diff --git a/assets/index.html b/assets/index.html
new file mode 100644
index 0000000..6c189fc
--- /dev/null
+++ b/assets/index.html
@@ -0,0 +1,824 @@
+<!DOCTYPE html>
+<html lang="ru">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover, user-scalable=yes">
+    <title>IoT Контроллер давления насоса | 0–8 атм | Точная шкала 0.1 атм</title>
+    <style>
+        * {
+            box-sizing: border-box;
+            user-select: none; /* улучшение тактильного опыта, не блокирует ввод */
+        }
+
+        body {
+            margin: 0;
+            min-height: 100vh;
+            background: linear-gradient(145deg, #e0e5ec 0%, #cbd0d9 100%);
+            font-family: 'Segoe UI', 'Roboto', system-ui, -apple-system, 'Helvetica Neue', sans-serif;
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            padding: 20px;
+        }
+
+        /* карточка прибора */
+        .dashboard {
+            max-width: 900px;
+            width: 100%;
+            background: rgba(255, 255, 255, 0.3);
+            backdrop-filter: blur(2px);
+            border-radius: 64px 64px 48px 48px;
+            box-shadow: 0 20px 35px rgba(0, 0, 0, 0.2), inset 0 1px 1px rgba(255, 255, 255, 0.6);
+            padding: 24px 20px 35px;
+            transition: all 0.2s ease;
+        }
+
+        /* контейнер манометра */
+        .gauge-container {
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            margin: 10px 0 15px 0;
+        }
+
+        canvas {
+            width: 100%;
+            height: auto;
+            max-width: 480px;
+            aspect-ratio: 1 / 1;
+            background: #fef9ef;
+            border-radius: 50%;
+            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.25), inset 0 2px 4px rgba(255, 255, 255, 0.8);
+            display: block;
+        }
+
+        /* fallback для старых браузеров */
+        @supports not (aspect-ratio: 1 / 1) {
+            .gauge-container {
+                position: relative;
+                width: 100%;
+                max-width: 480px;
+                margin: 0 auto;
+            }
+            .gauge-container::before {
+                content: "";
+                display: block;
+                padding-top: 100%;
+            }
+            canvas {
+                position: absolute;
+                top: 0;
+                left: 0;
+                width: 100%;
+                height: 100%;
+            }
+        }
+
+        .pressure-value {
+            text-align: center;
+            font-size: 1.9rem;
+            font-weight: 700;
+            margin-top: -5px;
+            margin-bottom: 20px;
+            color: #1f2a3e;
+            background: rgba(255, 255, 240, 0.75);
+            display: inline-block;
+            width: auto;
+            padding: 6px 28px;
+            border-radius: 60px;
+            backdrop-filter: blur(4px);
+            letter-spacing: 1px;
+            font-family: 'JetBrains Mono', monospace;
+        }
+
+        .value-wrapper {
+            display: flex;
+            justify-content: center;
+        }
+
+        /* панель ползунков (под большими пальцами) */
+        .sliders-panel {
+            background: #eef2f7;
+            border-radius: 48px;
+            padding: 24px 20px 20px;
+            margin-top: 20px;
+            box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0.05), 0 8px 20px rgba(0, 0, 0, 0.1);
+        }
+
+        .slider-group {
+            margin-bottom: 28px;
+        }
+
+        .slider-group label {
+            display: flex;
+            justify-content: space-between;
+            font-weight: 600;
+            color: #1e2b3c;
+            font-size: 1.2rem;
+            margin-bottom: 12px;
+            letter-spacing: -0.2px;
+        }
+
+        .slider-group span {
+            background: #2c3e4e;
+            color: white;
+            padding: 4px 14px;
+            border-radius: 30px;
+            font-size: 0.9rem;
+            font-weight: 500;
+        }
+
+        input[type="range"] {
+            width: 100%;
+            height: 8px;
+            -webkit-appearance: none;
+            background: linear-gradient(90deg, #2c7da0, #61a5c2);
+            border-radius: 12px;
+            outline: none;
+            cursor: pointer;
+        }
+
+        input[type="range"]:focus {
+            outline: none;
+        }
+
+        input[type="range"]::-webkit-slider-thumb {
+            -webkit-appearance: none;
+            width: 34px;
+            height: 34px;
+            background: #1f6392;
+            border-radius: 50%;
+            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
+            border: 2px solid white;
+            cursor: pointer;
+            transition: 0.08s;
+        }
+
+        input[type="range"]::-webkit-slider-thumb:active {
+            transform: scale(1.15);
