/* ==========================================================================
   SUNHE ENERGY — English Corporate Website
   Design System / style.css  (static, no framework, fully offline)
   Palette: Emerald brand green + deep navy slate (aligned with brand site)
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root{
  --brand:#0aa06e;
  --brand-600:#059669;
  --brand-700:#047857;
  --brand-050:#ecfdf5;
  --brand-100:#d1fae5;
  --ink:#0b1526;
  --body-c:#425466;
  --muted:#7b8a9d;
  --dark:#071120;
  --dark-2:#0c1a2e;
  --dark-3:#12233c;
  --line:#e6ebf1;
  --bg:#ffffff;
  --bg-soft:#f5f8fa;
  --shadow-sm:0 1px 3px rgba(11,21,38,.08);
  --shadow-md:0 8px 24px -8px rgba(11,21,38,.16);
  --shadow-lg:0 24px 48px -16px rgba(11,21,38,.22);
  --radius:14px;
  --radius-lg:20px;
  --container:1600px;
  --header-h:76px;
  --topbar-h:40px;
  --font:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
}

/* ---------- Inline icon utility ---------- */
svg.i{width:1.05em;height:1.05em;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;vertical-align:-0.16em;flex-shrink:0}

/* ---------- Reset & base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);color:var(--body-c);background:var(--bg);
  font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-700)}
h1,h2,h3,h4,h5{color:var(--ink);line-height:1.25;margin:0 0 .5em;font-weight:800;letter-spacing:-.01em}
h1{font-size:2.4rem}
h2{font-size:1.9rem}
h3{font-size:1.25rem}
h4{font-size:1.05rem}
p{margin:0 0 1em}
ul{margin:0;padding:0}
strong{color:var(--ink)}
::selection{background:var(--brand);color:#fff}

.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--soft{background:var(--bg-soft)}
.section--dark{background:linear-gradient(135deg,var(--dark) 0%,#0a2233 60%,#06281e 100%);color:#cbd5e1}
.section--dark h2,.section--dark h3,.section--dark h4{color:#fff}
.section--dark p{color:#9fb0c3}
.section--tight{padding:56px 0}

.section-head{max-width:760px;margin:0 auto 52px;text-align:center}
.section-head--left{margin-left:0;text-align:left}
.kicker{
  display:inline-block;font-size:.78rem;font-weight:800;letter-spacing:.22em;
  text-transform:uppercase;color:var(--brand-600);margin-bottom:14px;
}
.section--dark .kicker{color:#34d399}
.section-head h2{margin-bottom:14px}
.section-head .lead{color:var(--muted);font-size:1.02rem;margin:0}
.section--dark .section-head .lead{color:#9fb0c3}
.head-rule{width:64px;height:4px;border-radius:4px;background:linear-gradient(90deg,var(--brand),#2dd4bf);margin:18px auto 0}
.section-head--left .head-rule{margin-left:0}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 28px;border-radius:10px;font-weight:700;font-size:.95rem;
  border:2px solid transparent;cursor:pointer;transition:all .25s ease;line-height:1.2;
}
.btn svg{width:18px;height:18px}
.btn--primary{background:linear-gradient(135deg,var(--brand-600),#0d9488);color:#fff;box-shadow:0 8px 20px -8px rgba(5,150,105,.55)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 14px 28px -10px rgba(5,150,105,.6);color:#fff}
.btn--ghost{border-color:var(--brand-600);color:var(--brand-600);background:transparent}
.btn--ghost:hover{background:var(--brand-600);color:#fff}
.btn--light{background:#fff;color:var(--ink)}
.btn--light:hover{background:var(--brand-050);color:var(--brand-700)}
.btn--outline-light{border-color:rgba(255,255,255,.7);color:#fff}
.btn--outline-light:hover{background:#fff;color:var(--ink)}
.btn--lg{padding:16px 36px;font-size:1rem}

/* ---------- Top utility bar ---------- */
.topbar{background:var(--dark);color:#94a3b8;font-size:.82rem}
.topbar__inner{display:flex;justify-content:space-between;align-items:center;height:var(--topbar-h);gap:16px}
.topbar__group{display:flex;align-items:center;gap:22px}
.topbar a{color:#cbd5e1;display:inline-flex;align-items:center;gap:7px}
.topbar a:hover{color:#34d399}
.topbar svg{width:14px;height:14px;color:var(--brand)}

