/* ============================================================
   汀谷玉丰 · 官网 v4
   只用两种颜色：墨绿 #123B2E / 米白 #F7F4EC（含透明度派生）
   无外链字体、无 CDN、无自定义光标、无滚动擦洗
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --green:#123B2E;
  --green-2:#1B4A3A;
  --paper:#F7F4EC;
  --paper-2:#EFE9DD;
  --ink:#123B2E;
  --muted:rgba(18,59,46,.66);
  --line:rgba(18,59,46,.14);
  --line-strong:rgba(18,59,46,.30);
  --on-green:#F7F4EC;
  --on-green-muted:rgba(247,244,236,.70);
  --line-on-green:rgba(247,244,236,.18);
  --maxw:1180px;
  --pad:clamp(20px,4vw,40px);
  --sec:clamp(72px,9vw,120px);
  --r:4px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,monospace;
  /* 固定导航高度，首屏与子页首屏据此留出上边距 */
  --header:76px;
}

/* ---------- 2. 基础重置 ---------- */
*,
*::before,
*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  scroll-padding-top:calc(var(--header) + 16px);
}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

h1,h2,h3,h4,p,dl,dd,figure,blockquote{margin:0;}

ul,ol{margin:0;padding:0;}
li{list-style:none;}

img,
svg,
canvas{display:block;max-width:100%;}
img{height:auto;}

a{color:inherit;text-decoration:none;}

button{font:inherit;color:inherit;}

input,
textarea,
select{font:inherit;}

main{display:block;}

::selection{background:var(--green);color:var(--paper);}

:focus-visible{
  outline:2px solid var(--green);
  outline-offset:3px;
}

.hero :focus-visible,
.page-hero :focus-visible,
.section--green :focus-visible,
.cta-band :focus-visible,
.site-footer :focus-visible,
.nav :focus-visible{outline-color:var(--on-green);}

.site-header.is-scrolled :focus-visible{outline-color:var(--green);}

/* ---------- 3. 版心与工具类 ---------- */
.wrap{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding-left:var(--pad);
  padding-right:var(--pad);
}

.sr-only{
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

/* ---------- 4. 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:60;
  color:var(--on-green);
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}

.site-header.is-scrolled{
  background:var(--paper);
  color:var(--ink);
  border-bottom-color:var(--line);
}

.site-header__inner{
  height:var(--header);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:inherit;
  flex:0 0 auto;
}

.brand__mark{
  width:34px;
  height:34px;
  flex:0 0 auto;
  object-fit:contain;
}

/* 内联 SVG 版 logo 跟随 header 颜色 */
.brand__mark svg,
.brand__mark svg [stroke]{stroke:currentColor;}
.brand__mark svg [fill]:not([fill="none"]){fill:currentColor;}

/* header 默认压在深绿首屏上：统一用米白 mark；滚动后换墨绿 */
.site-header .brand__mark{content:url("../img/tgyf-mark-paper.svg");}
.site-header.is-scrolled .brand__mark{content:url("../img/tgyf-mark-green.svg");}
.site-header .brand__mark--green{display:none;}
.site-header.is-scrolled .brand__mark--green{display:block;}
.site-header.is-scrolled .brand__mark--paper{display:none;}

.brand__text{
  display:flex;
  flex-direction:column;
  line-height:1.05;
  font-size:17px;
  font-weight:600;
  letter-spacing:.06em;
}

.brand__text small{
  margin-top:5px;
  font-size:9px;
  font-weight:500;
  letter-spacing:.18em;
  opacity:.72;
  text-transform:uppercase;
}

.nav{
  display:flex;
  align-items:center;
  gap:clamp(14px,1.8vw,26px);
}

.nav__link{
  position:relative;
  padding:6px 0;
  font-size:14.5px;
  letter-spacing:.02em;
  color:inherit;
  opacity:.86;
  white-space:nowrap;
  transition:opacity .18s ease;
}

.nav__link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:1px;
  height:1px;
  background:currentColor;
  opacity:.5;
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease;
}

.nav__link:hover,
.nav__link:focus-visible,
.nav__link.is-active,
.nav__link[aria-current="page"]{opacity:1;}

