/* ===== 水果派主页 共享样式 /assets/site.css ===== */

/* 1. RESET */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--masthead-h) + 20px)}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}

/* 2. 变量 */
:root{
  --paper:#FBF4E7;
  --apricot:#F2E2C8;
  --ink:#17130E;
  --mango:#EF7A1A;
  --mango-deep:#B4520C;
  --berry:#A31E52;
  --lime:#5F8F12;
  --pit:#6D4B31;
  --cream:#EDE5D8;
  --white:#FFFFFF;
  --line:1px solid var(--ink);
  --hair:1px solid rgba(23,19,14,.24);
  --rail-w:104px;
  --masthead-h:68px;
  --font-display:"Noto Sans SC","Alibaba PuHuiTi","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --step-1:15px;
  --step-2:18px;
  --step-3:28px;
  --step-4:44px;
  --step-5:96px;
  --ease:cubic-bezier(.2,.62,.24,1);
}

/* 3. 基础排版 */
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  padding-top:calc(var(--masthead-h) + 2px);
  padding-left:var(--rail-w);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;letter-spacing:-.02em;line-height:1.15}
h1{font-size:clamp(38px,6.4vw,84px)}
h2{font-size:clamp(28px,3.8vw,44px)}
h3{font-size:var(--step-3);line-height:1.3}
h4{font-size:var(--step-2);line-height:1.4}
p{max-width:38em}
strong{font-weight:700}
small{font-size:13px}
.num,.tabular{font-variant-numeric:tabular-nums}
:focus-visible{outline:3px solid var(--berry);outline-offset:3px}
::selection{background:var(--mango);color:var(--ink)}
main{display:block;flex:1 0 auto}
main:focus{outline:none}

/* 4. 页面容器与网格 */
.wrap{width:100%;max-width:1160px;margin:0 auto;padding:0 clamp(16px,3vw,32px)}
.grid{display:grid;gap:clamp(14px,2.2vw,24px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.grid--index{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:0}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}

/* 5. 通用文字与标记 */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.2em;color:var(--pit);text-transform:none}
.eyebrow::before{content:"";width:14px;height:8px;background:var(--mango);border:1px solid var(--ink)}
.section-title{font-family:var(--font-display);font-weight:900;font-size:clamp(26px,3.4vw,44px);line-height:1.15;letter-spacing:-.02em}
.lead{font-size:clamp(17px,1.5vw,19px);line-height:1.72;max-width:34em}
.meta{font-size:13px;letter-spacing:.05em;color:var(--pit);font-variant-numeric:tabular-nums}
.note{font-size:14px;line-height:1.72;color:var(--pit);border-left:3px solid var(--mango);padding-left:12px;max-width:34em}
.tape{display:inline-block;background:var(--apricot);border:1px dashed var(--pit);padding:1px 10px;font-size:12px;letter-spacing:.06em;transform:rotate(-1.4deg)}
.divider{border:0;border-top:var(--line);margin:clamp(20px,3vw,36px) 0}
.tag{display:inline-flex;align-items:center;gap:6px;padding:2px 9px;border:1px solid var(--ink);background:var(--cream);font-size:12px;font-weight:700;letter-spacing:.06em;line-height:1.7}
.tag--berry{background:var(--berry);border-color:var(--berry);color:var(--white)}
.tag--mango{background:var(--mango);border-color:var(--ink);color:var(--ink)}

/* 6. 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:var(--line);background:var(--paper);color:var(--ink);font-family:var(--font-display);font-weight:700;font-size:15px;letter-spacing:.02em;padding:10px 18px;text-align:center;transition:background .16s var(--ease),color .16s var(--ease),transform .16s var(--ease)}
.btn:hover{background:var(--ink);color:var(--white)}
.btn:active{transform:translateY(1px)}
.btn--solid{background:var(--mango);color:var(--ink)}
.btn--solid:hover{background:var(--ink);color:var(--white)}
.btn--member{background:var(--mango);color:var(--ink);font-size:14px;padding:8px 14px}
.btn--member:hover{background:var(--ink);color:var(--white)}

/* 7. 面包屑 */
.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;letter-spacing:.04em;color:var(--pit);padding:14px 0}
.breadcrumbs__link{border-bottom:1px solid transparent;transition:border-color .16s var(--ease),color .16s var(--ease)}
.breadcrumbs__link:hover{color:var(--ink);border-bottom-color:var(--ink)}
.breadcrumbs__sep{color:var(--pit)}
.breadcrumbs__current{color:var(--ink);font-weight:700}

