/* =========================================================
   Stack Link — Link Aggregator and Optimizer page
   Shared visual language: LIGHT GREEN + WHITE theme
   ========================================================= */

        :root {
            --deep-50: #eefaf2;
            /* light-green "dark section" background */
            --deep-100: #e2f6e9;
            --deep-200: #d3f1de;
            --deep-300: #c1ebd0;
            --green-600: #16a34a;
            /* primary accent */
            --green-500: #1fb457;
            --green-400: #34d17c;
            --green-300: #0f7a3c;
            /* readable dark-green text on light backgrounds */
            --ice-50: #ffffff;
            --ice-100: #f3fbf6;
            --line: rgba(22, 163, 74, 0.16);
            --line-strong: rgba(22, 163, 74, 0.32);
            --text-dim: #4b6b5b;
            --text-dim-dark: #3d6b52;
            --ink: #0b1f16;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--ice-50);
            color: var(--ink);
            font-family: 'Inter', sans-serif;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        @media (prefers-reduced-motion: reduce) {

            *,
            *::before,
            *::after {
                animation-duration: .001ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: .001ms !important;
                scroll-behavior: auto !important;
            }
        }

        h1,
        h2,
        h3,
        h4 {
            margin: 0;
            letter-spacing: -0.01em;
            font-weight: 700;
        }

        p {
            margin: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        img {
            max-width: 100%;
            display: block;
        }

        :focus-visible {
            outline: 2px solid var(--green-600);
            outline-offset: 3px;
        }

        .container {
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 28px;
        }

        /* ---------- SCROLL PROGRESS ---------- */
        #scroll-progress {
            position: fixed;
            top: 0;
            left: 0;
            height: 3px;
            width: 0%;
            z-index: 300;
            background: linear-gradient(90deg, var(--green-600), var(--green-400), var(--green-500));
            box-shadow: 0 0 10px rgba(22, 163, 74, .5);
            transition: width .1s linear;
        }

        /* ---------- REVEAL ANIMATIONS ---------- */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity .7s cubic-bezier(.2, .7, .3, 1), transform .7s cubic-bezier(.2, .7, .3, 1);
        }

        .reveal.in {
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-stagger>* {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity .6s cubic-bezier(.2, .7, .3, 1), transform .6s cubic-bezier(.2, .7, .3, 1);
        }

        .reveal-stagger.in>* {
            opacity: 1;
            transform: translateY(0);
        }

        /* ---------- PAGE HERO ---------- */
        .page-hero {
            position: relative;
            overflow: hidden;
            background: linear-gradient(180deg, var(--deep-50), var(--ice-50));
            color: var(--ink);
            padding: 90px 0 70px;
            border-bottom: 1px solid var(--line);
        }

        .page-hero-grid {
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(var(--line) 1px, transparent 1px),
                linear-gradient(90deg, var(--line) 1px, transparent 1px);
            background-size: 46px 46px;
            -webkit-mask-image: radial-gradient(ellipse 800px 500px at 70% 20%, #000, transparent 75%);
            mask-image: radial-gradient(ellipse 800px 500px at 70% 20%, #000, transparent 75%);
        }

        .page-hero-glow {
            position: absolute;
            width: 520px;
            height: 520px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(22, 163, 74, .22), transparent 70%);
            right: -140px;
            top: -160px;
            filter: blur(10px);
            animation: breathe 6s ease-in-out infinite;
        }

        @keyframes breathe {

            0%,
            100% {
                transform: scale(1);
                opacity: .7;
            }

            50% {
                transform: scale(1.12);
                opacity: 1;
            }
        }

        .page-hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            gap: 44px;
            align-items: center;
        }

        .page-hero-crumb {
            color: var(--text-dim);
            font-size: 13px;
            margin-bottom: 18px;
        }