+            background: #0f4b70;
+        }
+
+        input[type="range"]::-moz-range-thumb {
+            width: 34px;
+            height: 34px;
+            background: #1f6392;
+            border-radius: 50%;
+            border: 2px solid white;
+            cursor: pointer;
+        }
+
+        .threshold-hint {
+            display: flex;
+            justify-content: space-between;
+            margin-top: 8px;
+            font-size: 0.75rem;
+            color: #2c3e50;
+            padding: 0 6px;
+            font-weight: 500;
+        }
+
+        .save-btn {
+            width: 100%;
+            background: #2b6e4f;
+            border: none;
+            padding: 16px 12px;
+            font-size: 1.35rem;
+            font-weight: bold;
+            color: white;
+            border-radius: 60px;
+            margin-top: 28px;
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            gap: 12px;
+            cursor: pointer;
+            box-shadow: 0 6px 0 #1b4d36;
+            transition: 0.08s linear;
+            font-family: inherit;
+            letter-spacing: 1px;
+        }
+
+        .save-btn:active {
+            transform: translateY(3px);
+            box-shadow: 0 3px 0 #1b4d36;
+        }
+
+        .toast-msg {
+            visibility: hidden;
+            min-width: 210px;
+            background-color: #1e2f3c;
+            color: #e9f5e9;
+            text-align: center;
+            border-radius: 40px;
+            padding: 10px 20px;
+            position: fixed;
+            bottom: 30px;
+            left: 50%;
+            transform: translateX(-50%);
+            font-size: 1rem;
+            font-weight: 500;
+            opacity: 0;
+            transition: opacity 0.2s, visibility 0.2s;
+            z-index: 1000;
+            backdrop-filter: blur(12px);
+            background-color: rgba(30, 47, 60, 0.92);
+            pointer-events: none;
+            font-family: monospace;
+        }
+
+        .toast-msg.show {
+            visibility: visible;
+            opacity: 1;
+        }
+
+        @media (max-width: 550px) {
+            .dashboard {
+                padding: 18px 16px 30px;
+            }
+            .slider-group label {
+                font-size: 1rem;
+            }
+            .save-btn {
+                padding: 14px 12px;
+                font-size: 1.2rem;
+            }
+            .pressure-value {
+                font-size: 1.5rem;
+            }
+        }
+
+        @media (min-width: 1200px) {
+            .dashboard {
+                max-width: 950px;
+            }
+            canvas {
+                max-width: 500px;
+            }
+        }
+
+        footer {
+            text-align: center;
+            font-size: 0.7rem;
+            margin-top: 22px;
+            color: #2c4359;
+            opacity: 0.75;
+            letter-spacing: 0.3px;
+        }
+    </style>
+</head>
+<body>
+<div class="dashboard">
+    <div class="gauge-container">
+        <canvas id="manometerCanvas" width="500" height="500">
+            Ваш браузер не поддерживает Canvas
+        </canvas>
+    </div>
+    <div class="value-wrapper">
+        <div class="pressure-value" id="currentPressureDisplay">0.0 атм</div>
+    </div>
+
+    <!-- Панель ползунков: нижний и верхний пороги -->
+    <div class="sliders-panel">
+        <div class="slider-group">
+            <label>
+                🔽 НИЖНИЙ ПОРОГ (включение насоса)
+                <span id="minThresholdVal">1.40</span> атм
+            </label>
+            <input type="range" id="minSlider" min="0" max="8" step="0.05" value="1.4">
+            <div class="threshold-hint">
+                <span>0 атм</span>
+                <span>давление ≤ порога → запуск насоса</span>
+                <span>8 атм</span>
+            </div>
+        </div>
+
+        <div class="slider-group">
+            <label>
+                🔼 ВЕРХНИЙ ПОРОГ (выключение насоса)
+                <span id="maxThresholdVal">6.20</span> атм
+            </label>
+            <input type="range" id="maxSlider" min="0" max="8" step="0.05" value="6.2">
+            <div class="threshold-hint">
+                <span>0 атм</span>
+                <span>давление ≥ порога → остановка насоса</span>
+                <span>8 атм</span>
+            </div>
+        </div>
+
+        <button class="save-btn" id="saveButton">
+            💾 СОХРАНИТЬ ЗНАЧЕНИЯ
+        </button>
+    </div>
+    <footer>Манометр с ценой деления 0.1 атм | Жирные засечки порогов | Металлическая стрелка с хвостовиком</footer>
+</div>
+<div id="toastMsg" class="toast-msg">✔️ Пороги сохранены</div>
+
+<script>
+    (function(){
+        // ----- НОВАЯ ШКАЛА: 0 .. 8 атмосфер -----
+        const MIN_GAUGE = 0;
+        const MAX_GAUGE = 8;
+
+        // ----- Исходные пороги -----
+        let minPressure = 1.4;      // нижний порог (вкл.)
