/* ==========================================================
   OPJOYS 合伙人计划 - 主样式表
   配色参考 opjoys.com_html（粉色 #FF467F 主调）
   ========================================================== */

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

:root {
  /* 颜色系统 */
  --c-primary: #FF467F;
  --c-primary-dark: #E6316A;
  --c-primary-light: #FF6B8E;
  --c-primary-pale: #FFE8EF;
  --c-secondary: #4E2887;
  --c-purple: #3E3346;
  --c-lilac: #B9A7E0;
  --c-mint: #B6E8D6;
  --c-yellow: #FFD66B;
  --c-peach: #FFC4A8;
  --c-sky: #A8D8FF;

  --c-text: #232323;
  --c-text-2: #555555;
  --c-muted: #888888;
  --c-border: #EEEEEE;
  --c-bg: #FFFFFF;
  --c-bg-soft: #FAFAFA;
  --c-bg-cream: #FFF7F4;

  /* 字体 */
  --font-heading: 'Luckiest Guy', 'ZCOOL KuaiLe', Helvetica, system-ui, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;

  /* 布局 */
  --max-w: 1280px;
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 28px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --shadow: 0 8px 28px rgba(255,70,127,0.10);
  --shadow-lg: 0 20px 60px rgba(255,70,127,0.18);
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--c-primary); }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
ul { list-style: none; }
input, select, textarea { font: inherit; color: inherit; }

h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 400; line-height: 1.15; letter-spacing: 0.5px; }
h1 { font-size: clamp(40px, 6vw, 72px); }
h2 { font-size: clamp(32px, 4vw, 52px); }
h3 { font-size: clamp(22px, 2.4vw, 30px); }

.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 32px; }
@media (max-width: 768px) { .container { padding: 0 18px; } }

.text-gradient {
  background: linear-gradient(90deg, var(--c-primary) 0%, var(--c-secondary) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px; border-radius: 999px;
  background: var(--c-primary-pale); color: var(--c-primary-dark);
  font-size: 13px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase;
}
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 28px; border-radius: 999px;
  font-weight: 700; letter-spacing: 0.4px; cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, color 0.2s;
  border: 2px solid transparent;
  font-size: 15px;
}
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-ghost { background: transparent; color: var(--c-text); border-color: var(--c-text); }
.btn-ghost:hover { background: var(--c-text); color: #fff; }
.btn-white { background: #fff; color: var(--c-primary); }
.btn-white:hover { background: var(--c-text); color: #fff; }
.btn-lg { padding: 18px 36px; font-size: 16px; }

/* ==========================================================
   HEADER
   ========================================================== */
.site-header {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--c-border);
  position: sticky; top: 0; z-index: 100;
}
.site-header__inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 32px;
  height: 76px; display: flex; align-items: center; gap: 36px;
}
.site-header__logo {
  font-family: var(--font-heading); font-size: 28px;
  color: var(--c-primary); letter-spacing: 0.5px; white-space: nowrap;
}
.site-header__nav { flex: 1; display: flex; align-items: center; gap: 28px; }
.site-header__nav a {
  font-size: 14px; font-weight: 600; letter-spacing: 0.3px;
  color: var(--c-text); padding: 8px 0; position: relative;
}
.site-header__nav a:hover { color: var(--c-primary); }
.site-header__nav a.active { color: var(--c-primary); }
.site-header__nav a.active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0;
  height: 2px; background: var(--c-primary); border-radius: 2px;
}
.site-header__cta { display: flex; align-items: center; gap: 12px; }
.site-header__menu-toggle {
  display: none; width: 40px; height: 40px;
  align-items: center; justify-content: center;
}
.site-header__menu-toggle span {
  display: block; width: 22px; height: 2px; background: var(--c-text);
  position: relative; transition: 0.3s;
}
.site-header__menu-toggle span::before,
.site-header__menu-toggle span::after {
  content: ''; position: absolute; left: 0; width: 22px; height: 2px;
  background: var(--c-text); transition: 0.3s;
}
.site-header__menu-toggle span::before { top: -7px; }
.site-header__menu-toggle span::after { top: 7px; }
@media (max-width: 980px) {
  .site-header__inner { gap: 16px; padding: 0 18px; height: 64px; }
  .site-header__nav { display: none; }
  .site-header__menu-toggle { display: inline-flex; }
  .site-header__cta .btn-ghost { display: none; }
  .site-header__nav.is-open {
    display: flex; flex-direction: column;
    position: absolute; top: 64px; left: 0; right: 0;
    background: #fff; padding: 24px 18px; gap: 14px;
    border-bottom: 1px solid var(--c-border);
    box-shadow: 0 12px 30px rgba(0,0,0,0.06);
  }
}