/* ---------- Header / Navigation ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
  transition:box-shadow .3s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-md)}
.site-header .container{max-width:1600px}
.header__inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:16px}
.brand{display:flex;align-items:center;flex-shrink:0}
.brand img{height:44px;width:auto}
.nav{display:flex;align-items:center;gap:4px}
.nav__item{position:relative}
.nav__link{
  display:flex;align-items:center;gap:5px;padding:10px 13px;font-size:.92rem;
  font-weight:600;color:#334155;border-radius:8px;white-space:nowrap;
}
.nav__link svg{width:13px;height:13px;opacity:.6;transition:transform .25s}
.nav__link:hover{color:var(--brand-600);background:var(--brand-050)}
.nav__item.is-active>.nav__link{color:var(--brand-600)}
.nav__item.is-active>.nav__link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  background:var(--brand-600);border-radius:2px;
}
.dropdown__panel{
  position:absolute;top:100%;left:50%;transform:translate(-50%,12px);
  min-width:260px;background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:0 24px 48px -16px rgba(2,44,34,.18);padding:10px;opacity:0;visibility:hidden;
  transition:all .28s ease;z-index:99;
}
.dropdown__panel::before{
  content:"";position:absolute;top:-1px;left:20px;right:20px;height:3px;border-radius:0 0 4px 4px;
  background:linear-gradient(90deg,var(--brand-600),#34d399);
}
.dropdown__panel::after{
  content:"";position:absolute;top:-6px;left:50%;transform:translateX(-50%) rotate(45deg);
  width:11px;height:11px;background:#fff;border-left:1px solid var(--line);border-top:1px solid var(--line);
}
.dropdown__panel--wide{min-width:560px;display:grid;grid-template-columns:1fr 1fr;gap:2px 8px}
.nav__item:hover .dropdown__panel,.nav__item:focus-within .dropdown__panel{
  opacity:1;visibility:visible;transform:translate(-50%,4px);
}
.nav__item:hover .nav__link svg{transform:rotate(180deg)}
/* 面板链接：按元素选择器兜底（模板中 a 未带 .dropdown__link 类也能生效） */
.dropdown__panel>a,.dropdown__link{
  display:block;padding:10px 14px;border-radius:10px;font-size:.9rem;font-weight:600;
  color:#334155;line-height:1.4;transition:all .2s ease;
}
.dropdown__panel>a:hover,.dropdown__link:hover{
  background:linear-gradient(90deg,var(--brand-050),rgba(16,185,129,0));color:var(--brand-700);
  transform:translateX(4px);
}
.dropdown__panel>a .hint,.dropdown__link span.hint{
  display:block;font-weight:400;font-size:.76rem;color:var(--muted);margin-top:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.lang-btn{
  display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border:1.5px solid var(--brand-600);
  border-radius:8px;font-size:.85rem;font-weight:700;color:var(--brand-600);
}
.lang-btn:hover{background:var(--brand-050)}
.btn-quote{padding:10px 20px;font-size:.88rem;border-radius:8px}
.burger{
  display:none;background:none;border:0;cursor:pointer;padding:8px;color:var(--ink);
}
.burger svg{width:26px;height:26px}

/* ---------- Mobile drawer ---------- */
.mobile-menu{
  display:none;position:fixed;inset:0;z-index:200;background:rgba(7,17,32,.5);
  opacity:0;pointer-events:none;transition:opacity .3s ease;
}
.mobile-menu.is-open{display:block;opacity:1;pointer-events:auto}
.mobile-menu__panel{
  position:absolute;top:0;right:0;bottom:0;width:min(360px,88vw);background:#fff;
  overflow-y:auto;padding:20px;transform:translateX(100%);transition:transform .35s ease;
}
.mobile-menu.is-open .mobile-menu__panel{transform:translateX(0)}
.mm-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.mm-head img{height:38px}
.mm-close{background:none;border:0;cursor:pointer;color:var(--ink);padding:6px}
.mm-close svg{width:24px;height:24px}
.mm-group{border-bottom:1px dashed var(--line)}
.mm-toggle{
  width:100%;display:flex;justify-content:space-between;align-items:center;
  padding:15px 4px;background:none;border:0;font-size:1rem;font-weight:700;
  color:var(--ink);cursor:pointer;font-family:var(--font);
}
.mm-toggle svg{width:16px;height:16px;color:var(--brand-600);transition:transform .3s}
.mm-group.is-open .mm-toggle svg{transform:rotate(45deg)}
.mm-sub{max-height:0;overflow:hidden;transition:max-height .35s ease}
.mm-group.is-open .mm-sub{max-height:640px}
.mm-sub a{display:block;padding:10px 12px 10px 18px;border-left:2px solid var(--brand-100);margin-left:6px;font-size:.93rem;color:#475569;font-weight:600}
.mm-sub a:hover{color:var(--brand-600);border-left-color:var(--brand-600)}
.mm-cta{display:flex;flex-direction:column;gap:10px;margin-top:18px}

