/* S0.2 isolated IA candidate; inherits S0.1 Studio semantic palette. */
:root{--vi-navy:#243750;--vi-amber:#E9A45C;--bg-canvas:#F6F3EC;--bg-surface:#fff;--bg-subtle:#EFECE4;--ink-primary:#18202C;--ink-secondary:#4A5568;--border-hairline:#E2DFD5;--font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Noto Sans CJK SC","Segoe UI",Roboto,sans-serif;--nav-height:56px}
*{box-sizing:border-box}html{scroll-behavior:auto;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}body{margin:0;font:16px/1.65 var(--font-sans);background:var(--bg-canvas);color:var(--ink-primary)}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:600}button,a,summary{-webkit-tap-highlight-color:transparent}a:hover{color:var(--vi-navy);text-decoration:underline;text-underline-offset:5px}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--vi-navy);outline-offset:5px;border-radius:3px}#main{scroll-margin-top:56px}.container{width:calc(100% - 80px);max-width:1120px;margin-inline:auto}.site-header{height:var(--nav-height);position:sticky;top:0;z-index:5;background:var(--bg-canvas);border-bottom:1px solid var(--border-hairline)}.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;gap:9px;min-height:44px;font-size:17px;font-weight:600;letter-spacing:-.02em;white-space:nowrap}.brand-dot{width:8px;height:8px;border-radius:50%;background:var(--vi-amber);flex:none}.desktop-nav{display:flex;gap:28px;align-items:center}.desktop-nav a{display:flex;align-items:center;min-height:44px;font-size:14px}.menu-toggle{display:none}.hero{padding:78px 0 76px;max-width:850px}.hero-intro{font-size:14px;color:var(--ink-secondary);margin-bottom:19px}.hero h1{font-size:40px;line-height:1.25;letter-spacing:-.035em;color:var(--vi-navy)}.hero-description{font-size:17px;line-height:1.8;color:var(--ink-secondary);margin-top:21px;max-width:650px}.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:26px;margin-top:28px}.button-primary{display:inline-flex;align-items:center;justify-content:center;gap:24px;min-height:46px;background:var(--vi-navy);color:#fff;padding:10px 18px;border-radius:8px;font-size:15px;font-weight:500}.button-primary:hover{background:#1B2A3E;color:#fff;text-decoration:none}.text-action{display:inline-flex;align-items:center;gap:12px;min-height:44px;font-size:14px;font-weight:500}.mobile-break{display:none}.section{border-top:1px solid var(--border-hairline);padding:40px 0 50px;display:grid;grid-template-columns:240px minmax(0,1fr);gap:40px;scroll-margin-top:84px}.section:focus{outline:none}.section-heading h2{font-size:22px;line-height:1.4;letter-spacing:-.02em;color:var(--vi-navy)}.section-heading p{font-size:14px;color:var(--ink-secondary);margin-top:10px;max-width:210px}.tools-body{display:grid;grid-template-columns:minmax(0,1.17fr) minmax(0,1fr);gap:32px;min-width:0}.featured-tool{background:var(--bg-surface);border:1px solid var(--border-hairline);border-radius:12px;padding:26px 28px 24px}.tool-heading{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:23px}.tool-monogram{display:inline-flex;align-items:center;justify-content:center;background:var(--vi-navy);color:#fff;width:38px;height:38px;border-radius:8px;font-weight:600;font-size:15px}.tool-status{font-size:12px;color:var(--ink-secondary)}.tools-body h3,.work-copy h3,.notes-body h3{font-size:19px;line-height:1.4;color:var(--vi-navy);overflow-wrap:anywhere}.tool-lead{font-size:23px;font-weight:500;line-height:1.5;letter-spacing:-.02em;margin-top:14px}.tool-description{font-size:14px;line-height:1.8;color:var(--ink-secondary);margin-top:14px}.tool-actions{margin-top:22px;display:flex;flex-direction:column;align-items:flex-start;gap:3px}.tool-main-link{font-size:14px;min-height:44px;display:inline-flex;align-items:center;gap:20px;font-weight:600}.english-link{font-size:13px;min-height:44px;display:inline-flex;align-items:center;gap:10px;color:var(--ink-secondary)}.guide-entry{padding:6px 0 0;display:flex;flex-direction:column;align-items:flex-start}.guide-entry h3{margin-top:13px}.guide-lead{font-size:21px;line-height:1.5;margin-top:18px}.guide-entry .text-action{margin-top:20px}.preview-note{font-size:12px;color:var(--ink-secondary);line-height:1.7;margin-top:10px}.work-body{min-width:0}.work-row{display:grid;grid-template-columns:56px minmax(0,1fr) auto;align-items:center;gap:18px;padding:22px 0;border-bottom:1px solid var(--border-hairline)}.work-row:first-child{padding-top:0}.work-row:last-child{border-bottom:0;padding-bottom:0}.work-row:hover{text-decoration:none}.work-row:hover .work-link{text-decoration:underline;text-underline-offset:5px}.work-row img{width:56px;height:56px;object-fit:contain;border-radius:12px;display:block}.work-copy p{font-size:14px;line-height:1.7;color:var(--ink-secondary);margin-top:5px}.work-status{display:block;font-size:12px;color:var(--ink-secondary);margin-top:6px}.work-link{font-size:13px;white-space:nowrap;min-height:44px;display:inline-flex;align-items:center;gap:14px}.diary-mark{width:56px;height:56px;display:flex;align-items:center;justify-content:center;border:1px