/* ===================== TOKENS ===================== */
:root{
  --bg:#0A0E27;
  --bg-2:#141937;
  --bg-3:#1b2350;
  --card:rgba(255,255,255,.04);
  --card-border:rgba(255,255,255,.08);
  --purple:#6c5ce7;
  --cyan:#00d2ff;
  --text:#e5e7eb;
  --muted:#9ca3af;
  --muted-2:#8485ac;
  --grad:linear-gradient(120deg,#6c5ce7 0%,#00d2ff 100%);
  --radius:18px;
  --shadow:0 20px 60px -20px rgba(0,0,0,.6);
  --maxw:1180px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3{line-height:1.2;font-weight:800;letter-spacing:-.01em}

.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.container--narrow{max-width:760px}
.grad{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.eyebrow{
  display:inline-block;font-size:17px;font-weight:700;letter-spacing:.15em;
  text-transform:uppercase;color:var(--cyan);
  padding:8px 20px;border:1px solid rgba(0,210,255,.35);border-radius:999px;
  background:rgba(0,210,255,.08);
}

/* ===================== BUTTONS ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:15px;border-radius:999px;border:1px solid transparent;
  padding:12px 22px;cursor:pointer;transition:.25s ease;white-space:nowrap;
}
.btn--sm{padding:9px 16px;font-size:14px}
.btn--lg{padding:15px 30px;font-size:16px}
.btn--block{width:100%}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 10px 30px -10px rgba(108,92,231,.7)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -12px rgba(0,210,255,.8)}
.btn--ghost{background:rgba(255,255,255,.05);color:var(--text);border-color:var(--card-border)}
.btn--ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(108,92,231,.5)}

/* ===================== NAV ===================== */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);
  background:rgba(10,14,39,.72);border-bottom:1px solid var(--card-border)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center}
.brand__logo{height:40px;width:auto;object-fit:contain}
.footer__logo{height:52px;width:auto;object-fit:contain;margin-bottom:12px}
.nav__links{display:flex;gap:30px}
.nav__links a{font-size:15px;color:var(--muted);font-weight:500;transition:.2s}
.nav__links a:hover{color:var(--text)}
.nav__cta{margin-left:8px}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav__toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.3s}
.nav__mobile{display:none;flex-direction:column;gap:6px;padding:14px 24px 20px;
  background:rgba(10,14,39,.97);border-bottom:1px solid var(--card-border)}
.nav__mobile a{padding:10px 4px;color:var(--muted);border-bottom:1px solid var(--card-border)}
.nav__mobile .btn{margin-top:8px}

/* ===================== HERO ===================== */
.hero{position:relative;padding:120px 0 90px;overflow:hidden}
.hero__glow{position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(620px 420px at 75% 8%,rgba(108,92,231,.35),transparent 60%),
    radial-gradient(560px 420px at 12% 30%,rgba(0,210,255,.22),transparent 60%);
  filter:blur(10px)}
.hero__grid{position:absolute;inset:0;z-index:0;opacity:.4;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(circle at 50% 30%,#000,transparent 75%)}
.hero__inner{position:relative;z-index:1;text-align:center;max-width:880px}
.hero__title{font-size:clamp(34px,6vw,58px);margin:22px 0 18px;font-weight:900}
.hero__sub{font-size:clamp(16px,2.2vw,19px);color:var(--muted);max-width:640px;margin:0 auto}
.hero__actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin:34px 0 46px}
.hero__stats{display:flex;gap:36px;justify-content:center;flex-wrap:wrap}
.stat{display:flex;flex-direction:column;align-items:center}
.stat b{font-size:30px;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat span{font-size:13px;color:var(--muted-2);margin-top:2px}

/* ===================== SECTIONS ===================== */
.section{padding:88px 0}
.section--alt{background:
  linear-gradient(180deg,rgba(20,25,55,.0),rgba(20,25,55,.55) 50%,rgba(20,25,55,.0)),
  radial-gradient(800px 400px at 50% -10%,rgba(108,92,231,.12),transparent 60%)}
.section__head{text-align:center;max-width:720px;margin:0 auto 48px}
.section__title{font-size:clamp(26px,4vw,40px);margin:16px 0 12px}
.section__sub{color:var(--muted);font-size:16px}
.note{color:var(--muted-2);font-size:13px;text-align:center;margin-top:18px}
.note--center{text-align:center}

/* ===================== GRID & CARDS ===================== */
.grid{display:grid;gap:22px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}
.card{
  background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);
  padding:30px 26px;transition:.28s ease;position:relative;overflow:hidden}
.card::before{content:"";position:absolute;inset:0;border-radius:var(--radius);
  background:linear-gradient(140deg,rgba(108,92,231,.10),transparent 55%);opacity:0;transition:.28s}
.card:hover{transform:translateY(-6px);border-color:rgba(108,92,231,.45);box-shadow:var(--shadow)}
.card:hover::before{opacity:1}
.card__ico{width:54px;height:54px;border-radius:14px;display:grid;place-items:center;
  font-size:26px;background:rgba(108,92,231,.14);border:1px solid var(--card-border);margin-bottom:16px}
.card h3{font-size:19px;margin-bottom:8px}
.card p{color:var(--muted);font-size:15px}