.nav__link:hover::after,
.nav__link:focus-visible::after,
.nav__link.is-active::after,
.nav__link[aria-current="page"]::after{transform:scaleX(1);}

.nav__cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:38px;
  padding:0 16px;
  margin-left:4px;
  border:1px solid currentColor;
  border-radius:var(--r);
  font-size:13.5px;
  letter-spacing:.04em;
  white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}

.nav__cta:hover,
.nav__cta:focus-visible{
  background:var(--green);
  color:var(--paper);
  border-color:var(--green);
}

.nav__toggle{
  display:none;
  position:relative;
  width:44px;
  height:44px;
  margin-right:-8px;
  padding:0;
  border:0;
  background:transparent;
  color:inherit;
  cursor:pointer;
}

/* 汉堡图标：两条线 + 中线，展开变 X；若 HTML 写了 span 则隐藏，避免重复 */
.nav__toggle span{display:none;}

.nav__toggle::before,
.nav__toggle::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:22px;
  height:1.5px;
  margin-left:-11px;
  background:currentColor;
  transition:transform .2s ease,box-shadow .2s ease;
}

.nav__toggle::before{
  transform:translateY(-7px);
  box-shadow:0 7px 0 currentColor;
}

.nav__toggle::after{transform:translateY(7px);}

.nav__toggle[aria-expanded="true"]::before{
  transform:translateY(0) rotate(45deg);
  box-shadow:none;
}

.nav__toggle[aria-expanded="true"]::after{
  transform:translateY(0) rotate(-45deg);
}

/* ---------- 5. 首屏 ---------- */
.hero{
  position:relative;
  display:flex;
  align-items:center;
  min-height:min(760px,92vh);
  padding-top:calc(var(--header) + clamp(40px,6vw,72px));
  padding-bottom:clamp(56px,7vw,84px);
  background:var(--green);
  color:var(--on-green);
  overflow:hidden;
}

.hero__inner{
  width:100%;
  position:relative;
  z-index:1;
}

.hero__grid{
  display:grid;
  grid-template-columns:1.02fr .98fr;
  align-items:center;
  gap:clamp(28px,4.5vw,64px);
}

.hero__grid > *{min-width:0;}

.hero__copy{max-width:600px;}

.hero__kicker{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:12px;
  line-height:1.6;
  letter-spacing:.12em;
  color:var(--on-green-muted);
}

.hero__kicker::before{
  content:"";
  flex:0 0 auto;
  width:18px;
  height:1px;
  background:currentColor;
  opacity:.7;
}

.hero__title{
  margin-top:18px;
  font-size:clamp(38px,4.6vw,60px);
  line-height:1.12;
  font-weight:600;
  letter-spacing:.01em;
  text-wrap:balance;
  word-break:keep-all;
  overflow-wrap:anywhere;
}

.hero__lead{
  margin-top:20px;
  max-width:47ch;
  font-size:17px;
  line-height:1.75;
  color:var(--on-green-muted);
  text-wrap:pretty;
}

.hero__facts{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin-top:34px;
  padding-top:22px;
  border-top:1px solid var(--line-on-green);
}

.hero__fact dt{
  font-size:clamp(22px,2.3vw,27px);
  line-height:1.15;
  font-weight:600;
  letter-spacing:.01em;
}

.hero__fact dd{
  margin-top:6px;
  font-size:12px;
  line-height:1.6;
  letter-spacing:.04em;
  color:var(--on-green-muted);
}

.hero__actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:34px;
}

.hero__canvas{
  position:relative;
  height:560px;
  min-width:0;
}

.hero__canvas canvas{
  display:block;
  width:100%;
  height:100%;
}

/* ---------- 6. 按钮与文字链接 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:48px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:var(--r);
  font-size:14.5px;
  font-weight:500;
  line-height:1;
  letter-spacing:.04em;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}

.btn--solid{
  background:var(--green);
  color:var(--on-green);
  border-color:var(--green);
}

.btn--solid:hover,
.btn--solid:focus-visible{background:var(--green-2);border-color:var(--green-2);}

.btn--ghost{
  background:transparent;
  color:var(--ink);
  border-color:var(--line-strong);
}