/* ==========================================================
   FOOTER
   ========================================================== */
.site-footer { background: #1a1a1a; color: #fff; padding: 64px 0 28px; }
.site-footer a { color: rgba(255,255,255,0.7); }
.site-footer a:hover { color: #fff; }
.site-footer__grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px;
  margin-bottom: 40px;
}
.site-footer__brand-block .logo {
  font-family: var(--font-heading); font-size: 32px; color: var(--c-primary);
  margin-bottom: 12px;
}
.site-footer__brand-block p { color: rgba(255,255,255,0.6); max-width: 320px; }
.site-footer__col h4 {
  font-family: var(--font-body); font-weight: 700; font-size: 14px;
  color: #fff; margin-bottom: 18px; letter-spacing: 1px; text-transform: uppercase;
}
.site-footer__col ul li { margin-bottom: 10px; font-size: 14px; }
.site-footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 13px; color: rgba(255,255,255,0.5);
}
@media (max-width: 768px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .site-footer__bottom { flex-direction: column; gap: 10px; text-align: center; }
}

/* ==========================================================
   HERO (Hero Section)
   ========================================================== */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #FFF1F5 0%, #FFE8EF 40%, #F5E8FF 100%);
  padding: 80px 0 100px;
}
.hero::before {
  content: ''; position: absolute; top: -100px; right: -100px;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,70,127,0.18), transparent 70%);
}
.hero::after {
  content: ''; position: absolute; bottom: -120px; left: -120px;
  width: 360px; height: 360px; border-radius: 50%;
  background: radial-gradient(circle, rgba(78,40,135,0.16), transparent 70%);
}
.hero__inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; }
.hero__eyebrow { margin-bottom: 24px; }
.hero__title {
  font-size: clamp(40px, 5.4vw, 68px); line-height: 1.05; margin-bottom: 24px;
}
.hero__title .accent {
  background: linear-gradient(90deg, var(--c-primary) 0%, #FF8FA8 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  display: inline-block; transform: rotate(-2deg);
}
.hero__sub { font-size: 18px; color: var(--c-text-2); margin-bottom: 32px; max-width: 540px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 40px; }
.hero__stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; max-width: 520px; }
.hero__stat-num { font-family: var(--font-heading); font-size: 32px; color: var(--c-primary); }
.hero__stat-label { font-size: 13px; color: var(--c-text-2); }

.hero__visual { position: relative; height: 480px; }
.hero__visual .blob {
  position: absolute; inset: 0; background: var(--c-primary);
  border-radius: 46% 54% 60% 40% / 52% 48% 52% 48%;
  animation: blob 8s ease-in-out infinite;
  box-shadow: 0 30px 80px rgba(255,70,127,0.30);
}
.hero__visual .blob-2 {
  background: var(--c-secondary); inset: auto;
  width: 220px; height: 220px; right: -30px; top: -30px;
  animation-duration: 10s; opacity: 0.85;
}
.hero__visual .emoji {
  position: absolute; font-size: 60px; z-index: 3;
  filter: drop-shadow(0 8px 16px rgba(0,0,0,0.18));
}
.hero__visual .e1 { top: 50%; left: 50%; transform: translate(-50%,-50%); font-size: 160px; }
.hero__visual .e2 { top: 10%; right: 18%; font-size: 56px; animation: float 4s ease-in-out infinite; }
.hero__visual .e3 { bottom: 12%; left: 8%; font-size: 48px; animation: float 5s ease-in-out infinite 1s; }
.hero__visual .e4 { top: 18%; left: 6%; font-size: 42px; animation: float 6s ease-in-out infinite 0.5s; }
.hero__visual .e5 { bottom: 8%; right: 10%; font-size: 50px; animation: float 4.5s ease-in-out infinite 1.5s; }

@keyframes blob {
  0%,100% { border-radius: 46% 54% 60% 40% / 52% 48% 52% 48%; }
  50%     { border-radius: 60% 40% 46% 54% / 48% 52% 48% 52%; }
}
@keyframes float {
  0%,100% { transform: translateY(0) rotate(-4deg); }
  50%     { transform: translateY(-16px) rotate(4deg); }
}
@media (max-width: 880px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { height: 360px; order: -1; }
}

/* ==========================================================
   SECTION COMMON
   ========================================================== */
.section { padding: 96px 0; }
.section--soft { background: var(--c-bg-soft); }
.section--cream { background: var(--c-bg-cream); }
.section--dark { background: var(--c-purple); color: #fff; }
.section--pink { background: linear-gradient(180deg, #FFF1F5, #FFFFFF); }
.section__head { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.section__head .eyebrow { margin-bottom: 18px; }
.section__head h2 { margin-bottom: 16px; }
.section__head p { color: var(--c-text-2); font-size: 17px; }
.section__head.left { text-align: left; margin-left: 0; }

