/* ==========================================================================
   MaaNikke 官网样式 —— 粉蓝插画 · 精修杂志感
   设计令牌 → 基础排版 → 组件 → 区块 → 动效 → 响应式
   ========================================================================== */

/* ---------- 设计令牌 ---------- */
:root {
  /* 品牌色（取自 hero.jpg 的樱粉 × 天蓝） */
  --pink-50: #fdf3f7;
  --pink-100: #fbe7ef;
  --pink-200: #f4c7d9;
  --pink-500: #d65c8a;
  --pink-600: #bc4977;
  --blue-100: #e5eef8;
  --blue-200: #c8dbf0;
  --blue-600: #3f6fa6;
  --blue-700: #335a86;

  /* 中性与功能色 */
  --ink-900: #2e2833;
  --ink-700: #453e4e;
  --ink-600: #575061;
  --ink-400: #8b8296;
  --paper: #fffdfc;
  --paper-2: #faf5f7;
  --line: #f0e5ea;
  --line-strong: #e3d3dd;
  --amber-100: #fbf2de;
  --amber-200: #f2dfb4;
  --amber-700: #8a641c;
  --red-100: #f9e9e7;
  --red-600: #c25555;
  --green-100: #e6f2ea;
  --green-700: #3f7a5c;

  /* 字体 */
  --font-display: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "JetBrains Mono", Consolas,
    "Courier New", monospace;

  /* 间距与形状 */
  --container: 1120px;
  --radius-card: 18px;
  --radius-inner: 12px;
  --radius-pill: 999px;

  /* 阴影（粉灰双层，柔和） */
  --shadow-sm: 0 1px 2px rgba(46, 40, 51, 0.05), 0 2px 8px rgba(46, 40, 51, 0.05);
  --shadow-md: 0 2px 6px rgba(46, 40, 51, 0.05),
    0 12px 32px -8px rgba(150, 80, 110, 0.18);
  --shadow-lg: 0 24px 64px -16px rgba(150, 80, 110, 0.28);

  /* 动效 */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 0.28s;

  /* 导航 */
  --nav-h: 68px;
  --strip-h: 42px;
}

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

/* 网格 / 弹性子项的最小内容宽度不得撑破容器（长代码块、表格等） */
.audience-grid > *,
.settings-grid > *,
.qs-steps > *,
.features-grid > *,
.plan-a-grid > *,
.req-grid > *,
.plan-b-head > *,
.planb-step > *,
.footer-grid > * {
  min-width: 0;
}

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--ink-700);
  background: var(--paper);
  text-wrap: pretty;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--blue-600);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
a:hover {
  color: var(--pink-600);
}

code,
pre {
  font-family: var(--font-mono);
}

code {
  font-size: 0.86em;
  background: var(--pink-50);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.1em 0.42em;
  color: var(--pink-600);
  word-break: break-all;
}

pre code {
  background: none;
  border: 0;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

::selection {
  background: var(--pink-200);
  color: var(--ink-900);
}

:focus-visible {
  outline: 2px solid var(--pink-500);
  outline-offset: 2px;
  border-radius: 4px;
}

section[id],
footer[id] {
  scroll-margin-top: calc(var(--nav-h) + 12px);
}

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 48px);
}

/* ---------- 通用组件 ---------- */

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius-pill);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.3;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
  white-space: nowrap;
}
.btn:active {
  transform: translateY(1px) scale(0.98);
}
.btn-primary {
  background: linear-gradient(135deg, var(--pink-500), var(--pink-600));
  color: #fff;
  box-shadow: 0 6px 20px -6px rgba(214, 92, 138, 0.55);
}
.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -8px rgba(214, 92, 138, 0.6);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.7);
  border-color: var(--line-strong);
  color: var(--ink-700);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover {
  border-color: var(--pink-500);
  color: var(--pink-600);
  transform: translateY(-2px);
}
.btn-sm {
  padding: 9px 18px;
  font-size: 14px;
}
.btn .arr {
  transition: transform var(--dur) var(--ease);
}
.btn:hover .arr {
  transform: translateX(3px);
}

/* 芯片 / 徽章 */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  font-size: 13.5px;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line-strong);
  color: var(--ink-600);
  backdrop-filter: blur(4px);
}

