/* ============================================================
   theme.css — 语聚AI 页面换肤（内容/布局不变，仅样式替换）
   风格来源：tuopu-forest 项目默认主题 cream-mint（Neo-brutalism）
   设计要点：奶油底 #F5F2F0 + 纯白卡 + 2px 墨黑硬边 + 零模糊偏移阴影
   品牌三色：薄荷绿 #4ECB71 / 桃 #FFBE98 / 紫罗兰 #B09CFB
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800;900&display=swap');

:root {
  /* 品牌色 */
  --brand-mint: #4ECB71;
  --brand-mint-hover: #7AD98F;
  --brand-mint-active: #3DB55E;
  --brand-mint-text: #2E9B4E;
  --brand-peach: #FFBE98;
  --brand-peach-light: #FFD4B8;
  --brand-peach-text: #E8945E;
  --brand-violet: #B09CFB;
  --brand-violet-hover: #C1B3FF;
  --brand-violet-active: #9C86EA;
  --brand-red: #FF6B6B;
  /* 中性色 */
  --ink: #151617;
  --surface-dark: #121314;
  --bg-page: #F5F2F0;
  --bg-card: #FFFFFF;
  --bg-subtle: #FAF8F6;
  --bg-muted: #F0EDE8;
  --text-primary: #151617;
  --text-secondary: rgba(21, 22, 23, 0.8);
  --text-tertiary: rgba(21, 22, 23, 0.6);
  --text-gray: #6E7178;
  --border-strong: #151617;
  --border-subtle: #E3DDD5;
  /* 硬阴影（零模糊） */
  --shadow-sm: 2px 2px 0 0 #151617;
  --shadow-md: 3px 3px 0 0 #151617;
  --shadow-lg: 4px 4px 0 0 #151617;
  --shadow-xl: 6px 6px 0 0 #151617;
  --shadow-accent: 6px 6px 0 0 #B09CFB;
  /* 圆角 */
  --radius-badge: 10px;
  --radius-btn: 12px;
  --radius-card: 16px;
  /* 渐变 */
  --gradient-brand: linear-gradient(135deg, #4ECB71, #FFBE98);
  --gradient-hero: linear-gradient(135deg, #4ECB71 0%, #86DF9F 50%, #E4B9A0 100%);
  --gradient-text: linear-gradient(135deg, #2E9B4E, #E8945E);
  /* 字体 */
  --font-body: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

/* ---------------- 基础 ---------------- */
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg-page);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { max-width: 100%; }
::selection { background: var(--brand-mint); color: var(--ink); }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-muted); }
::-webkit-scrollbar-thumb { background: var(--ink); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #303236; }
:focus-visible { outline: 2px solid var(--brand-violet); outline-offset: 2px; }

/* ---------------- 模板工具类（保持原布局间距语义） ---------------- */
.rts-section-gap { padding: 96px 0; }
.rts-section-gapTop { padding-top: 96px; }
.rts-section-gapBottom { padding-bottom: 96px; }
.mt--25 { margin-top: 25px; }
.mt--50 { margin-top: 50px; }
.mt--60 { margin-top: 60px; }
.mr--30 { margin-right: 30px; }
.pb--100 { padding-bottom: 100px; }
.pb_sm--30 { padding-bottom: 30px; }

/* ---------------- 按钮（贴纸按压三件套） ---------------- */
.rts-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #FFFFFF;
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 900;
  font-size: 15px;
  line-height: 1.2;
  padding: 14px 28px;
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-btn);
  box-shadow: var(--shadow-md);
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}
.rts-btn:hover {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 0 #151617;
  color: var(--ink);
  text-decoration: none;
}
.rts-btn:active {
  transform: translate(3px, 3px);
  box-shadow: none;
}
.rts-btn.btn-primary { background: var(--brand-peach); }
.rts-btn.btn-primary:hover { background: var(--brand-peach); color: var(--ink); }
.rts-btn.btn-blur { background: #FFFFFF; }
.rts-btn.btn-lonly { background: var(--brand-mint); }
.rts-btn.btn-lonly:hover { background: var(--brand-mint); color: var(--ink); }

/* ---------------- 头部导航 ---------------- */
.header-one.header--sticky {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--border-strong);
}
.header-main-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding: 14px 0;
  position: relative;
}
.logo img { height: 56px; width: auto; }
.nav-area-main nav ul {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-area-main nav li a.links-main {
  display: inline-block;
  font-weight: 800;
  font-size: 15px;
  color: var(--ink);
  text-decoration: none;
  padding: 10px 14px;
  border-radius: 10px;
  border: 2px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}
.nav-area-main nav li a.links-main:hover {
  background: rgba(78, 203, 113, 0.15);
  border-color: var(--border-strong);
}
/* 头部按钮组 */
.header-main-wrapper .button-area {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-main-wrapper .button-area .rts-btn { padding: 10px 22px; font-size: 14px; }
/* 汉堡按钮 */
.menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: #FFFFFF;
  border: 2px solid var(--border-strong);
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.menu-btn:hover { transform: translate(2px, 2px); box-shadow: none; }

