:root{--paper: #f7f4ed;--paper-soft: #fbf9f4;--ink: #151515;--ink-soft: #343434;--muted: #77746d;--line: #cfc8ba;--line-dark: #222222;--blue: #42699e;--blue-soft: #6f94c7;--blue-pale: #dce8f4;--serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;--sans: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;--max: 1450px}*{box-sizing:border-box}html{background:var(--paper);color:var(--ink);font-family:var(--sans);text-rendering:optimizeLegibility}body{margin:0;min-width:320px;background:radial-gradient(circle at 18% 12%,rgb(255 255 255 / 55%),transparent 26rem),linear-gradient(90deg,rgb(66 105 158 / .015) 1px,transparent 1px),linear-gradient(var(--paper),var(--paper));background-size:auto,36px 36px,auto}a{color:inherit;text-decoration:none}a:hover{color:var(--blue)}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--blue);outline-offset:4px}button,input{font:inherit}.page-shell{width:min(calc(100% - 56px),var(--max));margin:0 auto;padding:46px 0 32px}.site-header{display:grid;grid-template-columns:minmax(260px,420px) 1fr;gap:48px;align-items:center}.brand{display:inline-flex;align-items:center;gap:16px;width:fit-content}.brand strong{display:block;font-family:var(--serif);font-size:clamp(2rem,3.4vw,3.15rem);font-weight:700;letter-spacing:.08em;line-height:1}.brand small{display:block;margin-top:12px;color:var(--muted);font-family:var(--serif);font-size:clamp(.9rem,1.4vw,1.14rem);letter-spacing:.24em}.brand img{width:68px;transform:translateY(-8px)}.main-nav{display:flex;justify-content:flex-end;align-items:center;gap:clamp(26px,4vw,74px);overflow-x:auto;padding:10px 0;white-space:nowrap;font-family:var(--serif);font-size:clamp(1.05rem,1.5vw,1.45rem);font-weight:700;scrollbar-width:none}.main-nav::-webkit-scrollbar{display:none}.search-link{display:inline-flex;align-items:center;gap:10px;font-size:clamp(.96rem,1.2vw,1.1rem)}.search-icon{display:inline-block;width:25px;height:25px;border:2px solid currentColor;border-radius:50%;position:relative}.search-icon:after{content:"";position:absolute;width:10px;height:2px;right:-7px;bottom:0;background:currentColor;transform:rotate(45deg);transform-origin:center}.drawn-divider{height:18px;margin:24px 0 28px;background:url(/assets/line-divider.svg) center / 100% 100% no-repeat}.home-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(390px,.95fr);gap:0;border-bottom:1px solid var(--line);min-height:458px}.hero-article{position:relative;padding:30px 60px 32px 36px;border-right:1.4px solid var(--line-dark);overflow:hidden}.category-label{display:inline-block;color:var(--blue);font-family:var(--serif);font-size:1.08rem;font-weight:700;letter-spacing:.12em;padding-bottom:5px;border-bottom:2px solid var(--blue)}.hero-article h1,.article-header h1,.text-page h1,.listing-page h1,.archive-page h1,.not-found h1{font-family:var(--serif);color:var(--ink);font-weight:800}.hero-article h1{max-width:920px;margin:24px 0 18px;font-size:clamp(2.85rem,3.65vw,3.65rem);line-height:1.16;letter-spacing:.01em}.article-meta{display:flex;flex-wrap:wrap;gap:9px 16px;color:var(--muted);font-size:1rem;line-height:1.6}.article-meta span:not(:last-child):after{content:"·";margin-left:16px;color:var(--line-dark);opacity:.45}.article-meta--detail{justify-content:center}.hero-summary{max-width:710px;margin:18px 0 22px;color:var(--ink-soft);font-family:var(--serif);font-size:clamp(1.1rem,1.35vw,1.32rem);line-height:2}.text-link{display:inline-flex;align-items:center;gap:10px;color:var(--blue);font-family:var(--serif);font-weight:700}.hero-ripple{position:absolute;right:56px;bottom:34px;width:190px;opacity:.9}.hot-list{position:relative;margin-left:-1px;padding:30px 36px 22px 42px;border:1.4px solid var(--line-dark);border-top:0;border-bottom:0;align-self:end;min-height:452px}.hot-list__header{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-bottom:16px}.hot-list