/* ===================== FEATURE CARDS (全链路智能商业闭环) ===================== */
/* ===================== FEATURE GROUPS (全链路智能商业闭环) ===================== */
.feature-groups{display:flex;flex-direction:column;gap:26px}
.feature-group__label{
  display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:17px;
  margin-bottom:14px;padding:8px 16px;border-radius:999px;
  background:var(--card);border:1px solid var(--card-border)
}
.chip-grid{gap:16px}
.chip{
  background:var(--card);border:1px solid var(--card-border);border-radius:14px;
  padding:18px 16px;text-align:center;font-weight:600;font-size:15px;
  transition:.25s;color:var(--text)
}
.chip:hover{border-color:rgba(0,210,255,.5);background:rgba(0,210,255,.06);transform:translateY(-3px)}

/* ===================== TRACK ===================== */
.track-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.track{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);padding:32px}
.track__head{font-size:22px;font-weight:800;margin-bottom:6px}
.track__desc{color:var(--cyan);font-size:14px;font-weight:600;margin-bottom:20px}
.track__list{list-style:none;display:flex;flex-direction:column;gap:14px}
.track__list li{display:flex;align-items:center;gap:14px;font-size:15px;color:var(--text)}
.track__list .num{flex:0 0 auto;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  font-weight:800;font-size:13px;color:#fff;background:var(--grad)}

/* ===================== POLICY STAT CARDS ===================== */
.stat-grid{gap:22px}
.stat-card{
  background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);
  padding:32px 20px;text-align:center;transition:.35s ease
}
.stat-card:hover{transform:translateY(-6px);border-color:rgba(108,92,231,.4);box-shadow:var(--shadow)}
.stat-card__num{font-size:clamp(28px,4vw,44px);font-weight:900;line-height:1.1;margin-bottom:10px}
.stat-card__label{font-size:14px;color:var(--muted-2)}

/* ===================== PLANS ===================== */
.plans{align-items:stretch}
.plan{position:relative;background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);
  padding:32px 28px;display:flex;flex-direction:column;align-items:center;text-align:center;transition:.28s}
.plan:hover{transform:translateY(-6px);border-color:rgba(108,92,231,.4)}
.plan--hot{border-color:rgba(0,210,255,.55);background:linear-gradient(180deg,rgba(0,210,255,.08),rgba(108,92,231,.06))}
.plan__badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  background:var(--grad);color:#fff;font-size:12px;font-weight:700;padding:5px 16px;border-radius:999px}
.plan__icon{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;font-size:28px;
  background:rgba(108,92,231,.12);border:1px solid var(--card-border);margin-bottom:18px
}
.plan__icon--hot{
  background:linear-gradient(135deg,rgba(108,92,231,.22),rgba(0,210,255,.14));
  border-color:rgba(0,210,255,.3)
}
.plan__name{font-size:22px;margin-bottom:4px}
.plan__tag{color:var(--muted);font-size:14px;margin-bottom:18px}
.plan__price{font-size:42px;font-weight:900;margin-bottom:24px;display:flex;align-items:baseline;justify-content:center;gap:2px}
.plan__price .cur{font-size:22px;font-weight:800}
.plan__price .per{font-size:15px;color:var(--muted);font-weight:600;margin-left:4px}
.plan__list{list-style:none;display:flex;flex-direction:column;gap:12px;margin-bottom:28px;width:100%;flex:1;
  text-align:left;padding:0 4px}
.plan__list li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:var(--text)}
.plan__list li.muted{color:var(--muted-2)}
.plan__list .chk{
  flex:0 0 auto;width:20px;height:20px;border-radius:6px;display:grid;place-items:center;
  font-size:13px;font-weight:700;color:#fff;background:var(--grad);
  /* fallback checkmark */
  line-height:1
}
.plan__list li.muted .chk{background:rgba(255,255,255,.08);color:var(--muted-2)}
.plan__btn{margin-top:auto}

/* ===================== TESTIMONIALS ===================== */
.tcard{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);padding:28px;
  display:flex;flex-direction:column;gap:16px;transition:.35s}
.tcard:hover{transform:translateY(-6px);border-color:rgba(108,92,231,.4);box-shadow:var(--shadow)}
.tcard__quote{
  font-size:28px;line-height:1;color:rgba(108,92,231,.35);font-family:Georgia,serif
}
.tcard__text{font-size:15px;color:var(--text);line-height:1.75;flex:1}
.tcard__author{display:flex;align-items:center;gap:12px;padding-top:4px}
.tcard__avatar{width:44px;height:44px;border-radius:50%;object-fit:cover;border:2px solid rgba(108,92,231,.4)}
.tcard__author b{display:block;font-size:14.5px;font-weight:700}
.tcard__author span{font-size:12.5px;color:var(--muted-2)}
.tcard__stars{color:#facc15;font-size:15px;letter-spacing:2px}

