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.ad-guide{max-width:1200px;margin:auto;padding:0 20px}.ad-breadcrumb{padding:18px 0;font-size:14px;color:#71819a}.ad-breadcrumb a{color:inherit;text-decoration:none}.ad-guide>header{padding:32px;border:0;border-radius:16px;display:grid;grid-template-columns:1.6fr 1fr;align-items:center;gap:30px}.ad-guide h1{font-size:44px;margin-bottom:16px}.ad-guide article{max-width:none;padding:0 0 28px}.ad-guide h2{font-size:29px;margin:24px 0 14px}.ad-guide h3{font-size:19px;margin:0 0 9px}.ad-guide article p{font-size:16px;line-height:1.4;margin:0}.ad-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.ad-card{display:flex;align-items:center;gap:24px;position:relative;border:1px solid #dceafa;border-radius:12px;padding:24px;min-width:0}.ad-number,.ad-notes b{display:grid;place-items:center;border-radius:50%;background:#1387ff;color:white;width:36px;height:36px;flex:none;font-size:14px}.ad-number{position:absolute;left:15px;top:15px}.ad-icon{flex:none;position:relative;display:grid;place-items:center;width:108px;height:108px;background:linear-gradient(145deg,#edf9ff,#dcefff);border-radius:50%;font-size:66px;color:#1989ff;font-family:Arial}.ad-icon span{position:absolute;right:-4px;bottom:8px;border-radius:50%;width:38px;height:38px;display:grid;place-items:center;background:#35c57c;color:white;font-size:28px}.ad-bad span{background:#ff6658}.ad-example-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:40px}.ad-letter{border:1px solid #cfdfef;border-radius:9px;overflow:hidden;box-shadow:0 4px 14px #27557b10}.ad-window{background:#e3edf5;padding:10px 14px;display:flex;gap:8px}.ad-window i{width:11px;height:11px;border-radius:50%;background:#ff7567}.ad-window i:nth-child(2){background:#ffcb65}.ad-window i:nth-child(3){background:#42c98c}.ad-letter>div:last-child{padding:20px 28px}.ad-letter p+p{margin-top:16px}.ad-notes{display:flex;flex-direction:column;justify-content:space-around;gap:16px}.ad-notes section{display:flex;gap:18px;align-items:center;background:#f0f8ff;border-radius:12px;padding:16px}.ad-notes h3{font-size:18px}.ad-tip{display:flex;align-items:center;gap:28px;background:#eff8ff;border-radius:12px;margin-top:14px;padding:14px 28px}.ad-checks{display:grid;grid-template-columns:1fr 1fr;gap:12px 30px;list-style:none;padding:22px!important;border:1px solid #dceafa;border-radius:12px;margin:0}.ad-guide .ad-checks li{font-size:16px;line-height:1.4;margin:0;padding-left:32px;position:relative}.ad-checks li:before{content:'✓';position:absolute;left:0;top:0;border-radius:50%;background:#35c57c;color:white;width:22px;height:22px;text-align:center}.ad-guide .email-guide-cta{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:24px;border:0;margin:14px 0 0}.ad-guide .email-guide-cta h2{font-size:23px;margin:0 0 8px}.ad-guide .email-guide-cta a{white-space:nowrap}.ad-envelope{width:240px;height:160px;background:linear-gradient(145deg,#44b9ff,#0876ed);border-radius:12px;margin:40px auto 0;position:relative;box-shadow:0 15px 25px #0987ef28}.ad-envelope:before{content:'';position:absolute;inset:-60px 28px 25px;background:repeating-linear-gradient(0deg,white 0 17px,#b8dfff 18px 22px,white 23px 30px);border:18px solid white;border-radius:8px;transform:rotate(-5deg)}.ad-envelope:after{content:'';position:absolute;inset:0;background:linear-gradient(145deg,#69ccff,#0073ed);clip-path:polygon(0 0,50% 57%,100% 0,100% 100%,0 100%);border-radius:12px}.ad-envelope span{position:absolute;z-index:2;right:5px;top:-55px;background:#35c57c;color:white;border:5px solid #edfbff;border-radius:50%;width:58px;height:58px;text-align:center;line-height:58px;font-size:40px}@media(max-width:800px){.ad-guide>header{grid-template-columns:1fr}.ad-envelope{display:none}.ad-guide h1{font-size:36px}.ad-grid,.ad-example-grid{grid-template-columns:1fr}.ad-notes{display:grid;grid-template-columns:1fr 1fr;gap:12px}.ad-checks{grid-template-columns:1fr}.ad-guide .email-guide-cta{align-items:flex-start;flex-direction:column}}@media(max-width:480px){.ad-guide{padding:0 16px}.ad-guide>header{padding:24px}.ad-guide h1{font-size:30px}.ad-guide h2{font-size:25px}.ad-card{padding:22px 18px;gap:16px}.ad-icon{width:70px;height:80px;font-size:46px}.ad-number{width:26px;height:26px;font-size:11px;left:8px;top:8px}.ad-notes{grid-template-columns:1fr}.ad-tip{padding:20px;gap:16px}.ad-tip .ad-icon{display:none}.ad-letter>div:last-child{padding:20px}}
