/* ============================================================
   CYG艺术档案 · 宣传页
   风格：Editorial Monochrome（延续小程序设计规范）
   纯白 · 墨黑 · 细线分隔 · 直角矩形 · 留白即层级
   ============================================================ */

:root {
  /* Colors */
  --bg: #ffffff;
  --ink: #111111;
  --muted: #767676;
  --text: #555555;
  --line: #e8e8e6;
  --wash: #F2F2F0;
  --serif: YigeSerif, "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --serifDisplay: CygOldSong, YigeSerifSemi, "Noto Serif SC", "Songti SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(17,17,17,0.04);
  --shadow-md: 0 4px 20px rgba(17,17,17,0.06);
  --shadow-lg: 0 12px 40px rgba(17,17,17,0.08);

  /* Spacing */
  --space-xs: 8px; --space-sm: 16px; --space-md: 32px;
  --space-lg: 64px; --space-xl: 96px; --space-2xl: 128px;

  /* Easing */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);

  /* Typography scale */
  --fs-hero: clamp(42px, 6vw, 68px);
  --fs-h2: clamp(28px, 4vw, 44px);
  --fs-h3: clamp(20px, 2.5vw, 26px);
  --fs-body: 16px;
  --fs-caption: 13px;
  --fs-kicker: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--fs-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- 通用元素 ---------- */

.kicker {
  font-size: var(--fs-kicker);
  letter-spacing: 0.35em;
  color: var(--muted);
  margin-bottom: var(--space-md);
}

.section-title {
  font-family: var(--serifDisplay);
  font-size: var(--fs-h2);
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.35;
}

.section { padding: var(--space-2xl) 0; }
.section--wash { background: var(--wash); }

.section-head { margin-bottom: var(--space-lg); }

.section-head--row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

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

.btn {
  display: inline-block;
  padding: 14px 34px;
  font-size: 15px;
  letter-spacing: 0.12em;
  border: 1px solid var(--ink);
  transition: opacity 0.25s var(--ease-out), background 0.25s var(--ease-out),
              color 0.25s var(--ease-out), transform 0.25s var(--ease-out),
              box-shadow 0.25s var(--ease-out);
  cursor: pointer;
}

.btn--solid { background: var(--ink); color: #fff; }
.btn--solid:hover {
  opacity: 0.88;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover {
  background: var(--ink);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn--lg { padding: 17px 44px; font-size: 16px; }

/* ---------- 顶部导航 ---------- */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.wordmark { display: inline-flex; align-items: center; gap: 10px; }
.wordmark__mark { height: 34px; width: auto; display: block; }

.wordmark__cn {
  font-family: var(--serifDisplay);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0.18em;
}

.wordmark--lg .wordmark__cn { font-size: 30px; }

.site-nav { display: flex; gap: 44px; }

.site-nav a {
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--muted);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease-out), border-color 0.25s var(--ease-out),
              transform 0.25s var(--ease-out);
}

.site-nav a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
  transform: translateY(-1px);
}

.header-cta {
  padding: 10px 22px;
  font-size: 13px;
}
.header-cta:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 7px;
}

.nav-toggle span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--ink);
  transition: transform 0.3s var(--ease-out);
}

.nav-toggle.is-open span:nth-child(1) { transform: translateY(4.25px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { transform: translateY(-4.25px) rotate(-45deg); }

/* ---------- 首屏 ---------- */

.hero {
  padding: 190px 0 0;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 72px;
  align-items: center;
}

.hero-copy { position: relative; }

.hero-copy::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 8px;
  width: 2px;
  height: 48px;
  background: var(--ink);
}

.hero-title {
  font-family: var(--serifDisplay);
  font-size: var(--fs-hero);
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.3;
  margin-bottom: 28px;
}

.hero-sub {
  color: var(--text);
  font-size: 16.5px;
  max-width: 28em;
  line-height: 1.8;
  margin-bottom: 44px;
}