/* ==========================================================
   MARKET INSIGHTS
   ========================================================== */
.market-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.market-card {
  padding: 36px 28px; border-radius: var(--radius-lg);
  background: #fff; border: 1px solid var(--c-border);
  transition: transform 0.3s, box-shadow 0.3s; position: relative; overflow: hidden;
}
.market-card::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--c-primary-pale), transparent);
  opacity: 0; transition: opacity 0.3s;
}
.market-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.market-card:hover::before { opacity: 1; }
.market-card > * { position: relative; z-index: 2; }
.market-card__icon {
  width: 56px; height: 56px; border-radius: 16px;
  background: var(--c-primary-pale); color: var(--c-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; margin-bottom: 20px;
}
.market-card__icon.purple { background: #EFE7F8; color: var(--c-secondary); }
.market-card__icon.mint { background: #E2F5EC; color: #2A9D6F; }
.market-card__title { font-size: 20px; margin-bottom: 8px; }
.market-card__stats {
  display: flex; align-items: baseline; gap: 6px; margin: 14px 0;
}
.market-card__num {
  font-family: var(--font-heading); font-size: 40px;
  color: var(--c-primary); line-height: 1;
}
.market-card__unit { font-size: 14px; color: var(--c-text-2); font-weight: 600; }
.market-card__desc { color: var(--c-text-2); font-size: 14px; }
@media (max-width: 880px) { .market-grid { grid-template-columns: 1fr; } }

/* ==========================================================
   PILLARS / 三大核心架构
   ========================================================== */
.pillars-grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 28px;
}
.pillar {
  background: #fff; border-radius: var(--radius-lg); padding: 40px 32px;
  border: 2px solid var(--c-border); position: relative; overflow: hidden;
  transition: transform 0.3s, border-color 0.3s;
}
.pillar:hover { transform: translateY(-6px); border-color: var(--c-primary); }
.pillar__num {
  position: absolute; top: 20px; right: 24px;
  font-family: var(--font-heading); font-size: 90px;
  color: var(--c-primary-pale); line-height: 1; z-index: 0;
}
.pillar__tag {
  display: inline-block; padding: 6px 14px; border-radius: 999px;
  background: var(--c-primary); color: #fff;
  font-size: 13px; font-weight: 700; margin-bottom: 18px; position: relative; z-index: 2;
}
.pillar__title { font-size: 26px; margin-bottom: 12px; position: relative; z-index: 2; }
.pillar__quote {
  font-size: 16px; color: var(--c-primary-dark); font-weight: 600;
  margin-bottom: 14px; font-style: italic; position: relative; z-index: 2;
}
.pillar__desc { color: var(--c-text-2); font-size: 14px; position: relative; z-index: 2; }
@media (max-width: 880px) { .pillars-grid { grid-template-columns: 1fr; } }

/* ==========================================================
   ENGINES / 四大引擎
   ========================================================== */
.engines-grid {
  display: grid; grid-template-columns: repeat(2,1fr); gap: 28px;
}
.engine {
  display: flex; gap: 24px; align-items: flex-start;
  background: #fff; padding: 32px; border-radius: var(--radius-lg);
  border: 1px solid var(--c-border); transition: all 0.3s;
}
.engine:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--c-primary); }
.engine__num {
  flex-shrink: 0; width: 64px; height: 64px; border-radius: 18px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
  color: #fff; font-family: var(--font-heading); font-size: 28px;
  display: flex; align-items: center; justify-content: center;
}
.engine__num.purple { background: linear-gradient(135deg, var(--c-secondary), var(--c-lilac)); }
.engine__num.mint   { background: linear-gradient(135deg, #2A9D6F, #6CCFA6); }
.engine__num.yellow { background: linear-gradient(135deg, #F0A531, #FFD66B); }
.engine__title { font-size: 22px; margin-bottom: 8px; font-family: var(--font-body); font-weight: 700; }
.engine__sub { color: var(--c-primary); font-size: 13px; font-weight: 700; margin-bottom: 10px; letter-spacing: 0.5px; }
.engine__desc { color: var(--c-text-2); font-size: 14px; }
@media (max-width: 880px) { .engines-grid { grid-template-columns: 1fr; } .engine { flex-direction: column; } }

