/* 福建沧晟化工有限公司 — 独立实现的响应式官网样式 */
:root{
  --teal:#218b86;
  --teal-dark:#12635f;
  --teal-deep:#0e4e4b;
  --ink:#171b1f;
  --ink-soft:#3b444a;
  --muted:#717b82;
  --line:#e7ebed;
  --paper:#fff;
  --mist:#f2f4f5;
  --mist-2:#e9edef;
  --gold:#d5a44d;
  --max:1320px;
  --header-height:74px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--font);font-size:16px;line-height:1.75;overflow-x:hidden}
body.modal-open{overflow:hidden}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit}
button,a{ -webkit-tap-highlight-color:transparent}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{line-height:1.22;letter-spacing:-.02em}
svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.shell{width:min(calc(100% - 64px),var(--max));margin-inline:auto}
.skip-link{position:fixed;left:-999px;top:12px;z-index:999;background:var(--ink);color:#fff;padding:10px 16px}
.skip-link:focus{left:12px}

/* Header */
.site-header{position:fixed;inset:0 0 auto;z-index:80;height:var(--header-height);background:rgba(255,255,255,.97);border-bottom:1px solid rgba(17,31,35,.08);transition:box-shadow .3s var(--ease),background .3s var(--ease)}
.site-header.is-stuck{background:rgba(255,255,255,.94);box-shadow:0 8px 28px rgba(10,31,38,.1);backdrop-filter:blur(14px)}
.header-inner{height:100%;display:flex;align-items:center;gap:24px}
.brand{display:inline-flex;align-items:center;gap:11px;min-width:max-content}
.brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:50%;background:var(--teal);color:#fff;font-weight:800;font-size:18px;letter-spacing:-.08em;box-shadow:0 5px 14px rgba(33,139,134,.28)}
.brand-logo{display:block;width:42px;height:42px;flex:0 0 42px;border-radius:9px;object-fit:contain;object-position:center;background:#fff;box-shadow:0 4px 14px rgba(10,31,38,.12)}
.brand-logo[hidden]{display:none}
.brand-copy{display:flex;flex-direction:column;line-height:1.12}
.brand-copy strong{font-size:15px;letter-spacing:.03em;white-space:nowrap}
.brand-copy small{font-size:9px;letter-spacing:.18em;color:var(--muted);margin-top:4px}
.main-nav{display:flex;align-items:center;gap:clamp(12px,2vw,32px);margin-left:auto}
.main-nav > a,.nav-dropdown-trigger{position:relative;padding:25px 0 23px;color:#3f474c;font-size:14px;white-space:nowrap;transition:color .25s}
.main-nav > a::after,.nav-dropdown-trigger::after{content:"";position:absolute;left:0;right:100%;bottom:17px;height:2px;background:var(--teal);transition:right .35s var(--ease)}
.main-nav > a:hover,.main-nav > a.is-active,.nav-dropdown-trigger:hover,.nav-dropdown-trigger.is-active{color:var(--teal)}
.main-nav > a:hover::after,.main-nav > a.is-active::after,.nav-dropdown-trigger:hover::after,.nav-dropdown-trigger.is-active::after{right:0}
.nav-dropdown{position:relative}
.nav-dropdown-trigger{display:flex;align-items:center;gap:5px;padding-inline:12px;margin-inline:-12px}
.nav-dropdown-chevron{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .25s var(--ease)}
.nav-dropdown:hover .nav-dropdown-chevron,.nav-dropdown:focus-within .nav-dropdown-chevron,.nav-dropdown.is-open .nav-dropdown-chevron{transform:rotate(180deg)}
.nav-dropdown:hover .nav-dropdown-trigger,.nav-dropdown:focus-within .nav-dropdown-trigger,.nav-dropdown.is-open .nav-dropdown-trigger{background:var(--teal);color:#fff}
.nav-dropdown:hover .nav-dropdown-trigger::after,.nav-dropdown:focus-within .nav-dropdown-trigger::after,.nav-dropdown.is-open .nav-dropdown-trigger::after{right:100%;opacity:0}
.nav-dropdown-menu{position:absolute;top:calc(100% - 1px);left:-12px;width:340px;padding:10px 0;background:#fff;border:1px solid rgba(20,55,60,.09);box-shadow:0 22px 52px rgba(8,31,36,.2);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-10px);transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;z-index:90}
.nav-dropdown:hover .nav-dropdown-menu,.nav-dropdown:focus-within .nav-dropdown-menu,.nav-dropdown.is-open .nav-dropdown-menu{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
.nav-dropdown-primary{display:flex;flex-direction:column}
.nav-dropdown-item{position:relative;width:100%;min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px;border:0;background:#fff;padding:0 21px;color:var(--ink-soft);font:inherit;font-size:16px;text-align:left;cursor:pointer;transition:background .2s,color .2s}
.nav-dropdown-item>span{min-width:0}
.nav-dropdown-item:hover,.nav-dropdown-item.is-active,.nav-dropdown-item:focus-visible{background:#f1f8f7;color:var(--teal-dark)}
.nav-dropdown-item:focus-visible{outline:2px solid rgba(33,139,134,.42);outline-offset:-3px}
.nav-dropdown-arrow{width:18px;height:18px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s var(--ease)}
.nav-dropdown-item:hover .nav-dropdown-arrow,.nav-dropdown-item.is-active .nav-dropdown-arrow,.nav-dropdown-item:focus-visible .nav-dropdown-arrow{transform:translateX(3px)}
.nav-dropdown-item.is-flipped .nav-dropdown-arrow{transform:rotate(180deg)}
.nav-dropdown-submenu{position:absolute;left:100%;top:-11px;width:260px;max-height:calc(100vh - var(--header-height) - 24px);overflow-y:auto;padding:10px;background:#fff;border:1px solid rgba(20,55,60,.09);box-shadow:0 18px 44px rgba(8,31,36,.18);opacity:0;visibility:hidden;pointer-events:none;transform:translateX(-8px);transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;z-index:2}
.nav-dropdown-submenu.is-flipped{left:auto;right:100%;transform:translateX(8px)}
.nav-dropdown-item:hover+.nav-dropdown-submenu,.nav-dropdown-item.is-active+.nav-dropdown-submenu,.nav-dropdown-item:focus+.nav-dropdown-submenu{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(0)}
.nav-dropdown-submenu a{position:relative;display:flex;align-items:center;min-height:42px;padding:8px 12px 8px 27px;color:#657078;font-size:14px;line-height:1.35;white-space:normal;transition:background .18s,color .18s,transform .18s}
.nav-dropdown-submenu a::before{content:"";position:absolute;left:13px;top:50%;width:5px;height:5px;border-radius:50%;background:#bdc7ca;transform:translateY(-50%);transition:background .18s,transform .18s}
.nav-dropdown-submenu a:hover,.nav-dropdown-submenu a:focus-visible{background:#edf7f6;color:var(--teal-dark);transform:translateX(3px);outline:none}
.nav-dropdown-submenu a:hover::before,.nav-dropdown-submenu a:focus-visible::before{background:var(--teal);transform:translateY(-50%) scale(1.35)}
.nav-dropdown-trigger:focus-visible,.main-nav>a:focus-visible{outline:2px solid rgba(33,139,134,.55);outline-offset:4px}

