:root{--bg:#f8fbff;--ink:#0b1f45;--soft:#536985;--line:#d6e4f7;--panel:#fff;--panel-soft:#eef6ff;--blue:#2e78ff;--cyan:#10bcd5;--mint:#20c997;--amber:#f5a524;--shadow:0 24px 80px rgba(15,50,96,.14);--glow:0 0 0 1px rgba(46,120,255,.08),0 22px 70px rgba(46,120,255,.14)}
html[data-theme=dark]{--bg:#091424;--ink:#edf6ff;--soft:#aec3dd;--line:#213b5f;--panel:#0e2036;--panel-soft:#122a45;--blue:#6ba3ff;--cyan:#48d6e6;--mint:#52e1bd;--amber:#ffd166;--shadow:0 28px 88px rgba(0,0,0,.36);--glow:0 0 0 1px rgba(129,180,255,.16),0 24px 80px rgba(33,85,160,.34)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 82% 8%,rgba(46,120,255,.12),transparent 32%),var(--bg);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.66;letter-spacing:0}body.theme-ready{transition:background .25s ease,color .25s ease}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(2.35rem,6.4vw,5.85rem);line-height:.98;letter-spacing:0;margin-bottom:20px}h2{font-size:clamp(1.55rem,3vw,2.7rem);line-height:1.12;letter-spacing:0;margin-bottom:12px}h3{font-size:1.04rem;line-height:1.32;margin-bottom:8px;letter-spacing:0}p{color:var(--soft)}:focus-visible{outline:3px solid var(--amber);outline-offset:3px}.wfold-header{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:70px;padding:13px clamp(16px,4vw,58px);background:color-mix(in srgb,var(--bg) 84%,transparent);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.wfold-brand{display:flex;align-items:center;gap:12px;min-width:0}.wfold-brand strong{white-space:nowrap}.wfold-mark{width:34px;height:34px;display:grid;grid-template-columns:repeat(3,1fr);gap:3px;transform:skewX(-8deg)}.wfold-mark i{display:block;border-radius:4px;background:linear-gradient(180deg,#fff,var(--blue));box-shadow:0 8px 20px rgba(46,120,255,.2)}.wfold-mark i:nth-child(2){transform:translateY(8px);background:linear-gradient(180deg,var(--cyan),#fff)}.wfold-nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:flex-end}.wfold-nav a{padding:8px 10px;border-radius:7px;border:1px solid transparent;color:var(--soft);font-weight:750;font-size:.94rem}.wfold-nav a:hover{color:var(--ink);background:var(--panel);border-color:var(--line)}.wfold-tools{display:flex;align-items:center;gap:8px}.theme-switch,.wfold-menu{width:42px;height:42px;border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--ink);display:inline-grid;place-items:center;box-shadow:0 8px 24px rgba(10,33,74,.08);cursor:pointer}.theme-switch svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.theme-switch .moon{display:none}html[data-theme=dark] .theme-switch .sun{display:none}html[data-theme=dark] .theme-switch .moon{display:block}.wfold-menu{display:none}.wfold-menu span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px}.wfold-menu{gap:4px}
.wfold-hero{position:relative;min-height:min(760px,calc(100svh - 70px));display:grid;grid-template-columns:minmax(0,.92fr) minmax(360px,1.08fr);align-items:center;gap:28px;padding:48px clamp(16px,5vw,78px) 30px;overflow:hidden;border-bottom:1px solid var(--line)}.wfold-hero-art{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}.wfold-hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,color-mix(in srgb,var(--bg) 95%,transparent) 0%,color-mix(in srgb,var(--bg) 78%,transparent) 46%,color-mix(in srgb,var(--bg) 38%,transparent) 100%);z-index:-1}.wfold-hero-copy{max-width:900px}.wfold-kicker{font-size:.76rem;letter-spacing:0;text-transform:uppercase;font-weight:900;color:var(--blue);margin-bottom:12px}.wfold-lead{font-size:clamp(1rem,1.6vw,1.22rem);max-width:780px}.wfold-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.wfold-button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 18px;border-radius:8px;background:var(--ink);color:var(--bg);border:1px solid var(--ink);font-weight:850}.wfold-button-soft{background:var(--panel);color:var(--ink);border-color:var(--line)}.wfold-hero-panel{align-self:end;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;max-width:560px;margin-left:auto}.wfold-hero-panel a{min-height:120px;background:color-mix(in srgb,var(--panel) 88%,transparent);border:1px solid var(--line);border-radius:8px;padding:16px;box-shadow:var(--glow);backdrop-filter:blur(12px)}.wfold-hero-panel span{display:block;font-weight:900;margin-bottom:6px}.wfold-hero-panel small{display:block;color:var(--soft);font-size:.9rem;line-height:1.45}