/* ---------------- 下拉 / Mega 菜单 ---------------- */
.nav-area-main nav li.has-dropdown { position: relative; }
.rts-mega-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: min(960px, 92vw);
  background: #FFFFFF;
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-xl);
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  z-index: 60;
}
.has-dropdown:hover > .rts-mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
ul.mega-menu-item { list-style: none; margin: 0; padding: 0; }
ul.mega-menu-item li + li { margin-top: 4px; }
ul.mega-menu-item li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border-radius: 10px;
  text-decoration: none;
  transition: background-color 0.15s ease;
}
ul.mega-menu-item li a:hover { background: rgba(78, 203, 113, 0.12); }
ul.mega-menu-item li a img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 2px solid var(--border-subtle);
  background: #fff;
  flex: 0 0 36px;
}
ul.mega-menu-item li a .info p {
  margin: 0 0 2px;
  font-weight: 800;
  font-size: 14px;
  color: var(--ink);
}
ul.mega-menu-item li a .info span {
  font-size: 12px;
  color: var(--text-gray);
}
/* 普通下拉（更多产品） */
ul.submenu {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  min-width: 220px;
  background: #FFFFFF;
  border: 2px solid var(--border-strong);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  padding: 8px;
  margin: 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  z-index: 60;
}
.has-dropdown:hover > ul.submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
ul.submenu li a {
  display: block;
  padding: 10px 14px;
  font-weight: 700;
  font-size: 14px;
  color: var(--ink);
  text-decoration: none;
  border-radius: 8px;
}
ul.submenu li a:hover { background: rgba(255, 190, 152, 0.3); }

/* ---------------- Banner（Hero 渐变） ---------------- */
.rts-banner-area-one {
  position: relative;
  overflow: hidden;
  background: var(--gradient-hero);
  border-bottom: 2px solid var(--border-strong);
}
.rts-banner-area-one::before,
.rts-banner-area-one::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.28);
  pointer-events: none;
}
.rts-banner-area-one::before { width: 420px; height: 420px; top: -160px; right: -120px; }
.rts-banner-area-one::after { width: 300px; height: 300px; bottom: -120px; left: -100px; }
.rts-banner-area-one .container { position: relative; z-index: 1; }
.rts-banner-area-one.rts-section-gap { padding: 100px 0 70px; }
/* 品牌口号贴纸（hero 徽章规范：2px 黑边 + 硬阴影 + 900 字重 + 宽字距） */
.hero-slogan {
  display: inline-block;
  background: var(--brand-mint);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-badge);
  box-shadow: var(--shadow-sm);
  padding: 8px 18px;
  font-weight: 900;
  font-size: 15px;
  letter-spacing: 0.15em;
  color: var(--ink);
  margin-bottom: 22px;
}
.content-main-wrapper {
  text-align: center;
  max-width: 880px;
  margin: 0 auto;
}
.content-main-wrapper h1.title {
  margin: 0 0 20px;
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.txt-rotate {
  display: inline-block;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.content-main-wrapper p.disc {
  margin: 0 auto 32px;
  max-width: 740px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-secondary);
}
.content-main-wrapper .button-area {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 18px;
}
.content-main-wrapper .user-area p {
  margin: 0;
  font-weight: 800;
  font-size: 14px;
  color: var(--text-tertiary);
}
/* 产品主图 */
.bottom-mid-img {
  max-width: 920px;
  margin: 48px auto 0;
  padding: 0 12px;
}
.bottom-mid-img img {
  display: block;
  width: 100%;
  background: #fff;
  border: 2px solid var(--border-strong);
  border-radius: 20px;
  box-shadow: 8px 8px 0 0 rgba(21, 22, 23, 0.9);
}
/* 浮动渠道贴纸 */
.usefull-for-ani {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  padding: 40px 12px 20px;
}
.usefull-for-ani .single {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #FFFFFF;
  border: 2px solid var(--border-strong);
  border-radius: 999px;
  padding: 8px 18px;
  box-shadow: var(--shadow-md);
  font-weight: 800;
  font-size: 14px;
  color: var(--ink);
  animation: wjzni-bob 4s ease-in-out infinite;
}
.usefull-for-ani .single img { width: 20px; height: 20px; }
.usefull-for-ani .single:nth-child(2) { animation-delay: 0.4s; }
.usefull-for-ani .single.blog { animation-delay: 0.8s; }
.usefull-for-ani .single.copy { animation-delay: 1.2s; background: var(--brand-violet); }
.usefull-for-ani .single.freelancer { animation-delay: 1.6s; background: var(--brand-peach); }
@keyframes wjzni-bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ---------------- 品牌墙 ---------------- */
.rts-brand-area { background: var(--bg-page); }
.brand-title {
  margin: 0;
  font-weight: 900;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-tertiary);
}
.brand-area-main-wrapper-one {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 40px;
}
.brand-area-main-wrapper-one img {
  height: 44px;
  width: auto;
  opacity: 0.75;
  filter: grayscale(0.4);
  transition: opacity 0.2s ease, filter 0.2s ease, transform 0.2s ease;
}
.brand-area-main-wrapper-one img:hover {
  opacity: 1;
  filter: none;
  transform: translateY(-2px);
}