h2{margin:0;font-family:var(--serif);font-size:2rem}.hot-list h2:after{content:"";display:block;width:64px;margin-top:5px;border-bottom:2px solid var(--blue)}.hot-list__header a{color:var(--blue);font-family:var(--serif);font-weight:700}.hot-list ol{list-style:none;margin:0;padding:0}.hot-list li{display:grid;grid-template-columns:34px minmax(0,1fr) auto;gap:14px;align-items:baseline;padding:7px 0;font-family:var(--serif);font-size:clamp(1.02rem,1.25vw,1.18rem)}.hot-rank{color:var(--blue);font-size:1.3rem}.hot-list small{color:var(--muted);font-family:var(--sans);font-size:.92rem;white-space:nowrap}.secondary-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}.letter-shelf{margin-top:30px;padding:30px 34px;border:1px solid var(--line);background:#ffffff1f}.letter-shelf__header{display:flex;align-items:flex-end;justify-content:space-between;gap:24px}.letter-shelf__header h2{margin:0;font-family:var(--serif);font-size:clamp(1.8rem,2.5vw,2.5rem)}.letter-shelf__header>a{color:var(--blue);font-family:var(--serif);font-weight:700}.letter-shelf ol{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin:24px 0 20px;padding:22px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);list-style:none}.letter-shelf li{display:grid;gap:9px;font-family:var(--serif);font-size:1.18rem;line-height:1.65}.letter-shelf time,.letter-shelf__empty{color:var(--muted);font-family:var(--sans);font-size:.9rem}.letter-shelf__empty{margin:22px 0;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.article-card{min-height:286px;padding:24px;border:1px solid var(--line);border-radius:3px 2px 4px;background:#ffffff29;box-shadow:0 0 0 1px #ffffff2e inset}.article-card h3{margin:24px 0 16px;font-family:var(--serif);font-size:clamp(1.55rem,2.2vw,2.05rem);line-height:1.35}.card-date,.article-card p{color:var(--muted);line-height:1.8}.article-card p:not(.card-date){min-height:76px;color:var(--ink-soft)}.article-page{max-width:920px;margin:0 auto}.back-link{color:var(--blue);font-family:var(--serif);font-weight:700}.article-header{margin:34px 0 42px;text-align:center;padding-bottom:34px;border-bottom:1px solid var(--line)}.article-header h1{margin:28px auto 22px;max-width:880px;font-size:clamp(2.6rem,5vw,5rem);line-height:1.14}.article-header>p:last-child{max-width:680px;margin:22px auto 0;color:var(--ink-soft);font-family:var(--serif);font-size:1.18rem;line-height:1.9}.article-body{max-width:760px;margin:0 auto;font-family:var(--serif);font-size:clamp(1.13rem,1.6vw,1.28rem);line-height:2.08}.article-body p{margin:0 0 1.45em}.self-comments,.related-news,.letter-entry{max-width:760px;margin:64px auto 0;padding-top:30px;border-top:1px solid var(--line)}.self-comments h2,.related-news h2,.letter-entry h2{margin:0 0 24px;font-family:var(--serif);font-size:1.8rem}.self-comments ol{display:grid;gap:18px;margin:0;padding:0;list-style:none}.self-comments li{padding:18px 20px;border-left:3px solid var(--blue-pale);background:#ffffff2e}.comment-meta{display:flex;flex-wrap:wrap;gap:12px;margin:0 0 8px;color:var(--muted);font-size:.95rem}.comment-meta strong{color:var(--ink)}.self-comments li>p:last-child,.letter-entry p{margin:0;color:var(--ink-soft);line-height:1.9}.related-news ul{list-style:none;margin:0;padding:0}.related-news li{display:flex;justify-content:space-between;gap:20px;padding:14px 0;border-bottom:1px solid var(--line)}.related-news span{color:var(--muted);white-space:nowrap}.letter-entry{padding-bottom:24px}.letter-entry .text-link{margin-top:18px}.listing-page,.archive-page,.text-page,.not-found{max-width:920px;margin:0 auto;padding:34px 0 40px}.section-note{margin:0 0 12px;color:var(--blue);font-family:var(--serif);font-weight:700;letter-spacing:.18em}.listing-page