:root{--navy:#14253c;--ink:#152338;--blue:#1769ca;--muted:#576879;--bg:#f6f8fb;--white:#fff;--line:#dbe4ee;--gold:#fae1a2}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.8 -apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
header{background:var(--white);border-bottom:1px solid var(--line)}.wrap{width:min(1080px,calc(100% - 32px));margin:auto}.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px 0}.logo{font-weight:800;color:var(--navy);font-size:19px;white-space:nowrap}.logo b{display:inline-grid;place-items:center;background:var(--blue);color:#fff;border-radius:11px;width:35px;height:35px;margin-right:9px}nav{display:flex;gap:18px;flex-wrap:wrap}nav a{font-size:14px;color:var(--ink);font-weight:650}
.alert{padding:9px 0;background:#eef5ff;border-bottom:1px solid #dae6f6;color:#33506b;font-size:13px}.hero{padding:86px 0 78px;color:#fff;background:linear-gradient(115deg,#132741,#1b4672 65%,#1b78ad)}.eyebrow{text-transform:uppercase;letter-spacing:.15em;font-size:12px;font-weight:750;color:#b6d9ff}.hero h1{line-height:1.35;letter-spacing:-.035em;font-size:clamp(32px,5.2vw,55px);margin:12px 0 16px}.hero p{max-width:660px;color:#e4eff9;font-size:17px}.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--blue);color:#fff;padding:12px 23px;border-radius:12px;font-weight:750;border:0;cursor:pointer;font-size:15px}.btn:hover{background:#1353a0;text-decoration:none}.btn.light{background:#fff;color:var(--navy)}
section{padding:45px 0}h2{font-size:clamp(23px,3vw,30px);line-height:1.4;margin:0 0 12px;letter-spacing:-.025em}h3{font-size:19px;line-height:1.5}.lead{color:var(--muted);max-width:760px;margin:0 0 24px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:0 4px 18px #17335008}.card h3{margin:12px 0 8px}.card p{color:var(--muted);font-size:14px}.kicker{font-size:12px;color:var(--blue);font-weight:800;letter-spacing:.08em}.arrow{font-weight:750}.article{max-width:790px;margin:42px auto 70px;background:#fff;padding:44px 52px;border:1px solid var(--line);border-radius:20px}.article h1{line-height:1.35;letter-spacing:-.03em;font-size:clamp(26px,4vw,37px)}.article h2{border-top:1px solid var(--line);padding-top:22px;margin-top:35px;font-size:24px}.article p,.article li{line-height:1.95}.article .meta{font-size:13px;color:var(--muted)}.article ul,.article ol{padding-left:24px}.notice{background:#eff7ff;border-left:4px solid var(--blue);padding:16px 19px;border-radius:8px;font-size:14px}.article table{border-collapse:collapse;width:100%;font-size:14px}.article td,.article th{border:1px solid var(--line);padding:11px;text-align:left}.article th{background:#f0f5fa}.tablewrap{overflow-x:auto}select,button{font:inherit}label{display:block;font-weight:700;margin-bottom:7px}.field{margin:18px 0}select{width:100%;padding:12px;border-radius:10px;border:1px solid #aab7c8;background:#fff}.result{padding:20px;margin:25px 0;background:#f1f9ff;border-radius:12px;border:1px solid #c9e6fc}.result:empty{display:none}.pill{display:inline-block;background:#eaf4ff;color:#235a93;padding:3px 10px;border-radius:20px;font-size:13px;font-weight:750}
footer{background:#14253c;color:#c6d6e7;padding:38px 0;font-size:13px}footer a{color:#e8f3ff}footer .links{display:flex;gap:17px;flex-wrap:wrap;margin-top:12px}
@media(max-width:720px){.nav{display:block}.nav nav{margin-top:11px;gap:13px}.grid{grid-template-columns:1fr}.hero{padding:58px 0}.article{margin:20px auto 45px;padding:24px 20px}section{padding:36px 0}}
.article input[type=text],.article input[type=email],.article textarea{width:100%;padding:12px 14px;border:1px solid #aab7c8;border-radius:10px;background:#fff;color:#152338;font:inherit}
.article input[type=checkbox]{width:18px;height:18px;vertical-align:middle;accent-color:#1769ca}
.article input:focus-visible,.article textarea:focus-visible,.article select:focus-visible{outline:3px solid #aacfff;outline-offset:2px}
.article .hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.article textarea{min-height:140px;resize:vertical}

/* UI guidance: navigation, discoverability, bento */
.global-nav{display:flex;gap:7px;flex-wrap:wrap;align-items:center}
.global-nav a{display:inline-flex;padding:8px 10px;white-space:nowrap;border-radius:9px;font-size:14px;color:var(--ink);font-weight:650}
.global-nav a:hover,.global-nav a:focus-visible{background:#eaf3ff;text-decoration:none}
