/* ============================================
   唤心萌动 · 通用组件层（暗色）
   头部 / 按钮 / 页面Hero / 卡片 / 页脚 / CTA / 杂志式详情骨架
   ============================================ */

/* ================= 头部导航 ================= */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 100;
  display: flex;
  align-items: center;
  background: transparent;
  transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

.site-header.solid {
  background: rgba(6, 8, 26, 0.78);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--line);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
}

/* 全内容 logo（横版组合图，蓝色透明底适配暗色主题） */
.brand .brand-logo {
  display: block;
  height: 52px;
  width: auto;
  transition: transform 0.35s var(--ease-out), opacity 0.3s;
}

.brand:hover .brand-logo {
  transform: translateY(-1px);
  opacity: 0.92;
}

@media (max-width: 480px) {
  .brand .brand-logo {
    height: 42px;
  }
}

/* 主导航 */
.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.6vw, 2.2rem);
}

.main-nav a {
  position: relative;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-2);
  padding: 0.35rem 0;
  transition: color 0.25s;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-warm);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease-out);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  transform: scaleX(1);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--ink);
}

.header-cta {
  flex: none;
}

/* 汉堡 */
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  z-index: 120;
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: all 0.3s var(--ease-out);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 移动端抽屉 */
@media (max-width: 860px) {
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    position: fixed;
    inset: 0;
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    background: rgba(6, 8, 26, 0.96);
    backdrop-filter: blur(16px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
  }
  .main-nav a {
    color: var(--ink) !important;
    font-size: 1.25rem;
  }
  .main-nav.open {
    opacity: 1;
    pointer-events: auto;
  }
  .header-cta {
    display: none;
  }
}

/* ================= 按钮 ================= */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.55rem 1.35rem;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition:
    transform 0.3s var(--ease-out),
    box-shadow 0.3s var(--ease-out),
    background 0.3s,
    color 0.3s,
    border-color 0.3s;
  cursor: pointer;
  white-space: nowrap;
  isolation: isolate;
  overflow: hidden;
  text-decoration: none;
}

.btn:active {
  transform: scale(0.97);
}

.btn .arr {
  transition: transform 0.3s var(--ease-out);
}

.btn:hover .arr {
  transform: translateX(4px);
}

/* 按钮装饰（sheen）已弃用：保留选择器避免老引用报错 */
.btn-sheen::before {
  content: none;
}

.btn-sheen::after {
  content: none;
}

/* ---------- 主按钮（品牌蓝纯色 · 利落扁平） ---------- */
.btn-warm,
.btn-primary {
  color: #fff;
  background: #6d72ff;
  box-shadow: 0 4px 18px -6px rgba(109, 114, 255, 0.55);
}

.btn-warm:hover,
.btn-primary:hover {
  transform: translateY(-1px);
  background: #7d82ff;
  box-shadow: 0 8px 24px -8px rgba(109, 114, 255, 0.7);
}

/* ---------- 次按钮（玻璃 · 收敛） ---------- */
.btn-light {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(160, 170, 255, 0.2);
}

.btn-light:hover {
  background: rgba(129, 136, 255, 0.14);
  border-color: rgba(160, 170, 255, 0.4);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px -10px rgba(109, 114, 255, 0.5);
}

/* ---------- 幽灵按钮 ---------- */
.btn-ghost {
  border: 1.5px solid var(--line-strong);
  color: var(--ink-2);
}

.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
  box-shadow: 0 8px 22px -12px rgba(109, 114, 255, 0.5);
}

.btn-sm {
  padding: 0.42rem 1rem;
  font-size: 0.84rem;
}

/* ================= 子页 Hero ================= */
.page-hero {
  position: relative;
  background: var(--bg);
  color: var(--ink);
  overflow: hidden;
  padding: clamp(3.5rem, 8vw, 6.5rem) 0 clamp(3rem, 6vw, 5rem);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(55% 80% at 10% 0%, rgba(109, 114, 255, 0.16), transparent 60%),
    radial-gradient(45% 70% at 90% 100%, rgba(255, 138, 92, 0.09), transparent 60%),
    radial-gradient(40% 60% at 78% 8%, rgba(167, 139, 250, 0.12), transparent 62%);
  pointer-events: none;
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(75% 85% at 50% 20%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(75% 85% at 50% 20%, #000 30%, transparent 100%);
  opacity: 0.5;
  pointer-events: none;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.crumbs {
  display: flex;
  align-items: center;
  gap: 0.55em;
  font-size: 0.85rem;
  color: var(--ink-3);
  margin-bottom: 1.6rem;
}

