/* =========================================================
   Seed Clone — 全站样式
   设计基调：大量留白 / 细分割线 / 大字号标题 / 克制的墨绿
   ========================================================= */

:root{
  --ink:#0F1712;
  --ink-2:#3A443D;
  --muted:#7C867E;
  --line:#E3E6E1;
  --line-2:#F0F2EE;
  --paper:#FFFFFF;
  --paper-2:#F7F8F4;
  --paper-3:#EFF1EA;
  --green:#264F3E;
  --green-2:#3C6B54;
  --accent:#B8C4B4;
  --radius:2px;
  --maxw:1280px;
  --pad:clamp(20px,4vw,56px);
  --sans:"Helvetica Neue",Helvetica,"Inter","Segoe UI",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  --serif:"Times New Roman",Georgia,"Songti SC",serif;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:15px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-weight:500;letter-spacing:-.02em;line-height:1.12;margin:0 0 .5em}
h1{font-size:clamp(34px,5.2vw,64px)}
h2{font-size:clamp(26px,3.4vw,44px)}
h3{font-size:clamp(19px,2vw,26px)}
h4{font-size:17px}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
hr{border:0;border-top:1px solid var(--line);margin:0}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.section{padding:clamp(56px,8vw,120px) 0}
.section--tight{padding:clamp(40px,5vw,72px) 0}
.section--paper{background:var(--paper-2)}
.section--ink{background:var(--ink);color:#fff}
.section--ink a{color:#fff}
.grid{display:grid;gap:clamp(20px,3vw,40px)}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.g2,.g3,.g4{grid-template-columns:1fr}}

.eyebrow{
  font-size:11px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--muted);margin-bottom:14px;display:flex;align-items:center;gap:8px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--green)}
.lead{font-size:clamp(16px,1.5vw,19px);color:var(--ink-2);max-width:62ch}
.muted{color:var(--muted)}
.small{font-size:12.5px}
.center{text-align:center}
.rule{border-top:1px solid var(--line);margin:clamp(32px,5vw,64px) 0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-block;padding:13px 26px;border:1px solid var(--ink);
  background:var(--ink);color:#fff;font-size:12px;letter-spacing:.12em;
  text-transform:uppercase;border-radius:var(--radius);cursor:pointer;
  transition:.25s; font-family:var(--sans);
}
.btn:hover{background:#fff;color:var(--ink)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn--green{background:var(--green);border-color:var(--green)}
.btn--green:hover{background:#fff;color:var(--green)}
.btn--sm{padding:9px 18px;font-size:11px}
.btn--block{display:block;width:100%;text-align:center}

/* ---------- 顶部 ---------- */
.announce{
  background:var(--ink);color:#fff;text-align:center;font-size:11.5px;
  letter-spacing:.12em;text-transform:uppercase;padding:9px 16px;
}
.header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.header__in{display:flex;align-items:center;gap:28px;height:70px}
.logo{font-size:20px;font-weight:600;letter-spacing:-.03em}
.logo span{color:var(--green)}
.nav{display:flex;gap:26px;font-size:13.5px}
.nav a{padding:4px 0;border-bottom:1px solid transparent}
.nav a:hover{border-color:var(--ink)}
.header__right{margin-left:auto;display:flex;align-items:center;gap:18px;font-size:13.5px}
.burger{display:none;background:none;border:0;font-size:22px;cursor:pointer}
@media(max-width:1000px){
  .nav{display:none}
  .burger{display:block}
  .nav.is-open{
    display:flex;flex-direction:column;gap:14px;position:absolute;top:70px;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);padding:20px var(--pad);
  }
}

/* ---------- Hero ---------- */
.hero{padding:clamp(48px,8vw,110px) 0;border-bottom:1px solid var(--line)}
.hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,72px);align-items:center}
@media(max-width:900px){.hero__grid{grid-template-columns:1fr}}
.hero h1{margin-bottom:.35em}
.hero__cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero__media{position:relative;background:var(--paper-3);aspect-ratio:4/5;overflow:hidden}
.hero__media img{width:100%;height:100%;object-fit:cover}
.hero__media video{width:100%;height:100%;object-fit:cover}
.hero__note{
  position:absolute;left:0;bottom:0;background:#fff;padding:14px 20px;
  font-size:11px;letter-spacing:.14em;text-transform:uppercase;
}