.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.6;
  vertical-align: 2px;
}
.badge-beta {
  background: var(--blue-100);
  color: var(--blue-700);
}
.badge-warn {
  background: var(--amber-100);
  color: var(--amber-700);
}
.badge-gui {
  background: var(--pink-100);
  color: var(--pink-600);
}
.badge-script {
  background: var(--blue-100);
  color: var(--blue-700);
}
.badge-config {
  background: var(--green-100);
  color: var(--green-700);
}
.badge-cache {
  background: #f0edf3;
  color: var(--ink-600);
}
.badge-dir {
  background: #f0edf3;
  color: var(--ink-600);
}

/* 区块头 */
.section {
  padding-block: clamp(76px, 10vw, 124px);
}
.section-alt {
  background: var(--paper-2);
  border-block: 1px solid var(--line);
}

.section-head {
  max-width: 720px;
  margin-bottom: clamp(40px, 6vw, 64px);
}
.section-head.center {
  margin-inline: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--pink-600);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: currentColor;
  align-self: center;
  border-radius: 2px;
}
.section-head.center .eyebrow::after {
  content: "";
  width: 26px;
  height: 2px;
  background: currentColor;
  align-self: center;
  border-radius: 2px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.6vw, 2.7rem);
  font-weight: 900;
  line-height: 1.25;
  color: var(--ink-900);
  margin: 0 0 14px;
  letter-spacing: 0.01em;
}

.section-desc {
  font-size: 17px;
  color: var(--ink-600);
  margin: 0;
}

/* 荧光笔标记（编辑感强调） */
.marker {
  background: linear-gradient(transparent 60%, rgba(214, 92, 138, 0.3) 60%);
  padding: 0 2px;
  white-space: nowrap;
}

/* 代码块 */
.codeblock {
  background: #2b2531;
  color: #e8dfe6;
  border-radius: var(--radius-inner);
  padding: 20px 22px;
  font-size: 13.5px;
  line-height: 1.8;
  overflow-x: auto;
  box-shadow: var(--shadow-md);
}
.codeblock .c {
  color: #9d8fa8;
}
.codeblock .k {
  color: #f0a8c6;
}

/* 截图卡片 */
.shot {
  border-radius: var(--radius-inner);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  background: #fff;
}
.shot img {
  width: 100%;
  height: auto;
  transition: transform 0.5s var(--ease);
}
.shot:hover img {
  transform: scale(1.02);
}

/* 插画卡（带说明） */
.art-card {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.6);
}
.art-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.art-card figcaption {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  color: #fff;
  background: rgba(46, 40, 51, 0.45);
  backdrop-filter: blur(6px);
}

/* 提示框 */
.callout {
  display: flex;
  gap: 14px;
  padding: 18px 22px;
  border-radius: var(--radius-inner);
  border: 1px solid;
  font-size: 15px;
  line-height: 1.7;
}
.callout .ico {
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 2px;
}
.callout-amber {
  background: var(--amber-100);
  border-color: var(--amber-200);
  color: var(--amber-700);
}
.callout-red {
  background: var(--red-100);
  border-color: #eecac6;
  color: var(--red-600);
}
.callout-blue {
  background: var(--blue-100);
  border-color: var(--blue-200);
  color: var(--blue-700);
}
.callout p {
  margin: 0;
}
.callout p + p {
  margin-top: 6px;
}

