/* ==========================================================================
   Saiona Home — Furniture & Home Products Export Website
   Design: Modern, warm, premium furniture brand for global buyers
   ========================================================================== */

/* ---------- Design Tokens ---------- */
:root {
  --color-cream: #FAF8F4;
  --color-white: #FFFFFF;
  --color-sand: #F1EBE2;
  --color-walnut: #3E2F25;
  --color-charcoal: #2A2A28;
  --color-cocoa: #5A4636;
  --color-bronze: #A9753F;
  --color-bronze-dark: #8F6233;
  --color-bronze-light: #C89B6A;
  --color-text: #3A3630;
  --color-text-light: #7A7267;
  --color-line: #E7E0D6;
  --font-serif: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --container: 1200px;
  --shadow-sm: 0 2px 12px rgba(62,47,37,.08);
  --shadow-md: 0 10px 30px rgba(62,47,37,.12);
  --shadow-lg: 0 20px 50px rgba(62,47,37,.18);
  --radius: 10px;
  --transition: all .3s ease;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
/* 防止任何元素在小屏造成横向滚动/右侧空白 */
html, body { overflow-x: hidden; }
body { width: 100%; max-width: 100%; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-cream);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.section { padding: 96px 0; }
.section--tight { padding: 72px 0; }
.section--dark { background: var(--color-walnut); color: #F5EFE6; }
.section--sand { background: var(--color-sand); }

/* ---------- Typography ---------- */
h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 600; color: var(--color-walnut); line-height: 1.25; }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head .eyebrow {
  display: inline-block; font-size: 12px; letter-spacing: 3px; text-transform: uppercase;
  color: var(--color-bronze); font-weight: 600; margin-bottom: 14px;
}
.section-head h2 { font-size: 40px; margin-bottom: 16px; }
.section-head p { color: var(--color-text-light); font-size: 17px; }

.section--dark .section-head h2 { color: #F5EFE6; }
.section--dark .section-head p { color: #CBBFAE; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 15px 34px; font-size: 14px; font-weight: 600; letter-spacing: .5px;
  border-radius: 4px; transition: var(--transition); text-transform: uppercase;
}
.btn--primary { background: var(--color-bronze); color: #fff; }
.btn--primary:hover { background: var(--color-bronze-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--outline { border: 1.5px solid var(--color-walnut); color: var(--color-walnut); }
.btn--outline:hover { background: var(--color-walnut); color: #fff; }
.btn--light { border: 1.5px solid #F5EFE6; color: #F5EFE6; }
.btn--light:hover { background: #F5EFE6; color: var(--color-walnut); }
.btn--sm { padding: 11px 22px; font-size: 13px; }
.header .btn--primary { color: #fff; padding-left: 5px; padding-right: 5px; }

/* ---------- Top Bar ---------- */
.topbar { background: var(--color-walnut); color: #CBBFAE; font-size: 13px; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; min-height: 38px; gap: 16px; }
.topbar a { color: #CBBFAE; }
.topbar a:hover { color: #fff; }
.topbar .topbar-left { display: flex; gap: 22px; align-items: center; }
.topbar .topbar-right { display: flex; gap: 18px; align-items: center; }
.topbar i { margin-right: 6px; opacity: .8; }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(250,248,244,.95); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-line);
}
.header .container { display: flex; align-items: center; justify-content: space-between; height: 78px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo .logo-mark {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--color-walnut); color: var(--color-bronze-light);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif); font-size: 20px; font-weight: 700;
}
.logo .logo-text { font-family: var(--font-serif); font-size: 23px; font-weight: 700; color: var(--color-walnut); letter-spacing: .5px; }
.logo .logo-text span { color: var(--color-bronze); }
.logo .logo-sub { display: block; font-family: var(--font-sans); font-size: 10px; letter-spacing: 2.5px; text-transform: uppercase; color: var(--color-text-light); font-weight: 500; }

