@font-face { font-family: "Be Vietnam Pro"; src: url("assets/fonts/be-vietnam-pro-400.ttf") format("truetype"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Be Vietnam Pro"; src: url("assets/fonts/be-vietnam-pro-600.ttf") format("truetype"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Be Vietnam Pro"; src: url("assets/fonts/be-vietnam-pro-800.ttf") format("truetype"); font-weight: 800; font-display: swap; }

:root { --accent: #e51c23; --ink: #171719; --muted: #65656c; --line: #e3e3e6; --soft: #f5f5f7; --white: #fff; --radius: 14px; font-family: "Be Vietnam Pro", sans-serif; color: var(--ink); background: var(--white); scroll-behavior: smooth; }
* { box-sizing: border-box; }
html { scroll-padding-top: 86px; }
body { margin: 0; overflow-x: hidden; line-height: 1.6; }
body.lightbox-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }
:focus-visible { outline: 3px solid rgba(229,28,35,.32); outline-offset: 4px; }

.topline { padding: 8px 20px; background: var(--ink); color: #fff; font-size: 12px; text-align: center; }
.site-header { position: sticky; top: 0; z-index: 30; height: 70px; display: flex; align-items: center; gap: 34px; padding: 0 max(22px, calc((100% - 1180px) / 2)); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.94); backdrop-filter: blur(15px); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: -.03em; white-space: nowrap; }
.brand-mark { display: block; width: 32px; height: 32px; object-fit: contain; }
nav { display: flex; gap: 28px; margin-left: auto; color: #4f4f55; font-size: 13px; }
nav a:hover { color: var(--accent); }
.section-shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 0 22px; border: 1px solid var(--accent); border-radius: 999px; color: #fff; background: var(--accent); font-weight: 600; font-size: 14px; white-space: nowrap; transition: transform .18s ease, background .18s ease; }
.button:hover { background: #be1117; transform: translateY(-2px); }
.button:active { transform: scale(.98); }
.button-small { min-height: 40px; padding-inline: 18px; }
.button-zalo { border-color: #0866ff; background: #0866ff; }
.button-zalo:hover { background: #0053d6; }
.button-ghost { color: var(--ink); border-color: var(--line); background: #fff; }
.button-ghost:hover { color: var(--accent); background: #fff; }

.hero { min-height: 670px; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: clamp(40px, 5vw, 68px); padding-block: 60px; }
.eyebrow, .plan-type { margin: 0 0 12px; color: var(--accent); font-size: 13px; line-height: 1.5; font-weight: 800; letter-spacing: 0; text-transform: none; }
.hero h1 { margin: 0; max-width: 620px; font-size: clamp(46px, 4.8vw, 68px); line-height: 1.12; letter-spacing: -.025em; white-space: nowrap; }
.hero h1 span { color: var(--accent); }
.hero-lead { max-width: 560px; margin: 24px 0 0; color: var(--muted); font-size: 17px; }
.hero-actions { display: flex; gap: 12px; margin-top: 30px; }
.hero-proof { display: flex; align-items: baseline; gap: 12px; margin-top: 32px; padding-top: 22px; border-top: 1px solid var(--line); }
.hero-proof strong { font-size: 17px; }.hero-proof span { color: var(--muted); font-size: 12px; }
.hero-media { min-width: 0; min-height: 470px; display: grid; grid-template-columns: 1.55fr .65fr; gap: 12px; padding: 12px; border-radius: var(--radius); background: var(--soft); }
.hero-media button, .plan-image { position: relative; min-width: 0; padding: 18px; overflow: hidden; border: 0; border-radius: 10px; background: #fff; cursor: zoom-in; }
.hero-media img { width: 100%; height: 100%; object-fit: contain; transition: transform .25s ease; }
.hero-media button:hover img, .plan-image:hover img { transform: scale(1.025); }
.media-main span, .plan-image span { position: absolute; right: 12px; bottom: 12px; padding: 7px 11px; border-radius: 999px; color: #fff; background: rgba(23,23,25,.84); font-size: 10px; font-weight: 600; }

.benefit-bar { display: grid; grid-template-columns: repeat(3, 1fr); padding-inline: max(22px, calc((100% - 1180px) / 2)); border-block: 1px solid var(--line); }
.benefit-bar div { padding: 24px 32px; border-left: 1px solid var(--line); }.benefit-bar div:last-child { border-right: 1px solid var(--line); }
.benefit-bar strong, .benefit-bar span { display: block; }.benefit-bar strong { font-size: 14px; }.benefit-bar span { margin-top: 3px; color: var(--muted); font-size: 11px; }