/* ---------- 导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(255, 253, 252, 0.72);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  transition: background 0.35s var(--ease), box-shadow 0.35s var(--ease),
    border-color 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(255, 253, 252, 0.82);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom-color: var(--line);
  box-shadow: 0 4px 24px -12px rgba(150, 80, 110, 0.25);
}
.nav-inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 11px;
  border: 0;
  color: var(--ink-900);
}
.nav-logo img {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  box-shadow: var(--shadow-sm);
}
.nav-logo .name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  letter-spacing: 0.02em;
}
.nav-logo .tag {
  font-size: 11.5px;
  color: var(--ink-400);
  letter-spacing: 0.08em;
  margin-top: 1px;
}
.nav-links {
  display: flex;
  gap: 4px;
  margin-left: auto;
}
.nav-links a {
  padding: 7px 13px;
  border-radius: var(--radius-pill);
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-600);
  border: 0;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav-links a:hover {
  color: var(--pink-600);
  background: var(--pink-50);
}
.nav-links a.active {
  color: var(--pink-600);
  background: var(--pink-100);
}
.nav-cta {
  flex: none;
}
.nav-toggle {
  display: none;
  flex: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  padding: 0;
  position: relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 11px;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink-700);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.nav-toggle span {
  top: 20px;
}
.nav-toggle span::before {
  left: 0;
  top: -6px;
}
.nav-toggle span::after {
  left: 0;
  top: 6px;
}
.nav-toggle.open span {
  background: transparent;
}
.nav-toggle.open span::before {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle.open span::after {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  z-index: 99;
  background: rgba(255, 253, 252, 0.96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
  padding: 12px clamp(20px, 5vw, 48px) 24px;
  display: none;
  flex-direction: column;
  gap: 2px;
  box-shadow: var(--shadow-lg);
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu a {
  padding: 13px 14px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink-700);
  border: 0;
}
.mobile-menu a:hover,
.mobile-menu a.active {
  background: var(--pink-50);
  color: var(--pink-600);
}
.mobile-menu .btn {
  margin-top: 12px;
  justify-content: center;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: calc(100svh - var(--nav-h) - var(--strip-h));
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  display: flex;
}
.hero-half {
  position: relative;
  width: 50%;
  height: 100%;
  overflow: hidden;
}
/* 右半幅向左叠 130px 并用 mask 渐变融入左半幅，消除中缝 */
.hero-half-r {
  width: calc(50% + 130px);
  margin-left: -130px;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 130px);
  mask-image: linear-gradient(to right, transparent, #000 130px);
}
.hero-half img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.04);
  animation: heroDrift 22s var(--ease) infinite alternate;
}
.hero-half-l img {
  object-position: 0% 42%;
}
.hero-half-r img {
  object-position: 38% 42%;
  animation-name: heroDriftR;
}
@keyframes heroDrift {
  from {
    transform: scale(1.04) translateY(0);
  }
  to {
    transform: scale(1.09) translateY(-14px);
  }
}
@keyframes heroDriftR {
  from {
    transform: scaleX(-1) scale(1.04) translateY(0);
  }
  to {
    transform: scaleX(-1) scale(1.09) translateY(-14px);
  }
}
/* 窄屏下把人物脸部进一步推向两侧，避免被中央面板遮住 */
@media (max-width: 1440px) {
  .hero-half-l img {
    object-position: 10% 42%;
  }
  .hero-half-r img {
    object-position: 25% 42%;
  }
}
@media (max-width: 1100px) {
  .hero-half-l img {
    object-position: 30% 42%;
  }
  .hero-half-r img {
    object-position: 25% 42%;
  }
  .hero-content {
    max-width: 600px;
  }
}
.hero-veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    var(--paper) 0%,
    rgba(255, 253, 252, 0) 18%
  ),
  rgba(255, 253, 252, 0.38);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  margin-block: 48px;
  padding: clamp(28px, 4vw, 52px);
  background: rgba(255, 253, 252, 0.58);
  backdrop-filter: blur(16px) saturate(1.25);
  -webkit-backdrop-filter: blur(16px) saturate(1.25);
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 28px;
  box-shadow: var(--shadow-lg);
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 15px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(6px);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--pink-600);
  letter-spacing: 0.04em;
  margin-bottom: 26px;
  box-shadow: var(--shadow-sm);
}
.hero-eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--pink-500);
  box-shadow: 0 0 0 4px rgba(214, 92, 138, 0.18);
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6.2vw, 4.4rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: 0.01em;
  color: var(--ink-900);
  margin: 0 0 22px;
}
.hero-title .accent {
  color: var(--pink-600);
}
.hero-sub {
  font-size: clamp(16px, 1.6vw, 18.5px);
  line-height: 1.85;
  color: var(--ink-600);
  margin: 0 0 36px;
  max-width: 540px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 34px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}
.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ink-400);
  writing-mode: horizontal-tb;
}
.scroll-hint::after {
  content: "";
  width: 1px;
  height: 44px;
  background: linear-gradient(var(--pink-500), transparent);
  animation: hintDrop 1.8s var(--ease) infinite;
}
@keyframes hintDrop {
  0% {
    transform: scaleY(0);
    transform-origin: top;
    opacity: 0;
  }
  35% {
    transform: scaleY(1);
    opacity: 1;
  }
  100% {
    transform: scaleY(1) translateY(10px);
    opacity: 0;
  }
}

