/* ============================================================
   大发指南 / 共享样式表  /assets/site.css
   深海蓝夜幕 + 荧光青状态 + 暖橙动作 + 标注米手写注脚
   ============================================================ */

/* ---------- 1. 变量与字体 ---------- */
:root{
  --ink-900:#071A2F;
  --ink-800:#0E2A47;
  --cyan:#35F2D6;
  --amber:#FF9A3C;
  --mist:#EAF2F8;
  --graphite:#16222E;
  --sand:#C9B79A;
  --green:#7CE0A3;
  --ember:#FF6B57;
  --grid:rgba(53,242,214,.12);

  --font-display:"Oswald","Archivo Narrow","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shell:1200px;
  --gutter:clamp(20px,5vw,64px);
  --r-lg:22px;
  --r-md:14px;
  --r-sm:9px;
  --line:1px solid rgba(53,242,214,.14);
}

/* ---------- 2. reset 与基础 ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--ink-900);
  color:var(--mist);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  background-image:
    radial-gradient(880px 520px at 84% -8%, rgba(53,242,214,.10), transparent 68%),
    radial-gradient(700px 460px at 2% 10%, rgba(255,154,60,.07), transparent 70%),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  background-attachment:fixed;
}
img,svg,video{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}

/* ---------- 3. 布局工具 ---------- */
.shell{
  width:calc(100% - var(--gutter) * 2);
  max-width:var(--shell);
  margin-inline:auto;
}
.section{position:relative;padding-block:clamp(38px,6.5vw,92px);}
.section--tight{padding-block:clamp(26px,4vw,54px);}
.sec-head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:12px 22px;
  margin-bottom:clamp(18px,3vw,32px);
}
.grid{display:grid;gap:clamp(16px,2.4vw,32px);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}

/* ---------- 4. 跳转链接 ---------- */
.skip-link{
  position:fixed;
  left:16px;
  top:-80px;
  z-index:200;
  padding:10px 20px;
  border-radius:0 0 12px 12px;
  background:var(--cyan);
  color:var(--ink-900);
  font-size:14px;
  font-weight:600;
  transition:top .18s ease;
}
.skip-link:focus{top:0;}

/* ---------- 5. 头部 ---------- */
.site-head{
  position:sticky;
  top:0;
  z-index:80;
  background:linear-gradient(180deg, rgba(7,26,47,.97), rgba(7,26,47,.83));
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:var(--line);
}
.site-head__inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:clamp(14px,3vw,40px);
  min-height:76px;
  padding-block:12px;
}
.head-progress{
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  background:rgba(53,242,214,.10);
  overflow:hidden;
}
.head-progress__bar{
  display:block;
  width:var(--progress,0%);
  height:100%;
  background:var(--cyan);
  box-shadow:0 0 12px rgba(53,242,214,.65);
}

/* ---------- 6. 品牌 ---------- */
.brand{display:flex;align-items:center;gap:14px;min-width:0;}
.brand__link{display:flex;align-items:center;gap:12px;min-width:0;}
.brand__mark{
  display:grid;
  place-items:center;
  flex:none;
  width:44px;height:44px;
  border-radius:13px;
  background:linear-gradient(150deg,var(--cyan),#12b7a2 72%);
  color:var(--ink-900);
  font-family:var(--font-display);
  font-size:15px;
  font-weight:700;
  letter-spacing:-.02em;
  box-shadow:0 8px 20px rgba(53,242,214,.22);
}
.brand__text{display:flex;flex-direction:column;line-height:1.22;min-width:0;}
.brand__name{
  font-family:var(--font-display);
  font-size:20px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand__note{
  font-size:11.5px;
  letter-spacing:.04em;
  color:rgba(234,242,248,.6);
  white-space:nowrap;
}
.brand__ver{
  flex:none;
  font-size:11.5px;
  padding:3px 11px;
  border-radius:999px;
  border:1px dashed rgba(201,183,154,.5);
  color:var(--sand);
  white-space:nowrap;
}