.breadcrumbs{display:flex;align-items:center;flex-wrap:wrap;gap:9px;font-size:13px;color:var(--muted);margin-bottom:20px}
.article-toc{display:block;background:#f6f9fc;border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin:24px 0}
.article-toc strong{display:block;margin-bottom:8px}
.article-toc ol{margin:0;padding-left:21px;columns:2;column-gap:20px}
.article-toc li{break-inside:avoid;margin:3px 0;font-size:14px}
.article h2[id]{scroll-margin-top:24px}
.related-articles{margin-top:36px;border-top:1px solid var(--line);padding-top:8px}
.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(175px,1fr));gap:10px}
.related-grid a,.topic-list a{display:flex;flex-direction:column;gap:5px;background:#fff;padding:15px;border:1px solid var(--line);border-radius:12px;min-width:0}
.related-grid a:hover,.topic-list a:hover{background:#f1f8ff;border-color:#9ac5ed;text-decoration:none}
.related-grid strong,.topic-list strong{color:var(--navy);font-size:15px;line-height:1.55}
.related-grid span,.topic-list span{color:var(--muted);font-size:13px}
.topic-list{display:grid;gap:11px}
.quick-paths{background:#edf4fc;border-block:1px solid var(--line)}
.quick-path-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:18px}
.quick-path-grid a{display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid var(--line);padding:20px;border-radius:14px;color:var(--navy)}
.quick-path-grid a:hover{border-color:#7ab2ec;background:#fbfdff;text-decoration:none}
.quick-path-grid a span{color:var(--blue);font-weight:800;font-size:12px;letter-spacing:.08em}
.quick-path-grid a strong{line-height:1.5;font-size:17px}
.quick-path-grid a small{color:var(--muted);font-size:13px}
@media(max-width:720px){.nav .global-nav{flex-wrap:nowrap;overflow-x:auto;margin-top:11px;padding-bottom:7px;scrollbar-width:thin;gap:5px}.global-nav a{font-size:13px;flex:none}.article-toc ol{columns:1}.quick-path-grid{grid-template-columns:1fr}.quick-path-grid a{padding:16px}.related-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* photographic visual guides 2026-11 */
.hero{padding:56px 0 62px;background:linear-gradient(112deg,#11283e,#1d4774)}
.hero-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.04fr);gap:35px;align-items:center}
.hero-copy{min-width:0}
.hero-copy h1{font-size:clamp(30px,4.1vw,47px);line-height:1.32}
.hero-copy p{font-size:16px;line-height:1.85}
.hero-copy .btn{margin:4px 6px 4px 0;padding:11px 15px;font-size:14px}
.hero-visual{margin:0;min-width:0}
.hero-visual img{display:block;width:100%;height:auto;aspect-ratio:1.67;object-fit:cover;border-radius:18px;box-shadow:0 18px 40px #06162555}
.hero-visual figcaption{color:#bfd1e4;font-size:11px;text-align:right;margin-top:6px}
.article-visual,.article-photo{margin:25px 0 30px;max-width:100%}
.article-photo img{display:block;width:100%;max-height:370px;object-fit:cover;object-position:center;border-radius:15px}
.visual-scroll{overflow-x:auto;max-width:100%;border-radius:14px;border:1px solid var(--line);background:#f5f9ff;scrollbar-width:thin}
.visual-scroll img{display:block;width:100%;height:auto}
.article-visual figcaption,.article-photo figcaption{font-size:12px;line-height:1.6;color:var(--muted);margin-top:8px}
.visual-feature-section{background:#fff}
.visual-feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}
.visual-feature{background:#fff;border:1px solid var(--line);border-radius:15px;display:flex;flex-direction:column;gap:7px;padding:10px 10px 16px;overflow:hidden;transition:box-shadow .2s ease,border-color .2s ease}
.visual-feature:hover{border-color:#9cbfea;box-shadow:0 10px 24px #1a3a651a;text-decoration:none}
.visual-feature img{width:100%;height:135px;object-fit:cover;object-position:top;border-radius:9px;background:#f4f8ff}
.visual-feature span{font-size:12px;color:#1769ca;font-weight:700;padding:0 6px}
.visual-feature strong{font-size:17px;line-height:1.5;color:#18314a;padding:0 6px}
.topic-thumb{display:block;width:100%;height:150px;object-fit:cover;border-radius:9px;margin-bottom:8px;background:#f0f5fd}
@media(max-width:840px){.hero-layout{grid-template-columns:1fr;gap:20px}.hero{padding:40px 0 42px}.hero-visual img{max-height:350px}.visual-feature-grid{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.visual-feature-grid{grid-template-columns:1fr}.visual-feature img{height:180px}.hero-copy h1{font-size:32px}.hero-copy .btn{width:100%;justify-content:center;margin-right:0}.hero-visual img{max-height:240px}.wide-diagram .visual-scroll img{width:760px;max-width:none}.article-photo img{max-height:260px}}
