/* SASTI Device Store — editorial blog system */

.blog-page{
  --blog-ink:#072c54;
  --blog-copy:#38566f;
  --blog-muted:#4f697d;
  --blog-line:#cbddea;
  --blog-surface:#fbfdff;
  --blog-soft:#edf6fb;
  --blog-blue:#0057b8;
  --blog-green:#0d7437;
  --blog-ease:cubic-bezier(.16,1,.3,1);
  padding-bottom:0;
  background:#f4f8fb;
  color:var(--blog-copy);
}

.blog-page #siteHeader{background:#f4f8fb}
.blog-page .header-nav a.active{background:#e3f0f8;color:var(--brand);font-weight:800}
.blog-page footer{margin-top:0}
.blog-container{width:min(1180px,92vw);margin-inline:auto}
.reading-progress{position:fixed;z-index:2200;top:0;right:0;left:0;height:3px;background:transparent;pointer-events:none}
.reading-progress span{display:block;width:100%;height:100%;background:linear-gradient(90deg,var(--blog-blue),#42b7e5 54%,var(--blog-green));transform:scaleX(0);transform-origin:left center;will-change:transform}

/* ---------- compact panoramic news hero ---------- */
.blog-intro{position:relative;isolation:isolate;min-height:clamp(240px,19vw,290px);overflow:hidden;border-bottom:1px solid #0b6e9c;background:#001b43;color:#eef8ff}
.blog-intro::before{content:"";position:absolute;z-index:-1;inset:0;background:radial-gradient(ellipse 42% 95% at 50% 50%,rgba(0,13,34,.8) 0%,rgba(0,18,44,.56) 56%,rgba(0,25,58,.12) 100%),linear-gradient(90deg,rgba(0,25,58,.16),rgba(0,16,39,.3) 50%,rgba(0,78,68,.12))}
.blog-intro::after{content:"";position:absolute;z-index:3;right:0;bottom:0;left:0;height:3px;background:linear-gradient(90deg,#0057b8 0%,#42b7e5 46%,#19ac55 100%);box-shadow:0 -8px 24px rgba(66,183,229,.18)}
.blog-intro-media{position:absolute;z-index:-2;inset:0;display:block;background:#001b43}
.blog-intro-media img{width:100%;height:100%;object-fit:cover;object-position:center 52%;filter:saturate(1.05) contrast(1.03) brightness(1.02);animation:blogHeroMediaIn 480ms cubic-bezier(.16,1,.3,1) both}
.blog-intro-inner{display:grid;min-height:clamp(240px,19vw,290px);place-items:center;padding-block:1.5rem}
.blog-intro-copy{position:relative;width:100%;padding-top:1rem;text-align:center}
.blog-intro-copy::before{content:"";position:absolute;top:0;left:50%;width:84px;height:3px;transform:translateX(-50%);border-radius:999px;background:linear-gradient(90deg,rgba(66,183,229,0),#42b7e5 28%,#34c66a 72%,rgba(52,198,106,0));box-shadow:0 0 18px rgba(66,183,229,.38)}
.blog-intro h1{margin:0;color:#f5faff;font-size:clamp(2.55rem,4.45vw,4.3rem);font-weight:900;line-height:.98;letter-spacing:.035em;text-indent:.035em;text-shadow:0 3px 22px rgba(0,10,29,.78),0 0 1px rgba(245,250,255,.9);text-wrap:balance;animation:blogHeroCopyIn 420ms 70ms cubic-bezier(.16,1,.3,1) both}
.blog-intro p{max-width:760px;margin:.85rem auto 0;color:#e2f0f8;font-size:clamp(.9rem,1.35vw,1.08rem);font-weight:680;line-height:1.45;letter-spacing:.04em;text-shadow:0 2px 12px rgba(0,10,29,.9);animation:blogHeroCopyIn 420ms 120ms cubic-bezier(.16,1,.3,1) both}
@keyframes blogHeroCopyIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
@keyframes blogHeroMediaIn{from{opacity:.42;transform:scale(1.018)}to{opacity:1;transform:scale(1)}}