.wfold-section,.wfold-inner{max-width:1370px;margin:0 auto;padding:72px clamp(16px,5vw,78px)}.wfold-section-head{max-width:810px;margin-bottom:28px}.route-sheet-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.route-sheet-grid article,.device-lane-card,.issue-fold-grid article,.inkrail-manual article,.route-ledger article,.route-atlas-board article{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:18px;box-shadow:0 12px 34px rgba(15,50,96,.06)}.route-sheet-grid b{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:8px;background:var(--panel-soft);color:var(--blue);margin-bottom:14px}.route-sheet-grid h2{font-size:1.08rem}.wfold-band{background:linear-gradient(135deg,color-mix(in srgb,var(--panel-soft) 82%,transparent),var(--bg));border-block:1px solid var(--line);padding:76px clamp(16px,5vw,78px)}.wfold-band-inner{max-width:1370px;margin:0 auto;display:grid;grid-template-columns:330px minmax(0,1fr);gap:36px;align-items:start}.wfold-text-link{display:inline-flex;margin-top:8px;color:var(--blue);font-weight:900}.device-lane-board{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.device-lane-card span{display:inline-flex;padding:5px 8px;border-radius:7px;background:var(--panel-soft);color:var(--blue);font-size:.78rem;font-weight:900;margin-bottom:12px}.device-lane-card h2{font-size:1.08rem}.device-lane-card ol{margin:12px 0 0;padding-left:20px;color:var(--soft)}.device-lane-card small{color:var(--soft)}
.inkrail-articles{display:grid;grid-template-columns:repeat(7,minmax(224px,1fr));gap:12px;overflow-x:auto;padding-bottom:6px}.inkrail-card{background:var(--panel);border:1px solid var(--line);border-radius:8px;overflow:hidden;min-height:256px;display:flex;flex-direction:column}.inkrail-card:before{content:"";display:block;height:8px;background:linear-gradient(90deg,var(--blue),var(--cyan),var(--amber))}.inkrail-card div{padding:16px;display:flex;flex-direction:column;flex:1}.inkrail-card span{color:var(--blue);font-weight:900;font-size:.82rem}.inkrail-card time{font-size:.82rem;color:var(--soft);margin:5px 0 10px}.inkrail-card h3{font-size:1rem}.inkrail-card p{font-size:.92rem;margin-bottom:0}.wfold-help-preview{display:grid;grid-template-columns:360px minmax(0,1fr);gap:36px;align-items:start}.issue-fold-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.issue-fold-grid h2{font-size:1.05rem}.wfold-inner-hero{padding:24px 0 34px;border-bottom:1px solid var(--line);margin-bottom:30px}.wfold-inner-hero h1{font-size:clamp(2.1rem,5vw,4.4rem);max-width:1030px}.wfold-inner-hero p{max-width:850px;font-size:1.08rem}.wfold-copy-block{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:24px;margin:28px 0}.wfold-copy-block section+section{border-top:1px solid var(--line);padding-top:18px;margin-top:18px}.route-ledger{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.route-ledger h2,.route-ledger h3{font-size:1.05rem}.route-ledger small{display:block;color:var(--soft);margin:10px 0}.route-ledger strong{display:block;color:var(--ink);font-size:.92rem}.wfold-step-line{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:28px 0}.wfold-step-line article{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:20px}.wfold-step-line b{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:8px;background:var(--blue);color:#fff;margin-bottom:14px}.device-lane-page{margin:28px 0}.route-atlas-board{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}.route-atlas-board span{display:block;color:var(--blue);font-weight:900;margin-bottom:8px}.route-atlas-board