/* ============================================================
   亲子手工创意屋 · 日系极简
   近中性灰白 · 极致留白 · 1px 细线 · 无阴影无渐变 · 圆角 2px
   ============================================================ */

:root{
  --c-primary:   #7f7c62;
  --c-secondary: #7e7792;
  --c-accent:    #7a629d;
  --c-bg:        #fbfbf8;
  --c-surface:   #ffffff;
  --c-text:      #2c2b1b;
  --c-muted:     #7a775c;
  --c-border:    #e6e5db;

  --c-primary-ink: #65624c;
  --c-accent-ink:  #6b5490;

  --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --radius: 2px;
  --hairline: 1px solid var(--c-border);

  --container: 1080px;
  --pad: clamp(20px, 5vw, 40px);
}

*{ box-sizing: border-box; }

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

body{
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection{ background: rgba(122, 98, 157, .16); }

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

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

ul, ol{ margin: 0; padding: 0; }
h1, h2, h3, h4, p{ margin: 0; }

:focus-visible{ outline: 2px solid var(--c-accent); outline-offset: 2px; }

.container{ max-width: var(--container); margin: 0 auto; padding: 0 var(--pad); }

/* ---------- 顶部导航 ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--c-bg);
  border-bottom: var(--hairline);
}
.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 68px;
}
.brand{ display: inline-flex; align-items: center; gap: .7rem; }
.brand-mark{
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 1px solid var(--c-primary);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 800;
  color: var(--c-primary);
}
.brand-name{ font-weight: 800; letter-spacing: .02em; white-space: nowrap; }

.site-nav{ display: flex; gap: clamp(1.1rem, 3vw, 2rem); font-size: .92rem; }
.site-nav a{
  position: relative;
  padding: .35rem 0;
  color: var(--c-muted);
  transition: color .2s ease;
}
.site-nav a::after{
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--c-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}
.site-nav a:hover{ color: var(--c-text); }
.site-nav a:hover::after{ transform: scaleX(1); }
.site-nav a[aria-current="page"]{ color: var(--c-text); }
.site-nav a[aria-current="page"]::after{ transform: scaleX(1); background: var(--c-primary); }

/* ---------- 首屏 Hero ---------- */
.hero{ padding: clamp(84px, 12vw, 150px) 0 clamp(56px, 8vw, 96px); }
.hero-compact{ padding: clamp(64px, 9vw, 110px) 0 clamp(40px, 6vw, 72px); }

.kicker{
  display: flex;
  align-items: center;
  gap: .6em;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--c-secondary);
}
.kicker::before{
  content: "";
  width: 6px;
  height: 6px;
  background: var(--c-accent);
  flex: none;
}

.hero-title{
  margin-top: 1.6rem;
  font-size: clamp(2.4rem, 6.5vw, 4.4rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: .03em;
}
.hero-lead{
  margin-top: 1.8rem;
  max-width: 34em;
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--c-muted);
}
.hero-actions{ display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 2.6rem; }
.hero-foot{
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .6rem 2rem;
  margin-top: 4rem;
  padding-top: 1.4rem;
  border-top: var(--hairline);
  font-size: .86rem;
  color: var(--c-muted);
}

/* ---------- 按钮 ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: .5em;
  padding: .78em 1.6em;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: transparent;
  color: var(--c-text);
  font: inherit;
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: .03em;
  cursor: pointer;
  transition: background-color .25s ease, border-color .25s ease, color .25s ease;
}
.btn-primary{ background: var(--c-accent); border-color: var(--c-accent); color: #fff; }
.btn-primary:hover{ background: var(--c-accent-ink); border-color: var(--c-accent-ink); }
.btn-ghost:hover{ border-color: var(--c-primary); color: var(--c-primary); }

/* ---------- 区块 ---------- */
.section{ padding: clamp(72px, 10vw, 120px) 0; }
.section + .section{ border-top: var(--hairline); }
.section{ scroll-margin-top: 96px; }

.section-head{ max-width: 40em; }
.section-head h2{
  margin-top: 1.1rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  line-height: 1.3;
}
.section-sub{ margin-top: .9rem; font-size: .95rem; color: var(--c-muted); }