/* 8. 章节面板 */
.panel{background:var(--paper);border:var(--line);position:relative}
.panel__head{display:flex;align-items:center;gap:12px;padding:10px 14px;border-bottom:var(--line);background:var(--cream)}
.panel__num{display:grid;place-items:center;min-width:36px;height:34px;padding:0 6px;background:var(--mango);color:var(--ink);border:1px solid var(--ink);font-family:var(--font-display);font-weight:900;font-size:15px;font-variant-numeric:tabular-nums;line-height:1}
.panel__label{font-family:var(--font-display);font-weight:700;font-size:15px;letter-spacing:.04em}
.panel__body{padding:clamp(16px,2.4vw,28px)}

/* 9. 索引行 */
.indexlist{display:flex;flex-direction:column;border-top:var(--line)}
.indexlist__row{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:baseline;padding:10px 12px;border-bottom:var(--hair);font-size:15px}
.indexlist__row:nth-child(even){background:var(--cream)}
.indexlist__key{font-size:13px;letter-spacing:.08em;color:var(--pit);font-variant-numeric:tabular-nums}
.indexlist__val{font-weight:500;font-variant-numeric:tabular-nums}

/* 10. 图片容器 */
.img-frame{position:relative;display:block;border:var(--line);background:var(--apricot);overflow:hidden;aspect-ratio:16/10}
.img-frame img{width:100%;height:100%;object-fit:cover}
.img-frame--wide{aspect-ratio:21/9}
.img-frame--square{aspect-ratio:1/1}
.img-frame--tall{aspect-ratio:3/4}
.img-frame--micro{aspect-ratio:4/5}
.img-frame__cap{position:absolute;left:0;bottom:0;max-width:100%;background:var(--ink);color:var(--white);font-size:12px;letter-spacing:.06em;padding:4px 9px;line-height:1.6}

/* 11. 渐显 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s var(--ease),transform .24s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* 12. 跳转链接与进度线 */
.skip-link{position:fixed;top:8px;left:8px;z-index:140;background:var(--ink);color:var(--white);padding:10px 16px;font-size:15px;letter-spacing:.02em;transform:translateY(-180%);transition:transform .18s var(--ease)}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0);outline-color:var(--mango)}
.scroll-progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:130;background:rgba(23,19,14,.14)}
.scroll-progress__fill{display:block;width:0;height:100%;background:var(--mango);transition:width .1s linear}

/* 13. 头部 */
.site-header{position:relative;z-index:110}
.masthead{position:fixed;top:2px;left:0;right:0;height:var(--masthead-h);z-index:110;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 18px;background:var(--paper);border-bottom:var(--line)}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand__stamp{display:grid;place-items:center;width:38px;height:38px;background:var(--mango);color:var(--ink);border:1px solid var(--ink);font-family:var(--font-display);font-weight:900;font-size:20px;line-height:1}
.brand__text{display:flex;flex-direction:column;line-height:1.16}
.brand__name{font-family:var(--font-display);font-weight:900;font-size:19px;letter-spacing:-.02em}
.brand__line{font-size:11.5px;letter-spacing:.16em;color:var(--pit)}
.brand--footer .brand__stamp{width:44px;height:44px;font-size:23px}
.brand--footer .brand__name{font-size:22px}
.statusline{display:flex;align-items:stretch;border:var(--line);background:var(--cream);flex:0 1 auto}
.statusline__item{display:flex;align-items:center;gap:7px;padding:5px 13px;font-size:12.5px;letter-spacing:.03em;color:var(--ink);white-space:nowrap}
.statusline__item + .statusline__item{border-left:var(--line)}
.statusline__dot{width:7px;height:7px;flex:0 0 auto;background:var(--pit)}
.statusline__dot--mango{background:var(--mango)}
.statusline__dot--berry{background:var(--berry)}
.statusline__dot--lime{background:var(--lime)}
.statusline__val{font-weight:700;font-variant-numeric:tabular-nums}
.masthead__actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{display:none;align-items:center;gap:8px;border:var(--line);background:var(--cream);padding:7px 10px;font-size:13px;letter-spacing:.1em}
.nav-toggle:hover{background:var(--apricot)}
.nav-toggle__bars{display:flex;flex-direction:column;justify-content:center;gap:3px;width:16px;height:14px}
.nav-toggle__bars span{display:block;height:2px;background:var(--ink);transition:transform .18s var(--ease),opacity .18s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.nav-toggle__text{line-height:1}

