/* ==========================================================================
   儿童手工创意工坊 · 新中式风格
   水墨留白 · 低饱和暖灰 · 细描金 · 东方排版韵律
   ========================================================================== */

:root {
  /* —— 视觉设计规范配色 —— */
  --c-primary: #a79639;      /* 主色：描金 */
  --c-primary-deep: #8d7e2e;
  --c-secondary: #6451b8;    /* 辅助色：黛紫 */
  --c-accent: #b4cb34;       /* 强调色：柳黄绿（CTA/高亮） */
  --c-bg: #fbfbf8;           /* 页面背景：纸白 */
  --c-surface: #ffffff;      /* 卡片 / 表面 */
  --c-ink: #2c2a1b;          /* 正文文字：浓墨 */
  --c-ink-soft: #7a765c;     /* 次要文字：淡墨 */
  --c-line: #e6e4db;         /* 描边：细灰 */
  --c-line-gold: rgba(167, 150, 57, 0.38);

  /* —— 字体 —— */
  --font-title: 'Noto Serif SC', 'Songti SC', 'STSong', Georgia, 'Times New Roman', serif;
  --font-body: system-ui, -apple-system, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Segoe UI', sans-serif;

  /* —— 圆角与节奏 —— */
  --r: 4px;
  --r-lg: 4px;
  --shadow-soft: 0 1px 2px rgba(44, 42, 27, 0.04), 0 6px 24px rgba(44, 42, 27, 0.05);
  --shadow-lift: 0 2px 4px rgba(44, 42, 27, 0.06), 0 14px 34px rgba(44, 42, 27, 0.10);
  --maxw: 1180px;
  --space: clamp(1.1rem, 3vw, 2rem);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-ink);
  background:
    radial-gradient(1200px 500px at 8% -6%, rgba(167, 150, 57, 0.07), transparent 60%),
    radial-gradient(900px 460px at 96% 8%, rgba(100, 81, 184, 0.05), transparent 55%),
    var(--c-bg);
  min-height: 100vh;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0; }

/* 细描金 · 页面两侧的竖向发丝线，构成东方框景 */
.page-frame {
  position: relative;
}
.page-frame::before,
.page-frame::after {
  content: "";
  position: fixed;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--c-line-gold) 12%, var(--c-line-gold) 88%, transparent);
  opacity: .55;
  z-index: 3;
  pointer-events: none;
}
.page-frame::before { left: max(12px, calc((100vw - var(--maxw)) / 2 - 26px)); }
.page-frame::after { right: max(12px, calc((100vw - var(--maxw)) / 2 - 26px)); }

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

/* ==========================================================================
   顶部导航
   ========================================================================== */
.site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid var(--c-line);
  background: rgba(251, 251, 248, 0.86);
  backdrop-filter: blur(6px);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.9rem var(--space);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}
/* 描金印章 */
.seal {
  width: 44px; height: 44px;
  border: 1.5px solid var(--c-primary);
  border-radius: var(--r);
  display: grid;
  place-items: center;
  color: var(--c-primary);
  font-family: var(--font-title);
  font-size: 0.82rem;
  line-height: 1.15;
  letter-spacing: 0.16em;
  text-align: center;
  writing-mode: vertical-rl;
  padding: 4px 0;
  position: relative;
  transition: transform .45s cubic-bezier(.34,1.56,.64,1), box-shadow .3s;
}
.seal::after {
  content: "";
  position: absolute;
  inset: 3px;
  border: 1px solid rgba(167, 150, 57, 0.35);
  border-radius: 2px;
}
.brand:hover .seal { transform: rotate(-4deg) scale(1.03); }
.brand-name {
  font-family: var(--font-title);
  font-size: 1.22rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-ink);
  white-space: nowrap;
}
.brand-name small {
  display: block;
  font-family: var(--font-body);
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.42em;
  color: var(--c-ink-soft);
  margin-top: 2px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.nav-links a {
  padding: 0.42rem 0.95rem;
  border-radius: var(--r);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  color: var(--c-ink-soft);
  position: relative;
  transition: color .25s, background .25s;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 2px;
  width: 0; height: 1px;
  background: var(--c-primary);
  transform: translateX(-50%);
  transition: width .3s ease;
}
.nav-links a:hover { color: var(--c-ink); }
.nav-links a:hover::after { width: 60%; }
.nav-links a.active { color: var(--c-primary); }
.nav-links a.active::after { width: 60%; }