@media(prefers-reduced-motion:reduce){.visual-feature{transition:none}}

/* visual swipe hint */
.visual-swipe-hint{display:none;font-size:12px;color:#49657c;margin:6px 0}
@media(max-width:620px){.visual-swipe-hint{display:block}}

/* 2026-11-02: reader-journey redesign. One accent, clear stages and linked illustrations. */
:root{--brand:#1763b5;--brand-deep:#103451;--brand-faint:#edf5fc;--ink:#172c3e;--muted:#536a7d;--line:#dbe6ee;--panel:#fff;--page:#f7f9fc}
body{color:var(--ink);background:var(--page);overflow-x:hidden}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #75a9e2;outline-offset:3px}
.skip-link{position:absolute;z-index:100;left:12px;top:-100px;background:white;color:var(--brand);padding:8px 12px;border-radius:8px}
.skip-link:focus{top:12px}
.site-header{background:#fff;border-bottom:1px solid var(--line)}
.site-nav-row{min-height:78px;display:flex;align-items:center;gap:26px;justify-content:space-between;padding:11px 0}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;white-space:nowrap}
.brand:hover{text-decoration:none}
.brand-mark{width:39px;height:39px;display:grid;place-items:center;background:#1763b5;border-radius:12px;color:#fff;font-size:23px;font-weight:800}
.brand-text{display:flex;flex-direction:column;line-height:1.3;gap:3px;color:#142d44}
.brand-text strong{font-size:19px}
.brand-text small{font-size:11px;font-weight:500;color:#637b8d}
.global-nav{display:flex;align-items:center;gap:6px}
.global-nav a{font-size:14px;white-space:nowrap;padding:9px 11px;border-radius:10px;color:#294154}
.global-nav a:last-child{background:var(--brand);color:white;font-weight:700}
.global-nav a:hover,.global-nav a:focus-visible{background:#edf5fc;color:#0c518f;text-decoration:none}
.global-nav a:last-child:hover{background:#0e4d90;color:#fff}
.mobile-menu{display:none}
.site-footer{background:#132b40;color:#d7e7f3;padding:35px 0 25px}
.footer-inner{display:flex;gap:20px;justify-content:space-between;align-items:start;padding-bottom:19px}
.footer-brand{font-weight:800;color:#fff;font-size:19px}
.footer-inner p{font-size:13px;margin:8px 0 0;color:#c5d8e7}
.footer-nav{display:flex;gap:16px;flex-wrap:wrap}
.footer-nav a{color:#f0f7ff;font-size:13px}
.footer-bottom{border-top:1px solid #355068;padding-top:17px;display:flex;justify-content:space-between;gap:12px;align-items:start;color:#b9ccdc}
.footer-bottom p,.footer-bottom small{margin:0;font-size:12px}
.home-intro{padding:57px 0 55px;background:linear-gradient(125deg,#eef6ff,#fff 70%);border-bottom:1px solid #dfe8f3}
.home-intro-grid{display:grid;grid-template-columns:minmax(0,1fr) 390px;align-items:center;gap:56px}
.overline,.step-kicker{color:#1763b5;font-size:13px;line-height:1.5;font-weight:800;letter-spacing:.035em;margin:0 0 11px}
.intro-copy h1{font-size:clamp(33px,4.3vw,54px);line-height:1.27;letter-spacing:-.032em;margin:0 0 16px;color:#14324a}
.intro-lead{font-size:17px;max-width:570px;color:#435b6e;line-height:1.85;margin:0 0 25px}
.intro-actions{display:flex;gap:10px;flex-wrap:wrap}
.btn-primary{background:var(--brand);color:#fff}
.btn-subtle{background:#fff;color:var(--brand);border:1px solid #b5cfe6}
.btn-subtle:hover{background:#eff6fc;color:#135698}
.path-preview{margin:0;background:#fff;border:1px solid #d7e4f1;border-radius:21px;padding:25px 27px;box-shadow:0 14px 38px #233b550d}
.path-heading{margin:0 0 15px;color:#536d80;font-size:13px;font-weight:800}
.path-preview ol{padding:0;margin:0;list-style:none;display:grid;gap:0}
.path-preview li{display:flex;align-items:center;gap:13px;position:relative;padding:6px 0 14px}
.path-preview li:not(:last-child):after{content:"";position:absolute;width:2px;height:15px;background:#b8d5ef;left:17px;bottom:-1px}
.path-preview li:last-child{padding-bottom:0}
.path-count{width:36px;height:36px;flex:none;border-radius:11px;display:grid;place-items:center;color:var(--brand);background:#e5f0fc;font-weight:900}
.path-preview li strong{display:block;font-size:16px;line-height:1.4;color:#1d3850}
.path-preview li small{display:block;font-size:12px;color:#667c8d;margin-top:3px}
.home-section{padding:62px 0 67px}
.home-section-tint{background:#edf4fa}
.home-section h2{margin:0 0 9px;font-size:clamp(24px,3vw,32px);line-height:1.4}
