/*
Theme Name: Callong
Theme URI: http://47.88.33.37
Author: Callong
Description: Custom OEM/ODM factory theme for feature phone & smartphone manufacturer. Bilingual EN/ZH single-page landing.
Version: 1.0
License: GNU General Public License v2 or later
Text Domain: globalphone
*/

* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --blue: #0a5bd3;
  --blue-dark: #063e91;
  --ink: #1a2130;
  --gray: #5b6577;
  --light: #f4f7fb;
  --line: #e3e8f0;
}
body {
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.btn {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  padding: 14px 32px;
  border-radius: 6px;
  font-weight: 600;
  letter-spacing: .3px;
  transition: background .2s, transform .2s;
}
.btn:hover { background: var(--blue-dark); transform: translateY(-2px); }
.btn-ghost {
  background: transparent;
  border: 2px solid #fff;
  padding: 12px 30px;
}
.btn-ghost:hover { background: #fff; color: var(--blue); }
section { padding: 80px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 54px; }
.section-head .tag {
  color: var(--blue);
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-size: 14px;
}
.section-head h2 { font-size: 36px; margin: 10px 0 14px; }
.section-head p { color: var(--gray); font-size: 17px; }

/* ---------- HEADER ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: #fff;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 2px 12px rgba(10,40,90,.05);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 800; color: var(--ink); }
.logo span { color: var(--blue); }
.logo .mark {
  width: 38px; height: 38px; border-radius: 8px;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  display: grid; place-items: center; color: #fff; font-size: 20px;
}
.nav nav ul { display: flex; gap: 32px; list-style: none; font-weight: 500; }
.nav nav ul a:hover { color: var(--blue); }
.nav .btn { padding: 10px 24px; }
.lang-btn {
  background: #fff; border: 1px solid var(--line); color: var(--ink);
  padding: 8px 16px; border-radius: 6px; font-weight: 600; cursor: pointer;
  font-family: inherit; font-size: 15px; margin-right: 16px; transition: border-color .2s, color .2s;
}
.lang-btn:hover { border-color: var(--blue); color: var(--blue); }
.nav-right { display: flex; align-items: center; }
.menu-toggle { display: none; font-size: 26px; background: none; border: none; cursor: pointer; }

/* ---------- HERO ---------- */
.hero {
  position: relative;
  background:
    linear-gradient(rgba(6,20,45,.78), rgba(6,20,45,.78)),
    var(--hero-img) center/cover no-repeat;
  color: #fff;
  padding: 130px 0;
  text-align: center;
}
.hero .tagline {
  display: inline-block;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  padding: 7px 18px; border-radius: 40px;
  font-size: 14px; letter-spacing: 1px; margin-bottom: 22px;
}
.hero h1 { font-size: 52px; line-height: 1.2; max-width: 900px; margin: 0 auto 20px; }
.hero h1 em { color: #6fb0ff; font-style: normal; }
.hero p { font-size: 19px; max-width: 640px; margin: 0 auto 34px; color: #d6e0f0; }
.hero .actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------- STATS ---------- */
.stats { background: var(--blue-dark); color: #fff; padding: 46px 0; }
.stats .grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stats .num { font-size: 42px; font-weight: 800; }
.stats .lbl { color: #b9d0f5; letter-spacing: .5px; font-size: 15px; }

/* ---------- PRODUCTS ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.prod-card {
  border: 1px solid var(--line); border-radius: 14px; overflow: hidden;
  transition: box-shadow .25s, transform .25s; background: #fff;
}
.prod-card:hover { box-shadow: 0 18px 40px rgba(10,40,90,.12); transform: translateY(-4px); }
.prod-card .thumb { height: 300px; background: var(--light) center/cover no-repeat; position: relative; }
.prod-card .thumb::after {
  content: attr(data-cat);
  position: absolute; top: 18px; left: 18px;
  background: var(--blue); color: #fff; font-size: 13px; font-weight: 600;
  padding: 6px 14px; border-radius: 30px;
}
.prod-card .body { padding: 26px 28px; }
.prod-card h3 { font-size: 23px; margin-bottom: 8px; }
.prod-card p { color: var(--gray); margin-bottom: 16px; }
.prod-card .link { color: var(--blue); font-weight: 600; }
.prod-card .link:hover { text-decoration: underline; }

