/* ============================================================
   长乐坊 Site Kit · /assets/site.css
   共享层：reset / 变量 / 中文排版 / 浮岛页头 / 街巷页脚 / 通用组件
   ============================================================ */

:root{
  --paper:#F7F1E3;
  --paper-warm:#E8DFCC;
  --ink:#151311;
  --ink-deep:#24201B;
  --cinnabar:#C8342B;
  --cinnabar-dark:#8E1F1A;
  --gilt:#C9A24A;
  --gilt-light:#E7C97A;
  --celadon:#4F7F6E;
  --celadon-mist:#A9C4B8;
  --neutral:#6B645B;
  --cream:#FFF6E8;

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-num:"DIN Alternate","DIN Condensed",ui-monospace,"SFMono-Regular",monospace;

  --wrap:1180px;
  --gap:clamp(16px,2.2vw,28px);
  --radius-s:4px;
  --radius-m:10px;
  --radius-pill:999px;
  --edge:1px solid rgba(21,19,17,.16);
  --edge-gilt:1px solid rgba(201,162,74,.5);
  --shadow-paper:0 1px 0 rgba(21,19,17,.05),0 18px 34px -26px rgba(21,19,17,.55);
}

/* ── reset ───────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
img{height:auto}
a{
  color:var(--cinnabar-dark);
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:.22em;
  text-decoration-color:rgba(142,31,26,.45);
  transition:color .2s ease,text-decoration-color .2s ease;
}
a:hover{color:var(--cinnabar);text-decoration-color:var(--cinnabar)}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
:focus-visible{outline:2px solid var(--celadon);outline-offset:3px;border-radius:2px}

/* ── 中文排版与基础工具 ───────────────────────────────────── */
.wrap{width:min(var(--wrap),calc(100% - clamp(28px,7vw,80px)));margin-inline:auto}
.section{padding-block:clamp(44px,7vw,96px)}
.section--tight{padding-block:clamp(26px,4vw,52px)}
.band-ink{background:var(--ink-deep);color:rgba(247,241,227,.86)}
.band-ink .display-title,.band-ink .section-title,.band-ink h1,.band-ink h2,.band-ink h3{color:var(--paper)}
.band-warm{background:var(--paper-warm)}

.eyebrow{
  display:inline-flex;align-items:center;gap:.6em;
  font-size:12px;font-weight:700;letter-spacing:.24em;
  color:var(--cinnabar-dark);
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--gilt);flex:none}
.band-ink .eyebrow{color:var(--gilt-light)}

.display-title{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(2.1rem,5.4vw,4.2rem);
  line-height:1.06;
  letter-spacing:-.012em;
  color:var(--ink);
}
.section-title{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(1.6rem,3.2vw,2.5rem);
  line-height:1.18;
  letter-spacing:-.005em;
  color:var(--ink);
}
.lede{
  font-size:clamp(1rem,1.35vw,1.14rem);
  line-height:1.86;
  color:#3B352D;
  max-width:62ch;
}
.band-ink .lede{color:rgba(247,241,227,.78)}

.rule{
  height:1px;border:0;margin-block:clamp(22px,3.6vw,44px);
  background:linear-gradient(90deg,var(--gilt),rgba(21,19,17,.12));
}
.band-ink .rule{background:linear-gradient(90deg,var(--gilt),rgba(231,201,122,.08))}

.stack{display:grid;gap:clamp(14px,2vw,22px)}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px}
.visually-hidden{
  position:absolute;width:1px;height:1px;margin:-1px;padding:0;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

.grid{display:grid;gap:var(--gap)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--split{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr)}
@media (max-width:960px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--split{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:640px){
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
}

/* ── 面包屑 ──────────────────────────────────────────────── */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:.5em;
  font-size:13px;color:var(--neutral);
  padding-top:clamp(16px,2.6vw,28px);
}
.breadcrumb a{
  color:var(--neutral);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.breadcrumb a:hover{color:var(--cinnabar-dark);border-bottom-color:var(--cinnabar-dark)}
.crumb-sep{color:var(--gilt);font-family:var(--font-num)}
.breadcrumb [aria-current="page"]{color:var(--ink)}