/* ---------- 声明条（置顶） ---------- */
.notice-strip {
  background: var(--amber-100);
  border-bottom: 1px solid var(--amber-200);
  color: var(--amber-700);
  font-size: 13.5px;
  line-height: 1.65;
}
.notice-strip .container {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-block: 9px;
}
.notice-strip .ico {
  flex: none;
  width: 18px;
  height: 18px;
}
.notice-strip p {
  margin: 0;
}
.notice-strip a {
  color: var(--amber-700);
  font-weight: 600;
  border-bottom-color: rgba(138, 100, 28, 0.4);
  white-space: nowrap;
}
.notice-strip a:hover {
  border-bottom-color: currentColor;
}

/* ---------- 使用前必读 ---------- */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 56px;
}
.audience-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 26px 26px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.audience-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.audience-card .num {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--pink-500);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}
.audience-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink-900);
  margin: 0 0 8px;
}
.audience-card p {
  margin: 0;
  font-size: 14.5px;
  color: var(--ink-600);
}

.req-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 64px;
}
.req-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-md);
  padding: clamp(24px, 3vw, 36px);
}
.req-card h3 {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 900;
  color: var(--ink-900);
  margin: 0 0 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.req-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.req-list li {
  display: flex;
  gap: 12px;
  padding: 13px 0;
  border-top: 1px dashed var(--line-strong);
  font-size: 15px;
  line-height: 1.7;
}
.req-list li:first-child {
  border-top: 0;
  padding-top: 0;
}
.req-list .ico {
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  color: var(--pink-500);
}
.req-list b {
  color: var(--ink-900);
}
.req-visual {
  align-self: stretch;
  min-height: 320px;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.setting-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  display: flex;
  flex-direction: column;
}
.setting-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.setting-card .shot {
  border: 0;
  border-radius: 0;
  box-shadow: none;
  border-bottom: 1px solid var(--line);
}
.setting-card .body {
  padding: 20px 22px 22px;
  flex: 1;
}
.setting-card .step-tag {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--pink-500);
  margin-bottom: 6px;
}
.setting-card h4 {
  margin: 0 0 6px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink-900);
}
.setting-card h4 .must {
  color: var(--red-600);
}
.setting-card p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-600);
}
.setting-card.text-only {
  justify-content: center;
  background: var(--pink-50);
  border-style: dashed;
  border-color: var(--pink-200);
}
.setting-card.text-only .body {
  padding: 24px;
}

/* ---------- 快速上手 ---------- */
.qs-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  counter-reset: qs;
}
.qs-step {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 30px 26px 26px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  display: flex;
  flex-direction: column;
}
.qs-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.qs-step .qs-num {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 900;
  line-height: 1;
  color: var(--pink-200);
  margin-bottom: 14px;
}
.qs-step h3 {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 700;
  color: var(--ink-900);
}
.qs-step p {
  margin: 0 0 12px;
  font-size: 14.5px;
  color: var(--ink-600);
}
.qs-step p:last-child {
  margin-bottom: 0;
}
.qs-step .codeblock {
  margin-top: 14px;
  font-size: 12.5px;
  padding: 16px 18px;
}
.qs-links {
  margin-top: auto;
  padding-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.link-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--blue-600);
  background: var(--blue-100);
  border-radius: var(--radius-pill);
  padding: 5px 13px;
  border: 0;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}
.link-pill:hover {
  background: var(--pink-100);
  color: var(--pink-600);
  transform: translateY(-1px);
}

/* ---------- 使用方案 ---------- */
.plan-intro {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 40px;
}
.tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
}
.tab {
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--ink-600);
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-body);
  padding: 13px 30px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--dur) var(--ease);
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
.tab .tab-tag {
  font-size: 11.5px;
  font-weight: 700;
  padding: 2px 9px;
  border-radius: var(--radius-pill);
  background: var(--pink-100);
  color: var(--pink-600);
}
.tab:hover {
  border-color: var(--pink-500);
  color: var(--pink-600);
  transform: translateY(-1px);
}
.tab.active {
  background: linear-gradient(135deg, var(--pink-500), var(--pink-600));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 22px -8px rgba(214, 92, 138, 0.6);
}
.tab.active .tab-tag {
  background: rgba(255, 255, 255, 0.22);
  color: #fff;
}
.tab-panel {
  display: none;
}
.tab-panel.active {
  display: block;
  animation: panelIn 0.45s var(--ease);
}
@keyframes panelIn {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* 方案 A */
.plan-a-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}
.plan-a-step {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 24px 22px;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.plan-a-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.plan-a-step .n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--pink-100);
  color: var(--pink-600);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16px;
  margin-bottom: 14px;
}
.plan-a-step h4 {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--ink-900);
}
.plan-a-step p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-600);
}