/* Reference layout, scoped to the article only. */
.ad-guide{max-width:1200px;box-sizing:border-box;color:#070f43}.ad-guide>header{grid-template-columns:1.65fr 1fr;padding:28px 34px;gap:8px;min-height:240px;box-sizing:border-box}.ad-guide h1{font-size:46px;letter-spacing:-1.2px;line-height:1.02;color:#070b3c;font-weight:750}.ad-guide .email-guide-intro{font-size:20px;line-height:1.3;font-weight:500;color:#556486}.ad-envelope{width:100%;height:auto;margin:0;background:none;box-shadow:none;border-radius:0}.ad-envelope:before,.ad-envelope:after{display:none}.ad-envelope svg{display:block;width:100%;height:auto}.ad-guide h2{font-size:30px;letter-spacing:-.7px;color:#070b3c;margin:20px 0 10px}.ad-guide h3{font-size:18px;line-height:1.3;color:#070f43}.ad-card{min-height:132px;box-sizing:border-box;padding:14px 22px 14px 50px;gap:20px;border-radius:9px;background:linear-gradient(135deg,#fff,#fbfdff)}.ad-icon{width:122px;height:112px;background:none;border-radius:0}.ad-icon svg{width:100%;height:100%;display:block}.ad-number{left:15px;top:14px;z-index:1}.ad-guide article p{color:#576583;line-height:1.4}.ad-grid{gap:10px}.ad-example-grid{grid-template-columns:1.65fr 1fr;gap:66px}.ad-notes section{position:relative;padding:14px 14px 14px 46px;margin-left:0}.ad-notes b{position:absolute;left:-20px;width:42px;height:42px;border:4px solid white}.ad-notes section:before{content:'';position:absolute;right:100%;width:66px;height:22px;top:50%;border-top:1px solid #38a3ff;border-right:1px solid #38a3ff;border-radius:0 7px 0 0}.ad-notes section:after{content:'';position:absolute;left:-70px;top:calc(50% - 3px);width:7px;height:7px;background:#259bff;border-radius:50%}.ad-guide .ad-letter p{font-size:16px}.ad-tip{padding:8px 22px;gap:30px}.ad-tip .ad-icon{width:180px;height:100px}.ad-checks{column-gap:40px;padding:18px 28px!important}.ad-guide .email-guide-cta{padding:8px 20px;gap:24px}.ad-guide .email-guide-cta h2{font-size:22px;letter-spacing:-.4px}.ad-cta-art{width:170px;flex:none}.ad-cta-art svg{width:100%;height:100px;display:block}.ad-guide .email-guide-cta>div:not(.ad-cta-art){flex:1}.ad-guide .email-guide-cta a{font-size:16px;padding:14px 23px;border-radius:5px}.ad-guide .ad-grid:nth-of-type(3) .ad-card{padding-left:24px}@media(max-width:900px){.ad-guide h1{font-size:38px}.ad-card{gap:14px;padding-right:15px}.ad-icon{width:85px}.ad-guide .email-guide-cta{flex-wrap:wrap}.ad-cta-art{width:110px}}@media(max-width:800px){.ad-guide>header{grid-template-columns:1fr}.ad-envelope{display:block;max-width:280px;margin:auto}.ad-example-grid{grid-template-columns:1fr;gap:16px}.ad-notes{grid-template-columns:1fr 1fr;gap:12px;padding-left:20px}.ad-notes section:before,.ad-notes section:after{display:none}.ad-guide .email-guide-cta{flex-direction:row;align-items:center}.ad-guide .email-guide-cta a{margin-left:0}.ad-guide h2{font-size:27px}}@media(max-width:480px){.ad-guide>header{padding:24px 22px}.ad-guide h1{font-size:32px}.ad-guide .email-guide-intro{font-size:17px}.ad-guide h2{font-size:25px}.ad-notes{grid-template-columns:1fr}.ad-card{padding-left:36px}.ad-icon{width:80px;height:90px}.ad-tip{padding:18px}.ad-cta-art{display:none}.ad-guide .email-guide-cta{padding:22px;display:block}.ad-guide .email-guide-cta a{margin-top:16px;white-space:normal}.ad-checks{padding:18px!important}}