.section-lead{color:#536a7e;font-size:15px;line-height:1.8;max-width:790px;margin:0 0 24px}
.problem-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.problem-card{display:flex;flex-direction:column;gap:9px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;color:var(--ink);min-height:229px;box-shadow:0 5px 18px #2137490a}
.problem-card:hover,.equipment-card:hover{border-color:#88b5de;text-decoration:none;box-shadow:0 12px 30px #1e46621a}
.problem-symbol{font-size:14px;color:var(--brand);font-weight:850}
.problem-card h3{font-size:20px;line-height:1.5;margin:0}
.problem-card p{font-size:14px;color:#53697d;line-height:1.75;margin:0}
.card-action{font-weight:800;color:#1763b5;font-size:14px;display:block;margin-top:auto}
.diagram-explain{background:#fff;border:1px solid #d4e1eb;border-radius:19px;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.8fr);gap:0;overflow:hidden}
.diagram-preview{background:#f7faff;display:grid;place-items:center;padding:18px;border-right:1px solid #dbe7f0}
.diagram-preview img{width:100%;height:auto;object-fit:contain;max-height:300px}
.diagram-copy{padding:27px 28px;display:flex;flex-direction:column;justify-content:center}
.diagram-label{font-size:12px;color:#1763b5;font-weight:750;margin:0 0 7px}
.diagram-copy h3{margin:0 0 9px;font-size:25px}
.diagram-copy p{font-size:15px;margin:0;color:#52697c}
.action-stack{display:flex;flex-direction:column;gap:14px;align-items:flex-start;margin-top:23px}
.text-link{font-weight:700;color:#1763b5}
.equipment-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.equipment-card{display:grid;grid-template-columns:43% minmax(0,1fr);overflow:hidden;min-height:225px;background:#fff;border:1px solid var(--line);border-radius:17px;color:var(--ink)}
.equipment-card img{width:100%;height:100%;min-height:220px;max-height:280px;object-fit:cover}
.equipment-copy{display:flex;flex-direction:column;gap:8px;padding:23px 21px}
.equipment-tag{font-size:12px;color:#1763b5;font-weight:750;line-height:1.5}
.equipment-copy h3{font-size:22px;margin:0;line-height:1.4}
.equipment-copy p{font-size:14px;color:#53697d;margin:0;line-height:1.7}
.section-after{font-size:14px;margin:21px 0 0;color:#53697d}
.learn-feature{display:grid;grid-template-columns:45% minmax(0,1fr);align-items:center;gap:30px;background:#fff;border:1px solid var(--line);padding:22px;border-radius:17px}
.learn-feature img{width:100%;height:auto;object-fit:contain;background:#f4f8ff;border-radius:11px}
.learn-feature h2{font-size:26px}
.learn-feature p{font-size:14px;color:#53697d}
.article-guided{max-width:910px}
.article-intro{font-size:17px;color:#40586b;line-height:1.9}
.answer-box{background:#edf5fd;border-left:4px solid #1763b5;padding:18px 20px;border-radius:11px;margin:24px 0;font-size:15px}
.decision-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:18px 0 26px}
.decision-card{padding:17px;background:#f7fafc;border:1px solid var(--line);border-radius:12px;display:flex;flex-direction:column;gap:7px;min-width:0}
.decision-tag{font-size:12px;color:#1763b5;font-weight:700}
.decision-card h3{font-size:16px;margin:0;line-height:1.55}
.decision-card p{font-size:13px;color:#53697d;margin:0;line-height:1.8}
.decision-card a{margin-top:auto;font-size:13px;font-weight:750}
.comparison-cards{display:grid;gap:13px}
.comparison-card{border:1px solid var(--line);background:#fff;border-radius:13px;display:grid;grid-template-columns:200px minmax(0,1fr);overflow:hidden}
.comparison-card img{height:100%;min-height:167px;width:100%;object-fit:cover}
.comparison-card>div{padding:15px 20px}
.comparison-card h3{font-size:20px;margin:0}
.comparison-card p{font-size:14px;margin:7px 0 10px}
.comparison-card a{font-weight:750}
.checklist-box{padding:13px 20px;background:#f4f8fc;border-radius:13px}
.checklist-box li{margin:7px 0}
.next-action{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:21px;margin:28px 0;background:#ecf4fc;border-radius:15px}
.next-action p{margin:6px 0 0;font-size:14px;color:#53697d}
.next-action .btn{flex:none}
.article-directory{max-width:820px}
.directory-section{padding:24px 0 14px;border-top:1px solid #dbe6ee}
.directory-section h2{border:none;padding:0;margin:0 0 15px;font-size:23px}
.directory-list{display:grid;gap:10px}
.directory-list a{display:flex;align-items:center;gap:16px;background:#fff;padding:16px 17px;border:1px solid #dce6ef;border-radius:12px;color:#17324a;text-decoration:none}
