/*
Theme Name: FastenerBench
Theme URI: https://fastenerbench.com/
Author: FastenerBench Editorial Team
Description: Custom image-forward technical authority theme for FastenerBench.com.
Version: 0.8.0
Text Domain: fastenerbench
*/
:root{--bg:#0e1317;--panel:#171d21;--panel2:#20272c;--text:#f5f7f8;--muted:#b8c0c5;--accent:#ff6a1a;--line:#344047;--paper:#f7f7f5;--ink:#111820;--max:1320px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.55}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto}.wrap{width:min(var(--max),calc(100% - 40px));margin:auto}.site-header{position:sticky;top:0;z-index:50;background:rgba(12,16,19,.97);border-bottom:1px solid #252d32}.header-inner{display:flex;align-items:center;gap:28px;min-height:72px}.brand{font-size:28px;font-weight:800;white-space:nowrap}.brand span{color:var(--accent)}.brand small{display:block;font-size:11px;font-weight:500;color:#c5cbd0;letter-spacing:.02em}.main-nav{display:flex;gap:20px;font-size:14px;font-weight:700;flex:1}.search-link{padding:10px 14px;border:1px solid #39444a;border-radius:6px;color:#d8dde0}.hero{padding:52px 0 20px;background:radial-gradient(circle at 75% 35%,#293037 0,#101519 45%,#0c1114 78%)}.eyebrow{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:#c8ced2}.hero h1{font-size:clamp(44px,6vw,86px);line-height:.95;max-width:830px;margin:12px 0 16px}.hero h1 em{font-style:normal;color:var(--accent)}.hero p{max-width:720px;color:#d0d5d8;font-size:20px}.problem-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-top:30px}.problem-card{background:var(--panel);border:1px solid #354149;border-radius:6px;overflow:hidden;min-height:190px}.problem-media{height:110px;background:linear-gradient(135deg,#2b3236,#11171b);display:grid;place-items:center;color:#7f8a91;font-weight:700}.problem-card h3{margin:14px 14px 0;font-size:18px}.problem-card p{font-size:13px;margin:4px 14px 16px;color:var(--muted)}.tools-strip{background:#12191e;border-top:1px solid #263038;border-bottom:1px solid #263038;padding:18px 0}.tools-grid{display:grid;grid-template-columns:180px repeat(5,1fr);gap:10px;align-items:stretch}.tools-label{font-weight:800;font-size:20px}.tool-chip{background:#1b2329;border:1px solid #334049;padding:14px;border-radius:6px}.tool-chip strong{display:block}.tool-chip span{font-size:12px;color:var(--muted)}.section{padding:42px 0}.section h2{font-size:32px;margin:0 0 8px}.section-sub{color:var(--muted);margin:0 0 22px}.guide-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.guide-card{background:#151c21;border:1px solid #303b42;border-radius:6px;overflow:hidden}.guide-media{aspect-ratio:16/9;background:linear-gradient(135deg,#252d32,#0d1215)}.guide-body{padding:16px}.tag{display:inline-block;background:var(--accent);color:#111;font-size:10px;font-weight:900;padding:3px 7px;margin-bottom:8px}.guide-card h3{margin:0 0 8px}.guide-card p{color:var(--muted);font-size:14px}.trust{background:#e8e8e4;color:var(--ink);padding:34px 0}.trust-grid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:22px}.trust strong{display:block;margin-bottom:6px}.site-footer{padding:28px 0;color:#b6bec3;border-top:1px solid #242e34}.article-shell{background:var(--paper);color:var(--ink);min-height:70vh;padding:44px 0}.article-grid{display:grid;grid-template-columns:minmax(0,820px) 280px;gap:46px}.article-content h1{font-size:48px;line-height:1.04;margin:0 0 16px}.quick-box{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;background:#eef0f1;border-left:5px solid var(--accent);padding:14px;margin:24px 0}.quick-box span{font-size:12px;color:#59636b}.quick-box strong{display:block;font-size:14px}.article-content p{font-size:18px}.article-content h2{font-size:30px;margin-top:42px}.breadcrumb{font-size:13px;color:#68727a;margin-bottom:18px}.sidebar-box{background:#fff;border:1px solid #d7dbde;padding:18px;position:sticky;top:96px}
