@import url('https://fonts.googleapis.com/css2?family=Inter:wght@700;800;900&family=Noto+Sans+JP:wght@400;500;600;700;800;900&display=swap');

:root{--orange:#ff5a1f;--orange-dark:#dc3f08;--orange-soft:#fff1eb;--navy:#0b2340;--navy-2:#173b63;--ink:#172536;--sub:#5c6b7c;--line:#dde4ec;--line-strong:#c9d3df;--soft:#f6f8fb;--success:#138a54;--shadow:0 20px 54px rgba(11,35,64,.08)}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{min-height:100vh;background:#fff;color:var(--ink);font-family:"Noto Sans JP",system-ui,-apple-system,sans-serif;font-size:17px;line-height:1.9;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
::selection{background:#ffd8c9;color:var(--navy)}
a{color:inherit;text-decoration:none}
.wrap{width:min(100% - 40px,900px);margin:0 auto;padding:28px 0 64px}
.mark{background:linear-gradient(transparent 64%,#ffd3c3 0)}

/* service header */
.site-bar{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.94);border-bottom:1px solid rgba(11,35,64,.09);backdrop-filter:blur(14px)}
.site-bar-in{width:min(100% - 32px,1120px);min-height:70px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:20px}
.site-logo{display:inline-flex;align-items:center;min-height:44px;color:var(--navy);font-family:Inter,"Noto Sans JP",sans-serif;font-size:19px;font-weight:900;letter-spacing:-.03em}
.site-logo::before{content:"G";display:grid;place-items:center;width:30px;height:30px;margin-right:10px;border-radius:9px;background:var(--orange);color:#fff;font-size:17px;box-shadow:0 8px 18px rgba(255,90,31,.24)}
.site-logo span{color:var(--orange)}
.site-nav{display:flex;align-items:center;gap:8px;color:var(--navy);font-size:15px;font-weight:700}
.site-nav a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 13px;border-radius:12px}
.site-nav a:hover{background:var(--soft);color:var(--orange-dark)}
.site-nav .site-cta{padding:0 20px;background:var(--orange);color:#fff;box-shadow:0 9px 22px rgba(255,90,31,.23)}
.site-nav .site-cta:hover{background:var(--orange-dark);color:#fff;transform:translateY(-1px)}

/* breadcrumb */
.nav{display:flex;align-items:center;flex-wrap:wrap;gap:4px;margin:0 0 18px;color:var(--sub);font-size:14px;font-weight:500}
.nav a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;color:var(--navy);font-weight:700}
.nav a:hover{color:var(--orange-dark)}

/* editorial hero */
header.hero{position:relative;isolation:isolate;overflow:hidden;margin-bottom:24px;padding:48px 52px 46px;border:1px solid var(--line);border-top:6px solid var(--navy);border-radius:24px;background:#fff;box-shadow:var(--shadow)}
header.hero::before{content:"";position:absolute;z-index:-1;top:-98px;right:-86px;width:250px;height:250px;border:42px solid var(--orange-soft);border-radius:50%}
header.hero::after{content:"";position:absolute;z-index:-1;right:54px;bottom:34px;width:104px;height:7px;border-radius:99px;background:var(--orange);box-shadow:0 15px 0 var(--navy),0 30px 0 #dce4ed}
.hero-kicker{display:flex;align-items:center;flex-wrap:wrap;gap:9px;margin-bottom:22px;color:var(--navy);font-size:13px;font-weight:800;letter-spacing:.04em}
.hero-kicker strong{display:inline-flex;align-items:center;min-height:31px;padding:0 12px;border-radius:999px;background:var(--navy);color:#fff;font-family:Inter,"Noto Sans JP",sans-serif;font-size:12px;letter-spacing:.09em}
.hero-kicker span{display:inline-flex;align-items:center;min-height:31px;padding:0 12px;border:1px solid var(--line-strong);border-radius:999px;background:#fff}
header.hero h1{max-width:710px;margin:0;color:var(--navy);font-size:clamp(34px,5vw,48px);font-weight:900;letter-spacing:-.045em;line-height:1.34;text-wrap:balance}
header.hero p{max-width:700px;margin:20px 0 0;color:#495b6f;font-size:18px;font-weight:500;line-height:1.85}
.hero-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px 20px;margin-top:28px;padding-top:21px;border-top:1px solid var(--line);color:var(--sub);font-size:14px;font-weight:600}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta span::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--orange)}

/* article */
article{position:relative;padding:48px 54px 54px;border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:0 14px 44px rgba(11,35,64,.055)}
.updated{display:none}
article h2{position:relative;margin:52px 0 18px;padding:0 0 15px 22px;border-bottom:1px solid var(--line);color:var(--navy);font-size:28px;font-weight:900;letter-spacing:-.025em;line-height:1.45}
article h2::before{content:"";position:absolute;left:0;top:.24em;width:7px;height:1.05em;border-radius:99px;background:var(--orange)}
article h2::after{content:"";position:absolute;bottom:-1px;left:22px;width:74px;height:3px;border-radius:99px;background:var(--orange)}
article h3{margin:34px 0 12px;color:var(--navy-2);font-size:21px;font-weight:800;line-height:1.55}
article p{margin:16px 0}
article ul,article ol{margin:18px 0;padding-left:1.55em}
article li{margin:10px 0;padding-left:4px}
article li::marker{color:var(--orange);font-weight:900}
article strong{color:var(--orange-dark);font-weight:800}
article hr{margin:28px 0;border:0;border-top:1px solid var(--line)}
blockquote{position:relative;margin:24px 0;padding:24px 26px 24px 30px;border:1px solid #ffd5c6;border-left:6px solid var(--orange);border-radius:16px;background:linear-gradient(100deg,var(--orange-soft),#fff 72%);color:var(--navy);font-size:18px;font-weight:600;line-height:1.8}
blockquote strong{color:var(--navy);font-size:1.08em}
code{padding:2px 7px;border:1px solid var(--line);border-radius:6px;background:var(--soft);color:var(--navy);font-size:.94em}

/* table */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:24px 0;border:1px solid var(--line);border-radius:16px;background:#fff}
.table-wrap>table{margin:0;border:0;border-radius:0}
.table-wrap>table[data-cols="3"]{min-width:30em}.table-wrap>table[data-cols="4"]{min-width:38em}.table-wrap>table[data-cols="5"]{min-width:46em}
table{width:100%;border-collapse:separate;border-spacing:0;font-size:15px}
th,td{padding:15px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:var(--navy);color:#fff;font-weight:800}
tbody tr:last-child td{border-bottom:0}
tbody tr:nth-child(even) td{background:#f8fafc}
.table-hint{display:none}

/* toc */
.toc{margin:0 0 38px;padding:24px 26px;border:1px solid var(--line);border-radius:18px;background:var(--soft);font-size:15px}
.toc b{display:block;margin-bottom:10px;color:var(--navy);font-size:17px;font-weight:900}
.toc a{display:flex;align-items:center;min-height:44px;margin-bottom:6px;padding:8px 12px 8px 36px;border-radius:10px;color:var(--navy-2);font-weight:600;line-height:1.55;position:relative}
.toc a::before{content:"→";position:absolute;left:12px;color:var(--orange);font-family:Inter,sans-serif;font-weight:900}
.toc a:hover{background:#fff;color:var(--orange-dark)}
.toc a:last-child{margin-bottom:0}

/* every article declares its search intent, preventing guide/unit cannibalization */
.article-role{display:grid;grid-template-columns:1fr auto;align-items:center;gap:28px;margin:0 0 24px;padding:24px 28px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:0 10px 28px rgba(11,35,64,.045)}
.article-role>div>span{display:block;margin-bottom:5px;color:var(--orange-dark);font-family:Inter,sans-serif;font-size:10px;font-weight:900;letter-spacing:.13em}.article-role strong{display:block;color:var(--navy);font-size:18px;font-weight:900}.article-role p{margin-top:5px;color:var(--sub);font-size:13px;line-height:1.7}.article-role>a{display:inline-flex;min-height:44px;align-items:center;justify-content:center;padding:0 16px;border:1px solid var(--line-strong);border-radius:11px;color:var(--navy);font-size:12px;font-weight:900;white-space:nowrap}.article-role>a:hover{border-color:var(--orange);color:var(--orange-dark)}
.article-role.is-unit{border-top:5px solid var(--orange);background:linear-gradient(110deg,#fff 0,#fff8f4 100%)}.article-role.is-guide{border-left:6px solid var(--navy)}.article-role.is-motivation{border-top:5px solid #17a58a;background:linear-gradient(110deg,#fff 0,#f1fbf8 100%)}
.unit-article header.hero{border-top-color:var(--orange)}.unit-article .hero-kicker strong{background:var(--orange)}.motivation-article header.hero{border-top-color:#17a58a}.motivation-article .hero-kicker strong{background:#087461}

