:root {
    --navy: #071d3c;
    --blue: #174fa3;
    --cyan: #13b6c8;
    --green: #17a673;
    --amber: #f59e0b;
    --red: #c83d4d;
    --ink: #15243b;
    --muted: #6b7890;
    --line: #dce5ef;
    --surface: #ffffff;
    --background: #f3f7fb;
    --shadow: 0 18px 45px rgba(15, 39, 70, .10);
}

* { box-sizing: border-box; }
html { min-height: 100%; }
body { margin: 0; min-height: 100vh; color: var(--ink); background: var(--background); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
button, input { font: inherit; }
a { color: inherit; }

.login-body { background: #edf4fa; }
.login-shell { min-height: 100vh; display: grid; grid-template-columns: minmax(360px, 1.1fr) minmax(420px, .9fr); }
.login-brand { position: relative; overflow: hidden; padding: 74px clamp(48px, 7vw, 112px); color: #fff; background: radial-gradient(circle at 20% 15%, rgba(19,182,200,.35), transparent 30%), linear-gradient(140deg, #061a38 0%, #0d3973 60%, #116f88 120%); display: flex; flex-direction: column; justify-content: center; }
.login-brand::after { content: ""; position: absolute; width: 540px; height: 540px; border: 1px solid rgba(255,255,255,.12); border-radius: 50%; right: -180px; bottom: -260px; box-shadow: 0 0 0 72px rgba(255,255,255,.035), 0 0 0 145px rgba(255,255,255,.025); }
.brand-logo { width: 172px; max-height: 58px; object-fit: contain; object-position: left center; }
.brand-logo-large { width: 250px; max-height: 90px; filter: drop-shadow(0 10px 22px rgba(0,0,0,.18)); margin-bottom: 54px; }
.login-brand h1 { max-width: 650px; margin: 12px 0 18px; font-size: clamp(38px, 4.6vw, 66px); line-height: 1.02; letter-spacing: -.04em; }
.login-brand > p { max-width: 590px; margin: 0; color: rgba(255,255,255,.76); font-size: 18px; line-height: 1.7; }
.eyebrow { color: var(--blue); font-weight: 800; font-size: 12px; letter-spacing: .14em; }
.eyebrow.light { color: #5be0e8; }
.brand-points { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; max-width: 620px; margin-top: 72px; }
.brand-points div { padding: 19px; border: 1px solid rgba(255,255,255,.15); border-radius: 18px; background: rgba(255,255,255,.065); backdrop-filter: blur(8px); }
.brand-points span { display: block; color: #5be0e8; font-size: 13px; font-weight: 800; }
.brand-points p { margin: 8px 0 0; font-weight: 700; }

.login-panel { background: #fff; padding: 65px clamp(44px, 7vw, 110px); display: flex; flex-direction: column; justify-content: center; }
.mobile-brand { display: none; }
.login-panel h2 { margin: 16px 0 8px; color: var(--navy); font-size: clamp(30px, 3vw, 45px); letter-spacing: -.035em; }
.muted { color: var(--muted); }
.demo-pill { display: inline-flex; align-self: flex-start; padding: 7px 11px; color: #0d7480; background: #e7fafb; border: 1px solid #b8ecf0; border-radius: 999px; font-size: 12px; font-weight: 800; letter-spacing: .04em; }
.login-form { display: grid; gap: 10px; margin-top: 28px; }
.login-form label { margin-top: 7px; color: #34445c; font-weight: 750; font-size: 14px; }
.login-form input { width: 100%; padding: 15px 16px; color: var(--ink); background: #f8fafc; border: 1px solid #cdd8e5; border-radius: 12px; outline: none; transition: .2s; }
.login-form input:focus { border-color: var(--cyan); background: #fff; box-shadow: 0 0 0 4px rgba(19,182,200,.13); }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 43px; padding: 11px 17px; border: 0; border-radius: 11px; text-decoration: none; font-weight: 800; cursor: pointer; }
.button.primary { color: #fff; background: linear-gradient(135deg, var(--blue), #0e78a0); box-shadow: 0 10px 24px rgba(23,79,163,.23); }
.button.primary:hover { transform: translateY(-1px); }
.button.full { width: 100%; margin-top: 10px; }
.button.ghost { color: var(--blue); background: #edf3fb; }
.button.small { min-height: 36px; padding: 8px 12px; font-size: 13px; }
.button.disabled { color: #74839a; background: #dfe6ee; cursor: not-allowed; box-shadow: none; }
