/* ==========================================================
   Trang Lĩnh vực — phong cách "kính mờ xanh nhạt" (bản trình bày
   kế hoạch kinh doanh): nền xanh băng, sóng trắng, khung kính bo tròn,
   thanh viên thuốc, mục lục PART 01–05 — 09/11/2026
   ========================================================== */
.lv { --lv-ink: #24476b; --lv-ink2: #3d5f82; --lv-mut: #6d86a0; --lv-acc: #3b6d9c; --lv-deep: #2c5279;
  --lv-glass: rgba(255, 255, 255, .55); --lv-bd: rgba(255, 255, 255, .85); --lv-sh: 0 10px 30px rgba(52, 92, 135, .14);
  font-family: "Be Vietnam Pro", system-ui, sans-serif; color: var(--lv-ink2);
  background: linear-gradient(180deg, #e3edf7 0%, #d6e4f2 40%, #e6eef7 100%); padding: 26px 0 70px; }
.lv h1, .lv h2, .lv h3 { font-family: "Be Vietnam Pro", system-ui, sans-serif; color: var(--lv-ink); }
.lv .lw { max-width: 1240px; margin: 0 auto; padding: 0 20px; }
.lv-panel { position: relative; overflow: hidden; border-radius: 18px; border: 1px solid var(--lv-bd);
  background: linear-gradient(160deg, rgba(255, 255, 255, .78), rgba(225, 236, 247, .62));
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); box-shadow: var(--lv-sh); }
.lv-bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 18px 30px 0; font-size: 13px; color: var(--lv-mut); position: relative; z-index: 1; }
.lv-bar b { color: var(--lv-ink); font-weight: 700; letter-spacing: .04em; }
.lv-bar .r { color: var(--lv-acc); }

/* 1. Bìa */
.lv-cover { min-height: 520px; display: flex; flex-direction: column;
  background: url("../assets/img/song-lv.svg?v=1") center bottom / 100% 70% no-repeat, linear-gradient(170deg, #f4f8fc 0%, #dce8f4 45%, #c9dbee 100%); }
.lv-cover .in { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 30px 24px 34px; position: relative; z-index: 1; }
.lv-cover .crumb { font-size: 13px; color: var(--lv-mut); margin-bottom: 14px; letter-spacing: .04em; }
.lv-cover .crumb a:hover { color: var(--lv-acc); }
.lv-cover h1 { font-weight: 500; font-size: clamp(40px, 6.4vw, 92px); line-height: 1.04; letter-spacing: -.01em; color: #2a5279; text-shadow: 0 2px 0 rgba(255, 255, 255, .7); margin: 0; }
.lv-cover h1 small { display: block; font-size: .78em; font-weight: 400; }
.lv-cover p { max-width: 720px; margin: 18px auto 0; font-size: 16px; color: var(--lv-ink2); }
.lv-pill { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 6px 0; margin: 34px auto 0; padding: 12px 28px; border-radius: 99px;
  background: rgba(255, 255, 255, .62); border: 1px solid #fff; box-shadow: 0 6px 18px rgba(52, 92, 135, .14); font-size: 14px; color: var(--lv-mut); }
.lv-pill span { padding: 0 16px; border-right: 1px solid #b9cbdd; }
.lv-pill span:last-child { border: 0; }
.lv-pill b { color: var(--lv-ink); font-weight: 600; margin-left: 4px; }

/* 2. Mục lục */
.lv-toc { margin-top: 22px; padding: 26px 30px 30px; }
.lv-toc h2 { text-align: center; font-weight: 500; font-size: 30px; margin: 0; }
.lv-toc h2 + small { display: block; text-align: center; font-size: 13px; color: var(--lv-mut); margin: 2px 0 20px; }
.lv-toc .g { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.lv-toc a { display: flex; flex-direction: column; gap: 6px; padding: 14px 16px 16px; border-radius: 12px; background: var(--lv-glass); border: 1px solid var(--lv-bd);
  box-shadow: 0 4px 14px rgba(52, 92, 135, .08); transition: transform .2s, box-shadow .2s, background .2s; }
.lv-toc a:hover { transform: translateY(-3px); background: rgba(255, 255, 255, .85); box-shadow: var(--lv-sh); }
.lv-toc a small { font-size: 11px; letter-spacing: .14em; color: var(--lv-mut); }
.lv-toc a b { font-size: 15px; line-height: 1.35; color: var(--lv-ink); font-weight: 600; }
.lv-toc a span { font-size: 12.5px; color: var(--lv-mut); line-height: 1.45; }