/* unit concept map: exact HTML text plus a light illustration, shared by every dictionary article */
.unit-concept{overflow:hidden;margin:0 0 28px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:0 16px 40px rgba(11,35,64,.075)}
.unit-concept.is-overview{margin-top:24px;border-color:#ffd0bf;box-shadow:0 16px 40px rgba(255,76,19,.09)}.unit-concept.is-overview .unit-concept-head span{background:var(--orange-dark)}
.unit-concept-head{position:relative;min-height:clamp(168px,23svh,205px);padding:24px 225px 20px 28px;background:linear-gradient(120deg,#f5f8fc 0 70%,#edf2f8 70%)}
.unit-concept-head::after{content:"";position:absolute;right:37px;top:-68px;width:205px;height:205px;border:31px solid rgba(11,35,64,.055);border-radius:50%}
.unit-concept-head>div{position:relative;z-index:2}.unit-concept-head span{display:inline-flex;min-height:31px;align-items:center;padding:0 12px;border-radius:999px;background:var(--navy);color:#fff;font-family:Inter,sans-serif;font-size:11px;font-weight:900;letter-spacing:.13em}.unit-concept h2{margin:11px 0 6px;padding:0;border:0;color:var(--navy);font-size:29px;line-height:1.32}.unit-concept h2::before,.unit-concept h2::after{display:none}.unit-concept-head p{margin:0;color:var(--sub);font-size:15px;font-weight:650;line-height:1.6}.unit-concept-head img{position:absolute;z-index:1;right:20px;bottom:-10px;width:190px;height:auto;filter:drop-shadow(0 12px 14px rgba(11,35,64,.13))}
.unit-concept-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(175px,1fr));gap:10px;margin:0;padding:15px 18px;list-style:none}.unit-concept-grid li{margin:0}.unit-concept-grid li>a{display:grid;grid-template-columns:45px 1fr;gap:12px;min-height:108px;padding:13px 14px;border:1px solid var(--line);border-radius:15px;background:linear-gradient(180deg,#fff,#fbfcfe);transition:.18s ease}.unit-concept-grid li>a:hover{border-color:#ffab8b;background:#fff8f4;transform:translateY(-2px)}.unit-concept-grid li b{display:grid;width:45px;height:45px;place-items:center;border-radius:13px;background:var(--orange-soft);color:var(--orange-dark);font-family:Inter,sans-serif;font-size:14px}.unit-concept-grid li strong{display:block;margin:1px 0 4px;color:var(--navy);font-size:17px;line-height:1.4}.unit-concept-grid li p{margin:0;color:var(--sub);font-size:13px;font-weight:600;line-height:1.5}.unit-concept-grid li em{display:block;margin-top:6px;color:var(--orange-dark);font-size:11px;font-style:normal;font-weight:900}
.review-hint{margin:0;padding:0 18px 12px;color:var(--sub);font-size:12px;font-weight:700;text-align:right}.is-review{scroll-margin-top:90px}article h2[id]{scroll-margin-top:90px}

/* topic-specific review diagrams: relationships stay visible instead of becoming another bullet list */
.semantic-matrix-wrap{display:grid;grid-template-columns:38px 1fr;grid-template-rows:1fr 30px;gap:7px;padding:14px 18px 8px}.semantic-y,.semantic-x{display:grid;place-items:center;color:var(--navy);font-size:14px;font-weight:900;letter-spacing:.05em}.semantic-y{writing-mode:vertical-rl;text-orientation:upright}.semantic-x{grid-column:2}.semantic-matrix{display:grid;grid-template-columns:1fr 1fr;gap:9px}.semantic-cell{position:relative;display:flex;min-height:clamp(112px,15svh,136px);flex-direction:column;justify-content:center;padding:14px 16px 24px;border:2px solid #dce5ef;border-radius:15px;background:#fff;box-shadow:0 7px 17px rgba(11,35,64,.05);transition:.18s ease}.semantic-cell:hover{border-color:var(--orange);transform:translateY(-2px)}.semantic-cell>b{color:var(--navy);font-size:23px;font-weight:900;line-height:1.28}.semantic-cell>span{margin-top:4px;color:var(--orange-dark);font-size:14px;font-weight:900}.semantic-cell>small{margin-top:7px;color:var(--sub);font-size:13px;font-weight:700}.semantic-cell>em,.force-node>em,.force-center>em,.compare-side>em,.semantic-stack a>em,.flow-node>em{position:absolute;right:9px;bottom:6px;color:var(--orange-dark);font-size:11px;font-style:normal;font-weight:900}.semantic-cell.is-1{border-color:#ffd0bf;background:#fff7f3}.semantic-cell.is-3{border-color:#b9d1e8;background:#f3f7fb}
.force-map{display:grid;grid-template-columns:1fr 1.25fr 1fr;grid-template-rows:clamp(84px,12svh,100px) clamp(108px,15svh,126px) clamp(84px,12svh,100px);gap:9px;padding:14px 18px}.force-node,.force-center{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:10px;border:2px solid #dce5ef;border-radius:15px;background:#fff;text-align:center;box-shadow:0 7px 17px rgba(11,35,64,.05);transition:.18s ease}.force-node:hover,.force-center:hover{border-color:var(--orange);transform:translateY(-2px)}.force-node b,.force-center b{color:var(--navy);font-size:17px;font-weight:900}.force-node span,.force-center span{margin-top:4px;color:var(--sub);font-size:13px;font-weight:700}.force-center{grid-column:2;grid-row:2;border-color:var(--navy);background:var(--navy)}.force-center b{color:#fff;font-size:20px}.force-center span{color:#cbd7e4}.force-node.is-top{grid-column:2;grid-row:1}.force-node.is-left{grid-column:1;grid-row:2}.force-node.is-right{grid-column:3;grid-row:2}.force-node.is-bottom{grid-column:2;grid-row:3}.force-node::after{position:absolute;color:var(--orange);font-size:21px;font-weight:900}.force-node.is-top::after{content:"↓";bottom:-24px}.force-node.is-left::after{content:"→";right:-21px}.force-node.is-right::after{content:"←";left:-21px}.force-node.is-bottom::after{content:"↑";top:-25px}
.semantic-flow{display:flex;align-items:stretch;gap:7px;padding:15px 18px}.semantic-flow>i{display:grid;place-items:center;color:var(--orange);font-size:19px;font-style:normal;font-weight:900}.flow-node{position:relative;display:flex;min-width:0;flex:1;min-height:120px;flex-direction:column;align-items:center;justify-content:center;padding:13px 9px 23px;border:1px solid var(--line);border-radius:15px;background:#fff;text-align:center;box-shadow:0 7px 16px rgba(11,35,64,.045);transition:.18s ease}.flow-node:hover{border-color:var(--orange);background:#fff8f4;transform:translateY(-2px)}.flow-node>b{display:grid;width:32px;height:32px;place-items:center;border-radius:50%;background:var(--navy);color:#fff;font-family:Inter,sans-serif;font-size:11px}.flow-node>strong{margin-top:7px;color:var(--navy);font-size:16px;font-weight:900;line-height:1.35}.flow-node>span{margin-top:4px;color:var(--sub);font-size:12px;font-weight:700;line-height:1.4}.semantic-flow.is-cycle{border-radius:17px;background:#f7f9fc}.semantic-flow .cycle-back{color:var(--navy);font-size:23px}
.semantic-compare{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:15px 18px}.compare-side{position:relative;display:flex;min-height:180px;flex-direction:column;justify-content:center;padding:21px 22px;border:2px solid #d9e3ed;border-radius:16px;background:#fff;transition:.18s ease}.compare-side:hover{border-color:var(--orange);transform:translateY(-2px)}.compare-side>b{color:var(--orange-dark);font-size:23px;font-weight:900}.compare-side>strong{margin-top:9px;color:var(--navy);font-size:18px;line-height:1.45}.compare-side>span{margin-top:7px;color:var(--sub);font-size:14px;font-weight:700;line-height:1.5}.compare-side.is-2{background:#f3f7fb}.semantic-compare>i{position:absolute;z-index:2;left:50%;top:50%;display:grid;width:46px;height:46px;place-items:center;border:4px solid #fff;border-radius:50%;background:var(--navy);color:#fff;font-family:Inter,sans-serif;font-size:12px;font-style:normal;font-weight:900;transform:translate(-50%,-50%)}
.semantic-stack{display:flex;flex-direction:column;align-items:center;gap:7px;padding:15px 18px}.semantic-stack>a{position:relative;display:flex;width:calc(100% - var(--level)*10%);min-height:72px;align-items:center;justify-content:space-between;gap:16px;padding:12px 40px 12px 18px;border:1px solid var(--line);border-left:7px solid var(--orange);border-radius:13px;background:#fff;box-shadow:0 6px 15px rgba(11,35,64,.045);transition:.18s ease}.semantic-stack>a:hover{border-color:var(--orange);transform:translateY(-2px)}.semantic-stack b{color:var(--navy);font-size:18px;font-weight:900}.semantic-stack span{color:var(--sub);font-size:14px;font-weight:700;text-align:right}