.hero-actions { display: flex; gap: var(--space-sm); flex-wrap: wrap; }

.hero-art { position: relative; }

.hero-art img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 2px;
  box-shadow: var(--shadow-md);
  background: var(--wash);
  transition: opacity 0.5s var(--ease-out), box-shadow 0.4s var(--ease-out);
}

.hero-art img:hover { box-shadow: var(--shadow-lg); }

.hero-art figcaption {
  margin-top: 12px;
  font-size: 12.5px;
  letter-spacing: 0.15em;
  color: var(--muted);
}

.hero-strip {
  margin-top: var(--space-xl);
  padding: 26px 0;
  border-top: 1px solid var(--line);
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  align-items: center;
}

.hero-strip span {
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 0.28em;
  color: var(--ink);
  position: relative;
}

.hero-strip span:not(:last-child)::after {
  content: '·';
  margin-left: var(--space-md);
  color: var(--line);
}

/* ---------- 理念 ---------- */

.idea-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.idea-item {
  padding: 8px 40px 8px 32px;
  border-left: 1px solid var(--line);
  transition: border-color 0.3s var(--ease-out);
}

.idea-item:first-child {
  border-left: none;
  padding-left: 0;
}

.idea-item:hover { border-left-color: var(--ink); }
.idea-item:first-child:hover { border-left: none; }

.idea-num {
  display: block;
  font-family: var(--serifDisplay);
  font-size: 18px;
  color: var(--muted);
  letter-spacing: 0.2em;
  margin-bottom: 22px;
}

.idea-item h3 {
  font-family: var(--serifDisplay);
  font-size: var(--fs-h3);
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
  position: relative;
  padding-bottom: 0;
}

.idea-item h3::after {
  content: '';
  display: block;
  width: 0;
  height: 1px;
  background: var(--ink);
  margin-top: 12px;
  transition: width 0.4s var(--ease-out);
}

.idea-item:hover h3::after { width: 32px; }

.idea-item p {
  font-size: 15px;
  color: var(--text);
  line-height: 1.8;
}

/* ---------- 功能 ---------- */

.feature-list { border-top: 1px solid var(--line); }

.feature-row {
  display: grid;
  grid-template-columns: 90px 240px 1fr;
  gap: var(--space-md);
  align-items: baseline;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: background 0.3s var(--ease-out);
}

.feature-row::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 0;
  bottom: 0;
  width: 0;
  background: var(--ink);
  transition: width 0.3s var(--ease-out);
}

.feature-row:hover {
  background: rgba(0,0,0,0.015);
}

.feature-row:hover::before { width: 3px; }

.feature-index {
  font-family: var(--serifDisplay);
  font-size: 16px;
  color: var(--muted);
  letter-spacing: 0.15em;
}

.feature-row h3 {
  font-family: var(--serifDisplay);
  font-size: var(--fs-h3);
  font-weight: 600;
  letter-spacing: 0.06em;
  transition: color 0.25s var(--ease-out);
}

.feature-row:hover h3 { color: #000; }

.feature-row p {
  font-size: 15px;
  color: var(--text);
  max-width: 36em;
  line-height: 1.75;
}

/* ---------- 展厅预览 ---------- */

.filter-chips { display: flex; gap: 10px; flex-wrap: wrap; }

.chip {
  background: none;
  border: 1px solid var(--line);
  padding: 8px 20px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.25s var(--ease-out), border-color 0.25s var(--ease-out),
              background 0.25s var(--ease-out), transform 0.25s var(--ease-out);
}

.chip:hover {
  color: var(--ink);
  border-color: var(--ink);
  transform: translateY(-1px);
}

.chip--active {
  color: #fff;
  border-color: var(--ink);
  background: var(--ink);
}

.masonry {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 30px 24px;
}

.art-card {
  margin: 0;
  padding: 0;
}

.art-card__img-wrap {
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--wash);
}

.art-card__img-wrap img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out), opacity 0.4s var(--ease-out);
}