/* 3. Từng lĩnh vực: cột trái + nội dung */
.lv-part { margin-top: 22px; display: grid; grid-template-columns: 300px 1fr; scroll-margin-top: 100px; }
.lv-side { padding: 28px 26px; background: linear-gradient(180deg, rgba(255, 255, 255, .7), rgba(232, 240, 248, .5)); border-right: 1px solid rgba(255, 255, 255, .9); position: relative; }
.lv-side .pt { font-size: 12px; letter-spacing: .16em; color: var(--lv-mut); }
.lv-side .no { font-size: 54px; font-weight: 300; line-height: 1; color: #9db6cf; margin: 6px 0 10px; }
.lv-side h2 { font-size: 22px; font-weight: 600; line-height: 1.3; margin: 0 0 8px; }
.lv-side .sub { font-size: 13.5px; color: var(--lv-acc); font-weight: 500; margin: 0 0 14px; }
.lv-side p { font-size: 14px; line-height: 1.7; color: var(--lv-ink2); margin: 0; }
.lv-side .go { display: inline-flex; align-items: center; gap: 8px; margin-top: 20px; padding: 10px 20px; border-radius: 99px; background: var(--lv-deep); color: #fff; font-size: 14px; font-weight: 600; box-shadow: 0 6px 16px rgba(44, 82, 121, .28); transition: background .2s; }
.lv-side .go:hover { background: #1f3f60; }
.lv-side .go svg { width: 16px; height: 16px; }
.lv-main { padding: 24px; display: grid; grid-template-columns: 1.15fr 1fr; gap: 16px; align-content: start; }
.lv-card { background: var(--lv-glass); border: 1px solid var(--lv-bd); border-radius: 12px; padding: 16px 18px; box-shadow: 0 4px 14px rgba(52, 92, 135, .07); }
.lv-card h3 { font-size: 13px; letter-spacing: .1em; text-transform: uppercase; color: var(--lv-acc); font-weight: 600; margin: 0 0 10px; display: flex; align-items: center; gap: 8px; }
.lv-card h3::before { content: ""; width: 4px; height: 14px; border-radius: 2px; background: var(--lv-acc); }
.lv-items { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.lv-items li { display: grid; grid-template-columns: 34px 1fr; gap: 10px; align-items: center; padding: 9px 12px; border-radius: 10px; background: rgba(255, 255, 255, .75); border: 1px solid #e3ecf5; font-size: 14px; color: var(--lv-ink); }
.lv-items li i { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; background: var(--lv-deep); color: #fff; font: 600 13px "Be Vietnam Pro", sans-serif; font-style: normal; }
.lv-items li:nth-child(even) i { background: #8fb0d0; }
.lv-photo { position: relative; border-radius: 12px; overflow: hidden; border: 1px solid var(--lv-bd); box-shadow: 0 4px 14px rgba(52, 92, 135, .1); min-height: 240px; background: #dfe9f3; }
.lv-photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.lv-photo span { position: absolute; left: 12px; bottom: 12px; padding: 5px 14px; border-radius: 99px; background: rgba(255, 255, 255, .8); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); font-size: 12.5px; font-weight: 600; color: var(--lv-ink); }
.lv-gal { grid-column: 1 / -1; }
.lv-gal .g { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.lv-gal figure { margin: 0; cursor: zoom-in; border-radius: 10px; overflow: hidden; background: #fff; border: 1px solid #e3ecf5; }
.lv-gal img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .35s; }
.lv-gal figure:hover img { transform: scale(1.05); }
.lv-gal figcaption { font-size: 12px; color: var(--lv-mut); padding: 6px 9px 8px; line-height: 1.4; }

/* 4. Kết */
.lv-end { margin-top: 22px; padding: 34px 30px; text-align: center;
  background: url("../assets/img/song-lv.svg?v=1") center 120% / 100% 90% no-repeat, linear-gradient(170deg, #f4f8fc, #d3e2f1); }
.lv-end h2 { font-weight: 500; font-size: clamp(24px, 3vw, 34px); margin: 0 0 8px; position: relative; }
.lv-end p { color: var(--lv-ink2); margin: 0 0 20px; position: relative; }
.lv-end .bt { display: inline-flex; gap: 10px; flex-wrap: wrap; justify-content: center; position: relative; }
.lv-end a { padding: 12px 26px; border-radius: 99px; font-weight: 600; font-size: 15px; }
.lv-end a.a1 { background: var(--lv-deep); color: #fff; box-shadow: 0 6px 16px rgba(44, 82, 121, .28); }
.lv-end a.a1:hover { background: #1f3f60; }
.lv-end a.a2 { background: rgba(255, 255, 255, .75); border: 1px solid #fff; color: var(--lv-ink); }

@media (max-width: 1000px) {
  .lv-toc .g { grid-template-columns: repeat(3, 1fr); }
  .lv-part { grid-template-columns: 1fr; }
  .lv-side { border-right: 0; border-bottom: 1px solid rgba(255, 255, 255, .9); }
}
@media (max-width: 700px) {
  .lv { padding-top: 14px; }
  .lv .lw { padding: 0 12px; }
  .lv-bar { padding: 14px 18px 0; font-size: 12px; }
  .lv-cover { min-height: 460px; }
  .lv-pill { border-radius: 18px; padding: 10px 12px; flex-direction: column; gap: 4px; }
  .lv-pill span { border: 0; padding: 0; }
  .lv-toc { padding: 22px 14px; }
  .lv-toc .g { grid-template-columns: 1fr 1fr; }
  .lv-main { grid-template-columns: 1fr; padding: 14px; }
  .lv-side { padding: 22px 18px; }
  .lv-photo { min-height: 200px; }
}