:root{--bg:oklch(97.8% .006 240);--surface:oklch(100% 0 0);--well:oklch(94.5% .012 240);--ink:oklch(30% .055 245);--text:oklch(40% .035 245);--muted:oklch(55% .03 245);--border:oklch(86% .018 240);--accent:oklch(54% .105 42);--accent-soft:oklch(94% .03 42);--focus:oklch(65% .12 42);--danger:oklch(55% .16 25);--shadow:0 10px 30px oklch(30% .05 245/.08);--serif:"Noto Serif SC","Songti SC",SimSun,serif;--sans:Inter,"Noto Sans SC","Microsoft YaHei",sans-serif;--r-sm:8px;--r-md:12px;--r-lg:16px;--max:1200px;--fast:.15s;--normal:.25s}[data-theme=dark]{--bg:oklch(20% .025 245);--surface:oklch(25% .03 245);--well:oklch(29% .03 245);--ink:oklch(92% .015 240);--text:oklch(83% .018 240);--muted:oklch(68% .025 240);--border:oklch(37% .03 245);--accent:oklch(68% .11 42);--accent-soft:oklch(31% .05 42)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--text);font-family:var(--sans);margin:0;font-size:16px;line-height:1.55}button,input,select{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}svg{width:20px;height:20px}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--ink);font-family:var(--serif);line-height:1.25}h1{font-size:clamp(2rem,4vw,3rem)}h2{font-size:clamp(1.35rem,2.5vw,1.8rem)}:focus-visible{outline:3px solid var(--focus);outline-offset:3px}.sr-only{clip:rect(0,0,0,0);width:1px;height:1px;position:absolute;overflow:hidden}header{z-index:30;background:color-mix(in oklch,var(--surface) 96%,transparent);border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);position:sticky;top:0}.nav-shell{max-width:var(--max);justify-content:space-between;align-items:center;height:80px;margin:auto;padding:0 24px;display:flex}.brand{align-items:center;gap:12px;display:flex}.brand-logo{flex:0 0 48px;width:48px;height:48px}.brand-logo path{fill:none;stroke:var(--ink);stroke-width:2px}.brand-logo path:first-child{stroke:var(--accent)}.brand-logo circle{fill:var(--accent)}.brand b{font-family:var(--serif);color:var(--ink);font-size:24px;display:block}.brand small{color:var(--muted);font-size:11px;display:block}.nav-shell nav{gap:38px;height:100%;display:flex}.nav-shell nav a{place-items:center;font-size:14px;font-weight:600;display:grid;position:relative}.nav-shell nav a.active{color:var(--ink)}.nav-shell nav a.active:after{content:"";background:var(--accent);border-radius:3px;height:3px;position:absolute;bottom:9px;left:0;right:0}.icon-button{border:1px solid var(--border);border-radius:var(--r-md);background:var(--surface);width:44px;height:44px;color:var(--ink);place-items:center;display:grid}.menu-button,.mobile-nav{display:none}.page{max-width:var(--max);margin:auto;padding:48px 24px 96px}.page-intro{justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:36px;display:flex}.page-intro h1{margin-bottom:8px}.page-intro p{color:var(--muted);margin-bottom:0}.eyebrow,.article-meta{letter-spacing:.1em;text-transform:uppercase;color:var(--accent);font-size:12px;font-weight:700}.hero{padding:52px 0 72px;position:relative}.hero h1{letter-spacing:-.05em;max-width:850px;margin-bottom:24px;font-size:clamp(3rem,7vw,5.6rem)}.hero>p:not(.eyebrow){max-width:630px;font-size:18px}.signal{border:1px solid var(--border);border-left:0;border-radius:0 110px 110px 0;width:320px;height:210px;position:absolute;top:70px;right:0}.signal:after{content:"";border-top:1px solid var(--border);position:absolute;top:50%;left:0;right:0}.signal i{border:3px solid var(--bg);background:var(--accent);border-radius:50%;width:13px;height:13px;position:absolute;top:calc(50% - 6px)}.signal i:first-child{left:0}.signal i:nth-child(2){left:48%}.signal i:nth-child(3){right:0}section{margin-bottom:72px}.home-lead{border-bottom:1px solid var(--border);justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:20px;padding:4px 