/* =========================================================
   PETER TRẦN · THÊM MỘT LỐI ĐI
   Responsive static OneSite, v1: 7 sections + form demo
   Palette: Deep Navy / Champagne / Soft Ivory
   ========================================================= */
:root {
  --navy-950:#071522; --navy-900:#0b1d31; --navy-850:#10253d; --navy-800:#133452;
  --navy-700:#1b4264; --gold:#e8c27f; --gold-strong:#f1ca80; --gold-deep:#b58a48;
  --ink:#12283f; --slate:#52667a; --line:#dfE6ef; --paper:#f5f7fa;
  --white:#fff; --radius:18px; --shadow:0 18px 55px rgba(16,38,63,.08);
  --font:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',sans-serif;
}
*,*::before,*::after {box-sizing:border-box}
html {scroll-behavior:smooth; scroll-padding-top:90px}
body {margin:0; color:var(--ink); background:#fff; font:400 15px/1.75 var(--font); overflow-x:hidden; -webkit-font-smoothing:antialiased}
img {display:block; max-width:100%} button,input,select {font:inherit}
button {cursor:pointer} a {color:inherit;text-decoration:none} a,button,input,select { -webkit-tap-highlight-color: transparent }
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible {outline:3px solid #e9b75e;outline-offset:3px}
.svg-sprite {position:absolute;width:0;height:0;overflow:hidden}
.icon {width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}
.container {width:min(1200px,calc(100% - 64px));margin-inline:auto}
.skip-link {position:fixed;top:-80px;left:16px;z-index:1000;padding:10px 16px;background:#fff;color:#111}
.skip-link:focus {top:12px}
.button {display:inline-flex;align-items:center;justify-content:center;gap:13px;border:1px solid transparent;border-radius:100px;padding:17px 28px;font-weight:800;line-height:1.2;font-size:13px;letter-spacing:.015em;transition:transform .2s,background .2s,box-shadow .2s;white-space:normal;text-align:center}
.button:hover {transform:translateY(-2px);box-shadow:0 12px 26px rgba(18,34,53,.15)}
.button .icon {width:18px;height:18px}
.button-gold {background:linear-gradient(120deg,#f4d899 0%,#e3b873 100%);color:#162b44;box-shadow:0 10px 30px rgba(237,189,112,.17)}
.button-gold:hover {background:linear-gradient(120deg,#ffe1a0,#ebbd73)}
.button-navy {background:var(--navy-850);color:#fff;box-shadow:0 8px 20px rgba(9,30,50,.12)}
.button-navy:hover {background:#214765}
.button-small {padding:12px 18px;font-size:11px;gap:10px}
.text-link {font-weight:700;font-size:13px;border-bottom:1px solid currentColor;padding-bottom:5px;transition:opacity .2s}
.text-link:hover {opacity:.7}
.text-link-light {color:#ebf3fd}
.text-link span {padding-left:4px;color:var(--gold)}
.eyebrow {display:flex;align-items:center;gap:12px;color:var(--gold-deep);font-size:11px;line-height:1.5;font-weight:800;letter-spacing:.19em;text-transform:uppercase;margin:0 0 19px}
.eyebrow-line {height:1px;width:26px;background:currentColor}
.eyebrow-gold {color:var(--gold)}
.section {padding:107px 0;position:relative}
.section-dark {color:#fff;background:var(--navy-950)}
.section-heading {max-width:860px;margin-bottom:47px}
.section-heading.center {margin-inline:auto;text-align:center}
.section-heading.center .eyebrow {justify-content:center}
.section-heading h2 {font-weight:800;line-height:1.36;letter-spacing:-.032em;font-size:clamp(26px,3.05vw,41px);margin:0;color:var(--navy-900)}
.section-heading h2 span {color:var(--gold-deep)}
.section-heading p:not(.eyebrow) {margin:19px auto 0;max-width:710px;line-height:1.9;color:var(--slate);font-size:14px}
.section-heading-light h2 {color:white}
.section-heading-light h2 span {color:var(--gold)}
.section-heading-light p:not(.eyebrow) {color:#c7d6e4}