.header-actions{display:flex;align-items:center;gap:10px;margin-left:12px}
.header-cta,.language-trigger{height:38px;border:0;border-radius:20px;padding:0 17px;display:inline-flex;align-items:center;justify-content:center;gap:7px;font-size:13px;transition:.25s var(--ease)}
.header-cta{background:var(--teal);color:#fff;box-shadow:0 5px 14px rgba(33,139,134,.23)}
.header-cta:hover{background:var(--teal-dark);transform:translateY(-2px);box-shadow:0 8px 18px rgba(33,139,134,.3)}
.language{position:relative}
.language-trigger{background:#e9f4f3;color:var(--teal-dark);padding-inline:13px}
.language-trigger svg:first-child{width:16px;height:16px}
.language-chevron{width:14px;height:14px;transition:transform .25s}
.language.is-open .language-chevron{transform:rotate(180deg)}
.language-menu{position:absolute;right:0;top:calc(100% + 9px);min-width:116px;padding:7px;background:#fff;border:1px solid var(--line);box-shadow:0 12px 30px rgba(8,30,34,.15);opacity:0;visibility:hidden;transform:translateY(-8px);transition:.24s var(--ease)}
.language.is-open .language-menu{opacity:1;visibility:visible;transform:translateY(0)}
.language-menu button{display:block;width:100%;border:0;background:transparent;padding:8px 11px;text-align:left;color:var(--ink-soft);font-size:13px}
.language-menu button:hover,.language-menu button.is-active{background:#eff8f7;color:var(--teal-dark)}
.nav-toggle{display:none;width:38px;height:38px;border:1px solid var(--line);background:#fff;padding:9px;flex-direction:column;justify-content:center;gap:4px}
.nav-toggle span{display:block;height:2px;background:var(--ink);transition:.25s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* Buttons */
.button{display:inline-flex;align-items:center;justify-content:center;min-height:47px;padding:0 27px;border:1px solid transparent;border-radius:25px;font-size:14px;letter-spacing:.02em;transition:transform .3s var(--ease),background .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease)}
.button:hover{transform:translateY(-3px)}
.button-light{background:#fff;color:var(--teal-dark);box-shadow:0 12px 25px rgba(0,0,0,.14)}
.button-light:hover{background:var(--teal);color:#fff}
.button-outline{color:#fff;border-color:rgba(255,255,255,.7);background:rgba(0,0,0,.08)}
.button-outline:hover{background:#fff;color:var(--teal-dark);border-color:#fff}
.button-dark{background:#3f464a;color:#fff}
.button-dark:hover{background:var(--teal);box-shadow:0 10px 24px rgba(33,139,134,.23)}

