:root{color-scheme:light;--paper:#fafbf8;--ink:#192f28;--green:#164c3e;--muted:#65716b;--line:#dce2db;--lime:#c3ee8e;--serif:"Songti SC","STSong","Noto Serif CJK SC",SimSun,serif;--sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:2rem}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
::selection{background:var(--lime);color:var(--green)}
a{color:inherit;text-decoration:none}
a:focus-visible{outline:3px solid var(--green);outline-offset:6px;border-radius:3px}
.site-shell{max-width:1280px;margin:0 auto;padding:0 64px}
.skip-link{position:fixed;top:-100px;left:20px;z-index:10;background:var(--green);color:white;padding:12px 20px}
.skip-link:focus{top:12px}
.site-header{min-height:108px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}
.brand{display:inline-flex;align-items:center;gap:12px;font-weight:650;font-size:1.125rem;letter-spacing:.08em;white-space:nowrap}
.brand-mark{display:grid;place-items:center;background:var(--green);color:var(--lime);width:38px;height:38px;border-radius:11px;font:2.1rem Georgia,serif;line-height:1}
nav{display:flex;gap:32px;font-size:.875rem}nav a{padding:10px 0}nav a:hover,nav a[aria-current]{color:var(--green);text-decoration:underline;text-underline-offset:7px}
.hero{display:grid;grid-template-columns:1.1fr 1fr;align-items:center;gap:56px;padding:88px 0 94px}
.eyebrow{font-size:.75rem;font-weight:600;letter-spacing:.13em;color:var(--muted);margin:0 0 24px;display:flex;align-items:center;gap:9px}
.tiny-dot{width:7px;height:7px;display:inline-block;border-radius:50%;background:var(--green)}
h1,h2,h3,p{margin-top:0}h1,h2,h3{font-weight:500}
.hero h1{font:500 clamp(2.8rem,4.5vw,4.15rem)/1.35 var(--serif);letter-spacing:.035em;margin:0 0 26px}
.accent-word{color:var(--green);position:relative;white-space:nowrap;background:linear-gradient(transparent 77%,var(--lime) 77%,var(--lime) 92%,transparent 92%)}
.hero-description{color:var(--muted);line-height:1.95;margin-bottom:30px}
.primary-link{display:inline-flex;align-items:center;justify-content:space-between;gap:36px;background:var(--green);color:#fff;padding:13px 21px;border-radius:5px;font-size:.875rem;font-weight:500;transition:background .2s,transform .2s}
.primary-link:hover{background:#24624f;transform:translateY(-2px)}.primary-link span{color:var(--lime);font-size:1.3rem}
.wave-figure{margin:12px 0 0;color:var(--green);background:#eef3ec;border:1px solid #dbe5d9;border-radius:6px;overflow:hidden;transform:rotate(-2deg)}
.figure-top,.wave-figure figcaption{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 25px;font-size:.75rem;letter-spacing:.06em}
.figure-top{border-bottom:1px solid #dbe5d9}.figure-top span:last-child{font-family:monospace;color:var(--muted)}
.wave-figure svg{display:block;width:100%;height:auto}.wave-figure figcaption{border-top:1px solid #dbe5d9;font-size:.875rem}.wave-figure figcaption span:last-child{color:var(--muted);font-family:var(--serif)}
.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;padding-bottom:29px;border-bottom:1px solid var(--ink)}
.section-heading .eyebrow,.about-section .eyebrow{margin-bottom:12px;font-size:.75rem}
.section-heading h2{font-size:1.625rem;letter-spacing:.035em;margin:0}.count{font-size:.875rem;color:var(--muted);font-family:monospace;font-weight:400}
.section-aside{font-size:.875rem;color:var(--muted);padding-bottom:4px}
.note-row{display:grid;grid-template-columns:50px 1fr 100px;gap:24px;padding:31px 0;border-bottom:1px solid var(--line);transition:background .2s}
.note-row:hover{background:#f0f4ee}.note-number{padding-top:3px;color:var(--muted);font: .875rem/1.7 monospace}
.category{font-size:.75rem;color:var(--green);font-weight:500;display:block;margin-bottom:9px}.note-body h3{font-size:1.375rem;line-height:1.55;font-weight:550;margin:0 0 9px;letter-spacing:.015em}.note-body p{color:var(--muted);font-size:.9375rem;margin:0}
.note-end{display:flex;flex-direction:column;align-items:flex-end;justify-content:space-between;gap:12px;color:var(--muted);font-size:.75rem;white-space:nowrap}.note-arrow{display:grid;place-items:center;font-size:1.3rem;border:1px solid var(--line);border-radius:50%;width:38px;height:38px;transition:background .2s,color .2s}.note-row:hover .note-arrow{background:var(--green);color:var(--lime);border-color:var(--green)}
