:root{--bg:#edf2f7;--paper:#fbfcfe;--ink:#233a50;--muted:#607287;--line:#d6e0e9;--blue:#325f93;--accent:#7e587f;--display:Georgia,'Times New Roman',serif;--body:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;--utility:'SFMono-Regular',Consolas,monospace}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:36px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:6px}a:hover{color:var(--blue)}.wrap{max-width:1140px;margin:auto;padding-inline:48px}.site-header{height:112px;display:flex;align-items:center;justify-content:space-between;background:var(--bg)}body:before{content:'';position:absolute;inset:0 0 auto;height:750px;background:var(--bg);z-index:-1}.wordmark{font:italic 36px var(--display);letter-spacing:-2px}.wordmark span{color:var(--accent)}nav{display:flex;gap:34px;font-size:14px}nav a{padding:8px 0;border-bottom:1px solid transparent}nav a:hover{border-color:var(--blue)}.skip{position:fixed;top:8px;left:16px;z-index:10;background:white;padding:8px 16px;transform:translateY(-150%)}.skip:focus{transform:none}.hero{background:var(--bg);display:grid;grid-template-columns:1.2fr 1fr;align-items:center;min-height:590px;padding-top:44px;padding-bottom:90px;gap:24px}.eyebrow{font-size:12px;letter-spacing:.16em;font-weight:600;color:var(--muted);margin:0 0 22px;line-height:1.6}.hero .eyebrow{letter-spacing:.06em;display:flex;align-items:center;gap:9px}.dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}h1{font-size:30px;font-weight:500;line-height:1.4;letter-spacing:-.02em;margin:0}.name{display:block;font-family:var(--display);font-size:112px;font-weight:400;line-height:1.1;letter-spacing:-.075em;margin:6px 0 12px}.name-dot{color:var(--accent)}.chinese-name{font-size:19px;letter-spacing:.24em;margin:0 0 26px}.hero-description{font-size:17px;color:var(--muted);line-height:1.9;margin:0 0 28px}.text-link{display:inline-flex;gap:30px;align-items:center;font-size:14px;border-bottom:1px solid #91a9c0;padding-bottom:7px}.text-link span{font-size:21px}.diagram{padding-top:40px;max-width:440px}.diagram svg{width:100%;display:block}.route-soft{fill:none;stroke:#dae4ee;stroke-width:18}.route{fill:none;stroke:var(--blue);stroke-width:2}.feedback{fill:none;stroke:#9cafc2;stroke-width:1.5;stroke-dasharray:5 6}.node{fill:var(--paper);stroke:#a1b7cb;stroke-width:1.5}.core{stroke:var(--accent);stroke-width:2;fill:#f6f0f8}.point{fill:var(--blue)}.check{fill:none;stroke:var(--accent);stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}.svg-label{font:14px var(--body);fill:var(--ink);text-anchor:middle}.svg-caption{font:11px var(--body);fill:var(--muted);text-anchor:middle;letter-spacing:3px}.diagram-caption{font-size:11px;color:var(--muted);display:flex;justify-content:center;align-items:center;gap:10px;letter-spacing:.13em}.caption-line{width:24px;height:1px;background:var(--blue)}.section{padding-block:90px;border-bottom:1px solid var(--line)}.section h2{font-size:29px;font-weight:500;line-height:1.45;letter-spacing:-.035em;margin:0}.section-heading .eyebrow{margin-bottom:14px;font-family:var(--utility);font-size:11px;letter-spacing:.13em}.about{display:grid;grid-template-columns:1fr 1.45fr;gap:80px}.about-copy p{margin:0 0 22px;color:var(--muted);font-size:15px;line-height:2}.principles{display:flex;flex-wrap:wrap;gap:10px 26px;font-size:12px;margin-top:28px}.principles span:before{content:'／';color:var(--accent);margin-right:8px}.horizontal{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:48px;gap:24px}.section-note{font-size:13px;color:var(--muted);margin:0}.practice-row{display:grid;grid-template-columns:1fr 1.45fr;gap:80px;padding-block:35px;border-top:1px solid var(--line)}.practice-row:last-child{padding-bottom:0}.category{font-size:11px;color:var(--accent);letter-spacing:.1em}.practice-side h3{font-size:22px;font-weight:500;margin:8px 0 7px}.practice-side p{font-size:13px;color:var(--muted);margin:0}.practice-body p{font-size:15px;color:var(--muted);margin:0;line-height:2}.