+        let maxPressure = 6.2;      // верхний порог (выкл.)
+
+        // ----- Текущее давление (симуляция датчика) -----
+        let currentPressure = 2.7;
+        let pressureDirection = 1;   // 1 = рост, -1 = падение
+        let simulationInterval = null;
+
+        // DOM элементы
+        const canvas = document.getElementById('manometerCanvas');
+        const ctx = canvas.getContext('2d');
+        const minSlider = document.getElementById('minSlider');
+        const maxSlider = document.getElementById('maxSlider');
+        const minSpan = document.getElementById('minThresholdVal');
+        const maxSpan = document.getElementById('maxThresholdVal');
+        const currentPressureSpan = document.getElementById('currentPressureDisplay');
+        const saveBtn = document.getElementById('saveButton');
+        const toast = document.getElementById('toastMsg');
+
+        // ----- Вспомогательные функции -----
+        function degToRad(deg) {
+            return (deg * Math.PI) / 180;
+        }
+
+        // Установка размеров canvas + отрисовка
+        function resizeAndDraw() {
+            const container = canvas.parentElement;
+            const size = Math.min(container.clientWidth, 480);
+            canvas.style.width = `${size}px`;
+            canvas.style.height = `${size}px`;
+            canvas.width = 500;
+            canvas.height = 500;
+            drawGauge();
+        }
+
+        function drawHeavyThresholdMark(pressureValue, color, outlineColor = '#221c15', isLow = true) {
+            if (pressureValue < MIN_GAUGE) pressureValue = MIN_GAUGE;
+            if (pressureValue > MAX_GAUGE) pressureValue = MAX_GAUGE;
+            const w = canvas.width;
+            const h = canvas.height;
+            const centerX = w / 2;
+            const centerY = h / 2;
+            const radius = w * 0.42;
+            const startAngle = degToRad(-225);
+            const endAngle = degToRad(45);
+            const angleRange = endAngle - startAngle;
+            let t = (pressureValue - MIN_GAUGE) / (MAX_GAUGE - MIN_GAUGE);
+            t = Math.min(Math.max(t, 0), 1);
+            let angle = startAngle + t * angleRange;
+
+            // Жирная засечка: радиальная линия, выступающая внутрь и наружу
+            const innerRad = radius - 18;
+            const outerRad = radius + 22;
+            const x1 = centerX + innerRad * Math.cos(angle);
+            const y1 = centerY + innerRad * Math.sin(angle);
+            const x2 = centerX + outerRad * Math.cos(angle);
+            const y2 = centerY + outerRad * Math.sin(angle);
+
+            ctx.beginPath();
+            ctx.moveTo(x1, y1);
+            ctx.lineTo(x2, y2);
+            ctx.lineWidth = 8;
+            ctx.strokeStyle = color;
+            ctx.shadowBlur = 2;
+            ctx.shadowColor = "rgba(0,0,0,0.3)";
+            ctx.stroke();
+            // Дополнительный внутренний блик для выразительности
+            ctx.beginPath();
+            ctx.moveTo(x1, y1);
+            ctx.lineTo(centerX + (innerRad+3) * Math.cos(angle), centerY + (innerRad+3) * Math.sin(angle));
+            ctx.lineWidth = 2.5;
+            ctx.strokeStyle = "#fff9e0";
+            ctx.stroke();
+        }
+
+        // ---- Профессиональная металлическая стрелка с хвостовиком (реалистичный манометр) ----
+        function drawMetalPointer(angle, centerX, centerY, radius) {
+            // Длина основной стрелки (от центра до острия)
+            const mainLength = radius - 20;
+            // Длина хвостовика (противовес, как у реальных манометров)
+            const tailLength = radius * 0.27;
+
+            // Угол для хвостовика (противоположное направление)
