/* ==========================================================================
   Hebei Puwei Technology Co., Ltd. - Global Stylesheet
   Industrial instrument manufacturer website / pure static site
   Tokens: industrial blue #0f4c81 | deep blue #0a3358 | accent #c05f10
   ========================================================================== */

:root{
  --blue:#0f4c81;
  --blue-dark:#0a3358;
  --blue-deep:#082a47;
  --accent:#c05f10;
  --ink:#1b2733;
  --ink-soft:#3f4d5b;
  --muted:#6a7787;
  --line:#dde4ea;
  --line-strong:#c6d2dd;
  --bg:#ffffff;
  --bg-soft:#f5f8fb;
  --bg-grey:#edf1f6;
  --radius-card:4px;
  --radius-ctrl:3px;
  --shadow-1:0 1px 3px rgba(10,51,88,.07);
  --shadow-2:0 6px 18px rgba(10,51,88,.13);
  --maxw:1200px;
  --header-h:72px;
  --font:"Roboto","Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,Helvetica,sans-serif;
}

/* ---------------- reset ---------------- */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px);}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.8;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;}
img{display:block;max-width:100%;height:auto;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button{font-family:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0;}
input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;}

/* ---------------- layout ---------------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.section{padding:64px 0;}
.section--soft{background:var(--bg-soft);}
.section--grey{background:var(--bg-grey);}
.section--dark{background:var(--blue-dark);color:rgba(255,255,255,.82);}
.section--dark .section-head__title{color:#fff;}
.section--dark .section-head__desc{color:rgba(255,255,255,.72);}
.section--dark .section-head__kicker{color:#e8912f;}
.section--dark .section-head__kicker::before{background:#e8912f;}
.section--dark .text-block p{color:rgba(255,255,255,.78);}
.section--dark .contact-info__item{border-bottom-color:rgba(255,255,255,.16);}
.section--dark .contact-info__label{color:rgba(255,255,255,.62);}
.section--dark .contact-info__value{color:#fff;}
.section--dark .contact-tel{color:#fff;}
.section--tight{padding:44px 0;}
.site-main{padding-top:var(--header-h);}

.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.grid-6{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;}

/* ---------------- section head ---------------- */
.section-head{max-width:840px;margin:0 auto 44px;text-align:center;}
.section-head--left{margin-left:0;text-align:left;}
.section-head__kicker{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--accent);text-transform:none;}
.section-head__kicker::before{content:"";width:26px;height:2px;background:var(--accent);}
.section-head__title{margin-top:12px;font-size:30px;font-weight:700;line-height:1.4;color:var(--blue-dark);}
.section-head__desc{margin-top:14px;font-size:15px;color:var(--muted);}
.section-actions{margin-top:34px;text-align:center;}
.section-actions--left{text-align:left;}
.sub-title{margin-bottom:12px;font-size:16px;font-weight:700;color:var(--blue-dark);}
.form__actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------------- buttons ---------------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--radius-ctrl);border:1px solid transparent;font-size:15px;font-weight:500;line-height:1;transition:background-color .2s ease,border-color .2s ease,color .2s ease;}
.btn--primary{background:var(--blue);color:#fff;}
.btn--primary:hover{background:var(--blue-dark);}
.btn--accent{background:var(--accent);color:#fff;}
.btn--accent:hover{background:#a44f0c;}
.btn--ghost{border-color:var(--blue);color:var(--blue);background:transparent;}
.btn--ghost:hover{background:var(--blue);color:#fff;}
.btn--light{background:#fff;color:var(--blue-dark);}
.btn--light:hover{background:#e6eef5;}
.btn--outline-light{border-color:rgba(255,255,255,.6);color:#fff;background:transparent;}
.btn--outline-light:hover{background:rgba(255,255,255,.14);}
.btn--sm{height:36px;padding:0 16px;font-size:14px;}
.btn--block{width:100%;}