.directory-list a:hover{border-color:#9abfe1;background:#f9fcff}
.directory-list a>div{flex:1;display:grid;gap:4px}
.directory-list strong,.directory-highlight strong{font-size:17px}
.directory-list small,.directory-highlight small{font-size:13px;color:#526b7f}
.directory-num{display:grid;place-items:center;border-radius:10px;background:#edf5fd;color:#1763b5;font-weight:900;min-width:38px;height:38px;font-size:13px}
.directory-highlight{display:grid;grid-template-columns:240px 1fr;gap:17px;background:#fff;border:1px solid var(--line);border-radius:13px;padding:10px;align-items:center}
.directory-highlight img{width:100%;height:139px;object-fit:cover;object-position:top;border-radius:8px}
.directory-highlight div{display:grid;gap:7px}
.directory-highlight span{font-size:13px;font-weight:750;color:var(--brand)}
.directory-highlight:hover{text-decoration:none;border-color:#9abfe1}
@media(max-width:1000px){.home-intro-grid{grid-template-columns:minmax(0,1fr) minmax(295px,360px);gap:28px}.equipment-card{grid-template-columns:1fr}.equipment-card img{height:180px;min-height:0}.problem-card{padding:20px}}
@media(max-width:800px){.site-nav-row{min-height:66px}.global-nav{display:none!important}.mobile-menu{display:block;position:relative;margin-left:auto}.mobile-menu summary{cursor:pointer;list-style:none;border:1px solid #c7d9e9;border-radius:9px;padding:8px 11px;font-size:14px;font-weight:750;color:#173b57}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-menu summary span{padding-left:7px}.mobile-menu nav{position:absolute;right:0;top:43px;display:flex;flex-direction:column;gap:0;min-width:220px;padding:8px;background:#fff;border:1px solid #d7e2ed;border-radius:12px;box-shadow:0 12px 25px #12304426;z-index:30}.mobile-menu nav a{padding:10px 14px;font-size:15px;color:#183b55;border-radius:7px}.mobile-menu nav a:hover{background:#eff6fc;text-decoration:none}.home-intro-grid{grid-template-columns:1fr;gap:23px}.path-preview{max-width:none}.problem-grid{grid-template-columns:1fr}.problem-card{min-height:0;gap:7px}.diagram-explain{grid-template-columns:1fr}.diagram-preview{border-right:0;border-bottom:1px solid #dbe7f0}.equipment-grid{grid-template-columns:1fr}.equipment-card{grid-template-columns:42% 1fr}.equipment-card img{height:100%;min-height:180px}.learn-feature{grid-template-columns:1fr}.learn-feature img{max-height:260px}.decision-grid{grid-template-columns:1fr}.footer-inner{flex-direction:column}.footer-bottom{flex-direction:column}}
@media(max-width:580px){.site-nav-row{padding:9px 0;gap:10px}.brand-mark{width:34px;height:34px;font-size:19px}.brand-text strong{font-size:16px}.brand-text small{font-size:10px}.home-intro{padding:34px 0 37px}.intro-copy h1{font-size:33px}.intro-lead{font-size:15px}.intro-actions{display:grid;gap:8px}.intro-actions .btn{width:100%;justify-content:center}.path-preview{padding:17px 20px}.home-section{padding:42px 0 46px}.home-section h2{font-size:24px}.section-lead{font-size:14px}.problem-card h3{font-size:18px}.diagram-copy{padding:21px}.diagram-preview{padding:12px}.diagram-preview img{max-height:210px}.equipment-card{grid-template-columns:1fr}.equipment-card img{height:200px;min-height:0}.equipment-copy{padding:18px}.learn-feature{padding:13px}.learn-feature h2{font-size:23px}.comparison-card{grid-template-columns:1fr}.comparison-card img{height:180px;min-height:0}.next-action{flex-direction:column;align-items:start}.next-action .btn{width:100%}.directory-highlight{grid-template-columns:1fr}.directory-highlight img{height:150px}.footer-nav{gap:10px}.article-guided .article-intro{font-size:15px}}

/* Contextual images and diagnosis handoff */
.explainer-figure{margin:27px 0 25px;padding:17px 18px;background:#f7fafc;border:1px solid #dce8f1;border-radius:15px}
.explainer-figure .article-visual{margin:15px 0 0}
.explainer-figure .article-visual img{background:#fff}
.explainer-figure .article-visual figcaption{margin-bottom:0}
.explainer-heading{font-size:20px!important;line-height:1.5;margin:0 0 8px!important;padding:0!important;border-top:none!important}
.explainer-figure>p,.explainer-photo>p,.figure-intro{font-size:14px;line-height:1.8;color:#52697b;margin:0 0 10px}
.explainer-photo{margin:25px 0;border-left:3px solid #bad3ea;padding:15px 17px;background:#f7fafc;border-radius:11px}