.btn--ghost:hover,
.btn--ghost:focus-visible{background:rgba(18,59,46,.06);border-color:var(--green);}

.hero .btn--ghost,
.page-hero .btn--ghost,
.section--green .btn--ghost,
.cta-band .btn--ghost{
  color:var(--on-green);
  border-color:var(--line-on-green);
}

.hero .btn--ghost:hover,
.hero .btn--ghost:focus-visible,
.page-hero .btn--ghost:hover,
.page-hero .btn--ghost:focus-visible,
.section--green .btn--ghost:hover,
.section--green .btn--ghost:focus-visible,
.cta-band .btn--ghost:hover,
.cta-band .btn--ghost:focus-visible{
  background:rgba(247,244,236,.08);
  border-color:var(--on-green);
}

.btn--paper{
  background:var(--paper);
  color:var(--green);
  border-color:var(--paper);
}

.btn--paper:hover,
.btn--paper:focus-visible{background:var(--paper-2);border-color:var(--paper-2);}

/* 深色区块里 solid 按钮自动反白，避免绿底绿钮 */
.section--green .btn--solid,
.page-hero .btn--solid,
.cta-band .btn--solid{
  background:var(--paper);
  color:var(--green);
  border-color:var(--paper);
}

.section--green .btn--solid:hover,
.page-hero .btn--solid:hover,
.cta-band .btn--solid:hover{background:var(--paper-2);border-color:var(--paper-2);}

.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:24px;
  padding-bottom:2px;
  font-size:14.5px;
  letter-spacing:.02em;
  color:var(--green);
  border-bottom:1px solid var(--line-strong);
  transition:border-color .18s ease,color .18s ease;
}

.text-link:hover,
.text-link:focus-visible{border-bottom-color:var(--green);}

.section--green .text-link,
.page-hero .text-link{
  color:var(--on-green);
  border-bottom-color:var(--line-on-green);
}

.section--green .text-link:hover,
.page-hero .text-link:hover{border-bottom-color:var(--on-green);}

/* 正文里的裸链接 */
p > a:not([class]){
  color:inherit;
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:3px;
  text-decoration-color:rgba(18,59,46,.35);
}

p > a:not([class]):hover{text-decoration-color:currentColor;}

.section--green p > a:not([class]),
.page-hero p > a:not([class]),
.cta-band p > a:not([class]){
  text-decoration-color:var(--line-on-green);
}

/* ---------- 7. 区块骨架与标题 ---------- */
.section{
  padding-top:var(--sec);
  padding-bottom:var(--sec);
}

.section--paper{
  background:var(--paper);
  color:var(--ink);
}

.section--green{
  background:var(--green);
  color:var(--on-green);
}

.section--tight{
  padding-top:calc(var(--sec) * .62);
  padding-bottom:calc(var(--sec) * .62);
}

/* 两块相邻米白之间给一条极细的分隔 */
.section--paper + .section--paper{border-top:1px solid var(--line);}

.section__head{
  max-width:760px;
  margin-bottom:clamp(30px,4.2vw,52px);
}

.kicker{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:12px;
  line-height:1.6;
  letter-spacing:.12em;
  color:var(--muted);
}

.kicker::before{
  content:"";
  flex:0 0 auto;
  width:18px;
  height:1px;
  background:currentColor;
  opacity:.7;
}

.section--green .kicker,
.page-hero .kicker,
.cta-band .kicker{color:var(--on-green-muted);}

.h2{
  margin-top:12px;
  font-size:clamp(26px,3.2vw,40px);
  line-height:1.26;
  font-weight:600;
  letter-spacing:.01em;
  text-wrap:balance;
  word-break:keep-all;
  overflow-wrap:anywhere;
}

.lead{
  margin-top:16px;
  max-width:62ch;
  font-size:17px;
  line-height:1.75;
  color:var(--muted);
  text-wrap:pretty;
}

.section--green .lead,
.page-hero .lead,
.cta-band .lead{color:var(--on-green-muted);}

/* ---------- 8. 公司简介：左 canvas 右文字 ---------- */
.about-split{
  display:grid;
  grid-template-columns:1fr 1fr;
  align-items:center;
  gap:clamp(28px,4.5vw,64px);
}