/* ---------------- header ---------------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:900;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s ease;}
.site-header.is-stuck{box-shadow:0 2px 10px rgba(10,51,88,.10);}
.header-inner{display:flex;align-items:center;gap:28px;height:var(--header-h);}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand__mark{width:38px;height:38px;flex:0 0 auto;}
.brand__text{display:flex;flex-direction:column;line-height:1.25;}
.brand__cn{font-size:17px;font-weight:700;color:var(--blue-dark);letter-spacing:.02em;}
.brand__en{font-size:11px;color:var(--muted);letter-spacing:.04em;}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav__link{position:relative;display:block;padding:8px 13px;font-size:15px;color:var(--ink-soft);white-space:nowrap;transition:color .2s ease;}
.nav__link:hover{color:var(--blue);}
.nav__link.is-active{color:var(--blue);font-weight:500;}
.nav__link.is-active::after{content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;background:var(--blue);}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.lang-switch{display:inline-flex;border:1px solid var(--line-strong);border-radius:var(--radius-ctrl);overflow:hidden;}
.lang-switch__btn{padding:7px 13px;font-size:13px;font-weight:500;color:var(--muted);background:#fff;border:0;line-height:1.2;transition:background-color .2s ease,color .2s ease;}
.lang-switch__btn:hover{color:var(--blue);}
.lang-switch__btn.is-active{background:var(--blue);color:#fff;}
.nav-toggle{display:none;width:42px;height:42px;padding:0;border:1px solid var(--line-strong);border-radius:var(--radius-ctrl);background:#fff;}
.nav-toggle__bars,.nav-toggle__bars::before,.nav-toggle__bars::after{display:block;width:20px;height:2px;background:var(--blue-dark);margin:0 auto;transition:transform .25s ease,opacity .2s ease;}
.nav-toggle__bars{position:relative;}
.nav-toggle__bars::before,.nav-toggle__bars::after{content:"";position:absolute;left:0;}
.nav-toggle__bars::before{top:-6px;}
.nav-toggle__bars::after{top:6px;}
.nav-toggle.is-open .nav-toggle__bars{background:transparent;}
.nav-toggle.is-open .nav-toggle__bars::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open .nav-toggle__bars::after{transform:translateY(-6px) rotate(-45deg);}

/* ---------------- hero banner ---------------- */
.hero{position:relative;overflow:hidden;background:var(--blue-deep);}
.hero__slide{position:absolute;inset:0;opacity:0;transition:opacity .8s ease;pointer-events:none;}
.hero__slide.is-active{opacity:1;pointer-events:auto;}
.hero__img{width:100%;height:100%;object-fit:cover;}
.hero__mask{position:absolute;inset:0;background:rgba(8,39,71,.62);}
.hero__content{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;justify-content:center;color:#fff;opacity:0;transition:opacity .8s ease;pointer-events:none;}
.hero__content.is-active{opacity:1;pointer-events:auto;}
.hero__inner{max-width:780px;padding:92px 0;}
.hero__kicker{display:inline-block;padding:5px 12px;border:1px solid rgba(255,255,255,.45);font-size:13px;letter-spacing:.08em;}
.hero__title{margin-top:20px;font-size:42px;font-weight:700;line-height:1.35;}
.hero__desc{margin-top:18px;max-width:640px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.88);}
.hero__btns{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px;}
.hero__dots{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:3;display:flex;gap:10px;}
.hero__dot{width:28px;height:3px;padding:0;border:0;background:rgba(255,255,255,.42);transition:background-color .25s ease;}
.hero__dot.is-active{background:#fff;}
.hero__arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:46px;height:46px;padding:0;border:1px solid rgba(255,255,255,.45);background:rgba(8,39,71,.28);color:#fff;font-size:20px;line-height:1;transition:background-color .25s ease;}
.hero__arrow:hover{background:rgba(8,39,71,.6);}
.hero__arrow--prev{left:22px;}
.hero__arrow--next{right:22px;}

/* ---------------- page hero (inner pages) ---------------- */
.page-hero{position:relative;background:var(--blue-dark);overflow:hidden;}
.page-hero__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.page-hero__mask{position:absolute;inset:0;background:rgba(8,39,71,.68);}
.page-hero__content{position:relative;z-index:2;padding:60px 0 56px;color:#fff;max-width:820px;}
.page-hero__title{font-size:32px;font-weight:700;line-height:1.4;}
.page-hero__desc{margin-top:12px;font-size:15px;color:rgba(255,255,255,.85);}
.breadcrumb{margin-top:16px;font-size:13px;color:rgba(255,255,255,.72);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}

