:root{--ink:#14213d;--muted:#5d6780;--paper:#f7f8f3;--white:#fff;--cyan:#16b8c4;--cyan-dark:#087a83;--amber:#ffbf48;--violet:#7258d6;--line:#dfe4df;--shadow:0 18px 54px rgba(20,33,61,.10);--radius:24px;--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}img{max-width:100%;height:auto}a{color:var(--cyan-dark);text-underline-offset:3px}a:hover{color:#064f55}button,a{touch-action:manipulation}.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:12px;z-index:100;background:#fff;padding:12px 16px;border-radius:10px}.independent-bar{background:var(--ink);color:#dfeafa;font-size:.84rem;text-align:center;padding:8px 16px}.independent-bar a{color:#fff}.site-header{position:sticky;top:0;z-index:40;background:rgba(247,248,243,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(20,33,61,.09)}.header-inner{max-width:var(--max);margin:auto;padding:14px 24px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:850;letter-spacing:-.02em;white-space:nowrap}.brand img{width:34px;height:34px}.nav{margin-left:auto;display:flex;align-items:center;gap:4px}.nav a{color:var(--ink);text-decoration:none;padding:10px 12px;border-radius:12px;font-size:.94rem;font-weight:650}.nav a:hover,.nav a[aria-current=page]{background:#e9eeea;color:var(--ink)}.menu-button{display:none;margin-left:auto;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;font:inherit;font-weight:750;color:var(--ink)}.container{max-width:var(--max);margin:auto;padding:0 24px}.hero{padding:58px 0 48px;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.13fr .87fr;gap:56px;align-items:center}.eyebrow,.label{display:inline-flex;align-items:center;gap:8px;font-size:.75rem;font-weight:850;letter-spacing:.1em;text-transform:uppercase;color:var(--cyan-dark)}.eyebrow:before{content:"";width:20px;height:2px;background:var(--amber)}h1,h2,h3{line-height:1.12;letter-spacing:-.035em}h1{font-size:clamp(2.55rem,6vw,5.4rem);margin:.22em 0 .25em;max-width:12ch}h2{font-size:clamp(1.75rem,3.5vw,3rem);margin:0 0 20px}h3{font-size:1.18rem;margin:0 0 10px}.lead{font-size:clamp(1.08rem,2vw,1.34rem);color:var(--muted);max-width:660px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:28px 0 18px}.btn{display:inline-flex;justify-content:center;align-items:center;gap:10px;min-height:50px;padding:13px 20px;border-radius:14px;background:var(--cyan-dark);color:#fff!important;text-decoration:none;font-weight:800;border:2px solid var(--cyan-dark);box-shadow:0 10px 30px rgba(8,122,131,.18)}.btn:hover{background:#05666e}.btn.secondary{background:transparent;color:var(--ink)!important;border-color:#bfc8c2;box-shadow:none}.destination{font-size:.88rem;color:var(--muted)}.destination code{background:#e9eeea;padding:3px 6px;border-radius:6px;color:var(--ink)}.route-board{background:var(--ink);color:#fff;border-radius:32px;padding:28px;position:relative;box-shadow:var(--shadow);transform:rotate(1deg)}.route-board:after{content:"";position:absolute;inset:-16px 18px 16px -16px;border:2px solid var(--amber);border-radius:32px;z-index:-1}.board-head{display:flex;justify-content:space-between;align-items:center;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.15)}.status-dot{display:inline-flex;align-items:center;gap:8px;color:#c9f5f7;font-size:.78rem;font-weight:750}.status-dot:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--cyan)}.qr-mini{display:grid;grid-template-columns:116px 1fr;gap:18px;align-items:center;padding:24px 0}.qr-mini img{background:#fff;border-radius:12px}.qr-mini p{color:#c9d1e2;font-size:.9rem}.route-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}.route-list li{display:grid;grid-template-columns:34px 1fr;gap:10px;align-items:center}.route-list span{width:32px;height:32px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.25);border-radius:50%;color:var(--amber);font-weight:850}.section{padding:72px 0}.section.alt{background:#eef1eb;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.section-head{display:grid;grid-template-columns:.65fr 1.35fr;gap:38px;align-items:start;margin-bottom:32px}.section-head p{margin:0;color:var(--muted);font-size:1.07rem}.intro-panel{background:#fff;border-radius:var(--radius);padding:30px;border:1px solid var(--line);box-shadow:var(--shadow)}.route-tabs{display:flex;gap:8px;margin-bottom:18px}.route-tabs button{border:1px solid var(--line);background:#fff;padding:11px 16px;border-radius:12px;color:var(--ink);font:inherit;font-weight:750}.route-tabs button[aria-selected=true]{background:var(--ink);color:#fff;border-color:var(--ink)}.tab-panel{display:none}.tab-panel.active{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.step-card,.link-card,.number-cards article,.principles article{background:#fff;padding:24px;border:1px solid var(--line);border-radius:20px}.step-card b,.number-cards b,.principles b{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:50%;background:#ddf6f4;color:var(--cyan-dark);margin-bottom:22px}.step-card p,.link-card p,.number-cards p,.principles p{color:var(--muted);margin-bottom:0}.