.section-action {display:flex;justify-content:center;margin-top:37px}
.small-disclaimer {color:#738499;font-size:11px;text-align:center;margin:21px auto 0;max-width:800px}

/* Header */
.site-header {position:sticky;top:0;z-index:80;background:rgba(7,21,34,.97);border-bottom:1px solid rgba(255,255,255,.08);backdrop-filter:blur(18px);transition:box-shadow .2s}
.site-header.scrolled {box-shadow:0 12px 30px rgba(5,18,31,.23)}
.header-inner {height:83px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand {display:inline-flex;align-items:center;gap:12px;color:#fff;flex:none}
.brand-emblem {width:44px;height:44px;border:1px solid rgba(232,194,127,.65);border-radius:50%;display:grid;place-items:center;font-family:Georgia,serif;font-size:18px;letter-spacing:-2px;color:#f2d7a7;position:relative}
.brand-emblem-dot {position:absolute;bottom:4px;right:8px;font-size:21px;color:#f0c988}
.brand-copy {display:flex;flex-direction:column;gap:1px}
.brand-copy strong {font-size:15px;line-height:1.4;font-weight:800;letter-spacing:.085em}
.brand-copy small {font-size:9px;font-weight:700;letter-spacing:.17em;color:#d6b782}
.nav {display:flex;align-items:center;gap:24px;margin-left:auto}
.nav a {color:#d9e2ed;font-size:11px;font-weight:700;transition:color .2s}
.nav a:hover {color:var(--gold)}
.nav .nav-mobile-cta {display:none}
.menu-toggle {display:none;background:transparent;border:0;padding:8px;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.menu-toggle span {display:block;width:23px;height:2px;border-radius:2px;background:#fff;transition:transform .2s,opacity .2s}
.menu-toggle[aria-expanded='true'] span:nth-child(1) {transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded='true'] span:nth-child(2) {opacity:0}
.menu-toggle[aria-expanded='true'] span:nth-child(3) {transform:translateY(-7px) rotate(-45deg)}

/* Hero */
.hero {min-height:635px;overflow:hidden;background:radial-gradient(ellipse at 74% 47%,#1e4b78 0%,#122c4b 28%,#08192d 62%,#06111d 100%);position:relative;isolation:isolate}
.hero::after {content:'';position:absolute;inset:0;z-index:-1;opacity:.3;background-image:linear-gradient(rgba(239,210,151,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(239,210,151,.045) 1px,transparent 1px);background-size:74px 74px;mask-image:linear-gradient(90deg,transparent 10%,#000 80%)}
.hero-glow {position:absolute;pointer-events:none;border-radius:50%;filter:blur(60px)}
.hero-glow-one {right:8%;top:13%;width:440px;height:440px;background:rgba(32,100,177,.13)}
.hero-glow-two {right:-13%;bottom:-40%;width:500px;height:500px;background:rgba(226,177,101,.1)}
.hero-grid {min-height:635px;display:grid;grid-template-columns:57% 43%;align-items:center;position:relative}
.hero-copy {padding:70px 0 80px;z-index:2}
.hero .eyebrow {margin-bottom:27px}
.hero-overline {letter-spacing:.22em;font-size:13px;font-weight:700;color:#d8e8f8;margin:0 0 24px}
.hero-overline span {color:var(--gold);margin:0 5px}
.hero h1 {color:#fff;font-size:clamp(34px,4.3vw,62px);line-height:1.24;font-weight:800;letter-spacing:-.045em;max-width:710px;margin:0 0 23px}
.hero h1 span {color:#f1c783;display:block}
.hero-description {color:#cdd8e6;font-size:15px;line-height:1.98;max-width:530px;margin:0}
.hero-actions {display:flex;align-items:center;gap:28px;flex-wrap:wrap;margin-top:30px}
.hero-promise {display:flex;align-items:center;gap:17px;margin-top:44px}
.promise-line {width:28px;height:1px;background:var(--gold)}
.hero-promise p {color:#9eb3c7;font-size:11px;line-height:1.7;letter-spacing:.03em;margin:0}
.hero-promise p span {color:var(--gold);padding:0 5px}
.hero-visual {height:575px;align-self:end;position:relative;display:flex;align-items:flex-end;justify-content:center}