/* ---------------- cards ---------------- */
.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease;}
.card--hover:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.card__media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-grey);}
.card__img{width:100%;height:100%;object-fit:cover;}
.card__badge{position:absolute;top:12px;left:12px;padding:3px 10px;background:var(--accent);color:#fff;font-size:12px;line-height:1.6;}
.card__body{display:flex;flex-direction:column;flex:1 1 auto;padding:22px 24px 26px;}
.card__title{font-size:18px;font-weight:700;color:var(--blue-dark);}
.card__desc{margin-top:10px;font-size:14px;color:var(--muted);flex:1 1 auto;}
.card__link{margin-top:16px;font-size:14px;font-weight:500;color:var(--blue);}
.card__link:hover{color:var(--accent);}
.card__meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);}
.card--link{cursor:pointer;}

/* ---------------- intro split ---------------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.split--wide-media{grid-template-columns:1.15fr .85fr;}
.split__media{border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--bg-grey);}
.split__img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.split__body .section-head{margin-bottom:24px;}
.text-block p{margin-bottom:14px;color:var(--ink-soft);font-size:15px;}
.text-block p:last-child{margin-bottom:0;}
.plain-list li{position:relative;padding-left:20px;margin-bottom:10px;color:var(--ink-soft);font-size:15px;}
.plain-list li::before{content:"";position:absolute;left:0;top:12px;width:8px;height:2px;background:var(--accent);}

/* ---------------- stats ---------------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat{background:#fff;border:1px solid var(--line);border-radius:0;padding:24px 20px;text-align:center;}
.stat__num{font-size:30px;font-weight:700;color:var(--blue);line-height:1.2;}
.stat__num small{font-size:16px;font-weight:700;}
.stat__label{margin-top:8px;font-size:13px;color:var(--muted);}

/* ---------------- values (about) ---------------- */
.value-card{padding:28px 26px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease;}
.value-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.value-card__icon{width:56px;height:56px;margin-bottom:16px;}
.value-card__title{font-size:18px;font-weight:700;color:var(--blue-dark);}
.value-card__desc{margin-top:10px;font-size:14px;color:var(--muted);}

/* ---------------- timeline ---------------- */
.timeline{position:relative;padding-left:34px;}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:var(--line-strong);}
.timeline__item{position:relative;padding:0 0 34px 22px;}
.timeline__item:last-child{padding-bottom:0;}
.timeline__dot{position:absolute;left:-30px;top:8px;width:14px;height:14px;background:#fff;border:3px solid var(--blue);border-radius:50%;}
.timeline__year{font-size:15px;font-weight:700;color:var(--accent);}
.timeline__title{margin-top:6px;font-size:18px;font-weight:700;color:var(--blue-dark);}
.timeline__desc{margin-top:8px;font-size:14px;color:var(--muted);max-width:760px;}

/* ---------------- certificates ---------------- */
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.cert-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;transition:transform .25s ease,box-shadow .25s ease;cursor:zoom-in;text-align:left;padding:0;width:100%;}
.cert-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.cert-card__media{aspect-ratio:4/5;background:#fff;border-bottom:1px solid var(--line);}
.cert-card__img{width:100%;height:100%;object-fit:cover;}
.cert-card__cap{padding:14px 18px 16px;font-size:14px;color:var(--ink-soft);}

/* ---------------- OEM flow ---------------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.flow__step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px 22px;box-shadow:var(--shadow-1);}
.flow__num{font-size:26px;font-weight:700;color:var(--line-strong);line-height:1;}
.flow__title{margin-top:10px;font-size:17px;font-weight:700;color:var(--blue-dark);}
.flow__desc{margin-top:8px;font-size:14px;color:var(--muted);}
.flow__step:not(:nth-child(4n))::after{content:"";position:absolute;right:-14px;top:50%;transform:translateY(-50%);width:0;height:0;border-top:6px solid transparent;border-bottom:6px solid transparent;border-left:8px solid var(--line-strong);}

/* ---------------- service modes ---------------- */
.mode-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease;}
.mode-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.mode-card__head{display:flex;align-items:center;gap:12px;padding:18px 22px;background:var(--bg-soft);border-bottom:1px solid var(--line);}
.mode-card__no{width:34px;height:34px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;background:var(--blue);color:#fff;font-size:15px;font-weight:700;border-radius:var(--radius-ctrl);}
.mode-card__title{font-size:17px;font-weight:700;color:var(--blue-dark);}
.mode-card__body{padding:20px 22px 24px;flex:1 1 auto;}
.mode-card__desc{font-size:14px;color:var(--muted);}
.mode-card__list{margin-top:12px;}