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.quick-grid a,.link-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;text-decoration:none;color:var(--ink);font-weight:750}.quick-grid a span{display:block;color:var(--muted);font-weight:500;font-size:.9rem;margin-top:8px}.quick-grid a:hover,.link-card:hover{border-color:var(--cyan);transform:translateY(-2px)}.safety-band{background:var(--amber);border-radius:28px;padding:32px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center}.safety-band h2{margin:0 0 10px}.safety-band p{margin:0;max-width:760px}.faq-list{display:grid;gap:12px}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:0 20px}.faq-list summary{cursor:pointer;font-weight:800;padding:18px 34px 18px 0;position:relative}.faq-list summary:after{content:"+";position:absolute;right:0;font-size:1.4rem;color:var(--cyan-dark)}.faq-list details[open] summary:after{content:"−"}.faq-list p{color:var(--muted);margin:0 0 20px}.breadcrumbs{font-size:.88rem;color:var(--muted);padding-top:26px}.breadcrumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px}.breadcrumbs li:not(:last-child):after{content:"/";margin-left:8px;color:#9ba39d}.page-hero{padding:38px 0 32px}.page-hero h1{font-size:clamp(2.35rem,5vw,4.4rem);max-width:16ch}.page-hero .lead{max-width:780px}.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:52px;padding-bottom:76px}.article{min-width:0}.content-section{padding:36px 0;border-top:1px solid var(--line)}.content-section:first-child{border-top:0}.content-section>p:first-child{margin-top:0}.side-index{position:sticky;top:120px;align-self:start;border-left:2px solid var(--amber);padding-left:18px}.side-index strong{display:block;margin-bottom:10px}.side-index a{display:block;text-decoration:none;font-size:.9rem;padding:5px 0;color:var(--muted)}.check-grid,.number-cards,.phone-columns,.verify-grid,.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.check-grid>div,.phone-columns article,.verify-grid>div{background:#fff;padding:22px;border:1px solid var(--line);border-radius:18px}.route-steps{list-style:none;padding:0;display:grid;gap:16px}.route-steps li{display:grid;grid-template-columns:54px 1fr;gap:18px;align-items:start;background:#fff;border:1px solid var(--line);padding:20px;border-radius:18px}.route-steps li>span{width:48px;height:48px;display:grid;place-items:center;background:var(--ink);color:var(--amber);border-radius:14px;font-weight:850}.route-steps p{margin:6px 0;color:var(--muted)}.route-steps.compact{grid-template-columns:repeat(3,1fr)}.route-steps.compact li{grid-template-columns:1fr}.note{display:block;margin:24px 0;padding:22px;border-radius:18px;background:#fff;border:1px solid var(--line)}.note strong{font-size:1.05rem}.note p{margin:6px 0 0}.note.amber{background:#fff5d8;border-color:#f4cf79}.note.dark{background:var(--ink);color:#fff;border-color:var(--ink)}.note.dark a{color:#8cebf0}.workspace-map{display:grid;grid-template-columns:1fr auto 1fr;gap:18px;align-items:center;margin:26px 0}.device-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;text-align:center}.device-card span,.device-card small{display:block}.device-icon{font-size:3rem;color:var(--violet)}.signal-line{color:var(--cyan-dark);font-size:.8rem;font-weight:800;text-transform:uppercase}.number-cards{grid-template-columns:repeat(3,1fr)}.browser-bar{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;background:var(--ink);color:#fff;padding:14px 18px;border-radius:14px;overflow:auto}.traffic{color:#ff9c94;letter-spacing:4px}.browser-bar code{color:#d7f9fa}.lock{font-size:.72rem;color:#9de4a7;font-weight:850}.tick-list{padding:0;list-style:none;display:grid;gap:10px}.tick-list li{padding-left:30px;position:relative}.tick-list li:before{content:"✓";position:absolute;left:0;color:var(--cyan-dark);font-weight:900}table{width:100%;border-collapse:separate;border-spacing:0;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}th,td{text-align:left;padding:14px;border-bottom:1px solid var(--line);vertical-align:top}tr:last-child td{border-bottom:0}th{background:#edf3ef;font-size:.85rem}.qr-stage{display:grid;grid-template-columns:280px 1fr;gap:32px;align-items:center}.qr-stage img{border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}.label.violet{color:var(--violet)}.phone-columns{grid-template-columns:1fr 1fr}.compare{display:grid;grid-template-columns:1fr 1fr;gap:16px}.compare article{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px}.fault-strip,.symptoms{display:flex;flex-wrap:wrap;gap:9px}.fault-strip span,.symptoms a{background:#e6eeee;border-radius:999px;padding:8px 