/* ---------- 7. 移动导航按钮 ---------- */
.nav-btn{
  display:none;
  align-items:center;
  gap:10px;
  padding:9px 15px;
  border-radius:999px;
  border:1px solid rgba(53,242,214,.35);
  background:rgba(53,242,214,.08);
  color:var(--mist);
  font-size:13px;
  letter-spacing:.1em;
  cursor:pointer;
  transition:background-color .18s ease,border-color .18s ease;
}
.nav-btn:hover{background:rgba(53,242,214,.16);border-color:rgba(53,242,214,.6);}
.nav-btn__bars{display:grid;gap:4px;width:16px;}
.nav-btn__bars span{
  display:block;
  height:2px;
  border-radius:2px;
  background:var(--cyan);
  transition:transform .2s ease,opacity .2s ease;
}
.site-head[data-open] .nav-btn__bars span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.site-head[data-open] .nav-btn__bars span:nth-child(2){opacity:0;}
.site-head[data-open] .nav-btn__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 8. 导航（桌面：左右分置右侧横排） ---------- */
.nav-band{display:flex;align-items:center;gap:clamp(14px,2.4vw,32px);}
.nav-band__list{display:flex;align-items:center;gap:2px;}
.nav-band__link{
  display:inline-block;
  padding:9px 13px;
  border-radius:999px;
  font-size:14.5px;
  letter-spacing:.02em;
  color:rgba(234,242,248,.78);
  transition:color .18s ease,background-color .18s ease;
}
.nav-band__link:hover{color:var(--mist);background:rgba(53,242,214,.09);}
.nav-band__link[aria-current="page"]{
  color:var(--ink-900);
  background:var(--cyan);
  font-weight:600;
}
.nav-band__acts{display:flex;align-items:center;gap:10px;}

/* ---------- 9. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border-radius:999px;
  border:1px solid transparent;
  font-family:var(--font-body);
  font-size:14px;
  font-weight:600;
  letter-spacing:.04em;
  cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn--solid{
  background:var(--amber);
  color:#20150a;
  box-shadow:0 10px 24px rgba(255,154,60,.24);
}
.btn--solid:hover{background:#ffab5c;transform:translateY(-1px);}
.btn--ghost{
  border-color:rgba(53,242,214,.45);
  background:rgba(53,242,214,.06);
  color:var(--cyan);
}
.btn--ghost:hover{background:rgba(53,242,214,.15);}
.btn--quiet{
  border-color:rgba(234,242,248,.22);
  color:var(--mist);
}
.btn--quiet:hover{border-color:rgba(234,242,248,.5);}
.btn--block{width:100%;}

/* ---------- 10. 面包屑 ---------- */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:rgba(234,242,248,.55);
}
.crumb__link{color:rgba(234,242,248,.74);transition:color .18s ease;}
.crumb__link:hover{color:var(--cyan);}
.crumb__sep{color:rgba(201,183,154,.7);}
.crumb [aria-current="page"]{color:var(--cyan);}

/* ---------- 11. 排版 ---------- */
.h-display{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(38px,6vw,84px);
  line-height:1.02;
  letter-spacing:-.02em;
  margin:0;
}
h1,h2,h3{font-family:var(--font-display);letter-spacing:-.015em;color:var(--mist);}
h2{font-size:clamp(26px,3.4vw,42px);line-height:1.16;margin:0;}
h3{font-size:20px;line-height:1.36;margin:0;}
.lead{
  font-size:clamp(16.5px,1.5vw,20px);
  line-height:1.8;
  color:rgba(234,242,248,.86);
  max-width:56ch;
}
.prose{font-size:16px;line-height:1.9;color:rgba(234,242,248,.8);max-width:70ch;}
.prose p{margin:0 0 1.1em;}
.prose ul,.prose ol{margin:0 0 1.1em;padding-left:1.2em;list-style:disc;}
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.sec-label{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--sand);
}
.sec-label__num{
  display:inline-grid;
  place-items:center;
  min-width:28px;
  height:22px;
  padding:0 8px;
  border-radius:7px;
  border:1px solid rgba(53,242,214,.3);
  background:rgba(53,242,214,.12);
  color:var(--cyan);
  font-size:11px;
  letter-spacing:.06em;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.is-lit .sec-label__num{
  background:var(--cyan);
  border-color:var(--cyan);
  color:var(--ink-900);
}
.note-hand{
  font-size:13px;
  line-height:1.75;
  font-style:italic;
  letter-spacing:.02em;
  color:var(--sand);
}
.note-hand::before{content:"— ";color:rgba(201,183,154,.6);}