/* ---------- Hero (home) ---------- */
.hero{position:relative;height:640px;background:var(--dark);overflow:hidden}
.hero__slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity 1s ease,visibility 1s}
.hero__slide.is-active{opacity:1;visibility:visible}
.hero__bg{position:absolute;inset:0}
.hero__bg img{width:100%;height:100%;object-fit:cover;opacity:.38}
.hero__shade{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,17,32,.92) 8%,rgba(7,17,32,.55) 55%,rgba(6,40,30,.35) 100%);
}
.hero__content{position:relative;z-index:2;height:100%;display:flex;align-items:center}
/* 修复：container 自带的 margin:0 auto 在 flex 父级中会因收缩宽度被居中，
   导致 banner 文字不与顶部 logo 左对齐；强制撑满后文字与 logo 同一起点（容器内边距 24px） */
.hero__content>.container{width:100%}
.hero__box{max-width:640px}
.hero__tag{
  display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:100px;
  background:rgba(16,185,129,.14);border:1px solid rgba(52,211,153,.4);color:#6ee7b7;
  font-size:.8rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;margin-bottom:24px;
}
.hero__tag svg{width:14px;height:14px}
.hero__title{color:#fff;font-size:clamp(2rem,4.4vw,3.4rem);line-height:1.12;margin-bottom:20px}
.hero__title em{font-style:normal;color:#34d399}
.hero__text{color:#b8c4d4;font-size:1.02rem;line-height:1.8;margin-bottom:32px;max-width:560px}
.hero__actions{display:flex;gap:16px;flex-wrap:wrap}
.hero__dots{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5}
.hero__dots button{
  width:34px;height:5px;border-radius:4px;border:0;background:rgba(255,255,255,.28);
  cursor:pointer;transition:background .3s;padding:0;
}
.hero__dots button.is-active{background:#34d399}
.hero__arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:48px;height:48px;
  border-radius:50%;border:1px solid rgba(255,255,255,.35);background:rgba(7,17,32,.35);
  color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .25s;
}
.hero__arrow:hover{background:var(--brand-600);border-color:var(--brand-600)}
.hero__arrow svg{width:20px;height:20px}
.hero__arrow--prev{left:22px}
.hero__arrow--next{right:22px}

/* ---------- Inner page hero ---------- */
.page-hero{position:relative;padding:120px 0 84px;background:var(--dark);overflow:hidden}
.page-hero__bg{position:absolute;inset:0}
.page-hero__bg img{width:100%;height:100%;object-fit:cover;opacity:.3}
.page-hero__shade{position:absolute;inset:0;background:linear-gradient(100deg,rgba(7,17,32,.94) 20%,rgba(6,40,30,.62))}
.page-hero__content{position:relative;z-index:2}
.page-hero__crumb{display:flex;align-items:center;gap:8px;font-size:.85rem;color:#8fa3b8;margin-bottom:16px;flex-wrap:wrap}
.page-hero__crumb a{color:#cbd5e1}
.page-hero__crumb a:hover{color:#34d399}
.page-hero__crumb svg{width:12px;height:12px;opacity:.6}
.page-hero h1{color:#fff;font-size:clamp(1.9rem,3.6vw,2.8rem);margin-bottom:12px}
.page-hero__sub{color:#b8c4d4;max-width:680px;font-size:1.02rem;margin:0}

/* ---------- Stats band ---------- */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.stats--4{grid-template-columns:repeat(4,1fr)}
.stat{
  background:rgba(255,255,255,.05);border:1px solid rgba(52,211,153,.22);
  border-radius:var(--radius-lg);padding:34px 22px;text-align:center;transition:all .3s;
}
.stat:hover{background:rgba(255,255,255,.09);transform:translateY(-4px)}
.stat__icon{
  width:56px;height:56px;border-radius:50%;background:rgba(16,185,129,.16);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;color:#34d399;
}
.stat__icon svg{width:26px;height:26px}
.stat__num{font-size:clamp(1.7rem,3vw,2.4rem);font-weight:900;color:#34d399;line-height:1.1}
.stat__label{font-size:.82rem;color:#9fb0c3;margin-top:8px;text-transform:uppercase;letter-spacing:.06em}
.stats--light .stat{background:#fff;border-color:var(--line);box-shadow:var(--shadow-sm)}
.stats--light .stat__num{color:var(--brand-600)}
.stats--light .stat__label{color:var(--muted)}
.stats--light .stat__icon{background:var(--brand-050);color:var(--brand-600)}

/* ---------- Cards ---------- */
.grid{display:grid;gap:26px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;transition:all .3s ease;display:flex;flex-direction:column;
}
.card--hover:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(5,150,105,.35)}
.card__media{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--bg-soft)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card--hover:hover .card__media img{transform:scale(1.06)}
.card__body{padding:24px 24px 26px;flex:1;display:flex;flex-direction:column}
.card__title{font-size:1.08rem;margin-bottom:10px}
.card__title a{color:var(--ink)}
.card__title a:hover{color:var(--brand-600)}
.card__text{font-size:.92rem;color:var(--muted);flex:1;margin-bottom:16px}
.card__more{
  display:inline-flex;align-items:center;gap:7px;font-size:.87rem;font-weight:700;color:var(--brand-600);
}
.card__more svg{width:15px;height:15px;transition:transform .25s}
.card--hover:hover .card__more svg{transform:translateX(4px)}
.card__flag{
  position:absolute;top:14px;left:14px;background:rgba(5,150,105,.92);color:#fff;
  font-size:.72rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;
  padding:5px 12px;border-radius:100px;
}