/* ---------- 分类卡片 ---------- */
.cat-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(16px, 2.5vw, 28px);
  margin-top: 3rem;
}
@media (max-width: 900px){ .cat-grid{ grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px){ .cat-grid{ grid-template-columns: 1fr; } }

.cat-card{
  display: block;
  padding: 2rem 1.7rem 1.8rem;
  background: var(--c-surface);
  border: var(--hairline);
  border-radius: var(--radius);
  transition: border-color .25s ease;
}
.cat-card:hover{ border-color: var(--c-primary); }
.cat-num{ font-size: .78rem; letter-spacing: .12em; color: var(--c-secondary); }
.cat-name{ margin-top: 1rem; font-size: 1.3rem; font-weight: 800; }
.cat-en{
  display: block;
  margin-top: .35rem;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.cat-desc{ margin-top: 1rem; font-size: .9rem; color: var(--c-muted); line-height: 1.7; }
.cat-more{
  display: inline-flex;
  align-items: center;
  gap: .45em;
  margin-top: 1.3rem;
  font-size: .84rem;
  font-weight: 700;
  color: var(--c-accent);
}
.cat-more .arrow{ transition: transform .25s ease; }
.cat-card:hover .cat-more .arrow{ transform: translateX(4px); }

/* ---------- 筛选 ---------- */
.filters{ display: flex; flex-wrap: wrap; gap: .5rem; margin: 2.4rem 0 2.6rem; }
.filter{
  padding: .5em 1.15em;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-surface);
  color: var(--c-muted);
  font: inherit;
  font-size: .9rem;
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}
.filter:hover{ border-color: var(--c-primary); color: var(--c-primary); }
.filter.is-active{ background: var(--c-accent); border-color: var(--c-accent); color: #fff; }

/* ---------- 教程卡片 ---------- */
.tut-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 32px);
}
@media (max-width: 900px){ .tut-grid{ grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px){ .tut-grid{ grid-template-columns: 1fr; } }

.card{
  display: flex;
  flex-direction: column;
  background: var(--c-surface);
  border: var(--hairline);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .25s ease;
}
.card:hover{ border-color: var(--c-primary); }
.card-media{
  position: relative;
  display: block;
  aspect-ratio: 3 / 2;
  overflow: hidden;
}
.card-media img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s ease, filter .6s ease;
  filter: saturate(.72) contrast(.98);
}
.card:hover .card-media img{ transform: scale(1.04); }
.card-cat{
  position: absolute;
  top: 12px;
  left: 12px;
  padding: .2em .75em;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  font-size: .74rem;
  font-weight: 700;
  color: var(--c-text);
}
.card-body{
  display: flex;
  flex-direction: column;
  gap: .6rem;
  flex: 1;
  padding: 1.4rem 1.5rem 1.6rem;
}
.card-title{ font-size: 1.12rem; font-weight: 800; line-height: 1.4; }
.card-title a{ transition: color .2s ease; }
.card-title a:hover{ color: var(--c-primary); }
.card-intro{
  font-size: .88rem;
  color: var(--c-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-meta{
  display: flex;
  align-items: center;
  gap: .6rem;
  margin-top: auto;
  padding-top: .8rem;
  border-top: var(--hairline);
  font-size: .8rem;
  color: var(--c-muted);
}
.dot{ width: 3px; height: 3px; border-radius: 50%; background: var(--c-border); flex: none; }

/* ---------- 本月主题（首页面板） ---------- */
.theme-panel{
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(32px, 6vw, 72px);
  padding: clamp(30px, 5vw, 60px);
  background: var(--c-surface);
  border: var(--hairline);
  border-radius: var(--radius);
}
@media (max-width: 820px){ .theme-panel{ grid-template-columns: 1fr; } }

.theme-intro h2{
  margin-top: 1.2rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  line-height: 1.3;
}
.theme-desc{ margin-top: 1.2rem; font-size: .96rem; color: var(--c-muted); max-width: 30em; }
.theme-intro .btn{ margin-top: 2rem; }

