:root{
  --ink:#0f1432;
  --ink-2:#2f3559;
  --muted:#5b6288;
  --line:rgba(24,32,90,.10);
  --bg:#f6f7ff;
  --indigo:#4f46e5;
  --cyan:#06b6d4;
  --pink:#ec4899;
  --shadow-sm:0 6px 18px rgba(31,41,120,.07);
  --shadow-md:0 18px 44px rgba(31,41,120,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  line-height:1.7;
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 520px at 4% -8%, rgba(79,70,229,.16), transparent 65%),
    radial-gradient(760px 500px at 98% 0%, rgba(236,72,153,.13), transparent 62%),
    radial-gradient(900px 620px at 50% 106%, rgba(6,182,212,.14), transparent 66%),
    radial-gradient(600px 400px at 70% 45%, rgba(139,92,246,.10), transparent 70%);
  background-attachment:fixed;
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%}
a{color:inherit}
.container{width:100%;max-width:1180px;margin-inline:auto;padding-inline:20px}
section[id]{scroll-margin-top:86px}
h1,h2,h3{letter-spacing:-.3px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:999px;font-size:15px;font-weight:600;
  text-decoration:none;border:1px solid transparent;cursor:pointer;
  font-family:inherit;
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease;
}
.btn-primary{
  color:#fff;
  background:linear-gradient(120deg,#4f46e5,#7c3aed 48%,#06b6d4);
  box-shadow:0 12px 26px rgba(79,70,229,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 36px rgba(79,70,229,.34)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-ghost{
  background:#fff;color:var(--ink);border-color:rgba(79,70,229,.28);box-shadow:var(--shadow-sm);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(79,70,229,.52);box-shadow:0 14px 30px rgba(31,41,120,.12)}
.btn-lg{padding:14px 28px;font-size:16px}
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:18px;position:relative;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.ai-page-logo{width:42px;display:block}
.brand-name{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.2px;white-space:nowrap}
.nav{flex:1;display:flex;justify-content:flex-end}
.nav-links{
  display:flex;align-items:center;justify-content:flex-end;
  gap:0;list-style:none;margin:0;padding:0;flex-wrap:wrap;
}
.nav-links a{
  display:block;position:relative;
  padding:9px 7px;font-size:14px;color:var(--ink-2);text-decoration:none;
  border-radius:8px;transition:color .25s ease;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:7px;right:7px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--indigo),var(--cyan));
  transform:scaleX(0);transform-origin:left;transition:transform .28s ease;
}
.nav-links a:hover{color:var(--indigo)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn-nav{padding:9px 18px;font-size:14px}
.nav-toggle{
  display:none;width:38px;height:38px;padding:0;border-radius:11px;
  border:1px solid rgba(79,70,229,.25);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:#3b3f66;transition:transform .25s ease,opacity .25s ease}
.nav-toggle.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.hero{padding:56px 0 24px}
.hero-inner{display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;margin:0 0 16px;border-radius:999px;
  background:rgba(79,70,229,.10);border:1px solid rgba(79,70,229,.18);
  color:#4338ca;font-size:13px;font-weight:600;letter-spacing:.4px;
}
.hero h1{font-size:clamp(30px,4vw,45px);line-height:1.24;margin:0 0 18px}
.hero-sub{margin:0 0 26px;max-width:58ch;font-size:16px;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px}
.hero-points{list-style:none;display:flex;flex-wrap:wrap;gap:10px 22px;margin:0;padding:0;font-size:14px;color:var(--ink-2)}
.hero-points li{display:flex;align-items:center;gap:8px}
.hero-points li::before{
  content:"";width:7px;height:7px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,var(--cyan),var(--indigo));
  box-shadow:0 0 0 4px rgba(79,70,229,.10);
}
.hero-panel{
  position:relative;overflow:hidden;
  padding:24px;border-radius:24px;
  background:linear-gradient(160deg,#ffffff,#f1f3ff 60%,#eefbff);
  border:1px solid rgba(79,70,229,.16);
  box-shadow:0 24px 60px rgba(41,50,140,.14),inset 0 0 0 1px rgba(255,255,255,.6);
}