/* Icon feature card */
.icard{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px 26px;transition:all .3s ease;position:relative;overflow:hidden;
}
.icard::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--brand),#2dd4bf);
  transform:scaleX(0);transform-origin:left;transition:transform .35s ease;
}
.icard:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(5,150,105,.3)}
.icard:hover::before{transform:scaleX(1)}
.icon-badge{
  width:58px;height:58px;border-radius:14px;background:var(--brand-050);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;margin-bottom:20px;
}
.icon-badge svg{width:28px;height:28px}
.icard:hover .icon-badge{background:var(--brand-600);color:#fff}
.icard h3{font-size:1.1rem;margin-bottom:10px}
.icard p{font-size:.92rem;color:var(--muted);margin:0}

/* Dark section cards */
.section--dark .icard{background:rgba(255,255,255,.05);border-color:rgba(52,211,153,.2)}
.section--dark .icard h3{color:#fff}
.section--dark .icard p{color:#9fb0c3}
.section--dark .icon-badge{background:rgba(16,185,129,.16);color:#34d399}
.section--dark .icard:hover .icon-badge{background:var(--brand-600);color:#fff}

/* Split media/text */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split--rev .split__media{order:2}
.split__media{position:relative}
.split__media img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);width:100%;object-fit:cover}
.split__media::after{
  content:"";position:absolute;inset:auto -18px -18px auto;width:55%;height:55%;
  border:3px solid var(--brand-100);border-radius:var(--radius-lg);z-index:-1;
}
.split__body .lead{color:var(--muted)}

/* Feature checklist */
.checks{list-style:none;display:grid;gap:12px;margin:22px 0}
.checks li{display:flex;gap:12px;align-items:flex-start;font-size:.95rem}
.checks li svg{width:20px;height:20px;color:var(--brand-600);flex-shrink:0;margin-top:3px}
.checks li span b{color:var(--ink)}

/* ---------- Chips ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.chip{
  padding:10px 22px;border-radius:100px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);font-size:.85rem;font-weight:800;
  letter-spacing:.1em;color:#d7e0ea;
}
.chip--light{background:#fff;border-color:var(--line);color:#475569;box-shadow:var(--shadow-sm)}

/* ---------- Timeline ---------- */
.timeline{position:relative;max-width:860px;margin:0 auto}
.timeline::before{
  content:"";position:absolute;left:19px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-100));
}
.tl-item{position:relative;padding:0 0 44px 68px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:10px;top:4px;width:20px;height:20px;border-radius:50%;
  background:#fff;border:4px solid var(--brand-600);box-shadow:0 0 0 5px var(--brand-050);
}
.tl-year{
  display:inline-block;background:var(--brand-050);color:var(--brand-700);
  font-weight:900;font-size:.9rem;padding:4px 14px;border-radius:100px;margin-bottom:10px;
}
.tl-item h3{font-size:1.15rem;margin-bottom:8px}
.tl-item p{color:var(--muted);font-size:.95rem;margin:0}

/* ---------- Process flow ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.flow--8{grid-template-columns:repeat(4,1fr)}
.flow__step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 20px 22px;text-align:center;transition:all .3s;
}
.flow__step:hover{border-color:var(--brand-600);box-shadow:var(--shadow-md);transform:translateY(-4px)}
.flow__num{
  counter-increment:step;width:44px;height:44px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand-600),#0d9488);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:900;font-size:1.05rem;
  margin:0 auto 14px;box-shadow:0 6px 14px -6px rgba(5,150,105,.6);
}
.flow__num::before{content:counter(step,decimal-leading-zero)}
.flow__step h4{font-size:.98rem;margin-bottom:6px}
.flow__step p{font-size:.82rem;color:var(--muted);margin:0}

/* ---------- Tables ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);background:#fff}
table.spec{width:100%;border-collapse:collapse;font-size:.92rem;min-width:640px}
table.spec th{
  background:var(--dark);color:#fff;text-align:left;padding:14px 18px;font-weight:700;
  font-size:.86rem;letter-spacing:.04em;white-space:nowrap;
}
table.spec td{padding:13px 18px;border-top:1px solid var(--line);color:#475569;vertical-align:top}
table.spec tr:nth-child(even) td{background:var(--bg-soft)}
table.spec td:first-child{font-weight:700;color:var(--ink);white-space:nowrap}
.table-note{font-size:.82rem;color:var(--muted);margin-top:10px}