.theme-list{ border-top: var(--hairline); }
.t-item{
  display: flex;
  align-items: center;
  gap: 1.1rem;
  padding: 1.05rem .2rem;
  border-bottom: var(--hairline);
  transition: color .2s ease;
}
.t-item:hover .t-title{ color: var(--c-primary); }
.t-idx{ font-size: .78rem; letter-spacing: .1em; color: var(--c-secondary); flex: none; }
.t-info{ display: flex; flex-direction: column; gap: .15rem; min-width: 0; flex: 1; }
.t-title{ font-weight: 800; font-size: .98rem; transition: color .2s ease; }
.t-meta{ font-size: .78rem; color: var(--c-muted); }
.t-arrow{ color: var(--c-border); transition: color .2s ease, transform .25s ease; flex: none; }
.t-item:hover .t-arrow{ color: var(--c-accent); transform: translateX(4px); }

/* ---------- 教程详情 ---------- */
.tut-article{ padding: clamp(56px, 8vw, 96px) 0 clamp(80px, 10vw, 120px); }

.breadcrumb{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55em;
  margin-bottom: 3rem;
  font-size: .84rem;
  color: var(--c-muted);
}
.breadcrumb a{ transition: color .2s ease; }
.breadcrumb a:hover{ color: var(--c-accent); }

.tut-title{
  margin-top: 1.1rem;
  font-size: clamp(1.9rem, 4.6vw, 3rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: .02em;
}
.meta-line{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.1rem;
  margin: 2rem 0 2.6rem;
  padding: .95rem 0;
  border-top: var(--hairline);
  border-bottom: var(--hairline);
  font-size: .92rem;
  color: var(--c-muted);
}
.meta-line .m b{ margin-right: .4em; font-weight: 700; color: var(--c-text); }
.m-sep{ width: 1px; height: 15px; background: var(--c-border); }

.tut-hero{ margin: 0 0 2.6rem; }
.tut-hero img{
  width: 100%;
  aspect-ratio: 16 / 8;
  object-fit: cover;
  border: var(--hairline);
  border-radius: var(--radius);
  filter: saturate(.72) contrast(.98);
}

.materials{
  margin-bottom: 3rem;
  padding: 1.8rem 2rem;
  background: var(--c-surface);
  border: var(--hairline);
  border-radius: var(--radius);
}
.materials h3{
  display: flex;
  align-items: center;
  gap: .6em;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: .04em;
}
.materials h3::before{ content: ""; width: 6px; height: 6px; background: var(--c-accent); }
.materials ul{ display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.1rem; list-style: none; }
.materials li{
  padding: .32em .95em;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  font-size: .88rem;
  color: var(--c-text);
}

.tut-body{ max-width: 62ch; }
.tut-body h2{
  margin: 3rem 0 1.2rem;
  padding-top: 1.1rem;
  border-top: var(--hairline);
  font-size: 1.32rem;
  font-weight: 800;
  line-height: 1.4;
}
.tut-body h2:first-child{ margin-top: 0; padding-top: 0; border-top: 0; }
.tut-body h3{ margin: 2rem 0 1rem; font-size: 1.05rem; font-weight: 800; }
.tut-body p{ margin: 0 0 1.2rem; color: #3a3927; }
.tut-body ul, .tut-body ol{ padding-left: 1.35em; margin: 0 0 1.4rem; }
.tut-body li{ margin-bottom: .65rem; padding-left: .2em; }
.tut-body ol li::marker{ color: var(--c-accent); font-weight: 700; }
.tut-body strong{ font-weight: 800; color: var(--c-primary); }
.tut-body em{ color: var(--c-secondary); }
.tut-body blockquote{
  margin: 2rem 0;
  padding: .5rem 0 .5rem 1.3rem;
  border-left: 2px solid var(--c-accent);
  color: var(--c-muted);
  font-size: .94rem;
}
.tut-body img{ margin: 1.6rem 0; border: var(--hairline); border-radius: var(--radius); }
.tut-body hr{ margin: 2.6rem 0; border: 0; border-top: var(--hairline); }
.tut-body code{
  padding: .12em .45em;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  font-size: .88em;
}
.tut-body pre{
  padding: 1.1rem 1.3rem;
  background: var(--c-bg);
  border: var(--hairline);
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: .88rem;
  margin: 1.6rem 0;
}
.tut-body a{ color: var(--c-accent); border-bottom: 1px solid var(--c-border); transition: border-color .2s ease; }
.tut-body a:hover{ border-color: var(--c-accent); }