/* ---------- 商品卡 ---------- */
.card{border:1px solid var(--line);background:#fff;display:flex;flex-direction:column;transition:.25s}
.card:hover{border-color:var(--ink)}
.card__media{aspect-ratio:1/1;background:var(--paper-3);overflow:hidden;position:relative}
.card__media img{width:100%;height:100%;object-fit:contain;padding:12%}
.card__badge{
  position:absolute;top:12px;left:12px;background:var(--ink);color:#fff;
  font-size:10px;letter-spacing:.14em;text-transform:uppercase;padding:4px 9px;
}
.card__body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1}
.card__code{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.card__name{font-size:17px;font-weight:500}
.card__sub{font-size:13px;color:var(--muted)}
.card__price{margin-top:auto;font-size:14px}
.card__price s{color:var(--muted);margin-left:8px;font-weight:400}

/* ---------- 商品详情 ---------- */
.pdp__grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px)}
@media(max-width:900px){.pdp__grid{grid-template-columns:1fr}}
.pdp__media{background:var(--paper-3);aspect-ratio:1/1;display:grid;place-items:center;padding:8%}
.pdp__media img{max-height:100%;object-fit:contain}
.pdp__video{margin-top:16px}
.pdp__video video{width:100%;background:#000}
.pdp__price{font-size:22px;margin:18px 0}
.bullets li{padding:9px 0;border-bottom:1px solid var(--line-2);display:flex;gap:12px}
.bullets li::before{content:"—";color:var(--green)}

.timeline{display:grid;gap:0;border-top:1px solid var(--line)}
.timeline__row{display:grid;grid-template-columns:150px 1fr;gap:24px;padding:24px 0;border-bottom:1px solid var(--line)}
@media(max-width:700px){.timeline__row{grid-template-columns:1fr;gap:8px}}
.timeline__period{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.timeline__items li{padding:3px 0;font-size:14px}
.timeline__items li::before{content:"· ";color:var(--green)}

.specs{display:grid;gap:0;border-top:1px solid var(--line)}
.specs div{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--line-2);font-size:14px}
.specs span:first-child{color:var(--muted)}

.cmp{width:100%;border-collapse:collapse;font-size:13.5px}
.cmp th,.cmp td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left}
.cmp thead th{font-weight:500;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.cmp tbody th{font-weight:400}

.faq__item{border-bottom:1px solid var(--line)}
.faq__q{width:100%;background:none;border:0;text-align:left;padding:20px 0;font:inherit;cursor:pointer;display:flex;justify-content:space-between;gap:20px}
.faq__a{display:none;padding:0 0 20px;color:var(--ink-2);max-width:70ch}
.faq__item.is-open .faq__a{display:block}

.testgrid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;text-align:center}
@media(max-width:800px){.testgrid{grid-template-columns:repeat(3,1fr)}}
.testgrid img{width:56px;height:56px;margin:0 auto 10px;object-fit:contain}
.testgrid p{font-size:11px;color:var(--muted);margin:0}

/* ---------- 文章 ---------- */
.post-card{display:grid;gap:10px}
.post-card__media{aspect-ratio:16/10;background:var(--paper-3);overflow:hidden}
.post-card__media img{width:100%;height:100%;object-fit:cover}
.post-card__cat{font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--green)}
.post-card__title{font-size:19px;font-weight:500;line-height:1.25}
.post-card__meta{font-size:12px;color:var(--muted)}
.article__body{max-width:70ch;margin:0 auto;font-size:16.5px;line-height:1.85}
.article__body h2{margin-top:1.6em;font-size:26px}
.article__body p{margin-bottom:1.2em}
.article__cover{aspect-ratio:16/9;overflow:hidden;background:var(--paper-3);margin-bottom:36px}
.article__cover img{width:100%;height:100%;object-fit:cover}

/* ---------- 论坛 ---------- */
.board{border:1px solid var(--line);padding:24px;display:flex;flex-direction:column;gap:8px;transition:.2s}
.board:hover{border-color:var(--ink);background:var(--paper-2)}
.board__icon{font-size:22px}
.topic{display:grid;grid-template-columns:44px 1fr auto;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);align-items:center}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--green);color:#fff;
  display:grid;place-items:center;font-size:14px;letter-spacing:0;
}
.topic__title{font-size:16px;font-weight:500}
.topic__meta{font-size:12px;color:var(--muted);margin-top:2px}
.topic__count{font-size:12px;color:var(--muted);white-space:nowrap}
.reply{border:1px solid var(--line);padding:20px;background:#fff}
.reply__meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted);margin-bottom:10px}