/* ---------- WHY US ---------- */
.why { background: var(--light); }
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.why-card { background: #fff; border-radius: 14px; padding: 34px 26px; text-align: center; border: 1px solid var(--line); }
.why-card .ico {
  width: 66px; height: 66px; margin: 0 auto 18px; border-radius: 16px;
  background: linear-gradient(135deg, #e7f0ff, #d3e3ff);
  display: grid; place-items: center; font-size: 30px;
}
.why-card h3 { font-size: 19px; margin-bottom: 10px; }
.why-card p { color: var(--gray); font-size: 15px; }

/* ---------- CERTS ---------- */
.certs { text-align: center; }
.cert-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 22px; margin-top: 10px; }
.cert-badge {
  border: 1px solid var(--line); border-radius: 12px;
  padding: 22px 34px; min-width: 140px; background: #fff;
  font-weight: 800; font-size: 22px; color: var(--blue-dark); letter-spacing: 1px;
}
.cert-badge small { display: block; font-weight: 500; font-size: 12px; color: var(--gray); letter-spacing: .3px; margin-top: 4px; }

/* ---------- PROCESS ---------- */
.process { background: var(--ink); color: #fff; }
.process .section-head h2 { color: #fff; }
.process .section-head p { color: #aeb8c9; }
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.step { text-align: center; position: relative; }
.step .n {
  width: 58px; height: 58px; margin: 0 auto 14px; border-radius: 50%;
  background: var(--blue); display: grid; place-items: center; font-size: 22px; font-weight: 800;
}
.step h4 { font-size: 16px; margin-bottom: 4px; }
.step p { color: #aeb8c9; font-size: 13px; }

/* ---------- ABOUT ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: center; }
.about-img { border-radius: 16px; height: 420px; background: var(--light) center/cover no-repeat; box-shadow: 0 20px 50px rgba(10,40,90,.15); }
.about-txt h2 { font-size: 34px; margin-bottom: 18px; }
.about-txt p { color: var(--gray); margin-bottom: 16px; font-size: 16px; }
.about-txt ul { list-style: none; margin: 20px 0 28px; }
.about-txt li { padding: 8px 0 8px 30px; position: relative; }
.about-txt li::before { content: "\2714"; position: absolute; left: 0; color: var(--blue); font-weight: 800; }

/* ---------- CONTACT ---------- */
.contact { background: var(--light); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; }
.contact-info h3 { font-size: 26px; margin-bottom: 20px; }
.info-item { display: flex; gap: 14px; margin-bottom: 22px; }
.info-item .ico { font-size: 22px; color: var(--blue); }
.info-item strong { display: block; }
.info-item span { color: var(--gray); }
.contact form { background: #fff; padding: 34px; border-radius: 16px; border: 1px solid var(--line); }
.contact form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact form label { display: block; font-weight: 600; font-size: 14px; margin: 14px 0 6px; }
.contact form input, .contact form textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line);
  border-radius: 8px; font-size: 15px; font-family: inherit;
}
.contact form input:focus, .contact form textarea:focus { outline: none; border-color: var(--blue); }
.contact form button { margin-top: 22px; width: 100%; border: none; cursor: pointer; font-size: 16px; }

/* ---------- FOOTER ---------- */
.site-footer { background: #0a1020; color: #9aa6bb; padding: 60px 0 26px; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 40px; margin-bottom: 40px; }
.site-footer h4 { color: #fff; margin-bottom: 16px; font-size: 17px; }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 9px; }
.site-footer a:hover { color: #fff; }
.foot-logo { display: flex; align-items: center; gap: 10px; font-size: 21px; font-weight: 800; color: #fff; margin-bottom: 16px; }
.foot-logo span { color: #6fb0ff; }
.foot-bottom { border-top: 1px solid #1e2740; padding-top: 24px; text-align: center; font-size: 14px; }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
  .nav nav ul { display: none; }
  .menu-toggle { display: block; }
  .hero h1 { font-size: 36px; }
  .stats .grid, .why-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid, .about-grid, .contact-grid, .foot-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .about-img { height: 300px; }
}