/* ---------- compact editorial guide grid ---------- */
.blog-index-main{padding:clamp(3rem,5vw,4.5rem) 0 clamp(3.5rem,6vw,5rem)}
.blog-section-head{display:flex;align-items:end;justify-content:space-between;gap:2rem;margin-bottom:1.5rem}
.blog-section-head span{color:var(--blog-green);font-size:.74rem;font-weight:850;letter-spacing:.16em;text-transform:uppercase}
.blog-section-head h2{margin-top:.3rem;color:var(--blog-ink);font-size:clamp(1.65rem,2.5vw,2.2rem);font-weight:830;line-height:1.12;letter-spacing:-.035em}
.blog-section-head p{max-width:42ch;color:var(--blog-muted);font-size:.92rem;line-height:1.6;text-align:right}
.blog-post-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:1.25rem;align-items:start}
.blog-post-card{min-width:0;overflow:hidden;border:1px solid #c7dbe8;border-radius:14px;background:var(--blog-surface);box-shadow:0 8px 22px rgba(0,43,92,.065);transition:transform .28s var(--blog-ease),border-color .2s linear,box-shadow .28s var(--blog-ease)}
.blog-post-media{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:#dceaf3}
.blog-post-media::after{content:"";position:absolute;inset:auto 0 0;height:28%;background:linear-gradient(180deg,transparent,rgba(0,43,92,.18));pointer-events:none}
.blog-post-media picture,.blog-post-media img{display:block;width:100%;height:100%}
.blog-post-media img{object-fit:cover;object-position:center;transition:transform .5s var(--blog-ease),filter .3s linear}
.blog-post-badge{position:absolute;z-index:2;top:.75rem;left:.75rem;display:inline-flex;min-height:27px;align-items:center;padding:.25rem .58rem;border:1px solid rgba(235,249,255,.68);border-radius:999px;background:rgba(0,43,92,.84);color:#f1f9ff;font-size:.62rem;font-weight:850;letter-spacing:.1em;text-transform:uppercase;box-shadow:0 5px 14px rgba(0,27,63,.18)}
.blog-post-copy{display:flex;min-height:245px;flex-direction:column;padding:1.05rem 1.05rem 1rem}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1rem;margin-bottom:1rem;color:#506a7e;font-size:.7rem;font-weight:760;letter-spacing:.075em;text-transform:uppercase}
.post-category{display:inline-flex;min-height:30px;align-items:center;padding:.25rem .7rem;border-radius:999px;background:#e6f5ec;color:#14733a;font-weight:850}
.blog-post-card .post-meta{gap:.4rem .65rem;margin-bottom:.7rem;font-size:.62rem;letter-spacing:.06em}
.blog-post-card .post-category{min-height:25px;padding:.2rem .55rem}
.blog-post-card h3{display:-webkit-box;overflow:hidden;color:var(--blog-ink);font-size:1.12rem;font-weight:840;line-height:1.34;letter-spacing:-.025em;text-wrap:balance;-webkit-box-orient:vertical;-webkit-line-clamp:3}
.blog-post-card h3 a{transition:color .18s linear}
.blog-post-card h3 a:hover{color:var(--blog-blue)}
.blog-post-copy>p{display:-webkit-box;overflow:hidden;margin-top:.7rem;color:#526d82;font-size:.84rem;line-height:1.6;-webkit-box-orient:vertical;-webkit-line-clamp:3}
.post-link{display:inline-flex;width:max-content;min-height:44px;align-items:center;gap:.55rem;margin-top:auto;padding-top:.7rem;color:var(--blog-blue);font-size:.8rem;font-weight:820}
.post-link svg{width:18px;height:18px;transition:transform .2s var(--blog-ease)}
.post-link:hover svg{transform:translateX(4px)}
.blog-post-card :focus-visible{outline:3px solid rgba(0,87,184,.32);outline-offset:3px}

.topic-band{display:grid;grid-template-columns:minmax(210px,.72fr) minmax(0,1.28fr);align-items:center;gap:2rem;margin-top:clamp(2.5rem,4.5vw,4rem);padding-top:2rem;border-top:1px solid var(--blog-line)}
.topic-band h2{color:var(--blog-ink);font-size:clamp(1.35rem,2vw,1.8rem);line-height:1.2;letter-spacing:-.025em}
.topic-band p{margin-top:.35rem;color:var(--blog-muted);font-size:.86rem}
.topic-links{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:.65rem}
.topic-links a{min-height:44px;display:inline-flex;align-items:center;padding:.58rem .92rem;border:1px solid #bdd3e2;border-radius:999px;background:#f8fbfd;color:var(--blog-ink);font-size:.8rem;font-weight:760;transition:background .18s linear,border-color .18s linear,color .18s linear,transform .2s var(--blog-ease)}
.topic-links a:hover{border-color:#8fc2dd;background:#eaf5fb;color:var(--blog-blue);transform:translateY(-1px)}