/* Hero */
.hero{position:relative;height:max(650px,calc(100vh - var(--header-height)));min-height:650px;max-height:900px;margin-top:var(--header-height);overflow:hidden;background:#1d2426;color:#fff}
.hero-slides,.hero-slide{position:absolute;inset:0}
.hero-slide{opacity:0;visibility:hidden;transition:opacity .8s var(--ease),visibility .8s}
.hero-slide.is-active{opacity:1;visibility:visible;z-index:1}
.hero-bg{position:absolute;inset:-3%;background-position:center;background-size:cover;transform:scale(1.08);transition:transform 7s ease}
.hero-slide.is-active .hero-bg{transform:scale(1)}
.hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,17,21,.76) 0%,rgba(7,20,24,.5) 48%,rgba(7,20,24,.18) 100%),linear-gradient(0deg,rgba(5,15,17,.4),transparent 55%)}
.hero-content{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;padding-top:35px;max-width:1320px}
.hero-eyebrow{margin-bottom:20px;color:#bce4e1;font-size:13px;letter-spacing:.22em;text-transform:uppercase;opacity:0;transform:translateY(24px);transition:.7s .15s var(--ease)}
.hero-content h1{max-width:760px;margin-bottom:22px;font-size:clamp(42px,5.6vw,78px);font-weight:750;letter-spacing:-.055em;line-height:1.08;opacity:0;transform:translateY(30px);transition:.75s .28s var(--ease)}
.hero-text{max-width:650px;margin-bottom:34px;color:rgba(255,255,255,.83);font-size:16px;line-height:1.9;opacity:0;transform:translateY(30px);transition:.75s .4s var(--ease)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;opacity:0;transform:translateY(30px);transition:.75s .52s var(--ease)}
.hero-slide.is-active .hero-eyebrow,.hero-slide.is-active .hero-content h1,.hero-slide.is-active .hero-text,.hero-slide.is-active .hero-actions{opacity:1;transform:translateY(0)}
.hero-arrow{position:absolute;z-index:4;top:50%;width:52px;height:52px;transform:translateY(-50%);display:grid;place-items:center;border:1px solid rgba(255,255,255,.34);border-radius:50%;background:rgba(11,26,29,.16);color:#fff;transition:.25s var(--ease);opacity:0}
.hero:hover .hero-arrow{opacity:1}
.hero-arrow:hover{background:var(--teal);border-color:var(--teal);transform:translateY(-50%) scale(1.06)}
.hero-arrow svg{width:22px;height:22px}
.hero-arrow--prev{left:28px}
.hero-arrow--next{right:28px}
.hero-dots{position:absolute;z-index:4;left:50%;bottom:38px;display:flex;gap:9px;transform:translateX(-50%)}
.hero-dots button{width:32px;height:4px;padding:0;border:0;background:rgba(255,255,255,.45);transition:.3s}
.hero-dots button.is-active{width:54px;background:#fff}
.scroll-cue{position:absolute;z-index:4;right:36px;bottom:27px;display:flex;align-items:center;gap:12px;color:rgba(255,255,255,.85);font-size:11px;letter-spacing:.15em;writing-mode:vertical-rl}
.scroll-cue i{display:block;width:1px;height:48px;background:rgba(255,255,255,.5);position:relative;overflow:hidden}
.scroll-cue i::after{content:"";position:absolute;left:0;top:-25px;width:1px;height:25px;background:#fff;animation:scrollLine 1.8s ease-in-out infinite}
@keyframes scrollLine{0%{top:-25px}70%,100%{top:55px}}

/* Section basics */
.section{padding:105px 0}
.section-kicker{margin-bottom:13px;color:var(--teal);font-size:12px;font-weight:700;letter-spacing:.2em;text-transform:uppercase}
.section-heading{max-width:760px;margin:0 auto 54px;text-align:center}
.section-heading h2,.news-heading h2{margin-bottom:14px;font-size:clamp(34px,4vw,52px);font-weight:750}
.section-heading>p:last-child{margin-bottom:0;color:var(--muted);font-size:15px}
.section-heading--light{color:#fff}
.section-heading--light .section-kicker{color:#9de1dd}
.section-heading--light>p:last-child{color:rgba(255,255,255,.72)}
.reveal{opacity:1;transform:none}
.motion-ready .reveal{opacity:0;transform:translateY(30px);transition:opacity .75s var(--ease),transform .75s var(--ease)}
.motion-ready .reveal.is-visible{opacity:1;transform:translateY(0)}