.art-card:hover .art-card__img-wrap img { transform: scale(1.02); }

.art-card figcaption {
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.art-card__title {
  display: block;
  font-family: var(--serifDisplay);
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color 0.25s var(--ease-out);
}

.art-card:hover .art-card__title { color: #000; }

.art-card__meta {
  display: block;
  margin-top: 4px;
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: 0.04em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.art-card.is-hidden { display: none; }

.gallery-loading {
  padding: var(--space-lg) 0;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 0.1em;
}

.gallery-loading::after {
  content: '';
  display: block;
  width: 120px;
  height: 2px;
  margin: 16px auto 0;
  background: var(--line);
  position: relative;
  overflow: hidden;
}

.gallery-loading::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 40px;
  height: 2px;
  background: var(--ink);
  animation: shimmer 1.4s infinite var(--ease-smooth);
}

@keyframes shimmer {
  0% { transform: translateX(-40px); }
  100% { transform: translateX(120px); }
}

.gallery-note {
  margin-top: 48px;
  font-size: 13.5px;
  color: var(--muted);
  letter-spacing: 0.08em;
  line-height: 2;
}

.gallery-note a {
  border-bottom: 1px solid var(--line);
  transition: color 0.25s var(--ease-out), border-color 0.25s var(--ease-out);
}
.gallery-note a:hover { color: var(--ink); border-bottom-color: var(--ink); }

/* ---------- 工作流 ---------- */

.flow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}

.flow-step {
  padding: 34px 28px 8px;
  border-right: 1px solid var(--line);
}
.flow-step:last-child { border-right: 0; }

.flow-num {
  display: block;
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--muted);
  margin-bottom: 16px;
}

.flow-step h3 {
  font-family: var(--serifDisplay);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.flow-step p {
  font-size: 14px;
  color: var(--text);
  line-height: 1.8;
}

/* ---------- 入驻 ---------- */

.join-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 56px;
  margin-bottom: 72px;
  position: relative;
}

.join-step { position: relative; }

.join-step:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -36px;
  top: 0;
  font-size: 20px;
  color: var(--line);
  transition: color 0.3s var(--ease-out);
}

.join-step:hover:not(:last-child)::after { color: var(--ink); }

.join-num {
  display: block;
  font-family: var(--serifDisplay);
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 600;
  line-height: 1;
  margin-bottom: 20px;
  color: var(--ink);
  opacity: 0.12;
}

.join-step h3 {
  font-family: var(--serifDisplay);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  position: relative;
  margin-top: -28px;
}

.join-step p {
  font-size: 14.5px;
  color: var(--text);
  line-height: 1.8;
}

.join-cta {
  border-top: 1px solid var(--line);
  padding-top: 48px;
  text-align: center;
}

.join-tip {
  margin-top: 18px;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

/* ---------- 页脚 ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 72px 0 56px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr auto 1fr;
  gap: var(--space-lg);
  align-items: start;
}

.footer-slogan {
  margin-top: var(--space-sm);
  font-size: 13.5px;
  color: var(--muted);
  letter-spacing: 0.22em;
}

.footer-qr { text-align: center; }

.lp-footer__qrimg {
  width: 104px;
  height: 104px;
  display: block;
  margin: 0 auto 12px;
  border: 1px solid var(--line);
  background: #fff;
}

.footer-qr p {
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.9;
  letter-spacing: 0.1em;
}

.footer-meta {
  justify-self: end;
  text-align: right;
  font-size: 13.5px;
  color: var(--muted);
  line-height: 2.2;
  letter-spacing: 0.08em;
}

.footer-meta a {
  border-bottom: 1px solid var(--line);
  transition: color 0.25s var(--ease-out), border-color 0.25s var(--ease-out),
              transform 0.25s var(--ease-out);
  display: inline-block;
}
.footer-meta a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
  transform: translateY(-1px);
}

.footer-copy {
  margin-top: 14px;
  font-size: 12px;
  letter-spacing: 0.05em;
}