.hero-ring {position:absolute;border:1px solid rgba(223,186,118,.21);border-radius:50%;pointer-events:none}
.hero-ring-one {width:510px;height:510px;right:-105px;top:60px}
.hero-ring-two {width:390px;height:390px;right:-50px;top:120px;border-color:rgba(168,204,239,.16)}
.hero-portrait {position:relative;width:86%;height:91%;margin-right:-30px;z-index:2;display:flex;align-items:center;justify-content:center;border:1px dashed rgba(225,197,154,.2);background:linear-gradient(160deg,rgba(67,112,160,.19),rgba(8,24,46,.12));border-radius:220px 220px 0 0;overflow:hidden}
.hero-portrait::after {content:'';position:absolute;bottom:0;left:0;right:0;height:100px;background:linear-gradient(transparent,#091c30);pointer-events:none}
.hero-portrait.has-image {background:transparent;border-color:transparent}
.hero-portrait.has-image img {object-position:center 15%;object-fit:cover}
.hero-visual-tag {position:absolute;bottom:30px;left:-45px;background:rgba(6,20,37,.86);border:1px solid rgba(232,194,127,.45);padding:17px 22px;z-index:4;display:flex;gap:12px;align-items:center;box-shadow:0 15px 50px rgba(2,10,18,.3)}
.hero-visual-tag>span:last-child {font-weight:800;color:#fff;font-size:11px;letter-spacing:.13em;line-height:1.6}
.hero-visual-tag small {display:block;font-size:10px;color:#bdcfe1;letter-spacing:0;font-weight:400}
.mini-star {font-size:24px;color:var(--gold)}
.hero-bottom-text {position:absolute;bottom:16px;left:0;right:0;text-align:center;font-weight:600;letter-spacing:.35em;font-size:8px;color:rgba(255,255,255,.22)}
.hero-bottom-text span {color:var(--gold);padding:0 9px}
.photo-slot {position:relative;overflow:hidden}
.photo-slot>img {width:100%;height:100%;object-fit:cover;position:absolute;inset:0;z-index:3}
.slot-inner {height:100%;width:100%;min-height:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;padding:12px;text-align:center;color:#8296ac}
.slot-inner strong {font-weight:700;font-size:12px;color:inherit}
.slot-inner span:not(.slot-monogram) {font-size:12px;font-weight:600}
.slot-inner small {font-size:10px;opacity:.85}
.slot-monogram {font-family:Georgia,serif;font-size:clamp(65px,10vw,130px);font-weight:400;line-height:1;letter-spacing:-.1em;color:rgba(234,201,149,.15)}
.slot-inner-portrait {color:#c6d7e6}
.icon-photo {width:29px;height:29px;opacity:.64}

/* Results */
.section-results {background:#fff}
.photo-grid {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.result-card {margin:0;background:#fff;border:1px solid #e7ecf2;box-shadow:var(--shadow);border-radius:14px;overflow:hidden;transition:transform .2s}
.result-card:hover,.gallery-card:hover {transform:translateY(-3px)}
.result-photo {aspect-ratio:1.42;background:linear-gradient(155deg,#f5f8fb 0%,#e8edf5 100%);border-bottom:1px solid #e9edf3}
.result-photo:before,.gallery-photo:before {content:'';position:absolute;inset:18px;border:1px dashed #cdd7e2;border-radius:10px;pointer-events:none}
.result-photo.has-image:before,.gallery-photo.has-image:before {display:none}
.result-card figcaption {padding:13px 17px;display:flex;align-items:center;justify-content:space-between;color:#44596f;font-size:11px;font-weight:700}
.result-card figcaption span {color:#b6a077;font-size:10px}
.results-note {display:flex;max-width:980px;margin:25px auto 0;gap:12px;align-items:flex-start;background:#f5f7fa;padding:15px 18px;border-radius:12px;color:#617386;font-size:11px;line-height:1.8}
.results-note .icon {color:#b58a48;margin-top:1px}

/* Learning */
.section-learning {background:#f5f8fb}