/* About */
.about-section{position:relative;background:#fff;overflow:hidden}
.about-section::before{content:"";position:absolute;inset:0;background:repeating-radial-gradient(ellipse at 15% 35%,transparent 0 55px,rgba(33,139,134,.045) 56px 57px,transparent 58px 72px);pointer-events:none}
.about-grid{position:relative;display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(50px,8vw,115px);align-items:center}
.about-copy h2{margin-bottom:25px;font-size:clamp(36px,4.5vw,60px);font-weight:750}
.about-copy .lead{margin-bottom:15px;color:var(--ink-soft);font-size:17px;line-height:1.95}
.about-copy>p:not(.section-kicker):not(.lead){color:var(--muted);font-size:14px}
.about-facts{list-style:none;padding:0;margin:31px 0 34px;display:grid;gap:14px}
.about-facts li{display:flex;gap:14px;align-items:flex-start;padding-bottom:14px;border-bottom:1px solid var(--line)}
.about-facts li>span{display:grid;place-items:center;flex:0 0 34px;height:34px;border:1px solid #b6dcda;border-radius:50%;color:var(--teal);font-size:11px;font-weight:700}
.about-facts strong,.about-facts small{display:block}
.about-facts strong{font-size:15px;line-height:1.5}
.about-facts small{color:var(--muted);font-size:12px;line-height:1.6;margin-top:3px}
.media-frame{position:relative;min-height:480px;overflow:hidden;background:#dce5e6}
.media-frame img{width:100%;height:480px;object-fit:cover;transition:transform .7s var(--ease)}
.media-frame:hover img{transform:scale(1.04)}
.media-badge{position:absolute;left:24px;bottom:24px;min-width:135px;padding:17px 19px;background:rgba(255,255,255,.93);color:var(--ink)}
.media-badge strong{display:block;color:var(--teal);font-size:34px;line-height:1.1;font-weight:750}
.media-badge span{font-size:11px;letter-spacing:.12em;color:var(--muted)}
.media-note{display:flex;gap:14px;align-items:center;padding:17px 0 0;color:var(--muted);font-size:13px}
.media-note-line{display:block;width:44px;height:1px;background:var(--teal)}
.media-note p{margin:0}
.feature-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:62px}
.feature-card{min-height:177px;padding:24px 22px 21px;background:#f6f7f7;border-top:3px solid transparent;transition:.35s var(--ease)}
.feature-card:hover{background:#eef7f6;border-top-color:var(--teal);transform:translateY(-7px);box-shadow:0 16px 35px rgba(21,57,63,.1)}
.feature-icon{width:44px;height:44px;margin-bottom:17px;color:var(--teal)}
.feature-card strong{display:block;margin-bottom:6px;font-size:16px}
.feature-card span{display:block;color:var(--muted);font-size:12px;line-height:1.7}

/* Strength */
.strength-section{padding:88px 0;background:linear-gradient(125deg,#e5e7ea 0%,#f8f9fa 46%,#dfe4e7 100%);position:relative;overflow:hidden}
.strength-section::after{content:"";position:absolute;inset:-45% -15%;background:repeating-radial-gradient(ellipse at center,transparent 0 75px,rgba(255,255,255,.52) 76px 79px,transparent 80px 110px);transform:rotate(-12deg);pointer-events:none}
.strength-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr .85fr;gap:80px;align-items:center}
.strength-copy h2{margin-bottom:14px;font-size:clamp(34px,4vw,53px);font-weight:750}
.strength-copy>p:not(.section-kicker){max-width:620px;color:var(--muted);font-size:14px}
.stats{display:grid;gap:25px;margin-top:37px}
.stat{display:grid;grid-template-columns:38px auto auto;grid-template-rows:auto auto;column-gap:11px;align-items:end}
.stat-icon{grid-row:1/3;align-self:center;width:31px;height:31px;color:#3b444a}
.stat-number{color:var(--teal);font-size:clamp(42px,5vw,68px);font-weight:750;line-height:.9;letter-spacing:-.06em}
.stat em{font-style:normal;color:#555e64;font-size:16px;margin-left:4px}
.stat small{grid-column:2/4;color:#687279;font-size:12px}
.strength-visual{position:relative}
.strength-image{position:relative;height:410px;overflow:hidden;box-shadow:0 25px 55px rgba(35,55,61,.2)}
.strength-image img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease)}
.strength-visual:hover img{transform:scale(1.05)}
.strength-image-overlay{position:absolute;inset:0;padding:34px;display:flex;flex-direction:column;justify-content:flex-end;background:linear-gradient(0deg,rgba(7,35,41,.75),rgba(7,35,41,.04) 70%);color:#fff}
.strength-image-overlay .eyebrow{color:#a9e2df;font-size:11px;letter-spacing:.2em}
.strength-image-overlay strong{font-size:25px;font-weight:650}
.strength-caption{display:flex;gap:13px;align-items:center;margin-top:15px;color:#667078;font-size:12px}
.strength-caption span{color:var(--teal);font-weight:700}
.strength-caption p{margin:0}

