*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.72;
  color:#1b1526;
  background-color:#fff8f3;
  background-image:
    radial-gradient(760px 460px at 6% -6%, rgba(255,61,127,.16), transparent 62%),
    radial-gradient(700px 420px at 98% 0%, rgba(124,92,255,.16), transparent 60%),
    radial-gradient(820px 540px at 50% 106%, rgba(18,200,216,.12), transparent 64%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;border-style:none}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none;margin:0;padding:0}
p{margin:0}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.32;letter-spacing:-.015em;color:#1b1526}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,250,245,.9);-webkit-backdrop-filter:saturate(180%) blur(14px);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid rgba(27,21,38,.08)}
.nav-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:70px}
.brand{display:flex;align-items:center;flex-shrink:0}
.ai-page-logo{display:block;height:36px!important;width:auto!important;max-width:150px}
.nav-links{display:flex;align-items:center;gap:0}
.nav-links a{display:block;padding:8px 10px;font-size:13.5px;font-weight:600;color:#3a3348;border-radius:10px;white-space:nowrap;transition:color .2s ease,background .2s ease}
.nav-links a:hover{color:#ff3d7f;background:rgba(255,61,127,.09)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid rgba(27,21,38,.12);background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#1b1526;transition:transform .25s ease,opacity .25s ease}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:999px;font-size:15px;font-weight:700;transition:transform .25s ease,box-shadow .25s ease,background .25s ease;white-space:nowrap}
.btn-primary{background:linear-gradient(120deg,#ff3d7f,#ff7a3d);color:#fff;box-shadow:0 10px 24px rgba(255,61,127,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(255,61,127,.42)}
.btn-violet{background:linear-gradient(120deg,#7c5cff,#12c8d8);color:#fff;box-shadow:0 10px 24px rgba(124,92,255,.3)}
.btn-violet:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(124,92,255,.4)}
.btn-ghost{background:#fff;color:#1b1526;border:1.5px solid rgba(124,92,255,.3)}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(255,61,127,.5);box-shadow:0 12px 26px rgba(124,92,255,.16)}
.btn-sm{padding:9px 18px;font-size:13.5px}

/* ---------- section base ---------- */
.section{padding:70px 0;position:relative}
.section-head{max-width:760px;margin:0 auto 40px;text-align:center}
.eyebrow{display:inline-flex;align-items:center;padding:6px 16px;border-radius:999px;font-size:13px;font-weight:700;letter-spacing:.04em;color:#c2175b;background:linear-gradient(120deg,rgba(255,61,127,.14),rgba(124,92,255,.14));border:1px solid rgba(255,61,127,.22)}
.section-title{font-size:clamp(23px,3.2vw,34px);margin:16px 0 12px}
.section-desc{color:#5b5470;font-size:15.5px}
.title-rule{width:64px;height:5px;border-radius:999px;margin:20px auto 0;background:linear-gradient(90deg,#ff3d7f,#ffc53d,#12c8d8)}

/* ---------- hero ---------- */
.hero{padding:66px 0 58px;position:relative;overflow:hidden}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(64px);opacity:.55;pointer-events:none}
.hero::before{width:320px;height:320px;background:#ffd0e2;top:-90px;right:-70px}
.hero::after{width:270px;height:270px;background:#d4e7ff;bottom:-100px;left:-90px}
.hero-inner{position:relative;max-width:880px}
.hero h1{font-size:clamp(28px,4.6vw,46px);margin:20px 0 18px;letter-spacing:-.02em}
.hero-lead{font-size:16.5px;color:#4a4258;max-width:720px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:38px;max-width:840px}
.hero-metrics li{background:#fff;border:1px solid rgba(27,21,38,.08);border-radius:16px;padding:16px 18px;box-shadow:0 10px 24px rgba(93,63,140,.08);border-top:3px solid #ff3d7f;animation:floaty 6s ease-in-out infinite}
.hero-metrics li:nth-child(2){border-top-color:#7c5cff;animation-delay:.5s}
.hero-metrics li:nth-child(3){border-top-color:#12c8d8;animation-delay:1s}
.hero-metrics li:nth-child(4){border-top-color:#ffc53d;animation-delay:1.5s}
.hero-metrics strong{display:block;font-size:24px;line-height:1.2;color:#1b1526;font-weight:800}
.hero-metrics span{font-size:13px;color:#6f6880}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}