.semantic-hub{padding:15px 18px 18px}.insight-core{position:relative;display:flex;width:min(430px,72%);min-height:88px;align-items:center;justify-content:center;flex-direction:column;margin:auto;padding:12px 24px;border-radius:17px;background:var(--navy);color:#fff;text-align:center;box-shadow:0 10px 24px rgba(11,35,64,.14)}.insight-core::after{content:"";position:absolute;left:50%;bottom:-31px;width:2px;height:31px;background:var(--orange)}.insight-core>span{font-family:Inter,sans-serif;font-size:10px;font-weight:900;letter-spacing:.13em;color:#ffb397}.insight-core>b{margin-top:3px;font-size:21px;line-height:1.35}.insight-core>small{margin-top:2px;color:#ced9e5;font-size:12px;font-weight:700}.insight-spokes{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:30px;padding-top:18px}.insight-spokes::before{content:"";position:absolute;top:0;right:16.7%;left:16.7%;height:2px;background:var(--orange)}.insight-node{position:relative;display:flex;min-width:0;min-height:132px;align-items:center;justify-content:center;flex-direction:column;padding:15px 13px 26px;border:1px solid var(--line);border-radius:15px;background:#fff;text-align:center;box-shadow:0 7px 17px rgba(11,35,64,.05);transition:.18s ease}.insight-node::before{content:"";position:absolute;left:50%;top:-19px;width:2px;height:18px;background:var(--orange)}.insight-node:hover{border-color:var(--orange);background:#fff8f4;transform:translateY(-2px)}.insight-node>b{display:grid;width:31px;height:31px;place-items:center;border-radius:50%;background:var(--orange-soft);color:var(--orange-dark);font-family:Inter,sans-serif;font-size:11px}.insight-node>strong{display:-webkit-box;overflow:hidden;margin-top:7px;color:var(--navy);font-size:16px;font-weight:900;line-height:1.35;-webkit-box-orient:vertical;-webkit-line-clamp:2}.insight-node>span{display:-webkit-box;overflow:hidden;margin-top:4px;color:var(--sub);font-size:12px;font-weight:700;line-height:1.4;-webkit-box-orient:vertical;-webkit-line-clamp:2}.insight-node>em{position:absolute;right:9px;bottom:6px;color:var(--orange-dark);font-size:11px;font-style:normal;font-weight:900}

/* study-science chapter: exact HTML diagrams stay readable and responsive */
.motivation-visual{overflow:hidden;margin:0 0 28px;border:1px solid #cce9e2;border-radius:22px;background:#fff;box-shadow:0 16px 38px rgba(8,116,97,.08)}.motivation-visual-head{position:relative;min-height:260px;padding:38px 285px 32px 34px;background:linear-gradient(125deg,#f2fbf9 0 68%,#dff4ef 68%)}.motivation-visual-head>div>span{display:inline-flex;min-height:30px;align-items:center;padding:0 11px;border-radius:999px;background:#087461;color:#fff;font-family:Inter,sans-serif;font-size:10px;font-weight:900;letter-spacing:.12em}.motivation-visual h2{margin:15px 0 9px;padding:0;border:0;color:var(--navy);font-size:27px;line-height:1.45}.motivation-visual h2::before,.motivation-visual h2::after{display:none}.motivation-visual-head p{margin:0;color:var(--sub);font-size:15px;line-height:1.8}.motivation-visual-head img{position:absolute;right:20px;bottom:-12px;width:250px;height:auto;filter:drop-shadow(0 12px 14px rgba(11,35,64,.12))}.motivation-steps{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:stretch;gap:12px;padding:22px}.motivation-steps>i{display:grid;place-items:center;color:#17a58a;font-style:normal;font-size:22px;font-weight:900}.motivation-step{display:flex;min-height:135px;flex-direction:column;align-items:center;justify-content:center;padding:16px;border:1px solid #cce9e2;border-radius:16px;background:#fff;text-align:center}.motivation-step>b{display:inline-flex;min-height:28px;align-items:center;padding:0 9px;border-radius:999px;background:#087461;color:#fff;font-family:Inter,sans-serif;font-size:11px}.motivation-step>strong{margin:10px 0 4px;color:var(--navy);font-size:18px}.motivation-step>span{color:var(--sub);font-size:12px;font-weight:700}

/* every strategy guide opens with a topic-specific coach reaction and a readable concept map */
.guide-visual{display:grid;grid-template-columns:300px 1fr;overflow:hidden;margin:0 0 24px;border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:0 18px 44px rgba(11,35,64,.07)}
.guide-coach{position:relative;isolation:isolate;min-height:390px;overflow:hidden;background:linear-gradient(155deg,var(--navy) 0 64%,#173b63 64%)}
.guide-coach::before{content:"";position:absolute;z-index:-1;top:-78px;right:-72px;width:190px;height:190px;border:30px solid rgba(255,255,255,.09);border-radius:50%}
.guide-coach::after{content:"";position:absolute;z-index:-1;right:24px;bottom:28px;width:72px;height:7px;border-radius:99px;background:var(--orange);box-shadow:0 14px 0 rgba(255,255,255,.88),0 28px 0 rgba(255,255,255,.26)}
.guide-coach-copy{position:relative;z-index:2;margin:22px 18px 0;padding:17px 17px 19px;border:1px solid rgba(255,255,255,.75);border-radius:17px;background:#fff;color:var(--navy);box-shadow:0 12px 28px rgba(4,20,38,.2)}
.guide-coach-copy::after{content:"";position:absolute;left:44px;bottom:-11px;width:20px;height:20px;border-right:1px solid rgba(11,35,64,.14);border-bottom:1px solid rgba(11,35,64,.14);background:#fff;transform:rotate(45deg)}
.guide-coach-copy span{display:block;margin-bottom:7px;color:var(--orange-dark);font-family:Inter,sans-serif;font-size:12px;font-weight:900;letter-spacing:.12em}
.guide-coach-copy p{margin:0;font-size:17px;font-weight:900;line-height:1.6}
.guide-coach img{position:absolute;z-index:1;right:-9px;bottom:-23px;width:268px;height:272px;object-fit:contain;object-position:center bottom;filter:drop-shadow(0 14px 15px rgba(0,0,0,.2))}
.guide-map{display:flex;min-width:0;flex-direction:column;padding:32px 30px 28px;background:linear-gradient(180deg,#fff 0,#f8fafc 100%)}
.guide-map header>span{display:inline-flex;min-height:31px;align-items:center;padding:0 12px;border-radius:999px;background:var(--orange-soft);color:var(--orange-dark);font-family:Inter,sans-serif;font-size:12px;font-weight:900;letter-spacing:.11em}
.guide-map h2{margin:12px 0 5px;color:var(--navy);font-size:27px;font-weight:900;letter-spacing:-.03em;line-height:1.4}
.guide-map header p{color:var(--sub);font-size:14px;font-weight:600;line-height:1.7}
.guide-map-steps{display:grid;gap:9px;margin-top:19px}
.guide-map-step{display:grid;grid-template-columns:48px 1fr auto;align-items:center;gap:13px;min-height:72px;padding:10px 14px 10px 10px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:0 7px 18px rgba(11,35,64,.04);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}
.guide-map-step:hover{border-color:#ffad8e;transform:translateX(3px);box-shadow:0 10px 22px rgba(11,35,64,.08)}
.guide-map-step b{display:grid;place-items:center;width:48px;height:48px;border-radius:12px;background:var(--navy);color:#fff;font-family:Inter,sans-serif;font-size:16px;font-weight:900}
.guide-map-step:nth-child(2) b{background:var(--navy-2)}.guide-map-step:nth-child(3) b{background:var(--orange)}
.guide-map-step span{color:var(--navy);font-size:15px;font-weight:800;line-height:1.55}
.guide-map-step em{color:var(--orange-dark);font-size:12px;font-style:normal;font-weight:900;white-space:nowrap}