/* Products */
.products-section{background:#fff}
.product-viewport{position:relative;overflow:hidden}
.product-track{display:flex;gap:16px;transition:transform .6s var(--ease);will-change:transform}
.product-card{position:relative;flex:0 0 calc((100% - 32px)/3);height:500px;overflow:hidden;background:#302d2b;color:#fff;isolation:isolate}
.product-card>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:saturate(.7);transition:transform .7s var(--ease),filter .5s}
.product-card-shade{position:absolute;inset:0;background:linear-gradient(0deg,rgba(23,24,23,.92),rgba(34,33,31,.7) 53%,rgba(39,36,34,.4));transition:background .4s}
.product-card::after{content:"";position:absolute;inset:0;border:2px solid transparent;transition:border-color .35s;pointer-events:none}
.product-card:hover>img{transform:scale(1.07);filter:saturate(1)}
.product-card:hover::after{border-color:rgba(128,218,213,.7)}
.product-card-content{position:absolute;z-index:2;left:30px;right:30px;bottom:26px}
.product-card-content>span{display:block;margin-bottom:18px;color:#8dd6d2;font-size:12px;letter-spacing:.2em}
.product-card-content h3{margin-bottom:12px;font-size:25px;font-weight:650}
.product-card-content p{max-width:370px;height:0;overflow:hidden;margin:0;color:rgba(255,255,255,.75);font-size:13px;opacity:0;transform:translateY(15px);transition:.4s var(--ease)}
.product-card:hover .product-card-content p{height:auto;min-height:47px;opacity:1;transform:translateY(0)}
.product-more{margin-top:16px;padding:0;border:0;background:none;color:#9ae0dc;font-size:13px}
.product-more:hover{color:#fff}
.product-arrow{position:absolute;z-index:3;top:50%;width:47px;height:47px;display:grid;place-items:center;transform:translateY(-50%);border:0;background:rgba(255,255,255,.9);color:var(--ink);box-shadow:0 8px 25px rgba(0,0,0,.18);opacity:0;transition:.25s var(--ease)}
.product-viewport:hover .product-arrow{opacity:1}
.product-arrow:hover{background:var(--teal);color:#fff}
.product-arrow svg{width:20px;height:20px}
.product-arrow--prev{left:0}
.product-arrow--next{right:0}
.product-dots{display:flex;justify-content:center;gap:8px;margin-top:24px}
.product-dots button{width:8px;height:8px;padding:0;border:0;border-radius:50%;background:#c9d0d2;transition:.25s}
.product-dots button.is-active{width:25px;border-radius:5px;background:var(--teal)}

/* Application */
.applications-section{padding-top:94px;background:var(--teal);color:#fff}
.application-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.application-tile{position:relative;height:430px;overflow:hidden;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:20px;isolation:isolate}
.application-tile img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .65s var(--ease),filter .5s;z-index:-2}
.application-tile::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(6,25,27,.68),rgba(6,25,27,.2));transition:background .4s;z-index:-1}
.application-tile:hover img{transform:scale(1.08);filter:saturate(1.12)}
.application-tile:hover::after{background:linear-gradient(0deg,rgba(6,66,64,.85),rgba(6,34,37,.3))}
.tile-icon{width:58px;height:58px;padding:12px;border:1px solid rgba(255,255,255,.72);color:#fff;transition:.35s var(--ease)}
.application-tile:hover .tile-icon{background:var(--teal);border-color:var(--teal);transform:rotate(-6deg) scale(1.08)}
.application-tile strong{font-size:17px;letter-spacing:.08em;text-shadow:0 2px 12px rgba(0,0,0,.3)}

/* Partner */
.partner-section{position:relative;min-height:355px;display:grid;place-items:center;overflow:hidden;background:#f7f7f4;text-align:center}
.partner-pattern{position:absolute;inset:-70px -30px;background-image:linear-gradient(30deg,rgba(33,139,134,.07) 12%,transparent 12.5%,transparent 87%,rgba(33,139,134,.07) 87.5%,rgba(33,139,134,.07)),linear-gradient(150deg,rgba(33,139,134,.07) 12%,transparent 12.5%,transparent 87%,rgba(33,139,134,.07) 87.5%,rgba(33,139,134,.07)),linear-gradient(30deg,rgba(33,139,134,.07) 12%,transparent 12.5%,transparent 87%,rgba(33,139,134,.07) 87.5%,rgba(33,139,134,.07)),linear-gradient(150deg,rgba(33,139,134,.07) 12%,transparent 12.5%,transparent 87%,rgba(33,139,134,.07) 87.5%,rgba(33,139,134,.07)),linear-gradient(60deg,rgba(213,164,77,.08) 25%,transparent 25.5%,transparent 75%,rgba(213,164,77,.08) 75%,rgba(213,164,77,.08));background-size:86px 150px;background-position:0 0,0 0,43px 75px,43px 75px,0 0;opacity:.8}
.partner-content{position:relative;z-index:1;max-width:760px;padding:55px 30px}
.partner-content .section-kicker{margin-bottom:17px}
.partner-content h2{margin-bottom:10px;font-size:clamp(34px,4vw,54px);font-weight:600}
.partner-content h2 span{color:var(--teal);font-weight:800}
.partner-content p{margin-bottom:25px;color:var(--muted);font-size:15px}