        .page-hero-crumb a {
            color: var(--green-600);
        }

        .page-hero-crumb a:hover {
            color: var(--ink);
        }

        .eyebrow {
            font-size: 14px;
            font-weight: 600;
            letter-spacing: .02em;
            margin-bottom: 4px;
            color: var(--green-600) !important;
        }

        .page-hero h1 {
            font-size: clamp(30px, 4vw, 46px);
            line-height: 1.12;
            margin-top: 6px;
            max-width: 560px;
            color: var(--ink);
        }

        .page-hero .lede {
            margin-top: 20px;
            color: var(--text-dim);
            font-size: 16.5px;
            line-height: 1.65;
            max-width: 520px;
        }

        .page-hero-actions {
            margin-top: 32px;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--green-600);
            box-shadow: 0 10px 30px -10px rgba(22, 163, 74, .6);
            animation: ctaGlow 2.8s ease-in-out infinite;
        }

        @keyframes ctaGlow {

            0%,
            100% {
                box-shadow: 0 10px 30px -10px rgba(22, 163, 74, .55);
            }

            50% {
                box-shadow: 0 10px 34px -6px rgba(52, 209, 124, .8);
            }
        }

        .btn-ghost {
            background: #fff;
            border: 1px solid var(--line-strong);
            color: var(--ink);
            box-shadow: none;
        }

        .btn-ghost::before {
            display: none;
        }

        .btn-ghost:hover {
            background: var(--deep-100);
            border-color: var(--green-500);
        }

        /* hero card: icon + stats */
        .page-hero-card {
            position: relative;
            z-index: 2;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 20px;
            padding: 36px 28px 28px;
            box-shadow: 0 30px 60px -34px rgba(11, 61, 39, .25);
        }

        .page-hero-icon {
            position: relative;
            height: 220px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .phi-ring {
            position: absolute;
            border: 1px solid var(--line-strong);
            border-radius: 50%;
        }

        .phi-ring-1 {
            width: 150px;
            height: 150px;
            animation: spin 30s linear infinite;
        }

        .phi-ring-2 {
            width: 190px;
            height: 190px;
            animation: spin 46s linear infinite reverse;
        }

        .phi-ring-3 {
            width: 230px;
            height: 230px;
            animation: spin 60s linear infinite;
        }

        .phi-ring-1::before,
        .phi-ring-2::before,
        .phi-ring-3::before {
            content: '';
            position: absolute;
            width: 6px;
            height: 6px;
            background: var(--green-500);
            border-radius: 50%;
            top: -3px;
            left: 50%;
            box-shadow: 0 0 12px 2px rgba(31, 180, 87, .6);
        }

        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        .phi-badge {
            position: relative;
            z-index: 2;
            width: 104px;
            height: 104px;
            border-radius: 26px;
            background: linear-gradient(160deg, var(--deep-50), #fff);
            border: 1px solid var(--line-strong);
            display: flex;
            align-items: center;
            justify-content: center;
            animation: floaty 5s ease-in-out infinite;
            box-shadow: 0 20px 40px -20px rgba(11, 61, 39, .25), inset 0 1px 0 rgba(255, 255, 255, .6);
        }

        @keyframes floaty {

            0%,
            100% {
                transform: translateY(0);
            }

            50% {
                transform: translateY(-12px);
            }
        }

        .phi-badge svg {
            width: 44px;
            height: 44px;
            fill: none;
            stroke: var(--green-600);
            stroke-width: 1.6;
            filter: drop-shadow(0 0 10px rgba(31, 180, 87, .3));
            animation: ringShake 4.5s ease-in-out infinite;
            transform-origin: 50% 50%;
        }

        @keyframes ringShake {

            0%,
            88%,
            100% {
                transform: rotate(0deg) scale(1);
            }

            89% {
                transform: rotate(-10deg) scale(1.05);
            }

            90.5% {
                transform: rotate(9deg) scale(1.05);
            }

            92% {
                transform: rotate(-7deg) scale(1.03);
            }

            93.5% {
                transform: rotate(5deg) scale(1.02);
            }

            95% {
                transform: rotate(-3deg) scale(1);
            }

            96.5% {
                transform: rotate(0deg) scale(1);
            }
        }