/* ---------- article hero ---------- */
.article-hero{padding:clamp(1rem,2vw,1.5rem) 0 clamp(2.25rem,4vw,3.5rem);background:linear-gradient(180deg,#f4f8fb 0%,#edf5fa 100%)}
.article-hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(360px,.92fr);align-items:stretch;overflow:hidden;border:1px solid #c9ddea;border-radius:16px;background:#f9fcfe;box-shadow:0 12px 34px rgba(0,43,92,.075)}
.article-hero-copy{display:flex;min-height:380px;flex-direction:column;justify-content:center;padding:clamp(1.65rem,3vw,2.65rem)}
.article-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:.55rem;margin-bottom:1rem;color:#587389;font-size:.7rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.article-breadcrumb a{color:var(--blog-blue)}
.article-breadcrumb a:hover{text-decoration:underline;text-underline-offset:3px}
.article-breadcrumb span[aria-hidden="true"]{color:#91a8b8}
.article-hero h1{max-width:20ch;color:var(--blog-ink);font-size:clamp(2rem,3vw,3.15rem);font-weight:860;line-height:1.07;letter-spacing:-.045em;text-wrap:balance}
.article-hero--long h1{max-width:25ch;font-size:clamp(1.85rem,2.55vw,2.7rem);line-height:1.1}
.article-deck{max-width:58ch;margin-top:1rem;color:#46657c;font-size:clamp(.96rem,1.2vw,1.06rem);line-height:1.66;text-wrap:pretty}
.article-byline{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem 1rem;margin-top:1.2rem;padding-top:1rem;border-top:1px solid #d6e4ed;color:#5e7689;font-size:.72rem;font-weight:700}
.article-byline strong{color:var(--blog-ink)}
.article-hero-media{position:relative;min-height:380px;overflow:hidden;background:#dbe8f1}
.article-hero-media::before{content:"";position:absolute;z-index:1;inset:0;background:linear-gradient(90deg,rgba(249,252,254,.24),transparent 25%);pointer-events:none}
.article-hero-media picture,.article-hero-media img{width:100%;height:100%}
.article-hero-media picture{display:block}
.article-hero-media img{display:block;object-fit:cover;object-position:center}