/* ---------- 滚动显现动画 ---------- */

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

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

.reveal--delay { transition-delay: 0.12s; }
.reveal--delay-2 { transition-delay: 0.24s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
  .gallery-loading::before { animation: none; }
}

/* ---------- 图片加载 fade-in ---------- */

.img-fade {
  opacity: 0;
  transition: opacity 0.5s var(--ease-out);
}
.img-fade.is-loaded { opacity: 1; }

/* ---------- 图片加载失败兜底 ---------- */

.img-failed {
  min-height: 240px;
  background: var(--wash) !important;
  position: relative;
  overflow: hidden;
}
.img-failed::after {
  content: attr(data-alt);
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--serif);
  font-size: 15px;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-align: center;
  max-width: 80%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- 响应式 ---------- */

@media (max-width: 1200px) {
  .container { max-width: 960px; }
  .hero-inner { gap: 48px; }
  .idea-grid { gap: 0; }
  .idea-item { padding: 8px 24px; }
}

@media (max-width: 960px) {
  .container { padding: 0 22px; }
  .section { padding: 72px 0; }

  .hero { padding-top: 140px; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-copy::before { display: none; }
  .hero-strip { margin-top: 64px; gap: var(--space-sm); }
  .hero-strip span { font-size: 13.5px; letter-spacing: 0.18em; }

  .idea-grid { grid-template-columns: 1fr; gap: 40px; }
  .idea-item { border-left: none; padding: 0; border-top: 1px solid var(--line); padding-top: 28px; }
  .idea-item:first-child { border-top: none; padding-top: 0; }
  .idea-item:hover { border-left: none; border-top-color: var(--ink); }

  .feature-row { grid-template-columns: 56px 1fr; gap: 12px 20px; }
  .feature-row p { grid-column: 2; }
  .feature-row::before { left: 0; }

  .masonry { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px 20px; }

  .flow-steps { grid-template-columns: 1fr 1fr; }
  .flow-step { padding: 28px 22px 8px; }
  .flow-step:nth-child(2n) { border-right: 0; }
  .flow-step:nth-child(-n+2) { border-bottom: 1px solid var(--line); padding-bottom: 28px; }

  .join-steps { grid-template-columns: 1fr; gap: 40px; margin-bottom: 56px; }
  .join-step:not(:last-child)::after { content: '↓'; right: auto; left: 50%;
    transform: translateX(-50%); top: auto; bottom: -24px; }
  .join-step h3 { margin-top: 0; }

  .footer-inner { grid-template-columns: 1fr; gap: 44px; }
  .footer-meta { justify-self: start; text-align: left; }

  .site-nav {
    position: fixed;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s var(--ease-out), transform 0.25s var(--ease-out);
  }

  .site-nav.is-open {
    transform: none;
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav a {
    padding: 18px 22px;
    border-bottom: 1px solid var(--line);
  }

  .header-cta { display: none; }
  .nav-toggle { display: flex; }
}

@media (max-width: 560px) {
  .masonry { grid-template-columns: minmax(0, 1fr); }
  .art-card__meta { white-space: nowrap; }
  .section-head--row { align-items: flex-start; flex-direction: column; }
  .hero-title { font-size: clamp(34px, 9vw, 48px); }

  .flow-steps { grid-template-columns: 1fr; }
  .flow-step,
  .flow-step:nth-child(-n+2) { border-right: 0; border-bottom: 1px solid var(--line); padding: 26px 0 26px; }
  .flow-step:last-child { border-bottom: 0; }
}

/* ============================================================
   工作台式落地页（lp 命名空间）
   顶部 48px 品牌条 + 左侧 240px 侧栏 + 右侧主区
   ============================================================ */

.lp-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 60;
  height: 48px;
  display: flex; align-items: center; gap: 20px;
  padding: 0 24px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.lp-wordmark { display: inline-flex; align-items: center; gap: 8px; }
.lp-wordmark__mark { height: 26px; width: auto; display: block; }
.lp-wordmark__cn {
  font-family: var(--serifDisplay);
  font-size: 20px; font-weight: 600; letter-spacing: 0.18em;
}