/* 侧边轨道导航（桌面） */
.nav-rail{position:fixed;top:calc(var(--masthead-h) + 2px);left:0;bottom:0;width:var(--rail-w);z-index:105;display:flex;flex-direction:column;justify-content:center;padding:16px 0;background:var(--apricot);border-right:var(--line);overflow-y:auto;scrollbar-width:thin}
.nav-rail__list{display:flex;flex-direction:column;gap:2px;width:100%}
.nav-rail__item{display:block}
.nav-rail__link{display:flex;flex-direction:column;align-items:center;gap:7px;padding:10px 4px;border-top:1px solid transparent;border-bottom:1px solid transparent;color:var(--ink);transition:background .16s var(--ease),color .16s var(--ease)}
.nav-rail__num{font-size:10.5px;letter-spacing:.1em;color:var(--pit);font-variant-numeric:tabular-nums}
.nav-rail__label{writing-mode:vertical-rl;text-orientation:mixed;font-family:var(--font-display);font-weight:700;font-size:14px;letter-spacing:.16em;line-height:1.15}
.nav-rail__link:hover{background:var(--cream)}
.nav-rail__link[aria-current="page"]{background:var(--mango);border-color:var(--ink);color:var(--ink)}
.nav-rail__link[aria-current="page"] .nav-rail__num{color:var(--ink)}

/* 返回顶部 */
.to-top{position:fixed;right:16px;bottom:16px;z-index:115;display:inline-flex;align-items:center;gap:6px;background:var(--ink);color:var(--white);border:1px solid var(--ink);padding:9px 12px;font-size:13px;letter-spacing:.08em;font-variant-numeric:tabular-nums;opacity:0;transform:translateY(10px);pointer-events:none;transition:opacity .2s var(--ease),transform .2s var(--ease),background .16s var(--ease),color .16s var(--ease)}
.to-top[data-visible="true"]{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{background:var(--mango);color:var(--ink)}
.to-top__arrow{font-size:14px;line-height:1}
.to-top__label{line-height:1}

/* 14. 页脚 */
.site-footer{flex:0 0 auto;background:var(--apricot);border-top:var(--line);position:relative;z-index:1}
.footer__grid{display:grid;grid-template-columns:1.45fr 1fr 1fr 1.5fr}
.footer__col{padding:32px 24px 36px;border-left:var(--line);min-width:0}
.footer__col:first-child{border-left:0}
.footer__col--brand{background:var(--paper)}
.footer__title{display:flex;align-items:center;gap:8px;font-family:var(--font-display);font-size:13px;font-weight:900;letter-spacing:.18em;color:var(--pit);padding-bottom:9px;margin-bottom:12px;border-bottom:var(--hair)}
.footer__title::before{content:"";width:8px;height:8px;background:var(--mango);border:1px solid var(--ink)}
.footer__claim{font-family:var(--font-display);font-weight:900;font-size:19px;line-height:1.45;letter-spacing:-.01em;margin-top:16px;max-width:20em}
.footer__status{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.footer__status-item{border:1px solid var(--ink);background:var(--cream);padding:3px 8px;font-size:11.5px;letter-spacing:.04em;font-variant-numeric:tabular-nums;line-height:1.7}
.footer__list{display:flex;flex-direction:column;gap:1px}
.footer__link{display:inline-flex;align-items:center;gap:7px;padding:4px 0;font-size:15px;line-height:1.6;border-bottom:1px solid transparent;transition:color .16s var(--ease),border-color .16s var(--ease)}
.footer__link::before{content:"";width:6px;height:1px;background:var(--pit);flex:0 0 auto;transition:width .16s var(--ease),background .16s var(--ease)}
.footer__link:hover{color:var(--mango-deep)}
.footer__link:hover::before{width:12px;background:var(--mango-deep)}
.footer__link--cta{margin-top:14px;font-family:var(--font-display);font-weight:900;font-size:15px;border-bottom:2px solid var(--mango);padding-bottom:2px}
.footer__contact{display:flex;flex-direction:column;gap:10px}
.footer__contact-item{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px;font-size:14px;line-height:1.6}
.footer__contact-key{font-size:11.5px;letter-spacing:.14em;color:var(--pit);flex:0 0 auto}
.footer__contact-val{font-variant-numeric:tabular-nums;overflow-wrap:anywhere;flex:1 1 auto;min-width:0}
.copy-btn{border:1px solid var(--ink);background:var(--paper);padding:1px 7px;font-size:11.5px;letter-spacing:.06em;line-height:1.7;transition:background .16s var(--ease),color .16s var(--ease)}
.copy-btn:hover{background:var(--ink);color:var(--white)}
.copy-btn[data-copied="true"]{background:var(--lime);border-color:var(--lime);color:var(--white)}
.footer__note{margin-top:14px;font-size:12.5px;line-height:1.72;color:var(--pit);max-width:30em}
.footer__bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 20px;padding:13px 20px;border-top:var(--line);background:var(--paper);font-size:12.5px;color:var(--pit)}
.footer__icp{font-variant-numeric:tabular-nums;letter-spacing:.05em}
.footer__copy{font-variant-numeric:tabular-nums;letter-spacing:.05em}
.footer__legal{display:flex;flex-wrap:wrap;gap:16px}
.footer__legal-link{border-bottom:1px solid transparent;transition:color .16s var(--ease),border-color .16s var(--ease)}
.footer__legal-link:hover{color:var(--ink);border-bottom-color:var(--ink)}