.security-note { display: grid; gap: 4px; margin-top: 24px; padding: 14px 16px; background: #f4f8fc; border-left: 3px solid var(--cyan); border-radius: 7px 12px 12px 7px; }
.security-note strong { color: var(--navy); font-size: 13px; }
.security-note span { color: var(--muted); font-size: 12px; line-height: 1.5; }
.back-link { margin-top: 24px; color: var(--blue); font-weight: 750; font-size: 13px; text-underline-offset: 4px; }
.back-link.inline { display: inline-block; margin: 0 0 26px; }
.alert { padding: 12px 14px; margin-top: 16px; border-radius: 10px; font-size: 13px; }
.alert.error { color: #8d2432; background: #fff0f2; border: 1px solid #f4c7ce; }

.portal-body { background: #f3f7fb; }
.portal-nav { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 12px clamp(24px, 5vw, 72px); background: #fff; border-bottom: 1px solid var(--line); }
.portal-nav nav { display: flex; align-items: center; gap: 28px; }
.portal-nav nav a { color: #43536b; text-decoration: none; font-size: 13px; font-weight: 800; }
.portal-nav nav a:hover { color: var(--blue); }
.portal-hero { min-height: 440px; display: flex; align-items: center; justify-content: center; padding: 68px clamp(28px, 7vw, 110px); color: #fff; text-align: center; background: radial-gradient(circle at 78% 15%, rgba(19,182,200,.22), transparent 28%), linear-gradient(135deg, #061a38 0%, #0b3972 63%, #0c7288 125%); }
.portal-hero > div { width: min(980px, 100%); }
.portal-hero h1 { max-width: 900px; margin: 14px auto 20px; font-size: clamp(42px, 5vw, 68px); line-height: 1.02; letter-spacing: -.045em; }
.portal-hero > div > p { max-width: 720px; margin: 0 auto; color: rgba(255,255,255,.78); font-size: 18px; line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 31px; }
.button.light { color: #fff; background: rgba(255,255,255,.13); border: 1px solid rgba(255,255,255,.23); }
.portal-section { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 80px 0; }
.section-intro { display: flex; align-items: flex-end; justify-content: space-between; gap: 28px; }
.section-intro h2 { margin: 8px 0 0; color: var(--navy); font-size: clamp(31px, 4vw, 46px); letter-spacing: -.04em; }
.section-intro > p { max-width: 430px; margin: 0; color: var(--muted); line-height: 1.6; }
.voucher-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 35px; }
.voucher-card { position: relative; display: flex; flex-direction: column; min-height: 370px; padding: 28px; background: #fff; border: 1px solid #e1e9f1; border-radius: 20px; box-shadow: 0 12px 34px rgba(18,47,82,.07); }
.voucher-card.featured { border: 2px solid var(--cyan); transform: translateY(-9px); box-shadow: 0 20px 48px rgba(14,103,130,.14); }
.popular-label { position: absolute; top: 19px; right: 19px; padding: 6px 9px; color: #08707a; background: #e2f9fa; border-radius: 999px; font-size: 9px; font-weight: 900; letter-spacing: .08em; }
.voucher-duration { color: var(--blue); font-size: 12px; font-weight: 900; letter-spacing: .13em; }
.voucher-card h3 { margin: 20px 0 9px; color: var(--navy); font-size: 25px; }
.voucher-card p { margin: 0; color: var(--muted); line-height: 1.65; }
.voucher-benefits { display: grid; gap: 8px; margin: 20px 0 0; padding: 0; list-style: none; color: var(--navy); font-size: 14px; font-weight: 800; }
.voucher-benefits li { display: flex; align-items: center; gap: 9px; }
.voucher-benefits li::before { content: "✓"; display: grid; place-items: center; width: 21px; height: 21px; flex: 0 0 21px; color: #087759; background: #ddf8ee; border-radius: 50%; font-size: 13px; font-weight: 900; }
.voucher-price { margin-top: auto; padding-top: 32px; color: var(--navy); font-size: 34px; letter-spacing: -.035em; }
.voucher-card .button { margin-top: 20px; }
.pppoe-section { display: grid; grid-template-columns: 1fr minmax(390px, .72fr); gap: 70px; align-items: center; padding: 78px clamp(28px, 7vw, 110px); color: #fff; background: linear-gradient(135deg, #071d3c, #123e72); }
.pppoe-info h2 { max-width: 600px; margin: 12px 0 18px; font-size: clamp(34px, 4vw, 52px); letter-spacing: -.04em; }