        .page-hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 14px;
            margin-top: 22px;
            border-top: 1px solid var(--line);
            padding-top: 22px;
        }

        .page-hero-stat {
            text-align: center;
        }

        .page-hero-stat b {
            display: block;
            font-size: 24px;
            font-weight: 700;
            color: var(--ink);
        }

        .page-hero-stat span {
            display: block;
            font-size: 12px;
            color: var(--text-dim);
            margin-top: 4px;
        }

        @media (max-width:900px) {
            .page-hero-inner {
                grid-template-columns: 1fr;
            }
        }

        /* ---------- SECTION HEAD ---------- */
        .section-pad {
            padding: 88px 0;
        }

        .section-head {
            max-width: 600px;
            margin-bottom: 50px;
        }

        .section-head .eyebrow {
            color: var(--green-600);
            font-size: 13.5px;
        }

        .bg-section .section-head .eyebrow {
            color: var(--green-600) !important;
        }

        .section-head h2 {
            font-size: clamp(25px, 3vw, 34px);
            color: var(--ink);
        }

        .bg-section .section-head h2 {
            color: var(--ink);
        }

        .section-head p {
            margin-top: 12px;
            color: var(--text-dim);
            font-size: 15.5px;
            line-height: 1.6;
        }

        .bg-section .section-head p {
            color: var(--text-dim);
        }

        .bg-section {
            background: var(--deep-50);
            color: var(--ink);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        /* ---------- INTRO ---------- */
        .intro-grid {
            display: grid;
            grid-template-columns: 0.85fr 1.15fr;
            gap: 48px;
            align-items: center;
        }

        .intro-grid img {
            border-radius: 16px;
            box-shadow: 0 30px 60px -30px rgba(11, 61, 39, .22);
        }

        .intro-copy .eyebrow {
            color: var(--green-600);
            font-size: 13.5px;
        }

        .intro-copy p {
            color: var(--text-dim);
            font-size: 15.5px;
            line-height: 1.7;
            margin-top: 14px;
        }

        @media (max-width:860px) {
            .intro-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ---------- POINT GRID ---------- */
        .point-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .point-card {
            display: flex;
            gap: 16px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 14px;
            padding: 26px 22px;
            transition: transform .25s, border-color .25s, box-shadow .25s;
        }

        .point-card:hover {
            transform: translateY(-5px);
            border-color: var(--green-500);
            box-shadow: 0 18px 40px -22px rgba(11, 61, 39, .18);
        }

        .point-num {
            flex: 0 0 auto;
            width: 34px;
            height: 34px;
            border-radius: 9px;
            background: linear-gradient(135deg, var(--green-600), var(--green-400));
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .point-num svg {
            width: 17px;
            height: 17px;
        }

        .point-card h4 {
            font-size: 15.5px;
            color: var(--ink);
            margin-bottom: 8px;
        }

        .point-card p {
            font-size: 13.6px;
            color: var(--text-dim);
            line-height: 1.6;
        }

        @media (max-width:900px) {
            .point-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width:560px) {
            .point-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ---------- SERVICE GRID ---------- */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .service-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 16px;
            overflow: hidden;
            transition: transform .25s, box-shadow .25s;
        }

        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 24px 50px -24px rgba(11, 61, 39, .24);
        }

        .service-card-media {
            height: 150px;
            overflow: hidden;
        }

        .service-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .service-card:hover .service-card-media img {
            transform: scale(1.07);
        }

        .service-card-body {
            padding: 20px 20px 22px;
        }

        .service-card-body h3 {
            font-size: 16px;
            color: var(--ink);
            margin-bottom: 8px;
        }

        .service-card-body p {
            font-size: 13.6px;
            color: var(--text-dim);
            line-height: 1.55;
        }