/* ==========================================================================
   通用章节
   ========================================================================== */
.section { padding: calc(var(--space) * 2.2) 0; }
.section-head {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  margin-bottom: 1.6rem;
}
.section-no {
  font-family: var(--font-title);
  font-size: 0.95rem;
  color: var(--c-primary);
  letter-spacing: 0.2em;
}
.section-title {
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-ink);
  margin: 0;
}
.section-sub {
  font-size: 0.9rem;
  color: var(--c-ink-soft);
  letter-spacing: 0.06em;
}

/* 描金发丝分隔线 */
.hairline {
  height: 1px;
  border: 0;
  background: linear-gradient(to right, var(--c-line-gold), transparent);
  margin: 0;
}

/* ==========================================================================
   Hero 水墨留白
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2.6rem, 7vw, 5.2rem) 0 clamp(2rem, 5vw, 3.6rem);
}
.hero-ink {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .9;
}
.hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--space);
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: center;
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.82rem;
  letter-spacing: 0.34em;
  color: var(--c-secondary);
  margin-bottom: 1.1rem;
}
.hero-kicker::before {
  content: "";
  width: 2.2rem; height: 1px;
  background: var(--c-secondary);
  opacity: .7;
}
.hero h1 {
  font-family: var(--font-title);
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.32;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin: 0 0 0.4rem;
}
.hero h1 .gold { color: var(--c-primary); }
.hero h1 .thin { font-weight: 400; color: var(--c-ink); }
.hero-desc {
  margin: 1rem 0 1.8rem;
  color: var(--c-ink-soft);
  font-size: 1.02rem;
  max-width: 34em;
}
.hero-desc strong { color: var(--c-ink); font-weight: 600; }
.hero-actions { display: flex; gap: 0.9rem; flex-wrap: wrap; }

/* 竖向留白小字（东方排版节奏） */
.hero-verse {
  position: absolute;
  right: calc((100vw - var(--maxw)) / 2 + 6px);
  bottom: 1.4rem;
  writing-mode: vertical-rl;
  font-family: var(--font-title);
  color: var(--c-primary);
  opacity: .5;
  letter-spacing: 0.4em;
  font-size: 0.78rem;
  z-index: 1;
  pointer-events: none;
  display: none;
}
@media (min-width: 900px) { .hero-verse { display: block; } }

/* 印章式 CTA 图形 */
.hero-emblem {
  display: none;
  position: relative;
  z-index: 1;
}
@media (min-width: 860px) { .hero-emblem { display: block; } }
.emblem-figure {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 0.9;
  display: grid;
  place-items: center;
}
.emblem-figure svg {
  width: 100%; height: 100%;
  animation: slowDrift 9s ease-in-out infinite alternate;
}
@keyframes slowDrift {
  from { transform: translateY(0) rotate(0deg); }
  to   { transform: translateY(-10px) rotate(-1.2deg); }
}
.emblem-quote {
  margin-top: 1.2rem;
  text-align: center;
  font-family: var(--font-title);
  color: var(--c-ink-soft);
  font-size: 0.92rem;
  letter-spacing: 0.22em;
}
.emblem-quote b { color: var(--c-primary); font-weight: 600; }

/* ==========================================================================
   按钮
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--c-line-gold);
  background: var(--c-surface);
  color: var(--c-ink);
  border-radius: var(--r);
  padding: 0.72rem 1.4rem;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  position: relative;
  overflow: hidden;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 40%, rgba(255, 255, 255, 0.35) 50%, transparent 60%);
  transform: translateX(-120%);
  transition: transform .6s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-lift); border-color: var(--c-primary); }
.btn:hover::before { transform: translateX(120%); }
.btn-gold {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
  font-family: var(--font-title);
  font-weight: 600;
}
.btn-gold:hover { background: var(--c-primary-deep); border-color: var(--c-primary-deep); }
.btn-accent {
  background: var(--c-accent);
  color: #24280c;
  border-color: var(--c-accent);
  font-family: var(--font-title);
  font-weight: 600;
}
.btn-accent:hover { filter: brightness(1.04); border-color: #a2b72c; }
.btn-ghost {
  background: transparent;
  color: var(--c-ink-soft);
  border-color: var(--c-line);
}
.btn-ghost:hover { color: var(--c-primary); border-color: var(--c-primary); box-shadow: none; }
.btn-sm { padding: 0.5rem 1rem; font-size: 0.86rem; }