.lp-header__cta {
  margin-left: auto;
  font-size: 12.5px; letter-spacing: 0.12em; color: var(--ink);
  border-bottom: 1px solid var(--ink); padding-bottom: 2px;
  transition: opacity 0.2s var(--ease-out);
}
.lp-header__cta:hover { opacity: 0.6; }

/* 好友邀请提示条（?invite= 时显示） */
.lp-invite {
  display: flex; align-items: center; justify-content: center; flex-wrap: wrap;
  gap: 6px 14px;
  margin: 18px 48px 0;
  padding: 10px 18px;
  border: 1px solid var(--ink);
  font-size: 12.5px; letter-spacing: 0.04em;
}
.lp-invite[hidden] { display: none; }
.lp-invite__tag { font-size: 9.5px; letter-spacing: 0.22em; color: var(--muted); }
.lp-invite__text b { font-weight: 600; }
.lp-invite__cta {
  font-size: 12px; letter-spacing: 0.08em; color: var(--ink);
  border-bottom: 1px solid var(--ink); padding-bottom: 1px;
}
@media (max-width: 900px) {
  .lp-invite { margin: 14px 24px 0; }
}

/* ---------- 侧栏 ---------- */

.lp-sidebar {
  position: fixed; top: 48px; left: 0; bottom: 0; width: 240px;
  display: flex; flex-direction: column;
  background: var(--bg);
  border-right: 1px solid var(--line);
  z-index: 20;
}

.lp-user {
  display: flex; align-items: center; gap: 12px;
  padding: 22px 20px;
  border-bottom: 1px solid var(--line);
}
.lp-seal {
  width: 42px; height: 42px; flex: 0 0 42px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serifDisplay); font-size: 20px;
  color: var(--ink); border: 1px solid var(--ink); border-radius: 3px;
}
.lp-seal-img {
  width: 42px; height: 42px; flex: 0 0 42px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 4px;
  background: var(--bg);
}
.lp-user__meta { display: flex; flex-direction: column; gap: 5px; }
.lp-user__name { font-size: 13.5px; font-weight: 500; letter-spacing: 0.06em; }
.lp-user__sub { font-size: 11px; color: var(--muted); letter-spacing: 0.1em; }

.lp-nav { flex: 1 1 auto; overflow-y: auto; padding: 10px 0 16px; }
.lp-nav::-webkit-scrollbar { width: 0; }

.lp-item {
  display: block;
  padding: 8px 20px;
  font-size: 13px; letter-spacing: 0.04em; color: var(--text);
  border-left: 2px solid transparent;
  transition: color 0.2s var(--ease-out), background 0.2s var(--ease-out),
              border-color 0.2s var(--ease-out);
}
.lp-item:hover { color: var(--ink); background: var(--wash); }
.lp-item.is-active {
  color: var(--ink); border-left-color: var(--ink);
  font-weight: 500; background: var(--wash);
}
.lp-item--muted { font-size: 12.5px; color: var(--muted); }

.lp-divider { height: 1px; background: var(--line); margin: 10px 20px; }

.lp-sidefoot {
  border-top: 1px solid var(--line);
  padding: 16px 20px;
  display: flex; flex-direction: column; gap: 8px;
}
.lp-sidefoot__cta {
  align-self: flex-start;
  font-size: 12px; letter-spacing: 0.08em; color: var(--ink);
  border-bottom: 1px solid var(--ink); padding-bottom: 2px;
  transition: opacity 0.2s var(--ease-out);
}
.lp-sidefoot__cta:hover { opacity: 0.6; }
.lp-sidefoot__hint { font-size: 10px; color: var(--muted); letter-spacing: 0.12em; }
.lp-sidefoot__price {
  align-self: stretch;
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 4px;
  padding: 9px 12px;
  border: 1px solid var(--ink);
  font-size: 11.5px; color: var(--ink); letter-spacing: 0.14em;
  transition: background 0.2s var(--ease-out);
}
.lp-sidefoot__price:hover { background: var(--wash); }
.lp-sidefoot__price-arrow { font-size: 14px; letter-spacing: 0; }