.nav { display: flex; align-items: center; gap: 34px; }
.nav a { font-size: 14px; font-weight: 500; color: var(--color-text); position: relative; padding: 6px 0; }
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 2px;
  background: var(--color-bronze); transition: var(--transition);
}
.nav a:hover, .nav a.active { color: var(--color-bronze-dark); }
.nav a:hover::after, .nav a.active::after { width: 100%; }
.header .btn { margin-left: 8px; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--color-walnut); transition: var(--transition); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 86vh; display: flex; align-items: center; overflow: hidden; }
.hero-slider { position: absolute; inset: 0; }
.hero-slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity 1s ease; }
.hero-slide.active { opacity: 1; visibility: visible; }
.hero-slide img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hero-slider::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(36,27,20,.5) 0%, rgba(36,27,20,.35) 45%, rgba(36,27,20,.22) 100%);
}
.hero-dots { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 3; }
.hero-dots .dot { width: 10px; height: 10px; border-radius: 50%; border: none; padding: 0; background: rgba(255,255,255,.45); cursor: pointer; transition: background .3s, transform .3s; }
.hero-dots .dot.active { background: #fff; transform: scale(1.25); }
.hero-content { position: relative; z-index: 2; max-width: 620px; color: #fff; padding: 60px 0; }
.hero-content .eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 12px; letter-spacing: 3px; text-transform: uppercase;
  color: var(--color-bronze-light); font-weight: 600; margin-bottom: 22px;
}
.hero-content .eyebrow::before { content: ""; width: 44px; height: 1px; background: var(--color-bronze-light); }
.hero-content h1 { font-size: 62px; color: #fff; margin-bottom: 22px; line-height: 1.15; }
.hero-content p { font-size: 18px; color: rgba(255,255,255,.9); margin-bottom: 36px; max-width: 480px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-badges { display: flex; gap: 28px; margin-top: 44px; flex-wrap: wrap; }
.hero-badges .badge { display: flex; align-items: center; gap: 10px; font-size: 13.5px; color: rgba(255,255,255,.92); }
.hero-badges .badge i { font-size: 18px; color: var(--color-bronze-light); }

/* ---------- Trust Bar ---------- */
.trustbar { border-bottom: 1px solid var(--color-line); background: var(--color-white); }
.trustbar .container { display: grid; grid-template-columns: repeat(4, 1fr); }
.trustbar-item { display: flex; align-items: center; justify-content: center; gap: 14px; padding: 26px 16px; border-left: 1px solid var(--color-line); }
.trustbar-item:first-child { border-left: none; }
.trustbar-item .num { font-family: var(--font-serif); font-size: 34px; font-weight: 700; color: var(--color-bronze); line-height: 1; flex-shrink: 0; }
.trustbar-item .txt { font-size: 13px; color: var(--color-text-light); line-height: 1.4; min-width: 0; overflow-wrap: break-word; word-break: break-word; }

/* ---------- Category Grid ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.cat-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: var(--transition);
}
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.cat-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.cat-card:hover img { transform: scale(1.06); }
.cat-card .cat-body { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(36,27,20,.85)); display: flex; flex-direction: column; justify-content: flex-end; padding: 26px; }
.cat-card .cat-title { color: #fff; font-family: var(--font-serif); font-size: 23px; margin-bottom: 6px; }
.cat-card .cat-meta { color: rgba(255,255,255,.85); font-size: 13px; letter-spacing: .5px; }
.cat-card .cat-link { position: absolute; top: 20px; right: 20px; width: 42px; height: 42px; border-radius: 50%; background: rgba(255,255,255,.16); color: #fff; display: flex; align-items: center; justify-content: center; backdrop-filter: blur(4px); opacity: 0; transition: var(--transition); }
.cat-card:hover .cat-link { opacity: 1; }
.cat-card .aspect { aspect-ratio: 4/5; }

/* ---------- Products Grid ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.prod-card {
  background: var(--color-white); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--color-line); transition: var(--transition);
}
.prod-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.prod-card .prod-img { position: relative; overflow: hidden; aspect-ratio: 1/1; }
.prod-card .prod-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.prod-card:hover .prod-img img { transform: scale(1.05); }
.prod-card .prod-tag {
  position: absolute; top: 14px; left: 14px; background: var(--color-bronze); color: #fff;
  font-size: 11px; letter-spacing: 1px; text-transform: uppercase; padding: 5px 12px; border-radius: 3px;
}
.prod-card .prod-body { padding: 20px 20px 22px; }
.prod-card .prod-cat { font-size: 12px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--color-bronze); font-weight: 600; margin-bottom: 6px; }
.prod-card .prod-name { font-family: var(--font-serif); font-size: 19px; color: var(--color-walnut); margin-bottom: 8px; }
.prod-card .prod-desc { font-size: 14px; color: var(--color-text-light); margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.prod-card .prod-foot { display: flex; align-items: center; justify-content: space-between; }
.prod-card .prod-spec { font-size: 12.5px; color: var(--color-text-light); }
.prod-card .prod-more { font-size: 13px; font-weight: 600; color: var(--color-bronze-dark); }
.prod-card .prod-more:hover { color: var(--color-walnut); }