h1,.archive-page h1,.text-page h1,.not-found h1{margin:0 0 28px;font-size:clamp(2.4rem,4vw,4.5rem);line-height:1.18}.listing-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.quiet-state{margin-top:30px;padding:34px;border:1px solid var(--line);text-align:center;color:var(--muted)}.quiet-state img,.not-found img{width:74px;margin-bottom:12px}.archive-page ol{list-style:none;margin:0;padding:0}.archive-page li{display:grid;grid-template-columns:130px 70px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}.archive-page time,.archive-page span{color:var(--muted)}.text-page p{max-width:none;color:var(--ink-soft);font-family:var(--serif);font-size:1.18rem;line-height:2}.search-preview{display:grid;grid-template-columns:1fr auto;gap:12px;max-width:640px;margin-top:30px}.search-preview label{grid-column:1 / -1;color:var(--muted)}.search-preview input,.search-preview button{border:1px solid var(--line);background:var(--paper-soft);color:var(--muted);padding:13px 16px}.search-page,.letter-page,.letter-success,.published-letters,.published-letter{max-width:920px;margin:0 auto;padding:34px 0 40px}.search-page h1,.letter-page h1,.letter-success h1,.published-letters h1,.published-letter h1{margin:0 0 28px;font-family:var(--serif);font-size:clamp(2.4rem,4vw,4.5rem);line-height:1.18}.published-letters__intro{max-width:720px;color:var(--ink-soft);font-family:var(--serif);font-size:1.12rem;line-height:1.9}.published-letters>ol{margin:38px 0 0;padding:0;border-top:1px solid var(--line);list-style:none}.published-letters>ol li{display:grid;grid-template-columns:130px minmax(0,1fr) auto;gap:24px;align-items:baseline;padding:24px 0;border-bottom:1px solid var(--line)}.published-letters time,.published-letter header>p:last-child{color:var(--muted)}.published-letters h2{margin:0;font-family:var(--serif);font-size:1.45rem;line-height:1.55}.published-letters__write{margin-top:42px;padding-top:24px;border-top:1px solid var(--line)}.published-letter header{margin:38px 0 42px;padding-bottom:30px;border-bottom:1px solid var(--line)}.published-letter header h1{max-width:820px}.search-form{margin:30px 0 22px}.search-form>label{display:block;margin-bottom:10px;color:var(--muted)}.search-form>div{display:grid;grid-template-columns:1fr auto}.search-form input,.search-form button,.archive-controls select{min-height:48px;border:1px solid var(--line);background:var(--paper-soft);color:var(--ink);padding:12px 16px;font:inherit}.search-form button{min-width:100px;border-left:0;color:var(--blue);cursor:pointer}.search-summary{margin:0;font-family:var(--serif);font-size:1.25rem}.search-statistics{margin:10px 0 30px;color:var(--muted);line-height:1.8}.search-results{border-top:1px solid var(--line)}.search-result{padding:24px 0;border-bottom:1px solid var(--line)}.search-result__meta{margin:0 0 10px;color:var(--blue);font-size:.92rem}.search-result h2{margin:0 0 10px;font-family:var(--serif);font-size:1.7rem;line-height:1.45}.search-result>p:last-child{margin:0;color:var(--ink-soft);line-height:1.8}.archive-controls{display:grid;grid-template-columns:minmax(180px,240px) 1fr auto;gap:24px;align-items:end;margin:0 0 38px;padding:20px;border:1px solid var(--line)}.archive-controls label:not(.archive-checkbox){display:grid;gap:8px;color:var(--muted)}.archive-checkbox{display:flex;align-items:center;gap:10px;min-height:48px}.archive-checkbox input{width:18px;height:18px;accent-color:var(--blue)}.archive-controls p{margin:0;color:var(--muted);white-space:nowrap}.archive-groups{display:grid;gap:42px}.archive-group h2{margin:0 0 10px;color:var(--blue);font-family:var(--serif);font-size:1.65rem}.letter-intro{max-width:760px;color:var(--ink-soft);font-family:var(--serif);font-size:1.12rem;line-height:1.9}.letter-form{display:grid;gap:22px;margin-top:34px;padding:30px;border:1px