/* ---------------- 通用标题区 ---------------- */
.title-conter-area {
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}
.title-conter-area .title {
  margin: 0 0 16px;
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.title-conter-area .disc {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
}

/* ---------------- 三步流程（Feature 大卡） ---------------- */
.rts-feature-area { background: var(--bg-page); }
.single-feature-area-start {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 48px;
  background: #FFFFFF;
  border: 2px solid var(--border-strong);
  border-radius: 24px;
  box-shadow: 8px 8px 0 0 #151617;
  padding: 48px;
  margin-top: 32px;
  transition: transform 0.2s ease;
}
.single-feature-area-start:hover { transform: translateY(-3px); }
.single-feature-area-start .image-area { flex: 1 1 400px; }
.single-feature-area-start .image-area img {
  width: 100%;
  background: #fff;
  border: 2px solid var(--border-strong);
  border-radius: 16px;
}
.single-feature-area-start .featue-content-area { flex: 1 1 400px; }
.featue-content-area .pre {
  display: inline-block;
  background: var(--brand-mint);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-badge);
  box-shadow: var(--shadow-sm);
  padding: 6px 14px;
  font-weight: 900;
  font-size: 14px;
  color: var(--ink);
  margin-bottom: 18px;
}
.featue-content-area .title {
  margin: 0 0 12px;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 900;
  color: var(--ink);
}
.featue-content-area .disc {
  margin: 0 0 24px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-secondary);
}
/* 原浅红/浅蓝底 → 桃/紫罗兰浅底（保持交替配色语义） */
.single-feature-area-start.bg-red-l { background: #FFF4EC; }
.single-feature-area-start.bg-red-l .pre { background: var(--brand-peach); }
.single-feature-area-start.bg-blue-l { background: #F4F0FE; }
.single-feature-area-start.bg-blue-l .pre { background: var(--brand-violet); }

/* ---------------- 应用场景卡片（Tools） ---------------- */
.rts-tools-area.bg-tools { background: var(--bg-muted); }
.single-tools-feature {
  height: 100%;
  background: #FFFFFF;
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-xl);
  padding: 28px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.single-tools-feature:hover { transform: translateY(-4px); }
.single-tools-feature .icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-subtle);
  border: 2px solid var(--border-strong);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}
.single-tools-feature .icon svg { width: 46px; height: 46px; }
.single-tools-feature h5.title {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 900;
  color: var(--ink);
}
.single-tools-feature p.disc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(21, 22, 23, 0.75);
}

/* ---------------- FAQ 手风琴 ---------------- */
.rts-faq-area.bg_faq,
.rts-cta-area.bg_faq { background: rgba(78, 203, 113, 0.08); }
.accordion-area-one { max-width: 820px; margin: 0 auto; }
.accordion { --bs-accordion-bg: #FFFFFF; }
.accordion-item {
  background: #FFFFFF;
  border: 2px solid var(--border-strong);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-bottom: 18px;
  transition: box-shadow 0.2s ease;
}
.accordion-item:has(.accordion-collapse.show) { box-shadow: var(--shadow-accent); }
.accordion-button {
  background: #FFFFFF;
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 900;
  font-size: 16px;
  line-height: 1.5;
  padding: 20px 24px;
  border: 0;
  box-shadow: none;
}
.accordion-button:not(.collapsed) {
  background: var(--bg-subtle);
  color: var(--ink);
  box-shadow: none;
}
.accordion-button::after,
.accordion-button:not(.collapsed)::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23151617'%3E%3Cpath d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
}
.accordion-button:focus { box-shadow: none; outline: none; border-color: transparent; }
.accordion-body {
  background: #FFFFFF;
  border-top: 2px dashed var(--border-subtle);
  padding: 18px 24px 22px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(21, 22, 23, 0.75);
}

