diff --git a/frontend/src/admin/sections/SettingsSection.svelte b/frontend/src/admin/sections/SettingsSection.svelte
index 050e061..361c4a9 100644
--- a/frontend/src/admin/sections/SettingsSection.svelte
+++ b/frontend/src/admin/sections/SettingsSection.svelte
@@ -38,6 +38,19 @@
   let copiedWebhookKey = "";
   let copiedWebhookTimer = null;
 
+  const PLATEGA_SBP_KEYS = new Set(["PLATEGA_SBP_ENABLED", "PLATEGA_SBP_METHOD"]);
+  const PLATEGA_CRYPTO_KEYS = new Set(["PLATEGA_CRYPTO_ENABLED", "PLATEGA_CRYPTO_METHOD"]);
+  const PLATEGA_LEGACY_KEYS = new Set(["PLATEGA_PAYMENT_METHOD"]);
+  const LEGACY_TARIFF_TRAFFIC_KEYS = new Set(["TRAFFIC_PACKAGES", "STARS_TRAFFIC_PACKAGES"]);
+  const SEMANTIC_FIELD_GROUP_ORDER = {
+    platega_common: 1,
+    platega_sbp: 2,
+    platega_crypto: 3,
+    platega_legacy: 4,
+    legacy_tariff_periods: 1,
+    legacy_tariff_traffic: 2,
+  };
+
   $: settingsAllOpen =
     visibleSettingsSections.length > 0 &&
     settingsOpenSections.length === visibleSettingsSections.length;
@@ -220,6 +233,108 @@
     }));
   }
 
+  function fieldGroupMeta(
+    id,
+    titleKey,
+    titleFallback,
+    descriptionKey = "",
+    descriptionFallback = ""
+  ) {
+    return { id, titleKey, titleFallback, descriptionKey, descriptionFallback };
+  }
+
+  function plategaSemanticGroup(field) {
+    const key = String(field?.key || "");
+    if (PLATEGA_SBP_KEYS.has(key) || key.startsWith("PAYMENT_PLATEGA_SBP_")) {
+      return fieldGroupMeta(
+        "platega_sbp",
+        "settings_group_platega_sbp",
+        "SBP/card button",
+        "settings_group_platega_sbp_hint",
+        "Visibility, method ID, and labels for the SBP/card payment button."
+      );
+    }
+    if (PLATEGA_CRYPTO_KEYS.has(key) || key.startsWith("PAYMENT_PLATEGA_CRYPTO_")) {
+      return fieldGroupMeta(
+        "platega_crypto",
+        "settings_group_platega_crypto",
+        "Crypto button",
+        "settings_group_platega_crypto_hint",
+        "Visibility, method ID, and labels for the crypto payment button."
+      );
+    }
+    if (PLATEGA_LEGACY_KEYS.has(key)) {
+      return fieldGroupMeta(
+        "platega_legacy",
+        "settings_group_platega_legacy",
+        "Legacy compatibility",
+        "settings_group_platega_legacy_hint",
+        "Fallback method for old Platega callbacks and deployments."
+      );
+    }
+    return fieldGroupMeta(
+      "platega_common",
+      "settings_group_platega_common",
+      "Common settings",
+      "settings_group_platega_common_hint",
+      "Shared merchant credentials, redirects, and API endpoint."
+    );
+  }
+
+  function legacyTariffSemanticGroup(field) {
+    const key = String(field?.key || "");
+    if (LEGACY_TARIFF_TRAFFIC_KEYS.has(key)) {
+      return fieldGroupMeta(
+        "legacy_tariff_traffic",
+        "settings_group_legacy_tariff_traffic",
+        "Legacy traffic packages",
+        "settings_group_legacy_tariff_traffic_hint",
+        "Packages used only when the JSON tariff catalog is not configured."
+      );
+    }
+    return fieldGroupMeta(
+      "legacy_tariff_periods",
+      "settings_group_legacy_tariff_periods",
+      "Legacy subscription periods",
+      "settings_group_legacy_tariff_periods_hint",
+      "Month toggles and prices used only by the old remnawave-tg-shop mode."
+    );
+  }
+
+  function semanticFieldGroup(section, group, field) {
+    if (section?.id === "payments" && group?.id === "Platega") {
+      return plategaSemanticGroup(field);
+    }
+    if (section?.id === "pricing") {
+      return legacyTariffSemanticGroup(field);
+    }
+    return null;
+  }
+
+  function semanticFieldGroups(section, group) {
+    const fields = group?.fields || [];
+    const result = new Map();
+    for (const field of fields) {
+      const meta = semanticFieldGroup(section, group, field) || fieldGroupMeta("_default", "", "");
+      if (!result.has(meta.id)) {
+        result.set(meta.id, { ...meta, fields: [] });
+      }
+      result.get(meta.id).fields.push(field);
+    }
+    return Array.from(result.values()).sort(
+      (a, b) =>
+        (SEMANTIC_FIELD_GROUP_ORDER[a.id] || 999) - (SEMANTIC_FIELD_GROUP_ORDER[b.id] || 999)
+    );
+  }
+
+  function fieldGroupTitle(group) {
+    return group.titleKey ? at(group.titleKey, {}, group.titleFallback) : "";
+  }
+
+  function fieldGroupDescription(group) {
+    return group.descriptionKey ? at(group.descriptionKey, {}, group.descriptionFallback) : "";
+  }
+
   function adminLocaleKey(key) {
     const raw = String(key || "");
     return raw.startsWith("admin_") ? raw.slice("admin_".length) : raw;
@@ -358,6 +473,35 @@
   </div>
 {/snippet}
 