/* ---------- Why Choose ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.feature-card {
  background: var(--color-white); border: 1px solid var(--color-line);
  border-radius: var(--radius); padding: 34px 28px; transition: var(--transition); position: relative;
}
.feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.feature-card .f-icon {
  width: 60px; height: 60px; border-radius: 50%; background: var(--color-sand);
  display: flex; align-items: center; justify-content: center; margin-bottom: 22px;
  font-size: 26px; color: var(--color-bronze-dark);
}
.feature-card h3 { font-size: 20px; margin-bottom: 12px; }
.feature-card p { font-size: 14.5px; color: var(--color-text-light); }

/* ---------- Factory Split ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split .split-img { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); }
.split .split-img img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; }
.split .split-img .exp {
  position: absolute; bottom: 22px; left: 22px; background: rgba(250,248,244,.95);
  border-radius: 8px; padding: 16px 22px; display: flex; align-items: center; gap: 14px;
}
.split .split-img .exp .num { font-family: var(--font-serif); font-size: 40px; font-weight: 700; color: var(--color-bronze); line-height: 1; }
.split .split-img .exp .txt { font-size: 13px; color: var(--color-text-light); }
.split .split-body .eyebrow { display: inline-block; font-size: 12px; letter-spacing: 3px; text-transform: uppercase; color: var(--color-bronze); font-weight: 600; margin-bottom: 14px; }
.split .split-body h2 { font-size: 38px; margin-bottom: 18px; }
.split .split-body > p { color: var(--color-text-light); margin-bottom: 28px; font-size: 16.5px; }
.split-list { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 34px; }
.split-list li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--color-text); }
.split-list li i { color: var(--color-bronze); margin-top: 3px; flex-shrink: 0; }

/* ---------- CTA Banner ---------- */
.cta-banner {
  background: linear-gradient(120deg, var(--color-walnut), #553F2E);
  text-align: center; padding: 84px 24px; color: #F5EFE6; position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ""; position: absolute; width: 420px; height: 420px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.12); top: -180px; right: -120px;
}
.cta-banner::after {
  content: ""; position: absolute; width: 320px; height: 320px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.1); bottom: -150px; left: -100px;
}
.cta-banner h2 { color: #fff; font-size: 40px; margin-bottom: 16px; position: relative; z-index: 2; }
.cta-banner p { color: #CBBFAE; margin-bottom: 32px; font-size: 17px; position: relative; z-index: 2; }
.cta-banner .btn { position: relative; z-index: 2; }

/* ---------- Footer ---------- */
.footer { background: #221A13; color: #B7AB9C; padding: 72px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 48px; padding-bottom: 56px; }
.footer h4 { font-family: var(--font-serif); color: #F5EFE6; font-size: 17px; margin-bottom: 20px; }
.footer .f-about p { font-size: 14.5px; line-height: 1.8; margin-top: 18px; }
.footer .f-links li { margin-bottom: 12px; }
.footer .f-links a { font-size: 14.5px; color: #B7AB9C; }
.footer .f-links a:hover { color: var(--color-bronze-light); padding-left: 4px; }
.footer .f-contact li { display: flex; gap: 12px; margin-bottom: 14px; font-size: 14.5px; }
.footer .f-contact i { color: var(--color-bronze-light); margin-top: 4px; flex-shrink: 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 22px 0; font-size: 13.5px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.footer-copy { display: inline-flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.footer-icp { color: #8F8372; text-decoration: none; font-size: 12.5px; }
.footer-icp:hover { color: var(--color-bronze-light); }

/* ---------- Page Hero (inner) ---------- */
.page-hero {
  background: var(--color-walnut); color: #F5EFE6; padding: 74px 0 66px; position: relative; overflow: hidden;
}
.page-hero::after {
  content: ""; position: absolute; width: 380px; height: 380px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.08); top: -160px; right: -90px;
}
.page-hero .eyebrow { display: inline-block; font-size: 12px; letter-spacing: 3px; text-transform: uppercase; color: var(--color-bronze-light); font-weight: 600; margin-bottom: 12px; }
.page-hero h1 { color: #fff; font-size: 46px; margin-bottom: 14px; }
.page-hero p { color: #CBBFAE; font-size: 17px; max-width: 640px; }

