/*
Theme Name: Lan Anh Daily
Theme URI: https://lananhdaily.com/
Author: Lan Anh Daily
Description: Giao diện riêng cho lananhdaily.com — kiến trúc tham chiếu nghecontent.com, hệ màu đỏ BNI (#CF2030) trên nền trắng, chữ đen. Gọn, hiện đại, tối ưu đọc và chuyển đổi.
Version: 1.0.9
Requires at least: 6.0
Tested up to: 6.8
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: lananhdaily
Tags: blog, one-column, custom-menu, featured-images, translation-ready
*/

/* ================================================================
   0. BẢNG MÀU & BIẾN
   Dương bản = nền trắng chữ đen · Âm bản = nền đen chữ trắng
   Nhấn = đỏ BNI #CF2030
   ================================================================ */
:root{
  --red:#CF2030;
  --red-600:#B81B29;
  --red-700:#93151F;
  --red-050:#FDF1F2;
  --red-100:#FADDE0;

  --ink:#16181D;
  --ink-800:#242830;
  --ink-600:#4B515C;
  --ink-400:#79808D;

  --white:#FFFFFF;
  --paper:#F7F8FA;
  --line:#E7E9EE;
  --line-dark:rgba(255,255,255,.14);

  --radius:16px;
  --radius-sm:10px;
  --radius-lg:24px;
  --shadow:0 1px 2px rgba(22,24,29,.04), 0 8px 24px rgba(22,24,29,.06);
  --shadow-lg:0 2px 4px rgba(22,24,29,.05), 0 18px 48px rgba(22,24,29,.10);

  --wrap:1200px;
  --wrap-narrow:760px;
  --header-h:72px;

  --font:'Manrope',-apple-system,BlinkMacSystemFont,'Segoe UI','Helvetica Neue',Arial,sans-serif;
}

/* ================================================================
   1. NỀN TẢNG
   ================================================================ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px)}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.7;
  color:var(--ink);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video{max-width:100%;height:auto;display:block}
a{color:var(--red);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--red-700)}
h1,h2,h3,h4,h5{margin:0 0 .5em;font-weight:800;line-height:1.2;letter-spacing:-.02em;color:var(--ink)}
h1{font-size:clamp(2rem,4.6vw,3.4rem)}
h2{font-size:clamp(1.6rem,3.2vw,2.4rem)}
h3{font-size:clamp(1.2rem,2vw,1.5rem)}
h4{font-size:1.1rem}
p{margin:0 0 1.15em}
ul,ol{padding-left:1.3em}
blockquote{
  margin:1.8em 0;padding:1.1em 1.4em;
  border-left:4px solid var(--red);
  background:var(--red-050);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  font-size:1.06em;
}
blockquote p:last-child{margin-bottom:0}
hr{border:0;border-top:1px solid var(--line);margin:2.5em 0}
code{background:var(--paper);padding:.15em .4em;border-radius:6px;font-size:.9em}
table{width:100%;border-collapse:collapse;margin:1.5em 0}
th,td{border:1px solid var(--line);padding:.7em .9em;text-align:left}
th{background:var(--paper);font-weight:700}
::selection{background:var(--red);color:#fff}

.skip-link{position:absolute;left:-9999px}
.skip-link:focus{left:12px;top:12px;z-index:999;background:var(--red);color:#fff;padding:.6em 1em;border-radius:8px}
:focus-visible{outline:3px solid var(--red);outline-offset:2px;border-radius:4px}
.screen-reader-text{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}

/* ================================================================
   2. BỐ CỤC CHUNG
   ================================================================ */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
.wrap--narrow{max-width:var(--wrap-narrow)}
.section{padding:clamp(56px,7vw,96px) 0}
.section--tight{padding:clamp(40px,5vw,64px) 0}
.section--paper{background:var(--paper)}
.section--ink{background:var(--ink);color:#fff}
.section--ink h1,.section--ink h2,.section--ink h3{color:#fff}
.section--ink p{color:rgba(255,255,255,.78)}