/* ---------- 12. 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:999px;
  border:1px solid transparent;
  background:rgba(234,242,248,.08);
  color:rgba(234,242,248,.85);
  font-size:12px;
  letter-spacing:.05em;
  white-space:nowrap;
}
.tag__dot{width:6px;height:6px;border-radius:50%;background:currentColor;flex:none;}
.tag--done{color:var(--green);background:rgba(124,224,163,.12);border-color:rgba(124,224,163,.34);}
.tag--todo{color:var(--ember);background:rgba(255,107,87,.12);border-color:rgba(255,107,87,.34);}
.tag--info{color:var(--cyan);background:rgba(53,242,214,.1);border-color:rgba(53,242,214,.32);}
.tag--price{color:var(--amber);background:rgba(255,154,60,.12);border-color:rgba(255,154,60,.34);}

/* ---------- 13. 展签式信息牌 ---------- */
.plate{
  position:relative;
  padding:clamp(18px,2.2vw,26px);
  border-radius:var(--r-lg);
  border:1px solid rgba(53,242,214,.13);
  background:linear-gradient(160deg, rgba(14,42,71,.72), rgba(14,42,71,.42));
}
.plate--quiet{background:rgba(14,42,71,.34);border-color:rgba(234,242,248,.09);}
.plate__label{
  display:block;
  margin-bottom:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--sand);
}
.plate__title{
  margin:0 0 8px;
  font-family:var(--font-display);
  font-size:clamp(18px,2vw,22px);
  line-height:1.3;
  letter-spacing:-.01em;
}
.plate__text{margin:0;font-size:15px;line-height:1.8;color:rgba(234,242,248,.76);}

/* ---------- 14. Bento 栅格 ---------- */
.bento{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2vw,28px);
}
.bento__cell{grid-column:span 4;min-width:0;}
.bento__cell--narrow{grid-column:span 3;}
.bento__cell--wide{grid-column:span 8;}
.bento__cell--full{grid-column:span 12;}

/* ---------- 15. 图版容器（供页面阶段放图片） ---------- */
.figure{
  position:relative;
  margin:0;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid rgba(53,242,214,.12);
  background:linear-gradient(150deg, rgba(14,42,71,.85), rgba(7,26,47,.9));
}
.figure__img{
  width:100%;
  height:100%;
  object-fit:cover;
  aspect-ratio:16 / 10;
  background:rgba(14,42,71,.6);
}
.figure--wide .figure__img{aspect-ratio:21 / 9;}
.figure--tall .figure__img{aspect-ratio:4 / 5;}
.figure--square .figure__img{aspect-ratio:1 / 1;}
.figure__cap{
  padding:10px 15px;
  border-top:1px solid rgba(53,242,214,.12);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.03em;
  color:rgba(234,242,248,.62);
}

/* ---------- 16. 横向卡带 ---------- */
.band{position:relative;}
.band__track{
  display:flex;
  gap:clamp(14px,2vw,22px);
  overflow-x:auto;
  scroll-snap-type:x proximity;
  padding:4px 2px 18px;
  overscroll-behavior-x:contain;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
  scrollbar-color:rgba(53,242,214,.4) transparent;
}
.band__track::-webkit-scrollbar{height:6px;}
.band__track::-webkit-scrollbar-track{background:rgba(234,242,248,.06);border-radius:99px;}
.band__track::-webkit-scrollbar-thumb{background:rgba(53,242,214,.4);border-radius:99px;}
.band__item{flex:0 0 clamp(240px,64vw,340px);scroll-snap-align:start;min-width:0;}
.band__hint{
  display:block;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.14em;
  color:var(--sand);
}