@media(max-width:1050px){.main-nav{display:none}.problem-grid{grid-template-columns:repeat(3,1fr)}.tools-grid{grid-template-columns:1fr repeat(2,1fr)}.guide-grid{grid-template-columns:repeat(2,1fr)}.article-grid{grid-template-columns:1fr}.sidebar-box{position:static}.trust-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.wrap{width:min(100% - 24px,var(--max))}.hero{padding-top:32px}.hero h1{font-size:46px}.problem-grid{grid-template-columns:repeat(2,1fr)}.tools-grid{grid-template-columns:1fr}.guide-grid{grid-template-columns:1fr}.quick-box{grid-template-columns:repeat(2,1fr)}.trust-grid{grid-template-columns:1fr}.article-content h1{font-size:38px}}


/* v0.2 authority article system */
.article-header{margin-bottom:24px}.article-kicker,.eyebrow{font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:800;color:#a74b18}.article-deck{font-size:21px!important;line-height:1.55;color:#46515a;margin:0 0 14px;max-width:760px}.article-meta{font-size:13px;color:#747e85}.article-hero{margin:26px 0 30px}.article-hero img{width:100%;border-radius:8px;display:block}.article-hero figcaption{font-size:12px;color:#6f777d;margin-top:8px}.repair-snapshot{border:1px solid #d1d7da;background:#fff;border-top:5px solid var(--accent);margin:28px 0 34px;box-shadow:0 10px 28px rgba(15,24,30,.06)}.snapshot-title{display:flex;justify-content:space-between;gap:20px;padding:14px 18px;border-bottom:1px solid #e1e5e7}.snapshot-title span{font-weight:900;text-transform:uppercase;letter-spacing:.06em}.snapshot-title small{color:#657079}.snapshot-grid{display:grid;grid-template-columns:repeat(5,1fr)}.snapshot-grid>div{padding:14px 16px;border-right:1px solid #e2e6e8}.snapshot-grid>div:last-child{border-right:0}.snapshot-grid span{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:#69747b}.snapshot-grid strong{display:block;margin-top:4px;font-size:15px}.entry-body{font-size:18px}.entry-body>p,.entry-body>ul,.entry-body>ol,.entry-body>blockquote{max-width:760px}.entry-body h2{font-size:32px;line-height:1.15;margin-top:52px;margin-bottom:16px}.entry-body h3{font-size:23px;margin-top:34px}.entry-body figure{margin:34px 0}.entry-body img{border-radius:7px}.entry-body figcaption{font-size:13px;color:#67727a}.entry-body table{width:100%;border-collapse:collapse;background:#fff;margin:28px 0;font-size:15px}.entry-body th,.entry-body td{border:1px solid #d9dee1;padding:12px 14px;text-align:left;vertical-align:top}.entry-body th{background:#182126;color:#fff}.fb-callout,.fb-decision{max-width:800px;margin:30px 0;padding:20px 22px;border-radius:7px;background:#fff;border:1px solid #d8dee1;box-shadow:0 8px 24px rgba(15,24,30,.05)}.fb-callout h3,.fb-decision h3{margin:0 0 8px;font-size:20px}.fb-callout p:last-child,.fb-decision p:last-child{margin-bottom:0}.fb-quick-answer{border-left:6px solid #21718c;background:#f4fafc}.fb-warning{border-left:6px solid #c94b2b;background:#fff7f4}.fb-why{border-left:6px solid #b07a22;background:#fffaf0}.fb-decision{border-left:6px solid var(--accent);background:#151d22;color:#eef2f4}.fb-decision strong{color:#fff}.fb-decision li{margin:10px 0}.article-footer{margin-top:54px;padding:22px;border-top:1px solid #d5dade;border-bottom:1px solid #d5dade;display:flex;justify-content:space-between;gap:24px;align-items:center}.article-footer-label{display:block;text-transform:uppercase;font-size:11px;letter-spacing:.1em;color:#7b858b}.article-footer p{font-size:14px;max-width:620px;margin:5px 0 0}.button-secondary{border:1px solid #28343b;padding:10px 14px;border-radius:5px;font-weight:800;white-space:nowrap}.article-sidebar{min-width:0}.article-toc nav{display:flex;flex-direction:column;margin-top:12px}.article-toc a{padding:7px 0;border-top:1px solid #e4e7e9;font-size:13px;color:#39464e}.article-toc a.toc-sub{padding-left:13px;color:#68747b}.hub-shell,.tool-shell{background:var(--paper);color:var(--ink);min-height:70vh}.hub-hero,.tool-hero{padding:58px 0 42px;background:linear-gradient(135deg,#141c21,#202b31);color:white}.hub-hero h1,.tool-hero h1{font-size:clamp(44px,5vw,68px);margin:8px 0 12px;line-height:1}.hub-intro,.tool-hero p{max-width:760px;font-size:20px;color:#d2d9dd}.hub-section-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:20px}.hub-section-head h2{margin:5px 0 0}.guide-placeholder{display:grid;place-items:center;color:#77838a;font-size:10px;letter-spacing:.18em}.card-link{font-size:13px;font-weight:800;color:#ff7b31}.empty-authority{grid-column:1/-1;border:1px