:root{--ink:#152238;--muted:#5e6b7d;--brand:#1c4ed8;--brand2:#0ea5a4;--bg:#f6f8fc;--card:#fff;--line:#dfe6ef;--warn:#fff6dd;--good:#eafaf3;--bad:#fff0f0;--shadow:0 18px 45px rgba(20,34,56,.08);--radius:22px;}
*{box-sizing:border-box} body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65} a{color:var(--brand);text-decoration:none} a:hover{text-decoration:underline}.wrap{width:min(1180px,92vw);margin:auto}.top{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}.logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:1.25rem;color:var(--ink)}.logo span{display:grid;place-items:center;width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff}.menu{display:flex;gap:18px;align-items:center;flex-wrap:wrap}.menu a{color:var(--ink);font-weight:700;font-size:.94rem}.cta{display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;border-radius:999px;background:var(--ink);color:#fff!important;font-weight:800}.hero{padding:70px 0 42px;background:radial-gradient(circle at 80% 0%,#d9f6ff 0,#f6f8fc 35%,#f6f8fc 100%)}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center}.eyebrow{display:inline-flex;gap:8px;align-items:center;background:#e9f0ff;color:#123ea3;border:1px solid #cbdafe;border-radius:999px;padding:8px 12px;font-weight:800;font-size:.86rem}.h1{font-size:clamp(2.35rem,5vw,4.8rem);line-height:1.03;letter-spacing:-.05em;margin:18px 0 18px}.lead{font-size:1.19rem;color:var(--muted);max-width:780px}.hero-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.search{display:flex;gap:10px;background:#fff;border:2px solid #cbdafe;border-radius:18px;padding:8px;margin:22px 0}.search input{flex:1;border:0;font-size:1.05rem;padding:12px;outline:none}.search button,.btn{border:0;border-radius:14px;padding:12px 16px;background:var(--brand);color:#fff;font-weight:900;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.btn.secondary{background:#fff;color:var(--ink);border:1px solid var(--line)}.btn.teal{background:var(--brand2)}.grid{display:grid;gap:20px}.cards-3{grid-template-columns:repeat(3,1fr)}.cards-4{grid-template-columns:repeat(4,1fr)}.cards-2{grid-template-columns:repeat(2,1fr)}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 10px 28px rgba(20,34,56,.04)}.card h3{margin-top:0;line-height:1.2}.section{padding:54px 0}.section h2{font-size:clamp(1.8rem,3vw,2.8rem);letter-spacing:-.035em;line-height:1.1;margin:0 0 12px}.kicker{color:var(--brand);font-weight:900;text-transform:uppercase;letter-spacing:.08em;font-size:.78rem}.muted{color:var(--muted)}.pill-list{display:flex;gap:10px;flex-wrap:wrap}.pill{border:1px solid var(--line);background:#fff;padding:8px 12px;border-radius:999px;font-weight:800;color:var(--ink)}.notice{background:var(--warn);border:1px solid #f2d68b;border-radius:18px;padding:18px}.good{background:var(--good);border-color:#b8ead3}.bad{background:var(--bad);border-color:#ffd0d0}.content{display:grid;grid-template-columns:minmax(0,760px) 320px;gap:36px;align-items:start}.article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}.article h1{font-size:clamp(2.1rem,4vw,3.6rem);line-height:1.07;letter-spacing:-.045em}.article h2{font-size:2rem;line-height:1.15;letter-spacing:-.03em;margin-top:42px}.article h3{font-size:1.35rem;margin-top:30px}.article p,.article li{font-size:1.03rem}.article blockquote{border-left:5px solid var(--brand);background:#f4f7ff;margin:24px 0;padding:18px;border-radius:0 16px 16px 0;color:#2e3b4c}.side{position:sticky;top:82px}.toc a{display:block;padding:9px 0;border-bottom:1px solid var(--line);font-weight:750;color:var(--ink)}.table{width:100%;border-collapse:collapse;background:#fff;border-radius:16px;overflow:hidden}.table th,.table td{border-bottom:1px solid var(--line);padding:13px;text-align:left;vertical-align:top}.table th{background:#eef4ff;font-size:.9rem}.checklist li{margin:10px 0}.toolbox{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}label{font-weight:800;display:block;margin:14px 0 6px}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:12px;font:inherit;background:#fff}textarea{min-height:110px}.output{margin-top:18px;padding:18px;border-radius:16px;background:#f3f7ff;border:1px