/* News */
.news-section{background:#fff}
.news-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:48px}
.news-heading h2{margin-bottom:0}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{position:relative;min-height:344px;padding:34px 30px 30px;background:#f7f8f8;border-bottom:3px solid transparent;transition:.35s var(--ease)}
.news-card:hover{background:#eef7f6;border-bottom-color:var(--teal);transform:translateY(-7px);box-shadow:0 18px 40px rgba(23,52,57,.1)}
.news-meta{display:flex;align-items:center;gap:10px;margin-bottom:24px;color:var(--teal);font-size:12px;letter-spacing:.08em}
.news-meta i{width:22px;height:1px;background:#a9c9c7}
.news-card h3{min-height:64px;margin-bottom:17px;font-size:20px;font-weight:650}
.news-card p{min-height:78px;color:var(--muted);font-size:13px;line-height:1.85}
.news-card a{color:var(--teal-dark);font-size:13px;font-weight:650}
.news-card a:hover{color:var(--teal)}

/* Footer */
.site-footer{background:linear-gradient(125deg,var(--teal-deep),var(--teal) 55%,#41aaa4);color:#fff}
.footer-main{display:grid;grid-template-columns:1.25fr .7fr .95fr 1.35fr;gap:55px;padding-top:67px;padding-bottom:58px}
.brand--footer .brand-mark{background:rgba(255,255,255,.17);box-shadow:none}
.brand--footer .brand-logo{width:46px;height:46px;flex-basis:46px;border:1px solid rgba(255,255,255,.18);background:#fff;padding:4px;box-shadow:none}
.brand--footer .brand-copy strong{font-size:17px}
.brand--footer .brand-copy small{color:rgba(255,255,255,.65)}
.footer-brand>p{max-width:300px;margin:23px 0 25px;color:rgba(255,255,255,.7);font-size:13px}
.footer-shop{display:inline-flex;align-items:center;gap:8px;padding:9px 14px;border:1px solid rgba(255,255,255,.45);border-radius:3px;font-size:12px;letter-spacing:.08em;transition:.25s}
.footer-shop:hover{background:#fff;color:var(--teal-dark)}
.footer-links,.footer-contact{display:flex;flex-direction:column;align-items:flex-start}
.footer-main h3{margin-bottom:22px;font-size:15px;letter-spacing:.08em}
.footer-links a{margin-bottom:9px;color:rgba(255,255,255,.7);font-size:13px;transition:.2s}
.footer-links a:hover{color:#fff;transform:translateX(4px)}
.footer-contact p{display:flex;gap:10px;align-items:flex-start;margin-bottom:14px;color:rgba(255,255,255,.78);font-size:13px}
.footer-contact svg{flex:0 0 17px;width:17px;height:17px;margin-top:4px;color:#b8ebe8}
.footer-contact a:hover{color:#fff;text-decoration:underline}
.footer-bottom{background:rgba(0,0,0,.16);font-size:11px;color:rgba(255,255,255,.65)}
.footer-bottom .shell{min-height:58px;display:flex;justify-content:space-between;align-items:center;gap:20px}
.footer-bottom a:hover{color:#fff}

/* Rail */
.side-rail{position:fixed;z-index:70;right:0;top:50%;display:flex;flex-direction:column;transform:translateY(-40%);box-shadow:0 12px 35px rgba(6,42,46,.2)}
.rail-button{position:relative;width:53px;height:53px;display:grid;place-items:center;border:0;border-bottom:1px solid rgba(255,255,255,.17);background:var(--teal);color:#fff;transition:.25s var(--ease)}
.rail-button:last-child{border-bottom:0}
.rail-button:hover{background:var(--teal-dark);width:62px}
.rail-button svg{width:21px;height:21px}
.rail-button span{position:absolute;right:calc(100% + 10px);top:50%;padding:5px 9px;background:#173f42;color:#fff;font-size:11px;white-space:nowrap;opacity:0;visibility:hidden;transform:translate(7px,-50%);transition:.23s}
.rail-button:hover span{opacity:1;visibility:visible;transform:translate(0,-50%)}
.rail-button--top{opacity:0;visibility:hidden;transform:translateY(8px);background:#2f373b}
.rail-button--top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}