/* ---------- article body ---------- */
.article-main{background:#f9fbfd}
.article-layout{display:grid;grid-template-columns:210px minmax(0,730px);justify-content:center;align-items:start;gap:clamp(2rem,4vw,3.5rem);padding:clamp(3rem,5vw,4.5rem) 0 clamp(4rem,6vw,5.5rem)}
.article-toc{position:sticky;top:124px;padding-top:.35rem}
.article-toc>span{display:block;margin-bottom:.8rem;color:var(--blog-green);font-size:.68rem;font-weight:880;letter-spacing:.16em;text-transform:uppercase}
.article-toc ol{display:grid;gap:.15rem;padding-left:0;list-style:none;border-left:1px solid #c9dbe7}
.article-toc a{position:relative;min-height:38px;display:flex;align-items:center;padding:.42rem .75rem;color:#5b7488;font-size:.78rem;font-weight:680;line-height:1.35;transition:color .16s linear,background .16s linear}
.article-toc a::before{content:"";position:absolute;top:0;bottom:0;left:-1px;width:2px;background:transparent}
.article-toc a:hover,.article-toc a.is-active{background:#eef6fa;color:var(--blog-blue)}
.article-toc a.is-active::before{background:var(--blog-green)}
.mobile-toc{display:none}
.article-copy{min-width:0;color:#38556d;font-size:1rem;line-height:1.76}
.article-copy>p:first-child{font-size:1.06rem;color:#294b67}
.article-copy p+p{margin-top:1.15rem}
.article-copy section{scroll-margin-top:132px}
.article-copy section+section{margin-top:clamp(2.25rem,4vw,3.25rem)}
.article-copy h2{margin-bottom:.9rem;color:var(--blog-ink);font-size:clamp(1.5rem,2.5vw,2.05rem);font-weight:830;line-height:1.18;letter-spacing:-.03em;text-wrap:balance}
.article-copy h3{margin:1.75rem 0 .65rem;color:#0b3b68;font-size:1.16rem;line-height:1.32}
.article-copy ul,.article-copy ol{display:grid;gap:.55rem;margin:1rem 0 0 1.25rem}
.article-copy li::marker{color:var(--blog-green);font-weight:800}
.article-copy a:not(.article-button){color:#005ba7;font-weight:720;text-decoration:underline;text-decoration-color:#8dc5e5;text-underline-offset:3px}
.article-copy a:hover{text-decoration-color:var(--blog-blue)}
.quick-answer{position:relative;margin-bottom:2.25rem;padding:1.25rem 1.3rem;border:1px solid #bcd8e8;border-radius:13px;background:linear-gradient(135deg,#edf7fc,#f4faf6)}
.quick-answer::before{content:"";position:absolute;top:1.25rem;bottom:1.25rem;left:0;width:3px;border-radius:0 99px 99px 0;background:linear-gradient(var(--blog-blue),var(--blog-green))}
.quick-answer strong{display:block;margin-bottom:.35rem;color:var(--blog-ink);font-size:.98rem}
.quick-answer p{margin:0;color:#3e6078;font-size:.96rem;line-height:1.68}
.fact-note{margin-top:1.35rem;padding:1rem 1.1rem;border-radius:12px;background:#eef5fa;color:#365b75;font-size:.92rem;line-height:1.68}
.evidence-line{margin-top:.85rem!important;color:#587186;font-size:.8rem;line-height:1.6}
.evidence-line strong{color:var(--blog-ink)}
.evidence-line a:not(.article-button){font-weight:760}
.article-visual{margin:clamp(1.8rem,4vw,2.8rem) 0;overflow:hidden;border:1px solid #c9dce8;border-radius:18px;background:#edf5f8;box-shadow:0 18px 42px rgba(13,56,86,.11)}
.article-visual img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
.article-visual figcaption{padding:.78rem 1rem .85rem;color:#49677e;font-size:.82rem;line-height:1.55;background:#f8fbfc;border-top:1px solid #d5e4ec}
.article-visual figcaption strong{color:var(--blog-ink)}

.comparison-wrap{margin-top:1.25rem;overflow:hidden;border:1px solid #c8dbe8;border-radius:13px;background:#fbfdff;box-shadow:0 6px 18px rgba(0,43,92,.045)}
.comparison-table{width:100%;border-collapse:collapse;font-size:.9rem;line-height:1.55}
.comparison-table th,.comparison-table td{padding:.9rem 1rem;border-bottom:1px solid #d8e5ed;text-align:left;vertical-align:top}
.comparison-table tr:last-child td{border-bottom:0}
.comparison-table thead th{background:#073a6c;color:#f5faff;font-size:.72rem;letter-spacing:.06em;text-transform:uppercase}
.comparison-table tbody th{width:26%;background:#eff6fa;color:var(--blog-ink);font-size:.82rem}

.decision-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin-top:1.25rem}
.decision-panel{padding:1.25rem;border:1px solid #cddfe9;border-radius:14px;background:#f9fcfe}
.decision-panel.is-5g{background:#f1f9f4}
.decision-panel h3{margin:0;color:var(--blog-ink);font-size:1.08rem}
.decision-panel ul{margin-top:.75rem;font-size:.93rem;line-height:1.65}

.article-cta{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:1.35rem;margin:2.5rem 0;padding:clamp(1.35rem,3vw,1.85rem);border-radius:14px;background:linear-gradient(125deg,#002b5c,#075da9 68%,#087943);color:#eaf6ff;box-shadow:0 12px 28px rgba(0,43,92,.14)}
.article-cta h2{margin:0;color:#f5faff;font-size:clamp(1.4rem,2.5vw,2rem)}
.article-cta p{max-width:50ch;margin-top:.45rem;color:#d4e8f5;font-size:.9rem;line-height:1.6}
.article-button{min-height:48px;display:inline-flex;align-items:center;justify-content:center;padding:.7rem 1.1rem;border-radius:12px;background:#f5faff;color:#063968!important;font-size:.84rem;font-weight:830;text-decoration:none!important;white-space:nowrap;box-shadow:0 7px 18px rgba(0,20,45,.2);transition:transform .2s var(--blog-ease),box-shadow .2s var(--blog-ease)}
.article-button:hover{transform:translateY(-2px);box-shadow:0 11px 25px rgba(0,20,45,.28)}

