:root{color-scheme:light;--paper:#f8f4ec;--white:#fffdfa;--ink:#2b281f;--muted:#625c53;--dark:#392a1d;--coffee:#79502d;--light:#f1e7d9;--line:#e4dacb;--site-gutter:clamp(20px,4.5vw,32px)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,Hiragino Kaku Gothic ProN,Yu Gothic,sans-serif;line-height:1.8;overflow-wrap:break-word}a{color:var(--coffee);text-underline-offset:.18em}button,input{font:inherit}button{max-width:100%}:where(a,button,input,summary):focus-visible{outline:3px solid #a46c3d;outline-offset:3px}.container{width:100%;max-width:1100px;padding-inline:var(--site-gutter);margin-inline:auto}.header{position:-webkit-sticky;position:sticky;top:0;z-index:10;background:rgba(255,253,250,.97);border-bottom:1px solid var(--line)}.nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}.logo{color:var(--dark);text-decoration:none;font-size:1.25rem;font-weight:900;white-space:nowrap}.logo span{font-weight:500;font-size:.85rem;color:var(--coffee)}.nav nav{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:4px;min-width:0}.nav nav a{flex:0 0 auto;color:var(--ink);text-decoration:none;font-size:.86rem;line-height:1.45;border-radius:8px;padding:10px 9px;white-space:nowrap}.nav nav a:focus-visible,.nav nav a:hover{background:var(--light)}.page{padding-block:clamp(36px,5vw,56px) 78px;min-height:65vh}.page>h1{max-width:28ch;margin:12px 0 18px;font-size:clamp(1.78rem,4vw,2.8rem);line-height:1.45;letter-spacing:-.018em;overflow-wrap:anywhere}.page>.muted{max-width:74ch;margin:0 0 24px}.page>.eyebrow{margin-block:2px 12px}.eyebrow{color:var(--coffee);letter-spacing:.13em;font-weight:800;font-size:.74rem;line-height:1.6}.hero{background:linear-gradient(115deg,#2d2118 4%,#6b462a);color:#fff;padding-block:82px 90px}.hero .eyebrow{color:#f0c9a4}.hero h1{max-width:800px;margin:20px 0;font-size:clamp(2.05rem,5.5vw,4rem);line-height:1.38;letter-spacing:-.035em}.hero p{max-width:650px;color:#f0e6d8}.btn,button:not(.plain){display:inline-flex;align-items:center;justify-content:center;max-width:100%;min-height:44px;padding:11px 19px;background:var(--coffee);color:#fff;border:1px solid var(--coffee);border-radius:10px;font-weight:750;line-height:1.5;text-align:center;text-decoration:none;cursor:pointer}.btn:hover,button:hover:not(:disabled){filter:brightness(1.1)}button:disabled{opacity:.55;cursor:not-allowed}.secondary{background:#fff!important;color:var(--coffee)!important;border-color:#c8b8a5!important}.hero .btn{background:#fff;color:var(--dark);border-color:#fff}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-block:24px}.section{padding-block:55px}.section h2{font-size:clamp(1.45rem,3vw,1.8rem);line-height:1.5}.hint,.muted{color:var(--muted)}.hint{font-size:.86rem}.grid,.productgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:18px;gap:18px;margin-block:26px}.productgrid{grid-template-columns:repeat(2,minmax(0,1fr))}.panel,.product,.tile{min-width:0;background:var(--white);border:1px solid var(--line);border-radius:16px;padding:26px;box-shadow:0 8px 25px rgba(70,40,15,.035)}.product h2,.tile h2,.tile h3{margin:8px 0 12px;line-height:1.5}.product h2,.tile h2{font-size:1.25rem}.tile h3{font-size:1.15rem}.product p,.tile p{color:var(--muted)}.tile>a{display:inline-block;margin-top:5px;padding-block:5px;font-weight:700}.panel>h2:first-child{margin-top:0;font-size:1.35rem}.productprice{font-size:1.2rem;font-weight:900;margin-block:22px;color:var(--dark)}.tag{color:var(--coffee);font-size:.76rem;font-weight:800;letter-spacing:.075em;line-height:1.6}.product .btn,.product button{width:100%}.authpanel{max-width:640px}.authpanel label{display:block;font-weight:700;margin:15px 0}.authpanel input{display:block;width:100%;min-height:46px;margin-top:8px;padding:11px 13px;border:1px solid #c9bba9;background:#fff;border-radius:10px;font-size:1rem}.authpanel button{margin:5px 10px 5px 0}.status{background:#fff0db;color:#674b25;border-radius:9px;padding:11px 15px;margin-block:20px}.viewer{width:100%;height:calc(100dvh - 90px);min-height:650px;border:1px solid var(--line);border-radius:10px;background:white}.footer{padding-block:38px;background:#30231a;color:#ddcebd;font-size:.85rem}.footer span{margin-left:15px}.footer p{color:#b8a893;font-size:.79rem}.