/* Đầu mục section */
.sec-head{max-width:720px;margin-bottom:clamp(28px,4vw,44px)}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head p{color:var(--ink-600);font-size:1.05rem;margin-bottom:0}
.section--ink .sec-head p{color:rgba(255,255,255,.72)}

/* Nhãn nhỏ trên tiêu đề (eyebrow) */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.75rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;
  color:var(--red);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--red);border-radius:2px}
.section--ink .eyebrow{color:#FF6B78}
.section--ink .eyebrow::before{background:#FF6B78}

.sec-head__row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;max-width:none}

/* ================================================================
   3. NÚT
   ================================================================ */
.lad-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:2px solid transparent;
  font-weight:700;font-size:.98rem;line-height:1;cursor:pointer;
  transition:transform .16s ease, background .18s ease, color .18s ease, border-color .18s ease, box-shadow .18s ease;
  text-align:center;
}
.lad-btn:hover{transform:translateY(-2px)}
.lad-btn--primary{background:var(--red);color:#fff;box-shadow:0 6px 18px rgba(207,32,48,.28)}
.lad-btn--primary:hover{background:var(--red-600);color:#fff;box-shadow:0 10px 26px rgba(207,32,48,.34)}
.lad-btn--ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.lad-btn--ghost:hover{color:var(--red);border-color:var(--red);background:var(--red-050)}
.lad-btn--white{background:#fff;color:var(--ink)}
.lad-btn--white:hover{color:var(--red);background:#fff}
.lad-btn--outline-white{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.lad-btn--outline-white:hover{color:#fff;border-color:#fff;background:rgba(255,255,255,.1)}
.lad-btn--sm{padding:10px 20px;font-size:.9rem}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}

/* Liên kết có mũi tên */
.arrow-link{display:inline-flex;align-items:center;gap:7px;font-weight:700;color:var(--red)}
.arrow-link::after{content:"→";transition:transform .18s ease}
.arrow-link:hover::after{transform:translateX(4px)}

/* ================================================================
   4. ĐẦU TRANG
   ================================================================ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.site-header__inner{display:flex;align-items:center;gap:24px;height:var(--header-h)}

/* Logo chữ */
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand__mark{
  width:36px;height:36px;border-radius:10px;background:var(--red);
  display:grid;place-items:center;color:#fff;font-weight:800;font-size:1rem;letter-spacing:-.04em;
  box-shadow:0 4px 12px rgba(207,32,48,.3);
}
.brand__text{display:flex;flex-direction:column;line-height:1.05}
.brand__name{font-weight:800;font-size:1.06rem;color:var(--ink);letter-spacing:-.02em}
.brand__sub{font-size:.64rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-400)}
.brand:hover .brand__name{color:var(--red)}
.brand img{max-height:44px;width:auto}

/* Điều hướng */
.nav{margin-left:auto}
.nav ul{list-style:none;display:flex;align-items:center;gap:4px;margin:0;padding:0}
.nav li{position:relative}
.nav a{
  display:block;padding:9px 14px;border-radius:9px;
  color:var(--ink-800);font-weight:600;font-size:.95rem;
  transition:color .16s ease,background .16s ease;
}
.nav a:hover{color:var(--red);background:var(--red-050)}
.nav .current-menu-item>a,.nav .current_page_item>a,
.nav .current-menu-parent>a,.nav .current-post-ancestor>a{color:var(--red)}

/* Menu con */
.nav ul ul{
  position:absolute;top:calc(100% + 8px);left:0;min-width:250px;
  flex-direction:column;align-items:stretch;gap:0;padding:8px;
  background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s;
}
.nav li:hover>ul,.nav li:focus-within>ul{opacity:1;visibility:visible;transform:translateY(0)}
.nav ul ul a{padding:10px 12px;font-size:.92rem;border-radius:8px}
.nav ul ul::before{content:"";position:absolute;top:-8px;left:0;right:0;height:8px}