dashed #bbc3c8;background:#fff;padding:30px}.narrow{max-width:920px}.tool-panel{background:#fff;border:1px solid #d3dadd;border-top:5px solid var(--accent);padding:26px;box-shadow:0 12px 30px rgba(15,24,30,.07)}.tool-panel form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.tool-panel label{display:flex;flex-direction:column;gap:7px;font-size:13px;font-weight:800;color:#3e4950}.tool-panel input,.tool-panel select{width:100%;padding:12px 13px;border:1px solid #bac3c8;border-radius:5px;background:#fff;font:inherit}.tool-panel button{align-self:end;background:var(--accent);border:0;padding:13px 18px;border-radius:5px;font-weight:900;cursor:pointer}.tool-result{grid-column:1/-1;min-height:74px;padding:16px;border-radius:5px;background:#edf2f4;border:1px solid #d5dde1}.tool-result strong,.tool-result span{display:block}.tool-result span{margin-top:6px;color:#5f6b72;font-weight:400}.tool-note{margin-top:20px;background:#1a2328;color:#edf1f3;padding:18px;border-left:5px solid var(--accent)}.tool-note p{margin:5px 0 0;color:#c6ced2}.wp-block-image.alignwide,.wp-block-gallery.alignwide{width:min(1040px,calc(100vw - 60px));max-width:none;margin-left:50%;transform:translateX(-50%)}
@media(max-width:1050px){.snapshot-grid{grid-template-columns:repeat(3,1fr)}.snapshot-grid>div{border-bottom:1px solid #e2e6e8}.wp-block-image.alignwide,.wp-block-gallery.alignwide{width:100%;margin-left:0;transform:none}}
@media(max-width:640px){.article-deck{font-size:18px!important}.snapshot-title{display:block}.snapshot-title small{display:block;margin-top:4px}.snapshot-grid{grid-template-columns:repeat(2,1fr)}.tool-panel form{grid-template-columns:1fr}.article-footer{display:block}.button-secondary{display:inline-block;margin-top:16px}.entry-body h2{font-size:28px}}


/* v0.3 content-production visual system */
.fb-tool-checklist,.fb-method-compare,.fb-source-note{max-width:820px;margin:30px 0;border:1px solid #d7dde0;background:#fff;box-shadow:0 8px 24px rgba(15,24,30,.045);border-radius:8px;padding:21px 23px}.fb-tool-checklist{border-top:5px solid #3d6678}.fb-source-note{background:#f2f4f5;border-left:5px solid #6e7b82}.fb-tool-checklist h3,.fb-method-compare h3,.fb-source-note h3{margin:0 0 12px}.fb-tool-checklist ul{columns:2;column-gap:34px;padding-left:20px}.fb-tool-checklist li{break-inside:avoid;margin:8px 0}.fb-method-steps{margin:34px 0;max-width:820px}.fb-method-steps>h3{margin-bottom:16px}.fb-step{display:grid;grid-template-columns:44px 1fr;gap:16px;align-items:start;background:#fff;border:1px solid #d9dee1;padding:18px 20px;margin:12px 0;border-radius:7px}.fb-step>strong{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:#171f24;color:#fff;font-size:16px}.fb-step h4{font-size:18px;margin:1px 0 5px}.fb-step p{font-size:16px!important;margin:0;color:#536068}.fb-method-compare table{margin-bottom:0}.fb-related{margin-top:48px;padding-top:28px;border-top:1px solid #d1d8dc}.fb-related-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:18px}.fb-related-head h2{margin:0}.fb-related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.fb-related-card{display:grid;grid-template-columns:120px 1fr;background:#fff;border:1px solid #d8dde0;border-radius:7px;overflow:hidden;min-height:105px}.fb-related-thumb{background:linear-gradient(135deg,#2b3338,#141a1e);min-height:105px}.fb-related-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0}.fb-related-copy{padding:14px}.fb-related-copy span{display:block;font-size:10px;letter-spacing:.09em;text-transform:uppercase;color:#9a4a1e;font-weight:900}.fb-related-copy strong{display:block;margin-top:4px;line-height:1.25}.fb-visual-note{font-size:12px;color:#6d777d;margin-top:10px}.article-content blockquote{border-left:5px solid var(--accent);padding:12px 20px;margin:28px 0;background:#fff;font-size:20px}.article-content .wp-block-columns{gap:24px;margin:30px 0}.article-content .wp-block-column{background:#fff;border:1px solid #e0e4e6;padding:20px}.article-content hr{border:0;border-top:1px solid #d7dcdf;margin:40px 0}
@media(max-width:760px){.fb-tool-checklist ul{columns:1}.fb-related-grid{grid-template-columns:1fr}.fb-related-card{grid-template-columns:92px 1fr}}


