/* ============================================================================
 * THEME: SLATE — đơn sắc (than / trắng / xanh thép). Kiểu Swiss tối giản: chữ TO,
 * kẻ chỉ mảnh, KHÔNG bo góc, KHÔNG đổ bóng màu. Hero: chữ to căn trái -> BẢNG
 * thông số business -> ẢNH DẢI NGANG rộng ở CUỐI hero (ảnh không đứng cạnh chữ).
 * Thứ tự: Hero → About → Services → Stats → Reviews → Contact.
 * Dùng chung script.js + assets/ (giữ nguyên hook data-*).
 * ========================================================================== */

:root {
  --red:        #3f6ea8;          /* script.js ghi đè khi brand.primary có */
  --red-dark:   #2c527e;
  --hot-grad:   none;

  --ink:        #15181c;
  --ink-2:      #333941;
  --muted:      #6f7681;
  --line:       #dcdfe4;
  --line-2:     #eef0f2;
  --paper:      #ffffff;
  --paper-2:    #f4f5f7;
  --black:      #0d0f12;

  --radius:     0px;              /* VUÔNG TUYỆT ĐỐI */
  --radius-lg:  0px;
  --radius-pill:0px;
  --shadow:     none;
  --shadow-sm:  none;
  --maxw:       1240px;
  --gap:        clamp(28px, 4vw, 60px);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.container { width: min(var(--maxw), 92%); margin-inline: auto; }

h1, h2, h3, .logo, .stat-value { font-family: "Space Grotesk", "Inter", sans-serif; }

.label {
  display: inline-block; color: var(--muted);
  font-weight: 600; letter-spacing: .24em; text-transform: uppercase;
  font-size: .68rem; margin-bottom: 14px;
}
.section-title { font-size: clamp(1.8rem, 3.5vw, 2.7rem); font-weight: 600; line-height: 1.14; letter-spacing: -.03em; }
.lead { color: var(--muted); font-size: 1.02rem; margin-top: 14px; max-width: 58ch; }
.section-head { max-width: 660px; margin-bottom: 44px; }

/* nút — chữ nhật, viền mảnh */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 15px 30px; border-radius: 0;
  font-weight: 600; font-size: .88rem; letter-spacing: .02em;
  cursor: pointer; border: 1px solid transparent;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.btn-sm { padding: 10px 20px; font-size: .82rem; }
.btn-block { width: 100%; }
.btn-solid { background: var(--ink); color: #fff; }
.btn-solid:hover { background: var(--red); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink); }

/* ============================ HEADER ============================ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--ink);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; }
.logo { font-weight: 600; font-size: 1.28rem; letter-spacing: -.03em; color: var(--ink); }
.logo.light { color: #fff; }
.main-nav { display: flex; gap: 30px; }
.main-nav a { font-weight: 500; font-size: .88rem; color: var(--ink-2); }
.main-nav a:hover, .main-nav a.active { color: var(--red); text-decoration: underline; text-underline-offset: 5px; }
.header-right { display: flex; align-items: center; gap: 14px; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 26px; height: 2px; background: var(--ink); transition: .3s; }
.nav-toggle.open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity: 0; }
.nav-toggle.open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* ============================ HERO ============================ */
.hero { padding: clamp(52px, 6vw, 90px) 0 clamp(46px, 5vw, 76px); }
.eyebrow {
  display: inline-block; color: var(--red);
  font-weight: 600; font-size: .7rem;
  letter-spacing: .24em; text-transform: uppercase;
  margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  font-weight: 600; line-height: 1.02; letter-spacing: -.045em;
  max-width: 18ch;
}
/* chữ mô tả + nút nằm THÀNH 2 CỘT dưới tiêu đề (kiểu tạp chí) */
.hero-meta {
  display: grid; grid-template-columns: 1.3fr auto;
  align-items: end; gap: 26px var(--gap);
  margin-top: 32px; padding-top: 26px;
  border-top: 1px solid var(--line);
}
.hero-sub { color: var(--muted); font-size: 1.05rem; max-width: 52ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* BUSINESS — BẢNG THÔNG SỐ: nhãn cột trái, giá trị cột phải, kẻ chỉ ngang */
.biz-card {
  margin-top: clamp(38px, 4.5vw, 58px);
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.biz-card p {
  display: grid; grid-template-columns: 220px 1fr;
  align-items: baseline; gap: 20px;
  padding: 15px 0; margin: 0;
  border-bottom: 1px solid var(--line-2);
  font-size: 1.16rem; font-weight: 600; min-width: 0;
}
.biz-card p:last-child { border-bottom: none; }
.biz-card strong,
.footer-info strong {
  display: block;                 /* (footer dùng kiểu xếp dọc) */
  font-size: .7rem; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--muted);
}
.biz-card strong { margin: 0; }   /* trong bảng thì nhãn là CỘT, không cần margin dưới */
.biz-val { display: block; min-width: 0; }
/* TÊN CÔNG TY: cấm xuống dòng (kể cả đuôi ", LLC") — script.js co font nếu vẫn tràn */
.biz-val[data-biz-name],
.copyright [data-biz-name] { white-space: nowrap; }
.biz-val[data-biz-name] { overflow: hidden; font-family: "Space Grotesk", sans-serif; letter-spacing: -.02em; }
.biz-card a { color: var(--ink); }
.biz-card a:hover { color: var(--red); }