.about-section{display:grid;grid-template-columns:1fr 1.25fr;gap:80px;padding:58px 48px;margin:78px 0;background:#edf2ec;border-radius:6px}
.about-section h2{font-family:var(--serif);font-size:1.875rem;line-height:1.6;margin:0}.about-copy p{font-size:.9375rem;color:#536059;margin-bottom:18px;line-height:1.95}.text-link{display:inline-flex;gap:25px;align-items:center;font-size:.875rem;border-bottom:1px solid #9aada1;padding-bottom:3px}.text-link:hover{border-color:var(--green)}
.site-footer{border-top:1px solid var(--line);padding:32px 0 36px;display:flex;justify-content:space-between;gap:26px;font-size:.75rem;color:var(--muted)}.site-footer>div{display:flex;flex-direction:column;gap:5px}.footer-name{font-size:.875rem;color:var(--ink);font-weight:600;letter-spacing:.06em}.footer-legal{text-align:right}.footer-legal a:hover{text-decoration:underline;text-underline-offset:3px}
.article{max-width:740px;margin:0 auto;padding:48px 0 80px}.back-link{display:inline-block;font-size:.875rem;color:var(--muted);padding:8px 0}.back-link:hover{color:var(--green)}
.article-header{padding:50px 0 30px;border-bottom:1px solid var(--line);margin-bottom:34px}.article-header .eyebrow{margin-bottom:19px}.meta-separator{margin:0 8px;color:#9aa69e}.article-header h1{font:500 clamp(2rem,3.5vw,2.75rem)/1.45 var(--serif);letter-spacing:.025em;margin-bottom:22px}.article-header>p:last-child{color:var(--muted);font-size:1rem;margin:0}
.prose{font-size:1.0625rem;line-height:2}.prose p{margin-bottom:24px}.prose .lead{font-size:1.125rem;color:#354d41}.prose h2{font-size:1.375rem;font-weight:600;margin:42px 0 18px}.prose blockquote{margin:34px 0;padding:22px 26px;background:#edf2ec;border-left:3px solid var(--green);font:500 1.25rem/1.9 var(--serif);color:var(--green)}
.next-note{border-top:1px solid var(--line);margin-top:58px;padding-top:28px}.next-note .eyebrow{margin-bottom:12px}.next-note a{display:flex;justify-content:space-between;gap:20px;font-size:1.125rem}.next-note a:hover{color:var(--green);text-decoration:underline;text-underline-offset:5px}
.not-found{padding:100px 0 120px;min-height:65vh}.not-found h1{font:500 clamp(2.5rem,5vw,4rem)/1.4 var(--serif)}.not-found>p:not(.eyebrow){color:var(--muted);margin-bottom:32px}
@media(min-width:1400px){.hero{padding-top:106px;padding-bottom:112px}}
@media(max-width:1000px){.site-shell{padding:0 36px}.hero{gap:28px;padding:64px 0 76px}.hero h1{font-size:3.1rem}.about-section{gap:40px;padding:40px 32px}.figure-top,.wave-figure figcaption{padding:17px 20px}}
@media(max-width:720px){.site-shell{padding:0 24px}.site-header{min-height:90px;gap:18px;flex-wrap:wrap;padding:18px 0}.brand{font-size:1rem;gap:9px}.brand-mark{width:32px;height:32px}nav{gap:20px}.hero{grid-template-columns:1fr;gap:32px;padding:52px 0 58px}.hero h1{font-size:clamp(2.75rem,8vw,3.5rem)}.hero .eyebrow{margin-bottom:20px}.hero-description{font-size:1rem}.wave-figure{max-width:460px;width:100%;margin:0 auto;transform:none}.section-heading{align-items:flex-start;flex-direction:column;gap:10px;padding-bottom:22px}.section-heading h2{font-size:1.5rem}.section-aside{font-size:.8125rem}.note-row{grid-template-columns:26px 1fr;gap:12px;padding:26px 0}.note-body h3{font-size:1.2rem}.note-body p{font-size:.9375rem}.note-end{grid-column:2;flex-direction:row;align-items:center;justify-content:space-between}.note-arrow{width:30px;height:30px;font-size:1.1rem}.about-section{grid-template-columns:1fr;gap:26px;padding:30px 24px;margin:48px 0}.about-section h2{font-size:1.625rem}.about-section h2 br{display:none}.site-footer{flex-direction:column;gap:18px}.footer-legal{text-align:left}.article{padding:28px 0 50px}.article-header{padding-top:28px}.prose{font-size:1rem}.prose .lead{font-size:1.0625rem}.prose blockquote{padding:18px 22px;font-size:1.125rem}.not-found{padding:64px 0 80px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}