/* ==========================================================================
   筛选（材料 / 节日）
   ========================================================================== */
.filter-bar { margin-bottom: 2rem; }
.filter-label {
  font-family: var(--font-title);
  font-size: 0.86rem;
  letter-spacing: 0.3em;
  color: var(--c-ink-soft);
  margin-bottom: 0.7rem;
  display: block;
}
.chips { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.chip {
  border: 1px solid var(--c-line);
  background: var(--c-surface);
  color: var(--c-ink-soft);
  border-radius: var(--r);
  padding: 0.42rem 1.05rem;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  transition: all .25s;
  position: relative;
}
.chip:hover { border-color: var(--c-primary); color: var(--c-primary); transform: translateY(-1px); }
.chip.active {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: #fff;
}
.chip.fest-active {
  background: var(--c-secondary);
  border-color: var(--c-secondary);
  color: #fff;
}
.chip .count {
  display: inline-block;
  margin-left: 0.35rem;
  font-size: 0.74rem;
  opacity: .75;
}

/* ==========================================================================
   教程卡片
   ========================================================================== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: clamp(1.1rem, 2.4vw, 1.8rem);
}
.grid.wide { grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }

.card {
  position: relative;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--r);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .35s cubic-bezier(.22,1,.36,1), box-shadow .35s, border-color .35s;
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lift);
  border-color: var(--c-line-gold);
}
.card-art {
  position: relative;
  aspect-ratio: 5 / 3.4;
  overflow: hidden;
  background: linear-gradient(160deg, #fdfdfb, #f6f5ef);
  border-bottom: 1px solid var(--c-line);
}
.card-art img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .8s cubic-bezier(.22,1,.36,1);
}
.card:hover .card-art img { transform: scale(1.045); }
.card-tag {
  position: absolute;
  top: 0.8rem; left: 0;
  z-index: 2;
  background: var(--c-secondary);
  color: #fff;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  padding: 0.22rem 0.75rem 0.22rem 0.9rem;
  border-radius: 0 var(--r) var(--r) 0;
  box-shadow: 0 1px 3px rgba(100, 81, 184, 0.35);
}
.card-tag.is-gold { background: var(--c-primary); box-shadow: 0 1px 3px rgba(167, 150, 57, 0.4); }
.card-body { padding: 1.1rem 1.2rem 1.25rem; display: flex; flex-direction: column; flex: 1; }
.card-title {
  font-family: var(--font-title);
  font-size: 1.14rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin: 0 0 0.3rem;
}
.card-sub {
  font-size: 0.88rem;
  color: var(--c-ink-soft);
  margin-bottom: 0.9rem;
  letter-spacing: 0.03em;
}
.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  margin-top: auto;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--c-line);
  font-size: 0.8rem;
  color: var(--c-ink-soft);
}
.card-meta span { display: inline-flex; align-items: center; gap: 0.3rem; }
.card-meta svg { width: 14px; height: 14px; opacity: .7; }
.card-link::after { content: ""; position: absolute; inset: 0; z-index: 1; }

/* 难度点 */
.dots { display: inline-flex; gap: 3px; align-items: center; }
.dots i { width: 7px; height: 7px; border-radius: 50%; background: var(--c-line); }
.dots i.on { background: var(--c-primary); }
.dots i.on.p { background: var(--c-secondary); }