.training-grid {display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.training-card {background:#fff;border:1px solid #e7edf4;border-radius:15px;padding:27px 20px 26px;min-height:260px;position:relative;box-shadow:0 10px 24px rgba(16,49,82,.035)}
.training-card .circle-icon {width:56px;height:56px;background:#edf3f8;border-radius:14px;display:grid;place-items:center;color:#173d60;margin-bottom:24px}
.training-card .circle-icon .icon {width:27px;height:27px}
.training-number {position:absolute;top:22px;right:22px;color:#a7b6c7;font-size:11px;font-weight:700}
.training-card h3 {font-size:13px;line-height:1.5;margin:0 0 10px;font-weight:800;color:#172f49}
.training-card p {font-size:11px;line-height:1.85;color:#697b8d;margin:0}
.training-feature {background:#123151;border-color:#123151}
.training-feature .circle-icon {background:#234665;color:#e8c27f}
.training-feature .training-number {color:#91a8bf}
.training-feature h3 {color:#f1d19b}
.training-feature p {color:#cbd7e4}
.gallery-head {display:flex;align-items:end;justify-content:space-between;gap:30px;margin:67px 0 24px}
.gallery-head .eyebrow {margin:0 0 9px}
.gallery-head h3 {font-size:clamp(18px,2.25vw,27px);line-height:1.5;font-weight:800;letter-spacing:-.015em;margin:0;color:#122c46}
.gallery-head h3 span {color:#cca66b;padding:0 5px}
.gallery-head>p {font-size:12px;color:#728293;margin:0 0 5px;max-width:290px}
.gallery-card {margin:0;background:#fff;border:1px solid #e4ebf3;border-radius:13px;overflow:hidden;transition:transform .2s}
.gallery-photo {aspect-ratio:1.31;background:linear-gradient(155deg,#e8eef5,#dce6ef)}
.gallery-card figcaption {padding:12px 15px 14px;line-height:1.55}
.gallery-card figcaption b {display:block;font-size:12px;color:#223c55}
.gallery-card figcaption small {font-size:10px;color:#8090a1}

/* Why */
.section-why {background:radial-gradient(ellipse at 50% 22%,#1b4163 0%,#0d263e 50%,#081827 100%);overflow:hidden}
.section-why:before {content:'';position:absolute;width:600px;height:600px;border:1px solid rgba(241,206,144,.085);border-radius:50%;top:-300px;left:calc(50% - 300px);box-shadow:0 0 0 75px rgba(241,206,144,.012),0 0 0 160px rgba(241,206,144,.01);pointer-events:none}
.why-container {position:relative;z-index:1}
.why-grid {display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:17px}
.why-card {border-radius:16px;background:rgba(255,255,255,.053);border:1px solid rgba(219,232,247,.11);padding:30px 21px;min-height:235px}
.why-icon {display:grid;place-items:center;width:52px;height:52px;border-radius:14px;background:rgba(234,197,128,.11);color:#f0ca86;margin-bottom:23px}
.why-icon .icon {width:25px;height:25px}
.why-card h3 {font-weight:800;font-size:12px;line-height:1.5;color:#fff;margin:0 0 12px}
.why-card p {margin:0;color:#b9cadc;font-size:11px;line-height:1.85}
.quote-band {margin:36px auto 0;border-top:1px solid rgba(255,255,255,.11);padding:30px 20px 0;text-align:center;max-width:875px;position:relative}
.quote-band>span {color:var(--gold);font-size:42px;font-family:Georgia,serif;line-height:1}
.quote-band blockquote {font-weight:700;font-size:clamp(16px,2.2vw,23px);color:#f7f9fc;line-height:1.75;margin:0 0 13px}
.quote-band b {display:block;color:var(--gold);font-size:12px}

/* Audience */
.section-audience {background:#fff}
.audience-grid {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.audience-card {position:relative;padding:28px 26px;min-height:253px;border-radius:14px;border:1px solid #e9e7e1;background:linear-gradient(145deg,#fcfaf5,#f8f2e6);transition:box-shadow .2s,transform .2s}
.audience-card:hover {transform:translateY(-3px);box-shadow:0 15px 35px rgba(28,50,75,.075)}
