
  --pine: #3D5C4A;
  --pine-soft: rgba(61, 92, 74, 0.12);
  --pine-line: rgba(61, 92, 74, 0.28);
  --bronze: #B8954A;
  --bronze-soft: rgba(184, 149, 74, 0.22);
  --bronze-line: rgba(184, 149, 74, 0.55);
  --date-red: #7A3A3A;
  --taupe: #6B6358;
  --ivory-ink: #F6F1E8;
  --shadow: 0 10px 30px rgba(27, 58, 75, 0.06);
  --radius: 2px;
  --header-h: 4.25rem;
  --serif: "Noto Serif TC", "Songti TC", "Noto Serif CJK TC", "STSong", "PMingLiU", "PingFang HK", serif;
  --sans: "Noto Sans TC", "PingFang HK", "PingFang TC", "Hiragino Sans CNS", "Microsoft JhengHei", "Noto Sans CJK TC", sans-serif;
  --measure: 40rem;
  --page: 72rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--taupe);
  background-color: var(--paper);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.85;
  font-weight: 400;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.04;
  background-image: url("../assets/paper-grain.svg");
  background-size: 280px 280px;
}

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

a {
  color: var(--xuanqing);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  text-decoration-color: var(--bronze-line);
}

a:hover {
  text-decoration-color: var(--xuanqing);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--bronze);
  outline-offset: 3px;
}

h1, h2, h3, h4 {
  color: var(--xuanqing);
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.04em;
  margin: 0 0 0.8em;
}

p {
  margin: 0 0 1.1em;
}

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

strong {
  color: var(--xuanqing);
  font-weight: 600;
}

.btn,
.site-nav a,
.card-link,
.more {
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.skip-link {
  position: absolute;
  left: 0.8rem;
  top: -4rem;
  z-index: 80;
  padding: 0.5rem 0.9rem;
  background: var(--xuanqing);
  color: var(--ivory-ink);
  text-decoration: none;
}

.skip-link:focus {
  top: 0.8rem;
}

/* Header
   ----------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(246, 241, 232, 0.94);
  backdrop-filter: saturate(1.1) blur(10px);
  border-bottom: 1px solid var(--bronze-soft);
}

.header-inner {
  width: min(100% - 2rem, var(--page));
  margin: 0 auto;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--xuanqing);
}

.wordmark-name {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.45rem;
  letter-spacing: 0.16em;
  line-height: 1;
}

.wordmark-seal {
  width: 1.35rem;
  height: 1.35rem;
  border: 1px solid var(--date-red);
  color: var(--date-red);
  font-family: var(--serif);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0;
  display: grid;
  place-items: center;
  transform: rotate(-8deg);
  flex-shrink: 0;
  line-height: 1;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--xuanqing);
  background: transparent;
  color: var(--xuanqing);
  font-family: var(--sans);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  padding: 0.4rem 0.7rem;
  cursor: pointer;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.15rem 1.35rem;
}

.site-nav a {
  color: var(--xuanqing);
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
}

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

.site-nav a.nav-cta {
  border: 1px solid var(--xuanqing);
  background: var(--xuanqing);
  color: var(--ivory-ink);
  padding: 0.35rem 0.85rem;
  border-bottom: 0;
  letter-spacing: 0.08em;
}

.site-nav a.nav-cta:hover {
  background: var(--xuanqing-deep);
}

/* Layout
   ----------------------------------------------- */

.page-main {
  overflow-x: hidden;
  position: relative;
  z-index: 2;
}

.wrap {
  width: min(100% - 2rem, var(--page));
  margin: 0 auto;
}

.prose {
  max-width: var(--measure);
}

.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(232, 224, 210, 0.35), rgba(246, 241, 232, 0));
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--pine);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  margin-bottom: 0.9rem;
}

.section-kicker::before {
  content: "";
  width: 1.4rem;
  height: 1px;
  background: var(--bronze);
}

.rule {
  width: 3.25rem;
  height: 1px;
  background: var(--bronze);
  border: 0;
  margin: 1.25rem 0;
}