/* ---------------- FAQ ---------------- */
.faq{border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;overflow:hidden;}
.faq__item + .faq__item{border-top:1px solid var(--line);}
.faq__q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;background:#fff;border:0;text-align:left;font-size:16px;font-weight:500;color:var(--ink);transition:color .2s ease;}
.faq__q:hover{color:var(--blue);}
.faq__icon{position:relative;width:16px;height:16px;flex:0 0 auto;}
.faq__icon::before,.faq__icon::after{content:"";position:absolute;left:0;top:7px;width:16px;height:2px;background:var(--blue);transition:transform .25s ease;}
.faq__icon::after{transform:rotate(90deg);}
.faq__item.is-open .faq__icon::after{transform:rotate(0deg);}
.faq__a{display:none;padding:0 22px 20px 22px;font-size:15px;color:var(--muted);max-width:900px;}
.faq__item.is-open .faq__a{display:block;}

/* ---------------- product blocks ---------------- */
.product-block{padding:44px 0;border-bottom:1px solid var(--line);}
.product-block:last-child{border-bottom:0;}
.product-block__head{display:flex;align-items:flex-start;gap:20px;margin-bottom:26px;}
.product-block__no{flex:0 0 auto;width:52px;height:52px;display:flex;align-items:center;justify-content:center;background:var(--blue);color:#fff;font-size:20px;font-weight:700;border-radius:var(--radius-ctrl);}
.product-block__title{font-size:24px;font-weight:700;color:var(--blue-dark);line-height:1.4;}
.product-block__sub{margin-top:6px;font-size:14px;color:var(--accent);font-weight:500;}
.product-block__intro{margin-top:10px;font-size:15px;color:var(--ink-soft);max-width:900px;}
.product-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:26px;}
.product-gallery__item{position:relative;margin:0;padding:0;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:#fff;cursor:zoom-in;}
.product-gallery__img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.product-gallery__cap{padding:10px 14px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);}
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.spec-list{border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;}
.spec-list__head{padding:16px 20px;border-bottom:1px solid var(--line);font-size:16px;font-weight:700;color:var(--blue-dark);background:var(--bg-soft);}
.spec-list__item{display:flex;gap:16px;padding:14px 20px;font-size:14px;}
.spec-list__item + .spec-list__item{border-top:1px dashed var(--line);}
.spec-list__k{flex:0 0 118px;color:var(--muted);}
.spec-list__v{color:var(--ink);}
.oem-box{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--bg-soft);padding:22px 24px;}
.oem-box__title{font-size:16px;font-weight:700;color:var(--blue-dark);}
.oem-box__list{margin-top:12px;}
.oem-box__list li{position:relative;padding-left:18px;margin-bottom:8px;font-size:14px;color:var(--ink-soft);}
.oem-box__list li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:2px;background:var(--accent);}

/* ---------------- gallery (factory) ---------------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.gallery__item{position:relative;margin:0;padding:0;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:#fff;cursor:zoom-in;box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease;}
.gallery__item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.gallery__img{width:100%;aspect-ratio:3/2;object-fit:cover;}
.gallery__cap{padding:12px 16px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);}

/* ---------------- process list ---------------- */
.process-list{border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;overflow:hidden;}
.process-list__item{display:flex;gap:18px;padding:22px 24px;}
.process-list__item + .process-list__item{border-top:1px solid var(--line);}
.process-list__no{flex:0 0 auto;width:38px;height:38px;display:flex;align-items:center;justify-content:center;border:1px solid var(--blue);color:var(--blue);font-size:14px;font-weight:700;border-radius:var(--radius-ctrl);}
.process-list__title{font-size:17px;font-weight:700;color:var(--blue-dark);}
.process-list__desc{margin-top:6px;font-size:14px;color:var(--muted);}