+            const tailAngle = angle + Math.PI;
+
+            // ---- Геометрия основной стрелки (трапециевидная, сужающаяся к концу) ----
+            const baseWidth = 18;      // ширина у основания (ступица)
+            const tipWidth = 4;        // ширина на конце
+
+            // Вектор направления стрелки
+            const dirX = Math.cos(angle);
+            const dirY = Math.sin(angle);
+            // Перпендикулярный вектор (для ширины)
+            const perpX = -Math.sin(angle);
+            const perpY = Math.cos(angle);
+
+            // Точки основания (около центра, но с отступом, чтобы не перекрывать ступицу)
+            const baseDist = 14;
+            const baseLeftX = centerX + baseDist * dirX + (baseWidth/2) * perpX;
+            const baseLeftY = centerY + baseDist * dirY + (baseWidth/2) * perpY;
+            const baseRightX = centerX + baseDist * dirX - (baseWidth/2) * perpX;
+            const baseRightY = centerY + baseDist * dirY - (baseWidth/2) * perpY;
+
+            // Точки острия
+            const tipX = centerX + mainLength * dirX;
+            const tipY = centerY + mainLength * dirY;
+            const tipLeftX = tipX + (tipWidth/2) * perpX;
+            const tipLeftY = tipY + (tipWidth/2) * perpY;
+            const tipRightX = tipX - (tipWidth/2) * perpX;
+            const tipRightY = tipY - (tipWidth/2) * perpY;
+
+            // Рисуем тело стрелки (полигон)
+            ctx.beginPath();
+            ctx.moveTo(baseLeftX, baseLeftY);
+            ctx.lineTo(tipLeftX, tipLeftY);
+            ctx.lineTo(tipRightX, tipRightY);
+            ctx.lineTo(baseRightX, baseRightY);
+            ctx.closePath();
+
+            // Металлический градиент (хром/сталь)
+            const metalGrad = ctx.createLinearGradient(
+                centerX + dirX * 10, centerY + dirY * 10,
+                centerX + dirX * (mainLength - 15), centerY + dirY * (mainLength - 15)
+            );
+            metalGrad.addColorStop(0, '#e0e5ec');
+            metalGrad.addColorStop(0.3, '#b0b6c2');
+            metalGrad.addColorStop(0.7, '#8f95a1');
+            metalGrad.addColorStop(1, '#cbd0d9');
+            ctx.fillStyle = metalGrad;
+            ctx.fill();
+
+            // Добавляем центральную световую полосу (эффект фаски)
+            ctx.beginPath();
+            const ridgeWidth = 3.5;
+            const ridgeLeftX = centerX + baseDist * dirX + (ridgeWidth) * perpX;
+            const ridgeLeftY = centerY + baseDist * dirY + (ridgeWidth) * perpY;
+            const ridgeRightX = centerX + baseDist * dirX - (ridgeWidth) * perpX;
+            const ridgeRightY = centerY + baseDist * dirY - (ridgeWidth) * perpY;
+            const ridgeTipL = tipX + 2 * perpX;
+            const ridgeTipR = tipX - 2 * perpX;
+            ctx.moveTo(ridgeLeftX, ridgeLeftY);
+            ctx.lineTo(ridgeTipL, tipY);
+            ctx.lineTo(ridgeTipR, tipY);
+            ctx.lineTo(ridgeRightX, ridgeRightY);
+            ctx.fillStyle = "rgba(255, 255, 245, 0.5)";
+            ctx.fill();
+
+            // ---- Хвостовик (противовес) - закруглённая лопатка как у настоящих манометров ----
+            const tailBaseDist = 12;
+            const tailWidth = 12;
+            const tailLengthScaled = tailLength;
+
+            const tailDirX = Math.cos(tailAngle);
+            const tailDirY = Math.sin(tailAngle);
+            const tailPerpX = -Math.sin(tailAngle);
+            const tailPerpY = Math.cos(tailAngle);
+
+            const tailBaseX = centerX + tailBaseDist * tailDirX;
+            const tailBaseY = centerY + tailBaseDist * tailDirY;