/* ---------------- CTA ---------------- */
.cta-main-wrapper {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  background: var(--gradient-brand);
  border: 2px solid var(--border-strong);
  border-radius: 24px;
  box-shadow: 8px 8px 0 0 #151617;
  padding: 48px 56px;
}
.cta-main-wrapper .left .title {
  margin: 0 0 24px;
  font-size: clamp(26px, 3.5vw, 40px);
  font-weight: 900;
  color: var(--ink);
}
.cta-main-wrapper .right img { width: 180px; height: auto; }

/* ---------------- 页脚（墨黑底） ---------------- */
.rts-footer-area.bg-footer {
  background: var(--ink);
  color: #F5F2F0;
}
.footer-one-main-wrapper {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 64px;
}
.footer-singl-wized .head { margin-bottom: 20px; }
.footer-singl-wized .head img { height: 56px; width: auto; }
.footer-singl-wized .head h6.title {
  margin: 0;
  font-size: 16px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #F5F2F0;
}
.footer-singl-wized .body .footer-slogan {
  margin: 0 0 12px;
  font-weight: 900;
  font-size: 15px;
  letter-spacing: 0.12em;
  color: var(--brand-mint);
}
.footer-singl-wized .body p.dsic {
  margin: 0;
  max-width: 400px;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(245, 242, 240, 0.7);
}
.footer-singl-wized .body ul.menu { list-style: none; margin: 0; padding: 0; }
.footer-singl-wized .body ul.menu li { margin-bottom: 12px; }
.footer-singl-wized .body ul.menu li a {
  font-size: 14px;
  font-weight: 600;
  color: rgba(245, 242, 240, 0.75);
  text-decoration: none;
  transition: color 0.15s ease;
}
.footer-singl-wized .body ul.menu li a:hover { color: var(--brand-mint); }
.copy-right-start-two {
  border-top: 1px solid rgba(245, 242, 240, 0.15);
  padding: 24px 0;
}
.copy-right-start-two p {
  margin: 0;
  text-align: center;
  font-size: 13px;
  color: rgba(245, 242, 240, 0.5);
}
.copy-right-start-two p a { color: var(--brand-mint); text-decoration: none; }

/* ---------------- 移动端 ---------------- */
@media (max-width: 991.98px) {
  .header-main-wrapper { padding: 12px 0; }
  .nav-area-main {
    position: absolute;
    top: 100%;
    left: -12px;
    right: -12px;
    display: none;
    background: #FFFFFF;
    border-bottom: 2px solid var(--border-strong);
    box-shadow: 6px 6px 0 rgba(21, 22, 23, 0.12);
    padding: 16px 28px 20px;
    max-height: 70vh;
    overflow-y: auto;
    z-index: 80;
  }
  .nav-area-main.open { display: block !important; }
  .nav-area-main nav ul { flex-direction: column; align-items: stretch; gap: 4px; }
  .nav-area-main nav li a.links-main { display: block; }
  .rts-mega-menu,
  ul.submenu { display: none; }
  .header-main-wrapper .button-area .rts-btn.btn-lonly { margin-right: 0; }
}
@media (max-width: 767.98px) {
  .rts-section-gap,
  .rts-banner-area-one.rts-section-gap { padding: 64px 0 48px; }
  .rts-section-gapTop { padding-top: 64px; }
  .rts-section-gapBottom { padding-bottom: 64px; }
  .pb--100 { padding-bottom: 56px; }
  .single-feature-area-start { padding: 28px 22px; gap: 28px; border-radius: 18px; }
  .single-feature-area-start .image-area,
  .single-feature-area-start .featue-content-area { flex: 1 1 100%; }
  .single-tools-feature { padding: 22px; }
  .cta-main-wrapper { padding: 32px 24px; }
  .cta-main-wrapper .right img { width: 140px; }
  .footer-one-main-wrapper { gap: 40px; }
  .brand-area-main-wrapper-one { gap: 24px; }
  .brand-area-main-wrapper-one img { height: 34px; }
  .usefull-for-ani .single { padding: 6px 14px; font-size: 13px; }
  .accordion-button { font-size: 15px; padding: 16px 18px; }
  .accordion-body { padding: 14px 18px 18px; }
  /* g-5 栅格沟槽在窄屏收缩，避免行负边距撑出横向滚动 */
  .row.g-5 { --bs-gutter-x: 1.5rem; }
}