/* ---------- 17. 折叠面板 ---------- */
.fold{border-top:1px solid rgba(234,242,248,.12);}
.fold:last-child{border-bottom:1px solid rgba(234,242,248,.12);}
.fold__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  padding:16px 2px;
  border:0;
  background:none;
  text-align:left;
  font-size:16px;
  font-weight:600;
  letter-spacing:.01em;
  cursor:pointer;
  transition:color .18s ease;
}
.fold__head:hover{color:var(--cyan);}
.fold__sign{
  position:relative;
  flex:none;
  width:20px;height:20px;
  border-radius:50%;
  border:1px solid rgba(53,242,214,.42);
  transition:background-color .18s ease;
}
.fold__sign::before,
.fold__sign::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  transform:translate(-50%,-50%);
  background:var(--cyan);
  border-radius:2px;
}
.fold__sign::before{width:9px;height:1.5px;}
.fold__sign::after{width:1.5px;height:9px;transition:opacity .18s ease;}
.fold__head[aria-expanded="true"] .fold__sign{background:rgba(53,242,214,.16);}
.fold__head[aria-expanded="true"] .fold__sign::after{opacity:0;}
.fold__body{padding:0 2px 20px;}
.fold__body:not([hidden]){animation:foldIn .22s ease both;}
@keyframes foldIn{from{opacity:0;}to{opacity:1;}}

/* ---------- 18. 筛选 chip ---------- */
.chips{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 15px;
  border-radius:999px;
  border:1px solid rgba(234,242,248,.18);
  background:rgba(14,42,71,.45);
  color:rgba(234,242,248,.8);
  font-family:var(--font-body);
  font-size:13.5px;
  cursor:pointer;
  transition:border-color .18s ease,background-color .18s ease,color .18s ease;
}
.chip:hover{border-color:rgba(53,242,214,.5);color:var(--mist);}
.chip[aria-pressed="true"],
.chip.is-on{
  border-color:var(--cyan);
  background:rgba(53,242,214,.16);
  color:var(--cyan);
}

/* ---------- 19. 页脚 ---------- */
.site-foot{
  margin-top:clamp(52px,9vw,120px);
  border-top:1px solid rgba(53,242,214,.16);
  background:linear-gradient(180deg, rgba(14,42,71,.68), rgba(7,26,47,.97));
}
.site-foot__inner{padding-block:clamp(40px,6vw,72px) 26px;}
.foot-head{
  display:grid;
  grid-template-columns:minmax(220px,1.05fr) 2fr;
  gap:clamp(28px,5vw,72px);
  align-items:start;
}
.foot-brand__name{
  display:inline-block;
  margin-bottom:8px;
  font-family:var(--font-display);
  font-size:26px;
  font-weight:700;
  letter-spacing:-.01em;
  transition:color .18s ease;
}
.foot-brand__name:hover{color:var(--cyan);}
.foot-brand__note{
  margin:0 0 14px;
  font-size:13px;
  line-height:1.75;
  color:rgba(234,242,248,.6);
}
.foot-brand__ver{
  display:inline-block;
  margin:0;
  padding:3px 11px;
  border-radius:999px;
  border:1px dashed rgba(201,183,154,.5);
  font-size:11.5px;
  color:var(--sand);
}
.foot-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(18px,3vw,40px);
}
.foot-col__title{
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--sand);
}
.foot-col__list{display:grid;gap:10px;}
.foot-col__link{
  font-size:14.5px;
  color:rgba(234,242,248,.82);
  transition:color .18s ease;
}
.foot-col__link:hover{color:var(--cyan);}
.foot-contact{
  display:grid;
  gap:9px;
  margin-top:clamp(28px,4vw,48px);
  padding-top:22px;
  border-top:1px dashed rgba(201,183,154,.28);
}
.foot-contact__line{
  margin:0;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.01em;
  color:var(--mist);
}
.foot-contact__note{
  margin:0;
  max-width:78ch;
  font-size:12.5px;
  line-height:1.85;
  color:rgba(234,242,248,.6);
}
.foot-area{
  margin:0;
  font-size:12.5px;
  letter-spacing:.06em;
  color:rgba(53,242,214,.72);
}
.foot-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  margin-top:24px;
  padding-top:18px;
  border-top:1px solid rgba(234,242,248,.1);
  font-size:12.5px;
  color:rgba(234,242,248,.5);
}
.foot-legal p{margin:0;}