.explainer-photo .article-photo{margin:12px 0 0}
.diagnosis-next{display:flex;flex-direction:column;gap:5px;border-top:1px solid #c9dfef;margin-top:16px;padding-top:14px}
.diagnosis-next span{font-size:12px;font-weight:750;color:#52697b}
.diagnosis-next a{font-size:16px;font-weight:800}
.diagnosis-explanation{margin-top:22px}
.article-guided .article-toc{margin-top:20px}
.article-guided .article-toc ol{columns:1}
.article-guided h2,.article-directory h2{scroll-margin-top:18px}
@media(max-width:580px){.explainer-figure{margin:23px -9px;padding:12px}.explainer-photo{padding:14px}.article-guided .article-toc{padding:15px}}

/* Readable yes/no flow in the homepage: detail stays inside the help article */
.mini-decision{width:100%;max-width:430px;display:flex;flex-direction:column;align-items:center;gap:8px;padding:18px 10px;color:#153650;text-align:center}
.mini-label{display:block;background:#1763b5;color:#fff;padding:10px 15px;border-radius:12px;font-size:16px;font-weight:800;width:min(100%,270px)}
.mini-down{font-size:21px;color:#7196b7;font-weight:800;line-height:1}
.mini-question{display:block;background:#fff;border:1px solid #b4cfe8;border-radius:10px;padding:11px 13px;font-size:18px;width:min(100%,265px)}
.mini-branches{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;width:100%;padding-top:12px}
.mini-branches>div{display:flex;flex-direction:column;align-items:center;gap:5px;padding:13px 8px;border-radius:12px;background:#edf5fc;border:1px solid #c9ddef}
.mini-branches>div:nth-child(2){background:#eaf7f2;border-color:#c4e3d7}
.mini-option{display:inline-block;background:#1763b5;color:#fff;border-radius:7px;font-size:12px;font-weight:800;padding:3px 9px}
.mini-branches>div:nth-child(2) .mini-option{background:#13795a}
.mini-branches strong{font-size:15px;line-height:1.45}
.mini-branches small{font-size:11px;color:#557183;line-height:1.5}
@media(max-width:580px){.mini-decision{padding:17px 6px}.mini-branches{gap:7px}.mini-branches strong{font-size:14px}}

/* Clear, short troubleshooting guide */
.mobile-explainer{display:none}
.responsive-explainer{margin:18px 0 28px}
.desktop-explainer .article-visual{margin:0}
.simple-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}
.simple-actions>div{padding:18px;background:#f7fafc;border:1px solid var(--line);border-radius:12px;min-width:0}
.simple-actions span{display:block;font-weight:800;color:#1763b5;font-size:13px;margin-bottom:5px}
.simple-actions strong{display:block;font-size:16px;line-height:1.5}
.simple-actions p{font-size:14px;line-height:1.7;margin:6px 0 0;color:#52697d}
@media(max-width:620px){.desktop-explainer{display:none}.mobile-explainer{display:block}.responsive-explainer{padding:9px 7px}.simple-actions{grid-template-columns:1fr}.simple-actions>div{padding:14px}}

/* Practical diagnosis layout */
.diagnosis-page{max-width:900px}
.diagnosis-page h1{font-size:clamp(29px,4.3vw,43px);line-height:1.32;margin:8px 0 14px}
.diag-h1-accent{color:#1763b5}
.diag-lead{color:#4c6478;font-size:16px;line-height:1.85;margin:0 0 23px}
.diag-lead strong{color:#143951}
.diagnosis-topics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:24px 0 32px}
.diagnosis-topics>div{background:#f3f8fd;border:1px solid #dce8f4;border-radius:13px;padding:15px}
.diagnosis-topics .topic-num{color:#1763b5;font-weight:850;font-size:12px;display:block;margin-bottom:6px}
.diagnosis-topics strong{display:block;font-size:15px;color:#17334c}
.diagnosis-topics small{display:block;font-size:12px;color:#5b7183;margin-top:5px;line-height:1.55}
.diagnosis-form{display:grid;gap:18px}
.diag-question{min-width:0;border:1px solid #e1e9f2;border-radius:15px;padding:19px 20px 21px;margin:0;background:#fff}
.diag-question legend{float:left;width:100%;padding:0;margin-bottom:14px;font-weight:800;color:#18374f;font-size:18px}
.diag-question legend:after{content:"";display:block;clear:both}
.q-number{font-size:12px;font-weight:850;color:#1a65bb;background:#edf5ff;border-radius:7px;padding:5px 7px;margin-right:6px}
.q-help{clear:both;color:#5b7080;font-size:13px;margin:0 0 12px}
.diag-choices{clear:both;display:grid;gap:9px}
.diag-choices-main{grid-template-columns:repeat(3,minmax(0,1fr))}
.diag-choices-secondary{grid-template-columns:repeat(4,minmax(0,1fr))}
.diag-choices label{display:block;cursor:pointer;min-width:0;position:relative}
