:root{--ink:#2b261f;--paper:#efe3d3;--cream:#fff8ed;--accent:#d5b37c;--night:#342d25;--line:rgba(70,54,38,.16)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--paper);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif}
a{color:inherit;text-decoration:none}
.portfolioNav{position:fixed;right:18px;bottom:18px;z-index:100;display:flex;gap:8px;padding:7px;border:1px solid rgba(255,255,255,.24);border-radius:999px;background:rgba(52,45,37,.8);box-shadow:0 15px 45px rgba(43,34,25,.2);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}
.portfolioNav button,.portfolioNav a{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 15px;border:0;border-radius:999px;color:#fff;background:transparent;font:700 12px/1 Arial,"PingFang SC",sans-serif;white-space:nowrap;cursor:pointer}
.portfolioNav a:last-child{color:var(--ink);background:var(--accent)}
.hubHero{min-height:58svh;padding:34px clamp(22px,6vw,92px) 70px;display:flex;flex-direction:column;justify-content:space-between;background:radial-gradient(circle at 78% 12%,rgba(255,255,255,.7),transparent 38%),linear-gradient(135deg,#e3c9a8,var(--paper))}
.hubTop{display:flex;justify-content:space-between;gap:20px;font-size:11px;letter-spacing:.14em}
.hubHero h1{max-width:1000px;margin:80px 0 20px;font-family:Georgia,"Noto Serif SC",serif;font-size:clamp(60px,10vw,144px);font-weight:400;line-height:.9;letter-spacing:-.07em}
.hubHero p{max-width:560px;margin:0;color:#665c51;font-size:15px;line-height:1.9}
.projectChoices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;padding:clamp(42px,7vw,100px) clamp(22px,6vw,92px) 120px}
.choiceCard{position:relative;min-height:620px;overflow:hidden;border-radius:30px;color:#fff;background:#2d2924;box-shadow:0 25px 70px rgba(48,38,27,.14);isolation:isolate}
.choiceCard img{position:absolute;inset:0 0 auto;width:100%;height:68%;object-fit:contain;object-position:center;opacity:1;transition:transform .8s cubic-bezier(.2,.75,.2,1),opacity .4s ease}
.choiceCard.coverYiwu img{background:#ff5939}
.choiceCard.coverCtrip img{background:#ddf8ff}
.choiceCard::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,transparent 45%,rgba(31,25,19,.12) 59%,rgba(31,25,19,.96) 72%)}
.choiceCard:hover img{transform:scale(1.025);opacity:.9}
.choiceCopy{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:38px}
.choiceIndex{font-size:10px;letter-spacing:.16em;opacity:.62}
.choiceCopy h2{margin:12px 0 10px;font-size:clamp(30px,4vw,54px);font-weight:500;letter-spacing:-.045em}
.choiceCopy p{max-width:520px;margin:0 0 24px;color:rgba(255,255,255,.72);font-size:13px;line-height:1.75}
.choiceAction{display:inline-flex;align-items:center;gap:16px;padding:13px 18px;border-radius:999px;color:var(--ink);background:var(--accent);font-size:12px;font-weight:800}
.projectHero{padding:50px clamp(20px,6vw,90px) 64px;text-align:center;background:linear-gradient(180deg,#e2cbaa,var(--paper))}
.projectHero .mini{font-size:10px;font-weight:800;letter-spacing:.18em}
.projectHero h1{margin:24px 0 15px;font-family:Georgia,"Noto Serif SC",serif;font-size:clamp(52px,8vw,112px);font-weight:400;letter-spacing:-.065em}
.projectHero p{max-width:620px;margin:0 auto;color:#6a6055;font-size:14px;line-height:1.85}
.pageStream{width:min(1280px,100% - 28px);margin:0 auto;padding:32px 0 130px}
.portfolioPage{display:block;width:100%;height:auto;margin:0 0 18px;border-radius:22px;background:#fff;box-shadow:0 18px 54px rgba(54,42,29,.09);opacity:0;transform:translateY(28px);transition:opacity .65s ease,transform .65s ease}
.portfolioPage.visible{opacity:1;transform:none}
.pageCounter{display:block;margin:0 0 9px;color:#86796b;font-size:9px;letter-spacing:.16em;text-align:right}
@media(max-width:760px){.projectChoices{grid-template-columns:1fr}.choiceCard{min-height:480px}.hubHero{min-height:50svh}.hubHero h1{margin-top:60px}.choiceCopy{padding:25px}.portfolioNav{left:10px;right:10px;bottom:10px;justify-content:center}.portfolioNav button,.portfolioNav a{flex:1;padding:0 8px;text-align:center}.pageStream{width:min(100% - 14px,1280px)}.portfolioPage{margin-bottom:9px;border-radius:12px}.projectHero{padding-top:36px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.choiceCard img,.portfolioPage{transition:none}.portfolioPage{opacity:1;transform:none}}