/* instructor and visual explanations for selected unit articles */
.learning-visual{margin:0 0 48px}
.teacher-panel{position:relative;isolation:isolate;min-height:330px;overflow:hidden;margin:0 0 20px;padding:42px 290px 40px 34px;border:1px solid var(--line);border-radius:20px;background:linear-gradient(112deg,#fff 0 67%,#f2f5f8 67%);box-shadow:0 12px 32px rgba(11,35,64,.055)}
.teacher-panel::after{content:"";position:absolute;z-index:-1;right:-36px;top:-45px;width:190px;height:190px;border:30px solid var(--orange-soft);border-radius:50%}
.teacher-label{display:inline-flex;align-items:center;min-height:31px;padding:0 12px;border-radius:999px;background:var(--orange);color:#fff;font-size:13px;font-weight:900;letter-spacing:.04em}
.teacher-panel h2{margin:18px 0 12px;padding:0;border:0;color:var(--navy);font-size:27px;line-height:1.45;text-wrap:balance}
.teacher-panel h2::before,.teacher-panel h2::after{display:none}
.teacher-panel p{margin:0;color:#46596d;font-size:16px;line-height:1.85}
.teacher-image{position:absolute;z-index:1;right:10px;bottom:-8px;width:280px;height:auto;object-fit:contain;filter:drop-shadow(0 12px 14px rgba(11,35,64,.12))}
.diagram-panel{margin:0 0 16px;padding:32px;border:1px solid var(--line);border-radius:20px;background:var(--soft)}
.diagram-heading{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:4px 14px;margin-bottom:24px}
.diagram-heading>span{grid-row:1/3;display:grid;place-items:center;align-self:stretch;padding:8px 11px;border-radius:10px;background:var(--navy);color:#fff;font-family:Inter,sans-serif;font-size:11px;font-weight:900;letter-spacing:.09em;writing-mode:vertical-rl}
.diagram-heading h3{margin:0;color:var(--navy);font-size:22px;line-height:1.45}
.diagram-heading p{margin:0;color:var(--sub);font-size:14px;font-weight:700}
.ai-concept{margin:0 0 24px}
.ai-concept-series+.ai-concept-series{margin-top:36px;padding-top:36px;border-top:1px solid var(--line)}
.ai-concept-frame{display:grid;place-items:center;width:min(100%,520px);max-height:min(72vh,680px);margin-inline:auto;overflow:hidden;border:1px solid var(--line);border-radius:16px;background:#fff}
.ai-concept-frame img{display:block;width:auto;max-width:100%;height:auto;max-height:min(72vh,680px);object-fit:contain}
.ai-concept figcaption{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;margin:12px 2px 0}
.ai-concept figcaption>span{display:inline-flex;align-items:center;min-height:27px;padding:0 9px;border-radius:999px;background:var(--navy);color:#fff;font-family:Inter,sans-serif;font-size:10px;font-weight:900;letter-spacing:.08em}
.ai-concept figcaption p{margin:0;color:var(--sub);font-size:14px;line-height:1.7}
.ai-concept-key{display:grid;grid-template-columns:repeat(5,1fr);gap:7px;margin:14px 0 0;padding:0;list-style:none}
.ai-concept-key li{display:flex;min-height:68px;flex-direction:column;justify-content:center;margin:0;padding:10px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--navy);font-size:12px;font-weight:800;line-height:1.45;text-align:center}
.ai-concept-key li b{color:var(--orange);font-family:Inter,sans-serif;font-size:11px}
.visual-equation{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:stretch;gap:10px}
.visual-node{display:flex;min-height:118px;flex-direction:column;align-items:center;justify-content:center;padding:16px;border:1px solid var(--line-strong);border-radius:16px;background:#fff;color:var(--navy)}
.visual-node small{font-size:14px;font-weight:800}.visual-node strong{font-family:Inter,"Noto Sans JP",sans-serif;font-size:31px;line-height:1.25}.visual-node.is-muted{background:#e9eef4}.visual-node.is-accent{border-color:#ffb89e;background:var(--orange-soft);color:var(--orange-dark)}
.visual-op{display:grid;place-items:center;color:var(--navy);font-family:Inter,sans-serif;font-size:27px;font-weight:900}
.recovery-flow,.decision-strip,.advantage-scale{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:16px;padding:15px 16px;border-radius:14px;background:var(--navy);color:#fff;font-size:14px;font-weight:800;text-align:center}
.recovery-flow span,.advantage-scale span{flex:1}.recovery-flow b{color:var(--orange);font-size:20px}.recovery-flow .is-goal,.advantage-scale .is-goal{color:#ff9a75}
.compare-diagram,.ratio-diagram{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.compare-card,.ratio-card{padding:22px;border:1px solid var(--line-strong);border-top:5px solid var(--navy);border-radius:16px;background:#fff;text-align:center}
.compare-card.is-accent,.ratio-card.is-accent{border-top-color:var(--orange)}
.diagram-tag{display:inline-flex;align-items:center;min-height:27px;padding:0 9px;border-radius:999px;background:var(--soft);color:var(--sub);font-family:Inter,"Noto Sans JP",sans-serif;font-size:11px;font-weight:900;letter-spacing:.05em}
.compare-card h4,.ratio-card h4{margin:10px 0 5px;color:var(--navy);font-size:26px}.compare-card p,.ratio-card p{margin:5px 0;color:var(--sub);font-size:14px}.compare-card>b{display:block;margin-top:10px;color:var(--navy);font-size:16px}.compare-card.is-accent>b{color:var(--orange-dark)}
.needs-ladder{display:flex;flex-direction:column;align-items:center;margin-top:18px;gap:5px}.needs-ladder span{display:grid;place-items:center;min-height:34px;border-radius:7px;background:var(--navy);color:#fff;font-size:13px;font-weight:800}.needs-ladder span:nth-child(1){width:38%;background:var(--orange)}.needs-ladder span:nth-child(2){width:50%}.needs-ladder span:nth-child(3){width:62%}.needs-ladder span:nth-child(4){width:74%}.needs-ladder span:nth-child(5){width:86%}
.fraction{display:grid;grid-template-rows:auto 3px auto;gap:7px;margin:15px auto;max-width:180px;color:var(--navy);font-size:15px}.fraction i{display:block;background:var(--orange)}
.diagram-note{display:flex;justify-content:space-between;gap:14px;margin-top:16px;padding:14px 17px;border:1px solid var(--line);border-radius:13px;background:#fff;color:var(--sub);font-size:14px}.diagram-note b{color:var(--navy)}
.stage-flow,.vrio-flow{display:grid;grid-template-columns:1fr auto 1fr auto 1fr auto 1.15fr;align-items:stretch;gap:8px}
.stage-flow>i,.vrio-flow>i{display:grid;place-items:center;color:var(--orange);font-style:normal;font-size:22px;font-weight:900}
.stage-node,.vrio-node{display:flex;min-height:150px;flex-direction:column;align-items:center;justify-content:center;padding:14px 10px;border:1px solid var(--line-strong);border-radius:15px;background:#fff;text-align:center}.stage-node>b,.vrio-node>b{display:grid;place-items:center;width:46px;height:46px;margin-bottom:10px;border-radius:13px;background:var(--navy);color:#fff;font-family:Inter,sans-serif;font-size:22px}.stage-node>span,.vrio-node>span{color:var(--navy);font-size:14px;font-weight:900}.stage-node>small,.vrio-node>small{margin-top:6px;color:var(--sub);font-size:10px;font-weight:700}.stage-node.is-accent,.vrio-node.is-accent{border-color:#ffb89e;background:var(--orange-soft)}.stage-node.is-accent>b,.vrio-node.is-accent>b{background:var(--orange)}
.timeline-diagram{display:grid;grid-template-columns:150px 1fr;gap:14px;align-items:center}.time-now{display:flex;min-height:135px;flex-direction:column;align-items:center;justify-content:center;border-radius:16px;background:var(--navy);color:#fff}.time-now small{font-size:12px}.time-now b{font-size:16px}.time-now strong{color:#ff9a75;font-family:Inter,sans-serif;font-size:28px}.time-line{position:relative;display:flex;align-items:center;justify-content:space-around;height:16px}.time-line::before{content:"";position:absolute;left:0;right:0;height:3px;background:var(--navy)}.time-line span,.time-line i{position:relative;width:15px;height:15px;border:4px solid var(--navy);border-radius:50%;background:#fff}.time-line i{border-color:var(--orange)}.time-future{grid-column:2;display:grid;grid-template-columns:1fr 1fr;gap:10px}.time-future>div{padding:13px;border:1px solid var(--line-strong);border-radius:12px;background:#fff;text-align:center}.time-future small{display:block;color:var(--sub);font-size:12px}.time-future b{color:var(--navy);font-size:14px}.decision-strip{justify-content:stretch}.decision-strip span{flex:1}.decision-strip b{display:block;color:#ff9a75;font-size:17px}
.advantage-scale{justify-content:stretch}.advantage-scale span{position:relative}.advantage-scale span:not(:last-child)::after{content:"→";position:absolute;right:-8px;color:#ff9a75}
.exam-lens{display:grid;grid-template-columns:200px 1fr;gap:22px;align-items:center;padding:24px 26px;border:1px solid var(--line);border-left:7px solid var(--orange);border-radius:17px;background:#fff}.exam-lens>div>span{display:block;color:var(--orange-dark);font-family:Inter,sans-serif;font-size:12px;font-weight:900;letter-spacing:.08em}.exam-lens>div>strong{display:block;margin-top:5px;color:var(--navy);font-size:18px;line-height:1.5}.exam-lens ol{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:0;padding:0;list-style:none}.exam-lens li{margin:0}.exam-lens li>a{display:flex;min-height:88px;flex-direction:column;justify-content:center;padding:12px;border-radius:12px;background:var(--soft);transition:.18s ease}.exam-lens li>a:hover{background:var(--orange-soft)}.exam-lens li b{color:var(--orange);font-family:Inter,sans-serif;font-size:13px}.exam-lens li span{color:var(--navy);font-size:13px;font-weight:800;line-height:1.5}.exam-lens li em{margin-top:5px;color:var(--orange-dark);font-size:9px;font-style:normal;font-weight:900}