/* ==========================================================
   AUDIENCE / 目标人群
   ========================================================== */
.audience-grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 24px;
}
.audience-card {
  background: #fff; border-radius: var(--radius-lg); padding: 36px 28px;
  text-align: center; border: 2px solid transparent;
  transition: all 0.3s;
}
.audience-card:hover { border-color: var(--c-primary); transform: translateY(-4px); }
.audience-card__avatar {
  width: 80px; height: 80px; border-radius: 50%; margin: 0 auto 18px;
  background: var(--c-primary-pale);
  display: flex; align-items: center; justify-content: center; font-size: 38px;
}
.audience-card h3 { font-size: 22px; margin-bottom: 8px; }
.audience-card .label {
  font-size: 13px; color: var(--c-muted); font-weight: 600;
  letter-spacing: 0.5px; text-transform: uppercase; margin-bottom: 18px;
}
.audience-card .pains { text-align: left; padding-top: 18px; border-top: 1px dashed var(--c-border); }
.audience-card .pains li {
  padding: 8px 0 8px 26px; position: relative; font-size: 14px; color: var(--c-text-2);
}
.audience-card .pains li::before {
  content: '✕'; position: absolute; left: 0; top: 8px;
  color: var(--c-primary); font-weight: 700;
}
@media (max-width: 880px) { .audience-grid { grid-template-columns: 1fr; } }

/* ==========================================================
   PARTNER TYPES (合伙人类型)
   ========================================================== */
.ptype-grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 24px;
}
.ptype {
  background: #fff; border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--c-border); transition: all 0.3s;
}
.ptype:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.ptype__head {
  padding: 32px 28px 24px; color: #fff; position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
}
.ptype__head.purple { background: linear-gradient(135deg, var(--c-secondary), var(--c-lilac)); }
.ptype__head.mint   { background: linear-gradient(135deg, #2A9D6F, #6CCFA6); }
.ptype__head .tag {
  font-size: 12px; font-weight: 700; opacity: 0.85;
  letter-spacing: 1px; text-transform: uppercase; margin-bottom: 8px;
}
.ptype__head h3 { font-size: 28px; color: #fff; }
.ptype__head .invest {
  margin-top: 14px; font-size: 14px; opacity: 0.95;
}
.ptype__head .invest b { font-family: var(--font-heading); font-size: 22px; }
.ptype__body { padding: 28px; }
.ptype__section { margin-bottom: 20px; }
.ptype__section h4 {
  font-family: var(--font-body); font-weight: 700; font-size: 14px;
  color: var(--c-primary); letter-spacing: 0.6px; text-transform: uppercase;
  margin-bottom: 10px;
}
.ptype__section p { font-size: 14px; color: var(--c-text-2); }
.ptype__list li {
  padding: 6px 0 6px 26px; position: relative; font-size: 14px;
}
.ptype__list li::before {
  content: '✓'; position: absolute; left: 0; top: 6px;
  color: var(--c-primary); font-weight: 700;
}
@media (max-width: 880px) { .ptype-grid { grid-template-columns: 1fr; } }

/* ==========================================================
   PROFIT MODEL
   ========================================================== */
.profit-table {
  background: #fff; border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--c-border); box-shadow: var(--shadow-sm);
}
.profit-row {
  display: grid; grid-template-columns: 1.4fr repeat(4, 1fr);
  padding: 20px 24px; align-items: center;
}
.profit-row + .profit-row { border-top: 1px solid var(--c-border); }
.profit-row--head {
  background: var(--c-purple); color: #fff;
  font-weight: 700; font-size: 14px; letter-spacing: 0.6px; text-transform: uppercase;
}
.profit-row__label { font-weight: 700; font-size: 15px; }
.profit-row__value { font-size: 14px; }
.profit-row__value b { font-family: var(--font-heading); color: var(--c-primary); font-size: 18px; }
@media (max-width: 880px) {
  .profit-table { overflow-x: auto; }
  .profit-row { grid-template-columns: 200px repeat(4, minmax(140px, 1fr)); min-width: 720px; }
}