/* ---------- grid & cards ---------- */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{background:#fff;border:1px solid rgba(27,21,38,.08);border-radius:20px;padding:26px 24px;box-shadow:0 10px 26px rgba(93,63,140,.07);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}
.card:hover{transform:translateY(-4px);box-shadow:0 20px 40px rgba(93,63,140,.14);border-color:rgba(255,61,127,.28)}
.card h3{font-size:17.5px;margin-bottom:10px}
.card p{font-size:14.5px;color:#5b5470}
.icon-box{width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;background:linear-gradient(135deg,#ff3d7f,#ff7a3d)}
.card:nth-child(2n) .icon-box{background:linear-gradient(135deg,#7c5cff,#12c8d8)}
.card:nth-child(3n) .icon-box{background:linear-gradient(135deg,#12c8d8,#22c99a)}
.card:nth-child(5n) .icon-box{background:linear-gradient(135deg,#ffc53d,#ff7a3d)}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.card-tags span{font-size:12px;font-weight:600;color:#5b5470;background:#f6f2ff;border:1px solid rgba(124,92,255,.16);padding:3px 10px;border-radius:999px}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:start}
.about-text h3{font-size:19px;margin-bottom:14px}
.about-text>p{font-size:15px;color:#5b5470;margin-bottom:22px}
.feature-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.feature-list li{display:flex;gap:12px;background:#fff;border:1px solid rgba(27,21,38,.08);border-radius:14px;padding:14px 16px;box-shadow:0 6px 18px rgba(93,63,140,.06);transition:transform .28s ease,box-shadow .28s ease}
.feature-list li:hover{transform:translateY(-3px);box-shadow:0 14px 28px rgba(93,63,140,.12)}
.dot{flex-shrink:0;width:9px;height:9px;border-radius:50%;margin-top:8px;background:linear-gradient(135deg,#ff3d7f,#7c5cff)}
.feature-list strong{display:block;font-size:14.5px;margin-bottom:2px}
.feature-list p{font-size:13px;color:#6f6880;line-height:1.55}
.media-frame{border-radius:20px;padding:8px;background:linear-gradient(135deg,rgba(255,61,127,.14),rgba(124,92,255,.14),rgba(18,200,216,.14));border:1px solid rgba(27,21,38,.08);box-shadow:0 18px 40px rgba(93,63,140,.12)}
.media-frame img{display:block;width:100%;height:auto;border-radius:14px}

/* ---------- tag cloud ---------- */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.tag-cloud li{font-size:13.5px;font-weight:600;color:#3a3348;background:#fff;border:1px solid rgba(27,21,38,.1);border-radius:999px;padding:8px 16px;transition:transform .25s ease,box-shadow .25s ease,color .25s ease,border-color .25s ease}
.tag-cloud li:hover{transform:translateY(-3px);color:#c2175b;border-color:rgba(255,61,127,.4);box-shadow:0 10px 22px rgba(255,61,127,.16)}
.tag-cloud li.hot{background:linear-gradient(120deg,rgba(255,61,127,.12),rgba(255,197,61,.16));border-color:rgba(255,61,127,.28);color:#c2175b}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.step{background:#fff;border:1px solid rgba(27,21,38,.08);border-radius:18px;padding:24px 20px;box-shadow:0 10px 26px rgba(93,63,140,.07);transition:transform .3s ease,box-shadow .3s ease}
.step:hover{transform:translateY(-4px);box-shadow:0 18px 36px rgba(93,63,140,.13)}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:14px;font-size:15px;font-weight:800;color:#fff;background:linear-gradient(135deg,#ff3d7f,#7c5cff);margin-bottom:14px}
.step h3{font-size:16px;margin-bottom:8px}
.step p{font-size:13.5px;color:#5b5470}