.about-split > *{min-width:0;}

.about-split__canvas{
  position:relative;
  height:590px;
}

.about-split__canvas canvas{
  display:block;
  width:100%;
  height:calc(100% - 30px);
}

.about-split__caption{
  margin:4px 0 0;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--muted);
  text-align:center;
}

.about-split__text .h2{margin-top:10px;}

.about-split__text p{
  margin-top:16px;
  font-size:16.5px;
  line-height:1.8;
  color:var(--ink);
  text-wrap:pretty;
}

.about-split__text > p:first-of-type{margin-top:20px;}

.about-split__text .text-link{margin-top:22px;}

.fact-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px 22px;
  margin-top:30px;
}

.fact{
  padding-top:12px;
  border-top:1px solid var(--line-strong);
}

.fact dt{
  font-size:22px;
  line-height:1.25;
  font-weight:600;
  letter-spacing:.01em;
}

.fact dd{
  margin-top:4px;
  font-size:12px;
  line-height:1.6;
  letter-spacing:.04em;
  color:var(--muted);
}

/* ---------- 9. 产品与品种 ---------- */
.products{position:relative;}

.product-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:clamp(16px,2vw,24px);
}

.product-card{
  display:flex;
  flex-direction:column;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r);
  overflow:hidden;
  transition:border-color .2s ease,transform .2s ease;
}

.product-card:hover{
  border-color:var(--line-strong);
  transform:translateY(-2px);
}

.product-card__img{
  position:relative;
  aspect-ratio:4 / 3;
  overflow:hidden;
  background:var(--paper-2);
}

.product-card__img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}

.product-card:hover .product-card__img img{transform:scale(1.025);}

.product-card__img figcaption,
.product-card__img span,
.product-card__tag{
  position:absolute;
  left:10px;
  bottom:10px;
  z-index:1;
  padding:2px 7px;
  background:rgba(247,244,236,.92);
  border:1px solid var(--line);
  border-radius:2px;
  font-size:10.5px;
  line-height:1.7;
  letter-spacing:.08em;
  color:var(--green);
}

.product-card__body{
  display:flex;
  flex-direction:column;
  flex:1 1 auto;
  padding:20px 20px 22px;
}

.product-card__title{
  font-size:19px;
  line-height:1.4;
  font-weight:600;
}

.product-card__desc{
  margin-top:9px;
  font-size:14px;
  line-height:1.72;
  color:var(--muted);
}

.product-card__list{
  display:grid;
  gap:6px;
  margin-top:16px;
}

.product-card__list li{
  position:relative;
  padding-left:14px;
  font-size:13.5px;
  line-height:1.65;
  color:var(--ink);
}

.product-card__list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:6px;
  height:1px;
  background:var(--green);
  opacity:.55;
}

.product-card__link{
  display:inline-flex;
  align-items:center;
  gap:5px;
  margin-top:auto;
  padding-top:18px;
  font-size:13.5px;
  letter-spacing:.02em;
  color:var(--green);
  transition:color .18s ease;
}

.product-card__link:hover,
.product-card__link:focus-visible{color:var(--green-2);text-decoration:underline;text-underline-offset:3px;}

.variety-table{
  width:100%;
  margin-top:clamp(30px,4vw,46px);
  border-collapse:collapse;
  border-spacing:0;
  font-size:14.5px;
  text-align:left;
}

.variety-table th{
  padding:0 12px 10px;
  background:transparent;
  border-bottom:1px solid var(--line-strong);
  font-size:12px;
  font-weight:500;
  line-height:1.6;
  letter-spacing:.1em;
  color:var(--muted);
  white-space:nowrap;
}

.variety-table td{
  padding:14px 12px;
  border-bottom:1px solid var(--line);
  line-height:1.65;
  vertical-align:top;
}

.variety-table td:first-child{font-weight:600;}

.variety-table tbody tr:hover{background:rgba(18,59,46,.03);}

.variety-table__note{
  margin-top:14px;
  max-width:72ch;
  font-size:12.5px;
  line-height:1.75;
  color:var(--muted);
}

/* ---------- 10. 智慧种业：三步 ---------- */
.digital{position:relative;}

.phase-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:clamp(20px,2.6vw,34px);
}