.hero-panel::before{
  content:"";position:absolute;top:-40px;right:-30px;width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(79,70,229,.32),transparent 70%);
  filter:blur(6px);pointer-events:none;animation:floatY 7s ease-in-out infinite;
}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.panel-title{margin:0 0 16px;font-size:14px;font-weight:700;color:#4338ca;letter-spacing:.4px}
.layer-list{list-style:none;margin:0 0 16px;padding:0;display:grid;gap:12px;position:relative}
.layer-list li{
  display:flex;flex-direction:column;gap:4px;
  padding:12px 14px;border-radius:14px;background:#fff;border:1px solid var(--line);
  box-shadow:0 6px 18px rgba(31,41,120,.06);
  transition:transform .28s ease,box-shadow .28s ease;
}
.layer-list li:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(31,41,120,.13)}
.layer-key{font-size:13px;font-weight:700;color:#4338ca}
.layer-desc{font-size:13.5px;line-height:1.55;color:var(--ink-2)}
.panel-link{
  display:inline-block;font-size:13.5px;font-weight:600;color:#4338ca;text-decoration:none;
  border-bottom:1px dashed rgba(67,56,202,.5);padding-bottom:2px;
  transition:color .25s ease,border-color .25s ease;
}
.panel-link:hover{color:var(--pink);border-color:rgba(236,72,153,.6)}
.stat-strip{
  list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  margin:42px 0 0;padding:22px;
  background:rgba(255,255,255,.82);
  border:1px solid rgba(79,70,229,.14);border-radius:22px;box-shadow:var(--shadow-sm);
}
.stat-strip li{text-align:center}
.stat-strip .num{display:block;font-size:26px;font-weight:800;letter-spacing:-.5px;color:#312e81}
.stat-strip .lbl{font-size:13px;color:var(--muted)}
.section{padding:64px 0}
.section-head{max-width:760px;margin:0 auto 34px;text-align:center}
.section-head h2{font-size:clamp(23px,2.7vw,32px);line-height:1.32;margin:0 0 12px}
.section-head p{margin:0;font-size:15.5px;color:var(--muted)}
.grid{display:grid;gap:18px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;
  box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(79,70,229,.3)}
.card h3{margin:14px 0 8px;font-size:17px}
.card p{margin:0;font-size:14.5px;line-height:1.7;color:var(--muted)}
.ico{
  display:grid;place-items:center;width:44px;height:44px;border-radius:13px;
  color:#fff;background:var(--c,#4f46e5);
  box-shadow:0 12px 24px -10px var(--c,#4f46e5);
}
.ico svg{width:22px;height:22px}
.about-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:28px;align-items:start}
.about-copy p{margin:0 0 14px;font-size:15px;color:var(--ink-2);line-height:1.85}
.about-copy p:last-child{margin-bottom:0}
.about-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.about-list li{
  padding:14px 16px;border-radius:14px;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);border-left:3px solid transparent;
  transition:transform .28s ease,box-shadow .28s ease,border-left-color .28s ease;
}
.about-list li:hover{transform:translateX(4px);box-shadow:0 14px 30px rgba(31,41,120,.12);border-left-color:var(--indigo)}
.about-list b{display:block;font-size:14.5px;color:var(--ink);margin-bottom:2px}
.about-list span{font-size:13.5px;color:var(--muted)}
.studio-modes{margin-bottom:8px}
.tag-cloud{
  list-style:none;display:flex;flex-wrap:wrap;gap:10px;justify-content:center;
  margin:28px 0 0;padding:0;
}
.tag-cloud li{
  padding:8px 16px;border-radius:999px;background:#fff;border:1px solid rgba(79,70,229,.18);
  font-size:13.5px;color:var(--ink-2);box-shadow:0 4px 12px rgba(31,41,120,.05);
  transition:transform .25s ease,color .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.tag-cloud li:hover{transform:translateY(-3px);color:var(--indigo);border-color:rgba(79,70,229,.5);box-shadow:0 10px 22px rgba(31,41,120,.12)}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.step-card{position:relative;padding-top:26px}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:11px;margin-bottom:6px;
  background:linear-gradient(135deg,#4f46e5,#06b6d4);color:#fff;font-size:14px;font-weight:700;
}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.case-item{
  background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;