/* ---------- cases ---------- */
.case-card{background:#fff;border:1px solid rgba(27,21,38,.08);border-radius:20px;padding:12px;box-shadow:0 10px 26px rgba(93,63,140,.07);transition:transform .3s ease,box-shadow .3s ease}
.case-card:hover{transform:translateY(-4px);box-shadow:0 20px 40px rgba(93,63,140,.14)}
.case-media{aspect-ratio:4/3;border-radius:14px;overflow:hidden;background:linear-gradient(135deg,#ffe6f0,#e9e4ff 55%,#dff7fa);display:flex;align-items:center;justify-content:center}
.case-media img{width:100%;height:100%;object-fit:contain;display:block}
.case-body{padding:16px 10px 8px}
.case-body h3{font-size:16.5px;margin-bottom:6px}
.case-body p{font-size:13.5px;color:#5b5470}

/* ---------- review ---------- */
.review-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:26px;align-items:start}
.score-card{background:linear-gradient(150deg,#fff,#fdf2f8);border:1px solid rgba(255,61,127,.24);border-radius:22px;padding:30px 26px;box-shadow:0 18px 40px rgba(255,61,127,.14);text-align:center}
.score-num{font-size:52px;font-weight:800;line-height:1;color:#ff3d7f;letter-spacing:-.03em}
.score-num small{font-size:18px;color:#6f6880;font-weight:700}
.stars{margin:12px 0 10px;font-size:20px;letter-spacing:4px;color:#ffb020}
.score-label{font-size:14px;color:#5b5470}
.score-badge{display:inline-flex;align-items:center;gap:6px;margin-top:16px;padding:6px 16px;border-radius:999px;font-size:13px;font-weight:700;color:#fff;background:linear-gradient(120deg,#ff3d7f,#7c5cff)}
.review-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.point{background:#fff;border:1px solid rgba(27,21,38,.08);border-radius:14px;padding:14px 16px;font-size:13.5px;color:#3a3348;font-weight:600;display:flex;gap:10px;align-items:flex-start;box-shadow:0 6px 18px rgba(93,63,140,.06);transition:transform .28s ease,box-shadow .28s ease}
.point:hover{transform:translateY(-3px);box-shadow:0 14px 28px rgba(93,63,140,.12)}
.point::before{content:"";flex-shrink:0;width:8px;height:8px;border-radius:50%;margin-top:8px;background:linear-gradient(135deg,#12c8d8,#7c5cff)}

/* ---------- table ---------- */
.table-wrap{overflow-x:auto;border-radius:18px;border:1px solid rgba(27,21,38,.09);background:#fff;box-shadow:0 14px 34px rgba(93,63,140,.09)}
table{width:100%;border-collapse:collapse;min-width:680px;font-size:14px}
thead th{background:linear-gradient(120deg,#fff2f7,#f3f0ff);color:#1b1526;font-weight:800;text-align:left;padding:15px 18px;border-bottom:1px solid rgba(27,21,38,.09);white-space:nowrap}
tbody td{padding:14px 18px;border-bottom:1px solid rgba(27,21,38,.06);color:#4a4258;vertical-align:top}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:#fdf9ff}
td.hl{color:#c2175b;font-weight:700}
.table-note{font-size:13px;color:#6f6880;margin-top:14px;text-align:center}