.audience-number {position:absolute;top:21px;right:22px;color:#c3a36b;font-size:21px;font-family:Georgia,serif}
.audience-icon {display:grid;place-items:center;width:57px;height:57px;background:#fff;border:1px solid rgba(196,162,109,.28);border-radius:16px;color:#b28a50;margin-bottom:23px}
.audience-icon .icon {width:27px;height:27px}
.audience-card h3 {font-size:13px;font-weight:800;line-height:1.55;margin:0 0 11px;color:#122b43}
.audience-card p {color:#67778a;font-size:11px;line-height:1.9;margin:0}
.audience-summary {text-align:center;margin:29px auto 0;color:#51667a;font-size:13px;max-width:720px;font-weight:600}

/* Work */
.section-work {background:#f3f6f9}
.work-layout {display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:18px;align-items:stretch}
.work-grid {display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:17px}
.work-card {min-height:270px;background:#fff;padding:24px;border-radius:14px;border:1px solid #e3e9f0;position:relative;transition:box-shadow .2s}
.work-card:hover {box-shadow:0 14px 35px rgba(12,39,66,.08)}
.work-number {position:absolute;top:21px;right:23px;font-family:Georgia,serif;color:#d0b17d;font-size:22px}
.work-icon {display:grid;place-items:center;width:53px;height:53px;background:#eef3f7;border-radius:15px;color:#1a4164;margin-bottom:26px}
.work-icon .icon {width:25px;height:25px}
.work-card h3 {font-size:14px;font-weight:800;line-height:1.55;margin:0 0 12px;color:#15304d}
.work-card p {font-size:11px;line-height:1.9;color:#687b8c;margin:0}
.work-side {border-radius:16px;overflow:hidden;background:#143557;display:flex;flex-direction:column;position:relative}
.work-photo {flex:1;min-height:450px;background:radial-gradient(circle at 50% 35%,#315e89 0%,#173c60 45%,#0c253e 100%)}
.work-photo:after {position:absolute;content:'';inset:auto 0 0;height:130px;background:linear-gradient(transparent,rgba(10,32,52,.74));pointer-events:none}
.work-photo .slot-inner {color:#e1eaf2}
.work-photo .slot-monogram {color:rgba(243,206,145,.17)}
.work-side-caption {background:#0e2944;color:#fff;font-weight:800;font-size:13px;line-height:1.75;letter-spacing:.04em;padding:25px 24px}
.work-side-caption span {display:block;color:var(--gold)}
.work-callout {margin-top:30px;border-radius:16px;background:#102e4a;padding:26px 28px;display:flex;align-items:center;justify-content:space-between;gap:35px}
.work-callout p {font-size:13px;line-height:1.85;color:#d9e4ee;margin:0;max-width:720px}
.work-callout .button {flex:none}

/* Signup */
.section-signup {background:radial-gradient(ellipse at 20% 35%,#183f63 0%,#0d243c 53%,#071724 100%)}
.signup-layout {display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1fr);gap:clamp(35px,7vw,105px);align-items:center}
.signup-story h2 {font-size:clamp(31px,3.1vw,46px);font-weight:800;line-height:1.4;letter-spacing:-.035em;margin:0 0 21px;color:#fff}
.signup-story h2 span {color:var(--gold)}
.signup-story>p:not(.eyebrow) {color:#c8d6e4;font-size:14px;line-height:2;max-width:480px;margin:0 0 19px}
.signup-story .signup-personal {color:#f1cf93!important;font-size:18px!important;font-weight:600;margin-top:37px!important}
.signup-signature {display:flex;align-items:center;gap:15px;margin-top:31px}
.signature-logo {font-size:29px;font-family:Georgia,serif;color:#eac484}
.signup-signature b {display:block;color:#fff;font-size:15px}
.signup-signature small {display:block;font-size:11px;color:#9ab3cd}
.form-panel {background:white;color:#102941;border-radius:18px;padding:36px 35px 32px;box-shadow:0 35px 90px rgba(0,0,0,.16)}
.form-kicker {font-size:10px;letter-spacing:.15em;font-weight:800;color:#a27c46}