/* ẢNH DẢI NGANG rộng cuối hero */
.hero-visual { position: relative; margin-top: clamp(40px, 4.5vw, 60px); }
.frame { position: relative; overflow: hidden; aspect-ratio: 16 / 6; border: 1px solid var(--ink); }
.frame img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(.35) contrast(1.05); }
.rating-badge {
  position: absolute; left: 0; bottom: 0; z-index: 3;
  display: flex; align-items: center; gap: 12px;
  background: var(--ink); color: #fff;
  padding: 14px 22px;
}
.rb-star { width: 22px; height: 22px; color: #fff; display: inline-flex; }
.rb-star svg { width: 100%; height: 100%; }
.rating-badge strong { display: block; font-family: "Space Grotesk", sans-serif; font-size: 1.1rem; font-weight: 600; line-height: 1.1; }
.rating-badge small { color: #a9b0ba; font-size: .74rem; }

/* ============================ ABOUT ============================ */
.about { padding: clamp(60px, 7vw, 100px) 0; border-top: 1px solid var(--line); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap); align-items: center; }
.about-visual .frame { aspect-ratio: 4 / 3.4; }
.feature-list { display: grid; gap: 0; margin: 24px 0 30px; }
.feature-list li {
  display: grid; grid-template-columns: 32px 1fr; align-items: baseline;
  padding: 12px 0; border-bottom: 1px solid var(--line-2);
  font-weight: 500; font-size: .96rem;
}
.feature-list li::before {
  content: "→"; color: var(--red); font-weight: 600;
}

/* ============================ SERVICES (3 cột, chỉ kẻ chỉ) ============ */
.services { padding: clamp(60px, 7vw, 100px) 0; border-top: 1px solid var(--line); }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.service-card {
  padding: 34px 30px 34px 0;
  border-top: 2px solid var(--ink);
  transition: background .25s ease;
}
.service-card + .service-card { padding-left: 30px; border-left: 1px solid var(--line); }
.service-card:hover { background: var(--paper-2); }
.service-icon {
  width: 44px; height: 44px; display: inline-flex; align-items: center; justify-content: center;
  color: var(--red); margin-bottom: 22px;
}
.service-icon svg { width: 28px; height: 28px; }
.service-card h3 { font-size: 1.18rem; font-weight: 600; margin-bottom: 10px; letter-spacing: -.02em; }
.service-text { color: var(--muted); font-size: .95rem; }

/* ============================ STATS ============================ */
.stats { background: var(--ink); color: #fff; }
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); padding: 40px 0; }
.stat { display: flex; align-items: center; gap: 14px; padding: 8px 20px; }
.stat + .stat { border-left: 1px solid rgba(255,255,255,.16); }
.stat-icon { width: 34px; height: 34px; display: inline-flex; align-items: center; justify-content: center; color: #8fb4dd; }
.stat-icon svg { width: 24px; height: 24px; }
.stat-value { display: block; font-size: 1.5rem; font-weight: 600; line-height: 1.1; letter-spacing: -.03em; }
.stat-label { display: block; color: #9aa2ad; font-size: .78rem; }

/* ============================ TESTIMONIAL ============================ */
.testimonial { padding: clamp(60px, 7vw, 100px) 0; }
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.tcard { padding: 30px 28px 30px 0; border-top: 2px solid var(--ink); }
.tcard + .tcard { padding-left: 28px; border-left: 1px solid var(--line); }
.tstars { color: var(--red); letter-spacing: 3px; margin-bottom: 14px; font-size: .82rem; }
.tquote { font-size: 1.02rem; color: var(--ink-2); margin-bottom: 22px; }
.tperson { display: flex; align-items: center; gap: 12px; }
.tavatar {
  width: 40px; height: 40px; flex: 0 0 40px; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  background: var(--ink); color: #fff; font-weight: 600; font-size: .8rem;
}
.tavatar img { width: 100%; height: 100%; object-fit: cover; }
.tname { font-weight: 600; font-size: .92rem; }
.trole { color: var(--muted); font-size: .8rem; }