.pricing { padding-block: 110px; }
.section-heading { max-width: 720px; margin-bottom: 48px; }
.section-heading h2, .final-cta h2 { margin: 0; font-size: clamp(34px, 3.6vw, 48px); line-height: 1.2; letter-spacing: -.02em; }
.section-heading > p:last-child { max-width: 670px; margin: 18px 0 0; color: var(--muted); font-size: 14px; }
.plan-row { display: grid; grid-template-columns: .9fr .7fr 1fr; gap: 28px 38px; margin-top: 20px; padding: 34px; border: 1px solid var(--line); border-radius: var(--radius); }
.plan-heading { display: flex; gap: 18px; }.plan-number { color: #a6a6ac; font-size: 11px; font-weight: 800; }
.plan-heading h3, .support-plan h3 { margin: 0; font-size: clamp(24px, 2.6vw, 34px); line-height: 1.25; letter-spacing: -.015em; }
.plan-heading .plan-type { margin-bottom: 7px; }
.plan-price { display: flex; align-content: flex-start; flex-wrap: wrap; column-gap: 7px; }.plan-price strong { font-size: 29px; line-height: 1.25; letter-spacing: -.04em; }.plan-price span { align-self: center; color: var(--muted); font-size: 12px; }.plan-price small { width: 100%; color: var(--accent); font-size: 12px; font-weight: 600; }
.plan-features { margin: 0; padding: 0; list-style: none; font-size: 13px; }.plan-features li + li { margin-top: 8px; }.plan-features li::before { content: "✓"; margin-right: 8px; color: var(--accent); font-weight: 800; }
.plan-actions { display: flex; align-items: center; gap: 18px; grid-column: 1 / 3; }.text-link { color: var(--muted); border-bottom: 1px solid #aaa; font-size: 12px; font-weight: 600; }
.plan-image { grid-column: 3; grid-row: 2; min-height: 180px; background: var(--soft); }
.plan-image img { width: 100%; height: 100%; max-height: 220px; object-fit: contain; transition: transform .25s ease; }
.plan-student { background: #fafafa; }

.support-plan { display: grid; grid-template-columns: 1.1fr .9fr .75fr auto; align-items: center; gap: 36px; margin-top: 20px; padding: 42px; border-radius: var(--radius); color: #fff; background: var(--ink); }
.support-plan .plan-type { color: #ff656a; }.support-copy p:last-child { max-width: 520px; margin: 14px 0 0; color: #bfc0c5; font-size: 13px; }
.support-options { display: grid; gap: 14px; }.support-options div { padding-bottom: 12px; border-bottom: 1px solid #3e3e43; }.support-options strong { font-size: 24px; }.support-options span { margin-left: 6px; color: #bfc0c5; font-size: 11px; }
.support-plan ul { margin: 0; padding-left: 18px; color: #dedee2; font-size: 12px; }.support-plan li + li { margin-top: 7px; }
.button-light { color: var(--ink); border-color: #fff; background: #fff; }.button-light:hover { color: #fff; border-color: var(--accent); background: var(--accent); }

.process { padding-block: 30px 110px; }.process ol { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }.process li { min-height: 185px; padding: 26px 32px; border-right: 1px solid var(--line); }.process li:first-child { border-left: 1px solid var(--line); }.process li span { display: block; margin-bottom: 40px; color: var(--accent); font-size: 11px; font-weight: 800; }.process li strong { display: block; font-size: 16px; }.process li p { margin: 6px 0 0; color: var(--muted); font-size: 12px; }
.faq { display: grid; grid-template-columns: .75fr 1.25fr; gap: 80px; padding-block: 20px 110px; }.faq-list { border-top: 1px solid var(--line); }.faq-item { border-bottom: 1px solid var(--line); }.faq-question { width: 100%; display: flex; justify-content: space-between; gap: 22px; padding: 23px 0; border: 0; color: var(--ink); background: transparent; text-align: left; font-weight: 600; cursor: pointer; }.faq-question span:last-child { color: var(--accent); font-size: 21px; transition: transform .18s ease; }.faq-question[aria-expanded="true"] span:last-child { transform: rotate(45deg); }.faq-answer p { margin: -5px 45px 22px 0; color: var(--muted); font-size: 13px; }
.final-cta { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; margin-bottom: 80px; padding: 52px; border-radius: var(--radius); background: var(--soft); }.final-cta h2 { max-width: 700px; }
footer { display: flex; align-items: center; gap: 30px; padding: 30px max(22px, calc((100% - 1180px) / 2)); border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }footer p:last-child { margin-left: auto; }
.zalo-float { position: fixed; right: 20px; bottom: 20px; z-index: 25; display: flex; align-items: center; gap: 8px; padding: 7px 14px 7px 7px; border-radius: 999px; color: #fff; background: #0866ff; box-shadow: 0 12px 30px rgba(8,102,255,.28); }.zalo-float span { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; color: #0866ff; background: #fff; font-weight: 800; }.zalo-float strong { font-size: 12px; }

