:root{
  --primary:#1E7A56; --primary-deep:#14523B; --soft:#E7F2EC; --ink:#22302A;
  --green:#16A34A; --border:#E1E7E2; --muted:#5A6B62;
  --a1:#16A34A; --a2:#0D9488; --b1:#CA8A04; --b2:#EA580C; --c1:#DC2626; --c2:#9333EA;
  --amber-bg:#FBF3DF; --amber-bd:#FCD34D; --amber-ink:#7A5E1C;
  --page-bg:#FAF9F5; --primary-tint-border:#BFE0CC; --tint-bg:#F3F8F5;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Noto Sans TC',sans-serif;color:var(--ink);background:var(--page-bg);line-height:1.65;padding:0 0 80px}
.en{font-family:'Atkinson Hyperlegible','Noto Sans TC',sans-serif}
main{max-width:720px;margin:0 auto;padding:0 16px}

/* header */
.site-header{max-width:960px;margin:0 auto;padding:16px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.site-header .brand{font-family:'Noto Serif TC',serif;font-weight:900;font-size:1.3rem;color:var(--primary-deep);text-decoration:none}
.header-search{position:relative;flex:1;min-width:200px;max-width:360px}
.header-search input{width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:10px;font-size:.92rem;font-family:inherit}
.search-dropdown{position:absolute;top:100%;left:0;right:0;background:#fff;border:1px solid var(--border);border-radius:10px;margin-top:4px;box-shadow:0 4px 16px rgba(34,48,42,.12);z-index:10;overflow:hidden}
.search-dropdown a{display:block;padding:8px 12px;text-decoration:none;color:var(--ink);font-size:.9rem;border-bottom:1px solid var(--border)}
.search-dropdown a:last-child{border-bottom:none}
.search-dropdown a:hover{background:var(--soft)}
.search-dropdown .sd-word{font-weight:700;font-family:'Atkinson Hyperlegible',sans-serif}
.search-dropdown .sd-gloss{color:var(--muted);margin-left:6px;font-size:.85rem}
.search-loading{padding:10px 12px;color:var(--muted);font-size:.86rem}
.site-nav a{color:var(--primary-deep);text-decoration:none;font-size:.92rem;font-weight:500}
.site-footer{max-width:720px;margin:40px auto 0;padding:16px;text-align:center;color:var(--muted);font-size:.82rem}

.card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:22px 26px;box-shadow:0 1px 3px rgba(34,48,42,.06);margin-bottom:14px}

/* 3 秒層 */
.hero .word-row{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px}
.wt-word{font-family:'Atkinson Hyperlegible',sans-serif;font-size:2.8rem;font-weight:700;line-height:1.1}
.audio-btn{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:50%;background:var(--soft);color:var(--primary-deep);font-size:1.1rem;border:none;cursor:pointer;flex:none}
.pron{color:var(--muted);font-size:.98rem}
.pron b{color:var(--primary-deep);font-weight:500}
.zh-big{font-size:1.45rem;font-weight:900;margin-top:4px}
.zh-big span{color:#CBD5E1;font-weight:400;margin:0 6px}
.whynow{margin-top:8px;font-size:.88rem;color:#475569}
.whynow b{color:var(--primary-deep)}
.level-badge{font-size:.78rem;font-weight:700;color:#fff;background:var(--primary);padding:3px 10px;border-radius:999px;align-self:center}
.entry-ordinal{font-size:1rem;color:var(--primary-deep);margin:26px 0 4px;font-weight:900}

/* 核心意象 */
.core{background:linear-gradient(135deg,var(--soft),var(--tint-bg));border:1.5px solid var(--primary-tint-border);text-align:center}
.core h2{font-size:1.35rem;font-weight:900}
.imgmap{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.imgmap .node{background:#fff;border:1px solid var(--primary-tint-border);border-radius:12px;padding:8px 10px;font-size:.88rem;flex:1;min-width:120px}
.imgmap .node b{display:block;font-size:.95rem}
.imgmap .node span{color:var(--muted);font-size:.8rem}

/* 哇時刻 */
.hook{background:var(--amber-bg);border:1.5px solid var(--amber-bd);color:var(--amber-ink);font-size:.98rem}
.hook .en{font-weight:700}

/* 金句 */
.signature{border-left:5px solid var(--primary-deep)}
.signature blockquote{font-family:'Atkinson Hyperlegible',sans-serif;font-size:1.22rem;font-weight:700;line-height:1.5}
.signature .zh{color:var(--muted);margin-top:4px;font-size:.95rem}