.pppoe-info > p { max-width: 590px; color: rgba(255,255,255,.72); font-size: 17px; line-height: 1.7; }
.pppoe-info ul { display: grid; gap: 13px; padding: 0; margin: 28px 0 0; list-style: none; }
.pppoe-info li { position: relative; padding-left: 28px; color: rgba(255,255,255,.88); }
.pppoe-info li::before { content: "✓"; position: absolute; left: 0; color: #5be0e8; font-weight: 900; }
.pppoe-login-card { padding: 32px; color: var(--ink); background: #fff; border-radius: 20px; box-shadow: 0 26px 60px rgba(0,0,0,.22); }
.pppoe-login-card h2 { margin: 16px 0 8px; color: var(--navy); font-size: 29px; letter-spacing: -.03em; }
.portal-topbar { position: static; }
.voucher-checkout-shell { min-height: calc(100vh - 148px); }
.checkout-title { margin: 8px 0 10px; color: var(--navy); font-size: 38px; letter-spacing: -.04em; }
.buyer-field { display: grid; gap: 8px; margin-top: 24px; }
.buyer-field label { color: #34445c; font-size: 13px; font-weight: 800; }
.buyer-field input { width: 100%; padding: 14px 16px; color: var(--ink); background: #f8fafc; border: 1px solid #cdd8e5; border-radius: 12px; outline: none; }
.buyer-field input:focus { border-color: var(--cyan); background: #fff; box-shadow: 0 0 0 4px rgba(19,182,200,.13); }
.method-title { margin-top: 30px !important; font-size: 21px !important; }
.whatsapp-help { position: fixed; right: 24px; bottom: 24px; z-index: 30; min-height: 52px; display: inline-flex; align-items: center; gap: 10px; padding: 10px 17px 10px 13px; color: #fff; background: #20b858; border: 2px solid #fff; border-radius: 999px; box-shadow: 0 12px 30px rgba(0,0,0,.22); text-decoration: none; font-size: 13px; font-weight: 850; }
.whatsapp-help:hover { background: #159b49; transform: translateY(-1px); }
.whatsapp-help svg { width: 27px; height: 27px; flex: 0 0 27px; fill: currentColor; }

.topbar { position: sticky; top: 0; z-index: 10; min-height: 78px; display: flex; align-items: center; justify-content: space-between; padding: 12px clamp(24px, 5vw, 72px); background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(14px); }
.brand-link { display: flex; align-items: center; gap: 18px; color: var(--navy); text-decoration: none; font-weight: 850; }
.brand-link span { padding-left: 18px; border-left: 1px solid var(--line); }
.topbar-account { display: flex; align-items: center; gap: 11px; }
.topbar-account > div { display: grid; gap: 2px; }
.topbar-account strong { font-size: 13px; }
.topbar-account small { color: var(--muted); font-size: 11px; }
.avatar { width: 38px; height: 38px; display: grid; place-items: center; color: #fff; background: linear-gradient(135deg, var(--blue), var(--cyan)); border-radius: 50%; font-size: 12px; font-weight: 900; }
.dashboard-shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 50px 0 62px; }
.welcome-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; }
.welcome-row h1 { margin: 8px 0 7px; color: var(--navy); font-size: clamp(29px, 4vw, 45px); letter-spacing: -.04em; }
.welcome-row p { margin: 0; }
.status { display: inline-flex; align-items: center; gap: 8px; padding: 7px 11px; border-radius: 999px; font-size: 12px; font-weight: 800; white-space: nowrap; }
.status i { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.status.active, .status.paid { color: #08764f; background: #e5f8ef; }
.status.unpaid { color: #9a5d00; background: #fff4d9; }
.demo-banner { display: flex; align-items: center; gap: 13px; margin-top: 28px; padding: 13px 17px; color: #0c6470; background: #e8fbfc; border: 1px solid #bbecef; border-radius: 13px; font-size: 13px; }
.demo-banner strong { color: #074d57; }
.metrics-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 24px; }
.metric-card, .invoice-card, .service-card, .flow-section, .history-section { background: var(--surface); border: 1px solid #e2eaf2; border-radius: 18px; box-shadow: 0 9px 28px rgba(20,53,89,.055); }
.metric-card { display: flex; align-items: center; gap: 15px; padding: 22px; }