.form-panel h3 {font-size:25px;margin:7px 0 7px;line-height:1.45;letter-spacing:-.015em}
.form-intro {font-size:12px;color:#61758a;line-height:1.7;margin:0 0 19px}
.demo-banner {display:flex;align-items:flex-start;gap:10px;border-radius:10px;background:#f4f7fb;border:1px solid #e1e9f2;color:#455b72;font-size:10px;line-height:1.7;padding:11px 13px;margin-bottom:21px}
.demo-banner .icon {color:#2d5b82;width:17px;height:17px;margin-top:1px}
.form-field {margin:0 0 17px}
.form-field label {display:block;font-size:12px;font-weight:700;color:#263e56;margin-bottom:7px}
.form-field label span {color:#bc6d45}
.form-field input,.form-field select {appearance:none;background:#f8fafc;display:block;width:100%;height:49px;border:1px solid #dce4ed;border-radius:9px;color:#183550;padding:0 15px;font-size:12px;outline:0;transition:border-color .2s,box-shadow .2s}
.form-field input::placeholder,.form-field select:has(option:first-child:checked) {color:#98a6b5}
.form-field input:focus,.form-field select:focus {border-color:#b68d56;box-shadow:0 0 0 3px rgba(233,198,139,.18)}
.form-field select {background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23687a8b' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-size:16px;background-repeat:no-repeat;background-position:right 14px center;padding-right:40px}
.form-field [aria-invalid='true'] {border-color:#b74343}
.field-error {display:block;color:#b33b3b;font-size:10px;line-height:1.5;margin-top:5px;min-height:0}
.business-disclosure {background:#f4f7fb;border-left:3px solid #bb9152;border-radius:0 9px 9px 0;padding:14px 15px;margin:21px 0 17px}
.business-disclosure h4 {margin:0 0 7px;color:#23394f;font-size:11px;font-weight:800}
.business-disclosure p {font-size:10px;line-height:1.75;margin:0;color:#526679}
.consent-row {display:flex;align-items:flex-start;gap:10px;cursor:pointer}
.consent-row input {appearance:auto;accent-color:#244768;width:17px;height:17px;flex:none;margin:3px 0 0;cursor:pointer}
.consent-row span {font-size:10px;color:#667789;line-height:1.7}
.consent-row a {color:#245c89;text-decoration:underline;text-underline-offset:2px}
.consent-error {margin:5px 0 0}
.form-submit {margin-top:16px;width:100%;border:none;padding-block:17px}
.form-footnote {font-size:10px;color:#8a98a8;line-height:1.7;text-align:center;margin:15px 0 0}
.form-status {margin-top:15px;background:#fff6e5;color:#694b21;border:1px solid #eed29c;border-radius:9px;padding:13px;font-size:11px;line-height:1.7}
.form-status[hidden] {display:none}

/* Footer and extras */
.site-footer {background:#061421;color:#a4b7c9}
.footer-top {padding:47px 0;display:flex;justify-content:space-between;gap:28px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand strong {display:block;color:#fff;letter-spacing:.1em;font-size:18px}
.footer-brand>span {color:var(--gold);letter-spacing:.15em;font-size:10px;font-weight:800}
.footer-brand p {font-size:11px;max-width:380px;margin:12px 0 0;line-height:1.7}
.footer-links {display:flex;gap:24px;align-items:start;flex-wrap:wrap;max-width:540px}
.footer-links a {font-size:11px;color:#c1d0df}
.footer-links a:hover {color:var(--gold)}
.footer-bottom {display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;padding:20px 0;font-size:10px}
.back-to-top {position:fixed;right:23px;bottom:23px;z-index:70;border-radius:50%;background:var(--gold);color:#112b46;display:grid;place-items:center;width:44px;height:44px;opacity:0;pointer-events:none;transform:translateY(12px);transition:opacity .25s,transform .25s;box-shadow:0 8px 20px rgba(0,0,0,.12)}
.back-to-top.visible {opacity:1;pointer-events:auto;transform:translateY(0)}