/* Modal */
.modal{position:fixed;z-index:100;inset:0;display:grid;place-items:center;padding:25px;opacity:0;visibility:hidden;transition:.3s var(--ease)}
.modal.is-open{opacity:1;visibility:visible}
.modal-backdrop{position:absolute;inset:0;background:rgba(5,18,21,.68);backdrop-filter:blur(5px)}
.modal-card{position:relative;width:min(100%,570px);max-height:90vh;overflow:auto;padding:42px 43px 38px;background:#fff;box-shadow:0 30px 90px rgba(0,0,0,.3);transform:translateY(24px) scale(.98);transition:.38s var(--ease)}
.modal.is-open .modal-card{transform:translateY(0) scale(1)}
.modal-card h2{margin-bottom:12px;font-size:31px}
.modal-card>p:not(.section-kicker){color:var(--muted);font-size:14px}
.modal-close{position:absolute;right:17px;top:13px;width:35px;height:35px;border:0;background:transparent;color:#687177;font-size:28px;line-height:1}
.modal-close:hover{color:var(--teal);transform:rotate(90deg)}
#quoteForm{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px}
#quoteForm label{display:flex;flex-direction:column;gap:7px;color:var(--ink-soft);font-size:13px}
#quoteForm label.full,#quoteForm .full{grid-column:1/-1}
#quoteForm input,#quoteForm select,#quoteForm textarea{width:100%;border:1px solid #dce2e4;background:#fafbfb;padding:11px 12px;color:var(--ink);outline:none;transition:.2s}
#quoteForm input:focus,#quoteForm select:focus,#quoteForm textarea:focus{border-color:var(--teal);background:#fff;box-shadow:0 0 0 3px rgba(33,139,134,.11)}
#quoteForm textarea{resize:vertical}
.form-status{grid-column:1/-1;min-height:24px;margin:0!important;color:var(--teal-dark)!important;font-size:13px!important}