/* ==========================================================================
   步骤折叠面板
   ========================================================================== */
.steps { display: flex; flex-direction: column; gap: 0.75rem; }
.step {
  border: 1px solid var(--c-line);
  border-radius: var(--r);
  background: var(--c-surface);
  overflow: hidden;
  transition: border-color .3s, box-shadow .3s;
}
.step.open { border-color: var(--c-line-gold); box-shadow: var(--shadow-soft); }
.step-head {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.95rem 1.1rem;
  background: none;
  border: 0;
  text-align: left;
}
.step-no {
  flex: 0 0 auto;
  width: 30px; height: 30px;
  border-radius: 50%;
  border: 1px solid var(--c-primary);
  color: var(--c-primary);
  font-family: var(--font-title);
  font-size: 0.9rem;
  display: grid;
  place-items: center;
  transition: all .3s;
}
.step.open .step-no { background: var(--c-primary); color: #fff; }
.step-title {
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  flex: 1;
}
.step-chev {
  flex: 0 0 auto;
  width: 22px; height: 22px;
  border: 1px solid var(--c-line);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--c-ink-soft);
  transition: transform .35s, color .3s, border-color .3s;
}
.step.open .step-chev { transform: rotate(180deg); color: var(--c-primary); border-color: var(--c-primary); }
.step-body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .45s cubic-bezier(.22,1,.36,1);
}
.step.open .step-body { grid-template-rows: 1fr; }
.step-body > div { overflow: hidden; }
.step-desc {
  padding: 0 1.1rem 1.1rem 2rem;
  color: var(--c-ink-soft);
  font-size: 0.95rem;
}

/* ==========================================================================
   材料清单
   ========================================================================== */
.materials {
  border: 1px solid var(--c-line);
  border-radius: var(--r);
  background: var(--c-surface);
  overflow: hidden;
}
.materials-head {
  padding: 0.95rem 1.2rem;
  border-bottom: 1px dashed var(--c-line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}
.materials-head h3 {
  font-family: var(--font-title);
  font-size: 1.05rem;
  margin: 0;
  letter-spacing: 0.08em;
}
.materials-count { font-size: 0.8rem; color: var(--c-ink-soft); }
.materials ul { padding: 0.4rem 1.2rem 0.8rem; }
.materials li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.55rem 0;
  border-bottom: 1px dotted var(--c-line);
  font-size: 0.95rem;
}
.materials li:last-child { border-bottom: 0; }
.materials li .m-name { display: inline-flex; align-items: center; gap: 0.55rem; }
.materials li .m-name i {
  width: 6px; height: 6px;
  transform: rotate(45deg);
  background: var(--c-primary);
  opacity: .8;
  flex: 0 0 auto;
}
.materials li .m-count {
  color: var(--c-ink-soft);
  font-size: 0.88rem;
  background: #f6f5ee;
  border: 1px solid var(--c-line);
  border-radius: var(--r);
  padding: 0.1rem 0.6rem;
  white-space: nowrap;
}

/* ==========================================================================
   详情页
   ========================================================================== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.86rem;
  color: var(--c-ink-soft);
  padding-top: 1.4rem;
}
.breadcrumb a { color: var(--c-ink-soft); transition: color .2s; }
.breadcrumb a:hover { color: var(--c-primary); }
.breadcrumb .sep { opacity: .5; }

.tutorial-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
  padding: 2.2rem 0 1.6rem;
}
.tutorial-flag {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--c-secondary);
  margin-bottom: 0.9rem;
}
.tutorial-flag::before { content: "◆"; font-size: 0.6rem; }
.tutorial-hero h1 {
  font-family: var(--font-title);
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  line-height: 1.35;
  letter-spacing: 0.05em;
  margin: 0 0 0.6rem;
}
.tutorial-sub {
  font-family: var(--font-title);
  color: var(--c-ink-soft);
  letter-spacing: 0.12em;
  font-size: 1rem;
  margin-bottom: 1.2rem;
}
.tutorial-intro {
  color: var(--c-ink-soft);
  font-size: 1rem;
  max-width: 42em;
  padding-left: 0.9rem;
  border-left: 2px solid var(--c-primary);
}
.meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.6rem;
  margin: 1.3rem 0 0;
  padding: 0.9rem 0;
  border-top: 1px dashed var(--c-line);
  border-bottom: 1px dashed var(--c-line);
}
.meta-item { display: inline-flex; align-items: center; gap: 0.45rem; font-size: 0.9rem; color: var(--c-ink); }
.meta-item svg { width: 16px; height: 16px; color: var(--c-primary); }
.meta-item b { color: var(--c-ink); font-weight: 600; }
.meta-item .lbl { color: var(--c-ink-soft); }