/* 15. 平板 */
@media (max-width:1023px){
  .footer__grid{grid-template-columns:1fr 1fr}
  .footer__col{padding:26px 20px 30px}
  .footer__col:nth-child(2n+1){border-left:0}
  .footer__col:nth-child(n+3){border-top:var(--line)}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .span-4,.span-5,.span-6,.span-7,.span-8{grid-column:span 6}
}
@media (max-width:959px){
  :root{--rail-w:0px;--masthead-h:92px}
  body{padding-left:0;font-size:16px}
  .masthead{flex-wrap:wrap;align-content:center;row-gap:6px;padding:8px 12px}
  .masthead .brand{order:1}
  .masthead__actions{order:2;margin-left:auto}
  .statusline{order:3;flex:1 0 100%;justify-content:space-between}
  .statusline__item{padding:3px 8px;font-size:11px;letter-spacing:0}
  .statusline__item + .statusline__item{border-left:var(--hair)}
  .nav-toggle{display:inline-flex}
  .nav-rail{width:300px;max-width:86vw;top:calc(var(--masthead-h) + 2px);justify-content:flex-start;padding:6px 0 24px;transform:translateX(-101%);transition:transform .22s var(--ease)}
  .nav-rail[data-open="true"]{transform:translateX(0)}
  .nav-rail__list{gap:0}
  .nav-rail__link{flex-direction:row;align-items:center;justify-content:flex-start;gap:12px;padding:15px 18px;border-top:0;border-bottom:1px solid rgba(23,19,14,.18)}
  .nav-rail__num{width:24px;font-size:12px}
  .nav-rail__label{writing-mode:horizontal-tb;text-orientation:initial;font-size:17px;letter-spacing:.06em}
  .nav-rail__link[aria-current="page"]{border-bottom-color:var(--ink)}
  body.nav-open{overflow:hidden}
  body.nav-open::before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(23,19,14,.42);z-index:104}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .span-4,.span-5{grid-column:span 6}
  .span-7,.span-8{grid-column:span 6}
}
/* 16. 手机 */
@media (max-width:639px){
  :root{--masthead-h:96px}
  body{font-size:16px}
  h1{font-size:clamp(34px,9vw,48px)}
  .masthead{padding:8px 10px}
  .brand__stamp{width:34px;height:34px;font-size:18px}
  .brand__name{font-size:17px}
  .brand__line{font-size:10.5px;letter-spacing:.12em}
  .btn--member{padding:7px 9px;font-size:12px;letter-spacing:0}
  .statusline__item{font-size:10.5px;padding:2px 6px;gap:5px}
  .statusline__dot{width:6px;height:6px}
  .footer__grid{grid-template-columns:1fr}
  .footer__col{border-left:0;border-top:var(--line);padding:22px 16px}
  .footer__col:first-child{border-top:0}
  .footer__bottom{justify-content:flex-start;padding:12px 16px}
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .grid--12{grid-template-columns:1fr}
  .span-4,.span-5,.span-6,.span-7,.span-8,.span-12{grid-column:span 1}
  .indexlist__row{grid-template-columns:auto 1fr;row-gap:2px}
  .img-frame--tall,.img-frame--micro{aspect-ratio:4/5}
  .to-top{right:10px;bottom:10px;padding:8px 10px;font-size:12px}
}
/* 17. 降低动效 */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
  .to-top{transform:none}
  .nav-rail{transition:none}
}