+            const tailEndX = centerX + tailLengthScaled * tailDirX;
+            const tailEndY = centerY + tailLengthScaled * tailDirY;
+
+            const tailLeftX = tailBaseX + (tailWidth/2) * tailPerpX;
+            const tailLeftY = tailBaseY + (tailWidth/2) * tailPerpY;
+            const tailRightX = tailBaseX - (tailWidth/2) * tailPerpX;
+            const tailRightY = tailBaseY - (tailWidth/2) * tailPerpY;
+            const tailEndLeftX = tailEndX + (tailWidth/2.5) * tailPerpX;
+            const tailEndLeftY = tailEndY + (tailWidth/2.5) * tailPerpY;
+            const tailEndRightX = tailEndX - (tailWidth/2.5) * tailPerpX;
+            const tailEndRightY = tailEndY - (tailWidth/2.5) * tailPerpY;
+
+            ctx.beginPath();
+            ctx.moveTo(tailLeftX, tailLeftY);
+            ctx.lineTo(tailEndLeftX, tailEndLeftY);
+            ctx.lineTo(tailEndRightX, tailEndRightY);
+            ctx.lineTo(tailRightX, tailRightY);
+            ctx.closePath();
+            const tailGrad = ctx.createLinearGradient(tailBaseX, tailBaseY, tailEndX, tailEndY);
+            tailGrad.addColorStop(0, '#a0a6b2');
+            tailGrad.addColorStop(1, '#6e7480');
+            ctx.fillStyle = tailGrad;
+            ctx.fill();
+
+            // контур для четкости
+            ctx.beginPath();
+            ctx.moveTo(baseLeftX, baseLeftY);
+            ctx.lineTo(tipLeftX, tipLeftY);
+            ctx.lineTo(tipRightX, tipRightY);
+            ctx.lineTo(baseRightX, baseRightY);
+            ctx.closePath();
+            ctx.lineWidth = 0.8;
+            ctx.strokeStyle = "#4f5a66";
+            ctx.stroke();
+
+            ctx.beginPath();
+            ctx.moveTo(tailLeftX, tailLeftY);
+            ctx.lineTo(tailEndLeftX, tailEndLeftY);
+            ctx.lineTo(tailEndRightX, tailEndRightY);
+            ctx.lineTo(tailRightX, tailRightY);
+            ctx.closePath();
+            ctx.stroke();
+        }
+
+        // ---- Главная функция отрисовки манометра с частой шкалой (цена деления 0.1 атм) ----
+        function drawGauge() {
+            if (!ctx) return;
+            const w = canvas.width;
+            const h = canvas.height;
+            const centerX = w / 2;
+            const centerY = h / 2;
+            const radius = w * 0.42;
+            const startAngle = degToRad(-225);
+            const endAngle = degToRad(45);
+            const angleRange = endAngle - startAngle;
+
+            ctx.clearRect(0, 0, w, h);
+            ctx.shadowBlur = 0;
+
+            // внешний ободок (хромированный)
+            ctx.beginPath();
+            ctx.arc(centerX, centerY, radius + 8, 0, Math.PI * 2);
+            ctx.strokeStyle = '#bfb8a8';
+            ctx.lineWidth = 3;
+            ctx.stroke();
+            ctx.beginPath();
+            ctx.arc(centerX, centerY, radius + 5, 0, Math.PI * 2);
+            ctx.strokeStyle = '#d6cfbc';
+            ctx.lineWidth = 1.8;
+            ctx.stroke();
+
+            // ============================================================
+            // 1. РИСКИ И ПОДПИСИ: ЦЕНА ДЕЛЕНИЯ 0.1 АТМ (каждая 0.1 имеет риску)
+            //    Каждые 0.5 - более длинная, каждые 1.0 - с цифрами + жирнее
+            // ============================================================
+            for (let p = MIN_GAUGE; p <= MAX_GAUGE + 0.01; p += 0.1) {
+                let pRounded = Math.round(p * 10) / 10;
+                if (pRounded > MAX_GAUGE) continue;
+                let t = (pRounded - MIN_GAUGE) / (MAX_GAUGE - MIN_GAUGE);
+                let angle = startAngle + t * angleRange;
+
+                // Определяем тип засечки
+                const isFullAtm = Math.abs(pRounded - Math.round(pRounded)) < 0.01;