/* ---------- Breadcrumb ---------- */
.breadcrumb { font-size: 13px; color: #CBBFAE; margin-top: 18px; }
.breadcrumb a { color: #CBBFAE; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { margin: 0 8px; opacity: .5; }

/* ---------- Product Filters ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-bottom: 44px; }
.filter-btn {
  padding: 10px 22px; border: 1.5px solid var(--color-line); border-radius: 30px;
  font-size: 14px; font-weight: 500; color: var(--color-text); background: var(--color-white); transition: var(--transition);
}
.filter-btn:hover { border-color: var(--color-bronze); color: var(--color-bronze-dark); }
.filter-btn.active { background: var(--color-walnut); border-color: var(--color-walnut); color: #fff; }

/* ---------- Product Detail ---------- */
.pd { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: start; }
.pd-gallery { position: sticky; top: 110px; }
.pd-main { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--color-line); box-shadow: var(--shadow-sm); }
.pd-main img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
.pd-thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 14px; }
.pd-thumbs img { aspect-ratio: 1/1; object-fit: cover; border-radius: 6px; border: 2px solid transparent; cursor: pointer; transition: var(--transition); }
.pd-thumbs img.active, .pd-thumbs img:hover { border-color: var(--color-bronze); }
.pd-info .pd-cat { font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--color-bronze); font-weight: 600; }
.pd-info h1 { font-size: 36px; margin: 10px 0 16px; }
.pd-info .pd-short { color: var(--color-text-light); font-size: 16px; margin-bottom: 24px; }
.pd-specs { border: 1px solid var(--color-line); border-radius: var(--radius); margin-bottom: 26px; overflow: hidden; }
.pd-specs .row { display: flex; justify-content: space-between; padding: 13px 20px; font-size: 14.5px; }
.pd-specs .row:nth-child(odd) { background: var(--color-white); }
.pd-specs .row span:first-child { color: var(--color-text-light); }
.pd-specs .row span:last-child { font-weight: 500; color: var(--color-walnut); }
.pd-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.pd-feature-list li { display: flex; gap: 10px; margin-bottom: 12px; font-size: 15px; }
.pd-feature-list i { color: var(--color-bronze); margin-top: 3px; }
.pd-desc h3 { font-size: 24px; margin-bottom: 16px; }
.pd-desc p { color: var(--color-text-light); margin-bottom: 16px; font-size: 15.5px; }

/* ---------- Inquiry Form ---------- */
.form-card { background: var(--color-white); border: 1px solid var(--color-line); border-radius: var(--radius); padding: 34px; box-shadow: var(--shadow-sm); }
.form-card h3 { font-size: 24px; margin-bottom: 6px; }
.form-card > p { color: var(--color-text-light); font-size: 14.5px; margin-bottom: 24px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13.5px; font-weight: 600; color: var(--color-walnut); margin-bottom: 7px; }
.form-group label .req { color: var(--color-bronze); }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 13px 16px; border: 1.5px solid var(--color-line); border-radius: 6px;
  background: var(--color-cream); color: var(--color-text); transition: var(--transition); outline: none;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--color-bronze); background: #fff; }
.form-group textarea { min-height: 120px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-note { font-size: 12.5px; color: var(--color-text-light); margin-top: 14px; }
.form-success {
  display: none; background: #EAF5EC; border: 1px solid #BFE3C7; color: #2E6B3A;
  padding: 16px 18px; border-radius: 6px; font-size: 14.5px; margin-bottom: 20px;
}

/* ---------- Contact Page ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: start; }
.contact-info-card { background: var(--color-walnut); color: #CBBFAE; border-radius: var(--radius); padding: 38px; }
.contact-info-card h3 { color: #fff; font-size: 24px; margin-bottom: 22px; }
.contact-info-card li { display: flex; gap: 16px; margin-bottom: 24px; align-items: flex-start; }
.contact-info-card li i { width: 42px; height: 42px; border-radius: 50%; background: rgba(255,255,255,.1); display: flex; align-items: center; justify-content: center; color: var(--color-bronze-light); flex-shrink: 0; }
.contact-info-card li strong { display: block; color: #F5EFE6; font-size: 15px; margin-bottom: 2px; }
.contact-info-card li span { font-size: 14px; }

