:root{color:#173447;background:#f7faf8}body{background:#f7faf8}.topbar{background:#11283c;border-bottom:3px solid #f47a5d;height:78px}.brand{letter-spacing:-.055em;font-size:1.62rem;font-weight:840}.brand-word{white-space:nowrap}.brand-word span{color:#82e5d5}.brand-word b{color:#f47a5d;font-weight:900}.header-label{margin-left:auto;margin-right:35px;border:1px solid #536f7b;border-radius:30px;color:#acc9c8;padding:7px 11px;font-size:.7rem;font-weight:800;letter-spacing:.12em}.toplinks a{color:#d7e6e7}.toplinks a:hover,.toplinks a.active{color:#82e5d5}
.layout{grid-template-columns:248px minmax(0,1fr)}.rail{background:#e9f0ed;color:#173447;border-right:1px solid #cdded8;padding:27px 12px 30px}.rail-intro{border:1px solid #bfdcd2;border-radius:4px;background:#dcf1eb;padding:20px;margin:0 7px 6px}.rail .eyebrow{color:#0b7777}.rail-intro strong{font-family:Georgia,"Times New Roman",serif;font-size:1.55rem;line-height:1.1;letter-spacing:-.035em;margin:10px 0}.rail-intro p{color:#4d6d70;font-size:.86rem;margin:0}.rail-heading{color:#678486;border-top:1px solid #d1e0dc;padding-top:16px}.rail-group a{color:#355660;font-weight:650;padding:10px 12px;border-radius:4px}.rail-group a small{color:#7b9698}.rail-group a:hover,.rail-group a.active{background:#d0e9e3;color:#123b45}.rail-group a.active{box-shadow:inset 3px 0 #f47a5d}.rail-bottom a{color:#116d6e}.workspace{background:#f7faf8}.toolbar{background:#f7faf8;border-bottom-color:#cdded8}.search{border-radius:5px;border-color:#c2d4cf}.search:focus-within{border-color:#078477;box-shadow:0 0 0 3px #c5eee7}.level-tabs{border-radius:5px;background:#e7efec;border-color:#d0e0db}.level-tabs button{border-radius:3px}.level-tabs button.active{color:#0b5a58}.eyebrow{color:#087876}.view{padding-top:25px}
.hero{background:#dff3ed;color:#153547;border:1px solid #a9dcd0;border-left:7px solid #f47a5d;border-radius:3px;min-height:330px;padding:clamp(25px,3.5vw,46px);grid-template-columns:minmax(0,1fr) 224px}.hero:before{border-color:#b7e5dc;right:13%}.hero:after{border-color:#b7e5dc}.hero .eyebrow{color:#0a8079}.hero h1{font-family:Georgia,"Times New Roman",serif;font-weight:700;letter-spacing:-.055em;font-size:clamp(2.5rem,4.4vw,4.15rem);line-height:1.04;margin:15px 0}.hero h1 em{color:#e26046;font-weight:500}.hero p{color:#3d6268;line-height:1.58;max-width:620px}.hero-figure{background:#103f4b;border:0;border-radius:3px;min-height:225px;padding:24px;box-shadow:10px 10px 0 #b8e3d9}.figure-label{color:#7fe5d4}.hero-figure strong{font-family:Georgia,"Times New Roman",serif;font-weight:500;font-size:2.9rem}.hero-figure strong small{font-family:Inter,ui-sans-serif,system-ui,sans-serif}.figure-rule{background:#527a80}.hero-figure>span{color:#a7d1d0}.primary{background:#f47a5d;color:#11283c;border-radius:3px;padding:13px 18px}.primary:hover{background:#f7a08b}.subtle{color:#0d6666;font-weight:700}
.section-heading{margin-top:35px}.section-heading h2,.page-heading h1,.topic-title h1{font-family:Georgia,"Times New Roman",serif;font-weight:700;letter-spacing:-.045em}.section-heading h2{font-size:2rem}.unit-grid{gap:12px}.unit-card{border-radius:3px;border-color:#d3e0dc;border-top:4px solid #50b8a9;min-height:210px;box-shadow:0 2px 0 #e0eae5}.unit-card:nth-child(4n+2){border-top-color:#f47a5d}.unit-card:nth-child(4n+3){border-top-color:#5269a9}.unit-card:nth-child(4n+4){border-top-color:#d8ad42}.unit-card:hover,.topic-card:hover{border-color:#78bdb3;box-shadow:5px 7px 0 #d0e9e1;transform:translate(-2px,-2px)}.unit-no{font-family:Georgia,"Times New Roman",serif;color:#0b817c;font-size:1.55rem}.unit-card h3{font-family:Georgia,"Times New Roman",serif;font-size:1.3rem;font-weight:700;margin-top:16px}.unit-card p,.topic-card p{color:#526d75;line-height:1.55}.unit-open,.card-link{color:#096e6d;text-decoration:underline;text-decoration-color:#9ed7ca;text-underline-offset:4px}