.header-cta{flex-shrink:0}

/* Nút menu di động */
.nav-toggle{
  display:none;margin-left:auto;
  width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
  background:#fff;cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);margin:4px auto;border-radius:2px;transition:.2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ================================================================
   5. HERO
   ================================================================ */
.hero{position:relative;overflow:hidden;background:var(--white);padding:clamp(48px,6vw,84px) 0 clamp(40px,5vw,64px)}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(60% 70% at 88% 10%, rgba(207,32,48,.10), transparent 62%),
    radial-gradient(50% 60% at 0% 100%, rgba(207,32,48,.06), transparent 60%);
}
.hero__inner{position:relative;z-index:1;display:grid;grid-template-columns:1.08fr .92fr;gap:clamp(32px,5vw,64px);align-items:center}
.hero h1{margin-bottom:.42em}
.hero h1 em{font-style:normal;color:var(--red)}
.hero__lead{font-size:clamp(1.02rem,1.4vw,1.16rem);color:var(--ink-600);max-width:52ch;margin-bottom:1.6em}
.hero .btn-row{margin-bottom:26px}
.hero__note{font-size:.85rem;color:var(--ink-400);margin:0}

/* Ảnh hero */
.hero__media{position:relative}
.hero__frame{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-lg);aspect-ratio:4/5;background:var(--paper);
}
.hero__frame img{width:100%;height:100%;object-fit:cover}
.hero__frame::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(22,24,29,.42))}
.hero__badge{
  position:absolute;left:-14px;bottom:34px;z-index:2;
  background:#fff;border-radius:14px;padding:14px 18px;
  box-shadow:var(--shadow-lg);max-width:250px;
  border-left:4px solid var(--red);
}
.hero__badge strong{display:block;font-size:.94rem;line-height:1.3;color:var(--ink)}
.hero__badge span{font-size:.78rem;color:var(--ink-400);font-weight:600}

/* Chip nhỏ */
.chip{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--red-050);color:var(--red-700);
  border:1px solid var(--red-100);
  padding:6px 14px;border-radius:999px;
  font-size:.8rem;font-weight:700;margin-bottom:18px;
}
.chip__dot{width:7px;height:7px;border-radius:50%;background:var(--red)}

/* ================================================================
   6. DẢI SỐ LIỆU
   ================================================================ */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper)}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line)}
.stat{background:var(--paper);padding:26px 20px;text-align:center}
.stat__num{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;color:var(--red);letter-spacing:-.03em;line-height:1.1}
.stat__label{font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-400);margin-top:6px}
.stats__note{text-align:center;font-size:.82rem;color:var(--ink-400);padding:14px 20px 0;margin:0}

/* ================================================================
   7. THẺ (dùng chung)
   ================================================================ */
.grid{display:grid;gap:24px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}

.card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  height:100%;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--red-100)}
.card__media{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:var(--paper)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card__media img{transform:scale(1.04)}
.card__body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.card__title{font-size:1.07rem;font-weight:800;line-height:1.35;margin:0 0 10px;letter-spacing:-.01em}
.card__title a{color:var(--ink)}
.card__title a:hover{color:var(--red)}
.card__excerpt{font-size:.94rem;color:var(--ink-600);margin:0 0 16px;flex:1}
.card__meta{display:flex;align-items:center;gap:10px;font-size:.79rem;color:var(--ink-400);font-weight:600;margin-top:auto}
.card__meta .sep{width:3px;height:3px;border-radius:50%;background:var(--line)}

/* Nhãn chuyên mục trên ảnh */
.card__tag{
  position:absolute;left:12px;top:12px;z-index:2;
  background:rgba(255,255,255,.94);backdrop-filter:blur(6px);
  color:var(--red-700);font-size:.72rem;font-weight:800;
  padding:5px 11px;border-radius:999px;letter-spacing:.02em;
}