/* 方案 B 布局 */
.plan-b-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 56px;
}
.flowchain {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-md);
  padding: clamp(22px, 3vw, 32px);
}
.flowchain h3 {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
  color: var(--ink-900);
  margin: 0 0 20px;
}
.flow-node {
  position: relative;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-inner);
  padding: 13px 16px;
  background: var(--paper);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.flow-node:hover {
  border-color: var(--pink-500);
  transform: translateX(4px);
}
.flow-node .fn-file {
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: 700;
  color: var(--pink-600);
}
.flow-node .fn-desc {
  font-size: 13px;
  color: var(--ink-600);
  margin-top: 2px;
}
.flow-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 0 7px 18px;
  color: var(--ink-400);
  font-size: 12.5px;
}
.flow-link::before {
  content: "";
  width: 2px;
  height: 18px;
  border-radius: 2px;
  background: linear-gradient(var(--pink-200), var(--pink-500));
  flex: none;
}
.plan-b-side {
  align-self: stretch;
  min-height: 280px;
}
.plan-b-side img {
  object-position: 18% 50%;
}

/* 方案 B 步骤 */
.planb-steps {
  display: flex;
  flex-direction: column;
  gap: 22px;
  margin-bottom: 40px;
}
.planb-step {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: clamp(22px, 3vw, 30px);
  box-shadow: var(--shadow-sm);
}
.planb-step .n {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--pink-100), var(--blue-100));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 21px;
  color: var(--pink-600);
}
.planb-step h4 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--ink-900);
}
.planb-step p {
  margin: 0 0 10px;
  font-size: 15px;
}
.planb-step p:last-of-type {
  margin-bottom: 0;
}
.planb-step .shot {
  margin-top: 16px;
  max-width: 560px;
}
.planb-step .shots-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 16px;
}
.planb-step .shots-row figure {
  margin: 0;
}
.planb-step .shots-row figcaption {
  font-size: 12.5px;
  color: var(--ink-400);
  text-align: center;
  padding-top: 8px;
}
.mini-steps {
  list-style: none;
  counter-reset: mini;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mini-steps li {
  counter-increment: mini;
  display: flex;
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.65;
}
.mini-steps li::before {
  content: counter(mini);
  flex: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--pink-100);
  color: var(--pink-600);
  font-size: 12.5px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

/* 脚本详解（折叠） */
.script-details {
  margin-bottom: 40px;
}
.script-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.script-card + .script-card {
  margin-top: 14px;
}
.script-card summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  transition: background var(--dur) var(--ease);
}
.script-card summary::-webkit-details-marker {
  display: none;
}
.script-card summary:hover {
  background: var(--pink-50);
}
.script-card summary .fn {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-900);
}
.script-card summary .role {
  font-size: 13.5px;
  color: var(--ink-400);
  margin-left: auto;
  text-align: right;
}
.script-card summary .chev {
  flex: none;
  width: 18px;
  height: 18px;
  color: var(--pink-500);
  transition: transform var(--dur) var(--ease);
}
.script-card[open] summary .chev {
  transform: rotate(180deg);
}
.script-card .script-body {
  padding: 4px 24px 24px;
  border-top: 1px dashed var(--line-strong);
  font-size: 14.5px;
}
.script-body ol,
.script-body ul {
  margin: 12px 0;
  padding-left: 22px;
}
.script-body li {
  margin-bottom: 6px;
  line-height: 1.7;
}
.script-body .codeblock {
  margin-top: 12px;
}

/* 参数表 / 通用表 */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: #fff;
  box-shadow: var(--shadow-sm);
}
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  min-width: 560px;
}
table.data th {
  text-align: left;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink-900);
  background: var(--pink-50);
  padding: 13px 18px;
  border-bottom: 1px solid var(--line-strong);
  white-space: nowrap;
}
table.data td {
  padding: 13px 18px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  line-height: 1.65;
  color: var(--ink-600);
}
table.data tr:last-child td {
  border-bottom: 0;
}
table.data tr:hover td {
  background: rgba(253, 243, 247, 0.6);
}
table.data td code {
  white-space: nowrap;
}