.phase-card{
  padding-top:18px;
  border-top:1px solid var(--line-on-green);
}

.phase-card__no{
  font-family:var(--mono);
  font-size:12px;
  line-height:1.4;
  letter-spacing:.08em;
  color:var(--on-green-muted);
}

.phase-card__time{
  margin-top:8px;
  font-size:12px;
  line-height:1.6;
  letter-spacing:.1em;
  color:var(--on-green-muted);
}

.phase-card h3{
  margin-top:20px;
  font-size:20px;
  line-height:1.4;
  font-weight:600;
}

.phase-card > p:last-of-type{
  margin-top:9px;
  font-size:14.5px;
  line-height:1.78;
  color:var(--on-green-muted);
}

.digital__note{
  margin-top:clamp(28px,3.6vw,44px);
  padding-top:18px;
  border-top:1px solid var(--line-on-green);
  font-size:13px;
  line-height:1.75;
  color:var(--on-green-muted);
}

.digital__note a{
  color:var(--on-green);
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:3px;
  text-decoration-color:var(--line-on-green);
}

.digital__note a:hover{text-decoration-color:var(--on-green);}

/* ---------- 11. 基地与加工 ---------- */
.base-stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:clamp(16px,2vw,28px);
  margin-bottom:clamp(30px,4vw,46px);
}

.base-stat{
  padding-top:14px;
  border-top:1px solid var(--line-strong);
}

.base-stat dt{
  font-size:clamp(22px,2.4vw,28px);
  line-height:1.2;
  font-weight:600;
  letter-spacing:.01em;
}

.base-stat dd{
  margin-top:6px;
  font-size:12px;
  line-height:1.65;
  letter-spacing:.03em;
  color:var(--muted);
}

.base-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:clamp(12px,1.6vw,18px);
}

.photo-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:clamp(12px,1.6vw,18px);
}

.photo{
  background:transparent;
  border-radius:var(--r);
  overflow:hidden;
}

.photo img{
  width:100%;
  aspect-ratio:3 / 2;
  object-fit:cover;
  background:var(--paper-2);
  transition:opacity .3s ease;
}

.photo:hover img{opacity:.94;}

.photo figcaption{
  padding:9px 2px 2px;
  font-size:12px;
  line-height:1.65;
  letter-spacing:.03em;
  color:var(--muted);
}

.base__note{
  margin-top:16px;
  font-size:12.5px;
  line-height:1.75;
  color:var(--muted);
}

/* ---------- 12. 质量与追溯：四步 ---------- */
.quality{position:relative;}

.quality-steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:clamp(16px,2.2vw,28px);
}

.quality-step{
  padding-top:16px;
  border-top:1px solid var(--line-strong);
}

.quality-step span{
  display:block;
  font-family:var(--mono);
  font-size:12px;
  line-height:1.4;
  letter-spacing:.1em;
  color:var(--muted);
}

.quality-step h3{
  margin-top:10px;
  font-size:18px;
  line-height:1.4;
  font-weight:600;
}

.quality-step p{
  margin-top:7px;
  font-size:13.5px;
  line-height:1.72;
  color:var(--muted);
}

/* ---------- 13. 合作与联系 ---------- */
.contact{position:relative;}

.contact .section__head{margin-bottom:clamp(28px,4vw,44px);}

.contact__grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:clamp(18px,2.6vw,36px);
}

.contact__item{
  padding-top:16px;
  border-top:1px solid var(--line-on-green);
}

.contact__item h3{
  font-size:18px;
  line-height:1.4;
  font-weight:600;
}

.contact__item p{
  margin-top:8px;
  font-size:14.5px;
  line-height:1.75;
  color:var(--on-green-muted);
}

.contact__bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 28px;
  margin-top:clamp(32px,4.5vw,52px);
  padding-top:22px;
  border-top:1px solid var(--line-on-green);
  font-size:14px;
  line-height:1.7;
  color:var(--on-green-muted);
}

.contact__bottom a{
  color:var(--on-green);
  border-bottom:1px solid var(--line-on-green);
  padding-bottom:1px;
  transition:border-color .18s ease;
}

