:root{--ink:#27251e;--paper:#f7f3eb;--card:#fffdf8;--line:rgba(52,44,27,.16);--accent:#315a43;--accent-soft:#dce8dc;--warm:#9e3d36;--night:#182b24;--shadow:0 20px 48px rgba(45,37,21,.11)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:"Microsoft YaHei",system-ui,sans-serif;line-height:1.65}.season-page{min-height:100vh;overflow:hidden}.shell{width:min(1120px,calc(100% - 40px));margin:auto}.topbar{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{font-family:STKaiti,"KaiTi",serif;font-size:1.45rem;letter-spacing:.16em;color:var(--accent);text-decoration:none}.topnav{display:flex;gap:18px;align-items:center;flex-wrap:wrap}.topnav a,.season-switch a{color:inherit;text-decoration:none;font-size:.84rem}.topnav a:hover,.season-switch a:hover{color:var(--accent)}.hero{position:relative;isolation:isolate;padding:76px 0 68px;min-height:540px;display:flex;align-items:end;background:radial-gradient(circle at 76% 18%,var(--glow),transparent 22%),linear-gradient(135deg,var(--hero-start),var(--hero-end))}.hero:before{content:"";position:absolute;inset:0;z-index:-1;opacity:.32;background:repeating-linear-gradient(115deg,transparent 0 60px,rgba(255,255,255,.22) 61px 62px)}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:end}.eyebrow{margin:0 0 16px;font:600 .78rem/1 "Microsoft YaHei",sans-serif;letter-spacing:.2em;color:var(--accent);text-transform:uppercase}.hero h1{font:clamp(3.2rem,8vw,6.9rem)/.92 STKaiti,"KaiTi",serif;letter-spacing:.08em;margin:0;color:var(--night)}.hero h1 span{display:block;font:500 1rem/1.4 "Microsoft YaHei",sans-serif;letter-spacing:.28em;margin:17px 0 0;color:var(--accent)}.hero-copy{max-width:34rem;font-size:1.06rem;margin:28px 0}.actions{display:flex;gap:12px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 19px;border-radius:999px;text-decoration:none;font-size:.88rem;font-weight:700;letter-spacing:.06em;background:var(--accent);color:#fff;box-shadow:0 10px 22px color-mix(in srgb,var(--accent) 25%,transparent)}.button.secondary{background:rgba(255,255,255,.58);color:var(--accent);border:1px solid var(--line);box-shadow:none}.scene{min-height:300px;border:1px solid rgba(255,255,255,.55);border-radius:28px;position:relative;overflow:hidden;background:linear-gradient(155deg,rgba(255,255,255,.62),rgba(255,255,255,.08))}.scene:before,.scene:after{content:"";position:absolute;border-radius:50%}.scene:before{width:210px;height:210px;right:12%;top:12%;background:var(--sun);box-shadow:0 0 0 28px rgba(255,255,255,.16)}.scene:after{width:135%;height:42%;left:-15%;bottom:-24%;background:var(--hill);border-radius:50% 50% 0 0/100% 100% 0 0;box-shadow:0 -22px 0 var(--hill-back)}.scene-mark{position:absolute;z-index:1;right:13%;bottom:18%;font:5.5rem/1 STKaiti,"KaiTi",serif;color:var(--scene-mark);opacity:.78}.content{padding:82px 0}.intro{max-width:720px;margin-bottom:42px}.kicker{font-size:.76rem;letter-spacing:.18em;color:var(--warm);font-weight:700}.intro h2{font:2.35rem/1.25 STKaiti,"KaiTi",serif;margin:12px 0}.intro p{margin:0;color:#655e50}.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.principle{padding:24px;background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 22px rgba(45,37,21,.04)}.principle b{display:block;color:var(--accent);font:1.38rem STKaiti,"KaiTi",serif;margin-bottom:9px}.principle p{margin:0;font-size:.9rem;color:#625b4d}.season-switch{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:22px 0;display:flex;justify-content:space-between;gap:18px;align-items:center}.season-switch span{font-size:.78rem;letter-spacing:.12em;color:#77705f}.season-links{display:flex;gap:14px;flex-wrap:wrap}.season-links a{padding:5px 0;border-bottom:1px solid transparent}.season-links a[aria-current="page"]{color:var(--accent);border-bottom-color:var(--accent);font-weight:700}.closing{padding:70px 0 90px;background:var(--night);color:#f8f4ea}.closing .shell{display:flex;justify-content:space-between;align-items:center;gap:30px}.closing h2{font:2.2rem/1.25 STKaiti,"KaiTi",serif;margin:0 0 8px}.closing p{margin:0;color:rgba(255,255,255,.7)}.closing .button{background:#f6f0df;color:var(--night)}.footer{padding:24px 0;background:#122219;color:rgba(255,255,255,.58);font-size:.75rem}.footer .shell{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}.spring{--hero-start:#f7eee7;--hero-end:#dfeade;--glow:#ffd7db;--sun:#fff1df;--hill:#b6cfad;--hill-back:#92af89;--scene-mark:#bf6d7c}.summer{--hero-start:#e5f0e9;--hero-end:#dce5e5;--glow:#cce7e0;--sun:#f4edbc;--hill:#72a997;--hill-back:#477d70;--scene-mark:#376f69}.autumn{--hero-start:#f1e5cf;--hero-end:#e4d5c2;--glow:#f2bf79;--sun:#f7d795;--hill:#ae7441;--hill-back:#79533c;--scene-mark:#a74d36}.winter{--hero-start:#e7ebeb;--hero-end:#d8dfde;--glow:#f6f3db;--sun:#fffef1;--hill:#8c9c9a;--hill-back:#637472;--scene-mark:#9c3d37}@media(max-width:760px){.shell{width:min(100% - 30px,1120px)}.topbar{padding:13px 0;align-items:flex-start}.topnav{gap:10px;justify-content:flex-end}.hero{padding:44px 0 36px;min-height:auto}.hero-grid{grid-template-columns:1fr;gap:28px}.scene{min-height:210px}.principles{grid-template-columns:1fr}.content{padding:58px 0}.season-switch{align-items:flex-start;flex-direction:column}.closing{padding:54px 0}.closing .shell{align-items:flex-start;flex-direction:column}.hero h1{font-size:3.8rem}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}