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12px;line-height:1.55}.word-popover__close{background:var(--paper);cursor:pointer;border:0;border-radius:50%;width:28px;height:28px;font-weight:800}.vocab-panel{border:1px solid var(--line);background:var(--white);padding:24px;position:sticky;top:96px}@supports (color:color-mix(in lab, red, red)){.vocab-panel{background:color-mix(in srgb, var(--white) 80%, transparent)}}.vocab-panel{box-shadow:10px 12px #1746d114}.vocab-panel__top{justify-content:space-between;align-items:start;gap:18px;margin-bottom:20px;display:flex}.vocab-panel h2{letter-spacing:-.04em;margin:0;font-size:24px;line-height:1.05}.vocab-panel__hint{color:var(--muted);margin:8px 0 0;font-size:12px;line-height:1.55}.vocab-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;max-height:520px;padding-right:4px;display:grid;overflow:auto}.vocab-item{border:1px solid var(--line);background:var(--white);text-align:left;cursor:pointer;min-height:42px;padding:9px 10px}.vocab-item strong{font-family:var(--font-serif), Georgia, serif;font-size:16px;display:block}.vocab-item span{color:var(--muted);margin-top:5px;font-size:11px;line-height:1.45;display:none}.vocab-item[data-revealed=true] span{display:block}.sources{border-top:1px solid var(--line);font-family:var(--font-display), sans-serif;margin-top:64px;padding-top:26px}.sources h2{letter-spacing:-.02em;margin:0 0 16px;font-size:18px}.sources ol{color:var(--muted);margin:0;padding-left:22px;font-size:13px;line-height:1.7}.sources a{color:var(--cobalt);text-underline-offset:3px;text-decoration:underline}.reader-next{border-top:1px solid var(--line);padding:34px 0 88px}.reader-next__grid{grid-template-columns:1fr 1fr;gap:20px;display:grid}.reader-next a{border:1px solid var(--line);background:var(--white);padding:22px}.reader-next span{color:var(--muted);font-size:12px;font-weight:700;display:block}.reader-next strong{letter-spacing:-.035em;margin-top:8px;font-size:22px;display:block}.wordbook-layout,.coverage-layout{padding:38px 0 100px}.toolbar{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:24px;display:flex}.search-field{border:1px solid var(--line);background:var(--white);flex:260px;min-height:46px;padding:0 16px}.toolbar select{border:1px solid var(--line);background:var(--white);min-height:46px;padding:0 34px 0 14px}.wordbook-actions,.coverage-stats{flex-wrap:wrap;gap:10px;display:flex}.wordbook-actions button,.coverage-word button{min-height:44px;padding-inline:16px}.wordbook-list,.coverage-list{gap:12px;display:grid}.wordbook-row{border:1px solid var(--line);background:var(--white);grid-template-columns:minmax(140px,.35fr) 1fr auto;align-items:start;gap:22px;padding:22px;display:grid}.wordbook-row__word{font-family:var(--font-serif), Georgia, serif;font-size:30px;font-weight:700;line-height:1}.wordbook-row__phonetic{color:var(--muted);margin-top:7px;font-size:12px;display:block}.wordbook-row__body p{margin:0 0 12px;line-height:1.65}.wordbook-row__context{border-left:3px solid var(--acid);color:var(--muted);font-family:var(--font-serif), Georgia, serif;padding-left:12px;font-size:15px}.coverage-stats{margin-bottom:26px}.stat-block{border:1px solid var(--line);background:var(--white);flex:160px;min-height:116px;padding:18px}.stat-block strong{letter-spacing:-.05em;font-size:38px;line-height:1;display:block}.stat-block span{color:var(--muted);margin-top:10px;font-size:12px;font-weight:700;display:block}.coverage-word{border:1px solid var(--line);background:var(--white);grid-template-columns:minmax(140px,.7fr) minmax(260px,2fr) auto;align-items:center;gap:18px;padding:16px 18px;display:grid}.coverage-word__word strong{font-family:var(--font-serif), Georgia, serif;font-size:22px}.coverage-word__word span{color:var(--muted);margin-left:8px;font-size:11px}.coverage-word__meaning{color:var(--muted);font-size:13px;line-height:1.5}.coverage-word[data-covered=true]{border-left:5px solid var(--acid)}.coverage-word[data-covered=false]{border-left:5px solid var(--signal)}.coverage-link{color:var(--cobalt);text-underline-offset:3px;font-size:12px;font-weight:750;text-decoration:underline}.pagination{justify-content:center;align-items:center;gap:14px;margin-top:26px;display:flex}.pagination button{border:1px solid var(--line);background:var(--white);cursor:pointer;min-width:42px;min-height:42px}.toast-stack{z-index:100;gap:10px;display:grid;position:fixed;bottom:20px;right:20px}.toast{background:var(--ink);min-width:260px;max-width:min(420px,100vw - 40px);color:var(--white);box-shadow:var(--shadow);justify-content:space-between;align-items:center;gap:18px;padding:14px 16px;font-size:13px;display:flex}.toast button{color:var(--acid);cursor:pointer;background:0 0;border:0;border-bottom:1px solid;font-weight:800}.site-footer{border-top:1px solid var(--line);background:var(--ink);color:var(--white)}.site-footer__grid{grid-template-columns:1.1fr 1fr .8fr;gap:40px;padding:52px 0;display:grid}.site-footer p{color:#ffffff9e;margin:10px 0 0;font-size:13px;line-height:1.7}.footer-label{font-weight:800;color:var(--acid)!important;font-size:11px!important}.brand--footer .brand__en{color:var(--acid)}.site-footer__bottom{color:#ffffff80;border-top:1px solid #ffffff24;justify-content:space-between;padding:18px 0 24px;font-size:11px;display:flex}.not-found{text-align:center;place-items:center;min-height:62vh;padding:70px 20px;display:grid}.not-found h1{letter-spacing:-.09em;margin:0;font-size:clamp(70px,16vw,180px);line-height:.8}.not-found p{max-width:480px;color:var(--muted);margin:28px auto}@media (max-width:900px){.home-hero__grid,.featured-grid,.reader-grid,.site-footer__grid{grid-template-columns:1fr}.reader-grid{gap:36px}.vocab-panel{order:-1;position:static}.article-list{grid-template-columns:1fr}.coverage-word{grid-template-columns:1fr auto}.coverage-word__meaning{grid-area:2/1/auto/-1}.wordbook-row{grid-template-columns:1fr auto}.wordbook-row__body{grid-column:1/-1}}@media (max-width:640px){.shell,.reader-shell{width:min(100% - 28px,1180px)}.site-header__inner{align-items:flex-start;min-height:62px;padding:12px 0}.site-nav{flex-wrap:wrap;justify-content:flex-end;gap:2px}.site-nav a{padding:7px 8px;font-size:12px}.brand__cn{font-size:20px}.brand__en{display:none}.home-hero{padding-top:52px}.home-hero h1{font-size:50px}.progress-card{min-height:284px}.section{padding:54px 0}.section-heading{flex-direction:column;align-items:start}.article-card--featured{grid-template-columns:1fr}.reader-head{padding-top:38px}.reader-head h1{font-size:48px}.article-body{font-size:20px}.vocab-list,.reader-next__grid,.wordbook-row{grid-template-columns:1fr}.wordbook-row__word{font-size:27px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.mobile-bottom-safe{display:none}@media (max-width:640px){body{padding-bottom:76px}.site-header__inner{align-items:center;min-height:58px}.site-nav{z-index:70;padding:6px 8px calc(6px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--paper);grid-template-columns:repeat(3,1fr);gap:0;display:grid;position:fixed;inset:auto 0 0}@supports (color:color-mix(in lab, red, red)){.site-nav{background:color-mix(in srgb, var(--paper) 95%, transparent)}}.site-nav{-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.site-nav a{border-radius:10px;justify-content:center;padding:10px 4px;font-size:12px}.word-popover{border-radius:18px 18px 4px 4px;max-height:min(65vh,520px);bottom:82px;right:12px;overflow-y:auto;width:auto!important;top:auto!important;left:12px!important}.home-hero h1{font-size:clamp(40px,13vw,50px)}.reader-head h1{font-size:clamp(38px,11vw,48px)}.article-body{font-size:19px;line-height:1.68}.article-banner{aspect-ratio:16/11}.coverage-stats{grid-template-columns:1fr 1fr;display:grid}.stat-block:last-child{grid-column:1/-1}.toolbar select,.toolbar .wordbook-actions{width:100%}.wordbook-actions button{flex:1}}.catalogue-summary{border:1px solid var(--line);background:var(--white);grid-template-columns:auto minmax(180px,1fr);align-items:center;gap:24px;margin-bottom:20px;padding:18px 20px;display:grid}.catalogue-summary span{color:var(--muted);font-size:12px;font-weight:700;display:block}.catalogue-summary strong{letter-spacing:-.025em;margin-top:3px;font-size:24px;display:block}.catalogue-sections{gap:56px;display:grid}.catalogue-section__head{border-bottom:2px solid var(--ink);justify-content:space-between;align-items:baseline;gap:20px;padding-bottom:14px;display:flex}.catalogue-section__head h2{letter-spacing:-.03em;margin:0;font-size:clamp(30px,4vw,48px);line-height:1}.catalogue-section__head span{color:var(--muted);font-size:13px;font-weight:700}.catalogue-list{display:grid}.catalogue-item{border-bottom:1px solid var(--line);grid-template-columns:150px 58px minmax(0,1fr) auto;align-items:center;gap:22px;padding:22px 0;display:grid}.catalogue-item__cover{display:block}.catalogue-item__number{color:var(--cobalt);letter-spacing:-.02em;font-size:18px;font-weight:800}.catalogue-item__body h3{letter-spacing:-.025em;margin:8px 0 7px;font-size:clamp(22px,3vw,34px);line-height:1.08}.catalogue-item__body h3 a:hover{color:var(--cobalt)}.catalogue-item__body p{color:var(--muted);margin:0;font-size:14px;line-height:1.65}.read-toggle{cursor:pointer;color:var(--muted);white-space:nowrap;align-items:center;gap:8px;font-size:12px;font-weight:750;display:inline-flex}.read-toggle input{opacity:0;pointer-events:none;position:absolute}.read-toggle span{border:1px solid var(--line);background:var(--white);width:24px;height:24px;color:var(--ink);border-radius:50%;place-items:center;font-weight:900;display:inline-grid}.read-toggle input:checked+span{border-color:var(--cobalt);background:var(--cobalt);color:var(--white)}.read-toggle input:focus-visible+span{outline:3px solid var(--cobalt);outline-offset:3px}.read-toggle--compact b{display:none}@media (max-width:900px){.catalogue-item{grid-template-columns:110px 48px minmax(0,1fr) auto;gap:14px}}@media (max-width:640px){.catalogue-summary{grid-template-columns:1fr;gap:12px}.catalogue-sections{gap:40px}.catalogue-item{grid-template-columns:88px minmax(0,1fr) auto;gap:12px;padding:18px 0}.catalogue-item__cover{grid-row:1/3}.catalogue-item__number{grid-area:1/2;align-self:end;font-size:13px}.catalogue-item__body{grid-area:2/2/auto/4}.catalogue-item__body h3{margin-top:4px;font-size:20px}.catalogue-item__body p{display:none}.catalogue-item>.read-toggle{grid-area:1/3;justify-self:end}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}