.rule-center {
  margin-left: auto;
  margin-right: auto;
}

/* Hero
   ----------------------------------------------- */

.hero {
  padding: 5.5rem 0 4.5rem;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 3rem 4rem;
  align-items: end;
}

.hero-brand {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(3.4rem, 11vw, 7rem);
  line-height: 1.02;
  letter-spacing: 0.14em;
  color: var(--xuanqing);
  margin: 0 0 0.6rem;
}

.hero-sub {
  font-family: var(--serif);
  color: var(--xuanqing);
  font-size: clamp(1rem, 2vw, 1.2rem);
  letter-spacing: 0.18em;
  margin: 0 0 1.2rem;
  font-weight: 500;
}

.hero-lead {
  font-size: 1.05rem;
  max-width: 36rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.hero-aside {
  position: relative;
  padding: 1.5rem 0 0.5rem 1.75rem;
  border-left: 1px solid var(--bronze-line);
}

.hero-aside p {
  margin-bottom: 1rem;
}

.hero-watermark {
  position: absolute;
  right: -0.4rem;
  top: -3.2rem;
  font-family: var(--serif);
  font-size: clamp(8rem, 22vw, 16rem);
  color: var(--xuanqing);
  opacity: 0.05;
  line-height: 1;
  pointer-events: none;
  user-select: none;
  letter-spacing: 0;
  font-weight: 700;
}

/* Buttons
   ----------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.75rem;
  padding: 0.45rem 1.2rem;
  border: 1px solid transparent;
  font-family: var(--sans);
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  text-decoration: none;
  cursor: pointer;
  line-height: 1.2;
}

.btn-primary {
  background: var(--xuanqing);
  color: var(--ivory-ink);
  border-color: var(--xuanqing);
}

.btn-primary:hover {
  background: var(--xuanqing-deep);
  color: var(--ivory-ink);
  text-decoration: none;
}

.btn-secondary {
  background: transparent;
  color: var(--pine);
  border-color: var(--pine);
}

.btn-secondary:hover {
  background: var(--pine-soft);
  color: var(--pine);
  text-decoration: none;
}

/* Pillars / cards
   ----------------------------------------------- */

.pillar-grid,
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.card,
.pillar {
  background: var(--paper-raised);
  border: 1px solid var(--paper-shade);
  padding: 1.6rem 1.45rem 1.5rem;
  box-shadow: var(--shadow);
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.pillar-num,
.step-num {
  font-family: var(--serif);
  color: var(--bronze);
  letter-spacing: 0.08em;
  font-size: 0.95rem;
  margin-bottom: 0.7rem;
}

.pillar h2,
.card h2,
.card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.65rem;
}

.card-link {
  text-decoration: none;
  color: inherit;
}

.card-link:hover {
  border-color: var(--bronze-line);
  text-decoration: none;
}

.card-link:hover h2,
.card-link:hover h3 {
  color: var(--xuanqing-deep);
}

.more {
  margin-top: auto;
  padding-top: 1.1rem;
  color: var(--pine);
  letter-spacing: 0.08em;
  font-size: 0.9rem;
  text-decoration: none;
}

.tag {
  display: inline-block;
  color: var(--pine);
  background: var(--pine-soft);
  border: 1px solid var(--pine-line);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  padding: 0.12rem 0.5rem;
  margin: 0 0.3rem 0.4rem 0;
}

.icon {
  width: 1.65rem;
  height: 1.65rem;
  margin-bottom: 0.85rem;
  color: var(--pine);
}

/* Process steps
   ----------------------------------------------- */

.steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.9rem;
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  counter-reset: step;
}

.steps li {
  position: relative;
  padding: 1.1rem 1rem 1.15rem;
  background: var(--paper-raised);
  border-top: 1px solid var(--bronze);
}