@media (max-width:1180px){
  .shell{width:min(calc(100% - 44px),var(--max))}
  .main-nav{gap:17px}
  .main-nav > a,.nav-dropdown-trigger{font-size:13px}
  .nav-dropdown-menu{width:280px}
  .nav-dropdown-submenu{width:210px}
  .nav-dropdown-item{min-height:58px;padding-inline:17px;font-size:14px}
  .nav-dropdown-submenu a{padding-left:24px;font-size:13px}
  .header-cta{padding-inline:13px}
  .brand-copy strong{font-size:14px}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .footer-main{grid-template-columns:1.2fr .8fr 1fr;gap:35px}
  .footer-contact{grid-column:1/-1}
}
@media (max-width:900px){
  :root{--header-height:68px}
  .shell{width:min(calc(100% - 36px),var(--max))}
  .site-header{height:var(--header-height)}
  .main-nav{position:fixed;inset:var(--header-height) 0 auto;display:flex;flex-direction:column;align-items:stretch;gap:0;margin:0;padding:10px 23px 24px;background:#fff;border-top:1px solid var(--line);box-shadow:0 18px 32px rgba(10,32,36,.16);opacity:0;visibility:hidden;transform:translateY(-14px);transition:.3s var(--ease)}
  .main-nav.is-open{opacity:1;visibility:visible;transform:translateY(0);max-height:calc(100vh - var(--header-height));overflow-y:auto;overscroll-behavior:contain}
  .main-nav > a,.nav-dropdown-trigger{padding:14px 2px;border-bottom:1px solid var(--line);font-size:15px}
  .main-nav > a::after,.nav-dropdown-trigger::after{bottom:0}
  .nav-dropdown{border-bottom:1px solid var(--line)}
  .nav-dropdown-trigger{width:100%;justify-content:space-between;padding:14px 2px;margin:0;border-bottom:0!important;background:transparent!important;color:inherit!important}
  .nav-dropdown:hover .nav-dropdown-trigger,.nav-dropdown:focus-within .nav-dropdown-trigger,.nav-dropdown.is-open .nav-dropdown-trigger{background:transparent!important;color:inherit!important}
  .nav-dropdown-menu,.nav-dropdown:hover .nav-dropdown-menu,.nav-dropdown:focus-within .nav-dropdown-menu{position:static;width:auto;max-height:0;padding:0 12px;overflow:hidden;border:0;box-shadow:none;opacity:0;visibility:hidden;pointer-events:none;transform:none;transition:max-height .35s var(--ease),opacity .2s,visibility .2s}
  .nav-dropdown.is-open .nav-dropdown-menu{max-height:calc(100vh - var(--header-height) - 72px);padding:0 12px 14px;overflow-y:auto;opacity:1;visibility:visible;pointer-events:auto}
  .nav-dropdown-item{min-height:54px;padding:0 3px;border-bottom:1px solid var(--line);font-size:15px}
  .nav-dropdown-item:hover,.nav-dropdown-item.is-active,.nav-dropdown-item:focus-visible{background:#f1f8f7;color:var(--teal-dark)}
  .nav-dropdown-submenu,.nav-dropdown-item:hover+.nav-dropdown-submenu,.nav-dropdown-item.is-active+.nav-dropdown-submenu,.nav-dropdown-item:focus+.nav-dropdown-submenu{position:static;left:auto;right:auto;top:auto;width:auto;max-height:0;padding:0 0 0 15px;overflow:hidden;border:0;border-left:1px solid #dce8e7;box-shadow:none;background:#f8fafa;opacity:0;visibility:hidden;pointer-events:none;transform:none;transition:max-height .3s var(--ease),opacity .18s,visibility .18s}
  .nav-dropdown-item.is-active+.nav-dropdown-submenu,.nav-dropdown-item:focus+.nav-dropdown-submenu{max-height:620px;overflow-y:auto;opacity:1;visibility:visible;pointer-events:auto}
  .nav-dropdown-submenu.is-flipped{right:auto}
  .nav-dropdown-submenu a{min-height:42px;padding:8px 7px 8px 14px;font-size:13.5px}
  .nav-dropdown-submenu a::before{left:0}
  .nav-dropdown-submenu a:hover,.nav-dropdown-submenu a:focus-visible{transform:none}
  .nav-toggle{display:flex}
  .header-cta{display:none}
  .hero{height:730px;min-height:0;max-height:none}
  .hero-content{padding-top:0}
  .hero-content h1{max-width:680px}
  .hero-arrow{opacity:1;width:42px;height:42px}
  .hero-arrow--prev{left:14px}
  .hero-arrow--next{right:14px}
  .scroll-cue{display:none}
  .section{padding:78px 0}
  .about-grid,.strength-grid{grid-template-columns:1fr;gap:48px}
  .about-copy h2{font-size:42px}
  .strength-grid{gap:52px}
  .strength-image{height:370px}
  .product-card{flex-basis:calc((100% - 16px)/2);height:455px}
  .application-grid{grid-template-columns:repeat(2,1fr)}
  .application-tile{height:350px}
  .news-grid{grid-template-columns:1fr;gap:16px}
  .news-card{min-height:0}
  .news-card h3,.news-card p{min-height:0}
  .footer-main{grid-template-columns:repeat(2,1fr)}
  .footer-contact{grid-column:auto}
  .side-rail{top:auto;bottom:0;transform:none;flex-direction:row}
  .rail-button{width:49px;height:47px;border-bottom:0;border-right:1px solid rgba(255,255,255,.17)}
  .rail-button:hover{width:49px}
  .rail-button span{display:none}
}
@media (max-width:600px){
  .shell{width:min(calc(100% - 28px),var(--max))}
  .brand-copy strong{max-width:172px;overflow:hidden;text-overflow:ellipsis}
  .brand-copy small{display:none}
  .language-trigger{width:40px;padding:0}
  .language-trigger .language-label,.language-trigger .language-chevron{display:none}
  .language-menu{right:-5px}
  .hero{height:690px}
  .hero-content{justify-content:center;padding-bottom:54px}
  .hero-eyebrow{font-size:11px;letter-spacing:.15em;margin-bottom:14px}
  .hero-content h1{font-size:43px;max-width:100%}
  .hero-text{font-size:14px;line-height:1.8}
  .hero-actions{width:100%}
  .hero-actions .button{flex:1;min-width:135px;padding-inline:15px}
  .hero-arrow{top:auto;bottom:23px;transform:none}
  .hero-arrow:hover{transform:none}
  .hero-arrow--prev{left:14px}
  .hero-arrow--next{right:14px}
  .hero-dots{bottom:42px}
  .section{padding:65px 0}
  .about-copy h2{font-size:35px}
  .about-copy .lead{font-size:15px}
  .media-frame,.media-frame img{min-height:0;height:340px}
  .feature-grid{grid-template-columns:1fr;margin-top:42px}
  .feature-card{min-height:0}
  .strength-section{padding:66px 0}
  .stat-number{font-size:52px}
  .strength-image{height:300px}
  .product-card{flex-basis:100%;height:430px}
  .product-arrow{opacity:1}
  .applications-section{padding-top:65px}
  .application-grid{grid-template-columns:1fr}
  .application-tile{height:315px}
  .partner-section{min-height:330px}
  .news-heading{align-items:flex-start;gap:24px;flex-direction:column}
  .news-card{padding:27px 23px 24px}
  .footer-main{grid-template-columns:1fr;padding-top:50px;padding-bottom:42px}
  .footer-bottom .shell{flex-direction:column;align-items:flex-start;justify-content:center;padding:16px 0}
  .modal{padding:12px}
  .modal-card{padding:35px 20px 25px}
  #quoteForm{grid-template-columns:1fr}
  #quoteForm label.full,#quoteForm .full{grid-column:auto}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
}

/* 产品卡片详情入口 */
.product-card-actions{display:flex;align-items:center;gap:16px;margin-top:16px}
.product-detail-link{color:#9ae0dc;font-size:13px;transition:.2s}
.product-detail-link:hover{color:#fff;letter-spacing:.02em}
.product-more{margin-top:0!important}