/* ---------- About Page ---------- */
.about-lead { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-lead .al-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); }
.about-lead .al-img img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; }
.about-lead .eyebrow { display: inline-block; font-size: 12px; letter-spacing: 3px; text-transform: uppercase; color: var(--color-bronze); font-weight: 600; margin-bottom: 14px; }
.about-lead h2 { font-size: 36px; margin-bottom: 18px; }
.about-lead p { color: var(--color-text-light); margin-bottom: 16px; }
.mission-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.mission-card { text-align: center; background: var(--color-white); border: 1px solid var(--color-line); border-radius: var(--radius); padding: 40px 26px; }
.mission-card i { font-size: 38px; color: var(--color-bronze); margin-bottom: 18px; }
.mission-card h3 { font-size: 20px; margin-bottom: 12px; }
.mission-card p { font-size: 14.5px; color: var(--color-text-light); }
.timeline { max-width: 780px; margin: 0 auto; position: relative; padding-left: 36px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px; background: var(--color-line); }
.timeline-item { position: relative; padding-bottom: 40px; }
.timeline-item::before { content: ""; position: absolute; left: -33px; top: 6px; width: 14px; height: 14px; border-radius: 50%; background: var(--color-bronze); border: 3px solid var(--color-cream); box-shadow: 0 0 0 2px var(--color-bronze); }
.timeline-item .year { font-family: var(--font-serif); font-size: 22px; font-weight: 700; color: var(--color-bronze-dark); margin-bottom: 6px; }
.timeline-item p { color: var(--color-text-light); font-size: 15px; }

/* ---------- Certifications ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.cert-card { background: var(--color-white); border: 1px solid var(--color-line); border-radius: var(--radius); padding: 26px 16px; text-align: center; transition: var(--transition); }
.cert-card:hover { box-shadow: var(--shadow-sm); }
.cert-card .cert-badge { width: 54px; height: 54px; margin: 0 auto 14px; border-radius: 50%; background: var(--color-sand); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 15px; color: var(--color-bronze-dark); }
.cert-card .cert-name { font-weight: 600; font-size: 15px; color: var(--color-walnut); }
.cert-card .cert-sub { font-size: 12.5px; color: var(--color-text-light); margin-top: 4px; }

/* ---------- Animation ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .prod-grid { grid-template-columns: repeat(3, 1fr); }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .split, .about-lead, .pd, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .pd-gallery { position: static; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 30px; }
  .hero-content h1 { font-size: 42px; }
  .hero { min-height: 72vh; }
  .nav { display: none; position: absolute; top: 78px; left: 0; right: 0; background: var(--color-cream); flex-direction: column; gap: 0; padding: 20px 24px; border-bottom: 1px solid var(--color-line); box-shadow: var(--shadow-md); }
  .nav.open { display: flex; }
  .nav a { padding: 14px 0; width: 100%; border-bottom: 1px solid var(--color-line); }
  .nav .btn { margin: 16px 0 0; }
  .nav-toggle { display: flex; }
  .trustbar .container { grid-template-columns: repeat(2, 1fr); }
  .trustbar-item { border-left: none; border-bottom: 1px solid var(--color-line); }
  .cat-grid { grid-template-columns: 1fr; }
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: 1fr; }
  .split-list { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 34px; }
  .cta-banner h2 { font-size: 30px; }
  .topbar .topbar-right { display: none; }
  .timeline { padding-left: 30px; }
}

@media (max-width: 480px) {
  .prod-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-badges { gap: 16px; }
}

/* 极窄屏：顶栏只保留电话，避免溢出导致右侧空白/横向滚动 */
@media (max-width: 560px) {
  .topbar .topbar-left { gap: 10px; font-size: 12.5px; }
  .topbar .topbar-left > span:last-child { display: none; }
  .topbar .container { justify-content: center; }
  /* 信任数据条：窄格改为纵向排列，文字用满整格宽度，完整显示不截断 */
  .trustbar-item { flex-direction: column; gap: 4px; padding: 18px 8px; text-align: center; }
  .trustbar-item .num { font-size: 30px; }
  .trustbar-item .txt { font-size: 12px; }
  /* 压缩 hero，避免首屏被撑高导致内容显示不全 */
  .hero { min-height: auto; }
  .hero-content { padding: 32px 0 40px; }
  .hero-content .eyebrow { font-size: 11px; margin-bottom: 12px; }
  .hero-content h1 { font-size: 33px; margin-bottom: 12px; }
  .hero-content p { font-size: 14.5px; margin-bottom: 20px; }
  .hero-cta { gap: 12px; }
  .hero-cta .btn { width: 100%; padding: 12px 20px; }
  .hero-badges { gap: 6px 14px; margin-top: 22px; }
  .hero-badges .badge { font-size: 11.5px; }
  .hero-dots { bottom: 14px; gap: 8px; }
  .hero-dots .dot { width: 8px; height: 8px; }
  .section-head h2 { font-size: 28px; }
  .split .split-img .exp { padding: 12px 16px; }
  .split .split-img .exp .num { font-size: 32px; }
}