.crumbs a:hover {
  color: var(--ink);
}

.crumbs .sep {
  opacity: 0.45;
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  letter-spacing: 0.01em;
}

.page-hero .lead {
  margin-top: 1.1rem;
  max-width: 62ch;
  color: var(--ink-2);
  font-size: clamp(1rem, 1.6vw, 1.12rem);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.6rem;
}

/* ================= 标签 chip ================= */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.32rem 0.95rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 500;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--ink-2);
}

.chip.warm {
  background: rgba(255, 138, 92, 0.1);
  border-color: rgba(255, 138, 92, 0.32);
  color: #ffb08a;
}

/* ================= 页脚 ================= */
.site-footer {
  position: relative;
  background: var(--bg);
  color: var(--ink-2);
  overflow: hidden;
  border-top: 1px solid var(--line);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(45% 60% at 90% 0%, rgba(109, 114, 255, 0.1), transparent 60%),
    radial-gradient(40% 55% at 4% 100%, rgba(255, 138, 92, 0.06), transparent 60%);
  pointer-events: none;
}

.footer-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: clamp(2rem, 4vw, 3.5rem);
  padding: clamp(3rem, 6vw, 4.5rem) 0 2.6rem;
}

/* 品牌列：整列居中，logo / 标签 / 社媒同一中轴对称 */
.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.footer-brand p {
  margin-top: 1rem;
  font-size: 0.92rem;
  max-width: 30ch;
}

/* 品牌下方标签组（无框标签，两行排布：3 + 2，居中对称） */
.footer-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem 1.1rem;
  margin-top: 1.2rem;
  margin-bottom: 1.6rem; /* 与下方社媒拉开距离 */
}

.footer-tags span {
  position: relative;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--ink-2);
  padding-left: 0.85rem;
  transition: color 0.3s;
}

/* 前置小方点替代胶囊边框 */
.footer-tags span::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 5px;
  height: 5px;
  border-radius: 1.5px;
  transform: translateY(-50%) rotate(45deg);
  background: linear-gradient(135deg, #8188ff, #a78bfa);
  opacity: 0.75;
}

.footer-tags span:hover {
  color: var(--accent);
}

.footer-col h4 {
  color: var(--ink);
  font-size: 0.95rem;
  margin-bottom: 1.1rem;
  letter-spacing: 0.06em;
}

.footer-col li + li {
  margin-top: 0.55rem;
}

.footer-col a {
  font-size: 0.9rem;
  transition: color 0.25s, padding-left 0.25s;
}

.footer-col a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-contact li {
  display: flex;
  gap: 0.6em;
  font-size: 0.9rem;
}

.footer-contact .q {
  color: var(--ink);
  flex: none;
}

.footer-social {
  display: flex;
  flex-wrap: wrap;
  /* 3 + 2 两行，居中对齐与上方标签同轴 */
  gap: 0.5rem;
  margin-top: 0;
  max-width: 285px;
  justify-content: center;
}

.footer-social a {
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  font-size: 0.8rem;
  border: 1px solid var(--line);
  transition: all 0.3s;
}

.footer-social a:hover {
  border-color: rgba(255, 138, 92, 0.5);
  color: var(--accent);
  transform: translateY(-2px);
}

.footer-bottom {
  position: relative;
  border-top: 1px solid var(--line);
  padding: 1.4rem 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem;
  font-size: 0.8rem;
  color: var(--ink-3);
}

@media (max-width: 860px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 540px) {
  .footer-inner {
    grid-template-columns: 1fr;
  }
}

/* ================= 通用卡片 ================= */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  transition:
    transform 0.4s var(--ease-out),
    box-shadow 0.4s var(--ease-out),
    border-color 0.4s,
    background 0.4s;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-m);
  border-color: var(--line-strong);
  background: var(--surface-2);
}