/* ---------- 主区 ---------- */

.lp-main { padding-top: 48px; padding-left: 240px; }
.lp-wrap { max-width: 1000px; margin: 0 auto; padding: 0 48px; }

/* 首屏：主建议卡 + 作品 */
.lp-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  margin-top: 40px;
  border: 1px solid var(--ink);
  background: var(--bg);
}
.lp-hero-card { padding: 48px 44px 40px; display: flex; flex-direction: column; }
.lp-kicker {
  font-size: 11.5px; letter-spacing: 0.3em; color: var(--muted);
  margin-bottom: 26px;
}
.lp-hero__title {
  font-family: var(--serifDisplay);
  font-size: clamp(34px, 3.4vw, 52px);
  font-weight: 600; letter-spacing: 0.05em; line-height: 1.28;
  margin-bottom: 22px;
}
.lp-hero__sub {
  font-size: 15px; color: var(--text); line-height: 1.85;
  max-width: 24em; margin-bottom: 32px;
}
.lp-hero__actions { display: flex; gap: 12px; flex-wrap: wrap; }
.lp-strips {
  margin-top: auto; padding-top: 30px;
  border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 10px 22px;
}
.lp-strips span {
  font-family: var(--serif); font-size: 12.5px;
  letter-spacing: 0.18em; color: var(--muted);
}

.lp-hero-art {
  display: grid; grid-template-rows: minmax(0, 1fr) auto;
  border-left: 1px solid var(--ink);
  background: var(--wash);
}
.lp-hero-art__stage { overflow: hidden; }
.lp-hero-art__link { display: block; height: 100%; }
.lp-hero-art img {
  width: 100%; height: 100%; aspect-ratio: 4 / 5;
  object-fit: cover; background: var(--wash);
  transition: opacity 0.5s var(--ease-out);
}
.lp-hero-art__link:hover img { opacity: 0.94; }
.lp-hero-caption {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 12px 18px;
  border-top: 1px solid var(--line);
  background: var(--bg);
}
.lp-hero-caption__text { min-width: 0; }
.lp-hero-caption__title {
  display: block;
  font-family: var(--serifDisplay); font-size: 14px; font-weight: 600;
  letter-spacing: 0.05em; line-height: 1.4;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.lp-hero-caption__meta {
  display: block; margin-top: 3px;
  font-size: 11.5px; color: var(--muted); letter-spacing: 0.08em;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.lp-hero-caption__ctl { flex: none; display: flex; align-items: center; gap: 10px; }
.lp-hero-art__dots { display: flex; align-items: center; gap: 6px; }
.lp-hero-dot {
  width: 5px; height: 5px; padding: 0;
  border: 0; border-radius: 50%; background: var(--line);
  cursor: pointer; transition: background 0.2s var(--ease-out);
}
.lp-hero-dot.is-on { background: var(--ink); }
.lp-hero-art__btn {
  width: 26px; height: 26px; padding: 0;
  border: 1px solid var(--line); background: #fff;
  color: var(--ink); font-size: 13px; line-height: 1; cursor: pointer;
  transition: border-color 0.2s var(--ease-out);
}
.lp-hero-art__btn:hover { border-color: var(--ink); }

/* ---------- 章节 ---------- */

.lp-sec { padding-top: 76px; scroll-margin-top: 64px; }
.lp-sec__head {
  display: flex; align-items: baseline; gap: 18px;
  padding-bottom: 22px; border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.lp-sec__num {
  font-family: var(--serifDisplay);
  font-size: 13px; letter-spacing: 0.2em; color: var(--muted);
}
.lp-sec__title {
  font-family: var(--serifDisplay);
  font-size: clamp(22px, 2.2vw, 30px);
  font-weight: 600; letter-spacing: 0.08em;
  margin-right: auto;
}
.lp-sec__hint { font-size: 12.5px; color: var(--muted); letter-spacing: 0.1em; }