/* ==========================================================
   COMPARISON TABLE
   ========================================================== */
.compare {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
}
.compare__col {
  background: #fff; border-radius: var(--radius-lg); padding: 36px 28px;
  border: 1px solid var(--c-border);
}
.compare__col--featured {
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
  color: #fff; border: 0; transform: scale(1.02);
}
.compare__col h3 { font-size: 24px; margin-bottom: 8px; color: inherit; }
.compare__col--featured h3 { color: #fff; }
.compare__col .sub { font-size: 13px; opacity: 0.7; margin-bottom: 24px; }
.compare__list li {
  padding: 12px 0 12px 32px; position: relative; font-size: 14px;
  border-top: 1px solid rgba(0,0,0,0.06);
}
.compare__col--featured .compare__list li { border-color: rgba(255,255,255,0.18); }
.compare__list li::before {
  content: ''; position: absolute; left: 0; top: 14px;
  width: 18px; height: 18px; border-radius: 50%;
  background-size: 60%; background-position: center; background-repeat: no-repeat;
}
.compare__col .compare__list li::before {
  background-color: #FFE0E8; background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23FF467F'><path d='M19 13H5v-2h14v2z'/></svg>");
}
.compare__col--featured .compare__list li::before {
  background-color: rgba(255,255,255,0.25);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23ffffff'><path d='M9 16.2l-3.5-3.5L4 14.2 9 19.2 20 8.2l-1.5-1.5z'/></svg>");
}
@media (max-width: 880px) { .compare { grid-template-columns: 1fr; } .compare__col--featured { transform: none; } }

/* ==========================================================
   TIMELINE / 阶段时间轴
   ========================================================== */
.timeline { position: relative; padding-left: 60px; max-width: 880px; margin: 0 auto; }
.timeline::before {
  content: ''; position: absolute; left: 18px; top: 0; bottom: 0;
  width: 3px; background: linear-gradient(180deg, var(--c-primary), var(--c-secondary));
  border-radius: 2px;
}
.timeline-item { position: relative; margin-bottom: 36px; }
.timeline-item__dot {
  position: absolute; left: -54px; top: 0;
  width: 40px; height: 40px; border-radius: 50%;
  background: #fff; border: 3px solid var(--c-primary);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading); color: var(--c-primary); font-size: 16px;
  z-index: 2;
}
.timeline-item__body {
  background: #fff; border-radius: var(--radius); padding: 24px 28px;
  border: 1px solid var(--c-border);
}
.timeline-item__time {
  font-size: 12px; color: var(--c-primary); font-weight: 700;
  letter-spacing: 0.6px; text-transform: uppercase; margin-bottom: 6px;
}
.timeline-item__title { font-size: 20px; margin-bottom: 6px; font-family: var(--font-body); font-weight: 700; }
.timeline-item__desc { font-size: 14px; color: var(--c-text-2); }

/* ==========================================================
   AI PRODUCT DIRECTIONS (AI产品方向)
   ========================================================== */
.ai-grid {
  display: grid; grid-template-columns: repeat(4,1fr); gap: 24px;
}
.ai-card {
  background: #fff; border-radius: var(--radius-lg); padding: 32px 24px;
  border: 1px solid var(--c-border); transition: all 0.3s; position: relative; overflow: hidden;
}
.ai-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--c-primary);
}
.ai-card:nth-child(2)::before { background: var(--c-secondary); }
.ai-card:nth-child(3)::before { background: #2A9D6F; }
.ai-card:nth-child(4)::before { background: #F0A531; }
.ai-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.ai-card__icon {
  width: 56px; height: 56px; border-radius: 16px;
  background: var(--c-primary-pale); color: var(--c-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; margin-bottom: 18px;
}
.ai-card__tag {
  font-size: 12px; font-weight: 700; letter-spacing: 0.5px;
  color: var(--c-muted); text-transform: uppercase; margin-bottom: 8px;
}
.ai-card__title { font-size: 19px; margin-bottom: 10px; font-family: var(--font-body); font-weight: 700; }
.ai-card__desc { font-size: 14px; color: var(--c-text-2); line-height: 1.55; }
@media (max-width: 1100px) { .ai-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 600px) { .ai-grid { grid-template-columns: 1fr; } }

/* ==========================================================
   TECH STACK / 技术底座
   ========================================================== */
.tech-wrap {
  background: linear-gradient(135deg, var(--c-purple) 0%, var(--c-secondary) 100%);
  border-radius: var(--radius-lg); padding: 56px 48px; color: #fff;
  position: relative; overflow: hidden;
}
.tech-wrap::before {
  content: ''; position: absolute; top: -50px; right: -50px;
  width: 280px; height: 280px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,70,127,0.4), transparent 70%);
}
.tech-wrap h2, .tech-wrap h3 { color: #fff; }
.tech-wrap__grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 24px;
  margin-top: 32px; position: relative; z-index: 2;
}
.tech-item {
  background: rgba(255,255,255,0.08); border-radius: var(--radius);
  padding: 24px; backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,0.12);
}
.tech-item__icon { font-size: 32px; margin-bottom: 12px; }
.tech-item h4 { font-size: 18px; margin-bottom: 8px; color: #fff; font-family: var(--font-body); font-weight: 700; }
.tech-item p { font-size: 13px; color: rgba(255,255,255,0.75); }
@media (max-width: 880px) { .tech-wrap { padding: 36px 24px; } .tech-wrap__grid { grid-template-columns: 1fr; } }