.steps h3 {
  font-size: 1.05rem;
  margin: 0 0 0.35rem;
}

.steps p {
  font-size: 0.92rem;
  margin: 0;
}

/* Product usage layout
   ----------------------------------------------- */

.usage-list {
  display: grid;
  gap: 1.1rem;
  margin: 1.5rem 0 0;
}

.usage-item {
  padding: 1.25rem 1.3rem 1.3rem;
  background: var(--paper-raised);
  border-left: 2px solid var(--bronze);
}

.usage-item h2 {
  font-size: 1.2rem;
  margin-bottom: 0.45rem;
}

.page-hero {
  padding: 3.4rem 0 2.2rem;
}

.page-hero h1 {
  font-size: clamp(1.9rem, 4.5vw, 2.8rem);
  margin-bottom: 0.5rem;
}

.crumbs {
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  margin-bottom: 1.2rem;
}

.crumbs a {
  color: var(--taupe);
  text-decoration: none;
}

.crumbs a:hover {
  color: var(--xuanqing);
  text-decoration: underline;
}

.crumbs span[aria-current="page"] {
  color: var(--xuanqing);
}

.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 2.5rem 3.5rem;
  align-items: start;
}

.note-box,
.exclude-box,
.include-box {
  padding: 1.3rem 1.35rem;
  background: var(--paper-raised);
  border: 1px solid var(--paper-shade);
}

.include-box h2,
.exclude-box h2,
.note-box h2 {
  font-size: 1.15rem;
}

.callout-list {
  margin: 0;
  padding-left: 1.1rem;
}

.callout-list li {
  margin: 0.35rem 0;
}

.examples {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem;
}

.examples .example.featured {
  grid-column: 1 / -1;
}

.example {
  padding: 1.4rem 1.25rem 1.35rem;
  background: var(--paper-raised);
  border: 1px solid var(--paper-shade);
  position: relative;
}

.example.featured {
  border-color: var(--bronze-line);
}

.example.featured-visual {
  display: grid;
  grid-template-columns: minmax(11rem, 0.8fr) 1.2fr;
  gap: 0 1.6rem;
  align-items: stretch;
  padding: 0;
  overflow: hidden;
}

.example.featured-visual .featured-photo {
  margin: 0;
  background: #efe8dc;
}

.example.featured-visual .featured-photo img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center 20%;
}

.example.featured-visual .featured-copy {
  padding: 1.35rem 1.3rem 1.35rem 0;
}

.featured-caption {
  font-size: 0.82rem;
  color: var(--taupe);
  margin: 0.85rem 0 0;
}

@media (max-width: 720px) {
  .example.featured-visual {
    grid-template-columns: 1fr;
  }

  .example.featured-visual .featured-photo img {
    height: auto;
    max-height: 26rem;
    object-fit: cover;
  }

  .example.featured-visual .featured-copy {
    padding: 1.15rem 1.25rem 1.35rem;
  }
}

.badge {
  display: inline-block;
  color: var(--xuanqing);
  border: 1px solid var(--bronze);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  padding: 0.08rem 0.45rem;
  margin-bottom: 0.7rem;
  background: transparent;
}

/* Forms
   ----------------------------------------------- */

.form {
  display: grid;
  gap: 1rem;
  max-width: 36rem;
}

.form-row {
  display: grid;
  gap: 0.35rem;
}

.form label {
  color: var(--xuanqing);
  font-size: 0.92rem;
  letter-spacing: 0.06em;
}

.form .hint {
  font-size: 0.85rem;
  color: var(--taupe);
}

.form input,
.form select,
.form textarea {
  width: 100%;
  border: 1px solid var(--paper-shade);
  background: var(--paper-raised);
  color: var(--xuanqing);
  font-family: var(--sans);
  font-size: 1rem;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius);
}

.form textarea {
  min-height: 9rem;
  resize: vertical;
}

.form .btn {
  justify-self: start;
}

.form-note,
.form-success {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-left: 2px solid var(--bronze);
  background: var(--paper-raised);
  font-size: 0.95rem;
}

.form-success[hidden] {
  display: none;
}

.draft-banner {
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--taupe);
  background: var(--paper-shade);
  padding: 0.45rem 0.8rem;
  text-align: center;
}