/* 理念：细线行 */
.lp-row {
  display: grid; grid-template-columns: 56px 1fr; gap: 18px;
  align-items: start;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.25s var(--ease-out);
}
.lp-row:hover { background: rgba(0, 0, 0, 0.015); }
.lp-row__num {
  font-family: var(--serifDisplay);
  font-size: 15px; letter-spacing: 0.18em; color: var(--muted);
}
.lp-row__body h3 {
  font-family: var(--serifDisplay);
  font-size: 19px; font-weight: 600; letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.lp-row__body p { font-size: 14.5px; color: var(--text); line-height: 1.85; max-width: 40em; }

/* 能力清单：列宽压缩，适配工作台窄主区 */
.feature-row { grid-template-columns: 72px 220px 1fr; }

/* 说明文字 */
.lp-note {
  font-size: 13px; color: var(--muted);
  letter-spacing: 0.06em; line-height: 2;
}
.lp-note a {
  border-bottom: 1px solid var(--line);
  transition: color 0.25s var(--ease-out), border-bottom-color 0.25s var(--ease-out);
}
.lp-note a:hover { color: var(--ink); border-bottom-color: var(--ink); }

.lp-cta { border-top: 1px solid var(--line); padding-top: 44px; text-align: center; }
.lp-cta .lp-note { margin-top: 18px; }

/* ---------- 首屏真实数据 ---------- */
.lp-proof {
  display: flex; flex-wrap: wrap; align-items: baseline;
  gap: 10px 22px;
  margin-top: 26px;
}
.lp-proof__label {
  font-size: 11px; letter-spacing: 0.24em; color: var(--muted);
}
.lp-proof__item {
  font-size: 12px; letter-spacing: 0.1em; color: var(--muted);
}
.lp-proof__item b {
  font-family: var(--serifDisplay);
  font-size: 19px; font-weight: 600; letter-spacing: 0.04em;
  color: var(--ink); font-variant-numeric: tabular-nums;
  margin-right: 2px;
}

/* ---------- 入驻艺术家（公开档案页） ---------- */
.lp-artists {
  margin-top: 44px; padding-top: 28px;
  border-top: 1px solid var(--ink);
}
.lp-artists__head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 18px; flex-wrap: wrap;
  margin-bottom: 6px;
}
.lp-artists__title {
  font-family: var(--serifDisplay);
  font-size: 17px; font-weight: 600; letter-spacing: 0.08em;
}
.lp-artists__hint { font-size: 12px; color: var(--muted); letter-spacing: 0.06em; }
.lp-artists__list {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 36px;
}
.lp-artist {
  display: grid; grid-template-columns: 44px minmax(0, 1fr) auto;
  align-items: center; gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s var(--ease-out);
}
.lp-artist:hover { background: rgba(0, 0, 0, 0.015); }
.lp-artist__thumb {
  width: 44px; height: 44px; overflow: hidden;
  border: 1px solid var(--line); background: var(--wash);
}
.lp-artist__thumb img { width: 100%; height: 100%; object-fit: cover; }
.lp-artist__thumb span {
  display: flex; width: 100%; height: 100%;
  align-items: center; justify-content: center;
  font-family: var(--serifDisplay); font-size: 16px; color: var(--muted);
}
.lp-artist__body { min-width: 0; }
.lp-artist__name {
  display: block;
  font-family: var(--serifDisplay);
  font-size: 15px; font-weight: 600; letter-spacing: 0.05em; line-height: 1.5;
}
.lp-artist__meta {
  display: block;
  font-size: 11.5px; color: var(--muted); letter-spacing: 0.08em;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.lp-artist__count {
  font-size: 11.5px; color: var(--muted);
  white-space: nowrap; font-variant-numeric: tabular-nums;
}