  box-shadow:var(--shadow-sm);transition:transform .3s ease,box-shadow .3s ease;
}
.case-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.case-media{
  aspect-ratio:16/10;display:grid;place-items:center;padding:10px;
  background:linear-gradient(135deg,#eef1ff,#e6fbff);
}
.case-media img{display:block;max-width:100%;max-height:100%;height:auto;object-fit:contain}
.case-body{padding:16px 18px 18px}
.case-body h3{margin:0 0 6px;font-size:16px}
.case-body p{margin:0;font-size:13.5px;color:var(--muted)}
.score-banner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  padding:22px 26px;margin-bottom:22px;border-radius:20px;
  background:linear-gradient(120deg,#eef1ff,#e9fbff 55%,#fdecf7);
  border:1px solid rgba(79,70,229,.18);box-shadow:var(--shadow-sm);
}
.score-left{display:flex;align-items:baseline;gap:14px}
.score-num{font-size:38px;font-weight:800;letter-spacing:-1px;color:#312e81;line-height:1}
.score-num span{font-size:16px;font-weight:600;color:var(--muted);margin-left:2px}
.score-label{margin:0;font-size:14px;color:var(--muted)}
.score-right{display:flex;flex-direction:column;gap:2px}
.score-stars{font-size:20px;letter-spacing:3px;color:#f59e0b;line-height:1.2}
.score-note{margin:0;font-size:13.5px;color:var(--ink-2);font-weight:600}
.table-wrap{
  overflow-x:auto;border-radius:18px;border:1px solid var(--line);
  background:#fff;box-shadow:var(--shadow-sm);
}
table{width:100%;border-collapse:collapse;min-width:660px;font-size:14.5px}
thead th{
  padding:14px 16px;text-align:left;white-space:nowrap;font-weight:700;color:#312e81;
  background:linear-gradient(120deg,#eef0ff,#e8fbff);
  border-bottom:1px solid var(--line);
}
tbody td{padding:14px 16px;border-bottom:1px solid var(--line);color:var(--ink-2);vertical-align:top}
tbody tr:last-child td{border-bottom:0}
tbody tr{transition:background-color .25s ease}
tbody tr:hover{background:#f8f9ff}
td.strong{color:var(--ink);font-weight:600}
.pill-yes,.pill-mid,.pill-no{
  display:inline-block;padding:2px 10px;border-radius:999px;font-size:12.5px;font-weight:600;
}
.pill-yes{background:rgba(16,185,129,.12);color:#047857}
.pill-mid{background:rgba(245,158,11,.14);color:#b45309}
.pill-no{background:rgba(148,163,184,.18);color:#475569}
.note-text{margin:14px 0 0;font-size:13px;color:var(--muted)}
.need-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.need-btn{
  width:100%;text-align:left;font-family:inherit;cursor:pointer;
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;
  box-shadow:var(--shadow-sm);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease,background-color .28s ease;
}
.need-btn:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(79,70,229,.42);background:linear-gradient(160deg,#fff,#f4f5ff)}
.need-btn strong{display:block;font-size:15px;color:var(--ink);margin-bottom:4px}
.need-btn span{font-size:13px;color:var(--muted)}
.help-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.help-link{
  display:block;text-decoration:none;padding:20px;border-radius:16px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.help-link:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(79,70,229,.42)}
.help-link b{display:block;font-size:15px;color:var(--ink);margin-bottom:4px}
.help-link span{font-size:13px;color:var(--muted)}
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  box-shadow:var(--shadow-sm);transition:border-color .28s ease,box-shadow .28s ease;
}
.faq-item.open{border-color:rgba(79,70,229,.35);box-shadow:0 14px 32px rgba(31,41,120,.12)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 18px;background:none;border:0;cursor:pointer;font-family:inherit;
  font-size:15.5px;font-weight:600;color:var(--ink);text-align:left;
}
.faq-q .chev{
  width:24px;height:24px;flex-shrink:0;border-radius:50%;display:grid;place-items:center;
  background:rgba(79,70,229,.10);color:#4338ca;font-size:12px;
  transition:transform .3s ease,background-color .3s ease;
}
.faq-item.open .chev{transform:rotate(180deg);background:rgba(79,70,229,.2)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .32s ease}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a .inner{overflow:hidden}