/* ---------------- news filter & list ---------------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.filter-btn{padding:8px 18px;border:1px solid var(--line-strong);border-radius:var(--radius-ctrl);background:#fff;font-size:14px;color:var(--ink-soft);transition:background-color .2s ease,color .2s ease,border-color .2s ease;}
.filter-btn:hover{color:var(--blue);border-color:var(--blue);}
.filter-btn.is-active{background:var(--blue);border-color:var(--blue);color:#fff;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease;}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.news-card__media{aspect-ratio:16/10;overflow:hidden;background:var(--bg-grey);}
.news-card__img{width:100%;height:100%;object-fit:cover;}
.news-card__body{display:flex;flex-direction:column;flex:1 1 auto;padding:20px 22px 24px;}
.news-card__meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);}
.news-card__cat{padding:2px 8px;background:var(--bg-grey);color:var(--blue);font-size:12px;}
.news-card__cat--company{background:rgba(15,76,129,.10);}
.news-card__cat--industry{background:rgba(192,95,16,.12);color:var(--accent);}
.news-card__title{margin-top:12px;font-size:17px;font-weight:700;color:var(--blue-dark);line-height:1.6;}
.news-card__title a:hover{color:var(--blue);}
.news-card__summary{margin-top:10px;font-size:14px;color:var(--muted);flex:1 1 auto;}
.news-card__more{margin-top:14px;font-size:14px;color:var(--blue);font-weight:500;}
.news-card__more:hover{color:var(--accent);}
.news-empty{padding:40px 0;text-align:center;color:var(--muted);font-size:15px;}

/* ---------------- article ---------------- */
.article{max-width:860px;margin:0 auto;}
.article__head{text-align:center;margin-bottom:28px;}
.article__meta{margin-top:12px;font-size:13px;color:var(--muted);}
.article__title{font-size:30px;font-weight:700;color:var(--blue-dark);line-height:1.5;}
.article__img{width:100%;aspect-ratio:16/9;object-fit:cover;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--bg-grey);}
.article__cap{margin-top:10px;font-size:13px;color:var(--muted);text-align:center;}
.article__body{margin-top:28px;}
.article__p{margin-bottom:16px;color:var(--ink-soft);font-size:16px;line-height:1.85;}
.article__h2{margin:30px 0 14px;font-size:20px;font-weight:700;color:var(--blue-dark);}
.article__li{position:relative;padding-left:20px;margin-bottom:10px;color:var(--ink-soft);font-size:15px;}
.article__li::before{content:"";position:absolute;left:0;top:12px;width:8px;height:2px;background:var(--accent);}
.article__nav{display:flex;justify-content:space-between;gap:16px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line);}
.article__nav a{font-size:14px;color:var(--blue);}
.article__nav a:hover{color:var(--accent);}

/* ---------------- contact ---------------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:44px;align-items:start;}
.contact-info__item{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);}
.contact-info__item:last-child{border-bottom:0;}
.contact-info__label{flex:0 0 96px;font-size:14px;color:var(--muted);}
.contact-info__value{font-size:15px;color:var(--ink);font-weight:500;}
.contact-info__value a:hover{color:var(--blue);}
.contact-tel{font-size:24px;font-weight:700;color:var(--blue-dark);letter-spacing:.02em;}
.map-placeholder{position:relative;margin-top:26px;border:1px dashed var(--line-strong);border-radius:var(--radius-card);background:var(--bg-grey);aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;text-align:center;color:var(--muted);font-size:14px;padding:24px;}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-1);}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.form__field{margin-bottom:18px;}
.form__label{display:block;margin-bottom:7px;font-size:14px;color:var(--ink-soft);}
.form__label .req{color:var(--accent);}
.form__input,.form__textarea,.form__select{width:100%;padding:11px 14px;border:1px solid var(--line-strong);border-radius:var(--radius-ctrl);background:#fff;color:var(--ink);transition:border-color .2s ease;}
.form__input:focus,.form__textarea:focus,.form__select:focus{border-color:var(--blue);outline:none;}
.form__input.has-error,.form__textarea.has-error{border-color:#c0392b;}
.form__textarea{min-height:130px;resize:vertical;}
.form__error{display:none;margin-top:6px;font-size:13px;color:#c0392b;}
.form__error.is-show{display:block;}
.form__note{margin-top:12px;font-size:13px;color:var(--muted);}
.form__success{display:none;margin-bottom:16px;padding:12px 16px;border:1px solid var(--blue);border-radius:var(--radius-ctrl);background:var(--bg-soft);color:var(--blue);font-size:14px;}
.form__success.is-show{display:block;}
.cta-strip{background:var(--blue-dark);color:#fff;}
.cta-strip__inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;}
.cta-strip__title{font-size:24px;font-weight:700;}
.cta-strip__desc{margin-top:8px;font-size:15px;color:rgba(255,255,255,.8);}