/* conversion block */
.cta{position:relative;overflow:hidden;margin:48px 0 12px;padding:38px 34px;border-radius:20px;background:var(--navy);color:#fff;text-align:center}
.cta::after{content:"";position:absolute;right:-38px;top:-38px;width:130px;height:130px;border:24px solid rgba(255,90,31,.2);border-radius:50%}
.cta h3{position:relative;margin:0 0 10px;padding:0;border:0;color:#fff;font-size:23px;font-weight:900}
.cta h3::before,.cta h3::after{display:none}
.cta p{position:relative;margin:8px auto;max-width:580px;color:#dce6f0;font-size:16px}
.cta a.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;min-height:54px;margin-top:18px;padding:0 28px;border-radius:13px;background:var(--orange);color:#fff;font-size:16px;font-weight:900;box-shadow:0 12px 26px rgba(0,0,0,.2)}
.cta a.btn:hover{background:#ff7144;transform:translateY(-2px)}

/* quiz */
.quiz{position:relative;margin:48px 0 0;padding:32px;border:1px solid var(--line);border-top:7px solid var(--orange);border-radius:20px;background:#fff;box-shadow:0 16px 42px rgba(11,35,64,.07)}
.quiz::before{content:"3 QUESTIONS";display:inline-flex;align-items:center;min-height:30px;margin-bottom:14px;padding:0 11px;border-radius:999px;background:var(--navy);color:#fff;font-family:Inter,sans-serif;font-size:12px;font-weight:900;letter-spacing:.08em}
.quiz h2{margin:0 0 8px;padding:0;border:0;font-size:27px}
.quiz h2::before,.quiz h2::after{display:none}
.quiz-lead{margin:0 0 26px;color:var(--sub);font-size:15px}
.quiz-list{list-style:none;margin:0;padding:0}
.quiz-q{margin:0 0 26px;padding:0 0 26px;border-bottom:1px solid var(--line)}
.quiz-q:last-child{margin-bottom:0;padding-bottom:0;border-bottom:0}
.quiz-text{margin:0 0 14px;color:var(--navy);font-size:17px;font-weight:700;line-height:1.75}
.quiz-text b{display:inline-block;margin-right:4px;color:var(--orange-dark);font-weight:900}
.quiz-opts{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.quiz-opt{width:100%;min-height:54px;padding:13px 15px;border:1px solid var(--line-strong);border-radius:12px;background:#fff;color:var(--ink);font:inherit;font-size:15px;font-weight:600;line-height:1.6;text-align:left;cursor:pointer;transition:.15s ease}
.quiz-opt b{color:var(--navy);font-family:Inter,sans-serif}
.quiz-opt:hover:enabled{border-color:var(--orange);background:var(--orange-soft);transform:translateY(-1px)}
.quiz-opt:disabled{cursor:default;opacity:.88}
.quiz-opt.is-answer{border-color:var(--success);background:#ecf9f2;opacity:1}
.quiz-opt.is-wrong{border-color:var(--orange);background:var(--orange-soft);opacity:1}
.quiz-why{display:grid;grid-template-columns:150px 1fr;align-items:stretch;min-height:190px;overflow:hidden;margin:14px 0 0;border:1px solid var(--line);border-radius:16px;background:var(--soft);font-size:15px;line-height:1.8;animation:coach-in .26s ease-out}
.quiz-why[hidden]{display:none}
.quiz-why.is-correct{border-color:#addfc7;background:linear-gradient(110deg,#eefaf4,#fff 70%)}
.quiz-why.is-wrong{border-color:#ffd0bf;background:linear-gradient(110deg,var(--orange-soft),#fff 70%)}
.quiz-coach{align-self:end;width:100%;height:190px;object-fit:contain;object-position:center bottom;filter:drop-shadow(0 8px 10px rgba(11,35,64,.1))}
.quiz-feedback-copy{display:flex;flex-direction:column;justify-content:center;padding:22px 22px 22px 8px}
.quiz-verdict{display:block;color:var(--navy);font-size:21px;font-weight:900;line-height:1.4}
.quiz-why.is-correct .quiz-verdict{color:var(--success)}
.quiz-why.is-wrong .quiz-verdict{color:var(--orange-dark)}
.quiz-coach-line{display:block;margin:7px 0 10px;color:var(--navy);font-size:15px;font-weight:800;line-height:1.65}
.quiz-explanation{margin:0!important;color:#4c5d70;font-size:14px;line-height:1.8}
.quiz-explanation strong,.quiz-explanation b{color:var(--navy)}
@keyframes coach-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.quiz-score{margin:22px 0 0;color:var(--navy);font-size:21px;font-weight:900;text-align:center}
.quiz-cta{margin:18px 0 0;padding:24px;border-radius:16px;background:var(--navy);color:#fff;text-align:center}
.quiz-cta-text{margin:0 0 14px;color:#e5edf5;font-size:15px}
.quiz-cta .btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 22px;border-radius:12px;background:var(--orange);color:#fff;font-weight:900}
.quiz-again{margin-top:12px}
.quiz-retry{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border:1px solid rgba(255,255,255,.42);border-radius:12px;background:transparent;color:#fff;font:inherit;font-size:14px;font-weight:700;cursor:pointer}
.quiz-retry:hover{background:rgba(255,255,255,.1)}
.quiz-share{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px;margin:16px 0 0;color:#dce6f0;font-size:14px}
.quiz-share a{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:0 16px;border-radius:999px;color:#fff;font-weight:800}
.quiz-share .share-x{background:#050505}.quiz-share .share-line{background:#06c755}.quiz-share a:hover{filter:brightness(1.08)}

/* related and index */
.related{margin-top:24px;padding:28px 30px;border:1px solid var(--line);border-radius:20px;background:#fff}
.related h3{margin:0 0 12px;color:var(--navy);font-size:19px;font-weight:900}
.related a{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;min-height:52px;margin-bottom:8px;padding:8px 13px;border-radius:10px;color:var(--navy-2);font-weight:700}
.related a>span{display:inline-flex;align-items:center;min-height:24px;padding:0 8px;border-radius:999px;background:var(--soft);color:var(--sub);font-size:9px;font-weight:900;white-space:nowrap}
.related a::after{content:"→";margin-left:auto;color:var(--orange);font-family:Inter,sans-serif}
.related a:hover{background:var(--orange-soft);color:var(--orange-dark)}
.related a:last-child{margin-bottom:0}
.card-link{display:block;margin-bottom:16px;padding:26px 28px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:0 10px 30px rgba(11,35,64,.05);transition:.18s ease}
.card-link:hover{border-color:#ffc2ac;box-shadow:0 18px 38px rgba(11,35,64,.09);transform:translateY(-3px)}
.card-link h2{margin:0 0 8px;color:var(--navy);font-size:21px;font-weight:900}.card-link h2::after{content:"→";float:right;color:var(--orange);font-family:Inter,sans-serif}
.card-link p{margin:0;color:var(--sub);font-size:15px}.card-link .k{font-size:0}
h2.group{margin:38px 0 8px;padding-left:16px;border-left:6px solid var(--orange);color:var(--navy);font-size:24px;font-weight:900}.group-lead{margin:0 0 18px;padding-left:22px;color:var(--sub);font-size:15px}