0 20px;display:flex}.home-lead h1{margin:5px 0 0;font-size:clamp(1.8rem,3vw,2.6rem)}.home-lead>p{max-width:560px;color:var(--muted);margin:0}.section-heading,.result-heading{justify-content:space-between;align-items:flex-end;margin-bottom:20px;display:flex}.section-heading h2,.result-heading h2{margin:0}.section-heading a,.section-heading span,.result-heading span{align-items:center;gap:6px;font-size:13px;font-weight:700;display:flex}.featured{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow);grid-template-columns:1.5fr .8fr;display:grid;overflow:hidden}.featured>div{padding:42px}.featured>div h2{font-size:clamp(1.6rem,3vw,2.35rem)}.featured aside{background:var(--well);padding:36px}.featured dl div{border-bottom:1px solid var(--border);padding:13px 0}dt{color:var(--ink);font-weight:700}dd{color:var(--muted);margin:5px 0 0}.button{border-radius:var(--r-md);background:var(--ink);min-height:44px;color:var(--surface);border:0;justify-content:center;align-items:center;gap:8px;padding:11px 18px;font-weight:700;display:inline-flex}.secondary-button{border:1px solid var(--border);border-radius:var(--r-md);background:var(--surface);min-height:44px;color:var(--ink);justify-content:center;align-items:center;gap:7px;padding:10px 16px;font-weight:700;display:inline-flex}.action-row{flex-wrap:wrap;gap:10px;margin-top:22px;display:flex}.featured-english,.english-primary,.detail-title-en{color:var(--ink);font-family:Georgia,Times New Roman,serif}.cn-translation,.detail-cn{color:var(--muted);margin-bottom:14px}.keyword-row{flex-wrap:wrap;gap:7px;margin:12px 0;display:flex}.preview-abstract{margin-top:20px}.preview-abstract p{margin-bottom:8px}.preview-abstract .clamped{-webkit-line-clamp:3;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.preview-abstract button{color:var(--accent);background:0 0;border:0;padding:0;font-weight:700}.question-grid{grid-template-columns:repeat(3,1fr);gap:16px;display:grid}.question-card,.journal-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);transition:transform var(--normal),box-shadow var(--normal);padding:24px}.question-card:hover,.journal-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}.question-card>span{color:var(--accent);font-family:var(--serif);font-size:25px}.question-card p,.journal-card p{color:var(--muted);margin-bottom:0;font-size:13px}.question-source{border-top:1px solid var(--border);padding-top:14px;margin-top:16px!important}.search-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);align-items:center;gap:10px;width:min(400px,100%);height:48px;padding:0 14px;display:flex}.search-box input{min-width:0;color:var(--ink);background:0 0;border:0;outline:0;flex:1}.search-box button{color:var(--muted);background:0 0;border:0;place-items:center;display:grid}.filter-bar,.journal-profile,.favorite-filters{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);justify-content:space-between;align-items:center;margin-bottom:28px;padding:16px 20px;display:flex}.filter-bar div,.pills,.filter-options{gap:8px;display:flex}.filter-bar button,.pills button,.filter-options button{min-height:40px;color:var(--text);background:var(--well);border:0;border-radius:999px;padding:9px 16px;font-weight:700}.filter-bar button.active,.pills button.active,.filter-options button.active{background:var(--ink);color:var(--surface)}.article-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);cursor:pointer;justify-content:space-between;align-items:center;gap:24px;margin-bottom:14px;padding:24px 26px;display:flex;position:relative}.article-card.recommended{border-left:5px solid var(--accent);box-shadow:var(--shadow)}.article-main{min-width:0}.article-card h3{margin:8px 0 