/* Ảnh giữ chỗ có thương hiệu (bài chưa có ảnh đại diện) */
.lad-card__ph{
  position:absolute;inset:0;display:grid;place-items:center;padding:24px;text-align:center;
  background:linear-gradient(135deg,var(--ink) 0%,#2A2E37 100%);
}
.lad-card__ph--1{background:linear-gradient(135deg,var(--red-700) 0%,var(--red) 100%)}
.lad-card__ph--2{background:linear-gradient(135deg,#2A2E37 0%,var(--red-700) 100%)}
.lad-card__ph span{
  color:rgba(255,255,255,.95);font-weight:800;font-size:.98rem;line-height:1.35;
  letter-spacing:-.01em;max-width:16ch;
}
.lad-card__ph::after{
  content:"";position:absolute;right:-30px;bottom:-30px;width:130px;height:130px;
  border:2px solid rgba(255,255,255,.13);border-radius:50%;
}

/* ================================================================
   8. THẺ CHỦ ĐỀ
   ================================================================ */
.topic{
  position:relative;display:flex;flex-direction:column;justify-content:flex-end;
  min-height:230px;padding:24px;border-radius:var(--radius);overflow:hidden;
  color:#fff;background:var(--ink);
  transition:transform .2s ease,box-shadow .2s ease;
}
.topic:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.topic img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.topic::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(22,24,29,.15) 0%,rgba(22,24,29,.88) 100%);
}
.topic--solid::after{background:linear-gradient(160deg,var(--red-700) 0%,var(--ink) 100%);opacity:.96}
.topic__body{position:relative;z-index:2}
.topic__name{font-size:1.15rem;font-weight:800;color:#fff;margin:0 0 6px;line-height:1.28}
.topic__count{font-size:.8rem;font-weight:700;color:rgba(255,255,255,.75)}
.topic:hover .topic__name{color:#fff}

/* ================================================================
   9. KHOÁ HỌC
   ================================================================ */
.course{position:relative}
.course__head{
  aspect-ratio:16/9;display:grid;place-items:center;padding:24px;text-align:center;
  background:linear-gradient(150deg,var(--ink) 0%,#31353F 100%);position:relative;overflow:hidden;
}
.course--a .course__head{background:linear-gradient(150deg,var(--red) 0%,var(--red-700) 100%)}
.course--c .course__head{background:linear-gradient(150deg,#31353F 0%,var(--red-700) 100%)}
.course__head::after{
  content:"";position:absolute;right:-40px;top:-40px;width:160px;height:160px;
  border:2px solid rgba(255,255,255,.14);border-radius:50%;
}
.course__head span{position:relative;color:#fff;font-weight:800;font-size:1.12rem;line-height:1.35;letter-spacing:-.01em}
.course__badge{
  position:absolute;left:14px;top:14px;z-index:2;
  background:rgba(255,255,255,.95);color:var(--ink);
  font-size:.7rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;
  padding:5px 11px;border-radius:999px;
}
.course__list{list-style:none;padding:0;margin:0 0 18px;font-size:.93rem;color:var(--ink-600)}
.course__list li{position:relative;padding-left:24px;margin-bottom:8px}
.course__list li::before{
  content:"";position:absolute;left:0;top:.52em;width:14px;height:8px;
  border-left:2px solid var(--red);border-bottom:2px solid var(--red);
  transform:rotate(-45deg);
}
.course__foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}
.course__price{font-weight:800;color:var(--ink);font-size:.98rem}
.course__price small{display:block;font-weight:600;font-size:.76rem;color:var(--ink-400)}

/* Ghi chú nội bộ "cần bổ sung" */
.todo-note{
  display:flex;gap:12px;align-items:flex-start;
  margin-top:28px;padding:16px 18px;border-radius:var(--radius-sm);
  background:var(--red-050);border:1px dashed var(--red-100);
  font-size:.9rem;color:var(--ink-600);
}
.todo-note strong{color:var(--red-700)}