/* v0.4 production editorial polish */
.fb-product-term{font-weight:700;text-decoration:underline;text-decoration-style:dotted;text-underline-offset:3px}.fb-affiliate-text{font-weight:800;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px}.fb-affiliate-text:after{content:" ↗";font-size:.8em}.fb-source-note ul{margin:10px 0 0;padding-left:20px}.fb-source-note li{margin:7px 0}.fb-source-note a{text-decoration:underline;text-underline-offset:2px}.entry-body>h2{position:relative;padding-top:4px}.entry-body>h2:before{content:"";display:block;width:46px;height:4px;background:var(--accent);margin-bottom:12px}.entry-body>p:first-of-type{font-size:19px;line-height:1.75}.fb-method-compare{overflow-x:auto}.fb-method-compare table{min-width:660px}.fb-callout,.fb-tool-checklist,.fb-method-compare,.fb-source-note{scroll-margin-top:100px}.article-content a{overflow-wrap:anywhere}.article-content .fb-affiliate-text{color:#8f3f14}.article-content .fb-source-note a{color:#2f6279}.article-sidebar .sidebar-box+.sidebar-box{margin-top:16px}


/* v0.5 image-forward authority article system */
.fb-tech-figure{margin:34px 0;background:#11181c;border:1px solid #303b41;border-radius:9px;overflow:hidden;box-shadow:0 14px 34px rgba(12,18,22,.12)}
.fb-tech-figure img{display:block;width:100%;height:auto}.fb-tech-figure figcaption{padding:13px 16px;color:#d8dfe2;background:#182126;font-size:13px;line-height:1.5}.fb-tech-figure figcaption strong{color:#fff}.fb-tech-figure.is-wide{width:min(1040px,calc(100vw - 60px));max-width:none;margin-left:50%;transform:translateX(-50%)}
.fb-visual-pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:32px 0}.fb-visual-pair figure{margin:0}.fb-diagram-card{background:#fff;border:1px solid #d8dde0;border-radius:8px;padding:18px;box-shadow:0 8px 24px rgba(15,24,30,.05)}.fb-diagram-card .label{font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:#9a4a1e;font-weight:900}.fb-diagram-card h4{margin:4px 0 8px}.fb-diagram-card p{font-size:15px!important;margin:0;color:#59666e}.fb-decision-path{margin:34px 0;padding:24px;background:#182126;color:#f4f6f7;border-radius:9px;border-top:5px solid var(--accent)}.fb-decision-path h3{margin:0 0 16px;color:#fff}.fb-decision-path ol{margin:0;padding-left:24px}.fb-decision-path li{padding:7px 0;color:#d6dde0}.fb-image-caption{font-size:12px;color:#6a747a;margin-top:-20px;margin-bottom:30px}.entry-body>figure img{border-radius:8px}.entry-body>figure figcaption{font-size:13px;color:#667178;margin-top:8px}.article-hero{position:relative}.article-hero:after{content:'FastenerBench visual guide';position:absolute;right:12px;bottom:12px;background:rgba(16,22,26,.86);color:#fff;font-size:10px;font-weight:900;letter-spacing:.08em;text-transform:uppercase;padding:7px 9px;border-radius:4px}
@media(max-width:760px){.fb-visual-pair{grid-template-columns:1fr}.fb-tech-figure.is-wide{width:100%;margin-left:0;transform:none}.article-hero:after{font-size:9px}}


/* v0.7 publication-readiness polish */
.entry-body>h2{scroll-margin-top:100px}.fb-source-note{margin-top:44px}.fb-source-note:before{content:"Reference-led guidance";display:inline-block;font-size:10px;letter-spacing:.11em;text-transform:uppercase;font-weight:900;color:#5f6a71;margin-bottom:8px}.fb-method-compare tbody tr:nth-child(even){background:#f7f8f8}.fb-callout.fb-warning h3{color:#8d2f17}.fb-callout.fb-quick-answer h3{color:#15566d}.repair-snapshot{border-radius:8px;overflow:hidden}.entry-body>p{line-height:1.72}.entry-body li{line-height:1.6}.article-meta{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.article-meta:after{content:"Reference-led technical guidance";border-left:1px solid #d3d8db;padding-left:8px;color:#5f6970}.fb-method-steps .fb-step:hover{border-color:#c7cfd3}.fb-related-card:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(15,24,30,.07)}

/* v0.8 publication polish */
.entry-body h2{margin-top:2.2em}.entry-body h3{margin-top:1.6em}.fb-source-note a{text-decoration-thickness:1px;text-underline-offset:3px}.fb-related-guides{margin-top:48px}.fb-related-card h3{line-height:1.25}.article-hero img{max-height:620px;object-fit:cover}