.metric-icon { flex: 0 0 48px; height: 48px; display: grid; place-items: center; border-radius: 14px; font-size: 12px; font-weight: 900; }
.metric-icon.blue { color: #1b5db0; background: #e6f0fc; }
.metric-icon.green { color: #08764f; background: #e6f8ef; }
.metric-icon.amber { color: #a06100; background: #fff2d6; }
.metric-card div { display: grid; gap: 4px; }
.metric-card small { color: var(--muted); }
.metric-card strong { color: var(--navy); font-size: 17px; }
.metric-card span:last-child { color: var(--muted); font-size: 12px; }
.content-grid { display: grid; grid-template-columns: 1.4fr .8fr; gap: 20px; margin-top: 20px; }
.invoice-card, .service-card { padding: 25px; }
.card-heading, .section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.card-heading h2, .section-heading h2, .service-card h2, .payment-layout h2 { margin: 5px 0 0; color: var(--navy); font-size: 24px; letter-spacing: -.025em; }
.invoice-details { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 24px 0; }
.invoice-details div { display: grid; gap: 7px; padding: 15px; background: #f6f9fc; border-radius: 12px; }
.invoice-details small { color: var(--muted); }
.amount { color: var(--blue); font-size: 20px; }
.invoice-actions { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding-top: 20px; border-top: 1px solid var(--line); }
.invoice-actions p { margin: 0; color: var(--muted); font-size: 13px; }
.service-card dl { margin: 23px 0 0; }
.service-card dl div { display: flex; justify-content: space-between; gap: 18px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.service-card dt { color: var(--muted); font-size: 13px; }
.service-card dd { margin: 0; text-align: right; color: var(--navy); font-weight: 750; font-size: 13px; }
.flow-section, .history-section { margin-top: 20px; padding: 25px; }
.flow-grid { display: grid; grid-template-columns: 1fr 45px 1fr 45px 1fr 45px 1fr; align-items: start; margin-top: 27px; }
.flow-step { text-align: center; }
.flow-step > span { width: 43px; height: 43px; display: grid; place-items: center; margin: auto; color: #6c7b90; background: #eef2f6; border: 2px solid #dfe7ef; border-radius: 50%; font-weight: 900; }
.flow-step.complete > span { color: #fff; background: var(--green); border-color: var(--green); }
.flow-step.current > span { color: #fff; background: var(--blue); border-color: var(--blue); box-shadow: 0 0 0 7px #e6effa; }
.flow-step strong { display: block; margin-top: 13px; color: var(--navy); font-size: 13px; }
.flow-step small { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; }
.flow-line { height: 2px; margin-top: 21px; background: #dbe4ed; }
.table-wrap { overflow-x: auto; margin-top: 20px; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 14px 15px; border-bottom: 1px solid var(--line); text-align: left; font-size: 13px; }
th { color: var(--muted); background: #f7f9fc; font-size: 11px; letter-spacing: .04em; text-transform: uppercase; }
.invoice-download { display: inline-flex; align-items: center; justify-content: center; min-height: 32px; padding: 7px 11px; color: var(--blue); background: #eaf2fc; border-radius: 9px; text-decoration: none; font-size: 12px; font-weight: 850; white-space: nowrap; }
.invoice-download:hover { color: #fff; background: var(--blue); }
.empty-cell { padding: 26px 15px; color: var(--muted); text-align: center; }
.footer { display: flex; justify-content: space-between; gap: 20px; padding: 22px clamp(24px, 5vw, 72px); color: var(--muted); background: #fff; border-top: 1px solid var(--line); font-size: 12px; }
.support-contact { display: grid; grid-template-columns: minmax(230px, .55fr) 1.45fr; gap: 34px; padding: 34px clamp(24px, 5vw, 72px); color: var(--ink); background: #f7fafc; border-top: 1px solid var(--line); }
.support-contact h2 { margin: 7px 0 0; color: var(--navy); font-size: 21px; letter-spacing: -.02em; }
.support-contact-grid { display: grid; grid-template-columns: .8fr 1fr 1.65fr; gap: 24px; }
.support-contact-grid p, .support-contact-grid address { display: grid; align-content: start; gap: 7px; margin: 0; color: #53647a; font-size: 13px; line-height: 1.6; font-style: normal; }