/* ================================================================
   10. KHỐI CÂU CHUYỆN (âm bản)
   ================================================================ */
.story__inner{display:grid;grid-template-columns:.95fr 1.05fr;gap:clamp(32px,5vw,64px);align-items:center}
.story__media{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);aspect-ratio:4/3}
.story__media img{width:100%;height:100%;object-fit:cover}
.story__quote{
  border-left:3px solid var(--red);padding:2px 0 2px 20px;margin:0 0 24px;
  font-size:1.12rem;line-height:1.6;color:#fff;font-weight:600;
}
.story__sign{font-size:.9rem;color:rgba(255,255,255,.6);font-weight:700;letter-spacing:.04em}
.values{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 26px;padding:0;list-style:none}
.values li{
  padding:7px 15px;border-radius:999px;font-size:.85rem;font-weight:700;
  background:rgba(255,255,255,.08);border:1px solid var(--line-dark);color:#fff;
}

/* ================================================================
   11. DẢI ẢNH CỘNG ĐỒNG
   ================================================================ */
.proof{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:16px}
.proof figure{position:relative;margin:0;border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;background:var(--paper)}
.proof figure:first-child{aspect-ratio:16/11}
.proof img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.proof figure:hover img{transform:scale(1.04)}
.proof figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:26px 16px 12px;
  background:linear-gradient(180deg,transparent,rgba(22,24,29,.82));
  color:#fff;font-size:.82rem;font-weight:700;
}

/* ================================================================
   12. DẢI KÊU GỌI (nền đỏ)
   ================================================================ */
.cta-band{background:var(--red);color:#fff;position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:340px;height:340px;
  border:2px solid rgba(255,255,255,.16);border-radius:50%;
}
.cta-band::before{
  content:"";position:absolute;left:-60px;bottom:-120px;width:260px;height:260px;
  border:2px solid rgba(255,255,255,.12);border-radius:50%;
}
.cta-band__inner{position:relative;z-index:1;text-align:center;max-width:720px;margin:0 auto}
.cta-band h2{color:#fff;margin-bottom:.5em}
.cta-band p{color:rgba(255,255,255,.9);font-size:1.05rem;margin-bottom:1.7em}
.cta-band .btn-row{justify-content:center}
.cta-band__note{font-size:.83rem;color:rgba(255,255,255,.72);margin:20px 0 0}

/* ================================================================
   13. TRANG TRONG / BÀI VIẾT
   ================================================================ */
.page-hero{background:var(--paper);border-bottom:1px solid var(--line);padding:clamp(40px,5vw,64px) 0}
.page-hero__inner{max-width:820px}
.page-hero h1{margin-bottom:.3em}
.page-hero p{color:var(--ink-600);margin-bottom:0;font-size:1.05rem}

.breadcrumb{font-size:.84rem;color:var(--ink-400);margin-bottom:16px;font-weight:600}
.breadcrumb a{color:var(--ink-400)}
.breadcrumb a:hover{color:var(--red)}
.breadcrumb .sep{margin:0 8px;opacity:.5}

.entry{padding:clamp(40px,5vw,64px) 0}
.entry__header{max-width:var(--wrap-narrow);margin:0 auto clamp(28px,4vw,40px)}
.entry__meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:.86rem;color:var(--ink-400);font-weight:600;margin-top:16px}
.entry__cat{
  display:inline-block;background:var(--red-050);color:var(--red-700);
  border:1px solid var(--red-100);
  padding:5px 13px;border-radius:999px;font-size:.78rem;font-weight:800;margin-bottom:14px;
}
.entry__thumb{max-width:1000px;margin:0 auto clamp(28px,4vw,44px);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
.entry__content{max-width:var(--wrap-narrow);margin:0 auto;font-size:1.06rem;line-height:1.78}
.entry__content h2{margin-top:1.7em;font-size:clamp(1.4rem,2.4vw,1.85rem)}
.entry__content h3{margin-top:1.5em}
.entry__content h2::after{
  content:"";display:block;width:44px;height:3px;background:var(--red);
  border-radius:2px;margin-top:.42em;
}
.entry__content img{border-radius:var(--radius);margin:1.6em 0}
.entry__content ul li,.entry__content ol li{margin-bottom:.5em}
.entry__content a{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1.5px}
.entry__content .button,.entry__content a.button{
  display:inline-block;background:var(--red);color:#fff;text-decoration:none;
  padding:13px 28px;border-radius:999px;font-weight:700;
  box-shadow:0 6px 18px rgba(207,32,48,.28);
}
.entry__content .button:hover{background:var(--red-600);color:#fff}