.tutorial-art-wrap {
  position: relative;
  border: 1px solid var(--c-line);
  border-radius: var(--r);
  background: var(--c-surface);
  padding: 1rem;
  box-shadow: var(--shadow-soft);
}
.tutorial-art-wrap img {
  width: 100%;
  height: auto;
  border-radius: 2px;
}
.art-caption {
  text-align: center;
  font-size: 0.8rem;
  color: var(--c-ink-soft);
  letter-spacing: 0.24em;
  padding: 0.7rem 0 0.2rem;
}
.art-caption b { color: var(--c-primary); font-weight: 600; }

.panel-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(1.4rem, 3vw, 2.4rem);
  align-items: start;
  padding: 2rem 0;
}

/* 成品展示 · 卷轴 */
.finished-card {
  border: 1px solid var(--c-line-gold);
  border-radius: var(--r);
  background: linear-gradient(180deg, #ffffff, #faf8f1);
  padding: 1.6rem 1.5rem;
  position: relative;
}
.finished-card::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(167, 150, 57, 0.22);
  border-radius: 2px;
  pointer-events: none;
}
.finished-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-title);
  color: var(--c-primary);
  letter-spacing: 0.3em;
  font-size: 0.82rem;
  margin-bottom: 0.9rem;
}
.finished-label::after { content: ""; flex: 1; height: 1px; background: linear-gradient(to right, var(--c-line-gold), transparent); }
.finished-quote {
  font-family: var(--font-title);
  font-size: 1.12rem;
  line-height: 2;
  color: var(--c-ink);
}
.tips-card {
  margin-top: 1.4rem;
  border: 1px solid var(--c-line);
  border-radius: var(--r);
  background: var(--c-surface);
  padding: 1.3rem 1.4rem;
}
.tips-card h3 {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-title);
  font-size: 1rem;
  letter-spacing: 0.1em;
  margin: 0 0 0.7rem;
  color: var(--c-ink);
}
.tips-card h3::before { content: "※"; color: var(--c-primary); }
.tips-card p { color: var(--c-ink-soft); font-size: 0.95rem; }

/* 亲子安全提示 */
.safe-note {
  display: flex;
  gap: 0.8rem;
  align-items: flex-start;
  margin-top: 1.4rem;
  border: 1px solid rgba(180, 203, 52, 0.5);
  background: rgba(180, 203, 52, 0.08);
  border-radius: var(--r);
  padding: 0.9rem 1rem;
  font-size: 0.88rem;
  color: var(--c-ink);
}
.safe-note .safe-mark {
  flex: 0 0 auto;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--c-accent);
  color: #24280c;
  display: grid;
  place-items: center;
  font-size: 0.72rem;
  margin-top: 0.1rem;
}

/* ==========================================================================
   作品展示
   ========================================================================== */
.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: clamp(1.1rem, 2.4vw, 1.7rem);
}
.work-card {
  position: relative;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--r);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .35s, box-shadow .35s;
}
.work-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lift); }
.work-top {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-bottom: 1px solid var(--c-line);
}
.work-top img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s ease; }
.work-card:hover .work-top img { transform: scale(1.04); }
.work-body { padding: 1.1rem 1.2rem 1.2rem; flex: 1; display: flex; flex-direction: column; }
.work-title {
  font-family: var(--font-title);
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin: 0 0 0.4rem;
}
.work-author {
  font-size: 0.8rem;
  color: var(--c-ink-soft);
  letter-spacing: 0.1em;
  margin-bottom: 0.7rem;
}
.work-author b { color: var(--c-secondary); font-weight: 600; }
.work-quote {
  margin-top: auto;
  padding-top: 0.8rem;
  border-top: 1px dashed var(--c-line);
  color: var(--c-ink-soft);
  font-size: 0.9rem;
}
.work-quote::before { content: "「"; color: var(--c-primary); }
.work-quote::after { content: "」"; color: var(--c-primary); }