7px;font-size:20px}.english-primary{margin:10px 0 6px;font-size:21px;font-weight:700;line-height:1.35}.authors{color:var(--muted);margin-bottom:5px;font-size:13px}.authors b{color:var(--text)}.article-actions{flex-shrink:0;align-items:center;gap:20px;display:flex}.favorite{border:1px solid var(--border);border-radius:var(--r-md);background:var(--surface);min-width:44px;height:44px;color:var(--ink);justify-content:center;align-items:center;gap:8px;padding:0 12px;display:flex}.favorite.saved{color:var(--accent);background:var(--accent-soft);border-color:color-mix(in oklch,var(--accent) 45%,var(--border))}.tags{flex-wrap:wrap;gap:7px;display:flex}.tag{background:var(--well);color:var(--text);border-radius:999px;padding:4px 10px;font-size:11px;font-weight:700}.tag.accent{color:var(--accent);background:var(--accent-soft)}.questions-list{gap:14px;display:grid}.wide-question{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);grid-template-columns:70px 1fr auto;align-items:center;gap:24px;padding:25px;display:grid}.wide-question .rank{font-family:var(--serif);color:var(--accent);font-size:30px}.wide-question h2{margin:6px 0}.wide-question p{color:var(--muted);margin:0}.directory-filter{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow);margin-bottom:36px;padding:24px}.directory-filter .eyebrow:not(:first-child){margin-top:24px}.filter-options button{border-radius:var(--r-md);text-align:left}.filter-options small{margin-top:2px;font-weight:400;display:block}.journal-grid{grid-template-columns:repeat(2,1fr);gap:16px;display:grid}.journal-card h3{margin:18px 0 4px;font-size:20px}.journal-card b{font-size:13px}.journal-card>span{color:var(--ink);margin-top:20px;font-size:13px;font-weight:700;display:block}.back{min-height:44px;color:var(--ink);background:0 0;border:0;align-items:center;gap:7px;margin-bottom:20px;font-weight:700;display:inline-flex}.detail-head{border-bottom:1px solid var(--border);justify-content:space-between;align-items:flex-end;gap:40px;padding-bottom:40px;display:flex}.detail-head h1{max-width:820px}.detail-title-en{margin:12px 0;font-size:clamp(2rem,4vw,3rem)}.detail-cn{font-family:var(--serif);font-size:18px}.detail-actions{flex-shrink:0;gap:10px;display:flex}.detail-grid{grid-template-columns:1fr 340px;gap:44px;margin-top:38px;display:grid}.research-question{background:var(--well);border-left:6px solid var(--accent);border-radius:var(--r-lg);margin-bottom:38px;padding:26px}.abstract{font-family:var(--serif);max-width:72ch;font-size:18px;line-height:1.8}.translation-note,.availability{color:var(--muted);font-size:12px}.attention-grid{grid-template-columns:repeat(2,1fr);gap:12px;display:grid}.attention-grid>div,.dossier{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);padding:20px}.attention-grid p{color:var(--muted);margin:7px 0 0;font-size:13px}.dossier{height:max-content;position:sticky;top:110px}.dossier dl{grid-template-columns:100px 1fr;gap:16px 10px;display:grid}.dossier dd{border-bottom:1px solid var(--border);overflow-wrap:anywhere;padding-bottom:12px}.favorite-filters{flex-wrap:wrap;justify-content:flex-start;gap:12px}.favorite-filters>span{margin-left:auto}.select{background:var(--well);border-radius:var(--r-md);min-width:180px;padding:5px 34px 5px 12px;position:relative}.select span{color:var(--muted);font-size:10px;display:block}.select select{width:100%;color:var(--ink);appearance:none;background:0 0;border:0;outline:0;font-weight:700}.select svg{position:absolute;top:14px;right:10px}.empty{text-align:center;background:var(--surface);border:1px dashed var(--border);border-radius:var(--r-lg);padding:88px 