/* ---------- Key-value list ---------- */
.kv{display:grid;gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.kv__row{display:grid;grid-template-columns:210px 1fr;border-bottom:1px solid var(--line)}
.kv__row:last-child{border-bottom:0}
.kv__key{background:var(--bg-soft);padding:14px 18px;font-weight:700;color:var(--ink);font-size:.9rem}
.kv__val{padding:14px 18px;font-size:.92rem;color:var(--body-c)}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(115deg,#065f46 0%,var(--dark-2) 55%,var(--dark) 100%);
  color:#fff;padding:72px 0;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(16,185,129,.25),transparent 65%);
}
.cta-band__inner{max-width:var(--container);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:36px;position:relative;z-index:2;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:1.8rem;margin-bottom:10px}
.cta-band p{color:#a7f3d0;margin:0;max-width:560px}

/* ---------- News ---------- */
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  display:flex;flex-direction:column;transition:all .3s ease;
}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.news-card__media{position:relative;aspect-ratio:16/9;overflow:hidden}
.news-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-card:hover .news-card__media img{transform:scale(1.05)}
.news-card__date{
  position:absolute;top:14px;left:14px;background:#fff;border-radius:10px;text-align:center;
  padding:7px 12px;box-shadow:var(--shadow-md);line-height:1.15;
}
.news-card__date b{display:block;font-size:1.15rem;color:var(--brand-600)}
.news-card__date span{font-size:.7rem;color:var(--muted);font-weight:700;letter-spacing:.08em}
.news-card__body{padding:22px 24px 24px;flex:1;display:flex;flex-direction:column}
.news-card__cat{font-size:.74rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--brand-600);margin-bottom:8px}
.news-card__title{font-size:1.05rem;line-height:1.45;margin-bottom:10px}
.news-card__title a{color:var(--ink)}
.news-card__title a:hover{color:var(--brand-600)}
.news-card__excerpt{font-size:.89rem;color:var(--muted);flex:1;margin-bottom:14px}

/* ---------- FAQ ---------- */
.faq{max-width:840px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;background:#fff;overflow:hidden;transition:border-color .25s}
.faq-item[open]{border-color:var(--brand-600)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;
  gap:16px;padding:19px 22px;font-weight:700;color:var(--ink);font-size:.99rem;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex-shrink:0;width:30px;height:30px;border-radius:50%;background:var(--brand-050);
  color:var(--brand-600);display:flex;align-items:center;justify-content:center;
  font-size:1.25rem;font-weight:600;transition:all .3s;
}
.faq-item[open] summary::after{content:"−";background:var(--brand-600);color:#fff;transform:rotate(180deg)}
.faq-item__body{padding:0 22px 20px;color:var(--muted);font-size:.93rem}

/* ---------- Certificate / patent galleries ---------- */
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cert-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:all .3s;position:relative;
}
.cert-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(5,150,105,.35)}
.cert-card img{width:100%;aspect-ratio:3/4;object-fit:cover;object-position:top}
.cert-card figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:26px 14px 12px;font-size:.8rem;font-weight:700;
  color:#fff;background:linear-gradient(transparent,rgba(7,17,32,.85));
}

/* ---------- Logo wall ---------- */
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.logo-wall .lw{
  background:#fff;border:1px solid var(--line);border-radius:12px;height:76px;
  display:flex;align-items:center;justify-content:center;padding:14px;transition:all .3s;
}
.logo-wall .lw:hover{box-shadow:var(--shadow-md);border-color:rgba(5,150,105,.3)}
.logo-wall img{max-height:40px;width:auto;filter:grayscale(1);opacity:.65;transition:all .3s}
.logo-wall .lw:hover img{filter:grayscale(0);opacity:1}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.25fr;gap:44px;align-items:start}
.contact-card{
  display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;transition:all .3s;
}
.contact-card:hover{border-color:rgba(5,150,105,.35);box-shadow:var(--shadow-md)}
.contact-card .icon-badge{width:50px;height:50px;margin:0;flex-shrink:0;border-radius:12px}
.contact-card h4{margin-bottom:4px;font-size:.98rem}
.contact-card p{margin:0;font-size:.9rem;color:var(--muted);word-break:break-word}
.contact-card a{color:var(--brand-600);font-weight:600}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-grid .full{grid-column:1/-1}
.form-field label{display:block;font-size:.84rem;font-weight:700;color:var(--ink);margin-bottom:7px}
.form-field input,.form-field select,.form-field textarea{
  width:100%;padding:12px 15px;border:1.5px solid var(--line);border-radius:10px;
  font-family:var(--font);font-size:.93rem;color:var(--ink);background:#fff;
  transition:border-color .25s,box-shadow .25s;
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--brand-600);box-shadow:0 0 0 4px rgba(5,150,105,.12);
}
.form-field textarea{min-height:130px;resize:vertical}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:#8fa3b8;font-size:.9rem}
.footer-top{padding:72px 0 48px;display:grid;grid-template-columns:1.35fr .95fr .95fr 1fr 1.2fr;gap:40px}
.site-footer h4{color:#fff;font-size:.98rem;margin-bottom:20px;position:relative;padding-bottom:12px}
.site-footer h4::after{content:"";position:absolute;left:0;bottom:0;width:34px;height:3px;border-radius:3px;background:var(--brand)}
.footer-links{list-style:none;display:grid;gap:10px}
.footer-links a{color:#8fa3b8;display:inline-block;transition:all .2s}
.footer-links a:hover{color:#34d399;padding-left:4px}
.footer-about img{height:42px;margin-bottom:18px}
.footer-about p{font-size:.88rem;line-height:1.75;color:#8fa3b8}
.footer-contact{list-style:none;display:grid;gap:15px}
.footer-contact li{display:flex;gap:13px;align-items:flex-start}
.footer-contact svg{width:17px;height:17px;color:var(--brand);flex-shrink:0;margin-top:4px}
.footer-contact a{color:#cbd5e1}
.footer-contact a:hover{color:#34d399}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0}
.footer-bottom__inner{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;font-size:.82rem}
.footer-bottom a{color:#8fa3b8}
.footer-bottom a:hover{color:#34d399}
/* 友情链接行（footer 内，仅 PC 首页由 JS 显示） */
.footer-friendlinks{border-top:1px solid rgba(255,255,255,.08);padding:18px 24px 0;font-size:12px;color:#e2e8f0;line-height:2}
.footer-friendlinks .fl-label{color:#fff;font-weight:700;letter-spacing:.06em}
.footer-friendlinks a{color:#e2e8f0;margin:0 2px}
.footer-friendlinks a:hover{color:#34d399}
/* 移动端：底部已有固定询盘条，隐藏右侧电话/咨询悬浮钮，仅保留返回顶部 */
@media (max-width:1024px){
  .fixed-contact{display:none!important}
}