/* ── 按钮 ────────────────────────────────────────────────── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:11px 20px;
  border:1px solid transparent;
  border-radius:var(--radius-pill);
  font-size:14.5px;font-weight:700;letter-spacing:.06em;
  text-decoration:none;white-space:nowrap;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn--primary{
  background:var(--cinnabar);color:var(--cream);
  box-shadow:0 8px 18px -12px rgba(200,52,43,.95);
}
.btn--primary:hover{background:var(--cinnabar-dark);color:var(--cream);transform:translateY(-1px)}
.btn--ghost{
  background:transparent;color:var(--gilt-light);
  border-color:rgba(201,162,74,.55);
}
.btn--ghost:hover{background:rgba(201,162,74,.14);border-color:var(--gilt-light);color:#FFF9EC}
.btn--ink{background:var(--ink);color:var(--paper)}
.btn--ink:hover{background:var(--cinnabar-dark);color:var(--cream)}

/* ── 印章标签 ────────────────────────────────────────────── */
.tag{
  display:inline-flex;align-items:center;gap:.45em;
  padding:5px 11px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:700;letter-spacing:.12em;
  border:1px solid transparent;white-space:nowrap;
}
.tag--gilt{color:var(--gilt-light);border-color:rgba(201,162,74,.5);background:rgba(201,162,74,.1)}
.tag--quarter{color:var(--cinnabar-dark);border-color:rgba(200,52,43,.34);background:rgba(200,52,43,.08)}
.tag--celadon{color:#EAF6F0;border-color:rgba(169,196,184,.45);background:rgba(79,127,110,.85)}
.tag--paper{color:var(--ink);border-color:var(--edge);background:var(--paper)}

/* ── 浮岛页头 ────────────────────────────────────────────── */
.site-header{
  position:sticky;top:0;z-index:60;
  padding:clamp(10px,1.4vw,16px) 0 0;
}
.scroll-meter{
  position:fixed;top:0;left:0;right:0;height:3px;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cinnabar) 0%,var(--gilt) 60%,var(--gilt-light) 100%);
  z-index:80;pointer-events:none;
}
.skip-link{
  position:fixed;top:10px;left:12px;z-index:200;
  padding:10px 18px;
  background:var(--ink);color:var(--paper);
  border:1px solid var(--gilt);border-radius:var(--radius-pill);
  font-size:14px;text-decoration:none;
  transform:translateY(-180%);
  transition:transform .2s ease;
}
.skip-link:focus-visible{transform:none;color:var(--cream)}

.header-shell{
  position:relative;
  display:flex;align-items:center;
  gap:clamp(10px,1.6vw,22px);
  width:min(var(--wrap),calc(100% - clamp(24px,6vw,80px)));
  margin-inline:auto;
  padding:9px 10px 9px 14px;
  background:var(--ink-deep);
  border:1px solid rgba(201,162,74,.42);
  border-radius:var(--radius-pill);
  box-shadow:0 18px 36px -24px rgba(21,19,17,.9),inset 0 1px 0 rgba(231,201,122,.14);
}

/* 品牌 */
.brand{
  display:inline-flex;align-items:center;gap:11px;
  flex:none;text-decoration:none;color:var(--paper);
}
.brand:hover{color:var(--paper)}
.brand-seal{
  display:grid;place-items:center;flex:none;
  width:38px;height:38px;
  background:var(--cinnabar);color:var(--cream);
  font-family:var(--font-display);font-weight:900;font-size:20px;line-height:1;
  border-radius:3px;
  box-shadow:inset 0 0 0 1px rgba(231,201,122,.62),0 6px 14px -10px rgba(0,0,0,.9);
}
.brand-text{display:grid;line-height:1.15;gap:2px}
.brand-line{
  font-family:var(--font-display);font-weight:800;
  font-size:17.5px;letter-spacing:.1em;color:var(--paper);
}
.brand-sub{
  font-size:10.5px;letter-spacing:.26em;
  color:var(--gilt);text-transform:none;
}