.contact__bottom a:hover{border-bottom-color:var(--on-green);}

/* ---------- 14. 页脚 ---------- */
.site-footer{
  padding-top:clamp(44px,6vw,72px);
  padding-bottom:26px;
  background:var(--green);
  color:var(--on-green);
  border-top:1px solid var(--line-on-green);
}

.site-footer__grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.4fr;
  gap:clamp(24px,3vw,48px);
}

.site-footer__grid > *{min-width:0;}

.site-footer .brand{
  align-items:flex-start;
  color:var(--on-green);
}

.site-footer .brand__mark{width:38px;height:38px;content:url("../img/tgyf-mark-paper.svg");}

.site-footer .brand__text{font-size:18px;}

.site-footer .brand__text small{opacity:.6;}

.site-footer__tagline{
  margin-top:16px;
  font-size:13px;
  line-height:1.8;
  color:var(--on-green-muted);
  max-width:30ch;
}

.site-footer h3,
.site-footer h4{
  margin-bottom:14px;
  font-size:12px;
  font-weight:500;
  line-height:1.6;
  letter-spacing:.1em;
  color:var(--on-green-muted);
}

.site-footer ul{
  display:grid;
  gap:8px;
}

.site-footer a{
  font-size:14px;
  line-height:1.7;
  color:var(--on-green);
  opacity:.9;
  transition:opacity .18s ease;
}

.site-footer a:hover,
.site-footer a:focus-visible{
  opacity:1;
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
}

.site-footer p{
  font-size:14px;
  line-height:1.8;
  color:var(--on-green-muted);
}

.site-footer address{
  font-style:normal;
  font-size:14px;
  line-height:1.8;
  color:var(--on-green-muted);
}

.site-footer__bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  margin-top:clamp(32px,4vw,48px);
  padding-top:18px;
  border-top:1px solid var(--line-on-green);
  font-size:12px;
  line-height:1.7;
  color:var(--on-green-muted);
}

.site-footer__bottom a{
  font-size:12px;
  color:var(--on-green-muted);
}

.site-footer__bottom span{color:inherit;}

/* ---------- 15. 子页首屏 ---------- */
.page-hero{
  padding-top:calc(var(--header) + clamp(56px,8vw,92px));
  padding-bottom:clamp(48px,7vw,80px);
  background:var(--green);
  color:var(--on-green);
}

.page-hero__inner{width:100%;}

.page-hero .kicker{margin-bottom:16px;}

.page-hero__title{
  max-width:20ch;
  font-size:clamp(32px,4.4vw,52px);
  line-height:1.16;
  font-weight:600;
  letter-spacing:.01em;
  text-wrap:balance;
  word-break:keep-all;
  overflow-wrap:anywhere;
}

.page-hero__lead{
  margin-top:16px;
  max-width:58ch;
  font-size:17px;
  line-height:1.75;
  color:var(--on-green-muted);
  text-wrap:pretty;
}

/* ---------- 16. 公司简介子页 ---------- */
.profile{padding-top:var(--sec);padding-bottom:var(--sec);}

/* 若 .profile 只是区块内层，垂直留白交给外层 .section */
.section .profile{padding-top:0;padding-bottom:0;}

.profile__grid{
  display:grid;
  grid-template-columns:1.3fr 1fr;
  align-items:start;
  gap:clamp(28px,4vw,64px);
}

.profile__grid > *{min-width:0;}

.profile__text p{
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  text-wrap:pretty;
}

.profile__text p + p{margin-top:16px;}

.profile__text .h2{margin-bottom:20px;}

.profile__facts{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px 20px;
  padding-top:18px;
  border-top:1px solid var(--line-strong);
}

.profile__facts dt{
  font-size:12px;
  line-height:1.6;
  letter-spacing:.04em;
  color:var(--muted);
}

.profile__facts dd{
  margin-top:4px;
  font-size:15px;
  line-height:1.6;
  font-weight:500;
  overflow-wrap:anywhere;
}

/* ---------- 17. 时间线 ---------- */
.timeline{
  position:relative;
  display:grid;
  gap:30px;
  margin-top:clamp(32px,4vw,48px);
  margin-left:4px;
  padding-left:28px;
  border-left:1px solid var(--line);
}