/* ---------- Misc ---------- */
.hidden{display:none!important}
/* 返回顶部：与右侧悬浮"电话/联系我们"圆形按钮同款式（46px 圆形、品牌绿、同投影、同右缘对齐） */
.backtop{
  position:fixed;right:18px;bottom:26px;z-index:90;width:46px;height:46px;border-radius:50%;
  background:var(--brand);color:#fff;border:0;cursor:pointer;display:flex;
  align-items:center;justify-content:center;box-shadow:0 8px 20px -6px rgba(16,185,129,.55);
  opacity:0;visibility:hidden;transform:translateY(12px);transition:all .3s;
}
.backtop.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.backtop:hover{background:var(--brand-700);box-shadow:0 12px 24px -8px rgba(16,185,129,.6)}
.backtop svg{width:20px;height:20px}

.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
.reveal-d1{transition-delay:.1s}
.reveal-d2{transition-delay:.2s}
.reveal-d3{transition-delay:.3s}

.img-frame{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);border:1px solid var(--line)}
.img-frame img{width:100%;height:100%;object-fit:cover}

.note{background:var(--brand-050);border-left:4px solid var(--brand-600);border-radius:0 10px 10px 0;padding:16px 20px;font-size:.92rem;color:#065f46}
.section--dark .note{background:rgba(16,185,129,.1);border-color:#34d399;color:#a7f3d0}

.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;gap:7px;background:var(--bg-soft);border:1px solid var(--line);
  padding:8px 16px;border-radius:100px;font-size:.83rem;font-weight:700;color:#475569;
}
.tag svg{width:14px;height:14px;color:var(--brand-600)}

.quote{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;
  box-shadow:var(--shadow-sm);position:relative;
}
.quote::before{
  content:"“";position:absolute;top:6px;left:20px;font-size:4.5rem;color:var(--brand-100);
  font-family:Georgia,serif;line-height:1;
}
.quote p{position:relative;font-size:.95rem;color:#475569;font-style:italic;margin:14px 0 0}

.sitemap-cols{columns:2;column-gap:48px}
.sitemap-cols ul{list-style:none;display:grid;gap:10px;margin-bottom:24px}
.sitemap-cols a{color:#475569;font-weight:600}
.sitemap-cols a:hover{color:var(--brand-600)}
.sitemap-cols h3{break-after:avoid}