/* 导航 */
.nav-cluster{
  display:flex;align-items:center;
  gap:clamp(6px,1.2vw,18px);
  margin-left:auto;
}
.capsule-nav{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;display:inline-block;
  padding:9px 13px;border-radius:var(--radius-pill);
  font-size:14.5px;letter-spacing:.02em;white-space:nowrap;
  color:rgba(247,241,227,.76);text-decoration:none;
  transition:color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.nav-link:hover{color:var(--gilt-light);background:rgba(231,201,122,.1)}
.nav-link[aria-current="page"]{
  color:var(--cream);
  background:rgba(201,162,74,.18);
  box-shadow:inset 0 0 0 1px rgba(201,162,74,.48);
}
.nav-link[aria-current="page"]::after{
  content:"";position:absolute;left:50%;bottom:3px;
  width:5px;height:5px;margin-left:-2.5px;border-radius:50%;
  background:var(--cinnabar);
}
.nav-actions{display:flex;align-items:center;gap:8px}

/* 汉堡 */
.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 15px;border-radius:var(--radius-pill);
  border:1px solid rgba(201,162,74,.5);
  color:var(--gilt-light);
  font-size:13.5px;letter-spacing:.14em;
  transition:background-color .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:rgba(201,162,74,.14);border-color:var(--gilt-light)}
.nav-toggle-bars{display:grid;gap:4px;width:16px;flex:none}
.nav-toggle-bars span{
  display:block;height:1.5px;background:currentColor;border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(2.75px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2){transform:translateY(-2.75px) rotate(-45deg)}

@media (max-width:1100px){
  .nav-toggle{display:inline-flex;margin-left:auto}
  .nav-cluster{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;
    gap:14px;margin-left:0;padding:18px;
    background:var(--ink-deep);
    border:1px solid rgba(201,162,74,.45);
    border-radius:22px;
    box-shadow:0 26px 44px -26px rgba(21,19,17,.95);
  }
  .nav-cluster[data-open="true"]{display:flex}
  .capsule-nav{flex-direction:column;align-items:stretch;gap:2px}
  .nav-link{display:block;padding:12px 14px;font-size:15.5px;border-radius:12px}
  .nav-link[aria-current="page"]::after{left:auto;right:16px;bottom:50%;margin:0 0 -2.5px 0}
  .nav-actions{flex-direction:column;align-items:stretch;gap:10px}
  .nav-actions .btn{justify-content:center}
}
@media (max-width:520px){
  .brand-sub{display:none}
  .brand-line{font-size:16px}
  .brand-seal{width:34px;height:34px;font-size:18px}
}

/* ── 街巷页脚 ────────────────────────────────────────────── */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,104px);
  background:var(--ink-deep);
  color:rgba(247,241,227,.78);
}
.footer-eave{
  height:20px;
  background-image:
    radial-gradient(circle at 50% 0,var(--gilt-light) 0 2.5px,transparent 2.6px),
    linear-gradient(180deg,var(--gilt) 0 2px,transparent 2px);
  background-repeat:repeat-x,no-repeat;
  background-size:42px 20px,100% 2px;
}
.footer-inner{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1.55fr);
  gap:clamp(28px,4vw,54px);
  padding-block:clamp(34px,5vw,64px) clamp(26px,4vw,44px);
}
.footer-brand{display:grid;gap:18px;align-content:start}
.brand--footer .brand-line{font-size:19px}
.footer-blurb{
  font-size:14.5px;line-height:1.85;
  color:rgba(247,241,227,.66);max-width:34ch;
}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}

.footer-cols{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(18px,3vw,32px);
}
.footer-col{display:grid;gap:12px;align-content:start}
.footer-col-title{
  font-family:var(--font-display);font-weight:800;
  font-size:15px;letter-spacing:.16em;color:var(--paper);
  display:flex;align-items:center;gap:.6em;
}
.footer-col-title::before{content:"";width:6px;height:6px;background:var(--cinnabar);border-radius:1px;flex:none}
.footer-links{display:grid;gap:9px}
.footer-link{
  display:inline-block;
  font-size:14px;letter-spacing:.02em;
  color:rgba(247,241,227,.72);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer-link:hover{color:var(--gilt-light);border-bottom-color:var(--gilt)}