/* 義項 */
h3.sec{font-size:.95rem;color:var(--primary-deep);margin:22px 0 8px}
.sense{background:#fff;border:1px solid var(--border);border-radius:14px;padding:14px 18px;margin-bottom:8px}
.sense .head{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px}
.img-tag{font-size:.78rem;font-weight:700;color:var(--primary-deep);background:var(--soft);padding:2px 10px;border-radius:999px}
.lv{font-size:.7rem;font-weight:700;padding:1px 7px;border-radius:4px;color:#fff}
.pos{font-style:italic;color:var(--muted);font-size:.85rem}
.zh-gloss{font-weight:900;font-size:1.05rem}
.ex{margin-top:7px;padding:7px 12px;background:var(--tint-bg);border-radius:8px;font-size:.9rem}
.ex .zh{color:var(--muted);font-size:.84rem}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:7px}
.chip{font-size:.8rem;background:var(--soft);color:var(--primary-deep);padding:2px 10px;border-radius:999px}

/* 片語 */
.phrase{background:#fff;border:1px solid var(--border);border-radius:12px;padding:10px 16px;margin-bottom:6px;font-size:.94rem;display:flex;gap:10px;align-items:baseline;flex-wrap:wrap}
.phrase b{font-family:'Atkinson Hyperlegible',sans-serif;min-width:96px}
.phrase .pic{color:var(--muted);font-size:.85rem}

/* 自測 */
.selftest{background:#fff;border:1.5px dashed var(--primary-tint-border);border-radius:14px;padding:14px 18px;margin-bottom:8px}
.selftest .q{font-size:.98rem}
.selftest details{margin-top:6px}
.selftest summary{cursor:pointer;color:var(--primary-deep);font-size:.86rem}
.selftest .right{color:var(--green);font-weight:700}
.selftest .note{color:#475569;font-size:.88rem;margin-top:3px}

/* 字族 / 岔路 */
.family{font-size:.92rem;color:#334155;background:#fff;border:1px solid var(--border);border-radius:12px;padding:12px 16px}
.family b{font-family:'Atkinson Hyperlegible',sans-serif}
.next{display:block;background:#fff;border:1px solid var(--border);border-radius:12px;padding:11px 16px;margin-bottom:7px;font-size:.92rem;text-decoration:none;color:var(--ink);transition:all .18s}
.next:hover{border-color:var(--primary);background:var(--soft)}
.next b{font-family:'Atkinson Hyperlegible',sans-serif;color:var(--primary-deep)}
.next span{color:var(--muted)}
.next-plain{display:block;background:var(--tint-bg);border:1px solid var(--border);border-radius:12px;padding:11px 16px;margin-bottom:7px;font-size:.92rem;color:var(--muted)}
.next-plain b{font-family:'Atkinson Hyperlegible',sans-serif;color:var(--ink)}

.report-error{display:block;text-align:center;margin-top:18px}
.report-error summary{color:var(--muted);font-size:.82rem;text-decoration:underline;cursor:pointer;list-style:none}
.report-error summary::-webkit-details-marker{display:none}
.report-error-form{max-width:420px;margin:10px auto 0;display:flex;flex-direction:column;gap:8px;text-align:left}
.report-error-select{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:8px;font-size:.88rem;font-family:inherit;background:#fff;color:var(--ink)}
.report-error-textarea{width:100%;min-height:64px;padding:8px 10px;border:1px solid var(--border);border-radius:8px;font-size:.88rem;font-family:inherit;resize:vertical;color:var(--ink)}
.report-error-submit{align-self:flex-start;padding:7px 16px;border:none;border-radius:8px;background:var(--primary);color:#fff;font-size:.86rem;font-weight:500;cursor:pointer}
.report-error-submit:hover{background:var(--primary-deep)}

@media(max-width:640px){.card{padding:16px 18px}.wt-word{font-size:2.1rem}}

/* ---- home page ---- */
.hero-home{max-width:720px;margin:40px auto;padding:0 16px;text-align:center}
.hero-home h1{font-family:'Noto Serif TC',serif;font-size:2.2rem;font-weight:900;color:var(--primary-deep)}
.hero-home p{margin-top:10px;color:var(--muted);font-size:1.05rem}
.hero-stats{font-size:.88rem;color:var(--muted)}
.home-search{max-width:480px;margin:24px auto 0;position:relative}
.home-search input{width:100%;padding:14px 16px;border:1.5px solid var(--border);border-radius:14px;font-size:1rem;font-family:inherit}
.featured{max-width:720px;margin:32px auto;padding:0 16px}
.featured h2{font-size:1.1rem;color:var(--primary-deep);margin-bottom:12px;text-align:center}
.featured-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.featured-card{display:flex;flex-direction:column;gap:4px}
.featured-signature{font-size:.92rem;line-height:1.4}
.featured-signature-zh{font-size:.82rem;color:var(--muted)}
.browse-link{display:block;text-align:center;margin-top:24px}
.browse-link a{color:var(--primary-deep);font-weight:700;text-decoration:none}