.diag-choices input{position:absolute;width:1px;height:1px;clip-path:inset(50%);overflow:hidden}
.diag-choice{display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:4px;min-height:57px;border:1px solid #ccdce9;padding:12px 13px;border-radius:11px;background:#fff}
.diag-choices-main .diag-choice{min-height:114px}
.diag-choice .choice-icon{font-size:25px;color:#1d6cc0;line-height:1;font-weight:700;margin-bottom:3px}
.diag-choice strong{color:#1a374f;font-size:14px;line-height:1.5}
.diag-choice small{font-size:12px;color:#60778a;line-height:1.5}
.diag-choices input:checked+.diag-choice{background:#eaf4ff;border:2px solid #1763b5;padding:11px 12px;box-shadow:0 0 0 1px #bdd8f5}
.diag-choices input:focus-visible+.diag-choice{outline:3px solid #9fc4ee;outline-offset:3px}
.diag-choices label:hover .diag-choice{border-color:#6b9bd0}
.diagnosis-submit{background:#f5f9fd;border-radius:14px;padding:17px 18px 19px}
.diagnosis-submit .btn{display:flex;width:100%;padding:14px;justify-content:center;font-size:17px}
.diagnosis-submit>p{font-size:12px;color:#607589;margin:10px 0 0;text-align:center}
.diagnosis-result{scroll-margin-top:16px;margin-top:38px;padding-top:12px;border-top:2px solid #e2eaf2}
.diagnosis-result[hidden]{display:none}
.diagnosis-result-head{background:#eef6fe;border:1px solid #cfe3f5;padding:26px 26px 23px;border-radius:17px;outline:none}
.result-eyebrow{font-size:13px;font-weight:800;color:#1763b5;display:block;margin-bottom:11px}
.diagnosis-result-head h2{font-size:clamp(23px,3vw,30px);margin:0 0 10px;border:0;padding:0;line-height:1.45}
.diagnosis-result-head p{font-size:15px;color:#445d72;margin:0;line-height:1.8}
.diagnosis-answer-tags{display:flex;gap:7px;flex-wrap:wrap;margin-top:19px}
.diagnosis-answer-tags span{font-size:12px;color:#456681;background:#fff;border:1px solid #d6e5f1;border-radius:40px;padding:4px 10px;line-height:1.45}
.diagnosis-route-card{margin:23px 0;padding:24px;background:#fff;border:1px solid #dee9f1;border-radius:15px}
.diagnosis-route-card>h3,.diagnosis-steps>h3{font-size:22px;margin:0 0 15px}
.network-route{display:flex;align-items:center;justify-content:space-between;gap:5px;padding:15px;background:#f6f9fd;border-radius:13px}
.network-part{flex:1;min-width:0;display:flex;align-items:center;flex-direction:column;justify-content:center;padding:12px 5px;gap:5px;background:#fff;border:1px solid #d9e5ef;border-radius:11px;min-height:84px}
.network-part strong{font-size:13px;white-space:nowrap;color:#496075}
.network-icon{font-size:23px;color:#91a5b8;font-weight:850;line-height:1}
.network-part.is-focus{border:2px solid #1763b5;background:#e9f3ff;padding:11px 4px}
.network-part.is-focus strong,.network-part.is-focus .network-icon{color:#135ba6}
.network-arrow{font-size:20px;color:#8ba6be;flex:none}
.network-note{font-size:12px;color:#5f7385;margin:8px 0 0}
.why-this{margin:16px 0 0;font-size:14px;color:#405d74;line-height:1.75}
.why-this strong{color:#123956}
.diag-context-photo{display:flex;align-items:center;gap:17px;margin:17px 0 0;padding-top:16px;border-top:1px solid #e4ecf3}
.diag-context-photo img{width:156px;height:95px;object-fit:cover;border-radius:10px}
.diag-context-photo figcaption{color:#617487;font-size:12px;line-height:1.6}
.diagnosis-steps{margin-top:28px}
.diagnosis-steps ol{list-style:none;margin:0;padding:0;display:grid;gap:13px}
.diagnosis-action{display:flex;gap:15px;padding:19px;background:#fff;border:1px solid #dce7f0;border-radius:15px}
.action-number{display:grid;place-items:center;width:38px;height:38px;flex:none;border-radius:12px;background:#e9f4ff;color:#1861ad;font-size:13px;font-weight:850}
.diagnosis-action>div{min-width:0;flex:1}
.diagnosis-action>div>strong{font-size:18px;color:#16344b;display:block;line-height:1.5}
.diagnosis-action>div>p{font-size:15px;color:#445d70;line-height:1.85;margin:7px 0 13px}
.action-interpret{background:#f0f7fd;border-radius:10px;padding:10px 13px;border-left:3px solid #a9ceeb}
.action-interpret span{font-size:12px;color:#1763b5;font-weight:850;display:block;margin-bottom:2px}
.action-interpret p{font-size:13px;color:#38576e;line-height:1.8;margin:0}
.diagnosis-followup{background:#f4f9fd;border:1px solid #d8e6f0;border-radius:15px;padding:23px;margin-top:26px}
.diagnosis-followup h3{font-size:20px;margin:0 0 5px}
.diagnosis-followup>p{font-size:14px;color:#597285;margin:0 0 16px}