.footer-contact{
  grid-column:1 / -1;
  display:grid;gap:14px;
  padding-top:clamp(20px,3vw,32px);
  border-top:1px solid rgba(201,162,74,.22);
}
.contact-list{display:grid;gap:0}
.contact-item{
  display:grid;grid-template-columns:auto minmax(0,1fr) auto;
  align-items:baseline;gap:6px 16px;
  padding-block:11px;
  border-bottom:1px dashed rgba(201,162,74,.2);
}
.contact-label{
  font-size:11.5px;letter-spacing:.2em;color:var(--gilt);
  font-weight:700;
}
.contact-value{
  font-size:15px;color:rgba(247,241,227,.92);
  word-break:break-word;font-family:var(--font-body);
}
.copy-btn{
  font-size:11.5px;letter-spacing:.12em;
  padding:3px 11px;border-radius:var(--radius-pill);
  border:1px solid rgba(201,162,74,.45);
  color:var(--gilt-light);
  transition:background-color .2s ease,border-color .2s ease,color .2s ease;
}
.copy-btn:hover{background:rgba(201,162,74,.16);border-color:var(--gilt-light);color:#FFF9EC}
.copy-status{
  grid-column:2 / -1;
  font-size:12px;letter-spacing:.06em;color:var(--celadon-mist);
  min-height:0;
}
.copy-status:empty{display:none}
.contact-note{
  font-size:12.5px;line-height:1.8;color:rgba(247,241,227,.55);
  max-width:74ch;
}

.footer-base{border-top:1px solid rgba(201,162,74,.2)}
.footer-base-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px 26px;
  padding-block:18px 26px;
  font-size:12.5px;
  color:rgba(247,241,227,.58);
}
.footer-copy{letter-spacing:.02em}
.footer-icp{color:rgba(247,241,227,.48)}
.footer-base-links{display:flex;flex-wrap:wrap;gap:8px 20px}
.footer-base-links .footer-link{font-size:12.5px;color:rgba(247,241,227,.62)}

.to-top{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--radius-pill);
  border:1px solid rgba(201,162,74,.4);
  color:var(--gilt-light);
  font-size:12px;letter-spacing:.16em;
  opacity:.55;
  transition:opacity .25s ease,background-color .25s ease,border-color .25s ease;
}
.to-top[data-visible="true"]{opacity:1}
.to-top:hover{background:rgba(201,162,74,.16);border-color:var(--gilt-light);opacity:1}

.quick-ios{display:none}

@media (max-width:900px){
  .footer-inner{grid-template-columns:minmax(0,1fr)}
  .footer-blurb{max-width:52ch}
}
@media (max-width:640px){
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-base-inner{padding-bottom:96px}
  .contact-item{grid-template-columns:auto minmax(0,1fr);gap:4px 12px}
  .copy-btn{grid-column:2;justify-self:start;margin-top:2px}
  .copy-status{grid-column:2}
  .quick-ios{
    position:fixed;left:16px;right:16px;bottom:14px;z-index:55;
    display:flex;align-items:center;justify-content:center;
    padding:13px 18px;border-radius:var(--radius-pill);
    background:var(--celadon);color:#F4FBF7;
    font-size:14.5px;font-weight:700;letter-spacing:.06em;
    text-decoration:none;
    border:1px solid rgba(231,201,122,.5);
    box-shadow:0 16px 32px -14px rgba(21,19,17,.8);
    transition:background-color .2s ease,transform .2s ease;
  }
  .quick-ios:hover{background:#43705F;color:#F4FBF7;transform:translateY(-1px)}
}