.entry__footer{max-width:var(--wrap-narrow);margin:clamp(36px,5vw,52px) auto 0;padding-top:28px;border-top:1px solid var(--line)}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:0}
.tag-list a{
  display:inline-block;padding:6px 14px;border-radius:999px;
  background:var(--paper);border:1px solid var(--line);
  color:var(--ink-600);font-size:.83rem;font-weight:600;
}
.tag-list a:hover{background:var(--red-050);border-color:var(--red-100);color:var(--red-700)}

/* Hộp tác giả */
.author-box{
  display:flex;gap:20px;align-items:flex-start;
  margin-top:32px;padding:24px;border-radius:var(--radius);
  background:var(--paper);border:1px solid var(--line);
}
.author-box__img{width:76px;height:76px;border-radius:50%;overflow:hidden;flex-shrink:0;background:var(--red)}
.author-box__img img{width:100%;height:100%;object-fit:cover}
.author-box h4{margin:0 0 6px}
.author-box p{font-size:.94rem;color:var(--ink-600);margin:0 0 10px}

/* Bài liên quan */
.related{background:var(--paper);border-top:1px solid var(--line)}

/* Phân trang */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:clamp(36px,4vw,52px);flex-wrap:wrap}
.pagination .page-numbers{
  display:grid;place-items:center;min-width:42px;height:42px;padding:0 12px;
  border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--ink-600);font-weight:700;font-size:.92rem;
}
.pagination .page-numbers:hover{border-color:var(--red);color:var(--red)}
.pagination .current{background:var(--red);border-color:var(--red);color:#fff}

/* Lọc chuyên mục dạng tab */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:clamp(28px,3.5vw,40px)}
.filters a{
  padding:9px 18px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--ink-600);font-size:.9rem;font-weight:700;
}
.filters a:hover{border-color:var(--red);color:var(--red);background:var(--red-050)}
.filters a.is-active{background:var(--ink);border-color:var(--ink);color:#fff}

/* Ô tìm kiếm */
.search-form{display:flex;gap:8px;max-width:460px}
.search-form input[type="search"]{
  flex:1;padding:12px 16px;border:1px solid var(--line);border-radius:999px;
  font-family:var(--font);font-size:.95rem;background:#fff;color:var(--ink);
}
.search-form input[type="search"]:focus{outline:none;border-color:var(--red)}
.search-form button{
  padding:12px 22px;border:0;border-radius:999px;background:var(--red);color:#fff;
  font-family:var(--font);font-weight:700;font-size:.92rem;cursor:pointer;
}
.search-form button:hover{background:var(--red-600)}

/* ================================================================
   14. FORM
   ================================================================ */
input[type="text"],input[type="email"],input[type="tel"],input[type="url"],textarea,select{
  width:100%;padding:12px 15px;border:1px solid var(--line);border-radius:var(--radius-sm);
  font-family:var(--font);font-size:1rem;background:#fff;color:var(--ink);
}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px var(--red-050)}
button,input[type="submit"]{
  font-family:var(--font);font-weight:700;cursor:pointer;
  background:var(--red);color:#fff;border:0;padding:13px 26px;border-radius:999px;
}
button:hover,input[type="submit"]:hover{background:var(--red-600)}