13px;text-decoration:none;color:var(--ink);font-size:.88rem;font-weight:750}.response-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.response-flow>div{background:var(--ink);color:#fff;padding:18px;border-radius:16px}.response-flow b{color:var(--amber)}.response-flow p{margin:8px 0 0;font-size:.9rem}.diag-row{display:grid;grid-template-columns:58px 1fr;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}.diag-row>span{font-size:1.4rem;color:var(--violet);font-weight:900}.minute-check{list-style:none;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.minute-check li{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}.minute-check b{color:var(--violet)}.split-actions,.do-dont{display:grid;grid-template-columns:1fr 1fr;gap:14px}.split-actions>div,.do-dont article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.shield-list{display:grid;gap:10px}.shield-list>div{display:grid;grid-template-columns:42px 1fr;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px}.shield-list b{color:var(--cyan-dark)}.shield-list p{margin:0}.incident{display:grid;grid-template-columns:80px 1fr;column-gap:18px;padding:18px 0;border-top:1px solid var(--line)}.incident span{grid-row:1/3;color:var(--violet);font-weight:850;text-transform:uppercase;font-size:.76rem}.incident p{margin:0;color:var(--muted)}.exit-path{display:grid;grid-template-columns:80px 1fr;gap:22px;background:var(--ink);color:#fff;border-radius:22px;padding:26px}.exit-path>span{font-size:3rem;color:var(--amber);font-weight:900}.exit-path.alternate{background:#e8ecff;color:var(--ink)}.contact-card{background:var(--ink);color:#fff;border-radius:24px;padding:30px}.contact-card span{display:block;color:var(--amber);font-size:.75rem;letter-spacing:.12em}.contact-card a{display:inline-block;color:#fff;font-size:clamp(1.25rem,4vw,2.2rem);font-weight:850;margin:8px 0}.related{padding:32px 0 72px}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.related a{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;text-decoration:none;color:var(--ink);font-weight:750}.related a:hover{border-color:var(--cyan)}.cta-strip{display:flex;justify-content:space-between;align-items:center;gap:24px;background:#dff6f3;border-radius:24px;padding:28px;margin:26px 0}.cta-strip p{margin:5px 0 0}.site-footer{background:var(--ink);color:#d5ddec;padding:56px 0 24px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:34px}.site-footer h2,.site-footer h3{color:#fff}.site-footer h2{font-size:1.45rem}.site-footer a{display:block;color:#d5ddec;text-decoration:none;margin:8px 0}.site-footer a:hover{color:#fff}.footer-note{font-size:.9rem;max-width:390px}.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:36px;padding-top:20px;font-size:.82rem;color:#aeb8cb;display:flex;justify-content:space-between;gap:18px}.error-page{min-height:70vh;display:grid;place-items:center;text-align:center;padding:40px}.error-code{font-size:clamp(5rem,20vw,12rem);line-height:.8;color:var(--cyan-dark);font-weight:950;letter-spacing:-.08em}.error-page h1{max-width:none;font-size:2.2rem}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:900px){.nav{display:none;position:absolute;top:100%;left:16px;right:16px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px;box-shadow:var(--shadow)}.nav.open{display:grid}.menu-button{display:block}.hero-grid,.section-head,.article-wrap,.footer-grid{grid-template-columns:1fr}.hero-grid{gap:42px}.side-index{display:none}.tab-panel.active,.quick-grid{grid-template-columns:repeat(2,1fr)}.response-flow,.minute-check{grid-template-columns:repeat(2,1fr)}.route-steps.compact{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.safety-band{grid-template-columns:1fr}.safety-band .btn{justify-self:start}.route-board{transform:none;max-width:620px}.related-grid{grid-template-columns:1fr}}
@media(max-width:620px){.container,.header-inner{padding-left:16px;padding-right:16px}.independent-bar{font-size:.76rem}.hero{padding-top:38px}h1{font-size:2.55rem}.section{padding:52px 0}.route-board{padding:22px}.route-board:after{display:none}.qr-mini{grid-template-columns:86px 1fr}.tab-panel.active,.quick-grid,.check-grid,.number-cards,.phone-columns,.verify-grid,.principles,.compare,.split-actions,.do-dont,.related-grid{grid-template-columns:1fr}.workspace-map{grid-template-columns:1fr}.signal-line{text-align:center}.qr-stage{grid-template-columns:1fr}.qr-stage img{max-width:250px;margin:auto}.response-flow,.minute-check{grid-template-columns:1fr}.browser-bar{grid-template-columns:auto 1fr}.browser-bar .lock{display:none}.cta-strip{align-items:stretch;flex-direction:column}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column}.hero-actions .btn{width:100%}.route-tabs{overflow:auto}.route-tabs button{white-space:nowrap}.article-wrap{padding-bottom:40px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}