/* knowledge-base index: strategy guides and unit library stay deliberately separate */
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.knowledge-index{background:linear-gradient(180deg,#fff 0,#f6f8fb 540px,#f6f8fb 100%)}
.knowledge-index .wrap{width:min(100% - 40px,1120px)}
.knowledge-hero{position:relative;isolation:isolate;display:grid;grid-template-columns:minmax(0,1.65fr) minmax(260px,.7fr);gap:48px;overflow:hidden;margin-bottom:34px;padding:58px 60px;border:1px solid var(--line);border-radius:28px;background:#fff;box-shadow:var(--shadow)}
.knowledge-hero::before{content:"";position:absolute;z-index:-1;top:-128px;right:-105px;width:360px;height:360px;border:52px solid var(--orange-soft);border-radius:50%}
.knowledge-hero::after{content:"";position:absolute;z-index:-1;left:0;bottom:0;width:42%;height:6px;background:var(--orange)}
.knowledge-hero-copy h1{max-width:730px;color:var(--navy);font-size:clamp(38px,5.4vw,60px);font-weight:900;letter-spacing:-.05em;line-height:1.25;text-wrap:balance}
.knowledge-hero-copy>p{max-width:700px;margin-top:22px;color:#475a70;font-size:18px;font-weight:500;line-height:1.9}
.knowledge-stats{align-self:stretch;display:grid;grid-template-columns:1fr;gap:10px;padding:16px;border:1px solid rgba(255,255,255,.13);border-radius:22px;background:var(--navy);box-shadow:0 24px 44px rgba(11,35,64,.18)}
.knowledge-stats div{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:15px 16px;border-bottom:1px solid rgba(255,255,255,.12);color:#fff}.knowledge-stats div:last-child{border-bottom:0}
.knowledge-stats strong{color:#fff;font-family:Inter,"Noto Sans JP",sans-serif;font-size:34px;line-height:1}.knowledge-stats span{color:#c8d5e4;font-size:13px;font-weight:800}
.section-title{margin-bottom:22px}.section-title>span{display:block;margin-bottom:7px;color:var(--orange-dark);font-family:Inter,sans-serif;font-size:12px;font-weight:900;letter-spacing:.13em}.section-title h2{color:var(--navy);font-size:30px;font-weight:900;letter-spacing:-.03em}.section-title p{margin-top:7px;color:var(--sub);font-size:15px}.section-title.is-compact{margin-bottom:16px}.section-title.is-compact h2{font-size:24px}
.route-section{margin:54px 0}.route-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.route-card{position:relative;overflow:hidden;min-height:255px;padding:30px 26px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:0 14px 34px rgba(11,35,64,.06);transition:.2s ease}.route-card:hover{transform:translateY(-4px);box-shadow:0 22px 44px rgba(11,35,64,.1)}
.route-card>span{display:block;margin-bottom:24px;font-family:Inter,sans-serif;font-size:11px;font-weight:900;letter-spacing:.14em}.route-card>strong{display:block;color:var(--navy);font-size:27px;font-weight:900}.route-card>p{max-width:420px;margin-top:11px;color:var(--sub);font-size:15px;line-height:1.8}.route-card>b{position:absolute;left:32px;bottom:27px;color:var(--orange-dark);font-size:14px;font-weight:900}
.route-card.is-guide{border-color:var(--navy);background:var(--navy)}.route-card.is-guide>span,.route-card.is-guide>b{color:#ff9c78}.route-card.is-guide>strong{color:#fff}.route-card.is-guide>p{color:#c7d3e1}.route-card.is-guide::after{content:"01";position:absolute;right:18px;bottom:-35px;color:rgba(255,255,255,.055);font-family:Inter,sans-serif;font-size:150px;font-weight:900;line-height:1}
.route-card.is-motivation{border-top:6px solid #17a58a;background:linear-gradient(145deg,#fff,#f1fbf8)}.route-card.is-motivation>span,.route-card.is-motivation>b{color:#087461}
.route-card.is-unit{border-top:6px solid var(--orange)}.route-card.is-unit::after{content:"02";position:absolute;right:18px;bottom:-35px;color:rgba(255,90,31,.055);font-family:Inter,sans-serif;font-size:150px;font-weight:900;line-height:1}
.quick-start{margin:0 0 58px;padding:28px;border:1px solid var(--line);border-radius:22px;background:#fff}.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.quick-grid a{min-height:142px;padding:18px;border:1px solid var(--line);border-radius:15px;background:var(--soft);transition:.18s ease}.quick-grid a:hover{border-color:#ffb99e;background:var(--orange-soft);transform:translateY(-2px)}.quick-grid b{display:block;color:var(--orange);font-family:Inter,sans-serif;font-size:12px}.quick-grid span{display:block;margin-top:16px;color:var(--navy);font-size:16px;font-weight:900}.quick-grid strong{display:block;margin-top:8px;color:var(--sub);font-size:12px;line-height:1.6}
.knowledge-browser{position:relative}.knowledge-toolbar{position:sticky;top:82px;z-index:20;display:grid;grid-template-columns:minmax(260px,1fr) auto auto;align-items:end;gap:16px;margin-bottom:42px;padding:18px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.96);box-shadow:0 15px 34px rgba(11,35,64,.1);backdrop-filter:blur(12px)}
.knowledge-search span{display:block;margin:0 0 6px 4px;color:var(--navy);font-size:12px;font-weight:900}.knowledge-search input{width:100%;height:48px;padding:0 16px;border:1px solid var(--line-strong);border-radius:12px;background:#fff;color:var(--navy);font:inherit;font-size:15px;outline:none}.knowledge-search input:focus{border-color:var(--orange);box-shadow:0 0 0 4px rgba(255,90,31,.12)}
.knowledge-filters{display:flex;gap:6px}.knowledge-filters button{min-height:48px;padding:0 15px;border:1px solid var(--line);border-radius:11px;background:#fff;color:var(--navy);font:inherit;font-size:13px;font-weight:800;cursor:pointer}.knowledge-filters button:hover{border-color:#ffb99e}.knowledge-filters button.is-active{border-color:var(--navy);background:var(--navy);color:#fff}.knowledge-result{min-width:96px;padding-bottom:10px;color:var(--sub);font-size:12px;text-align:right}.knowledge-result b{margin-right:3px;color:var(--orange-dark);font-family:Inter,sans-serif;font-size:22px}
.content-hub{margin:0 0 78px;scroll-margin-top:168px}.content-hub-head{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:22px;margin-bottom:24px;padding-bottom:24px;border-bottom:1px solid var(--line)}.hub-number{display:grid;place-items:center;width:66px;height:66px;border-radius:18px;background:var(--navy);color:#fff;font-family:Inter,sans-serif;font-size:21px;font-weight:900}.content-hub.is-unit .hub-number{background:var(--orange)}.content-hub.is-motivation .hub-number{background:#087461}.content-hub-head>div>b{display:block;margin-bottom:4px;color:var(--orange-dark);font-family:Inter,sans-serif;font-size:11px;letter-spacing:.12em}.content-hub.is-motivation .content-hub-head>div>b{color:#087461}.content-hub-head h2{color:var(--navy);font-size:30px;font-weight:900;letter-spacing:-.03em}.content-hub-head p{max-width:760px;margin-top:6px;color:var(--sub);font-size:14px}.content-hub-head>strong{align-self:start;padding:8px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--navy);font-size:12px}
.content-group{margin-top:26px;padding:30px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:0 12px 36px rgba(11,35,64,.045);scroll-margin-top:170px}.content-group-head{display:grid;grid-template-columns:1fr auto;align-items:start;gap:24px;margin-bottom:20px}.content-group-head span{display:block;margin-bottom:5px;color:var(--orange-dark);font-family:Inter,sans-serif;font-size:10px;font-weight:900;letter-spacing:.13em}.content-group-head h3{color:var(--navy);font-size:23px;font-weight:900;letter-spacing:-.02em}.content-group-head p{margin-top:5px;color:var(--sub);font-size:14px}.content-group-head>b{padding:6px 10px;border-radius:999px;background:var(--soft);color:var(--sub);font-size:11px}
.knowledge-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.knowledge-card{position:relative;display:flex;min-height:228px;flex-direction:column;padding:23px;border:1px solid var(--line);border-radius:16px;background:#fff;transition:.18s ease}.knowledge-card:hover{border-color:#ffb89b;box-shadow:0 16px 34px rgba(11,35,64,.09);transform:translateY(-3px)}.knowledge-card[data-content-type="unit"]{background:linear-gradient(145deg,#fff 0,#fff9f6 100%)}.knowledge-card[data-content-type="motivation"]{background:linear-gradient(145deg,#fff 0,#f2fbf9 100%)}
.knowledge-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:15px}.content-badge{display:inline-flex;align-items:center;min-height:27px;padding:0 9px;border-radius:999px;font-size:10px;font-weight:900}.content-badge.is-guide{background:var(--navy);color:#fff}.content-badge.is-unit{background:var(--orange);color:#fff}.content-badge.is-motivation{background:#087461;color:#fff}.content-format{color:#7b8998;font-size:10px;font-weight:800}.knowledge-card h4{color:var(--navy);font-size:18px;font-weight:900;line-height:1.55}.knowledge-card p{margin:10px 0 22px;color:var(--sub);font-size:13px;line-height:1.75}.knowledge-card-action{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);color:var(--navy);font-size:12px;font-weight:900}.knowledge-card-action b{color:var(--orange);font-family:Inter,sans-serif;font-size:17px}
.knowledge-empty{margin:32px 0;padding:40px;border:1px dashed var(--line-strong);border-radius:18px;background:#fff;text-align:center}.knowledge-empty strong{color:var(--navy);font-size:20px}.knowledge-empty p{margin-top:7px;color:var(--sub);font-size:14px}
.knowledge-conversion{display:flex;align-items:center;justify-content:space-between;gap:34px;margin:72px 0 0;padding:38px 42px;border-radius:24px;background:var(--navy);color:#fff;box-shadow:0 24px 48px rgba(11,35,64,.18)}.knowledge-conversion span{color:#ff9a75;font-family:Inter,sans-serif;font-size:11px;font-weight:900;letter-spacing:.14em}.knowledge-conversion h2{margin-top:6px;font-size:27px;font-weight:900}.knowledge-conversion p{margin-top:8px;color:#c7d3e1;font-size:14px}.knowledge-conversion>a{flex:0 0 auto;display:inline-flex;min-height:52px;align-items:center;justify-content:center;padding:0 24px;border-radius:13px;background:var(--orange);color:#fff;font-size:14px;font-weight:900;box-shadow:0 12px 26px rgba(255,90,31,.25)}.knowledge-conversion>a:hover{background:#ff6c36;transform:translateY(-2px)}