/* ---------- Site search overlay ---------- */
.search-btn{
  display:inline-flex;align-items:center;gap:7px;padding:9px 14px;border:1.5px solid var(--line);
  border-radius:8px;background:#fff;font-family:var(--font);font-size:.85rem;font-weight:600;
  color:#475569;cursor:pointer;transition:all .25s;
}
.search-btn:hover{border-color:var(--brand-600);color:var(--brand-600)}
.search-btn svg{width:16px;height:16px}
.search-overlay{
  display:none;position:fixed;inset:0;z-index:300;background:rgba(7,17,32,.62);
  backdrop-filter:blur(6px);opacity:0;pointer-events:none;transition:opacity .25s;
  padding:10vh 20px 20px;overflow-y:auto;
}
.search-overlay.is-open{display:block;opacity:1;pointer-events:auto}
.search-panel{
  max-width:680px;margin:0 auto;background:#fff;border-radius:18px;box-shadow:var(--shadow-lg);
  overflow:hidden;
}
.search-panel__head{border-bottom:1px solid var(--line);padding:6px}
.search-box{display:flex;align-items:center;gap:12px;padding:10px 14px}
.search-box svg{width:20px;height:20px;color:var(--muted);flex-shrink:0}
.search-box input{
  flex:1;border:0;outline:none;font-family:var(--font);font-size:1.05rem;color:var(--ink);min-width:0;
}
.search-box input::-webkit-search-cancel-button,.search-box input::-webkit-search-decoration{-webkit-appearance:none;display:none}
.search-close{background:none;border:0;cursor:pointer;color:var(--muted);padding:6px}
.search-close svg{width:20px;height:20px}
.search-results{max-height:46vh;overflow-y:auto;padding:10px}
.search-hit{
  display:block;padding:13px 14px;border-radius:10px;transition:background .2s;
}
.search-hit:hover{background:var(--brand-050)}
.search-hit b{display:block;color:var(--ink);font-size:.97rem;margin-bottom:3px}
.search-hit b mark{background:rgba(16,185,129,.22);color:var(--brand-700);border-radius:3px;padding:0 2px}
.search-hit span{display:block;font-size:.84rem;color:var(--muted);line-height:1.55}
.search-empty,.search-count{padding:14px;font-size:.9rem;color:var(--muted);margin:0}
.search-count{border-top:1px dashed var(--line);font-size:.82rem;text-align:center}
.search-hint{
  padding:12px 18px;background:var(--bg-soft);font-size:.82rem;color:var(--muted);
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.search-hint button{
  background:#fff;border:1px solid var(--line);border-radius:100px;padding:4px 12px;
  font-family:var(--font);font-size:.78rem;font-weight:700;color:#475569;cursor:pointer;
}
.search-hint button:hover{border-color:var(--brand-600);color:var(--brand-600)}

/* ---------- Mobile sticky CTA ---------- */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:95;display:none;
  background:#fff;border-top:1px solid var(--line);box-shadow:0 -8px 24px -12px rgba(11,21,38,.25);
  transform:translateY(100%);transition:transform .3s ease;padding-bottom:env(safe-area-inset-bottom);
}
.mobile-cta.is-visible{transform:translateY(0)}
.mobile-cta a{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:9px 4px 10px;
  font-size:.68rem;font-weight:700;color:#475569;border-right:1px solid var(--line);
}
.mobile-cta a:last-child{border-right:0}
.mobile-cta svg{width:19px;height:19px;color:var(--brand-600)}
.mobile-cta .mobile-cta__quote{background:var(--brand-600);color:#fff}
.mobile-cta .mobile-cta__quote svg{color:#fff}

/* ---------- Footer newsletter ---------- */
.footer-news{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.08);padding:30px 24px 34px;
}
.footer-news__txt h4{margin-bottom:6px;display:flex;align-items:center;gap:10px}
.footer-news__txt h4 svg{width:20px;height:20px;color:#34d399}
.footer-news__txt p{margin:0;font-size:.85rem;color:#8fa3b8;max-width:480px}
.footer-news__form{display:flex;gap:10px;flex-wrap:wrap}
.footer-news__form input{
  min-width:260px;padding:12px 16px;border:1.5px solid rgba(255,255,255,.16);border-radius:10px;
  background:rgba(255,255,255,.06);color:#e2e8f0;font-family:var(--font);font-size:.9rem;
}
.footer-news__form input::placeholder{color:#64748b}
.footer-news__form input:focus{outline:none;border-color:var(--brand)}

/* ---------- Related strips (products / cases) ---------- */
.related-strip{border-top:1px solid var(--line)}
.rp-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:44px}
.rp-link{
  display:flex;align-items:center;gap:14px;padding:16px 18px;border:1px solid var(--line);
  border-radius:12px;color:#475569;transition:all .25s;background:#fff;
}
.rp-link:hover{border-color:var(--brand-600);box-shadow:var(--shadow-sm);color:var(--brand-700)}
.rp-link small{display:block;font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;color:var(--muted)}
.rp-link b{color:var(--ink);font-size:.93rem}
.rp-link svg{width:18px;height:18px;color:var(--brand-600);flex-shrink:0}
.rp-link--next{justify-content:flex-end;text-align:right}
.rp-link--next div{order:-1}
.rp-title{font-size:1.25rem;margin-bottom:22px}
.rp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.rp-card{
  display:flex;flex-direction:column;gap:6px;padding:22px;border:1px solid var(--line);
  border-radius:14px;background:#fff;transition:all .3s;position:relative;overflow:hidden;
}
.rp-card b{color:var(--ink);font-size:.98rem}
.rp-card span{font-size:.83rem;color:var(--muted)}
.rp-card svg{width:17px;height:17px;color:var(--brand-600);margin-top:8px;transition:transform .25s}
.rp-card:hover{border-color:var(--brand-600);box-shadow:var(--shadow-md);transform:translateY(-4px);color:inherit}
.rp-card:hover svg{transform:translateX(4px)}

