/* ==========================================================================
   慢造茶叶 · 基础样式
   设计 tokens / reset / 通用组件 (nav, footer, photo, ph)
   ========================================================================== */

:root{
  /* 米白 / 墨绿 / 炭黑 / 茶汤金 — per 调研文档 */
  --rice:#f5f1e8;          /* 米白 */
  --rice-2:#ece6d9;
  --ink:#1a1a1a;           /* 炭黑 */
  --ink-2:#555;
  --ink-3:#8a8680;
  --moss:#1b3a2a;          /* 墨绿 */
  --moss-deep:#0f2519;
  --moss-soft:#dfe5dc;
  --gold:#b58e54;          /* 茶汤金 */
  --hair:rgba(26,26,26,.10);
  --hair-faint:rgba(26,26,26,.05);

  --sans:'PingFang SC','HarmonyOS Sans SC','Hiragino Sans GB','Noto Sans SC','Microsoft YaHei','Inter',sans-serif;
  --serif:'Noto Serif SC','Songti SC','Source Han Serif SC',serif;

  /* spacing scale */
  --pad-page:48px;          /* 容器内边距 — 桌面 */
  --pad-page-md:24px;       /* 平板 */
  --pad-page-sm:20px;       /* 手机 */
}

/* ===== reset ===== */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--rice);
  color:var(--ink);
  font-family:var(--sans);
  font-weight:400;
  font-size:15px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
  font-feature-settings:"palt";
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer}
::selection{background:var(--moss);color:var(--rice)}
/* prevent iOS auto-zoom on focus */
input,textarea,select{font-size:16px}

/* ===== layout containers ===== */
.wrap{max-width:1240px;margin:0 auto;padding:0 var(--pad-page)}
.wrap-tight{max-width:920px;margin:0 auto;padding:0 var(--pad-page)}

/* ===== photo treatment (shared across pages) ===== */
.photo{overflow:hidden;background:var(--rice-2);position:relative}
.photo img{
  width:100%;height:100%;object-fit:cover;
  transition:transform 1.4s cubic-bezier(.2,.6,.2,1);
}
a.photo:hover img{transform:scale(1.04)}

/* image fallback placeholder */
.ph{
  background:linear-gradient(135deg,rgba(27,58,42,.04),rgba(27,58,42,.16)),var(--rice-2);
  display:flex;align-items:center;justify-content:center;
  color:var(--moss);font-family:var(--serif);
  font-size:48px;font-weight:300;letter-spacing:.2em;
  position:relative;
}
.ph::after{content:"慢";position:relative;z-index:2}
.ph::before{
  content:"";position:absolute;inset:24px;
  border:1px solid rgba(27,58,42,.18);
}

/* ===== NAV ===== */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(245,241,232,.93);
  backdrop-filter:saturate(180%) blur(16px);
  -webkit-backdrop-filter:saturate(180%) blur(16px);
  border-bottom:1px solid var(--hair-faint);
}
.nav-inner{
  max-width:1240px;margin:0 auto;
  padding:22px var(--pad-page);
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;gap:40px;
}
.nav-left,.nav-right{display:flex;gap:34px;align-items:center}
.nav-right{justify-content:flex-end}
.nav a.link{
  font-size:13.5px;font-weight:400;color:var(--ink-2);
  letter-spacing:.06em;transition:color .25s;
  padding:8px 0;            /* taller tap target */
}
.nav a.link:hover{color:var(--ink)}
.nav a.link.on{color:var(--moss);font-weight:500}
.brand{
  font-family:var(--serif);font-weight:500;font-size:24px;
  letter-spacing:.34em;color:var(--moss);text-indent:.34em;
}

/* hamburger button — hidden on desktop */
.menu-toggle{
  display:none;
  width:44px;height:44px;
  background:transparent;border:0;
  padding:0;color:var(--moss);
  align-items:center;justify-content:center;
}