        .service-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            font-size: 13.5px;
            font-weight: 600;
            color: var(--green-600);
        }

        .service-card-link .arrow {
            transition: transform .2s;
        }

        .service-card-link:hover .arrow {
            transform: translateX(3px);
        }

        @media (max-width:900px) {
            .service-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width:560px) {
            .service-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ---------- BRAND STRIP ---------- */
        .brand-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .brand-pill {
            padding: 14px 26px;
            border-radius: 999px;
            background: #fff;
            border: 1px solid var(--line);
            font-weight: 600;
            font-size: 15px;
            color: var(--ink);
            transition: transform .2s, border-color .2s, color .2s;
        }

        .brand-pill:hover {
            transform: translateY(-3px);
            border-color: var(--green-500);
            color: var(--green-600);
        }

        /* ---------- FINAL CTA ---------- */
        .final-cta {
            background: linear-gradient(135deg, var(--deep-100), var(--deep-50));
            border: 1px solid var(--line);
            border-radius: 22px;
            padding: 60px 48px;
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 36px;
            flex-wrap: wrap;
            color: var(--ink);
        }

        .final-cta::after {
            content: '';
            position: absolute;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(22, 163, 74, .25), transparent 70%);
            right: -60px;
            top: -80px;
            filter: blur(6px);
        }

        .final-cta h2 {
            font-size: clamp(23px, 3vw, 30px);
            max-width: 440px;
            position: relative;
            z-index: 1;
            color: var(--ink);
        }

        .final-cta p {
            margin-top: 10px;
            color: var(--text-dim);
            font-size: 15px;
            position: relative;
            z-index: 1;
        }

        .final-cta p.phone {
            margin-top: 14px;
            color: var(--ink);
            font-weight: 600;
        }

        .final-cta p.phone a {
            color: var(--green-600);
        }

        .final-cta .btn {
            position: relative;
            z-index: 1;
            flex-shrink: 0;
        }

        @media (max-width:760px) {
            .final-cta {
                flex-direction: column;
                align-items: flex-start;
                padding: 40px 26px;
            }
        }

        /* ---------- SECURE ACCESS SERVICE: page-specific additions ---------- */

        /* article hero layout: text + quick-action rail instead of stats card */
        .article-hero-inner {
            align-items: start;
        }

        .quick-rail {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .quick-card {
            position: relative;
            display: flex;
            align-items: center;
            gap: 14px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 14px;
            padding: 16px 18px;
            transition: transform .25s, border-color .25s, box-shadow .25s;
            overflow: hidden;
        }

        .quick-card:hover {
            transform: translateX(6px);
            border-color: var(--green-500);
            box-shadow: 0 16px 34px -20px rgba(11, 61, 39, .22);
        }

        .quick-pulse {
            position: absolute;
            top: 14px;
            right: 14px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--green-500);
        }

        .quick-pulse::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: 50%;
            background: var(--green-500);
            animation: quickPing 2s ease-out infinite;
        }

        @keyframes quickPing {
            0% {
                transform: scale(1);
                opacity: .7;
            }

            100% {
                transform: scale(2.6);
                opacity: 0;
            }
        }

        .quick-ico {
            flex: 0 0 auto;
            width: 42px;
            height: 42px;
            border-radius: 11px;
            background: var(--deep-50);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .quick-ico svg {
            width: 20px;
            height: 20px;
            stroke: var(--green-600);
        }

        .quick-card h4 {
            font-size: 14.5px;
            color: var(--ink);
            margin-bottom: 2px;
        }

        .quick-card span {
            font-size: 12.5px;
            color: var(--text-dim);
        }

        .quick-arrow {
            margin-left: auto;
            color: var(--green-600);
            font-weight: 700;
            opacity: 0;
            transform: translateX(-6px);
            transition: opacity .25s, transform .25s;
        }

        .quick-card:hover .quick-arrow {
            opacity: 1;
            transform: translateX(0);
        }