/* ---------- 表单 ---------- */
.field{margin-bottom:18px}
.field label{display:block;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:7px}
.input,textarea.input,select.input{
  width:100%;padding:11px 13px;border:1px solid var(--line);background:#fff;
  font:inherit;font-size:14px;border-radius:var(--radius);color:var(--ink);
}
.input:focus{outline:none;border-color:var(--ink)}
textarea.input{min-height:120px;resize:vertical}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}
@media(max-width:700px){.form-grid{grid-template-columns:1fr}}
.alert{padding:12px 16px;border:1px solid var(--line);background:var(--paper-2);font-size:13.5px;margin-bottom:18px}
.alert--ok{border-color:var(--green);background:#F1F6F2}
.alert--err{border-color:#C2604F;background:#FBF1EF}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:#fff;padding:clamp(48px,6vw,80px) 0 32px;margin-top:0}
.footer a{color:rgba(255,255,255,.72)}
.footer a:hover{color:#fff}
.footer__grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:40px}
@media(max-width:800px){.footer__grid{grid-template-columns:1fr 1fr}}
.footer h5{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.5);margin:0 0 14px}
.footer li{margin-bottom:8px;font-size:13.5px}
.footer__bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:16px;font-size:12px;color:rgba(255,255,255,.55);flex-wrap:wrap;
}

/* ---------- 后台 ---------- */
.admin{display:grid;grid-template-columns:230px 1fr;min-height:100vh;background:var(--paper-2)}
.admin__side{background:#fff;border-right:1px solid var(--line);padding:22px 0}
.admin__side h4{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:22px 22px 8px}
.admin__side a{display:block;padding:8px 22px;font-size:14px;border-left:2px solid transparent}
.admin__side a:hover{background:var(--paper-2)}
.admin__side a.is-active{border-color:var(--green);background:var(--paper-2);font-weight:500}
.admin__main{padding:28px 32px 60px}
@media(max-width:900px){.admin{grid-template-columns:1fr}.admin__side{display:none}}
.admin__bar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px;flex-wrap:wrap}
.admin__bar h1{font-size:26px;margin:0}
.panel{background:#fff;border:1px solid var(--line);padding:22px;margin-bottom:22px}
.panel h3{font-size:15px;margin:0 0 16px;display:flex;justify-content:space-between;align-items:center}
.stat{background:#fff;border:1px solid var(--line);padding:20px}
.stat b{display:block;font-size:30px;font-weight:500;line-height:1.1}
.stat span{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.table{width:100%;border-collapse:collapse;font-size:13.5px;background:#fff}
.table th,.table td{padding:10px 12px;border-bottom:1px solid var(--line-2);text-align:left;vertical-align:middle}
.table th{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:500}
.table tr:hover td{background:var(--paper-2)}
.table img.thumb{width:42px;height:42px;object-fit:cover;background:var(--paper-3)}
.tag{display:inline-block;padding:2px 8px;border:1px solid var(--line);font-size:11px;border-radius:20px}
.tag--ok{border-color:var(--green);color:var(--green)}
.tag--warn{border-color:#C28A3F;color:#A8742F}
.tabs{display:flex;gap:0;border-bottom:1px solid var(--line);margin-bottom:22px;flex-wrap:wrap}
.tabs button{
  background:none;border:0;border-bottom:2px solid transparent;padding:10px 16px;
  font:inherit;font-size:13.5px;cursor:pointer;color:var(--muted);
}
.tabs button.is-active{border-color:var(--green);color:var(--ink)}
.tabpane{display:none}
.tabpane.is-active{display:block}
.repeater{border:1px dashed var(--line);padding:14px;margin-bottom:10px;background:var(--paper-2)}
.mediagrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px}
.mediagrid__item{border:1px solid var(--line);background:#fff;overflow:hidden}
.mediagrid__item .m{aspect-ratio:1/1;background:var(--paper-3);display:grid;place-items:center;overflow:hidden}
.mediagrid__item video,.mediagrid__item img{width:100%;height:100%;object-fit:cover}
.mediagrid__item .t{padding:8px 10px;font-size:11.5px;display:flex;justify-content:space-between;gap:8px;align-items:center}
.loginbox{max-width:380px;margin:10vh auto;background:#fff;border:1px solid var(--line);padding:36px}
.loginbox h1{font-size:22px}

/* ---------- 问卷 ---------- */
.quiz{max-width:760px;margin:0 auto}
.quiz__q{border:1px solid var(--line);padding:26px;margin-bottom:18px;background:#fff}
.opt{display:block;border:1px solid var(--line);padding:14px 18px;margin-top:10px;cursor:pointer;transition:.2s}
.opt:hover{border-color:var(--ink)}
.opt input{margin-right:12px}
.opt.is-on{border-color:var(--green);background:#F1F6F2}

.video-box{position:relative;background:#000;aspect-ratio:16/9}
.video-box video{width:100%;height:100%;object-fit:cover}