20px}.empty>svg{width:40px;height:40px;color:var(--accent)}.toast{z-index:50;border-radius:var(--r-md);background:var(--ink);min-width:250px;color:var(--surface);box-shadow:var(--shadow);justify-content:space-between;padding:16px 18px;display:flex;position:fixed;bottom:24px;right:24px}.toast button{color:var(--accent-soft);background:0 0;border:0;font-weight:700}@media (width<=900px){.nav-shell nav{display:none}.menu-button{display:grid}.mobile-nav{gap:4px;padding:8px 24px 20px;display:grid}.mobile-nav a{border-radius:8px;min-height:44px;padding:10px}.mobile-nav a.active{background:var(--well);color:var(--ink)}.signal{opacity:.25}.featured,.detail-grid,.question-grid,.journal-grid{grid-template-columns:1fr}.dossier{position:static}.page-intro,.detail-head{flex-direction:column;align-items:flex-start}.page-intro .search-box{width:100%}.detail-actions,.filter-options{flex-wrap:wrap}.wide-question{grid-template-columns:50px 1fr}.wide-question>span:last-child{display:none}}@media (width<=600px){.nav-shell{height:68px;padding:0 16px}.brand-logo{flex-basis:40px;width:40px;height:40px}.brand b{font-size:21px}.brand small{display:none}.page{padding:24px 16px 72px}.home-lead{flex-direction:column;align-items:flex-start;gap:8px}.home-lead>p{font-size:14px}.featured>div,.featured aside{padding:24px}.article-card{align-items:flex-start;padding:18px}.article-card h3,.english-primary{font-size:18px}.article-actions{gap:8px}.article-actions>svg,.tags .tag:nth-child(n+3){display:none}.filter-bar{flex-direction:column;align-items:flex-start;gap:14px}.filter-bar div{flex-wrap:wrap}.journal-profile{flex-direction:column;align-items:flex-start;gap:12px}.attention-grid{grid-template-columns:1fr}.wide-question{grid-template-columns:1fr;padding:18px}.wide-question .rank{font-size:20px}.detail-actions{width:100%}.detail-actions>*{flex:1}.favorite-filters{align-items:stretch}.select{width:100%}.favorite-filters>span{margin-left:0}.page-intro>.button{width:100%}.toast{bottom:16px;left:16px;right:16px}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}.question-paper{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);grid-template-columns:54px minmax(0,1fr) auto;align-items:start;gap:22px;padding:24px;display:grid}.question-paper .rank{font-family:var(--serif);color:var(--accent);font-size:24px}.question-paper-title{margin:5px 0 6px;font-family:Georgia,Times New Roman,serif;font-size:20px;line-height:1.35}.research-question-line{background:var(--well);border-left:3px solid var(--accent);margin:14px 0;padding:12px 14px;font-size:14px}.research-question-line b{color:var(--ink);margin-right:10px}.question-link{white-space:nowrap;margin-top:34px;font-size:13px;font-weight:700}.evidence-note{color:var(--muted);margin-bottom:6px;font-size:12px}.inline-citation{color:var(--accent);align-items:center;gap:4px;margin-top:7px;font-size:11px;font-weight:700;display:inline-flex}.inline-citation svg{width:13px;height:13px}.recent-heading>div>p:last-child{color:var(--muted);margin:5px 0 0;font-size:13px}.time-filter{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.time-filter button{border:1px solid var(--border);background:var(--surface);min-height:36px;color:var(--text);border-radius:999px;padding:7px 12px}.time-filter button.active{background:var(--ink);color:var(--surface)}.time-filter a{margin-left:8px;font-weight:700}.compact-empty{padding:42px 20px}.selected-journal-banner{z-index:20;padding:12px max(24px,calc((100vw - var(--max))/2 + 24px));background:var(--ink);color:var(--surface);box-shadow:var(--shadow);align-items:center;gap:14px;margin:-48px -24px 32px;display:flex;position:sticky;top:80px}.selected-journal-banner span{color:var(--accent-soft);font-size:11px}.selected-journal-banner strong{font-family:Georgia,Times New Roman,serif}.selected-journal-banner