/* 分享表单 */
.share-panel {
  border: 1px solid var(--c-line);
  border-radius: var(--r);
  background: var(--c-surface);
  padding: clamp(1.4rem, 3vw, 2rem);
  box-shadow: var(--shadow-soft);
  max-width: 680px;
}
.share-panel h3 {
  font-family: var(--font-title);
  font-size: 1.25rem;
  letter-spacing: 0.08em;
  margin: 0 0 0.3rem;
}
.share-panel .sub { color: var(--c-ink-soft); font-size: 0.9rem; margin-bottom: 1.3rem; }
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}
.form-field label {
  display: block;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  color: var(--c-ink-soft);
  margin-bottom: 0.35rem;
}
.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  border: 1px solid var(--c-line);
  border-radius: var(--r);
  background: #fff;
  padding: 0.6rem 0.8rem;
  font-family: inherit;
  font-size: 0.94rem;
  color: var(--c-ink);
  transition: border-color .25s, box-shadow .25s;
}
.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(167, 150, 57, 0.14);
}
.form-field textarea { resize: vertical; min-height: 90px; }
.form-field.full { grid-column: 1 / -1; }
.form-actions { margin-top: 1.2rem; display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.form-hint { font-size: 0.8rem; color: var(--c-ink-soft); }

/* ==========================================================================
   Toast
   ========================================================================== */
.toast {
  position: fixed;
  left: 50%; bottom: 1.6rem;
  transform: translate(-50%, 20px);
  background: var(--c-ink);
  color: #fff;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  padding: 0.7rem 1.3rem;
  border-radius: var(--r);
  border-left: 3px solid var(--c-accent);
  opacity: 0;
  pointer-events: none;
  z-index: 60;
  transition: opacity .35s, transform .35s;
  box-shadow: 0 8px 24px rgba(44,42,27,.25);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ==========================================================================
   回到顶部
   ========================================================================== */
.back-top {
  position: fixed;
  right: 1.4rem; bottom: 1.4rem;
  z-index: 30;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid var(--c-line-gold);
  background: var(--c-surface);
  color: var(--c-primary);
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-soft);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity .3s, transform .3s;
}
.back-top.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-top:hover { border-color: var(--c-primary); background: var(--c-primary); color: #fff; }

/* ==========================================================================
   加载 / 空状态
   ========================================================================== */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  padding: 3rem 0;
  color: var(--c-ink-soft);
  letter-spacing: 0.2em;
  font-size: 0.9rem;
}
.loading .ring {
  width: 34px; height: 34px;
  border: 2px solid var(--c-line);
  border-top-color: var(--c-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.empty {
  text-align: center;
  padding: 3.4rem 1rem;
  color: var(--c-ink-soft);
  border: 1px dashed var(--c-line);
  border-radius: var(--r);
}
.empty .empty-mark {
  font-family: var(--font-title);
  color: var(--c-primary);
  font-size: 1.6rem;
  margin-bottom: 0.6rem;
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  margin-top: 3rem;
  border-top: 1px solid var(--c-line);
  background: linear-gradient(180deg, transparent, rgba(167, 150, 57, 0.05));
  padding: 2.2rem 0 2.6rem;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-quote {
  font-family: var(--font-title);
  color: var(--c-ink-soft);
  letter-spacing: 0.12em;
  font-size: 0.95rem;
}
.footer-quote b { color: var(--c-primary); font-weight: 600; }
.footer-meta { font-size: 0.82rem; color: var(--c-ink-soft); letter-spacing: 0.08em; text-align: right; }
.footer-meta a { color: var(--c-secondary); }
.footer-meta a:hover { text-decoration: underline; }
.footer-seal-line {
  margin-top: 1.6rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.footer-seal-line .hairline { flex: 1; }

/* ==========================================================================
   滚动显现
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s cubic-bezier(.22,1,.36,1), transform .7s cubic-bezier(.22,1,.36,1);
}
.reveal.in { opacity: 1; transform: none; }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; gap: 1.6rem; }
  .tutorial-hero { grid-template-columns: 1fr; }
  .panel-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .brand-name { font-size: 1.05rem; }
}
@media (max-width: 560px) {
  .nav { flex-wrap: wrap; padding-top: 0.7rem; padding-bottom: 0.7rem; }
  .nav-links { width: 100%; justify-content: center; order: 3; border-top: 1px dashed var(--c-line); padding-top: 0.4rem; margin-top: 0.2rem; }
  .nav-links a { font-size: 0.88rem; padding: 0.35rem 0.75rem; }
  .grid, .works-grid { grid-template-columns: 1fr; }
  .hero-verse { display: none; }
  .section { padding: 2rem 0; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}