.page-heading h1{font-size:clamp(2.5rem,4.5vw,4.4rem)}.page-heading p{color:#4e6971}.unit-title{border-color:#cfdeda}.topic-card{border-radius:3px;border-color:#d3e0dc;min-height:238px;box-shadow:0 2px 0 #e0eae5}.topic-index{color:#ec6f53;font-family:Georgia,"Times New Roman",serif;font-size:1.25rem}.topic-card h3{font-family:Georgia,"Times New Roman",serif;font-size:1.4rem;font-weight:700}.tag{border-radius:2px;background:#d9f1e9;color:#08736d}.tag-advanced{background:#e4e8fb;color:#3d5491}
.topic-page{max-width:1220px}.topic-title{display:flex;align-items:end;justify-content:space-between;gap:24px;border-bottom:0;background:#dff3ed;border-left:6px solid #f47a5d;padding:clamp(25px,3.8vw,43px);position:relative;overflow:hidden}.topic-title>div:first-child{position:relative;z-index:1}.topic-title h1{font-size:clamp(2.45rem,4.3vw,4.3rem);margin-bottom:20px}.topic-stamp{font-family:Georgia,"Times New Roman",serif;font-size:clamp(3rem,8vw,7rem);line-height:1;color:#a1d9cb;letter-spacing:-.1em;white-space:nowrap;transform:translateY(13px);user-select:none}.topic-tags{color:#4d7274}.topic-lead{font-family:Georgia,"Times New Roman",serif;font-size:clamp(1.18rem,2vw,1.48rem);line-height:1.55;color:#294b56;max-width:850px;margin:26px 0 28px;padding-left:22px;border-left:3px solid #ec866c}.topic-layout{grid-template-columns:minmax(0,1fr) 254px;gap:25px;margin-top:0}.topic-main{gap:13px}.note-rich{border-radius:3px;border-color:#d1e0db;border-left:4px solid #3db5a3;padding:27px 33px}.note-rich:nth-child(2){border-left-color:#6279ac}.note-rich:nth-child(3){border-left-color:#d8ad42}.note-title h2,.deep-note h2,.case-note h2,.pitfall-note h2{font-family:Georgia,"Times New Roman",serif;font-size:1.55rem;font-weight:700}.note-rich p{font-size:1.06rem;line-height:1.76;color:#304b56;margin:15px 0 1px}.note-num{font-family:Georgia,"Times New Roman",serif;font-size:1.1rem;color:#e7664b}.deep-note,.case-note,.pitfall-note{border-radius:3px;padding:30px 33px}.deep-note{background:#eef2fb;border:1px solid #c8d3ec;border-left:4px solid #6279ac}.deep-note .eyebrow{color:#4d6399}.deep-note h2,.case-note h2,.pitfall-note h2{margin:12px 0}.deep-note p,.case-note p,.pitfall-note p{font-size:1.06rem;line-height:1.72;margin:0}.deep-note p{color:#344764}.case-note{background:#123f4c;color:white;border-left:4px solid #f47a5d}.case-note .eyebrow{color:#84e0cf}.case-note p{color:#d9eeee}.pitfall-note{background:#fff0e8;border:1px solid #f4c6b5;border-left:4px solid #eb795e}.pitfall-note .eyebrow{color:#ad543f}.pitfall-note p{color:#554b46}.recall{border-radius:3px;background:#dcf4ec;border-color:#a7dacb;border-left:4px solid #31b79d;padding:30px 33px}.recall .question{font-family:Georgia,"Times New Roman",serif;font-weight:700;color:#214952}.recall button{border-radius:3px;background:#123f4c}.answer{border-color:#9ccdc2}.topic-aside{gap:12px}.aside-block{border-radius:3px;border-color:#d3e0dc}.aside-block h3{font-family:Georgia,"Times New Roman",serif;font-size:1.2rem}.contents{background:#f0f5f2}.contents button{display:flex;align-items:center;gap:12px;width:100%;padding:11px 0;border:0;border-bottom:1px solid #d4e3df;background:transparent;text-align:left;font-size:.88rem;font-weight:680;color:#31545c}.contents button:hover{color:#06766e}.contents button:first-of-type{margin-top:10px}.contents button:last-child{border-bottom:0;padding-bottom:0}.contents button span{color:#e36a4e;font-family:Georgia,"Times New Roman",serif;font-size:1rem}.source-mini{background:#e6efed}.source-mini .eyebrow{display:block;margin-bottom:12px}.source-mini a{color:#08716e}.back-link{color:#08716e}.sources-grid{gap:12px}.source-panel{border-radius:3px;border-color:#d3e0dc;border-top:4px solid #57bcae}.source-panel:nth-child(even){border-top-color:#f47a5d}.source-panel h2{font-family:Georgia,"Times New Roman",serif;font-size:1.65rem}footer{border-color:#cbded7;color:#667e81}footer a{color:#08716e}
@media(max-width:1120px){.layout{grid-template-columns:220px minmax(0,1fr)}.hero{grid-template-columns:minmax(0,1fr) 190px}.topic-layout{grid-template-columns:minmax(0,1fr) 220px}}