.support-contact-grid strong { color: var(--navy); font-size: 12px; }
.support-contact-grid a { color: var(--blue); text-decoration: none; font-weight: 750; overflow-wrap: anywhere; }
.support-contact-grid a:hover { text-decoration: underline; }

.payment-layout { display: grid; grid-template-columns: 1.35fr .65fr; gap: 24px; margin-top: 32px; }
.payment-layout > div, .checkout-summary { padding: 28px; background: #fff; border: 1px solid #e2eaf2; border-radius: 18px; box-shadow: var(--shadow); }
.payment-layout h2 { font-size: 31px; }
.method-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; margin-top: 25px; }
.method-card { min-height: 140px; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; gap: 5px; padding: 18px; color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 14px; cursor: default; }
.method-card.selected { border: 2px solid var(--blue); background: #f5f9ff; box-shadow: 0 0 0 4px #eaf2fc; }
.method-card small { color: var(--muted); }
.method-icon { width: 39px; height: 39px; display: grid; place-items: center; margin-bottom: 8px; color: var(--blue); background: #e5effb; border-radius: 11px; font-size: 11px; font-weight: 900; }
.demo-checkout-form { margin-top: 8px; }
.method-options .method-card { position: relative; }
.method-options .method-card input { width: 18px; height: 18px; margin: 0 0 6px; accent-color: var(--blue); }
.method-options .method-card:has(input:checked) { border: 2px solid var(--blue); background: #f5f9ff; box-shadow: 0 0 0 4px #eaf2fc; }
.integration-note { margin-top: 22px; padding: 17px; color: #6e4d00; background: #fff7df; border: 1px solid #f0d898; border-radius: 12px; }
.integration-note p { margin: 6px 0 0; color: #80621b; font-size: 13px; line-height: 1.6; }
.integration-note.testing-note { color: #075a65; background: #eafafb; border-color: #b9e7ea; }
.integration-note.testing-note p { color: #286b72; }
.checkout-summary { align-self: start; }
.invoice-label { color: var(--blue); font-size: 11px; font-weight: 900; letter-spacing: .1em; }
.summary-line, .summary-total { display: flex; justify-content: space-between; gap: 18px; padding: 15px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.summary-line span, .summary-total span { color: var(--muted); }
.summary-line strong { text-align: right; }
.summary-total { margin: 8px 0 12px; border-bottom: 0; }
.summary-total strong { color: var(--blue); font-size: 22px; }
.center { display: block; margin-top: 10px; text-align: center; }
.demo-payment-box { display: grid; gap: 6px; margin-top: 22px; padding: 20px; background: #f4f8fc; border: 1px solid var(--line); border-radius: 14px; }
.demo-payment-box span { color: var(--muted); font-size: 12px; }
.demo-payment-box strong { margin-bottom: 8px; color: var(--navy); font-size: 18px; }
.demo-payment-box small { color: var(--muted); }
.success-panel { max-width: 920px; margin: 0 auto; padding: 42px; text-align: center; background: #fff; border: 1px solid #dfe9f2; border-radius: 22px; box-shadow: var(--shadow); }
.success-mark { width: 68px; height: 68px; display: grid; place-items: center; margin: 0 auto 18px; color: #fff; background: var(--green); border-radius: 50%; font-size: 34px; font-weight: 900; box-shadow: 0 0 0 9px #e3f6ee; }
.success-panel h1 { margin: 10px 0 12px; color: var(--navy); font-size: clamp(30px, 4vw, 44px); letter-spacing: -.035em; }
.success-panel > p { max-width: 680px; margin: 0 auto; color: var(--muted); line-height: 1.65; }
.testing-timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 30px 0 22px; }
.testing-timeline div { padding: 17px 10px; background: #f5f9fc; border: 1px solid var(--line); border-radius: 13px; }
.testing-timeline span { width: 30px; height: 30px; display: grid; place-items: center; margin: 0 auto 9px; color: #fff; background: var(--green); border-radius: 50%; font-size: 12px; font-weight: 900; }
.testing-timeline strong, .testing-timeline small { display: block; }