/* 最终效果 */
.final-callout {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  padding: clamp(36px, 5vw, 56px);
  background: linear-gradient(120deg, #3a2f42, #6b3d55 55%, #a2506f);
  color: #fff;
  box-shadow: var(--shadow-lg);
  text-align: center;
}
.final-callout::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
      600px 300px at 20% 0%,
      rgba(244, 199, 217, 0.25),
      transparent
    ),
    radial-gradient(500px 260px at 90% 100%, rgba(63, 111, 166, 0.3), transparent);
}
.final-callout h3 {
  position: relative;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 900;
  margin: 0 0 12px;
}
.final-callout p {
  position: relative;
  margin: 0;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
}

/* ---------- 程序组成 ---------- */
.files-note {
  margin-top: 20px;
}

/* ---------- 功能一览 ---------- */
.features-banner {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  margin-bottom: 44px;
  box-shadow: var(--shadow-lg);
}
.features-banner img {
  width: 100%;
  height: clamp(180px, 26vw, 300px);
  object-fit: cover;
  object-position: 50% 74%;
}
.features-banner .veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(46, 40, 51, 0.72),
    rgba(46, 40, 51, 0.25) 60%,
    transparent
  );
  display: flex;
  align-items: center;
}
.features-banner .veil p {
  margin: 0;
  padding: 0 clamp(24px, 4vw, 44px);
  color: #fff;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.4vw, 1.7rem);
  font-weight: 700;
  line-height: 1.5;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
  max-width: 560px;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 30px;
  align-items: center;
}
.filter-chip {
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--ink-600);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--dur) var(--ease);
}
.filter-chip:hover {
  border-color: var(--pink-500);
  color: var(--pink-600);
}
.filter-chip.active {
  background: var(--ink-900);
  border-color: var(--ink-900);
  color: #fff;
}
.filter-count {
  margin-left: auto;
  font-size: 13.5px;
  color: var(--ink-400);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 22px 22px 20px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    opacity 0.35s var(--ease);
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.feature-card.hidden {
  display: none;
}
.feature-card .fc-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.feature-card h3 {
  margin: 0;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink-900);
}
.feature-card .fc-cat {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--pink-500);
  background: var(--pink-50);
  border-radius: var(--radius-pill);
  padding: 2px 9px;
  margin-left: auto;
  white-space: nowrap;
}
.feature-card .fc-desc {
  margin: 0;
  font-size: 14px;
  color: var(--ink-600);
}
.feature-card .fc-opts {
  margin: 12px 0 0;
  padding: 10px 14px;
  border-top: 1px dashed var(--line-strong);
  background: var(--paper-2);
  border-radius: 0 0 var(--radius-inner) var(--radius-inner);
  font-size: 13px;
  color: var(--ink-600);
  line-height: 1.65;
}
.feature-card .fc-opts b {
  color: var(--pink-600);
  font-weight: 600;
}
.feature-card .fc-note {
  margin: 10px 0 0;
  font-size: 12.5px;
  color: var(--amber-700);
  display: flex;
  gap: 6px;
  line-height: 1.6;
}
.feature-card .fc-note::before {
  content: "!";
  flex: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--amber-100);
  font-size: 11px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

/* ---------- 常见问题 ---------- */
.faq-list {
  max-width: 820px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}
.faq-item.open {
  border-color: var(--pink-200);
  box-shadow: var(--shadow-md);
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 19px 24px;
  background: none;
  border: 0;
  font-family: var(--font-body);
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink-900);
  text-align: left;
  cursor: pointer;
  line-height: 1.5;
}
.faq-q .qmark {
  flex: none;
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--pink-500);
  font-size: 17px;
}
.faq-q .chev {
  flex: none;
  margin-left: auto;
  width: 18px;
  height: 18px;
  color: var(--ink-400);
  transition: transform var(--dur) var(--ease);
}
.faq-item.open .faq-q .chev {
  transform: rotate(180deg);
  color: var(--pink-500);
}
.faq-a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.38s var(--ease);
}
.faq-item.open .faq-a {
  grid-template-rows: 1fr;
}
.faq-a-inner {
  overflow: hidden;
}
.faq-a-inner > div {
  padding: 0 24px 22px 55px;
  font-size: 14.5px;
  color: var(--ink-600);
  line-height: 1.8;
}
.faq-a-inner p {
  margin: 0 0 8px;
}
.faq-a-inner p:last-child {
  margin-bottom: 0;
}