/* ---------- comments ---------- */
.comment{background:#fff;border:1px solid rgba(27,21,38,.08);border-radius:20px;padding:24px;box-shadow:0 10px 26px rgba(93,63,140,.07);transition:transform .3s ease,box-shadow .3s ease;display:flex;flex-direction:column;gap:14px}
.comment:hover{transform:translateY(-4px);box-shadow:0 20px 40px rgba(93,63,140,.14)}
.comment-head{display:flex;align-items:center;gap:12px}
.avatar{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;color:#fff;background:linear-gradient(135deg,#ff3d7f,#7c5cff);flex-shrink:0}
.comment:nth-child(2n) .avatar{background:linear-gradient(135deg,#12c8d8,#22c99a)}
.comment:nth-child(3n) .avatar{background:linear-gradient(135deg,#ffc53d,#ff7a3d)}
.comment-head strong{display:block;font-size:14.5px}
.comment-head span{font-size:12.5px;color:#6f6880}
.comment p{font-size:14px;color:#4a4258}
.comment .stars{font-size:14px;letter-spacing:2px;margin:0;color:#ffb020}

/* ---------- form ---------- */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:26px;align-items:start}
.form-card{background:#fff;border:1px solid rgba(27,21,38,.08);border-radius:22px;padding:30px 26px;box-shadow:0 18px 40px rgba(93,63,140,.1)}
.form-card>h3{font-size:18px;margin-bottom:6px}
.form-card>p{font-size:13.5px;color:#6f6880;margin-bottom:22px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;font-weight:700;color:#3a3348}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border:1.5px solid rgba(27,21,38,.14);border-radius:12px;background:#fdfbfa;font-size:14.5px;color:#1b1526;font-family:inherit;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:#ff3d7f;background:#fff;box-shadow:0 0 0 4px rgba(255,61,127,.12)}
.field textarea{min-height:120px;resize:vertical}
.form-submit{margin-top:20px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.form-submit .btn{padding:13px 34px}
.form-tip{font-size:12.5px;color:#6f6880}
.info-card{background:linear-gradient(150deg,#fff,#f7f3ff);border:1px solid rgba(124,92,255,.2);border-radius:22px;padding:28px 24px;box-shadow:0 18px 40px rgba(124,92,255,.12)}
.info-card h3{font-size:17px;margin-bottom:18px}
.info-list li{display:flex;gap:10px;font-size:14px;color:#3a3348;padding:9px 0;border-bottom:1px dashed rgba(27,21,38,.1)}
.info-list li:last-child{border-bottom:none}
.info-list span{color:#6f6880;flex-shrink:0;min-width:76px}
.wechat-box{margin-top:20px;text-align:center;background:#fff;border-radius:16px;padding:16px;border:1px solid rgba(27,21,38,.08)}
.wechat-box img{width:150px;height:auto;display:block;margin:0 auto 8px;border-radius:10px}
.wechat-box p{font-size:13px;color:#6f6880}

/* ---------- faq ---------- */
.faq-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid rgba(27,21,38,.09);border-radius:16px;box-shadow:0 8px 22px rgba(93,63,140,.06);overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease}
.faq-item.open{border-color:rgba(255,61,127,.34);box-shadow:0 14px 30px rgba(255,61,127,.12)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;font-size:15px;font-weight:700;color:#1b1526;text-align:left;transition:color .2s ease}
.faq-q:hover{color:#c2175b}
.faq-icon{position:relative;width:16px;height:16px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:#ff3d7f;border-radius:2px;transition:transform .3s ease}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.open .faq-icon::after{transform:rotate(90deg)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{padding:0 22px 20px;font-size:14px;color:#5b5470}

/* ---------- articles ---------- */
.article-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.article-list a{display:flex;align-items:flex-start;gap:12px;background:#fff;border:1px solid rgba(27,21,38,.08);border-radius:14px;padding:16px 18px;font-size:14.5px;font-weight:600;color:#3a3348;box-shadow:0 6px 18px rgba(93,63,140,.06);transition:transform .28s ease,box-shadow .28s ease,color .28s ease,border-color .28s ease}
.article-list a:hover{transform:translateY(-3px);color:#c2175b;border-color:rgba(255,61,127,.34);box-shadow:0 14px 28px rgba(255,61,127,.14)}
.article-list a::before{content:"·";flex-shrink:0;font-size:22px;line-height:1;color:#7c5cff;margin-top:1px}