solid var(--border-hairline);border-radius:12px;background:var(--bg-subtle);font-size:21px;color:var(--ink-secondary)}.work-building{grid-template-columns:56px minmax(0,1fr)}.inline-status{font-size:12px;font-weight:400;color:var(--ink-secondary);display:inline-block;vertical-align:middle;margin-left:8px}.notes-body h3{margin-top:9px}.note-description{font-size:14px;line-height:1.8;color:var(--ink-secondary);margin-top:9px}.draft-excerpt{margin-top:14px}.draft-excerpt summary{display:inline-flex;align-items:center;gap:16px;min-height:44px;font-size:14px;cursor:pointer;list-style:none}.draft-excerpt summary::-webkit-details-marker{display:none}.draft-excerpt[open] summary span{transform:rotate(45deg)}.excerpt-body{border-left:2px solid var(--border-hairline);padding:6px 0 0 20px;margin-top:8px;font-size:15px;line-height:1.9;max-width:640px}.excerpt-source{font-size:12px;color:var(--ink-secondary);margin-top:16px}.excerpt-body .text-action{margin-top:6px}.about{padding-bottom:45px}.about-body>p{font-size:16px;line-height:1.9}.about-body .text-action{margin-top:14px}.footer{border-top:1px solid var(--border-hairline);padding-block:20px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:12px;color:var(--ink-secondary)}.footer a{min-height:44px;display:flex;align-items:center;gap:10px}.skip-link{position:fixed;left:20px;top:-100px;z-index:30;background:#fff;padding:10px 16px}.skip-link:focus{top:8px}dialog{max-width:none;max-height:100dvh;border:0;margin:0 0 0 auto;padding:0;background:var(--bg-canvas);color:var(--ink-primary);height:100dvh;width:min(100%,390px)}dialog::backdrop{background:rgba(24,32,44,.28)}.mobile-menu-top{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;border-bottom:1px solid var(--border-hairline)}.menu-close{border:0;background:transparent;min-height:44px;min-width:66px;font-size:14px;display:flex;align-items:center;justify-content:space-between;gap:12px}dialog nav{padding:20px}dialog nav a{display:flex;align-items:center;justify-content:space-between;min-height:60px;font-size:20px;border-bottom:1px solid var(--border-hairline)}dialog>p{padding:8px 20px;font-size:13px;color:var(--ink-secondary)}body.menu-open{overflow-y:hidden}.lang-switch{display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:500;min-height:30px;padding:0 9px;border-radius:6px;border:1px solid var(--border-hairline);color:var(--ink-secondary);text-decoration:none;margin-left:4px;letter-spacing:.02em}.lang-switch:hover{color:var(--vi-navy);border-color:var(--vi-navy);text-decoration:none}.mobile-lang-link{color:var(--vi-navy);font-size:18px;font-weight:500}
@media(max-width:1000px){.section{grid-template-columns:190px minmax(0,1fr);gap:28px}.tools-body{gap:24px}.featured-tool{padding:24px}.work-row{grid-template-columns:48px minmax(0,1fr);gap:15px}.work-row img,.diary-mark{width:48px;height:48px}.work-link{grid-column:2;margin-top:-9px}.work-building{grid-template-columns:48px minmax(0,1fr)}}
@media(max-width:760px){.container{width:calc(100% - 40px)}.desktop-nav{display:none}.menu-toggle{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;background:transparent;border:0;min-height:44px;min-width:68px;padding:0 3px}.hero{padding:48px 0 43px}.hero-intro{font-size:13px;margin-bottom:16px}.hero h1{font-size:32px;line-height:1.35;letter-spacing:-.03em}.mobile-break{display:block}.desktop-break{display:none}.hero-description{font-size:15px;line-height:1.85;margin-top:18px}.hero-actions{gap:20px;margin-top:23px}.button-primary{font-size:14px;gap:16px}.section{display:block;padding:29px 0 33px;scroll-margin-top:76px}.section-heading{margin-bottom:23px}.section-heading h2{font-size:22px}.section-heading p{max-width:none;margin-top:7px;font-size:13px}.tools-body{display:block}.featured-tool{padding:23px;border-radius:12px}.tool-heading{margin-bottom:19px}.tool-lead{font-size:24px}.tool-description{font-size:14px}.guide-entry{padding:26px 0 0}.guide-entry h3{margin-top:9px}.guide-lead br{display:none}.guide-lead{font-size:19px;margin-top:10px}.guide-entry .tool-description{margin-top:9px}.guide-entry .text-action{margin-top:11px}.preview-note{margin-top:5px}.work-copy h3{font-size:17px}.work-copy p{font-size:13px}.work-row{padding:20px 0}.work-link{font-size:13px;justify-self:start}.notes-body h3{font-size:19px}.about-body>p{font-size:15px}.footer{padding-block:13px}.about .section-heading{margin-bottom:18px}}
@media(max-width:350px){.hero h1{font-size:29px}.hero{padding-top:37px}.hero-actions{gap:13px}.button-primary{padding-inline:14px}.text-action{font-size:13px}.featured-tool{padding:20px}.tool-lead{font-size:22px}.inline-status{margin-left:3px}.work-row{gap:12px}.footer{gap:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}