.loading{ color: var(--c-muted); }
.error-note{
  margin-top: 2rem;
  padding: 2rem;
  border: var(--hairline);
  border-radius: var(--radius);
  background: var(--c-surface);
  color: var(--c-muted);
}
.error-note h1{ margin: 1rem 0 .6rem; font-size: 1.6rem; font-weight: 800; }
.error-note .btn{ margin-top: 1.4rem; }

/* 上下篇 */
.pn-nav{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 4rem;
  padding-top: 2.6rem;
  border-top: var(--hairline);
}
@media (max-width: 560px){ .pn-nav{ grid-template-columns: 1fr; } }
.pn{
  display: block;
  padding: 1.2rem 1.4rem;
  background: var(--c-surface);
  border: var(--hairline);
  border-radius: var(--radius);
  transition: border-color .25s ease;
}
.pn:hover{ border-color: var(--c-primary); }
.pn.next{ text-align: right; }
.pn .lbl{
  display: block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.pn .tt{ display: block; margin-top: .4rem; font-weight: 800; }

/* 同类教程 */
.related{ margin-top: 5rem; padding-top: 3rem; border-top: var(--hairline); }
.related h2{ margin-top: 1rem; font-size: 1.5rem; font-weight: 800; }
.related .tut-grid{ margin-top: 2.4rem; }

/* ---------- 主题页：双栏 ---------- */
.split{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 6vw, 84px);
}
@media (max-width: 820px){ .split{ grid-template-columns: 1fr; } }
.split > * + *{
  border-left: var(--hairline);
  padding-left: clamp(28px, 5vw, 56px);
}
@media (max-width: 820px){
  .split > * + *{ border-left: 0; padding-left: 0; padding-top: 2.6rem; border-top: var(--hairline); }
}
.split h2{ margin-top: 1rem; font-size: 1.5rem; font-weight: 800; }

.plain-list{ margin-top: 1.6rem; list-style: none; }
.plain-list li{
  position: relative;
  padding: 1rem 0 1rem 1.7rem;
  border-bottom: var(--hairline);
  color: var(--c-muted);
  font-size: .95rem;
}
.plain-list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: 1.42rem;
  width: 6px;
  height: 6px;
  background: var(--c-accent);
}

.archive-list{ margin-top: 1.6rem; list-style: none; }
.archive-item{
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: var(--hairline);
}
.a-range{ font-size: .88rem; letter-spacing: .05em; color: var(--c-muted); }
.a-info b{ display: block; margin-bottom: .25rem; font-weight: 800; }
.a-desc{ font-size: .86rem; color: var(--c-muted); }
.next-theme{ margin-top: 1.8rem; font-size: .92rem; font-weight: 700; color: var(--c-accent); }

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top: 5rem;
  padding: 3.2rem 0 2.6rem;
  border-top: var(--hairline);
}
.foot-top{
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.4rem 2rem;
  padding-bottom: 2.2rem;
  border-bottom: var(--hairline);
}
.foot-nav{ display: flex; flex-wrap: wrap; gap: 1.6rem; font-size: .9rem; color: var(--c-muted); }
.foot-nav a{ transition: color .2s ease; }
.foot-nav a:hover{ color: var(--c-accent); }
.foot-bottom{
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .6rem 2rem;
  padding-top: 1.6rem;
  font-size: .84rem;
  color: var(--c-muted);
}

/* ---------- 滚动显现（克制微动效） ---------- */
[data-reveal]{
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .6s ease, transform .6s ease;
}
[data-reveal].is-in{ opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{
    animation: none !important;
    transition: none !important;
  }
  [data-reveal]{ opacity: 1; transform: none; }
}