/* ---------- cta band ---------- */
.cta-band{border-radius:24px;padding:38px 34px;background:linear-gradient(120deg,rgba(255,61,127,.12),rgba(124,92,255,.12) 50%,rgba(18,200,216,.12));border:1px solid rgba(124,92,255,.2);display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;box-shadow:0 18px 40px rgba(124,92,255,.1)}
.cta-band h2{font-size:clamp(20px,2.6vw,27px);margin-bottom:8px}
.cta-band p{font-size:14.5px;color:#5b5470;max-width:640px}

/* ---------- footer ---------- */
.site-footer{background:#fff6f1;border-top:1px solid rgba(27,21,38,.09);padding:46px 0 26px;margin-top:10px}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:30px;align-items:start}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.footer-brand img{height:32px;width:auto;display:block}
.footer-desc{font-size:13.5px;color:#5b5470;max-width:360px}
.footer-col h4{font-size:14.5px;margin-bottom:12px;color:#1b1526}
.footer-col ul{display:flex;flex-direction:column;gap:8px}
.footer-col a,.footer-col li{font-size:13.5px;color:#4a4258;transition:color .2s ease}
.footer-col a:hover{color:#c2175b}
.friend-links{display:flex;flex-wrap:wrap;gap:8px 14px}
.friend-links a{font-size:13px;color:#4a4258;padding:4px 10px;border-radius:999px;background:#fff;border:1px solid rgba(27,21,38,.09);transition:color .2s ease,border-color .2s ease,transform .2s ease}
.friend-links a:hover{color:#c2175b;border-color:rgba(255,61,127,.4);transform:translateY(-2px)}
.copyright{margin-top:28px;padding-top:18px;border-top:1px solid rgba(27,21,38,.1);display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;font-size:12.5px;color:#6f6880}

/* ---------- floating ---------- */
.floating{position:fixed;right:18px;bottom:22px;z-index:120;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.float-btn{width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 12px 26px rgba(255,61,127,.34);background:linear-gradient(135deg,#ff3d7f,#7c5cff);color:#fff;font-size:13px;font-weight:800;transition:transform .25s ease,box-shadow .25s ease}
.float-btn:hover{transform:translateY(-3px) scale(1.05);box-shadow:0 18px 34px rgba(255,61,127,.44)}
.float-btn.back{background:#fff;color:#3a3348;border:1px solid rgba(27,21,38,.12);box-shadow:0 10px 24px rgba(93,63,140,.16);font-size:16px}
.service-panel{width:232px;background:#fff;border:1px solid rgba(27,21,38,.1);border-radius:18px;padding:16px;box-shadow:0 22px 44px rgba(93,63,140,.2);display:none;transform-origin:bottom right;animation:panelIn .28s ease}
.service-panel.open{display:block}
@keyframes panelIn{from{opacity:0;transform:scale(.94) translateY(8px)}to{opacity:1;transform:scale(1) translateY(0)}}
.service-panel h4{font-size:14px;margin-bottom:10px;text-align:center}
.service-panel img{width:150px;height:auto;display:block;margin:0 auto 10px;border-radius:10px;border:1px solid rgba(27,21,38,.08)}
.service-panel p{font-size:12.5px;color:#5b5470;text-align:center;line-height:1.6}
.service-panel p strong{color:#1b1526}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .65s ease,transform .65s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .hero-metrics li{animation:none}
  html{scroll-behavior:auto}
}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .nav-toggle{display:flex}
  .nav-links{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;background:#fff;padding:10px 20px 18px;border-bottom:1px solid rgba(27,21,38,.09);box-shadow:0 20px 34px rgba(93,63,140,.14);border-radius:0 0 18px 18px}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 6px;font-size:14.5px;border-radius:10px}
  .about-grid,.review-wrap,.contact-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand-col{grid-column:1/-1}
}
@media (max-width:640px){
  .section{padding:54px 0}
  .hero{padding:48px 0 44px}
  .hero-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-2,.grid-3,.feature-list,.review-points,.article-list{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .cta-band{padding:28px 22px}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn{flex:1 1 auto}
}