/* footnotes and footer */
.note-official{margin-top:20px;color:#788697;font-size:13px;line-height:1.8}
.site-foot{margin-top:0;border-top:1px solid var(--line);background:var(--navy)}
.site-foot-in{width:min(100% - 32px,1120px);margin:0 auto;padding:36px 0;color:#afbed0}.site-foot-links{display:flex;flex-wrap:wrap;gap:6px 20px;margin-bottom:18px}
.site-foot-links a{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;color:#fff;font-size:14px;font-weight:600}.site-foot-links a:hover{color:#ff9a75}.site-foot-in p{font-size:13px;line-height:1.8}
.to-top{position:fixed;right:18px;bottom:18px;z-index:40;display:none;width:50px;height:50px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:50%;background:#fff;color:var(--navy);font-size:20px;font-weight:900;box-shadow:0 10px 28px rgba(11,35,64,.16)}.to-top.is-shown{display:flex}.to-top:hover{border-color:var(--orange);color:var(--orange)}

@media(max-width:700px){
  body{font-size:16.5px;line-height:1.85}.wrap{width:min(100% - 28px,900px);padding-top:18px}.site-bar-in{min-height:64px}.site-nav a:not(.site-cta){display:none}.site-logo{font-size:17px}.site-logo::before{width:28px;height:28px;font-size:16px}.site-nav .site-cta{padding:0 16px}.nav{margin-bottom:12px;font-size:13px}
  header.hero{padding:34px 26px 32px;border-radius:20px}header.hero::before{top:-115px;right:-115px}header.hero::after{right:26px;bottom:24px;width:66px;height:5px;box-shadow:0 11px 0 var(--navy),0 22px 0 #dce4ed}.hero-kicker{margin-bottom:18px}.hero-kicker strong,.hero-kicker span{min-height:29px;padding:0 10px;font-size:11px}header.hero h1{font-size:clamp(30px,8.2vw,36px);line-height:1.38}header.hero p{margin-top:16px;padding-right:18px;font-size:16px;line-height:1.75}.hero-meta{gap:8px 15px;margin-top:22px;padding-top:17px;font-size:13px}
  article{padding:32px 22px 38px;border-radius:20px}article h2{margin-top:42px;padding-left:18px;font-size:24px}article h2::before{width:6px}article h2::after{left:18px}article h3{margin-top:28px;font-size:19px}blockquote{padding:20px 18px 20px 21px;font-size:16.5px}.toc{margin-bottom:30px;padding:20px 16px}.toc a{padding-left:32px;font-size:14.5px}
  .article-role{grid-template-columns:1fr;gap:16px;padding:21px 19px}.article-role>a{width:100%}.article-role strong{font-size:17px}.related a{grid-template-columns:auto 1fr auto;gap:8px;font-size:13px}.related a>span{font-size:8px}
  .guide-visual{grid-template-columns:1fr;border-radius:20px}.guide-coach{min-height:385px}.guide-coach-copy{margin:18px 17px 0}.guide-coach-copy p{font-size:17px}.guide-coach img{right:50%;bottom:-22px;width:270px;height:270px;transform:translateX(50%)}.guide-map{padding:27px 18px 22px}.guide-map h2{font-size:23px}.guide-map header p{font-size:14px}.guide-map-step{grid-template-columns:44px 1fr;gap:11px;min-height:76px;padding:10px 12px 10px 9px}.guide-map-step b{width:44px;height:44px}.guide-map-step span{font-size:14px}.guide-map-step em{display:none}
  .table-hint{display:block;margin:18px 0 -14px;color:var(--sub);font-size:13px}.quiz{padding:25px 18px;border-radius:17px}.quiz h2{font-size:23px}.quiz-opts{grid-template-columns:1fr}.quiz-opt{font-size:15px}.quiz-why{grid-template-columns:1fr;min-height:0}.quiz-coach{order:2;height:175px}.quiz-feedback-copy{order:1;padding:20px 20px 4px}.quiz-verdict{font-size:20px}.quiz-coach-line{font-size:15px}.quiz-explanation{font-size:15px}.cta{padding:31px 20px}.cta h3{font-size:21px}.cta p{font-size:15px}.related{padding:23px 18px}.card-link{padding:22px 20px}h2.group{font-size:22px}
  .teacher-panel{min-height:0;padding:28px 20px 225px;background:linear-gradient(180deg,#fff 0 62%,#f2f5f8 62%)}.teacher-panel h2{font-size:23px}.teacher-panel p{font-size:15px}.teacher-image{right:50%;bottom:-8px;width:205px;transform:translateX(50%)}.diagram-panel{padding:24px 16px}.diagram-heading{gap:4px 10px}.diagram-heading h3{font-size:19px}.ai-concept-frame{width:min(100%,410px);max-height:min(72svh,620px)}.ai-concept-frame img{max-height:min(72svh,620px)}.ai-concept figcaption{grid-template-columns:1fr}.ai-concept figcaption>span{width:max-content}.ai-concept figcaption p{font-size:14px}.ai-concept-key{grid-template-columns:1fr 1fr}.ai-concept-key li:last-child{grid-column:1/3;border-color:#ffb89e;background:var(--orange-soft)}.visual-equation{grid-template-columns:1fr auto 1fr}.visual-equation>.visual-op:nth-of-type(2){grid-column:1/4;min-height:26px}.visual-equation .visual-node:last-child{grid-column:1/4}.visual-node{min-height:96px;padding:12px}.visual-node strong{font-size:25px}.recovery-flow,.decision-strip,.advantage-scale{align-items:stretch;flex-direction:column}.recovery-flow b{transform:rotate(90deg)}.compare-diagram,.ratio-diagram{grid-template-columns:1fr}.needs-ladder span:nth-child(1){width:52%}.needs-ladder span:nth-child(2){width:62%}.needs-ladder span:nth-child(3){width:72%}.needs-ladder span:nth-child(4){width:82%}.needs-ladder span:nth-child(5){width:92%}.diagram-note{flex-direction:column}.stage-flow,.vrio-flow{grid-template-columns:1fr}.stage-flow>i,.vrio-flow>i{min-height:22px;transform:rotate(90deg)}.stage-node,.vrio-node{min-height:118px}.timeline-diagram{grid-template-columns:1fr}.time-line,.time-future{grid-column:1}.time-now{min-height:110px}.exam-lens{grid-template-columns:1fr;padding:21px 18px}.exam-lens ol{grid-template-columns:1fr}.exam-lens li{min-height:70px}
  .unit-concept{border-radius:19px}.unit-concept-head{min-height:188px;padding:18px 102px 16px 16px;background:linear-gradient(110deg,#f5f8fc 0 70%,#edf2f8 70%)}.unit-concept-head::after{right:-50px;top:-73px;width:165px;height:165px;border-width:25px}.unit-concept h2{margin-top:9px;font-size:19px;line-height:1.34}.unit-concept-head p{font-size:12px;line-height:1.5}.unit-concept-head img{right:-7px;bottom:-5px;width:116px}.unit-concept-grid{grid-template-columns:1fr;gap:7px;padding:10px}.unit-concept-grid li>a{grid-template-columns:42px 1fr;gap:11px;min-height:76px;padding:10px 12px}.unit-concept-grid li b{width:42px;height:42px;border-radius:12px}.unit-concept-grid li strong{display:-webkit-box;overflow:hidden;margin:0 0 2px;font-size:14px;-webkit-box-orient:vertical;-webkit-line-clamp:2}.unit-concept-grid li p{display:-webkit-box;overflow:hidden;font-size:11px;line-height:1.5;-webkit-box-orient:vertical;-webkit-line-clamp:3}.review-hint{padding:0 12px 10px;font-size:10px;text-align:left}