#policy-dialog {max-width:580px;width:calc(100% - 34px);border:0;border-radius:16px;padding:0;box-shadow:0 20px 80px rgba(0,0,0,.28)}
#policy-dialog::backdrop {background:rgba(4,17,29,.75)}
.policy-dialog-inner {position:relative;padding:34px 32px}
.policy-dialog-inner h2 {margin:0 0 15px;color:#18334f;font-size:24px}
.policy-dialog-inner p:not(.eyebrow) {color:#587086;font-size:12px;line-height:1.9}
.dialog-close {position:absolute;top:11px;right:13px;font-size:28px;color:#4d6177;border:0;background:transparent;line-height:1;padding:6px 10px}
.dialog-ok {margin-top:8px}

/* Join page ready for later wiring */
.join-page {min-height:100vh;background:radial-gradient(ellipse at 50% 5%,#214e75 0%,#112b46 40%,#071522 100%)}
.join-screen {min-height:100vh;display:flex;align-items:center;justify-content:center;padding:40px 18px}
.join-card {background:#fff;border-radius:20px;text-align:center;padding:45px 40px;max-width:480px;width:100%;box-shadow:0 35px 80px rgba(0,0,0,.22)}
.join-symbol {font:43px/1 Georgia,serif;color:#204261;margin-bottom:23px}
.join-symbol span {color:#c79c62}
.join-card .eyebrow {justify-content:center;letter-spacing:.09em;margin-bottom:10px}
.join-card h1 {font-size:26px;letter-spacing:-.02em;line-height:1.4;margin:0 0 12px;color:#10283f}
.join-card>p:not(.eyebrow) {color:#627589;font-size:12px;line-height:1.8}
.join-qr-slot {display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;width:min(235px,100%);aspect-ratio:1;border:2px dashed #c4d2df;border-radius:14px;margin:23px auto;background:#f5f7f9;color:#9aabba}
.join-qr-slot small {font-size:11px}
.join-qr-slot.join-qr-loaded {background:#fff;border:0}
.join-qr-slot img {width:100%;height:100%;object-fit:contain}
.join-zalo-link {width:100%}
.join-zalo-link[hidden] {display:none}
.join-card .join-hint {margin-top:15px;font-size:10px;color:#7c8998}
.join-back {display:inline-block;margin-top:14px;font-size:12px;color:#28577d;font-weight:700}

/* Tablet */
@media (max-width:1080px) {
  .nav {gap:15px}.nav a {font-size:10px}.header-cta {font-size:10px}
  .hero-grid {grid-template-columns:55% 45%}.hero h1 {font-size:clamp(32px,4.6vw,50px)}.hero-visual-tag {left:-15px}
  .training-grid,.why-grid {grid-template-columns:repeat(2,minmax(0,1fr))}
  .training-card,.why-card {min-height:200px}
  .signup-layout {gap:35px}
}
/* Mobile navigation breakpoint */
@media (max-width:920px) {
  .header-inner {height:73px}.nav {display:none;position:absolute;left:0;right:0;top:73px;background:#0b1e32;box-shadow:0 18px 27px rgba(0,0,0,.2);padding:18px 32px 28px;flex-direction:column;align-items:stretch;gap:0}
  .nav.open {display:flex}.nav a {padding:13px 0;font-size:13px;border-bottom:1px solid rgba(255,255,255,.09)}
  .nav .nav-mobile-cta {display:flex;align-items:center;justify-content:space-between;color:#eec583;border:0}
  .header-cta {margin-left:auto}.menu-toggle {display:flex}
  .work-layout {grid-template-columns:minmax(0,1.3fr) minmax(0,.8fr)}.work-card {padding:19px;min-height:265px}
  .work-callout {flex-direction:column;align-items:flex-start;gap:18px}
}
@media (max-width:720px) {
  html {scroll-padding-top:74px}.container {width:min(100% - 36px,560px)}
  .section {padding:72px 0}
  .section-heading {margin-bottom:32px}.section-heading h2 {font-size:clamp(25px,6.4vw,34px)}.section-heading p:not(.eyebrow) {font-size:12px;line-height:1.9;margin-top:13px}
  .eyebrow {font-size:9px;letter-spacing:.14em;gap:9px;margin-bottom:14px}.eyebrow-line {width:20px}
  .header-cta {display:none}.brand-copy strong {font-size:13px}.brand-copy small {font-size:8px}
  .hero {min-height:unset}.hero-grid {display:flex;flex-direction:column;align-items:stretch;min-height:unset}