small{margin-left:auto}.article-filter{gap:14px}.community-buttons{flex-wrap:wrap}.journal-select{background:var(--well);border-radius:var(--r-md);min-width:250px;padding:5px 34px 5px 12px;position:relative}.journal-select span{color:var(--muted);font-size:10px;display:block}.journal-select select{width:100%;color:var(--ink);appearance:none;background:0 0;border:0;outline:0;font-weight:700}.journal-select svg{position:absolute;top:14px;right:10px}@media (width<=900px){.question-paper{grid-template-columns:40px minmax(0,1fr)}.question-link{display:none}.article-filter{flex-direction:column;align-items:stretch}.journal-select{width:100%}.selected-journal-banner{flex-wrap:wrap;top:68px}.selected-journal-banner small{margin-left:0}}@media (width<=600px){.question-paper{grid-template-columns:1fr;padding:18px}.question-paper .rank{font-size:18px}.time-filter{margin-top:10px}.recent-heading{flex-direction:column;align-items:flex-start}}.abstract-toolbar{justify-content:space-between;align-items:center;gap:12px;margin-bottom:9px;display:flex}.abstract-toolbar>div{gap:4px;display:flex}.abstract-toolbar button{border:1px solid var(--border);background:var(--surface);color:var(--muted);border-radius:999px;padding:5px 10px;font-size:11px}.abstract-toolbar button.active{background:var(--ink);color:var(--surface)}.abstract-toolbar button:disabled{opacity:.45;cursor:not-allowed}.bilingual-abstract .abstract-expand{color:var(--accent);background:0 0;border:0;border-radius:0;padding:0;font-size:13px}.abstract-missing{background:var(--well);color:var(--muted);padding:13px}.field-select{min-width:220px}.compact-detail .detail-head{align-items:center;gap:24px;padding-bottom:24px}.compact-detail .detail-title-en{margin:8px 0;font-size:clamp(1.65rem,3vw,2.35rem)}.compact-detail .detail-cn{margin-bottom:8px;font-size:14px}.compact-detail .authors,.compact-detail .keyword-row{margin-bottom:4px}.compact-detail .detail-grid{margin-top:28px}.compact-detail .research-question{margin-bottom:28px;padding:20px}.compact-detail .research-question h2{margin-bottom:0;font-size:1.35rem}.compact-detail .bilingual-abstract{margin-bottom:28px}.compact-detail .dossier h2{font-size:1.35rem}.journal-colored{border-left:5px solid oklch(58% .13 var(--journal-hue));background:linear-gradient(90deg,oklch(96% .025 var(--journal-hue)),var(--surface) 22%)}.journal-colored.recommended{border-left-color:oklch(58% .13 var(--journal-hue))}.journal-name{color:oklch(47% .14 var(--journal-hue));letter-spacing:0;text-transform:none;flex-wrap:wrap;align-items:center;gap:7px;display:flex}.journal-name strong{letter-spacing:.02em;font-family:Georgia,Times New Roman,serif;font-size:14px}.journal-name span{border-left:1px solid color-mix(in oklch,currentColor 38%,transparent);letter-spacing:.06em;text-transform:uppercase;padding-left:7px;font-size:11px}[data-theme=dark] .journal-colored{background:linear-gradient(90deg,oklch(30% .04 var(--journal-hue)),var(--surface) 24%)}.editorial-method{background:var(--ink);color:var(--surface);border-radius:var(--r-lg);justify-content:space-between;align-items:center;gap:28px;margin:-12px 0 28px;padding:18px 22px;display:flex}.editorial-method strong{font-family:var(--serif);font-size:18px}.editorial-method p{max-width:600px;color:color-mix(in oklch,var(--surface) 75%,transparent);margin:4px 0 0;font-size:12px}.editorial-method ul{flex-wrap:wrap;justify-content:flex-end;gap:7px;margin:0;padding:0;list-style:none;display:flex}.editorial-method li{border:1px solid color-mix(in oklch,var(--surface) 24%,transparent);border-radius:999px;padding:5px 9px;font-size:11px}.selection-reason{color:var(--muted);margin:0 0 12px;padding:0 14px;font-size:13px}.selection-reason