/* 搜索按钮 — 桌面在 nav 右侧, 手机替代右侧 spacer */
.search-toggle{
  background:transparent;border:0;cursor:pointer;padding:0;
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-2);transition:color .2s;
}
.search-toggle:hover{color:var(--moss)}
.search-toggle svg{width:18px;height:18px;stroke-width:1.5}
.menu-toggle .bars{
  display:block;position:relative;
  width:22px;height:14px;
}
.menu-toggle .bars::before,
.menu-toggle .bars::after{
  content:"";position:absolute;left:0;right:0;height:1.2px;
  background:currentColor;
  transition:transform .3s,top .3s;
}
.menu-toggle .bars::before{top:0}
.menu-toggle .bars::after{top:13px}
.menu-toggle.open .bars::before{top:6px;transform:rotate(45deg)}
.menu-toggle.open .bars::after{top:6px;transform:rotate(-45deg)}

/* mobile drawer — hidden on desktop */
.mobile-menu{
  display:none;
  position:fixed;
  top:64px;left:0;right:0;
  background:var(--rice);
  border-bottom:1px solid var(--hair);
  padding:8px var(--pad-page-sm) 24px;
  transform:translateY(-110%);
  transition:transform .35s ease;
  z-index:49;
  max-height:calc(100vh - 64px);
  overflow-y:auto;
}
.mobile-menu.open{transform:translateY(0)}
.mobile-menu a{
  display:block;
  padding:18px 4px;
  font-size:16px;
  font-family:var(--sans);
  color:var(--ink);
  border-bottom:1px solid var(--hair-faint);
}
.mobile-menu a:last-child{border-bottom:0}
.mobile-menu a.on{color:var(--moss);font-weight:500}
body.menu-open,body.search-open{overflow:hidden}

/* ===== 搜索遮罩 ===== */
.search-overlay{
  position:fixed;inset:0;z-index:200;
  background:var(--rice);
  opacity:0;visibility:hidden;
  transition:opacity .25s,visibility .25s;
  display:flex;align-items:center;justify-content:center;
  padding:24px;
}
.search-overlay.open{opacity:1;visibility:visible}
.search-close{
  position:absolute;top:20px;right:20px;
  width:44px;height:44px;
  background:transparent;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  color:var(--ink);
}
.search-close svg{width:24px;height:24px;stroke-width:1.5}
.search-content{
  width:100%;max-width:680px;text-align:center;
  margin-top:-40px;          /* 视觉居中, 微调 */
}
.search-label{
  display:block;
  font-size:11px;font-weight:500;
  letter-spacing:.48em;text-transform:uppercase;
  color:var(--moss);margin-bottom:36px;
}
.search-form{
  display:flex;align-items:center;gap:0;
  border-bottom:1.5px solid var(--moss);
  padding-bottom:14px;
}
.search-form input{
  flex:1;background:transparent;border:0;outline:none;
  font-family:var(--serif);font-weight:400;
  font-size:28px;color:var(--ink);padding:8px 0;
  min-width:0;
}
.search-form input::placeholder{color:var(--ink-3);font-weight:300}
.search-form button{
  background:transparent;border:0;color:var(--moss);
  font-family:var(--serif);font-weight:400;
  font-size:24px;cursor:pointer;padding:0 8px;
  min-width:44px;min-height:44px;
}
.search-tags{
  margin-top:48px;display:flex;flex-wrap:wrap;
  align-items:center;justify-content:center;gap:12px;
}
.search-tags .lbl{
  width:100%;
  font-size:11px;font-weight:500;
  letter-spacing:.32em;text-transform:uppercase;
  color:var(--ink-3);margin-bottom:8px;
}
.search-tags a{
  font-family:var(--serif);font-size:14px;color:var(--ink-2);
  padding:8px 14px;
  border:1px solid var(--hair);
  transition:all .2s;
}
.search-tags a:hover{color:var(--moss);border-color:var(--moss)}