.faq-list{display:grid;gap:.75rem;margin-top:1.2rem}
.faq-list details{overflow:hidden;border:1px solid #cadde9;border-radius:13px;background:#fbfdff}
.faq-list summary{min-height:54px;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.8rem 1rem;color:var(--blog-ink);font-size:.94rem;font-weight:790;cursor:pointer;list-style:none}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";width:26px;height:26px;display:grid;place-items:center;flex:none;border-radius:50%;background:#e8f3f9;color:var(--blog-blue);font-size:1.15rem;transition:transform .22s var(--blog-ease),background .18s linear}
.faq-list details[open] summary::after{background:#e5f4eb;color:#17723c;transform:rotate(45deg)}
.faq-answer{padding:0 1rem 1rem;color:#49677e;font-size:.93rem;line-height:1.7}

.source-box{padding:1.4rem;border:1px solid #bed6e6;border-radius:15px;background:#edf5fa}
.source-box h2{font-size:1.25rem}
.source-list{display:grid;gap:.85rem!important;margin:.8rem 0 0!important;list-style:none}
.source-list li{padding-bottom:.8rem;border-bottom:1px solid #d1e1eb}
.source-list li:last-child{padding-bottom:0;border-bottom:0}
.source-list a{word-break:break-word}
.article-disclaimer{margin-top:1.35rem;padding:1rem 1.1rem;border-radius:12px;background:#f4f6f8;color:#566d80;font-size:.82rem;line-height:1.6}
.author-box{display:grid;grid-template-columns:72px minmax(0,1fr);gap:1rem;align-items:center;margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--blog-line)}
.author-box img{width:72px;height:72px;padding:10px;border:1px solid #c7dbe7;border-radius:16px;background:#f2f8fb;object-fit:contain}
.author-box strong{display:block;color:var(--blog-ink);font-size:.95rem}
.author-box span{display:block;margin-top:.2rem;color:#4f697e;font-size:.78rem}
.author-box p{margin-top:.45rem!important;color:#526d82;font-size:.82rem;line-height:1.55}

/* ---------- related devices ---------- */
.related-guides{padding:clamp(3rem,5vw,4.5rem) 0;background:linear-gradient(180deg,#edf4f9,#f7fafc)}
.related-head{display:flex;align-items:end;justify-content:space-between;gap:2rem;margin-bottom:1.5rem}
.related-head span{color:var(--blog-green);font-size:.7rem;font-weight:850;letter-spacing:.16em;text-transform:uppercase}
.related-head h2{margin-top:.25rem;color:var(--blog-ink);font-size:clamp(1.6rem,2.8vw,2.3rem);line-height:1.12;letter-spacing:-.035em}
.related-head>a{min-height:44px;display:inline-flex;align-items:center;color:var(--blog-blue);font-size:.84rem;font-weight:800}
.related-device-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.2rem}
.related-device{overflow:hidden;border:1px solid #ccdde8;border-radius:14px;background:#fbfdff;box-shadow:0 7px 20px rgba(0,43,92,.055);transition:transform .25s var(--blog-ease),box-shadow .25s var(--blog-ease)}
.related-device-media{position:relative;display:block;aspect-ratio:1.45;overflow:hidden;background:#eaf2f7}
.related-device-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--blog-ease)}
.related-device-copy{padding:1rem 1.05rem 1.15rem}
.related-device-copy span{color:var(--blog-green);font-size:.65rem;font-weight:840;letter-spacing:.08em;text-transform:uppercase}
.related-device-copy h3{margin-top:.3rem;color:var(--blog-ink);font-size:1rem;line-height:1.35}
.related-device-copy p{margin-top:.45rem;color:#5b7487;font-size:.79rem;line-height:1.55}