/* Footer
   ----------------------------------------------- */

.site-footer {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--bronze-soft);
  padding: 2.6rem 0 2rem;
  margin-top: 2rem;
}

.footer-inner {
  width: min(100% - 2rem, var(--page));
  margin: 0 auto;
  display: grid;
  gap: 0.7rem;
}

.footer-name {
  font-family: var(--serif);
  color: var(--xuanqing);
  font-size: 1.25rem;
  letter-spacing: 0.16em;
  margin: 0;
}

.footer-tag,
.footer-contact {
  margin: 0;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.1rem;
  margin: 0.5rem 0 0.3rem;
}

.footer-nav a {
  color: var(--xuanqing);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-nav a:hover {
  text-decoration: underline;
  text-decoration-color: var(--bronze);
}

.footer-note {
  margin: 0.8rem 0 0;
  font-size: 0.8rem;
  color: var(--taupe);
  opacity: 0.9;
}

/* Photo placeholder frames — sparingly used */

.photo-slot {
  display: grid;
  place-items: center;
  min-height: 10rem;
  border: 1px dashed var(--bronze-line);
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 8px,
    rgba(184, 149, 74, 0.06) 8px,
    rgba(184, 149, 74, 0.06) 9px
  );
  color: var(--taupe);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-align: center;
  padding: 1rem;
}

/* Utilities */

.mt-0 { margin-top: 0; }
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.split-lists {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem;
}

/* Mobile
   ----------------------------------------------- */

@media (max-width: 840px) {
  .hero-grid,
  .two-col,
  .pillar-grid,
  .card-grid,
  .examples,
  .split-lists {
    grid-template-columns: 1fr;
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 3.2rem;
  }

  .hero-aside {
    border-left: 0;
    padding-left: 0;
    border-top: 1px solid var(--bronze-line);
    padding-top: 1.5rem;
  }

  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--bronze-soft);
    padding: 0.4rem 1rem 1rem;
  }

  .site-header.is-open .site-nav {
    display: flex;
  }

  .site-nav a {
    padding: 0.7rem 0.2rem;
    border-bottom: 1px solid var(--paper-shade);
  }

  .site-nav a.nav-cta {
    margin-top: 0.5rem;
    text-align: center;
    border-bottom: 1px solid var(--xuanqing);
  }

  .wordmark-name {
    letter-spacing: 0.12em;
  }
}

@media (max-width: 520px) {
  body {
    font-size: 1rem;
  }

  .section {
    padding: 3.2rem 0;
  }

  .hero-brand {
    letter-spacing: 0.08em;
  }
}

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

@media print {
  @page {
    size: A4;
    margin: 14mm 14mm 16mm;
  }

  html {
    scroll-behavior: auto;
  }

  body {
    background: #F6F1E8;
    font-size: 11pt;
    line-height: 1.6;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  body::before {
    display: none;
  }

  .skip-link,
  .nav-toggle {
    display: none !important;
  }

  .site-header {
    position: static;
    backdrop-filter: none;
    background: #F6F1E8;
    border-bottom: 1px solid rgba(184, 149, 74, 0.35);
  }

  .site-nav a.nav-cta,
  .btn {
    box-shadow: none;
  }

  .hero-watermark {
    opacity: 0.08;
  }

  .site-header {
    break-after: avoid;
  }

  .site-nav {
    display: none !important;
  }

  .pillar,
  .example,
  .card,
  .step,
  .hero-aside,
  footer {
    break-inside: avoid;
  }

  .hero,
  .section {
    break-inside: auto;
    padding-top: 1.4rem;
    padding-bottom: 1.4rem;
  }

  a {
    text-decoration: none;
  }

  .example.featured-visual {
    break-inside: avoid;
    grid-template-columns: 0.75fr 1.25fr;
  }

  .example.featured-visual .featured-photo img {
    height: auto;
    max-height: 120mm;
    object-fit: contain;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}