.followup-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}
.followup-options button{border:1px solid #b3cde2;background:white;color:#175b9b;border-radius:9px;padding:12px 10px;font-weight:800;cursor:pointer}
.followup-options button:hover,.followup-options button[aria-pressed=true]{color:white;background:#1763b5;border-color:#1763b5}
.diagnosis-feedback:empty{display:none}
.diagnosis-feedback{background:white;border:1px solid #cce1ee;border-radius:11px;margin-top:14px;padding:15px}
.diagnosis-feedback strong{font-size:16px;color:#153951}
.diagnosis-feedback p{font-size:14px;margin:5px 0 0;line-height:1.85;color:#455f72}
.diagnosis-bottom{border-top:1px solid #e2ebf2;margin-top:25px;padding-top:18px}
.diagnosis-bottom p{font-size:14px;margin:10px 0;line-height:1.75}
.diagnosis-source{color:#607889}
.diagnosis-tools{display:flex;gap:10px;flex-wrap:wrap;margin-top:17px}
.diagnosis-tools button{border:1px solid #bfd4e6;border-radius:9px;background:#fff;color:#195e9e;font-weight:750;cursor:pointer;padding:10px 15px}
.diagnosis-tools button:hover{background:#ecf5ff}
.diagnosis-disclaimer{background:#f6f8fb;border:1px solid #e1e8ef;border-radius:13px;margin-top:30px;padding:19px}
.diagnosis-disclaimer>strong{font-size:15px}
.diagnosis-disclaimer p{font-size:12px;color:#647a8c;margin:6px 0 0;line-height:1.85}
@media(max-width:810px){.diagnosis-topics{grid-template-columns:1fr 1fr 1fr}.diag-choices-main{grid-template-columns:repeat(2,minmax(0,1fr))}.diag-choices-secondary{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:580px){
.diagnosis-page{padding:23px 17px}
.diagnosis-page h1{font-size:31px}
.diag-lead{font-size:15px;line-height:1.8}
.diagnosis-topics{grid-template-columns:1fr;gap:7px;margin:18px 0 22px}
.diagnosis-topics>div{display:flex;align-items:center;gap:11px;padding:10px 13px}
.diagnosis-topics .topic-num{margin:0;width:25px}
.diagnosis-topics strong{font-size:14px;flex-shrink:0}
.diagnosis-topics small{margin:0;font-size:11px}
.diagnosis-form{gap:13px}
.diag-question{padding:14px 12px 17px}
.diag-question legend{font-size:16px;margin-bottom:12px}
.diag-choices-main{grid-template-columns:repeat(2,minmax(0,1fr))}
.diag-choices-secondary{grid-template-columns:repeat(2,minmax(0,1fr))}
.diag-choice{padding:11px 10px;min-height:55px}
.diag-choices-main .diag-choice{min-height:107px}
.diag-choice strong{font-size:13px}
.diag-choice small{font-size:11px}
.diagnosis-result-head{padding:22px 17px}
.diagnosis-result-head h2{font-size:24px}
.diagnosis-result-head p{font-size:14px}
.diagnosis-route-card{padding:17px 12px}
.diagnosis-route-card>h3,.diagnosis-steps>h3{font-size:20px}
.network-route{padding:9px 5px;gap:2px}
.network-part{padding:11px 1px;min-height:69px}
.network-part.is-focus{padding:10px 0}
.network-part strong{font-size:10px}
.network-icon{font-size:19px}
.network-arrow{font-size:12px}
.diag-context-photo img{width:110px;height:78px}
.diagnosis-action{padding:14px 12px;gap:10px}
.diagnosis-action>div>strong{font-size:16px}
.diagnosis-action>div>p{font-size:14px}
.diagnosis-followup{padding:17px 12px}
.followup-options{grid-template-columns:1fr;gap:8px}
}

/* One-question-at-a-time wizard */
.diagnosis-progress{background:#f4f8fc;border-radius:13px;padding:16px 19px}
.diagnosis-progress>div:first-child{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:11px}
.diagnosis-progress strong{font-size:15px;color:#17466e}
.diagnosis-progress>div>span{font-size:12px;color:#657c8e}
.progress-track{width:100%;height:7px;border-radius:99px;background:#d8e8f6;overflow:hidden}
#diagnosis-progress-bar{height:100%;width:20%;background:#1763b5;transition:width .18s ease;border-radius:99px}
.diagnosis-wizard-controls{display:flex;align-items:center;justify-content:space-between;gap:10px}
.diagnosis-wizard-controls button{padding:13px 18px;border-radius:10px;font-size:15px;font-weight:800;cursor:pointer}
.wizard-next{background:#1763b5;color:#fff;border:1px solid #1763b5;margin-left:auto;min-width:150px}
.wizard-back{background:white;color:#175b99;border:1px solid #b8d2e9}
.diagnosis-question-warning{font-size:13px;color:#af3b37;background:#fff4f2;padding:10px 12px;border-radius:9px;margin:0}
.diagnosis-form>[hidden]{display:none!important}
@media(max-width:580px){.diagnosis-progress{padding:13px}.diagnosis-progress>div>span{font-size:11px}.diagnosis-wizard-controls button{padding:12px 14px}}