/* Crisp, self-contained WhatsApp assistance control for blog pages. */
.shop-whatsapp{position:fixed;z-index:1200;right:max(18px,env(safe-area-inset-right));bottom:max(18px,env(safe-area-inset-bottom));display:inline-flex;align-items:center;gap:.65rem;min-height:48px;padding:.45rem .5rem .45rem 1rem;border:1px solid rgba(255,255,255,.34);border-radius:999px;background:#08783f;color:#fff!important;font-size:.75rem;font-weight:750;line-height:1;text-decoration:none!important;box-shadow:0 12px 28px rgba(0,69,38,.24);transition:transform .2s var(--blog-ease),background-color .2s linear,box-shadow .2s var(--blog-ease);touch-action:manipulation}
.shop-whatsapp img{display:block;width:36px;height:36px;padding:7px;border-radius:50%;background:#fff;object-fit:contain}
.shop-whatsapp:hover{transform:translateY(-2px);background:#076b39;box-shadow:0 16px 32px rgba(0,69,38,.3)}
.shop-whatsapp:active{transform:scale(.98)}
.shop-whatsapp:focus-visible{outline:3px solid #49bce8;outline-offset:4px}

[data-blog-reveal]{opacity:0;transform:translateY(18px);animation:blogRise .62s var(--blog-ease) forwards;animation-delay:var(--blog-delay,0s)}
@keyframes blogRise{to{opacity:1;transform:translateY(0)}}

@media(min-width:640px){
  .blog-post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media(min-width:900px){
  .blog-post-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}

@media(min-width:1200px){
  .blog-post-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
}

@media(hover:hover){
  .blog-post-card:hover{transform:translateY(-3px);border-color:#a9cada;box-shadow:0 13px 28px rgba(0,43,92,.09)}
  .blog-post-card:hover .blog-post-media img{transform:scale(1.025);filter:saturate(1.03)}
  .related-device:hover{transform:translateY(-3px);box-shadow:0 13px 28px rgba(0,43,92,.09)}
  .related-device:hover img{transform:scale(1.025)}
}

@media(max-width:980px){
  .article-layout{grid-template-columns:minmax(0,730px)}
  .article-toc{display:none}
  .mobile-toc{display:block;margin-bottom:1.5rem;border:1px solid #c7dbe8;border-radius:13px;background:#f4f9fc}
  .mobile-toc summary{min-height:48px;display:flex;align-items:center;justify-content:space-between;padding:.65rem .9rem;color:var(--blog-ink);font-size:.82rem;font-weight:800;cursor:pointer}
  .mobile-toc summary::after{content:"+";font-size:1.1rem;color:var(--blog-blue)}
  .mobile-toc[open] summary::after{content:"−"}
  .mobile-toc ol{display:grid;gap:.15rem;padding:0 .9rem .8rem 1.9rem;color:#506e84;font-size:.8rem}
  .mobile-toc a{display:block;padding:.28rem 0}
}

@media(max-width:880px){
  .article-hero-grid{grid-template-columns:1fr}
  .article-hero-copy{min-height:0}
  .article-hero h1{max-width:21ch}
  .article-hero-media{min-height:0;order:-1;aspect-ratio:5/2}
  .article-hero-media::before{background:linear-gradient(180deg,transparent 65%,rgba(249,252,254,.18))}
}

@media(max-width:760px){
  .blog-section-head,.related-head{align-items:start;flex-direction:column;gap:.75rem}
  .blog-section-head p{text-align:left}
  .topic-band{grid-template-columns:1fr;gap:1rem}
  .topic-links{justify-content:flex-start}
  .blog-intro,.blog-intro-inner{min-height:220px}
  .blog-intro-inner{padding-block:1.15rem}
  .blog-intro h1{font-size:clamp(2.15rem,8vw,3rem)}
  .blog-intro p{margin-top:.7rem;font-size:.86rem;line-height:1.5}
  .article-hero{padding:.6rem 0 1.5rem}
  .article-hero-copy{padding:1.5rem}
  .article-hero-media{aspect-ratio:2.4/1}
  .decision-grid{grid-template-columns:1fr}
  .article-cta{grid-template-columns:1fr}
  .article-button{width:max-content}
  .related-device-grid{grid-template-columns:1fr}
  .related-device{display:grid;grid-template-columns:150px minmax(0,1fr)}
  .related-device-media{height:100%;aspect-ratio:auto}
}