/* ==========================================================
   PAIN POINTS
   ========================================================== */
.pain-grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 22px;
}
.pain-card {
  background: #fff; border-radius: var(--radius); padding: 28px 24px;
  border-left: 4px solid var(--c-primary); transition: all 0.3s;
}
.pain-card:nth-child(3n+2) { border-color: var(--c-secondary); }
.pain-card:nth-child(3n+3) { border-color: #2A9D6F; }
.pain-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.pain-card__stat {
  font-family: var(--font-heading); font-size: 36px; color: var(--c-primary);
  line-height: 1; margin-bottom: 10px;
}
.pain-card:nth-child(3n+2) .pain-card__stat { color: var(--c-secondary); }
.pain-card:nth-child(3n+3) .pain-card__stat { color: #2A9D6F; }
.pain-card__title { font-size: 17px; margin-bottom: 8px; font-family: var(--font-body); font-weight: 700; }
.pain-card__desc { font-size: 13px; color: var(--c-text-2); }
@media (max-width: 880px) { .pain-grid { grid-template-columns: 1fr; } }

/* ==========================================================
   CTA BLOCKS
   ========================================================== */
.cta-banner {
  background: linear-gradient(135deg, var(--c-primary) 0%, #FF8FA8 100%);
  border-radius: var(--radius-lg); padding: 64px 48px; color: #fff;
  text-align: center; position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ''; position: absolute; top: -80px; right: -80px;
  width: 300px; height: 300px; border-radius: 50%;
  background: rgba(255,255,255,0.16);
}
.cta-banner::after {
  content: ''; position: absolute; bottom: -100px; left: -100px;
  width: 260px; height: 260px; border-radius: 50%;
  background: rgba(255,255,255,0.12);
}
.cta-banner > * { position: relative; z-index: 2; }
.cta-banner h2 { color: #fff; margin-bottom: 14px; font-size: clamp(28px, 4vw, 44px); }
.cta-banner p { font-size: 17px; max-width: 640px; margin: 0 auto 28px; opacity: 0.95; }
.cta-banner__actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ==========================================================
   STEPS / 流程
   ========================================================== */
.steps {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  position: relative;
}
.step { text-align: center; position: relative; padding-top: 12px; }
.step__num {
  width: 80px; height: 80px; margin: 0 auto 18px;
  border-radius: 50%; background: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading); font-size: 32px;
  color: var(--c-primary); border: 3px solid var(--c-primary);
  position: relative; z-index: 2;
}
.step__num::after {
  content: ''; position: absolute; top: 50%; left: 100%;
  width: calc(100% + 24px - 80px); height: 2px;
  background: repeating-linear-gradient(90deg, var(--c-primary) 0 6px, transparent 6px 12px);
}
.step:last-child .step__num::after { display: none; }
.step__title { font-size: 17px; margin-bottom: 6px; font-family: var(--font-body); font-weight: 700; }
.step__desc { font-size: 13px; color: var(--c-text-2); }
@media (max-width: 880px) {
  .steps { grid-template-columns: repeat(2,1fr); gap: 32px 24px; }
  .step__num::after { display: none; }
}

/* ==========================================================
   FAQ
   ========================================================== */
.faq-list { max-width: 880px; margin: 0 auto; }
.faq-item {
  background: #fff; border-radius: var(--radius);
  border: 1px solid var(--c-border); margin-bottom: 14px; overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.faq-item:hover { border-color: var(--c-primary); }
.faq-item__q {
  padding: 22px 28px; font-weight: 700; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between;
  font-size: 16px; gap: 16px;
}
.faq-item__q .icon {
  flex-shrink: 0; width: 28px; height: 28px; border-radius: 50%;
  background: var(--c-primary-pale); color: var(--c-primary);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 18px; transition: transform 0.3s;
}
.faq-item.is-open .faq-item__q .icon { transform: rotate(45deg); }
.faq-item__a {
  max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 28px;
}
.faq-item.is-open .faq-item__a { max-height: 360px; padding: 0 28px 22px; color: var(--c-text-2); font-size: 15px; line-height: 1.7; }

/* ==========================================================
   FORM
   ========================================================== */
.form-card {
  background: #fff; border-radius: var(--radius-lg); padding: 40px;
  box-shadow: var(--shadow); border: 1px solid var(--c-border);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block; font-size: 13px; font-weight: 700;
  letter-spacing: 0.4px; margin-bottom: 8px; color: var(--c-text);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; padding: 14px 16px;
  border: 1.5px solid var(--c-border); border-radius: 12px;
  font-size: 14px; background: var(--c-bg-soft);
  transition: border-color 0.2s, background 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none; border-color: var(--c-primary); background: #fff;
}
.form-group textarea { min-height: 120px; resize: vertical; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } .form-card { padding: 28px 22px; } }