/* ---------------- logo wall ---------------- */
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;}
.logo-wall__item{display:flex;align-items:center;justify-content:center;height:84px;border:1px solid var(--line);border-radius:0;background:#fff;}
.logo-wall__img{max-width:78%;max-height:52px;}

/* ---------------- lightbox ---------------- */
.lightbox{position:fixed;inset:0;z-index:1100;display:none;align-items:center;justify-content:center;padding:28px;}
.lightbox.is-open{display:flex;}
.lightbox__backdrop{position:absolute;inset:0;background:rgba(6,25,44,.84);border:0;}
.lightbox__box{position:relative;max-width:min(1020px,94vw);max-height:88vh;background:#fff;border-radius:var(--radius-card);overflow:hidden;display:flex;flex-direction:column;}
.lightbox__img{width:100%;max-height:74vh;object-fit:contain;background:var(--bg-grey);}
.lightbox__cap{padding:14px 18px;font-size:14px;color:var(--ink-soft);border-top:1px solid var(--line);}
.lightbox__close{position:absolute;top:10px;right:10px;width:36px;height:36px;border:0;border-radius:var(--radius-ctrl);background:rgba(8,39,71,.72);color:#fff;font-size:20px;line-height:1;}
.lightbox__arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:46px;height:46px;padding:0;border:0;background:rgba(255,255,255,.14);color:#fff;font-size:26px;line-height:1;transition:background-color .25s ease;}
.lightbox__arrow:hover{background:rgba(255,255,255,.3);}
.lightbox__arrow--prev{left:22px;}
.lightbox__arrow--next{right:22px;}

/* ---------------- back to top ---------------- */
.to-top{position:fixed;right:22px;bottom:26px;z-index:800;width:44px;height:44px;border:0;border-radius:var(--radius-ctrl);background:var(--blue);color:#fff;font-size:18px;line-height:1;opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease,background-color .2s ease;}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:hover{background:var(--blue-dark);}

/* ---------------- footer ---------------- */
.site-footer{background:var(--blue-dark);color:rgba(255,255,255,.76);font-size:14px;}
.footer-top{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:44px;padding:56px 0 42px;}
.footer-col__title{margin-bottom:16px;font-size:16px;font-weight:700;color:#fff;}
.footer-brand__name{font-size:20px;font-weight:700;color:#fff;line-height:1.5;}
.footer-brand__en{margin-top:2px;font-size:13px;color:rgba(255,255,255,.6);}
.footer-brand__desc{margin-top:14px;font-size:14px;color:rgba(255,255,255,.72);max-width:420px;}
.footer-links li + li{margin-top:9px;}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-contact li + li{margin-top:10px;}
.footer-contact .label{display:block;font-size:13px;color:rgba(255,255,255,.55);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:20px 0 24px;display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:center;font-size:13px;color:rgba(255,255,255,.6);}
.footer-bottom__left{justify-self:start;}
.footer-bottom__center{justify-self:center;text-align:center;}
.footer-bottom__right{justify-self:end;text-align:right;}
.beian{color:rgba(255,255,255,.72);}
.beian__link{color:rgba(255,255,255,.72);text-decoration:none;}
.beian__link:hover{color:#fff;text-decoration:underline;}

/* ---------------- 404 ---------------- */
.notfound{padding:96px 0 110px;text-align:center;}
.notfound__code{font-size:72px;font-weight:700;color:var(--blue);line-height:1;}
.notfound__title{margin-top:18px;font-size:26px;font-weight:700;color:var(--blue-dark);}
.notfound__desc{margin-top:12px;font-size:15px;color:var(--muted);}
.notfound__btns{margin-top:30px;display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}