@media(max-width:800px){.topbar{height:68px}.layout{display:block}.rail{border-bottom:1px solid #c8dcd5}.rail-nav{background:#e5f0ec}.rail-group a{color:#31565d}.hero{grid-template-columns:1fr}.hero-figure{box-shadow:none;min-height:0}.topic-layout{grid-template-columns:1fr}.topic-aside{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.contents{grid-column:1/-1}.contents button{display:inline-flex;width:auto;margin-right:18px;border:0}.source-mini{grid-column:1/-1}}
@media(max-width:590px){.brand{font-size:1.26rem}.header-label{display:none}.toplinks a:first-child{display:none}.hero h1{font-size:2.65rem}.hero-figure strong{font-size:2rem}.topic-title{padding:27px 23px}.topic-title h1{font-size:2.6rem}.topic-stamp{display:none}.topic-lead{padding-left:14px}.note-rich,.deep-note,.case-note,.pitfall-note,.recall{padding:24px 22px}.topic-aside{display:flex}.contents button{display:flex;width:100%;border-bottom:1px solid #d4e3df;margin:0}.page-heading h1{font-size:2.65rem}}
.topic-main section[id]{scroll-margin-top:105px}.mobile-toc{display:none}
@media(max-width:800px){.mobile-toc{display:block;margin:0 0 20px;background:#f0f5f2;border:1px solid #cbded8;padding:13px 16px}.mobile-toc summary{font-weight:800;color:#1c5d62;cursor:pointer}.mobile-toc>div{display:flex;flex-wrap:wrap;gap:8px;margin-top:13px}.mobile-toc button{border:1px solid #b7d8d1;background:#fff;color:#1a5f62;padding:8px 10px;border-radius:3px;font-size:.86rem;font-weight:700}.topic-aside .contents{display:none}.topic-main section[id]{scroll-margin-top:18px}}
.hero h1{max-width:780px;font-size:clamp(2.2rem,3.7vw,3.75rem);line-height:1.08}
@media(max-width:590px){.hero h1{font-size:2.3rem;line-height:1.1}}
.static-toolbar{font-size:.9rem;font-weight:700;color:#45656a}.static-toolbar a{color:#08716e;text-underline-offset:4px}.static-toolbar span{color:#70868a;font-weight:600}.contents a{display:flex;align-items:center;gap:12px;text-decoration:none;border-bottom:1px solid #d4e3df;padding:11px 0;color:#31545c;font-size:.88rem;font-weight:680}.contents a:hover{color:#06766e}.contents a:first-of-type{margin-top:10px}.contents a:last-child{border-bottom:0;padding-bottom:0}.contents a span{color:#e36a4e;font-family:Georgia,"Times New Roman",serif;font-size:1rem}.static-answer summary{display:inline-flex;gap:24px;align-items:center;background:#123f4c;color:#fff;border-radius:3px;padding:11px 15px;font-size:.86rem;font-weight:740;cursor:pointer;list-style:none}.static-answer summary::-webkit-details-marker{display:none}.static-answer summary:hover{background:#205766}.static-answer[open] summary span{transform:rotate(45deg)}.mobile-toc a{border:1px solid #b7d8d1;background:#fff;color:#1a5f62;padding:8px 10px;border-radius:3px;font-size:.86rem;font-weight:700;text-decoration:none}.index-section{border-top:1px solid #d0e0db;padding-bottom:10px}.index-section h2 a{text-decoration:none}.index-section h2 a:hover{text-decoration:underline}.index-section ul{list-style:none;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 28px}.index-section li{display:flex;align-items:center;gap:8px;border-bottom:1px solid #d8e4df;padding:9px 0;line-height:1.45}.index-section li a{color:#174d55;text-decoration:none}.index-section li a:hover{text-decoration:underline}.initial{padding:35px max(20px,5vw)}.initial h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(2.2rem,4vw,3.8rem);max-width:800px}.initial-subjects{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:25px 0}.initial-subjects .unit-card{min-height:180px}.initial-subjects .unit-card p{font-size:.85rem}.initial-subjects .unit-card h3{font-size:1.1rem}.initial-subjects .unit-count{display:none}
@media(max-width:800px){.static-toolbar span{display:none}.index-section ul{grid-template-columns:1fr}.initial-subjects{grid-template-columns:repeat(2,minmax(0,1fr))}.mobile-toc a{display:inline-flex}}
@media(max-width:590px){.initial-subjects{grid-template-columns:1fr}.initial-subjects .unit-card{min-height:130px}}