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;color:var(--muted);font-size:.85rem;line-height:1.5;margin-bottom:25px}.breadcrumbs a{font-weight:700}.lessonQuestions{display:grid;grid-gap:18px;gap:18px;margin-block:28px 35px;max-width:820px}.lessonQ{min-width:0;border:1px solid var(--line);background:var(--white);border-radius:16px;padding:24px 28px;box-shadow:0 6px 20px rgba(70,40,15,.025)}.lessonQ h2{margin:10px 0 20px;font-size:clamp(1.05rem,2.1vw,1.22rem);font-weight:750;line-height:1.85;letter-spacing:.005em;white-space:pre-wrap;overflow-wrap:anywhere}.lessonAnswer{background:var(--light);border-radius:10px;padding:5px 14px}.lessonAnswer summary{min-height:46px;padding-block:10px;color:var(--coffee);font-weight:750;cursor:pointer;line-height:1.55}.lessonAnswer>div{padding:1px 3px 12px}.lessonAnswer>div p:first-child{margin-top:6px}.preserveLines{white-space:pre-wrap;overflow-wrap:anywhere}@media (max-width:900px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:720px){:root{--site-gutter:20px}.nav{min-height:0;align-items:stretch;flex-direction:column;gap:4px;padding-top:12px}.logo{align-self:flex-start;font-size:1.16rem;line-height:1.4}.nav nav{flex-wrap:nowrap;justify-content:flex-start;gap:3px;overflow-x:auto;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch;margin-inline:calc(-1 * var(--site-gutter));padding:2px var(--site-gutter) 9px;scrollbar-width:thin}.nav nav a{padding:8px 9px;font-size:.81rem}.page{padding-block:32px 68px}.page>h1{max-width:none;font-size:clamp(1.65rem,6.3vw,2rem);margin:10px 0 15px}.page>.muted{font-size:.94rem;line-height:1.9;margin-bottom:23px}.hero{padding-block:54px 60px}.hero h1{font-size:clamp(2rem,8vw,2.7rem)}.grid,.productgrid{grid-template-columns:minmax(0,1fr);gap:15px}.section{padding-block:37px}.section h2{font-size:1.45rem}.panel,.product,.tile{padding:20px;border-radius:15px}.lessonQuestions{gap:16px;margin-block:23px 30px}.lessonQ{padding:19px 18px;border-radius:14px}.lessonQ h2{font-size:1.06rem;line-height:1.85;margin:10px 0 17px}.lessonAnswer{padding-inline:12px}.viewer{height:calc(100dvh - 150px);min-height:530px}.footer{padding-block:30px}.footer span{display:block;margin-left:0}}@media (max-width:380px){:root{--site-gutter:18px}.nav nav a{padding-inline:8px}.actions{gap:10px}.actions .btn{width:100%}.lessonQ{padding-inline:16px}.panel,.product,.tile{padding:18px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}.articleIndex>h1{max-width:30ch}.articleCategoryNav{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 32px}.articleCategoryNav a{display:inline-flex;align-items:center;min-height:40px;padding:5px 15px;border:1px solid var(--line);border-radius:999px;background:var(--white);text-decoration:none;font-weight:700;font-size:.88rem}.articleCategory{margin:34px 0 44px;scroll-margin-top:125px}.articleCategoryHeading{display:flex;justify-content:space-between;gap:15px;align-items:baseline;border-bottom:1px solid var(--line);padding-bottom:10px}.articleCategoryHeading h2{margin:0;font-size:1.45rem}.articleCategoryHeading span{color:var(--muted);white-space:nowrap;font-size:.88rem}.articleGrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:18px;gap:18px;margin:22px 0}.articleCard{display:flex;flex-direction:column;gap:6px}.articleCard