/* ---------- 更新日志 ---------- */
.timeline {
  max-width: 820px;
  margin-inline: auto;
  position: relative;
  padding-left: 28px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(var(--pink-500), var(--blue-200));
  border-radius: 2px;
}
.tl-item {
  position: relative;
  padding-bottom: 34px;
}
.tl-item:last-child {
  padding-bottom: 0;
}
.tl-item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 7px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--pink-500);
  box-shadow: 0 0 0 4px var(--pink-50);
}
.tl-item .tl-tag {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--pink-600);
  background: var(--pink-100);
  border-radius: var(--radius-pill);
  padding: 3px 12px;
  margin-bottom: 8px;
}
.tl-item h3 {
  margin: 0 0 6px;
  font-size: 17.5px;
  color: var(--ink-900);
}
.tl-item p {
  margin: 0;
  font-size: 14.5px;
  color: var(--ink-600);
}
.changelog-more {
  text-align: center;
  margin-top: 36px;
  font-size: 14.5px;
  color: var(--ink-400);
}

/* ---------- 页脚 ---------- */
.footer {
  position: relative;
  color: #fff;
  overflow: hidden;
}
.footer-bg {
  position: absolute;
  inset: 0;
}
.footer-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 30%;
}
.footer-veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    var(--paper) 0%,
    rgba(43, 32, 46, 0.72) 18%,
    rgba(43, 32, 46, 0.82) 100%
  );
}
.footer-inner {
  position: relative;
  z-index: 2;
  padding-block: clamp(80px, 10vw, 120px) 40px;
}
.footer-cta {
  text-align: center;
  max-width: 640px;
  margin: 0 auto clamp(48px, 7vw, 80px);
}
.footer-cta h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 900;
  line-height: 1.3;
  margin: 0 0 14px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}
.footer-cta h2 .accent {
  color: var(--pink-200);
}
.footer-cta p {
  margin: 0 0 28px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 16px;
}
.footer-cta .btn-ghost {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}
.footer-cta .btn-ghost:hover {
  border-color: #fff;
  color: #fff;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 36px;
  padding-block: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}
.footer h4 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--pink-200);
  margin: 0 0 14px;
}
.footer-disclaimer {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.68);
}
.footer-disclaimer li {
  margin-bottom: 6px;
  padding-left: 14px;
  position: relative;
}
.footer-disclaimer li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--pink-200);
  opacity: 0.7;
}
.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
  font-size: 14px;
}
.footer-links a {
  color: rgba(255, 255, 255, 0.85);
  border: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-links a:hover {
  color: var(--pink-200);
  transform: translateX(3px);
}
.footer-links a {
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.55);
}
.footer-bottom .ai-note {
  max-width: 460px;
  line-height: 1.7;
}

/* ---------- 入场动效 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  transition-delay: var(--reveal-delay, 0s);
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .plan-a-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .req-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .req-visual {
    display: none;
  }
  .plan-b-head {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .plan-b-side {
    display: none;
  }
}

@media (max-width: 860px) {
  .nav-links,
  .nav-cta {
    display: none;
  }
  .nav-toggle {
    display: block;
    margin-left: auto;
  }
  .audience-grid,
  .settings-grid,
  .qs-steps {
    grid-template-columns: 1fr;
  }
  .planb-step {
    grid-template-columns: 1fr;
  }
  .planb-step .n {
    width: 44px;
    height: 44px;
    font-size: 18px;
  }
  .planb-step .shots-row {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .scroll-hint {
    display: none;
  }
  .hero-half-l {
    display: none;
  }
  .hero-half-r {
    width: 100%;
    margin-left: 0;
    -webkit-mask-image: none;
    mask-image: none;
  }
  .hero-half-r img {
    object-position: 44% 42%;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 15.5px;
  }
  .features-grid,
  .plan-a-grid {
    grid-template-columns: 1fr;
  }
  .tabs {
    flex-direction: column;
    align-items: stretch;
  }
  .tab {
    justify-content: center;
  }
  .filter-count {
    width: 100%;
    margin-left: 0;
  }
  .faq-a-inner > div {
    padding-left: 24px;
  }
  .hero-actions .btn {
    flex: 1;
    justify-content: center;
  }
  .notice-strip .container {
    align-items: flex-start;
  }
}

/* ---------- 减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
  .hero-bg img {
    animation: none;
  }
}