/* ==========================================================
   FEATURE CARDS / 通用卡片
   ========================================================== */
.feature-grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 24px;
}
.feature-card {
  background: #fff; border-radius: var(--radius-lg); padding: 32px 28px;
  border: 1px solid var(--c-border); transition: all 0.3s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--c-primary); }
.feature-card__icon {
  width: 56px; height: 56px; border-radius: 16px;
  background: var(--c-primary-pale); color: var(--c-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; margin-bottom: 18px;
}
.feature-card h3 { font-size: 19px; margin-bottom: 10px; font-family: var(--font-body); font-weight: 700; }
.feature-card p { font-size: 14px; color: var(--c-text-2); }
@media (max-width: 880px) { .feature-grid { grid-template-columns: 1fr; } }

/* ==========================================================
   GALLERY
   ========================================================== */
.gallery {
  display: grid; grid-template-columns: repeat(4,1fr); gap: 16px;
}
.gallery__item {
  aspect-ratio: 1; border-radius: var(--radius); overflow: hidden;
  background: linear-gradient(135deg, var(--c-primary-pale), #fff);
  display: flex; align-items: center; justify-content: center;
  font-size: 64px; transition: transform 0.3s; cursor: pointer;
}
.gallery__item:hover { transform: scale(1.04) rotate(-3deg); }
.gallery__item:nth-child(4n+2) { background: linear-gradient(135deg, #EFE7F8, #fff); }
.gallery__item:nth-child(4n+3) { background: linear-gradient(135deg, #E2F5EC, #fff); }
.gallery__item:nth-child(4n+4) { background: linear-gradient(135deg, #FFF1D9, #fff); }
@media (max-width: 880px) { .gallery { grid-template-columns: repeat(2,1fr); } }

/* ==========================================================
   MARQUEE (跑马灯)
   ========================================================== */
.marquee {
  background: var(--c-text); color: #fff; padding: 18px 0; overflow: hidden;
  position: relative; white-space: nowrap;
}
.marquee__track {
  display: inline-flex; gap: 36px; align-items: center;
  animation: marquee 30s linear infinite;
}
.marquee__track span {
  font-family: var(--font-heading); font-size: 18px; letter-spacing: 1px;
}
.marquee__track .dot { color: var(--c-primary); }
@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ==========================================================
   PAGE BANNER (内页Banner)
   ========================================================== */
.page-banner {
  position: relative; padding: 100px 0 80px; overflow: hidden;
  background: linear-gradient(135deg, #FFF1F5 0%, #FFE8EF 50%, #F5E8FF 100%);
  text-align: center;
}
.page-banner::before {
  content: ''; position: absolute; top: -60px; right: -60px;
  width: 280px; height: 280px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,70,127,0.18), transparent 70%);
}
.page-banner__eyebrow { margin-bottom: 20px; }
.page-banner h1 { margin-bottom: 18px; }
.page-banner__sub { font-size: 17px; color: var(--c-text-2); max-width: 680px; margin: 0 auto; }
.page-banner__breadcrumb {
  margin-top: 26px; font-size: 13px; color: var(--c-muted);
  display: flex; justify-content: center; gap: 8px;
}
.page-banner__breadcrumb a:hover { color: var(--c-primary); }

/* ==========================================================
   CHANNELS TABLE / 渠道矩阵
   ========================================================== */
.channels-grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 22px;
}
.channel {
  background: #fff; border-radius: var(--radius); padding: 28px;
  border: 1px solid var(--c-border); transition: all 0.3s;
}
.channel:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--c-primary); }
.channel__head { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.channel__logo {
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--c-primary-pale); color: var(--c-primary);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading); font-size: 18px;
}
.channel h3 { font-size: 18px; font-family: var(--font-body); font-weight: 700; }
.channel__goal { font-size: 13px; color: var(--c-primary); font-weight: 700; margin-bottom: 12px; }
.channel__row { padding: 6px 0; font-size: 13px; color: var(--c-text-2); display: flex; gap: 10px; }
.channel__row b { color: var(--c-text); min-width: 64px; font-weight: 700; }
@media (max-width: 880px) { .channels-grid { grid-template-columns: 1fr; } }