  .hero-copy {padding:55px 0 18px}.hero-overline {font-size:10px;margin-bottom:19px}.hero h1 {font-size:clamp(35px,8vw,53px);max-width:530px;margin-bottom:18px}.hero-description {font-size:13px;line-height:1.85}
  .hero-actions {gap:20px;margin-top:26px}.hero-actions .button {padding:16px 22px}.hero-promise {margin-top:32px}.hero-promise p {font-size:10px}
  .hero-visual {height:450px;max-height:63vw;min-height:300px;margin-top:17px;align-self:auto}.hero-portrait {width:75%;height:98%;margin-right:0;border-radius:240px 240px 0 0}
  .hero-ring-one {width:420px;height:420px;right:calc(50% - 210px);top:25px}.hero-ring-two {width:310px;height:310px;right:calc(50% - 155px);top:80px}
  .hero-visual-tag {left:0;bottom:26px;padding:13px 15px}.hero-visual-tag>span:last-child {font-size:9px}.hero-visual-tag small {font-size:8px}.hero-bottom-text {font-size:7px;letter-spacing:.1em}
  .photo-grid {gap:11px;grid-template-columns:repeat(2,minmax(0,1fr))}.result-card figcaption {padding:10px;font-size:9px}.result-card figcaption span {font-size:9px}
  .result-photo {aspect-ratio:1.12}.result-photo:before,.gallery-photo:before {inset:10px}.results-note {font-size:10px;padding:13px}
  .training-grid,.why-grid {gap:12px}.training-card,.why-card {padding:21px 16px;min-height:225px}.training-card .circle-icon,.why-icon {margin-bottom:18px}.training-card h3,.why-card h3 {font-size:11px}.training-card p,.why-card p {font-size:10px}
  .gallery-head {margin:45px 0 19px;align-items:start;flex-direction:column;gap:7px}.gallery-head>p {font-size:11px}.gallery-head h3 {font-size:19px}
  .gallery-photo {aspect-ratio:1.12}.gallery-card figcaption {padding:10px}.gallery-card figcaption b {font-size:11px}.gallery-card figcaption small {font-size:9px}
  .quote-band {margin-top:25px;padding-top:25px}.quote-band blockquote {font-size:16px}
  .audience-grid {grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.audience-card {padding:20px 15px;min-height:251px}.audience-icon {width:46px;height:46px;margin-bottom:19px}.audience-icon .icon {width:23px;height:23px}.audience-number {top:15px;right:15px;font-size:18px}.audience-card h3 {font-size:11px}.audience-card p {font-size:10px}.audience-summary {font-size:11px}
  .work-layout {display:flex;flex-direction:column}.work-grid {gap:12px}.work-card {min-height:235px;padding:19px 16px}.work-card h3 {font-size:11px}.work-card p {font-size:10px}.work-icon {width:46px;height:46px;margin-bottom:18px}
  .work-photo {min-height:330px}.work-side {max-width:100%}.work-side-caption {padding:18px 22px;font-size:12px}.work-callout {padding:25px 21px}.work-callout p {font-size:11px}
  .signup-layout {display:flex;flex-direction:column;align-items:stretch;gap:25px}.signup-story h2 {font-size:32px}.signup-story>p:not(.eyebrow) {font-size:12px}.signup-story .signup-personal {font-size:15px!important;margin-top:18px!important}.signup-signature {margin-top:15px}.form-panel {padding:26px 20px}.form-panel h3 {font-size:23px}
  .footer-top {flex-direction:column;gap:23px}.footer-links {gap:15px 22px}.footer-bottom {font-size:9px}.back-to-top {right:13px;bottom:14px;width:41px;height:41px}
}
@media (max-width:390px) {
  .container {width:calc(100% - 30px)}.hero h1 {font-size:32px}
  .hero-actions {align-items:flex-start;flex-direction:column;gap:16px}.hero-visual {min-height:285px}
  .audience-card {min-height:280px}.training-card {min-height:250px}.why-card {min-height:245px}
  .work-card {min-height:270px}
}
@media (prefers-reduced-motion:reduce) {
  *,*::before,*::after {scroll-behavior:auto!important;transition:none!important;animation:none!important}
}