.faq-a p{margin:0;padding:0 18px 18px;font-size:14.5px;color:var(--muted);line-height:1.8}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.review-card{
  display:flex;flex-direction:column;justify-content:space-between;
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;
  box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.review-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(79,70,229,.3)}
.review-quote{margin:0 0 16px;font-size:14.5px;line-height:1.8;color:var(--ink-2)}
.review-meta{display:flex;flex-direction:column;gap:2px;padding-top:12px;border-top:1px dashed var(--line)}
.review-name{font-size:14px;font-weight:700;color:var(--ink)}
.review-role{font-size:13px;color:var(--muted)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.news-card{
  display:flex;flex-direction:column;text-decoration:none;
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;
  box-shadow:var(--shadow-sm);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(79,70,229,.3)}
.news-tag{
  align-self:flex-start;padding:3px 11px;border-radius:999px;margin-bottom:12px;
  background:rgba(79,70,229,.10);color:#4338ca;font-size:12.5px;font-weight:600;
}
.news-card h3{margin:0 0 8px;font-size:16px;color:var(--ink)}
.news-card p{margin:0 0 14px;font-size:13.5px;line-height:1.7;color:var(--muted)}
.news-more{margin-top:auto;font-size:13.5px;font-weight:600;color:#4338ca}
.contact-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:22px;align-items:start}
.panel{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;
  box-shadow:var(--shadow-sm);
}
.panel h3{margin:0 0 6px;font-size:18px}
.panel .sub{margin:0 0 20px;font-size:13.5px;color:var(--muted)}
.form{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;font-weight:600;color:var(--ink-2)}
.field input,.field select,.field textarea{
  width:100%;padding:11px 13px;border-radius:11px;font-size:15px;font-family:inherit;
  color:var(--ink);background:#fbfbff;border:1px solid rgba(24,32,90,.14);
  transition:border-color .25s ease,box-shadow .25s ease,background-color .25s ease;
}
.field textarea{resize:vertical;min-height:104px}
.field input::placeholder,.field textarea::placeholder{color:#9aa0bd}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:rgba(79,70,229,.55);
  box-shadow:0 0 0 4px rgba(79,70,229,.12);
}
.form .btn{grid-column:1/-1;width:100%;margin-top:4px}
.info-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.info-list li{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--ink-2)}
.info-list b{display:block;font-size:13px;color:var(--muted);font-weight:600;margin-bottom:1px}
.info-list a{color:#4338ca;text-decoration:none;border-bottom:1px dashed rgba(67,56,202,.4)}
.info-list a:hover{color:var(--pink);border-color:rgba(236,72,153,.5)}
.qr-box{
  margin-top:20px;padding:16px;border-radius:16px;text-align:center;
  background:linear-gradient(160deg,#f4f5ff,#eefbff);border:1px solid rgba(79,70,229,.16);
}
.qr-box img{width:132px;height:auto;display:block;margin:0 auto 10px;border-radius:10px;background:#fff;padding:6px}
.qr-box p{margin:0;font-size:13px;color:var(--ink-2)}
.join-wrap{
  display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;
  padding:30px;border-radius:22px;
  background:linear-gradient(120deg,#eef1ff,#e9fbff 50%,#fdecf7);
  border:1px solid rgba(79,70,229,.18);box-shadow:var(--shadow-sm);
}
.join-wrap h2{margin:0 0 10px;font-size:clamp(21px,2.4vw,27px)}
.join-wrap p{margin:0 0 14px;font-size:14.5px;color:var(--ink-2)}
.join-list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px 10px}
.join-list li{
  padding:6px 14px;border-radius:999px;background:#fff;border:1px solid rgba(79,70,229,.18);
  font-size:13px;color:var(--ink-2);
}
.site-footer{
  margin-top:24px;padding:40px 0 22px;
  background:linear-gradient(180deg,rgba(238,240,255,.75),#e7eaff);
  border-top:1px solid rgba(79,70,229,.16);
  color:#3b3f66;
}
.footer-top{display:grid;grid-template-columns:250px 1fr;gap:28px;align-items:start}