/* ===================== FAQ ===================== */
.faq{display:flex;flex-direction:column;gap:12px}
.faq__item{background:var(--card);border:1px solid var(--card-border);border-radius:14px;padding:4px 20px;transition:.25s}
.faq__item[open]{border-color:rgba(108,92,231,.4)}
.faq__item summary{cursor:pointer;font-weight:600;font-size:16px;padding:16px 0;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{content:"+";font-size:22px;color:var(--cyan);transition:.3s}
.faq__item[open] summary::after{transform:rotate(45deg)}
.faq__item p{padding:0 0 18px;color:var(--muted);font-size:15px}

/* ===================== FORM ===================== */
.form{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);
  padding:34px;display:flex;flex-direction:column;gap:18px;box-shadow:var(--shadow)}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px;font-size:14px;color:var(--muted)}
.field input,.field select,.field textarea{
  background:#141937;border:1px solid var(--card-border);border-radius:12px;
  padding:13px 15px;color:var(--text);font-size:15px;font-family:inherit;transition:.2s;width:100%;
  -webkit-appearance:none;-moz-appearance:none;appearance:none;
  color-scheme:dark;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239ca3af' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;
  padding-right:36px}
.field textarea{resize:vertical;background-image:none;padding-right:15px}
/* Dark theme for select dropdown options */
.field select option{
  background:#1b2350;color:#e5e7eb;padding:10px 14px
}
.field select option:checked{
  background:linear-gradient(120deg,#6c5ce7,#00d2ff);color:#fff}
.field select option:first-child{
  color:var(--muted-2)
}
.field input::placeholder,.field textarea::placeholder{color:var(--muted-2)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--cyan);background:rgba(0,210,255,.06);box-shadow:0 0 0 3px rgba(0,210,255,.12)}
.field input.invalid,.field select.invalid{border-color:#ff6b81;box-shadow:0 0 0 3px rgba(255,107,129,.15)}
.form__hint{font-size:12.5px;color:var(--muted-2);text-align:center}
.form__hint.ok{color:#4ade80}
.form__hint.err{color:#ff6b81}

/* ===================== FOOTER ===================== */
.footer{border-top:1px solid var(--card-border);
  background:linear-gradient(180deg,rgba(20,25,55,.55),rgba(10,14,39,.6));padding-top:56px}
.footer__inner{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;padding-bottom:38px}
.footer__brand{max-width:380px}
.footer__desc{color:var(--muted);font-size:14px;margin:16px 0 16px;line-height:1.7}
.footer__contact{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.footer__contact span{font-size:14px;color:var(--text)}
.footer__contact span:first-child{color:var(--cyan);font-weight:700}
.footer__social{display:flex;gap:12px}
.footer__social a{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:18px;
  background:var(--card);border:1px solid var(--card-border);transition:.25s}
.footer__social a:hover{border-color:rgba(0,210,255,.5);background:rgba(0,210,255,.08);transform:translateY(-3px)}
.footer__col{display:flex;flex-direction:column;gap:13px}
.footer__title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:4px;
  padding-bottom:12px;border-bottom:1px solid var(--card-border)}
.footer__col a{color:var(--muted);font-size:14px;transition:.2s}
.footer__col a:hover{color:var(--cyan)}
.footer__bar{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 24px;border-top:1px solid var(--card-border);
  color:var(--muted-2);font-size:13px}
.footer__bar-right{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.footer__bar-right a{color:var(--muted-2);text-decoration:none;border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}
.footer__bar-right a:hover{color:var(--text);border-color:currentColor}

/* ===================== REVEAL ANIM ===================== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ===================== RESPONSIVE ===================== */
@media (max-width:980px){
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .chip-grid{grid-template-columns:repeat(2,1fr)}
  .track-grid{grid-template-columns:1fr}
  .footer__inner{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .nav__links,.nav__cta{display:none}
  .nav__toggle{display:flex}
  .nav__mobile.open{display:flex}
  .grid--3{grid-template-columns:1fr}
  .grid--4{grid-template-columns:1fr}
  .chip-grid{grid-template-columns:repeat(2,1fr)}
  .form__row{grid-template-columns:1fr}
  .hero{padding:90px 0 70px}
  .section{padding:64px 0}
  .footer__inner{grid-template-columns:1fr;gap:30px}
  .footer__bar{flex-direction:column;gap:6px}
}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
}