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}.tags span{font-size:11px;padding:3px 10px;background:var(--bg);border-radius:4px;line-height:1.7;color:#526b83}.learning{display:grid;grid-template-columns:1fr 1.45fr;gap:80px}.learning-intro{font-size:14px;line-height:1.95;color:var(--muted);margin:22px 0 0}.learning-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line)}summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:21px 0;font-size:17px;line-height:1.6}summary::-webkit-details-marker{display:none}summary small{display:block;font-size:11px;color:var(--muted);letter-spacing:.08em;margin-bottom:4px}.plus{font-size:24px;font-weight:300;color:var(--blue);transition:transform .2s}details[open] .plus{transform:rotate(45deg)}details p{font-size:14px;color:var(--muted);margin:0 38px 24px 0;line-height:1.9}summary:hover{color:var(--blue)}footer{padding-top:32px;padding-bottom:36px;display:flex;align-items:center;justify-content:space-between;font-size:11px;color:var(--muted)}footer p{display:flex;align-items:center;gap:20px;margin:0}footer strong{font:italic 23px var(--display);color:var(--ink)}footer a{padding:8px 0}footer a span{margin-left:12px}@media(min-width:1400px){.hero{min-height:640px}body:before{height:790px}}@media(max-width:850px){.wrap{padding-inline:30px}.hero{gap:0}.name{font-size:95px}.hero h1{font-size:26px}.diagram{padding-top:20px}.about,.practice-row,.learning{gap:38px;grid-template-columns:1fr 1.4fr}.section h2{font-size:25px}.section{padding-block:65px}.section-note{max-width:180px}.hero-description{font-size:15px}}@media(max-width:620px){.wrap{padding-inline:24px}.site-header{height:88px}.wordmark{font-size:30px}nav{gap:22px;font-size:13px}.hero{grid-template-columns:1fr;padding-top:42px;padding-bottom:46px;min-height:auto}.hero h1{font-size:25px}.name{font-size:100px;margin-top:7px}.chinese-name{font-size:17px;margin-bottom:21px}.hero-description{font-size:16px}.diagram{width:100%;max-width:310px;justify-self:center;margin-top:23px;padding-top:0}.diagram-caption{margin-top:-5px}.section{padding-block:52px}.about,.practice-row,.learning{grid-template-columns:1fr;gap:26px}.section h2{font-size:26px}.about-copy p{font-size:15px}.principles{gap:8px 17px;font-size:11px}.horizontal{display:block;margin-bottom:30px}.section-note{max-width:none;margin-top:18px}.practice-row{padding-block:29px;gap:18px}.practice-side h3{font-size:21px}.practice-body p{font-size:14px}.tags{margin-top:17px}.learning{gap:30px}summary{font-size:16px}.learning-intro{margin-top:16px}footer{align-items:flex-start;padding-block:27px}footer p{display:block}footer p span{display:block;margin-top:7px;font-size:10px}footer a{font-size:11px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.plus{transition:none}}

/* Chinese name typography */
.wordmark{font:500 20px var(--body);letter-spacing:.1em}.name{font-family:var(--body);font-size:76px;font-weight:500;letter-spacing:-.045em;margin:20px 0 32px}footer strong{font:500 18px var(--body)}@media(max-width:850px){.name{font-size:64px}}@media(max-width:620px){.wordmark{font-size:18px}.name{font-size:64px;margin:18px 0 28px}}