.lightbox[hidden] { display: none; }.lightbox { position: fixed; inset: 0; z-index: 100; display: grid; grid-template-rows: auto 1fr; padding: 12px; background: rgba(12,12,14,.95); }.lightbox-toolbar { display: flex; justify-content: flex-end; align-items: center; gap: 8px; padding-bottom: 10px; color: #fff; }.lightbox-toolbar button { width: 42px; height: 42px; border: 1px solid #4b4b50; border-radius: 50%; color: #fff; background: #242428; cursor: pointer; font-size: 20px; }.zoom-value { min-width: 58px; text-align: center; font-size: 12px; }.lightbox-stage { min-height: 0; display: grid; place-items: center; overflow: auto; }.lightbox-stage img { width: min(92vw, 1500px); max-width: none; max-height: none; transition: width .15s ease; }

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; padding-top: 70px; }.hero-media { min-height: 440px; }.plan-row { grid-template-columns: 1fr 1fr; }.plan-features { grid-column: 1 / 3; }.plan-actions { grid-column: 1; }.plan-image { grid-column: 2; grid-row: 3; }.support-plan { grid-template-columns: 1fr 1fr; }.support-plan .button { justify-self: start; }.faq { grid-template-columns: 1fr; gap: 15px; }
}

@media (max-width: 760px) {
  html { scroll-padding-top: 68px; }.topline { padding-inline: 12px; font-size: 10px; }.site-header { height: 60px; padding-inline: 14px; }.brand > span:last-child, nav { display: none; }.site-header .button { margin-left: auto; }.section-shell { width: calc(100% - 28px); }.hero { min-height: auto; gap: 34px; padding-block: 48px 40px; }.hero h1 { font-size: clamp(36px, 11vw, 48px); line-height: 1.16; letter-spacing: -.015em; white-space: normal; }.hero-lead { margin-top: 18px; font-size: 14px; line-height: 1.7; }.hero-actions { align-items: stretch; flex-direction: column; margin-top: 24px; }.hero-proof { align-items: flex-start; flex-direction: column; gap: 2px; margin-top: 24px; padding-top: 18px; }.hero-media { min-height: 320px; grid-template-columns: 1fr .55fr; padding: 7px; }.hero-media button { padding: 8px; }.benefit-bar { grid-template-columns: 1fr; padding: 0 20px; }.benefit-bar div, .benefit-bar div:last-child { padding: 17px 0; border-right: 0; border-bottom: 1px solid var(--line); border-left: 0; }.benefit-bar div:last-child { border-bottom: 0; }.pricing { padding-block: 68px; }.section-heading { margin-bottom: 30px; }.section-heading h2, .final-cta h2 { font-size: 30px; line-height: 1.3; letter-spacing: -.01em; }.plan-row { grid-template-columns: 1fr; gap: 22px; padding: 24px 20px; }.plan-heading, .plan-price, .plan-features, .plan-actions, .plan-image { grid-column: 1; grid-row: auto; }.plan-heading h3, .support-plan h3 { font-size: 26px; line-height: 1.3; letter-spacing: 0; }.plan-actions { align-items: stretch; flex-direction: column; }.plan-actions .button { width: 100%; }.text-link { align-self: center; }.plan-image { min-height: 190px; }.support-plan { grid-template-columns: 1fr; gap: 26px; padding: 28px 20px; }.support-plan .button { width: 100%; }.process { padding-bottom: 68px; }.process ol { grid-template-columns: 1fr; }.process li, .process li:first-child { min-height: auto; padding: 22px 0; border-right: 0; border-bottom: 1px solid var(--line); border-left: 0; }.process li span { margin-bottom: 14px; }.faq { padding-bottom: 68px; }.final-cta { align-items: stretch; flex-direction: column; margin-bottom: 48px; padding: 28px 20px; }.final-cta .button { width: 100%; }footer { align-items: flex-start; flex-direction: column; gap: 6px; }footer p { margin: 0; }footer p:last-child { margin-left: 0; }.zalo-float { right: 12px; bottom: 12px; }.lightbox { padding: 7px; }.lightbox-stage img { width: 96vw; }
}

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