/* ---------------- news admin ---------------- */
.admin-wrap{padding:44px 0 72px;}
.admin-card{max-width:980px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);padding:30px;}
.admin-card__title{font-size:22px;font-weight:700;color:var(--blue-dark);}
.admin-tip{margin-top:10px;padding:12px 16px;border:1px solid var(--accent);border-radius:var(--radius-ctrl);background:rgba(192,95,16,.08);color:#8a4508;font-size:14px;}
.admin-output{margin-top:22px;}
.admin-output__title{font-size:15px;font-weight:700;color:var(--blue-dark);margin-bottom:10px;}
.admin-textarea{width:100%;min-height:280px;padding:14px;border:1px solid var(--line-strong);border-radius:var(--radius-ctrl);font-family:"Consolas","Courier New",monospace;font-size:12px;line-height:1.6;color:var(--ink);background:var(--bg-soft);}
.admin-list{margin-top:24px;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;}
.admin-list__head{padding:14px 18px;background:var(--bg-soft);border-bottom:1px solid var(--line);font-size:15px;font-weight:700;color:var(--blue-dark);}
.admin-list__item{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 18px;font-size:14px;}
.admin-list__item + .admin-list__item{border-top:1px dashed var(--line);}
.admin-list__actions{display:flex;gap:8px;}
.admin-list__btn{padding:5px 12px;border:1px solid var(--line-strong);border-radius:var(--radius-ctrl);background:#fff;font-size:13px;color:var(--ink-soft);}
.admin-list__btn:hover{color:var(--blue);border-color:var(--blue);}
.admin-list__btn--danger:hover{color:#c0392b;border-color:#c0392b;}
.admin-hint{margin-top:16px;font-size:13px;color:var(--muted);}
.admin-hint code{background:var(--bg-grey);padding:1px 5px;border-radius:2px;font-size:12px;}

/* ---------------- responsive ---------------- */
@media (max-width:1100px){
  .nav__link{padding:8px 10px;font-size:14px;}
  .header-inner{gap:18px;}
  .hero__title{font-size:36px;}
}

@media (max-width:980px){
  .nav-toggle{display:block;}
  .nav{position:absolute;top:var(--header-h);left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:0;margin-left:0;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);box-shadow:0 12px 20px rgba(10,51,88,.10);}
  .nav.is-open{display:flex;}
  .nav__link{padding:14px 24px;font-size:16px;border-bottom:1px solid var(--line);}
  .nav__item:last-child .nav__link{border-bottom:0;}
  .nav__link.is-active::after{display:none;}
  .nav__link.is-active{background:var(--bg-soft);}
  .lang-switch{margin-left:auto;}
  .grid-4,.grid-6,.flow,.logo-wall{grid-template-columns:repeat(3,1fr);}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .split,.split--wide-media{grid-template-columns:1fr;gap:32px;}
  .contact-grid{grid-template-columns:1fr;gap:32px;}
  .product-detail{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-top .footer-col:first-child{grid-column:1 / -1;}
}

@media (max-width:820px){
  :root{--header-h:64px;}
  .section{padding:48px 0;}
  .hero__inner{padding:66px 0 60px;}
  .hero__title{font-size:30px;}
  .hero__arrow{display:none;}
  .page-hero__title{font-size:26px;}
  .section-head__title{font-size:26px;}
  .grid-2,.grid-3,.grid-4,.grid-6,.news-grid,.gallery,.product-gallery,.cert-grid,.flow,.logo-wall{grid-template-columns:1fr;}
  .cert-grid,.gallery,.product-gallery,.news-grid{grid-template-columns:repeat(2,1fr);}
  .form__row{grid-template-columns:1fr;gap:0;}
  .footer-bottom{grid-template-columns:1fr;gap:8px;text-align:center;}
  .footer-bottom__left,.footer-bottom__center,.footer-bottom__right{justify-self:center;text-align:center;}
  .timeline{padding-left:26px;}
  .timeline__item{padding-left:16px;}
  .timeline__dot{left:-24px;width:12px;height:12px;}
  .flow__step:not(:nth-child(4n))::after{display:none;}
  .admin-card{padding:22px;}
}

@media (max-width:560px){
  .container{padding:0 18px;}
  .hero__inner{padding:56px 0 56px;}
  .hero__title{font-size:26px;}
  .hero__desc{font-size:15px;}
  .hero__btns .btn{width:100%;}
  .hero__dots{bottom:18px;}
  .brand__cn{font-size:15px;}
  .brand__en{display:none;}
  .cert-grid,.gallery,.product-gallery,.news-grid,.logo-wall,.stat-grid,.flow{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .section-head__title{font-size:23px;}
  .page-hero__content{padding:44px 0 42px;}
  .article__title{font-size:23px;}
  .notfound__code{font-size:56px;}
  .cta-strip__inner{flex-direction:column;align-items:flex-start;}
  .to-top{right:14px;bottom:16px;}
  .lightbox{padding:14px;}
  .lightbox__img{max-height:62vh;}
}

@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;}
  html{scroll-behavior:auto;}
}