solid var(--line);background:#ffffff29}.letter-form>label:not(.letter-checkbox){display:grid;gap:9px}.letter-form small{color:var(--muted);font-weight:400}.letter-form strong{color:var(--blue);font-size:.88em}.letter-form input[type=text],.letter-form textarea{width:100%;border:1px solid var(--line);background:var(--paper-soft);color:var(--ink);padding:13px 15px;font:inherit;line-height:1.7}.letter-form textarea{resize:vertical}.letter-form fieldset{margin:0;padding:18px 20px;border:1px solid var(--line)}.letter-form legend{padding:0 8px;color:var(--muted)}.letter-field-note{margin:0 0 16px;color:var(--muted);font-size:.94rem;line-height:1.75}.letter-checkbox{display:flex;align-items:flex-start;gap:11px;line-height:1.7}.letter-checkbox+.letter-checkbox{margin-top:12px}.letter-checkbox input{width:18px;height:18px;margin-top:4px;flex:0 0 auto;accent-color:var(--blue)}.letter-confirm{padding-top:4px}.letter-form button{width:fit-content;min-width:150px;min-height:48px;border:1px solid var(--blue);background:transparent;color:var(--blue);font:inherit;cursor:pointer}.letter-form-note{display:flex;align-items:center;gap:12px;margin:-6px 0 0;color:var(--muted);font-size:.9rem;line-height:1.7}.letter-form-note img{width:42px;flex:0 0 auto;opacity:.82}.letter-form-note p{margin:0}.honeypot{position:absolute;left:-9999px}.letter-success{text-align:center}.letter-success>img{width:84px;margin-bottom:18px}.letter-success>p:not(.section-note){max-width:620px;margin:0 auto 24px;color:var(--ink-soft);line-height:1.9}.not-found{text-align:center}.site-footer{margin-top:44px;padding-top:28px;text-align:center;color:var(--muted)}.footer-ripple{height:42px;margin-bottom:12px;background:url(/assets/ripple.svg) center / 170px auto no-repeat}.site-footer nav{display:flex;justify-content:center;gap:28px;flex-wrap:wrap;font-family:var(--serif)}.site-footer p{margin:12px 0 0;font-size:.92rem}.fish-cursor,.cursor-ripple{display:none}.has-fish-cursor,.has-fish-cursor body,.has-fish-cursor a,.has-fish-cursor button{cursor:none}.has-fish-cursor input,.has-fish-cursor textarea,.has-fish-cursor select,.has-fish-cursor [contenteditable=true]{cursor:text}.has-fish-cursor .fish-cursor{display:block;position:fixed;left:0;top:0;z-index:9999;width:42px;height:24px;pointer-events:none;opacity:0;transition:opacity .16s ease,filter .16s ease;will-change:transform}.fish-cursor img{width:100%;height:auto}.fish-cursor.is-ready{opacity:1}.fish-cursor.is-link{filter:saturate(1.25) contrast(1.1)}.fish-cursor.is-input{opacity:0}.has-fish-cursor .cursor-ripple{display:block;position:fixed;width:58px;height:28px;margin-left:-29px;margin-top:-14px;border:1px solid var(--blue-soft);border-radius:50%;pointer-events:none;opacity:0;transform:scale(.45);z-index:9998}.cursor-ripple.is-visible{animation:ripple-click .52s ease-out}[data-fish-unit],.fish-glyph{display:inline-block;transform:translateZ(0) rotate(0);transform-origin:center;will-change:transform,opacity,color}[data-fish-unit][data-fish-weight=body]{display:block}.fish-space{display:inline;white-space:pre}.fish-text-group{display:inline}.production-swim-fish{position:fixed;left:0;top:0;z-index:10002;width:56px;height:32px;pointer-events:none;opacity:0;transform:translate3d(-100px,-100px,0);transition:opacity .16s ease,filter .16s ease;will-change:transform}.production-swim-fish svg{width:100%;overflow:visible}.production-swim-fish path{stroke:var(--blue);stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round}.production-swim-fish circle{fill:var(--blue)}.production-swim-fish.is-visible{opacity:1}.production-swim-fish.is-swimming{filter:saturate(1.15)}.production-swim-fish.is-swimming .production-fish-tail{transform-origin:18px 16px;animation:production-tail-swim