h3{font-size:1.19rem;line-height:1.55;margin:6px 0 8px}.articleCard h3 a{text-decoration:none;color:var(--dark)}.articleCard h3 a:hover{text-decoration:underline}.articleCard p{margin:0}.articleCardFooter{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-top:auto;padding-top:16px;font-size:.86rem}.articleCardFooter span{color:var(--muted)}.articleCardFooter a{white-space:nowrap;font-weight:700}.articleCta{max-width:820px}.articleHero{max-width:860px;margin:0 0 35px}.articleHero h1{font-size:clamp(1.85rem,3.7vw,2.65rem);line-height:1.48;letter-spacing:-.025em;margin:14px 0 18px}.articleMeta{display:flex;flex-wrap:wrap;gap:10px 18px;font-size:.83rem;color:var(--muted)}.articleLead{font-size:1.05rem;line-height:2;margin:26px 0 0}.articleLayout{display:grid;grid-template-columns:minmax(0,1fr) 240px;grid-gap:38px;gap:38px;align-items:start}.articleBody{min-width:0;max-width:750px}.articleToc{background:#f1e7d9;border-radius:14px;padding:22px 24px;margin-bottom:35px}.articleToc strong{color:var(--dark)}.articleToc ol{padding-left:23px;margin:10px 0 0}.articleToc li{padding:3px 0}.articleToc a{text-decoration:none}.articleSection{padding-bottom:19px;margin-bottom:28px;scroll-margin-top:125px;border-bottom:1px solid var(--line)}.articleSection h2{font-size:clamp(1.34rem,2.7vw,1.62rem);line-height:1.55;margin:0 0 22px}.articleSection p{margin:0 0 20px;line-height:2.08}.articleSection ul{margin:0 0 20px;padding-left:1.4em}.articleSection li{margin:11px 0;line-height:1.8}.articleDisclaimer{padding:17px 19px;background:#f2ede4;border-radius:10px;font-size:.9rem;color:var(--muted);margin-bottom:35px}.articlePractice{background:var(--white);border:1px solid var(--line);border-radius:16px;padding:24px}.articlePractice h2{font-size:1.33rem;margin:7px 0}.articleLinkList{display:grid;grid-gap:7px;gap:7px;margin:14px 0}.articleLinkList a{display:flex;justify-content:space-between;align-items:center;gap:10px;border-bottom:1px solid var(--line);padding:10px 0;text-decoration:none;font-weight:700}.articleSidebar{position:-webkit-sticky;position:sticky;top:115px;background:var(--white);border:1px solid var(--line);border-radius:14px;padding:18px}.articleSidebar h2{font-size:1.07rem;margin:0 0 15px}.articleRelatedCard{display:grid;grid-gap:5px;gap:5px;padding:14px 0;border-top:1px solid var(--line);text-decoration:none}.articleRelatedCard strong{color:var(--dark);font-size:.94rem;line-height:1.6}.articleBackLink{display:inline-block;margin-top:13px;font-size:.87rem;font-weight:700}@media(max-width:900px){.articleLayout{grid-template-columns:minmax(0,1fr);gap:24px}.articleSidebar{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:8px 16px;gap:8px 16px}.articleBackLink,.articleSidebar h2{grid-column:1/-1}}@media(max-width:720px){.articleGrid{grid-template-columns:minmax(0,1fr);gap:15px}.articleHero{margin-bottom:25px}.articleHero h1{font-size:1.72rem}.articleLead{font-size:.99rem;line-height:1.98}.articleCategory{margin:26px 0 32px}.articleCategoryHeading h2{font-size:1.31rem}.articleToc{padding:18px 19px}.articleSection{scroll-margin-top:140px}.articleSection h2{font-size:1.3rem}.articleSection p{line-height:2}.articlePractice{padding:19px}.articleSidebar{grid-template-columns:minmax(0,1fr)}.articleCategoryNav{gap:8px;margin:20px 0 25px}}.noteStudyPanel{max-width:820px;margin-bottom:22px}.articleNoteReading h2,.noteStudyPanel h2{margin:8px 0 10px;font-size:1.25rem;line-height:1.55}.articleNoteReading p,.noteStudyPanel p{margin:0;color:var(--muted)}.noteStudyPanel .articleLinkList{margin:14px 0 5px}.noteCoverage{display:inline;color:var(--muted);font-size:.78rem;font-weight:500}.articleNoteReading{padding:23px 25px;background:var(--white);border:1px solid var(--line);border-radius:16px;margin:20px 