/* ---------- 404 ---------- */
.error-wrap{min-height:56vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:60px 24px}
.error-code{
  font-size:clamp(5rem,14vw,8.5rem);font-weight:900;line-height:1;letter-spacing:-.03em;
  background:linear-gradient(120deg,var(--brand-600),#2dd4bf);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.error-wrap h1{font-size:1.7rem;margin:10px 0 14px}
.error-wrap p{color:var(--muted);max-width:520px;margin-bottom:30px}
.error-links{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}

/* ---------- Glossary ---------- */
.glossary{max-width:900px;margin:0 auto}
.glossary__letter{
  display:inline-flex;width:44px;height:44px;border-radius:12px;background:var(--dark);
  color:#34d399;font-weight:900;font-size:1.2rem;align-items:center;justify-content:center;margin:34px 0 16px;
}
.glossary__term{font-weight:700;color:var(--ink)}
.glossary__def{font-size:.92rem;color:var(--muted)}

/* ---------- Testimonials ---------- */
.tst{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;display:flex;flex-direction:column;gap:16px;transition:all .3s}
.tst:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.tst__stars{display:flex;gap:3px;color:#f59e0b}
.tst__stars svg{width:17px;height:17px;fill:currentColor;stroke:none}
.tst__text{font-size:.93rem;color:#475569;font-style:italic;flex:1;margin:0}
.tst__who{display:flex;align-items:center;gap:12px;border-top:1px dashed var(--line);padding-top:16px}
.tst__avatar{
  width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--brand-600),#0d9488);
  color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.9rem;flex-shrink:0;
}
.tst__who b{display:block;color:var(--ink);font-size:.88rem;line-height:1.3}
.tst__who span{font-size:.76rem;color:var(--muted)}

/* ---------- Responsive additions ---------- */
@media (max-width:1024px){
  .rp-grid{grid-template-columns:repeat(2,1fr)}
  .footer-news{justify-content:flex-start}
}
@media (max-width:640px){
  .search-btn span{display:none}
  .search-btn{padding:9px 11px}
  .rp-nav{grid-template-columns:1fr}
  .rp-link--next{flex-direction:row-reverse;justify-content:flex-start;text-align:left}
  .rp-link--next div{order:0}
  .rp-grid{grid-template-columns:1fr}
  .footer-news__form{width:100%}
  .footer-news__form input{min-width:0;flex:1}
  .mobile-cta{display:flex}
  .backtop{bottom:74px;right:18px}
  .footer-bottom__inner{justify-content:center;text-align:center}
  .search-overlay{padding-top:6vh}
}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .nav__link{padding:10px 9px;font-size:.88rem}
  .logo-wall{grid-template-columns:repeat(4,1fr)}
}
@media (max-width:1024px){
  .nav,.header-actions .lang-btn{display:none}
  .burger{display:block}
  .hero{height:560px}
  .g-4{grid-template-columns:repeat(2,1fr)}
  .g-3{grid-template-columns:repeat(2,1fr)}
  .stats,.stats--4{grid-template-columns:repeat(2,1fr)}
  .flow,.flow--8{grid-template-columns:repeat(2,1fr)}
  .cert-grid{grid-template-columns:repeat(3,1fr)}
  .split{grid-template-columns:1fr;gap:36px}
  .split--rev .split__media{order:0}
  .contact-grid{grid-template-columns:1fr}
  /* 移动端：公司介绍整行，其余 4 栏 2×2 */
  .footer-top{grid-template-columns:1fr 1fr;gap:32px 24px;padding:52px 0 40px}
  .footer-top .footer-about{grid-column:1/-1}
  .site-footer h4{margin-bottom:14px}
  .section{padding:64px 0}
}
@media (max-width:640px){
  h1{font-size:1.8rem}
  h2{font-size:1.5rem}
  .topbar__group--extra{display:none}
  .hero{height:600px}
  .hero__content{align-items:flex-end;padding-bottom:86px}
  .g-2,.g-3,.g-4{grid-template-columns:1fr}
  .stats,.stats--4{grid-template-columns:repeat(2,1fr);gap:14px}
  .flow,.flow--8{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .cert-grid{grid-template-columns:repeat(2,1fr)}
  .logo-wall{grid-template-columns:repeat(3,1fr);gap:12px}
  .kv__row{grid-template-columns:1fr}
  .kv__key{padding-bottom:2px}
  /* 640px 以下仍保持 2×2（about 已整行） */
  .footer-top{gap:26px 18px}
  .cta-band__inner{justify-content:center;text-align:center}
  .page-hero{padding:88px 0 64px}
  .btn-quote{display:none}
  .section{padding:56px 0}
}