/* ==========================================================
   CASE STUDIES
   ========================================================== */
.cases {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 24px;
}
.case {
  background: #fff; border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--c-border); transition: all 0.3s;
}
.case:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.case__hero {
  height: 160px; background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
  display: flex; align-items: center; justify-content: center; font-size: 72px;
}
.case:nth-child(2) .case__hero { background: linear-gradient(135deg, var(--c-secondary), var(--c-lilac)); }
.case:nth-child(3) .case__hero { background: linear-gradient(135deg, #2A9D6F, #6CCFA6); }
.case__body { padding: 28px; }
.case__tag {
  display: inline-block; padding: 4px 12px; border-radius: 999px;
  background: var(--c-primary-pale); color: var(--c-primary);
  font-size: 12px; font-weight: 700; letter-spacing: 0.4px; margin-bottom: 12px;
}
.case h3 { font-size: 20px; margin-bottom: 8px; font-family: var(--font-body); font-weight: 700; }
.case__sub { font-size: 13px; color: var(--c-muted); margin-bottom: 14px; }
.case__list li {
  padding: 6px 0 6px 26px; position: relative; font-size: 13px; color: var(--c-text-2);
}
.case__list li::before {
  content: '→'; position: absolute; left: 0; top: 6px;
  color: var(--c-primary); font-weight: 700;
}
@media (max-width: 880px) { .cases { grid-template-columns: 1fr; } }

/* ==========================================================
   VALUES (价值观)
   ========================================================== */
.values {
  display: grid; grid-template-columns: repeat(4,1fr); gap: 22px;
}
.value {
  background: #fff; border-radius: var(--radius-lg); padding: 32px 24px;
  text-align: center; border: 1px solid var(--c-border); transition: all 0.3s;
}
.value:hover { transform: translateY(-4px); border-color: var(--c-primary); }
.value__icon {
  width: 64px; height: 64px; margin: 0 auto 16px; border-radius: 50%;
  background: var(--c-primary-pale); color: var(--c-primary);
  display: flex; align-items: center; justify-content: center; font-size: 30px;
}
.value:nth-child(2) .value__icon { background: #EFE7F8; color: var(--c-secondary); }
.value:nth-child(3) .value__icon { background: #E2F5EC; color: #2A9D6F; }
.value:nth-child(4) .value__icon { background: #FFF1D9; color: #F0A531; }
.value h3 { font-size: 18px; margin-bottom: 8px; font-family: var(--font-body); font-weight: 700; }
.value p { font-size: 13px; color: var(--c-text-2); }
@media (max-width: 880px) { .values { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 480px) { .values { grid-template-columns: 1fr; } }

/* ==========================================================
   CONTENT / 长文本
   ========================================================== */
.prose { max-width: 820px; margin: 0 auto; font-size: 16px; line-height: 1.8; color: var(--c-text-2); }
.prose h2, .prose h3 { color: var(--c-text); margin: 32px 0 14px; }
.prose p { margin-bottom: 18px; }
.prose ul { padding-left: 20px; margin-bottom: 18px; }
.prose ul li { list-style: disc; margin-bottom: 8px; }

/* ==========================================================
   STATS BLOCK (大数字展示)
   ========================================================== */
.stats-block {
  display: grid; grid-template-columns: repeat(4,1fr); gap: 28px;
  text-align: center;
}
.stats-block__item .num {
  font-family: var(--font-heading); font-size: clamp(36px, 5vw, 60px);
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  line-height: 1;
}
.stats-block__item .label { font-size: 14px; color: var(--c-text-2); margin-top: 8px; }
@media (max-width: 780px) { .stats-block { grid-template-columns: repeat(2,1fr); } }

/* ==========================================================
   TABS
   ========================================================== */
.tabs { display: flex; gap: 8px; justify-content: center; margin-bottom: 36px; flex-wrap: wrap; }
.tab {
  padding: 12px 24px; border-radius: 999px;
  background: var(--c-bg-soft); color: var(--c-text);
  font-size: 14px; font-weight: 700; cursor: pointer;
  transition: all 0.2s; border: 1px solid var(--c-border);
}
.tab:hover { border-color: var(--c-primary); color: var(--c-primary); }
.tab.is-active { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }

/* ==========================================================
   UTILITIES
   ========================================================== */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.mb-48 { margin-bottom: 48px; }
.lead { font-size: 18px; color: var(--c-text-2); }
.tag {
  display: inline-block; padding: 4px 12px; border-radius: 999px;
  background: var(--c-primary-pale); color: var(--c-primary-dark);
  font-size: 12px; font-weight: 700; letter-spacing: 0.4px;
}

/* Print/Animation */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.6s, transform 0.6s; }
.fade-in.in-view { opacity: 1; transform: translateY(0); }