@media(max-width:640px){
  .blog-page{padding-bottom:0}
  .blog-intro,.blog-intro-inner{min-height:210px}
  .blog-intro::before{background:radial-gradient(ellipse 74% 96% at 50% 50%,rgba(0,13,34,.84),rgba(0,18,44,.55) 60%,rgba(0,25,58,.12) 100%),linear-gradient(90deg,rgba(0,31,74,.12),rgba(0,17,42,.3),rgba(0,77,68,.1))}
  .blog-intro-media img{object-position:center 55%}
  .north-guide-image{object-position:center 76%!important}
  .blog-intro-inner{padding-block:1rem}
  .blog-intro h1{font-size:clamp(1.9rem,8.4vw,2.65rem);line-height:1.02}
  .blog-intro p{max-width:36ch;margin-top:.64rem;color:#dcecf6;font-size:.8rem;line-height:1.45}
  .blog-post-card{border-radius:12px}
  .blog-post-copy{min-height:225px;padding:1rem}
  .blog-post-card h3{font-size:1.08rem}
  .topic-links a{font-size:.74rem}
  .article-visual{margin:1.5rem 0;border-radius:14px}
  .article-visual figcaption{padding:.7rem .82rem .76rem;font-size:.78rem}
  .article-hero-grid{border-radius:13px}
  .article-hero-media{aspect-ratio:3/2}
  .article-hero h1{font-size:clamp(1.85rem,8vw,2.3rem);line-height:1.09}
  .article-hero--long .article-hero-media{aspect-ratio:16/9}
  .article-hero--long .article-hero-copy{padding:1.15rem 1.2rem 1.2rem}
  .article-hero--long .article-breadcrumb{margin-bottom:.7rem}
  .article-hero--long .post-meta{margin-bottom:.75rem}
  .article-hero--long h1{max-width:none;font-size:clamp(1.6rem,7vw,1.82rem);line-height:1.1}
  .article-hero--long .article-deck{margin-top:.75rem;font-size:.9rem;line-height:1.58}
  .article-hero--long .article-byline{gap:.45rem .75rem;margin-top:.85rem;padding-top:.75rem;font-size:.68rem}
  .article-deck{font-size:.98rem}
  .article-layout{padding-top:2rem}
  .article-copy{font-size:1rem;line-height:1.78}
  .article-copy>p:first-child{font-size:1.05rem}
  .quick-answer{padding:1.2rem 1.15rem}
  .comparison-wrap{overflow:visible;border:0;background:transparent;box-shadow:none}
  .comparison-table,.comparison-table tbody,.comparison-table tr,.comparison-table th,.comparison-table td{display:block;width:100%}
  .comparison-table thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
  .comparison-table tr{margin-bottom:.8rem;overflow:hidden;border:1px solid #cadde9;border-radius:12px;background:#fbfdff}
  .comparison-table tbody th{width:100%;padding:.7rem .85rem;background:#eaf4f9}
  .comparison-table td{position:relative;padding:.75rem .85rem .75rem 7.4rem;border-bottom:1px solid #dce7ee;min-height:56px}
  .comparison-table td:last-child{border-bottom:0}
  .comparison-table td::before{content:attr(data-label);position:absolute;top:.78rem;left:.85rem;width:5.8rem;color:var(--blog-blue);font-size:.68rem;font-weight:850;letter-spacing:.05em;text-transform:uppercase}
  .article-cta{margin-inline:-1vw;border-radius:15px}
  .author-box{grid-template-columns:58px minmax(0,1fr)}
  .author-box img{width:58px;height:58px}
  .related-device{grid-template-columns:118px minmax(0,1fr)}
  .related-device-copy{padding:.8rem}
  .shop-whatsapp{right:max(12px,env(safe-area-inset-right));bottom:max(12px,env(safe-area-inset-bottom));min-width:48px;padding:6px;border-radius:16px}
  .shop-whatsapp span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
  .shop-whatsapp img{width:36px;height:36px}
}

@media(max-width:390px){
  .blog-intro,.blog-intro-inner{min-height:200px}
  .blog-intro h1{font-size:1.9rem}
  .blog-intro p{font-size:.76rem}
  .article-hero-copy{padding:1.25rem}
  .article-hero-media{aspect-ratio:16/10}
  .article-byline{gap:.55rem}
  .related-device{grid-template-columns:104px minmax(0,1fr)}
}