0 32px}.articleNoteReading .articleLinkList{margin-bottom:0}.articleLearnSpotlight{margin-block:42px}.articleLearnSpotlight h2{margin:8px 0 9px;font-size:clamp(1.4rem,3vw,1.8rem);line-height:1.5}.articleLearnSpotlight .articleGrid{margin:20px 0}@media(max-width:720px){.noteStudyPanel{padding:19px}.articleNoteReading{padding:20px}.articleLearnSpotlight{margin-block:33px}.articleNoteReading .articleLinkList a,.noteStudyPanel .articleLinkList a{align-items:flex-start}}.hero .heroTitle{max-width:none;margin-block:18px 22px;font-size:clamp(28px,3.75vw,52px);letter-spacing:-.035em;line-height:1.34;white-space:nowrap;overflow-wrap:normal}.homeGuide>h2{margin:8px 0 12px}.homeGuideLead{max-width:750px;margin:0 0 24px;color:var(--muted)}.homeSteps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:18px;gap:18px;margin-block:24px}.homeStep{display:flex;flex-direction:column;min-width:0}.homeStep h3{margin:11px 0 8px;font-size:clamp(1.23rem,2.4vw,1.58rem);line-height:1.5}.homeStep p{color:var(--muted);margin:0 0 18px}.homeStep>a,.homeStepLinks{margin-top:auto}.homeStep>a,.homeStepLinks a{font-weight:750}.homeStepPrimary{grid-column:1/-1;display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.88fr);align-items:center;grid-gap:24px;gap:24px;background:#fffaf2;border-color:#d9c7ae}.homeStepPrimary .btn{margin-top:8px;width:-moz-fit-content;width:fit-content}.homeAppVisual{width:100%;margin:0}.homeAppVisual img{display:block;width:100%;max-width:470px;height:auto;margin:0 auto;border-radius:18px;border:1px solid #e5d7c4;box-shadow:0 15px 26px rgba(55,35,18,.08)}.homeAppVisual figcaption{text-align:center;font-size:.75rem;color:var(--muted);margin-top:8px}.homeStepLinks{display:flex;flex-wrap:wrap;gap:11px 17px}@media (max-width:720px){.hero .heroTitle{font-size:clamp(16px,5.7vw,32px);letter-spacing:-.045em;line-height:1.35;margin-block:17px 22px}.hero{padding-block:46px 54px}.homeSteps{gap:15px}.homeStepPrimary,.homeSteps{grid-template-columns:minmax(0,1fr)}.homeStepPrimary{gap:17px}.homeStep h3{font-size:1.3rem}.homeAppVisual img{max-width:410px}}@media (max-width:380px){.hero .heroTitle{font-size:max(16px,5.6vw)}.homeStepPrimary .btn{width:100%}}.mapStudyPage{max-width:1240px}.mapStudyPage>h1{max-width:none}.mapInfoRow{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 32px}.mapInfoRow span{display:inline-flex;align-items:center;padding:5px 12px;border:1px solid var(--line);background:var(--white);border-radius:999px;color:var(--coffee);font-size:.83rem;font-weight:750}.mapEmbedSection{margin:30px 0 42px;border-radius:19px;overflow:hidden;border:1px solid var(--line);background:var(--white)}.mapEmbedHeading{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px 24px}.mapEmbedHeading h2{font-size:1.4rem;margin:0 0 5px;line-height:1.5}.mapEmbedHeading p{margin:0;color:var(--muted);font-size:.88rem}.mapEmbedHeading .btn{white-space:nowrap;flex:0 0 auto}.mapFrame{display:block;width:100%;height:min(860px,calc(100dvh - 136px));min-height:620px;border:0;background:#f7f2e8}.mapExplain{margin:44px 0}.mapExplain h2{font-size:clamp(1.4rem,3vw,1.7rem);line-height:1.5}.mapExplain .grid{margin:18px 0}.mapFootnote{max-width:990px}.mapFootnote h2{font-size:1.28rem;margin:0 0 12px}.mapFootnote p{margin:12px 0}.mapHomeNote{margin-top:24px;border-left:3px solid var(--coffee);padding:10px 14px;background:#f3e8d8}@media (max-width:720px){.mapEmbedHeading{padding:16px 18px;flex-direction:column;align-items:flex-start;gap:12px}.mapEmbedHeading h2{font-size:1.28rem}.mapEmbedHeading .btn{width:100%}.mapFrame{height:calc(100dvh - 175px);min-height:580px}.mapStudyPage{padding-bottom:56px}.mapInfoRow{margin:17px 0 23px}.mapInfoRow span{font-size:.78rem}.mapEmbedSection{margin:20px 0 32px}}