+                const isHalfAtm = Math.abs(pRounded * 2 - Math.round(pRounded * 2)) < 0.05 && !isFullAtm;
+
+                let innerR, outerR, lineWidthVal;
+                if (isFullAtm) {
+                    innerR = radius - 18;
+                    outerR = radius + 8;
+                    lineWidthVal = 2.8;
+                } else if (isHalfAtm) {
+                    innerR = radius - 13;
+                    outerR = radius + 5;
+                    lineWidthVal = 2.0;
+                } else {
+                    innerR = radius - 9;
+                    outerR = radius + 2;
+                    lineWidthVal = 1.2;
+                }
+
+                const x1 = centerX + innerR * Math.cos(angle);
+                const y1 = centerY + innerR * Math.sin(angle);
+                const x2 = centerX + outerR * Math.cos(angle);
+                const y2 = centerY + outerR * Math.sin(angle);
+                ctx.beginPath();
+                ctx.moveTo(x1, y1);
+                ctx.lineTo(x2, y2);
+                ctx.lineWidth = lineWidthVal;
+                ctx.strokeStyle = '#2f415b';
+                ctx.stroke();
+
+                // подписи для целых значений (0,1,2...8)
+                if (isFullAtm && pRounded >= MIN_GAUGE && pRounded <= MAX_GAUGE) {
+                    let textR = radius - 27;
+                    let xText = centerX + textR * Math.cos(angle);
+                    let yText = centerY + textR * Math.sin(angle);
+                    ctx.font = `600 ${w * 0.048}px "Segoe UI", "Roboto"`;
+                    ctx.fillStyle = '#2c4b67';
+                    ctx.shadowBlur = 0;
+                    ctx.fillText(Math.round(pRounded).toString(), xText - 8, yText + 7);
+                }
+            }
+
+            // Доп. подпись "атм" внизу шкалы
+            ctx.font = `500 ${w * 0.045}px "Segoe UI"`;
+            ctx.fillStyle = "#2c5a6e";
+            ctx.fillText("атм", centerX - 18, centerY + radius * 0.72);
+
+            // вспомогательные индикаторы границ 0 и 8 атм (крупные метки)
+            for (let edge of [0, 8]) {
+                let tEdge = (edge - MIN_GAUGE) / (MAX_GAUGE - MIN_GAUGE);
+                let angleEdge = startAngle + tEdge * angleRange;
+                let r1 = radius - 20;
+                let r2 = radius + 12;
+                let xe1 = centerX + r1 * Math.cos(angleEdge);
+                let ye1 = centerY + r1 * Math.sin(angleEdge);
+                let xe2 = centerX + r2 * Math.cos(angleEdge);
+                let ye2 = centerY + r2 * Math.sin(angleEdge);
+                ctx.beginPath();
+                ctx.moveTo(xe1, ye1);
+                ctx.lineTo(xe2, ye2);
+                ctx.lineWidth = 3.5;
+                ctx.strokeStyle = "#9b7e5f";
+                ctx.stroke();
+            }
+
+            // ============================================================
+            // 2. ОТРИСОВКА ПОРОГОВ (ЖИРНЫЕ ЗАСЕЧКИ)
+            // ============================================================
+            drawHeavyThresholdMark(minPressure, '#d43f34', '#2c1a12', true);
+            drawHeavyThresholdMark(maxPressure, '#e68a2e', '#2c1a12', false);
+
+            // ----- СТРЕЛКА (металлическая с хвостовиком) ----
+            let pressureNorm = (currentPressure - MIN_GAUGE) / (MAX_GAUGE - MIN_GAUGE);
+            pressureNorm = Math.min(Math.max(pressureNorm, 0), 1);
+            let anglePointer = startAngle + pressureNorm * angleRange;
+
+            // Включаем тени для объёма стрелки (но не для меток)
+            ctx.shadowBlur = 6;
+            ctx.shadowColor = "rgba(0,0,0,0.35)";