        @media (max-width:900px) {
            .article-hero-inner {
                grid-template-columns: 1fr;
            }
        }

        /* plain article text blocks (What is SAS / Final Thoughts) */
        .article-block {
            max-width: 760px;
        }

        .article-block .eyebrow {
            color: var(--green-600);
        }

        .article-block h2 {
            font-size: clamp(24px, 3vw, 32px);
            color: var(--ink);
            max-width: 640px;
        }

        .article-block p {
            margin-top: 16px;
            color: var(--text-dim);
            font-size: 16px;
            line-height: 1.75;
        }

        /* feature trio with scan-line hover effect */
        .feature-trio {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .scan-card {
            position: relative;
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 28px 24px;
            transition: transform .25s, box-shadow .25s;
        }

        .scan-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 22px 44px -26px rgba(11, 61, 39, .24);
        }

        .scan-line {
            position: absolute;
            left: 0;
            right: 0;
            top: -2px;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--green-400), transparent);
            opacity: 0;
            transform: translateY(-10px);
        }

        .scan-card:hover .scan-line {
            animation: scanSweep 1.4s ease-in-out infinite;
        }

        @keyframes scanSweep {
            0% {
                opacity: 0;
                transform: translateY(-10px);
            }

            15% {
                opacity: 1;
            }

            85% {
                opacity: 1;
            }

            100% {
                opacity: 0;
                transform: translateY(210px);
            }
        }

        .scan-ico {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: var(--deep-50);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            transition: transform .25s;
        }

        .scan-card:hover .scan-ico {
            transform: scale(1.08) rotate(-3deg);
        }

        .scan-ico svg {
            width: 22px;
            height: 22px;
            stroke: var(--green-600);
        }

        .scan-card h3 {
            font-size: 16.5px;
            color: var(--ink);
            margin-bottom: 8px;
        }

        .scan-card p {
            font-size: 13.8px;
            color: var(--text-dim);
            line-height: 1.6;
        }

        @media (max-width:860px) {
            .feature-trio {
                grid-template-columns: 1fr;
            }
        }

        /* animated vertical timeline */
        .timeline {
            position: relative;
            max-width: 720px;
            margin-top: 20px;
            padding-left: 8px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 23px;
            top: 6px;
            bottom: 6px;
            width: 2px;
            background: var(--line-strong);
            height: 90%;
        }

        .timeline-item {
            position: relative;
            display: flex;
            gap: 22px;
            padding: 0 0 34px 0;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-dot {
            flex: 0 0 auto;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: #fff;
            border: 2px solid var(--green-500);
            position: relative;
            z-index: 1;
            margin-top: 2px;
        }

        .timeline-dot::after {
            content: '';
            position: absolute;
            inset: 7px;
            border-radius: 50%;
            background: var(--green-500);
            transform: scale(0);
            transition: transform .4s cubic-bezier(.2, .8, .3, 1.2);
        }

        .reveal-stagger.in .timeline-dot::after {
            transform: scale(1);
        }

        .timeline-body h4 {
            font-size: 15.5px;
            color: var(--ink);
            margin-bottom: 6px;
        }

        .timeline-body p {
            font-size: 13.8px;
            color: var(--text-dim);
            line-height: 1.6;
        }

        /* compact challenge cards */
        .mini-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .mini-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 12px;
            padding: 20px 18px;
            transition: transform .22s, border-color .22s;
        }

        .mini-card:hover {
            transform: translateY(-4px);
            border-color: var(--green-500);
        }

        .mini-card h4 {
            font-size: 14.5px;
            color: var(--ink);
            margin-bottom: 6px;
        }

        .mini-card p {
            font-size: 13px;
            color: var(--text-dim);
            line-height: 1.55;
        }

        @media (max-width:900px) {
            .mini-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width:560px) {
            .mini-grid {
                grid-template-columns: 1fr;
            }
        }

        /* stat band under final CTA */
        .stat-band {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 34px;
            text-align: center;
        }