/* ================= CTA 横幅 ================= */
.cta-banner {
  position: relative;
  border-radius: var(--radius-xl);
  padding: clamp(2.6rem, 6vw, 4.2rem);
  background:
    radial-gradient(90% 130% at 10% 0%, rgba(255, 138, 92, 0.18), transparent 55%),
    radial-gradient(90% 130% at 95% 100%, rgba(167, 139, 250, 0.22), transparent 55%),
    linear-gradient(135deg, #131742, #0a0d26);
  border: 1px solid var(--line);
  color: #fff;
  overflow: hidden;
  text-align: center;
}

.cta-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(70% 100% at 50% 50%, #000 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(70% 100% at 50% 50%, #000 20%, transparent 100%);
  opacity: 0.6;
  pointer-events: none;
}

.cta-banner > * {
  position: relative;
  z-index: 1;
}

.cta-banner h2 {
  font-size: clamp(1.6rem, 3.6vw, 2.5rem);
}

.cta-banner p {
  margin: 0.9rem auto 1.8rem;
  color: var(--ink-2);
  max-width: 46ch;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  justify-content: center;
}

/* ================= Toast ================= */
.toast {
  position: fixed;
  left: 50%;
  bottom: 40px;
  transform: translate(-50%, 20px);
  background: rgba(16, 20, 47, 0.95);
  border: 1px solid var(--line-strong);
  color: #fff;
  padding: 0.8rem 1.5rem;
  border-radius: 999px;
  font-size: 0.9rem;
  box-shadow: var(--shadow-l);
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s var(--ease-out);
  z-index: 200;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ================= 上下篇导航 ================= */
.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: clamp(2.5rem, 5vw, 4rem);
}

.pager a {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1.3rem 1.6rem;
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
  background: var(--surface);
  transition: all 0.35s var(--ease-out);
}

.pager a.next {
  text-align: right;
  align-items: flex-end;
}

.pager a:hover {
  border-color: rgba(255, 138, 92, 0.45);
  box-shadow: var(--shadow-m);
  transform: translateY(-3px);
}

.pager .dir {
  font-size: 0.78rem;
  color: var(--ink-3);
  letter-spacing: 0.12em;
}

.pager .name {
  font-weight: 600;
  color: var(--ink);
}

@media (max-width: 640px) {
  .pager {
    grid-template-columns: 1fr;
  }
}

/* ================= 杂志式详情骨架（案例/产品共用） ================= */
.detail-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

/* 案例页：去侧栏，单栏居中（整洁简约） */
.detail-layout.detail-solo {
  grid-template-columns: minmax(0, 860px);
  justify-content: center;
}

/* 侧栏 */
.detail-aside {
  position: sticky;
  top: calc(var(--header-h) + 1.5rem);
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.da-title {
  font-size: 1.45rem;
  line-height: 1.4;
}

.da-title .en {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 600;
}

.da-block {
  padding: 1.2rem 1.3rem;
  border-radius: var(--radius-m);
  background: var(--surface);
  border: 1px solid var(--line);
}

.da-block h4 {
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--ink-3);
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}

.da-meta {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.da-meta div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.88rem;
}

.da-meta dt {
  color: var(--ink-3);
  flex: none;
}

.da-meta dd {
  color: var(--ink);
  font-weight: 500;
  text-align: right;
}

.da-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.da-cta .btn {
  width: 100%;
}

/* 正文流 */
.detail-main {
  min-width: 0;
}

.detail-head h1 {
  font-size: clamp(1.8rem, 4.5vw, 2.8rem);
}

.detail-head .lead {
  margin-top: 1rem;
  color: var(--ink-2);
  font-size: 1.05rem;
  line-height: 2;
  max-width: 62ch;
}

.detail-cover {
  margin-top: 2rem;
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-l);
}

.detail-cover .img-box {
  aspect-ratio: 21 / 10;
  border-radius: inherit;
}

@media (max-width: 700px) {
  .detail-cover .img-box {
    aspect-ratio: 16 / 10;
  }
}

@media (max-width: 880px) {
  .detail-layout {
    grid-template-columns: 1fr;
  }
  .detail-layout.detail-solo {
    grid-template-columns: minmax(0, 1fr);
  }
  .detail-aside {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }
  .detail-aside .da-block {
    flex: 1 1 240px;
  }
}