var(--tail-speed, .19s) ease-in-out infinite alternate}.production-swim-ripple{position:fixed;z-index:10000;width:74px;height:30px;margin:-15px 0 0 -37px;border:1px solid var(--blue-soft);border-radius:50%;pointer-events:none;opacity:0;transform:scale(.35)}.production-swim-ripple.is-visible{animation:production-swim-ripple .54s ease-out}.production-particle-layer{position:fixed;inset:0;z-index:10001;overflow:hidden;pointer-events:none}.production-particle-layer .swim-particle{position:absolute;width:var(--particle-size, 4px);height:var(--particle-size, 4px);border:1px solid var(--blue-soft);border-radius:50%;opacity:0;animation:production-particle-drift .62s ease-out forwards}.production-swim-tip{position:fixed;left:50%;bottom:28px;z-index:10003;max-width:calc(100% - 32px);padding:11px 16px;border:1px solid var(--blue-soft);background:#f7f4edf0;color:var(--blue);box-shadow:0 8px 32px #1e30451a;opacity:0;transform:translate(-50%,12px);pointer-events:none;transition:opacity .22s ease,transform .22s ease}.production-swim-tip.is-visible{opacity:1;transform:translate(-50%)}.fish-swim-active,.fish-swim-active body,.fish-swim-active a{cursor:none;user-select:none}.fish-swim-active .fish-cursor{opacity:0}.fish-swim-active input,.fish-swim-active textarea,.fish-swim-active select,.fish-swim-active button{cursor:auto}.fish-swim-transition .page-shell{opacity:.72;filter:blur(1.2px);transition:opacity .46s ease,filter .46s ease}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@keyframes ripple-click{0%{opacity:.7;transform:scale(.35)}to{opacity:0;transform:scale(1.35)}}@keyframes production-tail-swim{0%{transform:rotate(-9deg)}to{transform:rotate(9deg)}}@keyframes production-swim-ripple{0%{opacity:.62;transform:scale(.35)}to{opacity:0;transform:scale(1.5)}}@keyframes production-particle-drift{0%{opacity:0;transform:translateZ(0) scale(.7)}24%{opacity:.72}to{opacity:0;transform:translate3d(var(--particle-x, 10px),var(--particle-y, -20px),0) scale(1.1)}}@media(max-width:980px){.page-shell{width:min(calc(100% - 32px),var(--max));padding-top:26px}.site-header{display:block}.brand img{width:58px}.main-nav{justify-content:flex-start;gap:28px;margin-top:20px;padding-bottom:14px;font-size:1.08rem}.home-grid{display:block;border-bottom:0;min-height:0}.hero-article{padding:30px 0 38px;border-right:0;border-bottom:1px solid var(--line)}.hero-article h1{font-size:clamp(2.45rem,10vw,4.2rem)}.hero-ripple{position:static;display:block;width:150px;margin:12px 0 0 auto}.hot-list{margin:30px 0 0;padding:24px 18px 18px;border:1px solid var(--line-dark);min-height:0}.hot-list li{grid-template-columns:30px minmax(0,1fr)}.hot-list small{grid-column:2}.secondary-grid,.listing-grid,.letter-shelf ol{grid-template-columns:1fr}.letter-shelf{padding:24px 20px}.letter-shelf__header{align-items:flex-start}.article-card{min-height:0}.article-page,.listing-page,.archive-page,.text-page,.not-found{max-width:100%}.article-header{text-align:left}.article-meta--detail{justify-content:flex-start}.article-body{font-size:1.12rem;line-height:2}.related-news li{display:block}.related-news span{display:block;margin-top:6px}.archive-page li{grid-template-columns:1fr;gap:6px}.search-preview{grid-template-columns:1fr}.search-page,.letter-page,.letter-success,.published-letters,.published-letter{max-width:100%}.published-letters>ol li{grid-template-columns:1fr;gap:8px}.archive-controls{grid-template-columns:1fr;gap:14px}.archive-controls p{white-space:normal}.letter-form{padding:22px 18px}}@media(hover:none),(pointer:coarse){.production-swim-runtime{display:none}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.001ms!important}.production-swim-runtime{display:none}[data-fish-unit],.fish-glyph{transform:none!important;opacity:1!important;color:inherit!important}}