/* ==========================================================================
   News（新闻列表 / 首页 Latest News / 新闻详情）
   ========================================================================== */
.sec-head { text-align: center; max-width: 760px; margin: 0 auto 42px; }
.sec-head h2 { font-family: var(--font-serif); font-size: 34px; line-height: 1.2; margin: 8px 0 10px; color: var(--color-walnut); }
.sec-head p { color: var(--color-text-light); max-width: 620px; margin: 0 auto; }
.sec-head .btn { margin-top: 20px; }

.news-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-card { background: #fff; border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s; display: flex; flex-direction: column; }
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.news-card-img { display: block; aspect-ratio: 16/10; overflow: hidden; background: var(--color-sand); }
.news-card-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.news-card-body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.news-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.news-tag { background: var(--color-sand); color: var(--color-walnut); font-size: 12px; padding: 3px 10px; border-radius: 20px; font-weight: 600; }
.news-meta time { color: var(--color-text-light); font-size: 13px; }
.news-card-body h3 { font-family: var(--font-serif); font-size: 19px; line-height: 1.4; margin: 0 0 8px; }
.news-card-body h3 a { color: var(--color-walnut); }
.news-card-body h3 a:hover { color: var(--color-bronze); }
.news-card-body p { color: var(--color-text-light); font-size: 14px; line-height: 1.65; margin: 0 0 14px; flex: 1; }
.news-more { color: var(--color-bronze); font-weight: 600; font-size: 14px; }
.news-more:hover { color: var(--color-bronze-dark); }

.latest-news { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.ln-card { display: flex; flex-direction: column; background: #fff; border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .25s ease, box-shadow .25s ease; }
.ln-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.ln-card-img { display: block; aspect-ratio: 16 / 10; overflow: hidden; background: var(--color-sand); }
.ln-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
.ln-card:hover .ln-card-img img { transform: scale(1.05); }
.ln-card-body { display: flex; flex-direction: column; padding: 18px 20px 22px; flex: 1; }
.ln-card-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.ln-tag { background: var(--color-bronze); color: #fff; font-size: 11px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; padding: 3px 10px; border-radius: 999px; white-space: nowrap; }
.ln-card-meta time { color: var(--color-text-light); font-size: 12.5px; }
.ln-card-title { font-family: var(--font-serif); font-size: 19px; line-height: 1.35; color: var(--color-walnut); margin: 0 0 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; transition: color .2s; }
.ln-card-title:hover { color: var(--color-bronze); }
.ln-card-summary { color: var(--color-text-light); font-size: 14px; line-height: 1.6; margin: 0 0 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.ln-card-more { margin-top: auto; font-weight: 600; color: var(--color-bronze); font-size: 13.5px; }
.ln-card-more:hover { text-decoration: underline; }

.news-detail { max-width: 860px; margin: 0 auto; }
.news-detail-cover { width: 100%; border-radius: 14px; margin-bottom: 28px; display: block; }
.news-detail-body { line-height: 1.85; color: var(--color-text); font-size: 16px; }
.news-detail-body h2, .news-detail-body h3 { font-family: var(--font-serif); color: var(--color-walnut); margin: 28px 0 12px; }
.news-detail-body p { margin: 0 0 16px; }
.news-detail-body img { max-width: 100%; height: auto; border-radius: 10px; margin: 8px 0; }
.news-detail-body ul, .news-detail-body ol { margin: 0 0 16px; padding-left: 22px; }
.news-detail-body li { margin-bottom: 6px; }
.news-detail-body a { color: var(--color-bronze); }
.news-detail-body blockquote { border-left: 3px solid var(--color-bronze-light); background: var(--color-sand); padding: 12px 18px; margin: 0 0 16px; color: var(--color-text-light); }
.news-back { display: flex; gap: 14px; margin-top: 38px; }

@media (max-width: 860px) {
  .news-list, .latest-news { grid-template-columns: 1fr; }
}