h2{font-size:1rem}.inkrail-manual{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:28px 0}.inkrail-manual span{display:inline-flex;color:var(--blue);font-weight:900;margin-bottom:10px}.inkrail-manual h2{font-size:1.08rem}.wfold-faq{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:28px}.wfold-faq details{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:15px}.wfold-faq summary{cursor:pointer;font-weight:900}.wfold-faq p{margin:10px 0 0}.wfold-related{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:30px;padding:16px;border:1px solid var(--line);border-radius:8px;background:var(--panel)}.wfold-related h2{font-size:1rem;margin:0 8px 0 0}.wfold-related a{padding:8px 11px;border:1px solid var(--line);border-radius:8px;background:var(--panel-soft);font-weight:800}
.wfold-article{padding:52px clamp(16px,5vw,78px) 76px}.wfold-article-body{max-width:910px;margin:0 auto}.wfold-breadcrumb{display:flex;gap:9px;flex-wrap:wrap;color:var(--soft);font-size:.92rem;margin-bottom:22px}.wfold-article-body time{display:inline-block;color:var(--soft);margin-right:12px}.wfold-article-tag{display:inline-flex;padding:4px 9px;border-radius:7px;background:var(--panel-soft);color:var(--blue);font-weight:900;font-size:.82rem}.wfold-article-body h1{font-size:clamp(2.15rem,5.2vw,4.45rem);line-height:1.04;margin-top:14px}.wfold-article-lead{font-size:1.16rem;color:var(--ink)}.wfold-article-image{width:100%;border-radius:8px;border:1px solid var(--line);box-shadow:var(--shadow);margin:26px 0 8px}.wfold-article-body section{border-top:1px solid var(--line);padding-top:22px;margin-top:24px}.wfold-footer{background:#08162a;color:#fff;padding:44px clamp(16px,5vw,78px) 22px}.wfold-footer-grid{max-width:1370px;margin:0 auto;display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:24px}.wfold-footer h2{font-size:1rem;color:#fff}.wfold-footer p,.wfold-footer a{color:#c8d8e8}.wfold-footer a{display:block;margin:6px 0}.wfold-footer-note{max-width:1370px;margin:28px auto 0;color:#aebfd4;font-size:.9rem}
@media (max-width:1120px){.wfold-hero{grid-template-columns:1fr;min-height:auto}.wfold-hero-panel{margin-left:0;max-width:none}.route-sheet-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.wfold-band-inner,.wfold-help-preview{grid-template-columns:1fr}.device-lane-board,.route-ledger,.route-atlas-board,.wfold-footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.inkrail-articles{grid-template-columns:repeat(4,minmax(230px,1fr))}.issue-fold-grid,.inkrail-manual{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:760px){body{overflow-x:hidden}.wfold-header{padding:12px 16px}.wfold-brand strong{max-width:48vw;overflow:hidden;text-overflow:ellipsis}.wfold-menu{display:grid}.wfold-nav{position:absolute;top:64px;left:12px;right:12px;display:none;grid-template-columns:1fr;background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:8px;box-shadow:var(--shadow)}.wfold-nav.is-open{display:grid}.wfold-nav a{padding:12px}.wfold-hero{padding:220px 16px 18px}.wfold-hero-art{height:220px;bottom:auto;object-position:center center}.wfold-hero:after{background:linear-gradient(180deg,color-mix(in srgb,var(--bg) 8%,transparent) 0 170px,color-mix(in srgb,var(--bg) 70%,transparent) 220px,var(--bg) 285px)}.wfold-actions{display:grid}.wfold-button{width:100%}.wfold-hero-panel,.route-sheet-grid,.device-lane-board,.route-ledger,.route-atlas-board,.issue-fold-grid,.inkrail-manual,.wfold-faq,.wfold-footer-grid,.wfold-step-line{grid-template-columns:1fr}.wfold-section,.wfold-inner,.wfold-band,.wfold-article{padding-left:16px;padding-right:16px}.inkrail-articles{grid-template-columns:1fr;overflow:visible}.inkrail-card{min-height:0}.wfold-related{display:grid}.wfold-related h2{margin:0}.wfold-hero-panel a{min-height:auto}.route-sheet-grid article,.device-lane-card,.issue-fold-grid article,.inkrail-manual article,.route-ledger article,.route-atlas-board article{padding:16px}}