/* ---- browse page ---- */
.browse-wrap{max-width:960px;margin:24px auto;padding:0 16px}
.browse-wrap h1{font-size:1.5rem;margin-bottom:16px}
.letter-group{margin-bottom:20px}
.letter-group h2{font-size:1.1rem;color:var(--primary-deep);border-bottom:2px solid var(--soft);padding-bottom:4px;margin-bottom:8px}
.word-grid{display:flex;flex-wrap:wrap;gap:8px}
.word-grid a{font-family:'Atkinson Hyperlegible',sans-serif;background:#fff;border:1px solid var(--border);border-radius:8px;padding:5px 10px;text-decoration:none;color:var(--ink);font-size:.9rem}
.word-grid a:hover{border-color:var(--primary);color:var(--primary-deep)}
.word-grid-gloss a{display:flex;flex-direction:column;gap:2px;padding:8px 12px}
.word-grid-gloss b{font-size:.92rem}
.word-grid-gloss span{font-family:'Noto Sans TC',sans-serif;color:var(--muted);font-size:.8rem}

/* level cards */
.level-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:20px 0}
.level-card{display:flex;flex-direction:column;align-items:center;gap:4px;background:#fff;border:1.5px solid var(--border);border-radius:14px;padding:22px 12px;text-decoration:none;color:var(--ink)}
.level-card:hover{border-color:var(--primary);background:var(--soft)}
.level-card-n{font-family:'Atkinson Hyperlegible',sans-serif;font-size:1.6rem;font-weight:900;color:var(--primary-deep)}
.level-card-count{color:var(--muted);font-size:.85rem}

/* ---- simple/standard tier word page (deliberately plain) ---- */
.tier-notice{max-width:720px;margin:0 auto;padding:8px 16px;font-size:.82rem;color:var(--primary-deep);background:var(--soft);border-bottom:1px solid var(--primary-tint-border);text-align:center}
.deep-tier-notice{max-width:none;margin:10px 0 0;border-radius:10px;border-bottom:none;text-align:left}
.simple-page main{padding-top:16px}
.simple-hero{border-bottom:1px solid var(--border);padding-bottom:14px}
.simple-hero .word-row{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px}
.simple-hero .wt-word{font-size:2.2rem}
.exam-badges{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.exam-badge{font-size:.76rem;font-weight:700;background:var(--primary);color:#fff;padding:2px 9px;border-radius:999px}
.simple-sense-list{display:flex;flex-direction:column;gap:2px}
.simple-sense{padding:14px 0;border-bottom:1px solid var(--border)}
.simple-sense:last-child{border-bottom:none}
.simple-sense .head{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px}
.simple-sense .def{margin-top:6px;font-size:.95rem;color:var(--ink)}
.simple-sense .ex{margin-top:6px;background:none;padding:0}
.simple-sense .ex .zh{margin-top:2px}

/* ---- TOEIC sidecar block (content/toeic, off by default) ---- */
.toeic-block{border-left:5px solid var(--primary)}
.toeic-note{color:var(--muted);font-size:.84rem;margin-top:-4px;margin-bottom:8px}
.toeic-sub{margin-top:18px}
.toeic-sub:first-of-type{margin-top:0}
.toeic-subhead{font-size:.86rem;font-weight:700;color:var(--primary-deep);margin:0 0 6px}
.toeic-example{background:var(--tint-bg);border-radius:8px;padding:8px 12px;margin-bottom:8px}
.toeic-example:last-child{margin-bottom:0}
.toeic-context{font-size:.76rem;font-weight:700;color:var(--primary-deep);background:var(--soft);padding:1px 8px;border-radius:999px}
.toeic-example .en{display:block;margin-top:5px}
.toeic-example .zh{color:var(--muted);font-size:.86rem;margin-top:2px}
.toeic-exercise-note{color:var(--muted);font-size:.84rem;margin:0 0 6px}
.toeic-question{margin:0 0 8px}
.toeic-options{list-style:none;margin:0 0 8px;padding:0;display:flex;flex-direction:column;gap:4px}
.toeic-options li{background:var(--tint-bg);border-radius:6px;padding:5px 10px;font-size:.92rem}
.toeic-quiz{margin-top:4px}
.toeic-quiz summary{cursor:pointer;color:var(--primary-deep);font-size:.86rem}
.toeic-quiz .right{color:var(--green);font-weight:700}
.toeic-quiz .note{color:var(--muted);font-size:.88rem;margin-top:3px}
.toeic-paraphrase{margin-bottom:8px}
.toeic-paraphrase:last-child{margin-bottom:0}
.toeic-paraphrase .en{display:block}
.toeic-paraphrase .zh{color:var(--muted);font-size:.86rem;margin-top:2px}