/* Form đăng ký ở chân trang */
.subscribe{display:flex;gap:8px;margin-top:14px}
.subscribe input[type="email"]{
  flex:1;background:rgba(255,255,255,.06);border:1px solid var(--line-dark);color:#fff;
  border-radius:999px;padding:12px 18px;font-size:.92rem;
}
.subscribe input[type="email"]::placeholder{color:rgba(255,255,255,.45)}
.subscribe input[type="email"]:focus{border-color:var(--red);box-shadow:none;background:rgba(255,255,255,.1)}

/* ================================================================
   15. CHÂN TRANG
   ================================================================ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:clamp(52px,6vw,76px) 0 0;font-size:.94rem}
.site-footer a{color:rgba(255,255,255,.72)}
.site-footer a:hover{color:#fff}
.footer__grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.5fr;gap:clamp(28px,4vw,48px)}
.site-footer h4{
  color:#fff;font-size:.8rem;font-weight:800;letter-spacing:.13em;text-transform:uppercase;
  margin:0 0 16px;
}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:9px}
.footer__brand .brand__name{color:#fff}
.footer__brand .brand__sub{color:rgba(255,255,255,.45)}
.footer__desc{margin:16px 0 18px;max-width:34ch;line-height:1.65}
.footer__contact{list-style:none;padding:0;margin:0;font-size:.9rem;line-height:1.6}
.footer__contact li{margin-bottom:8px;padding-left:22px;position:relative}
.footer__contact li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:50%;background:var(--red)}
.footer__note{font-size:.82rem;color:rgba(255,255,255,.45);margin:12px 0 0;line-height:1.55}

/* Mạng xã hội */
.social{display:flex;gap:10px;margin-top:18px;list-style:none;padding:0}
.social a{
  display:grid;place-items:center;width:40px;height:40px;border-radius:11px;
  background:rgba(255,255,255,.07);border:1px solid var(--line-dark);
  font-size:.72rem;font-weight:800;color:#fff;letter-spacing:.02em;
  transition:background .18s ease,border-color .18s ease,transform .18s ease;
}
.social a:hover{background:var(--red);border-color:var(--red);transform:translateY(-2px)}

.footer__bottom{
  margin-top:clamp(40px,5vw,56px);padding:22px 0;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:.85rem;color:rgba(255,255,255,.5);
}
.footer__bottom nav{display:flex;flex-wrap:wrap;gap:18px}

/* ================================================================
   16. PHỤ TRỢ
   ================================================================ */
.text-center{text-align:center}
.mt-0{margin-top:0}
.mb-0{margin-bottom:0}
.center-btn{display:flex;justify-content:center;margin-top:clamp(32px,4vw,44px)}
.alignwide{max-width:1000px;margin-left:auto;margin-right:auto}
.aligncenter{margin-left:auto;margin-right:auto;display:block}
.alignleft{float:left;margin:.4em 1.6em 1em 0}
.alignright{float:right;margin:.4em 0 1em 1.6em}
.wp-caption{max-width:100%}
.wp-caption-text{font-size:.85rem;color:var(--ink-400);text-align:center;margin-top:.6em}
.empty-state{text-align:center;padding:60px 20px;color:var(--ink-400)}

/* ================================================================
   17. ĐÁP ỨNG (responsive)
   ================================================================ */
@media (max-width:1024px){
  .footer__grid{grid-template-columns:1fr 1fr}
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .hero__inner{grid-template-columns:1fr;gap:36px}
  .hero__media{max-width:440px;margin:0 auto;width:100%}
  .hero__badge{left:0}
  .story__inner{grid-template-columns:1fr;gap:32px}
  .proof{grid-template-columns:1fr 1fr}
  .proof figure:first-child{grid-column:1 / -1;aspect-ratio:16/8}
}