.testing-timeline strong { color: var(--navy); font-size: 13px; }
.testing-timeline small { margin-top: 4px; color: var(--muted); font-size: 11px; }
.credential-card { margin: 22px 0; padding: 22px; text-align: left; background: #f7fafe; border: 1px solid var(--line); border-radius: 15px; }
.credential-card > span { color: var(--blue); font-size: 11px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.credential-card dl { margin: 14px 0 0; }
.credential-card dl div { display: flex; justify-content: space-between; gap: 18px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.credential-card dl div:last-child { border-bottom: 0; }
.credential-card dt { color: var(--muted); }
.credential-card dd { min-width: 0; margin: 0; color: var(--navy); text-align: right; overflow-wrap: anywhere; word-break: break-word; font-weight: 800; }
.success-panel .button { margin-top: 22px; }
.redirect-help { margin-top: 14px!important; font-size: 12px; }

@media (max-width: 900px) {
    .login-shell { grid-template-columns: 1fr; }
    .login-brand { display: none; }
    .login-panel { min-height: 100vh; padding: 40px max(24px, 8vw); }
    .mobile-brand { display: block; margin-bottom: 45px; }
    .pppoe-section { grid-template-columns: 1fr; }
    .voucher-grid { grid-template-columns: 1fr; }
    .voucher-card.featured { transform: none; }
    .pppoe-section { gap: 45px; }
    .metrics-grid, .content-grid, .payment-layout { grid-template-columns: 1fr; }
    .flow-grid { grid-template-columns: repeat(4, 1fr); gap: 8px; }
    .flow-line { display: none; }
    .method-grid { grid-template-columns: 1fr; }
    .testing-timeline { grid-template-columns: repeat(2, 1fr); }
    .support-contact { grid-template-columns: 1fr; }
    .support-contact-grid { grid-template-columns: repeat(2, 1fr); }
    .support-contact-grid address { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
    .portal-nav { min-height: 64px; align-items: center; padding: 4px 18px; overflow: visible; }
    .portal-nav nav { display: none; }
    .portal-hero { min-height: auto; justify-content: flex-start; padding: 54px 24px; text-align: left; }
    .portal-hero h1 { font-size: 42px; }
    .portal-hero h1, .portal-hero > div > p { margin-left: 0; margin-right: 0; }
    .hero-actions { justify-content: flex-start; }
    .section-intro { align-items: flex-start; flex-direction: column; }
    .portal-section { width: min(100% - 28px, 1180px); padding: 58px 0; }
    .pppoe-section { padding: 58px 20px; }
    .pppoe-login-card { padding: 24px 20px; }
    .topbar { align-items: flex-start; }
    .brand-link span, .topbar-account > div { display: none; }
    .brand-logo { width: 170px; max-height: 64px; }
    .portal-nav .brand-logo { width: 205px; height: auto; max-height: 54px; transform: none; }
    .topbar .brand-logo { width: 150px; }
    .whatsapp-help { right: 15px; bottom: 15px; width: 56px; min-height: 56px; justify-content: center; padding: 0; }
    .whatsapp-help span { display: none; }
    .dashboard-shell { width: min(100% - 28px, 1180px); padding-top: 32px; }
    .welcome-row { align-items: flex-start; flex-direction: column; }
    .demo-banner { align-items: flex-start; flex-direction: column; }
    .invoice-details { grid-template-columns: 1fr; }
    .invoice-actions, .footer { align-items: stretch; flex-direction: column; }
    .invoice-actions .button { width: 100%; }
    .flow-grid { grid-template-columns: repeat(2, 1fr); row-gap: 24px; }
    .card-heading { flex-direction: column; }
    .payment-layout > div, .checkout-summary, .invoice-card, .service-card, .flow-section, .history-section { padding: 20px; }
    .success-panel { padding: 28px 18px; }
    .credential-card dl div { align-items: flex-start; flex-direction: column; gap: 5px; }
    .credential-card dd { text-align: left; }
    .support-contact { gap: 24px; padding: 30px 20px 88px; }
    .support-contact-grid { grid-template-columns: 1fr; gap: 18px; }
    .support-contact-grid address { grid-column: auto; }
}