  .semantic-matrix-wrap{grid-template-columns:28px 1fr;grid-template-rows:1fr 29px;gap:5px;padding:12px 10px}.semantic-y,.semantic-x{font-size:10px}.semantic-matrix{gap:7px}.semantic-cell{min-height:142px;padding:13px 10px 25px;border-radius:13px}.semantic-cell>b{font-size:16px}.semantic-cell>span{font-size:10px}.semantic-cell>small{margin-top:7px;font-size:10px}.semantic-cell>em,.force-node>em,.force-center>em,.compare-side>em,.semantic-stack a>em,.flow-node>em{right:7px;bottom:5px;font-size:10px}
  .force-map{grid-template-columns:1fr 1.2fr 1fr;grid-template-rows:92px 120px 92px;gap:8px;padding:12px 9px}.force-node,.force-center{padding:8px 5px 19px;border-radius:12px}.force-node b,.force-center b{font-size:12px;line-height:1.3}.force-center b{font-size:14px}.force-node span,.force-center span{font-size:10px}.force-node::after{font-size:17px}.force-node.is-top::after{bottom:-21px}.force-node.is-left::after{right:-17px}.force-node.is-right::after{left:-17px}.force-node.is-bottom::after{top:-22px}
  .semantic-flow{flex-direction:column;gap:2px;padding:8px 10px}.semantic-flow>i{min-height:9px;transform:rotate(90deg);font-size:14px;line-height:1}.flow-node{display:grid;grid-template-columns:34px 1fr;grid-template-rows:auto auto;min-height:61px;padding:6px 32px 6px 7px;text-align:left}.flow-node>b{grid-row:1/3;width:30px;height:30px;align-self:center}.flow-node>strong{align-self:end;margin:0;font-size:13px;line-height:1.25}.flow-node>span{align-self:start;margin:1px 0 0;font-size:10px;line-height:1.25}.semantic-flow .cycle-back{transform:none}
  .semantic-compare{grid-template-columns:1fr;gap:9px;padding:12px}.compare-side{min-height:152px;padding:20px 17px 25px;border-radius:14px}.compare-side>b{font-size:17px}.compare-side>strong{margin-top:8px;font-size:13px}.compare-side>span{margin-top:6px;font-size:10px}.semantic-compare>i{top:50%;width:38px;height:38px;font-size:9px}
  .semantic-stack{gap:6px;padding:12px}.semantic-stack>a{width:calc(100% - var(--level)*6%);min-height:70px;gap:8px;padding:11px 30px 11px 13px}.semantic-stack b{font-size:13px}.semantic-stack span{font-size:10px}
  .motivation-visual-head{min-height:225px;padding:24px 112px 22px 18px;background:linear-gradient(110deg,#f2fbf9 0 68%,#dff4ef 68%)}.motivation-visual h2{margin-top:11px;font-size:19px;line-height:1.42}.motivation-visual-head p{font-size:12px;line-height:1.65}.motivation-visual-head img{right:-7px;bottom:-5px;width:128px;transform:none}.motivation-steps{grid-template-columns:1fr;gap:3px;padding:10px}.motivation-steps>i{min-height:12px;transform:rotate(90deg);font-size:17px}.motivation-step{display:grid;grid-template-columns:42px 1fr;grid-template-rows:auto auto;min-height:76px;padding:10px 12px;text-align:left}.motivation-step>b{grid-row:1/3;align-self:center;justify-self:start}.motivation-step>strong{align-self:end;margin:0;font-size:15px}.motivation-step>span{align-self:start;font-size:10px}
  .knowledge-index .wrap{width:min(100% - 28px,1120px)}.knowledge-hero{grid-template-columns:1fr;gap:26px;margin-bottom:26px;padding:34px 24px;border-radius:21px}.knowledge-hero::before{top:-120px;right:-145px}.knowledge-hero-copy h1{font-size:clamp(32px,9vw,42px);line-height:1.32}.knowledge-hero-copy>p{font-size:15.5px;line-height:1.8}.knowledge-stats{grid-template-columns:repeat(4,1fr);gap:0;padding:8px}.knowledge-stats div{min-width:0;flex-direction:column-reverse;justify-content:center;gap:6px;padding:13px 4px;border-right:1px solid rgba(255,255,255,.12);border-bottom:0;text-align:center}.knowledge-stats div:last-child{border-right:0}.knowledge-stats strong{font-size:23px}.knowledge-stats span{font-size:8px;line-height:1.3}.section-title h2{font-size:25px}.route-section{margin:42px 0}.route-grid{grid-template-columns:1fr}.route-card{min-height:218px;padding:26px 24px}.route-card>b{left:24px;bottom:24px}.quick-start{margin-bottom:38px;padding:22px 18px}.quick-grid{grid-template-columns:1fr 1fr}.quick-grid a{min-height:136px;padding:15px}.quick-grid span{font-size:14px}.knowledge-toolbar{position:relative;top:auto;grid-template-columns:1fr;gap:12px;margin-bottom:32px;padding:15px}.knowledge-filters{display:grid;grid-template-columns:repeat(4,1fr)}.knowledge-filters button{padding:0 4px;font-size:10px}.knowledge-result{min-width:0;padding:0;text-align:left}.content-hub{margin-bottom:54px;scroll-margin-top:80px}.content-hub-head{grid-template-columns:auto 1fr;gap:14px}.hub-number{width:50px;height:50px;border-radius:14px;font-size:17px}.content-hub-head h2{font-size:23px;line-height:1.45}.content-hub-head p{font-size:13px}.content-hub-head>strong{display:none}.content-group{margin-top:18px;padding:21px 17px;border-radius:18px;scroll-margin-top:80px}.content-group-head{grid-template-columns:1fr;gap:6px}.content-group-head h3{font-size:20px}.content-group-head>b{display:none}.knowledge-grid{grid-template-columns:1fr}.knowledge-card{min-height:0;padding:20px}.knowledge-card h4{font-size:17px}.knowledge-conversion{align-items:flex-start;flex-direction:column;margin-top:50px;padding:30px 24px}.knowledge-conversion h2{font-size:23px}.knowledge-conversion>a{width:100%}
}
@media(max-width:700px){.semantic-hub{padding:10px}.insight-core{width:100%;min-height:76px;padding:10px 16px;border-radius:14px}.insight-core::after{bottom:-17px;height:17px}.insight-core>span{font-size:10px}.insight-core>b{font-size:17px}.insight-core>small{font-size:10px}.insight-spokes{grid-template-columns:1fr;gap:15px;margin-top:17px;padding-top:0}.insight-spokes::before{display:none}.insight-node{min-height:82px;align-items:flex-start;padding:9px 32px 9px 49px;text-align:left}.insight-node::before{content:"↓";left:18px;top:-18px;width:auto;height:auto;background:none;color:var(--orange);font-size:14px;font-weight:900}.insight-node>b{position:absolute;left:10px;top:50%;width:30px;height:30px;font-size:10px;transform:translateY(-50%)}.insight-node>strong{margin-top:0;font-size:13px;-webkit-line-clamp:2}.insight-node>span{font-size:10px;-webkit-line-clamp:2}.insight-node>em{right:7px;bottom:5px;font-size:10px}}
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