/* ---------- 20. 显现 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .5s ease,transform .5s ease;
}
[data-reveal].is-in{opacity:1;transform:none;}

/* ---------- 21. 响应式 ---------- */
@media (max-width:1040px){
  .nav-btn{display:inline-flex;}
  .brand__note,.brand__ver{display:none;}
  .site-head__inner{min-height:64px;padding-block:10px;gap:12px;}
  .brand__mark{width:38px;height:38px;border-radius:11px;font-size:14px;}
  .brand__name{font-size:18px;}

  .nav-band{
    position:fixed;
    left:0;
    right:0;
    bottom:0;
    z-index:90;
    display:block;
    padding:14px var(--gutter) calc(16px + env(safe-area-inset-bottom,0px));
    background:linear-gradient(180deg, rgba(14,42,71,.97), rgba(7,26,47,.995));
    border-top:1px solid rgba(53,242,214,.28);
    box-shadow:0 -20px 44px rgba(3,12,22,.62);
    transform:translateY(114%);
    visibility:hidden;
    transition:transform .28s ease,visibility 0s linear .28s;
  }
  .site-head[data-open] .nav-band,
  .nav-band[data-open]{
    transform:translateY(0);
    visibility:visible;
    transition:transform .28s ease,visibility 0s linear 0s;
  }
  .nav-band__list{
    display:flex;
    gap:8px;
    overflow-x:auto;
    padding-bottom:12px;
    scrollbar-width:none;
    -webkit-overflow-scrolling:touch;
  }
  .nav-band__list::-webkit-scrollbar{display:none;}
  .nav-band__item{flex:0 0 auto;}
  .nav-band__link{
    padding:9px 16px;
    border:1px solid rgba(234,242,248,.16);
    background:rgba(7,26,47,.6);
    font-size:14px;
    white-space:nowrap;
  }
  .nav-band__acts{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:10px;
  }
  .nav-band__acts .btn{padding:12px 14px;font-size:13.5px;}
}

@media (max-width:900px){
  .bento{grid-template-columns:repeat(2,minmax(0,1fr));}
  .bento__cell,
  .bento__cell--narrow,
  .bento__cell--wide,
  .bento__cell--full{grid-column:span 2;}
  .foot-head{grid-template-columns:1fr;}
  .foot-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;}
}

@media (max-width:820px){
  body{font-size:16.5px;}
  .grid--2,.grid--3{grid-template-columns:1fr;}
}

@media (max-width:560px){
  .grid--2,.grid--3,.bento{grid-template-columns:1fr;}
  .bento__cell,
  .bento__cell--narrow,
  .bento__cell--wide,
  .bento__cell--full{grid-column:span 1;}
  .foot-cols{grid-template-columns:1fr;}
  .nav-band__acts{grid-template-columns:1fr;}
  .band__item{flex-basis:min(78vw,300px);}
  .figure--wide .figure__img{aspect-ratio:16 / 10;}
}

/* ---------- 22. 无障碍与动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1;transform:none;}
  .band__track{scroll-behavior:auto;}
}