b{color:var(--accent);margin-right:10px}.question-paper.journal-colored .rank,.question-paper.journal-colored .article-meta{color:oklch(47% .14 var(--journal-hue))}@media (width<=700px){.editorial-method{flex-direction:column;align-items:flex-start}.editorial-method ul{justify-content:flex-start}}.data-notice{background:var(--accent-soft);border:1px solid var(--border);border-radius:var(--r-md);color:var(--text);padding:12px 16px}.account-link{border:1px solid var(--border);border-radius:var(--r-md);align-items:center;gap:6px;max-width:110px;padding:8px 10px;font-size:12px;font-weight:700;display:flex}.account-link span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.account-link.active{background:var(--well)}footer{border-top:1px solid var(--border);background:var(--surface)}footer>div{max-width:var(--max);color:var(--muted);align-items:center;gap:24px;margin:auto;padding:24px;font-size:12px;display:flex}footer a{color:var(--text);font-weight:700}.account-card,.account-form,.status-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow)}.account-card{align-items:center;gap:18px;padding:28px;display:flex}.account-card>svg{width:36px;height:36px;color:var(--accent)}.account-card h2,.account-card p{margin:0}.account-card .secondary-button{margin-left:auto}.account-form{gap:18px;max-width:520px;padding:28px;display:grid}.account-form label span{margin-bottom:6px;font-size:12px;font-weight:700;display:block}.account-form input{border:1px solid var(--border);border-radius:var(--r-md);background:var(--bg);width:100%;height:46px;color:var(--ink);padding:0 13px}.account-form button:disabled{opacity:.55;cursor:wait}.text-button{color:var(--accent);background:0 0;border:0;font-weight:700}.form-message{border-radius:var(--r-sm);background:var(--well);margin:0;padding:10px 12px;font-size:13px}.status-summary{grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:24px;display:grid}.status-summary>div{background:var(--ink);color:var(--surface);border-radius:var(--r-lg);padding:22px}.status-summary b{font-family:var(--serif);font-size:26px;display:block}.status-summary span{color:color-mix(in oklch,var(--surface) 72%,transparent);font-size:12px}.status-panel{margin-bottom:20px;padding:26px}.status-panel h2{margin-bottom:20px}.coverage-grid{grid-template-columns:repeat(2,1fr);gap:14px;display:grid}.coverage-item{background:var(--well);border-radius:var(--r-md);grid-template-columns:1fr auto;gap:8px;padding:16px;display:grid}.coverage-item span{color:var(--muted);font-size:11px;display:block}.coverage-item strong{color:var(--ink);font-size:20px}.coverage-item progress{width:100%;height:6px;accent-color:var(--accent);grid-column:1/-1}.method-note,.status-warning{background:var(--accent-soft);border-radius:var(--r-md);padding:12px 14px;font-size:12px}.method-note{margin:18px 0 0}.method-list{grid-template-columns:repeat(2,1fr);gap:14px;display:grid}.method-list>div{border:1px solid var(--border);border-radius:var(--r-md);align-items:flex-start;gap:12px;padding:16px;display:flex}.method-list svg{color:var(--accent);flex:none}.method-list p,.method-list b,.method-list span{margin:0;display:block}.method-list span{color:var(--muted);margin-top:5px;font-size:12px}.source-links{flex-wrap:wrap;gap:16px;margin-top:20px;display:flex}.source-links a{align-items:center;gap:5px;font-size:12px;font-weight:700;display:flex}.source-links svg{width:14px;height:14px}@media (width<=900px){.account-link{display:none}}@media (width<=600px){footer>div{flex-direction:column;align-items:flex-start;gap:10px}.status-summary,.coverage-grid,.method-list{grid-template-columns:1fr}.account-card{flex-wrap:wrap;align-items:flex-start}.account-card .secondary-button{width:100%;margin-left:0}}