        .stat-band b {
            display: block;
            font-size: 28px;
            color: var(--ink);
            font-weight: 700;
        }

        .stat-band span {
            display: block;
            font-size: 13px;
            color: var(--text-dim);
            margin-top: 4px;
        }

        @media (max-width:640px) {
            .stat-band {
                grid-template-columns: 1fr;
            }
        }

        /* ---------- animated security visual (hero) ---------- */
        .sas-visual {
            position: relative;
            height: 280px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 10px 0 26px;
        }

        .sas-badge {
            overflow: hidden;
            width: 140px !important;
            height: 140px !important;
            border-radius: 34px !important;
        }

        .sas-badge svg {
            stroke: var(--green-600);
            width: 60px !important;
            height: 60px !important;
        }

        .sas-check {
            animation: phiDraw 1.6s ease-out 1.6s forwards, checkPop 2s ease-in-out 3.4s infinite;
            stroke: var(--green-500) !important;
            stroke-width: 2.2;
        }

        @keyframes checkPop {

            0%,
            100% {
                transform: scale(1);
            }

            50% {
                transform: scale(1.18);
            }
        }

        .sas-beam {
            position: absolute;
            left: -10%;
            top: 0;
            width: 35%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(52, 209, 124, .35), transparent);
            transform: skewX(-18deg);
            animation: sasBeamSweep 3.2s ease-in-out infinite;
        }

        @keyframes sasBeamSweep {
            0% {
                left: -40%;
            }

            45% {
                left: 110%;
            }

            100% {
                left: 110%;
            }
        }

        .sas-tag {
            position: absolute;
            background: #fff;
            border: 1px solid var(--line-strong);
            color: var(--ink);
            font-size: 12px;
            font-weight: 600;
            padding: 6px 13px;
            border-radius: 999px;
            box-shadow: 0 10px 22px -12px rgba(11, 61, 39, .25);
            opacity: 0;
            animation: tagIn .6s ease forwards, tagFloat 4s ease-in-out infinite;
        }

        .sas-tag::before {
            content: '';
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--green-500);
            margin-right: 6px;
            vertical-align: middle;
        }

        .sas-tag-1 {
            top: 6px;
            left: 6%;
            animation-delay: .3s, 1.2s;
        }

        .sas-tag-2 {
            top: 14px;
            right: 2%;
            animation-delay: .6s, 1.6s;
        }

        .sas-tag-3 {
            bottom: 2px;
            left: 32%;
            animation-delay: .9s, 2s;
        }

        @keyframes tagIn {
            to {
                opacity: 1;
            }
        }

        @keyframes tagFloat {

            0%,
            100% {
                transform: translateY(0);
            }

            50% {
                transform: translateY(-7px);
            }
        }

        @media (max-width:900px) {
            .sas-tag-1 {
                left: 2%;
            }

            .sas-tag-2 {
                right: 0;
            }

            .sas-tag-3 {
                left: 38%;
            }
        }


        /* enlarge + recenter the shared orbit rings specifically for the hero security visual */
        .sas-visual .phi-ring-1 {
            width: 190px;
            height: 190px;
        }

        .sas-visual .phi-ring-2 {
            width: 240px;
            height: 240px;
        }

        .sas-visual .phi-ring-3 {
            width: 280px;
            height: 280px;
        }

        /* ---------- link-merge hero visual: several links bonding into one ---------- */
        .linkviz {
            position: relative;
            width: 100%;
            max-width: 460px;
            aspect-ratio: 460/280;
            height: auto;
            margin: 10px auto 34px;
        }

        .link-canvas {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            overflow: visible;
        }

        .lk-path {
            fill: none;
            stroke: var(--line-strong);
            stroke-width: 2.4;
            stroke-linecap: round;
            stroke-dasharray: 3 7;
            opacity: .85;
        }