/* ── 图版容器（页面阶段放图用） ──────────────────────────── */
.figure{margin:0;display:grid;gap:10px}
.frame{
  position:relative;overflow:hidden;isolation:isolate;
  border:1px solid rgba(21,19,17,.16);
  border-radius:var(--radius-m);
  background:var(--paper-warm);
  box-shadow:var(--shadow-paper);
}
.frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  border-radius:inherit;
  box-shadow:inset 0 0 0 1px rgba(201,162,74,.34);
}
.frame img{width:100%;height:100%;object-fit:cover}
.frame--16x9{aspect-ratio:16/9}
.frame--4x3{aspect-ratio:4/3}
.frame--1x1{aspect-ratio:1/1}
.frame--tall{aspect-ratio:3/4}
.frame--blank{
  background-image:repeating-linear-gradient(135deg,rgba(21,19,17,.055) 0 12px,transparent 12px 24px);
}
.figure-caption{
  font-size:13px;line-height:1.72;letter-spacing:.02em;color:var(--neutral);
}
.figure-tag{
  display:inline-flex;align-items:center;gap:.45em;
  font-size:11.5px;font-weight:700;letter-spacing:.16em;
  color:var(--celadon);
}
.figure-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--celadon)}
.band-ink .frame{border-color:rgba(201,162,74,.3);background:#2C2721}
.band-ink .figure-caption{color:rgba(247,241,227,.6)}
.band-ink .figure-tag{color:var(--celadon-mist)}
.band-ink .figure-tag::before{background:var(--celadon-mist)}

/* ── 摊位索引卡 ──────────────────────────────────────────── */
.stall{
  position:relative;display:flex;flex-direction:column;gap:10px;
  padding:clamp(18px,2.4vw,26px);
  background:var(--paper);
  border:var(--edge);
  border-radius:var(--radius-m);
  color:inherit;text-decoration:none;
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.stall::before{
  content:"";position:absolute;top:0;left:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--cinnabar),var(--gilt));
  border-radius:var(--radius-m) var(--radius-m) 0 0;
  transition:width .35s ease;
}
.stall:hover{
  border-color:rgba(201,162,74,.7);
  transform:translateY(-2px);
  box-shadow:0 22px 38px -30px rgba(21,19,17,.85);
}
.stall:hover::before{width:100%}
.stall__num{
  font-family:var(--font-num);font-size:13px;letter-spacing:.2em;
  color:var(--cinnabar-dark);
}
.stall__title{
  font-family:var(--font-display);font-weight:800;
  font-size:1.16rem;line-height:1.35;letter-spacing:.01em;color:var(--ink);
}
.stall__meta{font-size:13.5px;line-height:1.7;color:var(--neutral)}
.stall__dot{
  display:inline-block;width:7px;height:7px;border-radius:50%;
  background:var(--celadon);margin-right:.5em;vertical-align:middle;
}
.band-ink .stall{background:#2C2721;border-color:rgba(201,162,74,.26);color:rgba(247,241,227,.86)}
.band-ink .stall__title{color:var(--paper)}
.band-ink .stall__meta{color:rgba(247,241,227,.6)}
.band-ink .stall__num{color:var(--gilt-light)}

/* ── 步骤卡 ──────────────────────────────────────────────── */
.step{
  position:relative;display:grid;gap:12px;align-content:start;
  padding:clamp(20px,2.6vw,28px);
  background:var(--paper);
  border:var(--edge);
  border-radius:var(--radius-m);
  transition:border-color .25s ease,box-shadow .25s ease;
}
.step:hover{border-color:rgba(201,162,74,.65);box-shadow:0 20px 36px -30px rgba(21,19,17,.8)}
.step__badge{
  display:grid;place-items:center;
  width:36px;height:36px;border-radius:50%;
  background:var(--cinnabar);color:var(--cream);
  font-family:var(--font-num);font-weight:700;font-size:15px;letter-spacing:.04em;
  box-shadow:0 0 0 3px rgba(201,162,74,.32);
}
.step__title{
  font-family:var(--font-display);font-weight:800;
  font-size:1.12rem;line-height:1.4;color:var(--ink);
}
.step__text{font-size:14.5px;line-height:1.8;color:var(--neutral)}
.band-ink .step{background:#2C2721;border-color:rgba(201,162,74,.26)}
.band-ink .step__title{color:var(--paper)}
.band-ink .step__text{color:rgba(247,241,227,.65)}

/* ── 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;
    scroll-behavior:auto !important;
  }
}