.timeline__item{position:relative;}

.timeline__item::before{
  content:"";
  position:absolute;
  left:-33px;
  top:8px;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--green);
}

.timeline__item time,
.timeline__item .timeline__date{
  display:block;
  margin-bottom:6px;
  font-family:var(--mono);
  font-size:12px;
  line-height:1.5;
  letter-spacing:.06em;
  color:var(--green);
}

.timeline__item h3{
  font-size:18px;
  line-height:1.45;
  font-weight:600;
}

.timeline__item p{
  margin-top:6px;
  max-width:62ch;
  font-size:14.5px;
  line-height:1.75;
  color:var(--muted);
}

/* ---------- 18. 图文分栏（子页） ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  align-items:center;
  gap:clamp(24px,4vw,56px);
}

.split > *{min-width:0;}

.split__media{
  background:var(--paper-2);
  border-radius:var(--r);
  overflow:hidden;
}

.split__media img{
  width:100%;
  aspect-ratio:4 / 3;
  object-fit:cover;
}

.split__media figcaption{
  padding:9px 2px 2px;
  font-size:12px;
  line-height:1.65;
  color:var(--muted);
}

.split__text .h2{margin-bottom:16px;}

.split__text p{
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  text-wrap:pretty;
}

.split__text p + p{margin-top:14px;}

.split__text .text-link{margin-top:20px;}

.split--reverse .split__media{order:2;}
.split--reverse .split__text{order:1;}

/* ---------- 19. 深绿行动条 ---------- */
.cta-band{
  padding-top:clamp(40px,6vw,64px);
  padding-bottom:clamp(40px,6vw,64px);
  background:var(--green);
  color:var(--on-green);
}

.cta-band__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px 40px;
}

.cta-band__inner > *{min-width:0;}

.cta-band h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.3;
  font-weight:600;
  text-wrap:balance;
  word-break:keep-all;
  overflow-wrap:anywhere;
}

.cta-band p{
  margin-top:8px;
  font-size:14.5px;
  line-height:1.75;
  color:var(--on-green-muted);
}

.cta-band__inner .btn{flex:0 0 auto;}

/* ---------- 20. 入场淡入 ---------- */
[data-reveal]{transition:opacity .55s ease,transform .55s ease;}

@media (prefers-reduced-motion:no-preference){
  [data-reveal]:not(.is-in){
    opacity:0;
    transform:translate3d(0,12px,0);
  }
}

/* ---------- 21. 响应式 1024 ---------- */
@media (max-width:1024px){
  :root{
    --header:68px;
    --pad:clamp(18px,4vw,32px);
  }

  /* 导航折叠 */
  .nav{
    position:fixed;
    top:var(--header);
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    max-height:calc(100vh - var(--header));
    padding:6px var(--pad) 22px;
    overflow-y:auto;
    overscroll-behavior:contain;
    background:var(--paper);
    color:var(--ink);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    box-shadow:0 20px 32px rgba(18,59,46,.16);
  }

  .nav.is-open{display:flex;}

  .nav__link{
    padding:15px 2px;
    font-size:16px;
    opacity:.92;
    border-bottom:1px solid var(--line);
  }

  .nav__link::after{display:none;}

  .nav__cta{
    margin:18px 0 0;
    min-height:44px;
    border-color:var(--line-strong);
  }

  .nav__cta:hover,
  .nav__cta:focus-visible{
    background:var(--green);
    color:var(--paper);
    border-color:var(--green);
  }

  .nav :focus-visible{outline-color:var(--green);}

  .nav__toggle{display:block;}

  /* 首屏改为竖排：文字在上，canvas 在下 */
  .hero{
    min-height:0;
    padding-top:calc(var(--header) + clamp(44px,7vw,64px));
    padding-bottom:clamp(48px,7vw,72px);
  }

  .hero__grid{
    grid-template-columns:1fr;
    gap:clamp(26px,4vw,42px);
  }

  .hero__copy{max-width:640px;}

  .hero__canvas{
    height:440px;
    max-width:760px;
    margin-left:auto;
    margin-right:auto;
  }

  /* 公司简介竖排：canvas 在上 */
  .about-split{
    grid-template-columns:1fr;
    gap:clamp(24px,4vw,36px);
  }