solid #cddcff;white-space:pre-wrap}.footer{padding:42px 0;background:#101827;color:#d8e0ee;margin-top:60px}.footer a{color:#dbeafe}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}.badge{display:inline-block;padding:5px 9px;border-radius:999px;background:#edf5ff;border:1px solid var(--line);font-size:.78rem;font-weight:900;color:#24415c}.q{border:1px solid var(--line);border-radius:18px;padding:18px;background:#fff;margin:14px 0}.q strong{display:block}.mini{font-size:.92rem}.progress{height:12px;border-radius:999px;background:#e8eef7;overflow:hidden}.bar{height:100%;width:0;background:linear-gradient(90deg,var(--brand),var(--brand2))}.hero-stat{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:20px}.stat{background:#f8fbff;border:1px solid var(--line);border-radius:16px;padding:14px;text-align:center}.stat b{display:block;font-size:1.4rem}.print{display:none}@media(max-width:900px){.hero-grid,.content,.cards-3,.cards-4,.cards-2,.footer-grid{grid-template-columns:1fr}.side{position:static}.menu{display:none}.article{padding:22px}.hero{padding-top:42px}.hero-stat{grid-template-columns:1fr}}@media print{.top,.side,.footer,.btn,.search{display:none}.print{display:block}body{background:#fff}.article{box-shadow:none;border:0}.content{display:block}.wrap{width:100%}}

/* level two upgrades */
.callout{border:1px solid #cbdafe;background:#f4f7ff;border-radius:18px;padding:18px;margin:22px 0}.sponsor{margin-top:24px;border:1px solid #e2e8f0;background:#fff;border-radius:18px;padding:16px}.sponsor a{font-weight:900}.rubric{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:18px 0}.rubric div{border:1px solid var(--line);border-radius:16px;padding:14px;background:#fff}.timeline{border-left:4px solid var(--brand);padding-left:18px}.timeline h3{margin-bottom:4px}.planner-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.subject-row{display:grid;grid-template-columns:1.1fr .8fr .8fr .6fr;gap:10px;align-items:end;border-bottom:1px solid var(--line);padding:12px 0}.subject-row:last-child{border-bottom:0}.small-btn{padding:8px 12px;border-radius:12px}.plan-card{border:1px solid var(--line);background:#fff;border-radius:18px;padding:16px;margin:12px 0}.priority-high{border-left:6px solid #dc2626}.priority-med{border-left:6px solid #f59e0b}.priority-low{border-left:6px solid #0ea5a4}.week-block{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px;margin:14px 0}.week-block h3{margin-top:0}.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.deep-list li{margin-bottom:12px}.strategy-table td:first-child{font-weight:800}.resource-note{font-size:.92rem;color:var(--muted);border-top:1px solid var(--line);padding-top:12px;margin-top:16px}@media(max-width:900px){.planner-grid,.subject-row,.rubric,.check-grid{grid-template-columns:1fr}.subject-row{align-items:stretch}}

/* level three planner improvements */
.planner-pro .planner-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.day-grid{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}.day-grid label{display:inline-flex;align-items:center;gap:6px;margin:0;border:1px solid var(--line);border-radius:999px;padding:7px 10px;background:#fff;font-weight:800;font-size:.88rem}.day-grid input{width:auto}.subject-row-pro{grid-template-columns:1.2fr .85fr .8fr .72fr .72fr .9fr .55fr}.planner-actions{display:flex;gap:8px;flex-wrap:wrap}.plan-card-head{display:flex;justify-content:space-between;gap:12px;align-items:center}.split-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:14px 0}.split-grid div{border:1px solid var(--line);border-radius:14px;padding:12px;background:#f8fbff}.split-grid b{display:block;font-size:1.25rem}.split-grid span{font-size:.82rem;color:var(--muted);font-weight:800}.schedule-list{display:grid;gap:10px}.schedule-row{display:grid;grid-template-columns:150px 1fr;gap:14px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px}.schedule-row p{margin:.2rem 0 0}.notice ul{margin-bottom:0}@media(max-width:900px){.planner-pro .planner-grid,.subject-row-pro,.split-grid,.schedule-row{grid-template-columns:1fr}.plan-card-head{align-items:flex-start;flex-direction:column}}