        .lk-path-1 {
            animation: lkFlow 1.1s linear infinite;
        }

        .lk-path-2 {
            animation: lkFlow 1.1s linear infinite .12s;
        }

        .lk-path-3 {
            animation: lkFlow 1.1s linear infinite .24s;
        }

        @keyframes lkFlow {
            to {
                stroke-dashoffset: -20;
            }
        }

        .lk-out {
            fill: none;
            stroke: var(--green-500);
            stroke-width: 5.5;
            stroke-linecap: round;
            filter: drop-shadow(0 0 7px rgba(52, 209, 124, .55));
        }

        .lk-dot {
            fill: var(--green-500);
            filter: drop-shadow(0 0 5px rgba(52, 209, 124, .85));
        }

        .lk-dot-out {
            fill: #fff;
            filter: drop-shadow(0 0 7px rgba(52, 209, 124, .95));
        }

        .lk-hub {
            position: absolute;
            left: 51%;
            top: 53.6%;
            transform: translate(-50%, -50%);
            z-index: 3;
            width: 80px;
            height: 80px;
            border-radius: 20px;
            background: linear-gradient(160deg, #fff, var(--deep-50));
            border: 1px solid var(--line-strong);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 20px 40px -18px rgba(11, 61, 39, .28), inset 0 1px 0 rgba(255, 255, 255, .7);
            animation: lkPulse 2.4s ease-in-out infinite;
        }

        .lk-hub svg {
            width: 32px;
            height: 32px;
            stroke: var(--green-600);
        }

        @keyframes lkPulse {

            0%,
            100% {
                transform: translate(-50%, -50%) scale(1);
                box-shadow: 0 20px 40px -18px rgba(11, 61, 39, .28);
            }

            50% {
                transform: translate(-50%, -50%) scale(1.08);
                box-shadow: 0 0 0 12px rgba(52, 209, 124, .14), 0 20px 40px -18px rgba(11, 61, 39, .28);
            }
        }

        .lk-tag {
            position: absolute;
            transform: translateY(-50%);
            z-index: 2;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 999px;
            padding: 6px 13px;
            font-size: 11.5px;
            font-weight: 600;
            color: var(--text-dim);
            box-shadow: 0 8px 18px -12px rgba(11, 61, 39, .2);
            white-space: nowrap;
        }

        .lk-tag-1 {
            left: 1%;
            top: 21.4%;
        }

        .lk-tag-2 {
            left: 1%;
            top: 53.6%;
        }

        .lk-tag-3 {
            left: 1%;
            top: 85.7%;
        }

        .lk-tag-out {
            right: 0;
            top: 53.6%;
            transform: translateY(-50%);
            color: var(--green-600);
            border-color: var(--line-strong);
            font-weight: 700;
        }

        .lk-meter {
            position: absolute;
            left: 50%;
            bottom: -8px;
            transform: translateX(-50%);
            width: 62%;
            text-align: center;
        }

        .lk-meter-label {
            display: block;
            font-size: 11px;
            font-weight: 600;
            color: var(--text-dim);
            margin-bottom: 6px;
        }

        .lk-meter-track {
            height: 6px;
            border-radius: 4px;
            background: var(--deep-200);
            overflow: hidden;
        }

        .lk-meter-fill {
            height: 100%;
            width: 15%;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--green-600), var(--green-400));
            animation: lkMeter 3.4s ease-in-out infinite;
        }

        @keyframes lkMeter {
            0% {
                width: 15%;
            }

            45%,
            58% {
                width: 93%;
            }

            100% {
                width: 30%;
            }
        }

        @media (max-width:900px) {

            .lk-tag-1,
            .lk-tag-2,
            .lk-tag-3 {
                left: 0;
            }

            .lk-tag-out {
                right: 0;
            }
        }

        @media (prefers-reduced-motion: reduce) {

            .lk-path,
            .lk-hub,
            .lk-meter-fill {
                animation: none;
            }

            .lk-dot,
            .lk-dot-out {
                display: none;
            }
        }