+            drawMetalPointer(anglePointer, centerX, centerY, radius);
+            ctx.shadowBlur = 0;
+
+            // центральная ступица (металлическая гайка с бликом)
+            ctx.fillStyle = "#353c45";
+            ctx.beginPath();
+            ctx.arc(centerX, centerY, 13, 0, 2*Math.PI);
+            ctx.fill();
+            ctx.fillStyle = "#5e6b7c";
+            ctx.beginPath();
+            ctx.arc(centerX, centerY, 9, 0, 2*Math.PI);
+            ctx.fill();
+            const hubGrad = ctx.createLinearGradient(centerX-5, centerY-5, centerX+5, centerY+5);
+            hubGrad.addColorStop(0, "#a9b2c2");
+            hubGrad.addColorStop(1, "#7a8494");
+            ctx.fillStyle = hubGrad;
+            ctx.beginPath();
+            ctx.arc(centerX, centerY, 6, 0, 2*Math.PI);
+            ctx.fill();
+
+            // маленький винт в центре
+            ctx.fillStyle = "#d4dce6";
+            ctx.beginPath();
+            ctx.arc(centerX, centerY, 2.8, 0, 2*Math.PI);
+            ctx.fill();
+            ctx.fillStyle = "#2d2f36";
+            ctx.beginPath();
+            ctx.arc(centerX, centerY, 1.2, 0, 2*Math.PI);
+            ctx.fill();
+
+            // Блик на стекле (полупрозрачный)
+            ctx.beginPath();
+            ctx.ellipse(centerX - radius*0.2, centerY - radius*0.25, radius*0.22, radius*0.12, 0, 0, Math.PI*2);
+            ctx.fillStyle = "rgba(255, 250, 240, 0.15)";
+            ctx.fill();
+        }
+
+        // ---- Обновление интерфейса из переменных ----
+        function updateUIFromVariables() {
+            minSlider.value = minPressure;
+            maxSlider.value = maxPressure;
+            minSpan.innerText = minPressure.toFixed(2);
+            maxSpan.innerText = maxPressure.toFixed(2);
+            currentPressureSpan.innerText = currentPressure.toFixed(2) + " атм";
+            drawGauge();
+        }
+
+        // ---- Синхронизация слайдеров и коррекция ----
+        function syncMinMaxFromSliders() {
+            let newMin = parseFloat(minSlider.value);
+            let newMax = parseFloat(maxSlider.value);
+            if (newMin >= newMax) {
+                if (document.activeElement === minSlider) {
+                    newMin = Math.max(MIN_GAUGE, newMax - 0.08);
+                    minSlider.value = newMin;
+                } else if (document.activeElement === maxSlider) {
+                    newMax = Math.min(MAX_GAUGE, newMin + 0.08);
+                    maxSlider.value = newMax;
+                } else {
+                    if (newMin >= newMax) {
+                        newMin = newMax - 0.08;
+                        if (newMin < MIN_GAUGE) newMin = MIN_GAUGE;
+                        minSlider.value = newMin;
+                    }
+                }
+            }
+            minPressure = parseFloat(minSlider.value);
+            maxPressure = parseFloat(maxSlider.value);
+            minSpan.innerText = minPressure.toFixed(2);
+            maxSpan.innerText = maxPressure.toFixed(2);
+            drawGauge();
+        }
+
+        function saveThresholds() {
+            let rawMin = parseFloat(minSlider.value);
+            let rawMax = parseFloat(maxSlider.value);
+            if (rawMin >= rawMax) {
+                rawMin = Math.max(MIN_GAUGE, rawMax - 0.1);
+                minSlider.value = rawMin;
+                rawMax = Math.min(MAX_GAUGE, rawMin + 0.1);
+                maxSlider.value = rawMax;
+            }
+            minPressure = parseFloat(minSlider.value);
+            maxPressure = parseFloat(maxSlider.value);
+            minSpan.innerText = minPressure.toFixed(2);
+            maxSpan.innerText = maxPressure.toFixed(2);