/* ---------- shared mobile shell alignment ---------- */
@media(max-width:767.98px){
  body[data-mobile-page="blog"]{padding-bottom:0}
  body[data-mobile-page="blog"] main{min-width:0}
  body[data-mobile-page="blog"] .blog-container{width:calc(100% - 24px);max-width:none}

  body[data-mobile-page="blog"] .blog-index-main{padding:2.5rem 0 3rem}
  body[data-mobile-page="blog"] .blog-section-head,
  body[data-mobile-page="blog"] .related-head{width:100%;gap:.65rem;margin-bottom:1.2rem}
  body[data-mobile-page="blog"] .blog-section-head p{max-width:52ch}
  body[data-mobile-page="blog"] .topic-band{gap:1rem;margin-top:2.5rem;padding-top:1.5rem}
  body[data-mobile-page="blog"] .topic-links{display:grid;width:100%;grid-template-columns:repeat(2,minmax(0,1fr));gap:.55rem}
  body[data-mobile-page="blog"] .topic-links a{width:100%;justify-content:center;padding-inline:.65rem;text-align:center}

  body[data-mobile-page="blog"] .article-hero{padding:.4rem 0 1.25rem}
  body[data-mobile-page="blog"] .article-hero-copy{padding:1.2rem}
  body[data-mobile-page="blog"] .article-breadcrumb{gap:.35rem .48rem;margin-bottom:.75rem;font-size:.65rem;line-height:1.45}
  body[data-mobile-page="blog"] .article-hero--long h1{font-size:clamp(1.45rem,7vw,1.82rem);line-height:1.12}
  body[data-mobile-page="blog"] .article-deck{font-size:.94rem;line-height:1.62}
  body[data-mobile-page="blog"] .article-byline{gap:.45rem .75rem;margin-top:.9rem;padding-top:.8rem;line-height:1.5}

  body[data-mobile-page="blog"] .article-layout{padding:1.5rem 0 3rem}
  body[data-mobile-page="blog"] .quick-answer[id],
  body[data-mobile-page="blog"] .article-copy section[id]{scroll-margin-top:84px}
  body[data-mobile-page="blog"] .mobile-toc{margin-bottom:1.25rem}
  body[data-mobile-page="blog"] .mobile-toc summary{min-height:52px}
  body[data-mobile-page="blog"] .article-copy{max-width:100%;overflow-wrap:anywhere}
  body[data-mobile-page="blog"] .article-copy section{min-width:0}
  body[data-mobile-page="blog"] .quick-answer{margin-bottom:1.75rem;padding:1.1rem}
  body[data-mobile-page="blog"] .comparison-table th,
  body[data-mobile-page="blog"] .comparison-table td,
  body[data-mobile-page="blog"] .source-list a{overflow-wrap:anywhere;word-break:normal}
  body[data-mobile-page="blog"] .article-cta{width:100%;margin:2rem 0;padding:1.25rem}
  body[data-mobile-page="blog"] .article-button{width:100%;min-width:0;white-space:normal;text-align:center}

  body[data-mobile-page="blog"] .related-device-copy{min-width:0}
  body[data-mobile-page="blog"] .related-device-copy h3,
  body[data-mobile-page="blog"] .related-device-copy p{overflow-wrap:anywhere}
  body[data-mobile-page="blog"] footer{padding-bottom:calc(1.5rem + var(--mobile-nav-height,64px) + max(20px,env(safe-area-inset-bottom)))}
}

@media(max-width:639.98px){
  body[data-mobile-page="blog"] .blog-post-media{aspect-ratio:16/9}
  body[data-mobile-page="blog"] .blog-post-copy{min-height:0}
  body[data-mobile-page="blog"] .post-link{margin-top:1rem}
}

@media(max-width:390px){
  body[data-mobile-page="blog"] .article-hero-copy{padding:1.05rem}
  body[data-mobile-page="blog"] .article-hero:not(.article-hero--long) h1{font-size:clamp(1.65rem,8vw,2rem);line-height:1.1}
  body[data-mobile-page="blog"] .article-cta{padding:1.1rem}
  body[data-mobile-page="blog"] .related-device{grid-template-columns:100px minmax(0,1fr)}
}

@media(prefers-reduced-motion:reduce){
  .blog-intro-media img,.blog-intro h1,.blog-intro p{animation:none}
  [data-blog-reveal]{opacity:1;transform:none;animation:none}
  .blog-post-card,.blog-post-media img,.related-device,.related-device img,.post-link svg,.article-button,.topic-links a,.shop-whatsapp{transition:none}
  .shop-whatsapp:hover,.shop-whatsapp:active{transform:none}
}