/* ===== FOOTER (shared) ===== */
.footer{background:var(--moss-deep);color:#a8b0a8;padding:96px 0 32px;position:relative;z-index:2}
.footer-inner{
  max-width:1240px;margin:0 auto;
  padding:0 var(--pad-page);
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:56px;
}
.footer .brand{color:var(--rice)}
.footer .tag{
  margin-top:18px;font-size:13.5px;line-height:1.95;
  color:#85928a;max-width:300px;font-weight:300;
}
.footer h5{
  font-size:11px;font-weight:500;letter-spacing:.36em;
  color:#85928a;margin-bottom:24px;
}
.footer ul{list-style:none;display:flex;flex-direction:column;gap:12px}
.footer ul a{
  font-size:13.5px;color:#bcc4bd;font-weight:300;
  padding:4px 0;            /* taller tap target */
  display:inline-block;
}
.footer ul a:hover{color:var(--gold)}
.footer-bottom{
  max-width:1240px;margin:64px auto 0;
  padding:24px var(--pad-page) 0;
  border-top:1px solid rgba(255,255,255,.06);
  display:flex;justify-content:space-between;align-items:center;
  font-size:11.5px;color:#6a736b;letter-spacing:.16em;
}
.footer-bottom .dot{width:4px;height:4px;border-radius:50%;background:var(--gold);display:inline-block}

/* ============================================================
   RESPONSIVE — shared (nav + footer + container padding)
   - desktop:   > 980px
   - tablet:    600px–980px
   - phone:     ≤ 600px
   ============================================================ */

/* tablet & mobile */
@media (max-width:980px){
  :root{ --pad-page:var(--pad-page-md); }

  /* nav: hamburger | brand | search */
  .nav-inner{
    padding:14px var(--pad-page-md);
    grid-template-columns:auto 1fr auto;
    gap:12px;
  }
  .nav-left{display:none}
  /* nav-right 保留 search-toggle, 隐藏文字链接 */
  .nav-right{display:flex;justify-content:flex-end;gap:0}
  .nav-right .link{display:none}
  .menu-toggle{display:inline-flex}
  .brand{font-size:21px;justify-self:center}
  .mobile-menu{display:block}

  /* footer becomes 2-col */
  .footer{padding:64px 0 32px}
  .footer-inner{grid-template-columns:1fr 1fr;gap:32px}
  .footer-bottom{
    flex-direction:column;gap:12px;align-items:flex-start;
    margin-top:48px;
  }
}

/* phone */
@media (max-width:600px){
  :root{ --pad-page:var(--pad-page-sm); }

  .nav-inner{padding:12px var(--pad-page-sm)}
  .brand{font-size:19px;letter-spacing:.28em}

  .mobile-menu{top:56px}

  /* 搜索遮罩 — 手机 */
  .search-content{margin-top:0}
  .search-label{margin-bottom:24px;letter-spacing:.36em}
  .search-form input{font-size:22px}
  .search-form button{font-size:20px}
  .search-tags{margin-top:32px;gap:8px}
  .search-tags a{font-size:13px;padding:7px 12px}

  /* 手机端简化 footer — 只保留品牌 + 标语 + 版权 */
  .footer{padding:48px 0 28px;text-align:center}
  .footer-inner{
    grid-template-columns:1fr;gap:0;
  }
  /* 隐藏所有链接分区,只留品牌列 */
  .footer-inner > div:not(:first-child){display:none}
  .footer-inner > div:first-child{
    display:flex;flex-direction:column;align-items:center;
  }
  .footer .brand{font-size:22px}
  .footer .tag{
    max-width:280px;margin:14px auto 0;
    font-size:13px;line-height:1.85;text-align:center;
  }
  .footer-bottom{
    margin-top:36px;padding-top:24px;
    flex-direction:column;align-items:center;gap:8px;
    text-align:center;font-size:10.5px;letter-spacing:.14em;
  }
  .footer-bottom .dot{display:none}
}