.footer-name{margin:0 0 4px;font-size:16px;font-weight:800;color:#1b2050}
.footer-desc{margin:0 0 10px;font-size:13.5px;color:#4b5170}
.footer-mail{display:inline-block;font-size:13.5px;color:#4338ca;text-decoration:none;border-bottom:1px dashed rgba(67,56,202,.45)}
.footer-mail:hover{color:#ec4899;border-color:rgba(236,72,153,.5)}
.footer-title{margin:0 0 12px;font-size:13.5px;font-weight:700;color:#2a3157}
.friend-links{list-style:none;display:flex;flex-wrap:wrap;gap:10px;margin:0;padding:0}
.friend-links a{
  display:inline-block;padding:6px 13px;border-radius:999px;font-size:13px;
  background:#fff;border:1px solid rgba(79,70,229,.16);color:#3b3f66;text-decoration:none;
  transition:color .25s ease,border-color .25s ease,transform .25s ease;
}
.friend-links a:hover{color:#4338ca;border-color:rgba(79,70,229,.5);transform:translateY(-2px)}
.footer-bottom{
  margin-top:26px;padding-top:16px;border-top:1px solid rgba(79,70,229,.16);
  font-size:13px;color:#4b5170;text-align:center;
}
.float-tools{position:fixed;right:18px;bottom:22px;z-index:80;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.float-btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:52px;height:52px;padding:0 14px;border-radius:16px;border:0;cursor:pointer;
  font-family:inherit;font-size:14px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,#4f46e5,#06b6d4);
  box-shadow:0 14px 30px rgba(79,70,229,.32);
  transition:transform .25s ease,box-shadow .25s ease;
}
.float-btn:hover{transform:translateY(-3px);box-shadow:0 20px 38px rgba(79,70,229,.4)}
.back-top{background:linear-gradient(135deg,#8b5cf6,#ec4899);font-size:18px;letter-spacing:0}
.float-box{
  width:200px;padding:16px;border-radius:16px;background:#fff;
  border:1px solid rgba(79,70,229,.2);box-shadow:0 22px 46px rgba(31,41,120,.2);
  text-align:center;
}
.float-box[hidden]{display:none}
.float-box p{margin:0;font-size:12.5px;color:var(--ink-2)}
.float-box img{width:140px;height:auto;display:block;margin:0 auto 10px;border-radius:10px;border:1px solid var(--line)}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-visible{opacity:1;transform:none}
@media (max-width:1080px){
  .nav{
    position:absolute;top:calc(100% + 1px);left:0;right:0;display:none;
    background:#fff;border:1px solid var(--line);border-bottom-left-radius:16px;border-bottom-right-radius:16px;
    box-shadow:0 22px 44px rgba(31,41,120,.16);padding:10px 20px 16px;
  }
  .nav.open{display:block;animation:dropIn .25s ease}
  @keyframes dropIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
  .nav-links{flex-direction:column;align-items:stretch;justify-content:flex-start}
  .nav-links a{padding:11px 6px;border-bottom:1px solid var(--line);border-radius:0}
  .nav-links a::after{display:none}
  .nav-links li:last-child a{border-bottom:0}
  .nav-toggle{display:inline-flex}
}
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:26px}
  .hero{padding:40px 0 18px}
  .about-grid,.contact-grid,.footer-top{grid-template-columns:1fr}
  .grid-3,.case-grid,.review-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
  .need-grid,.help-grid{grid-template-columns:repeat(2,1fr)}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .join-wrap{grid-template-columns:1fr}
  .section{padding:48px 0}
}
@media (max-width:680px){
  .container{padding-inline:16px}
  .brand-name{font-size:15px}
  .ai-page-logo{width:34px}
  .btn-nav{padding:8px 14px;font-size:13px}
  .stat-strip{grid-template-columns:repeat(2,1fr);padding:18px;margin-top:32px}
  .grid-3,.grid-2,.case-grid,.review-grid,.news-grid,.need-grid,.help-grid,.steps-grid{grid-template-columns:1fr}
  .form{grid-template-columns:1fr}
  .score-banner{padding:18px}
  .score-num{font-size:32px}
  .panel{padding:20px}
  .float-tools{right:12px;bottom:14px}
  .float-btn{min-width:46px;height:46px;font-size:13px}
  .float-box{width:180px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .hero-panel::before{animation:none}
  .card:hover,.case-item:hover,.review-card:hover,.news-card:hover,.need-btn:hover,.help-link:hover,.tag-cloud li:hover,.layer-list li:hover,.about-list li:hover{transform:none}
}