/* ============================ CONTACT ============================ */
.contact { padding: clamp(60px, 7vw, 100px) 0; border-top: 1px solid var(--line); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap); align-items: start; }
.contact-details { margin: 24px 0 28px; display: grid; gap: 0; }
.contact-details li {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 0; border-bottom: 1px solid var(--line-2);
}
.ci-chip { width: 32px; height: 32px; flex: 0 0 32px; display: inline-flex; align-items: center; justify-content: center; color: var(--red); }
.ci-chip svg { width: 20px; height: 20px; }
.ci-label { display: block; color: var(--muted); font-size: .68rem; text-transform: uppercase; letter-spacing: .16em; }
.contact-details a { font-weight: 600; }
.contact-details a:hover { color: var(--red); }
.contact-photo { overflow: hidden; border: 1px solid var(--ink); }
.contact-photo img { width: 100%; aspect-ratio: 16 / 7; object-fit: cover; filter: grayscale(.35); }

.contact-card { background: var(--paper-2); border: 1px solid var(--ink); padding: 34px 30px; position: sticky; top: 96px; }
.contact-card h3 { font-size: 1.3rem; font-weight: 600; margin-bottom: 22px; letter-spacing: -.02em; }
.contact-form label { display: block; font-size: .7rem; font-weight: 600; color: var(--muted);
                      text-transform: uppercase; letter-spacing: .14em; margin-bottom: 18px; }
.contact-form input {
  width: 100%; margin-top: 8px; padding: 13px 14px;
  background: #fff; border: 1px solid var(--line); border-radius: 0;
  font: inherit; font-size: .95rem; font-weight: 500; color: var(--ink);
  text-transform: none; letter-spacing: 0;
}
.contact-form input::placeholder { color: #a8aeb6; }
.contact-form input:focus { outline: none; border-color: var(--ink); }
.form-msg { margin-top: 12px; font-size: .86rem; color: var(--red); min-height: 1.2em;
            text-transform: none; letter-spacing: 0; }

/* ============================ FOOTER ============================ */
.site-footer { background: var(--black); color: #fff; padding: clamp(48px, 6vw, 76px) 0 24px; }
.footer-top {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px;
  padding-bottom: 30px; margin-bottom: 34px; border-bottom: 1px solid rgba(255,255,255,.18);
}
.footer-brand .logo { font-size: 1.4rem; }
.footer-brand p { color: #9aa2ad; margin-top: 6px; }
.footer-nav { display: flex; gap: 26px; flex-wrap: wrap; }
.footer-nav a { color: #c6cbd2; font-weight: 500; font-size: .88rem; }
.footer-nav a:hover { color: #fff; }

.footer-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: var(--gap); }
.footer-info p { font-size: 1.08rem; font-weight: 600; margin-bottom: 14px; color: #e7eaee; }
.footer-info strong { color: #9aa2ad; margin-bottom: 2px; }
.footer-info a { color: #e7eaee; }
.footer-info a:hover { color: #fff; }
.footer-map h3 { font-size: 1.16rem; font-weight: 600; margin-bottom: 14px; }
.map-embed { overflow: hidden; border: 1px solid rgba(255,255,255,.24); }
.map-embed iframe { width: 100%; height: 220px; border: 0; display: block; filter: grayscale(1); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.18); margin-top: 42px; padding-top: 20px;
  text-align: center; color: #9aa2ad; font-size: .88rem;
}
.footer-bottom .copyright { margin-top: 4px; }

/* ============================ REVEAL ============================ */
[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
[data-reveal].in { opacity: 1; transform: none; }

/* ============================ RESPONSIVE ============================ */
@media (max-width: 960px) {
  .hero-meta { grid-template-columns: 1fr; align-items: start; }
  .about-grid, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  .about-grid .about-visual { order: -1; }
  .contact-card { position: static; }
  .biz-card p { grid-template-columns: 1fr; gap: 2px; }
  .services-grid, .testimonial-grid { grid-template-columns: 1fr; }
  .service-card, .tcard { padding: 26px 0; }
  .service-card + .service-card,
  .tcard + .tcard { padding-left: 0; border-left: none; }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 22px 0; }
  .stat:nth-child(3) { border-left: none; }
  .frame { aspect-ratio: 16 / 9; }

  .header-cta { display: none; }
  .nav-toggle { display: flex; }
  .main-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: #fff; border-bottom: 1px solid var(--ink);
    max-height: 0; overflow: hidden; transition: max-height .35s ease;
  }
  .main-nav.open { max-height: 360px; }
  .main-nav a { padding: 15px 24px; border-top: 1px solid var(--line); }
}

@media (max-width: 560px) {
  .footer-top { flex-direction: column; align-items: flex-start; }
  .stat + .stat { border-left: none; }
  .rating-badge { position: static; }
}