/* ---------- 常见问题 ---------- */
.lp-faq { margin-top: 8px; }
.lp-faq__item { border-bottom: 1px solid var(--line); }
.lp-faq__q {
  list-style: none; cursor: pointer;
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; padding: 18px 0;
  font-family: var(--serifDisplay);
  font-size: 16px; font-weight: 600; letter-spacing: 0.05em;
}
.lp-faq__q::-webkit-details-marker { display: none; }
.lp-faq__q::after {
  content: '+';
  font-family: var(--sans); font-size: 16px; color: var(--muted);
  transition: color 0.2s var(--ease-out);
}
.lp-faq__q:hover { color: #000; }
.lp-faq__q:hover::after { color: var(--ink); }
details[open] > .lp-faq__q::after { content: '−'; }
.lp-faq__a {
  padding: 0 0 22px;
  font-size: 14.5px; color: var(--text);
  line-height: 1.85; max-width: 46em;
}
.lp-faq__a a {
  border-bottom: 1px solid var(--line);
  transition: color 0.25s var(--ease-out), border-bottom-color 0.25s var(--ease-out);
}
.lp-faq__a a:hover { color: var(--ink); border-bottom-color: var(--ink); }

/* ---------- 页脚 ---------- */

.lp-footer { margin-top: 84px; border-top: 1px solid var(--line); }
.lp-footer__inner {
  display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 56px; align-items: start;
  padding: 64px 0 48px;
}
.lp-footer__slogan {
  margin-top: 16px;
  font-size: 13.5px; color: var(--muted); letter-spacing: 0.22em;
}
.lp-footer__qr { text-align: center; }
.lp-footer__qr p {
  font-size: 12.5px; color: var(--muted);
  line-height: 1.9; letter-spacing: 0.1em;
}
.lp-footer__meta {
  justify-self: end; text-align: right;
  font-size: 13.5px; color: var(--muted);
  line-height: 2.2; letter-spacing: 0.08em;
}
.lp-footer__meta a {
  display: inline-block;
  border-bottom: 1px solid var(--line);
  transition: color 0.25s var(--ease-out), border-bottom-color 0.25s var(--ease-out);
}
.lp-footer__meta a:hover { color: var(--ink); border-bottom-color: var(--ink); }
.lp-footer__copy { margin-top: 14px; font-size: 12px; letter-spacing: 0.05em; }

/* ---------- 响应式 ---------- */

@media (max-width: 1200px) {
  .lp-sidebar { width: 216px; }
  .lp-main { padding-left: 216px; }
  .lp-wrap { padding: 0 36px; }
}

@media (max-width: 960px) {
  .lp-header__cta { display: none; }
  .lp-sidebar {
    width: 232px;
    transform: translateX(-100%);
    transition: transform 0.28s var(--ease-out);
    z-index: 70;
  }
  .lp-sidebar.is-open { transform: translateX(0); box-shadow: 0 0 40px rgba(17, 17, 17, 0.12); }
  .lp-main { padding-left: 0; }
  .lp-wrap { padding: 0 22px; }
  .lp-hero-grid { grid-template-columns: minmax(0, 1fr); }
  .lp-hero-art { border-left: 0; border-top: 1px solid var(--ink); }
  .lp-hero-art img { aspect-ratio: 4 / 3; height: auto; }
  .lp-artists__list { grid-template-columns: minmax(0, 1fr); column-gap: 0; }
  .lp-sec { padding-top: 56px; }
  .lp-footer__inner { grid-template-columns: 1fr; gap: 40px; }
  .lp-footer__meta { justify-self: start; text-align: left; }
}

@media (max-width: 560px) {
  .lp-hero-card { padding: 32px 24px 28px; }
  .lp-hero__sub { font-size: 14px; }
  .lp-sec__title { margin-right: 0; }
  .lp-row { grid-template-columns: 36px 1fr; gap: 12px; }
  .lp-footer__inner { padding: 48px 0 36px; }
}

/* 移动端菜单按钮靠右 */
.lp-header .nav-toggle { margin-left: auto; }