  .about-split__canvas{height:440px;}

  .profile__grid{grid-template-columns:1fr;}

  .split{grid-template-columns:1fr;}

  .split--reverse .split__media,
  .split--reverse .split__text{order:0;}

  .site-footer__grid{grid-template-columns:repeat(2,1fr);}

  .cta-band__inner{align-items:flex-start;}
}

/* ---------- 22. 响应式 760 ---------- */
@media (max-width:760px){
  .hero__canvas{height:360px;}

  .about-split__canvas{height:360px;}

  /* 产品三卡改单列 */
  .product-grid{grid-template-columns:1fr;}

  .phase-grid{grid-template-columns:1fr;gap:26px;}

  .phase-card h3{margin-top:14px;}

  .contact__grid{grid-template-columns:1fr;gap:22px;}

  .quality-steps{grid-template-columns:repeat(2,1fr);}

  .base-stats{grid-template-columns:repeat(2,1fr);}

  .photo-grid{grid-template-columns:repeat(2,1fr);}

  .variety-table{font-size:13px;}

  .variety-table th{padding:0 8px 9px;font-size:11px;letter-spacing:.08em;}

  .variety-table td{padding:12px 8px;}

  .contact__bottom{
    flex-direction:column;
    align-items:flex-start;
    gap:8px;
  }

  .cta-band__inner{display:block;}

  .cta-band__inner .btn{margin-top:22px;}
}

/* ---------- 23. 响应式 520 ---------- */
@media (max-width:520px){
  :root{
    --header:64px;
    --pad:20px;
    --sec:64px;
  }

  .hero{padding-top:calc(var(--header) + 40px);padding-bottom:44px;}

  .hero__title{font-size:clamp(30px,9vw,38px);}

  .hero__lead{font-size:16px;}

  .hero__facts{
    grid-template-columns:1fr;
    gap:0;
    margin-top:28px;
    padding-top:0;
    border-top:0;
  }

  .hero__fact{
    display:flex;
    align-items:baseline;
    justify-content:space-between;
    gap:14px;
    padding:12px 0;
    border-top:1px solid var(--line-on-green);
  }

  .hero__fact dt{font-size:20px;}

  .hero__fact dd{margin-top:0;text-align:right;}

  .hero__actions{
    flex-direction:column;
    align-items:stretch;
    margin-top:28px;
  }

  .hero__actions .btn{width:100%;}

  .hero__canvas{height:320px;}

  .about-split__canvas{height:340px;}

  .fact-grid{grid-template-columns:repeat(2,1fr);gap:14px 16px;}

  .fact dt{font-size:19px;}

  .base-stats{grid-template-columns:1fr;gap:0;}

  .base-stat{
    display:flex;
    align-items:baseline;
    justify-content:space-between;
    gap:14px;
    padding:12px 0;
  }

  .base-stat dd{margin-top:0;text-align:right;}

  .quality-steps{grid-template-columns:1fr;gap:22px;}

  .photo-grid{grid-template-columns:1fr;}

  .profile__facts{grid-template-columns:1fr;}

  .site-footer__grid{grid-template-columns:1fr;gap:30px;}

  .site-footer__bottom{
    flex-direction:column;
    align-items:flex-start;
    gap:6px;
  }

  .page-hero{
    padding-top:calc(var(--header) + 48px);
    padding-bottom:48px;
  }

  .page-hero__title{font-size:clamp(28px,8vw,36px);}

  .page-hero__lead{font-size:16px;}

  .variety-table{
    table-layout:fixed;
    font-size:12px;
  }

  .variety-table th,
  .variety-table td{padding:10px 6px;}

  .variety-table th{white-space:normal;}

  .variety-table td:nth-child(2){overflow-wrap:anywhere;}

  .section--tight{
    padding-top:calc(var(--sec) * .72);
    padding-bottom:calc(var(--sec) * .72);
  }

  .contact__bottom{font-size:13px;}

  .digital__note{font-size:12.5px;}
}

/* ---------- 24. 减弱动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }

  [data-reveal]{
    opacity:1 !important;
    transform:none !important;
  }

  .product-card:hover{transform:none;}

  .product-card:hover .product-card__img img{transform:none;}
}