+            drawGauge();
+            toast.classList.add('show');
+            setTimeout(() => {
+                toast.classList.remove('show');
+            }, 1600);
+            console.log(`[IoT] Сохранены уставки: нижний порог=${minPressure.toFixed(2)} атм, верхний порог=${maxPressure.toFixed(2)} атм`);
+        }
+
+        function simulatePressureChanges() {
+            let step = 0.013;
+            if (pressureDirection === 1) {
+                currentPressure += step;
+                if (currentPressure >= maxPressure) {
+                    currentPressure = maxPressure;
+                    pressureDirection = -1;
+                }
+            } else {
+                currentPressure -= step;
+                if (currentPressure <= minPressure) {
+                    currentPressure = minPressure;
+                    pressureDirection = 1;
+                }
+            }
+            if (currentPressure > MAX_GAUGE) currentPressure = MAX_GAUGE;
+            if (currentPressure < MIN_GAUGE) currentPressure = MIN_GAUGE;
+            currentPressureSpan.innerText = currentPressure.toFixed(2) + " атм";
+            drawGauge();
+        }
+
+        function startSimulation() {
+            if (simulationInterval) clearInterval(simulationInterval);
+            simulationInterval = setInterval(() => {
+                simulatePressureChanges();
+            }, 70);
+        }
+
+        function bindEvents() {
+            minSlider.addEventListener('input', () => {
+                let val = parseFloat(minSlider.value);
+                let maxVal = parseFloat(maxSlider.value);
+                if (val >= maxVal) {
+                    val = Math.max(MIN_GAUGE, maxVal - 0.08);
+                    minSlider.value = val;
+                }
+                minPressure = parseFloat(minSlider.value);
+                minSpan.innerText = minPressure.toFixed(2);
+                drawGauge();
+            });
+
+            maxSlider.addEventListener('input', () => {
+                let val = parseFloat(maxSlider.value);
+                let minVal = parseFloat(minSlider.value);
+                if (val <= minVal) {
+                    val = Math.min(MAX_GAUGE, minVal + 0.08);
+                    maxSlider.value = val;
+                }
+                maxPressure = parseFloat(maxSlider.value);
+                maxSpan.innerText = maxPressure.toFixed(2);
+                drawGauge();
+            });
+
+            saveBtn.addEventListener('click', () => {
+                let rawMin = parseFloat(minSlider.value);
+                let rawMax = parseFloat(maxSlider.value);
+                if (rawMin >= rawMax) {
+                    rawMin = Math.max(MIN_GAUGE, rawMax - 0.1);
+                    minSlider.value = rawMin;
+                    rawMax = Math.min(MAX_GAUGE, rawMin + 0.1);
+                    maxSlider.value = rawMax;
+                }
+                minPressure = parseFloat(minSlider.value);
+                maxPressure = parseFloat(maxSlider.value);
+                minSpan.innerText = minPressure.toFixed(2);
+                maxSpan.innerText = maxPressure.toFixed(2);
+                drawGauge();
+                saveThresholds();
+            });
+        }
+
+        function init() {
+            resizeAndDraw();
+            bindEvents();
+            minSlider.value = minPressure;
+            maxSlider.value = maxPressure;
+            updateUIFromVariables();
+            startSimulation();
+            window.addEventListener('resize', () => {
+                resizeAndDraw();
+            });
+        }
+
+        init();
+    })();
+</script>
+</body>
+</html>