@media (max-width:860px){
  :root{--header-h:64px}
  .nav-toggle{display:block}
  .header-cta{display:none}
  .nav{
    position:fixed;top:var(--header-h);left:0;right:0;bottom:0;
    background:#fff;padding:16px 20px 40px;overflow-y:auto;
    transform:translateX(100%);transition:transform .25s ease;margin-left:0;
    border-top:1px solid var(--line);
  }
  .nav.is-open{transform:translateX(0)}
  .nav ul{flex-direction:column;align-items:stretch;gap:2px}
  .nav a{padding:13px 12px;font-size:1.02rem;border-radius:10px}
  .nav ul ul{
    position:static;opacity:1;visibility:visible;transform:none;
    box-shadow:none;border:0;border-left:2px solid var(--line);
    border-radius:0;margin:2px 0 8px 12px;padding:0 0 0 6px;min-width:0;
  }
  .nav ul ul a{font-size:.94rem;color:var(--ink-600)}
  .nav__cta-mobile{display:block;margin-top:18px}
  .nav__cta-mobile .lad-btn{width:100%}
  .grid--3,.grid--2,.grid--4{grid-template-columns:1fr 1fr}
  .stats__grid{grid-template-columns:1fr 1fr}
}

@media (max-width:600px){
  body{font-size:16px}
  .wrap{padding:0 16px}
  .grid--3,.grid--2,.grid--4{grid-template-columns:1fr}
  .proof{grid-template-columns:1fr}
  .proof figure:first-child{grid-column:auto}
  .sec-head__row{flex-direction:column;align-items:flex-start;gap:14px}
  .btn-row .lad-btn{width:100%}
  .footer__grid{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column;align-items:flex-start}
  .hero__badge{position:static;margin-top:14px;max-width:none}
  .entry__content{font-size:1.02rem}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* nút CTA trong menu di động — chỉ hiện ở khổ nhỏ */
.nav__cta-mobile{display:none}

/* ================================================================
   18. VÁ LỖI HIỂN THỊ
   ================================================================ */

/* Nhãn "Sắp ra mắt" bị .course__head span đè thành chữ trắng trên nền trắng */
.course__head .course__badge{color:var(--ink)}

/* Tên & số bài của thẻ chủ đề phải xuống dòng riêng */
.topic__name,.topic__count{display:block}

/* Trích dẫn trong khối âm bản: bỏ nền sáng kế thừa từ blockquote chung */
.section--ink blockquote,.story__quote{
  background:transparent;border-radius:0;
  padding:2px 0 2px 20px;margin:0 0 24px;
  border-left:3px solid var(--red);
}

/* Danh sách trong chân trang không có dấu chấm đầu dòng */
.site-footer .menu,.site-footer .footer__col ul{list-style:none;padding:0;margin:0}
.site-footer .footer__col li{margin-bottom:9px}

/* Ảnh đại diện bài viết: căn giữa, không để hở khung khi ảnh dọc */
.entry__thumb{
  display:flex;justify-content:center;
  box-shadow:none;border-radius:0;overflow:visible;
}
.entry__thumb img{
  border-radius:var(--radius-lg);box-shadow:var(--shadow);
  max-height:620px;width:auto;object-fit:cover;
}

/* ================================================================
   19. VÁ TRÀN NGANG TRÊN DI ĐỘNG
   Panel menu cũ dùng translateX(100%) khiến trang cuộn ngang 780px.
   Đổi sang mờ dần + trượt xuống: không sinh vùng cuộn ngang.
   ================================================================ */
@media (max-width:860px){
  .nav{
    transform:translateY(-8px);
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .2s ease,transform .2s ease,visibility .2s;
  }
  .nav.is-open{
    transform:translateY(0);
    opacity:1;visibility:visible;pointer-events:auto;
  }
}

/* Ở khổ di động phải bỏ backdrop-filter trên thanh đầu trang: thuộc tính này
   tạo containing block, khiến panel menu position:fixed bị neo vào header
   (cao ~57px, nền trong suốt) thay vì phủ toàn màn hình. */
@media (max-width:860px){
  .site-header{backdrop-filter:none;-webkit-backdrop-filter:none;background:#fff}
}

/* Nút CTA trong menu di động: quy tắc ẩn mặc định nằm sau media query gốc
   nên phải khai báo lại ở cuối file mới thắng. */
@media (max-width:860px){
  .nav__cta-mobile{display:block}
}