+{#snippet renderGroupedFields(section, group)}
+  {@const fieldGroups = semanticFieldGroups(section, group)}
+  {#if fieldGroups.length === 1 && !fieldGroups[0].titleKey}
+    {#each fieldGroups[0].fields as field}
+      {@render renderField(field)}
+    {/each}
+  {:else}
+    <div class="admin-settings-field-groups">
+      {#each fieldGroups as fieldGroup}
+        <section class="admin-settings-field-group">
+          {#if fieldGroup.titleKey}
+            <header class="admin-settings-field-group-head">
+              <strong>{fieldGroupTitle(fieldGroup)}</strong>
+              {#if fieldGroupDescription(fieldGroup)}
+                <small>{fieldGroupDescription(fieldGroup)}</small>
+              {/if}
+            </header>
+          {/if}
+          <div class="admin-settings-field-group-body">
+            {#each fieldGroup.fields as field}
+              {@render renderField(field)}
+            {/each}
+          </div>
+        </section>
+      {/each}
+    </div>
+  {/if}
+{/snippet}
+
 {#snippet renderField(field)}
   {@const revealed = isSecretRevealed(field.key)}
   <div class="admin-setting" class:is-overridden={isOverridden(field)}>
@@ -600,9 +744,7 @@
               {#if rootGroup.webhook}
                 {@render renderWebhookHint(rootGroup.webhook)}
               {/if}
-              {#each rootGroup.fields as field}
-                {@render renderField(field)}
-              {/each}
+              {@render renderGroupedFields(section, rootGroup)}
             {/if}
             {#if labelGroups.length}
               <Accordion.Root
@@ -646,9 +788,7 @@
                         {#if group.webhook}
                           {@render renderWebhookHint(group.webhook)}
                         {/if}
-                        {#each group.fields as field}
-                          {@render renderField(field)}
-                        {/each}
+                        {@render renderGroupedFields(section, group)}
                       </div>
                     </Accordion.Content>
                   </Accordion.Item>
diff --git a/frontend/src/styles/admin.css b/frontend/src/styles/admin.css
index e0c08f1..ca84000 100644
--- a/frontend/src/styles/admin.css
+++ b/frontend/src/styles/admin.css
@@ -1823,7 +1823,6 @@
   font-size: 13px;
   font-weight: 600;
   color: var(--admin-text);
-  text-transform: capitalize;
   word-break: break-word;
   min-width: 0;
 }
@@ -1851,8 +1850,43 @@
   overflow: hidden;
 }
 
+.admin-accordion-content[data-state="open"] {
+  animation: admin-accordion-open 140ms cubic-bezier(0.16, 1, 0.3, 1);
+}
+
 .admin-accordion-content[data-state="closed"] {
-  display: none;
+  animation: admin-accordion-close 110ms cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+@keyframes admin-accordion-open {
+  from {
+    height: 0;
+    opacity: 0.72;
+  }
+
+  to {
+    height: var(--bits-accordion-content-height);
+    opacity: 1;
+  }
+}
+
+@keyframes admin-accordion-close {
+  from {
+    height: var(--bits-accordion-content-height);
+    opacity: 1;
+  }
+
+  to {
+    height: 0;
+    opacity: 0.72;
+  }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .admin-accordion-content[data-state="open"],
+  .admin-accordion-content[data-state="closed"] {
+    animation: none;
+  }
 }
 
 @media (max-width: 720px) {
@@ -1996,6 +2030,50 @@
   text-decoration: underline;
 }
 
+.admin-settings-field-groups {
+  display: grid;
+  gap: 10px;
+  padding: 12px 18px 18px;
+}
+
+.admin-settings-field-group {
+  display: grid;
+  min-width: 0;
+  overflow: hidden;
+  border: 1px solid color-mix(in srgb, var(--admin-border) 88%, transparent);
+  border-radius: 10px;
+  background: color-mix(in srgb, var(--admin-bg) 52%, transparent);
+}
+
+.admin-settings-field-group-head {
+  display: grid;
+  gap: 3px;
+  padding: 10px 14px;
+  border-bottom: 1px solid var(--admin-border);
+  background: color-mix(in srgb, var(--admin-surface-2) 56%, transparent);
+}
+
+.admin-settings-field-group-head strong {
+  color: var(--admin-text);
+  font-size: 12px;
+  font-weight: 750;
+  line-height: 1.25;
+}
+
+.admin-settings-field-group-head small {
+  color: var(--admin-muted);
+  font-size: 11px;
+  line-height: 1.35;
+}
+
+.admin-settings-field-group-body .admin-setting {
+  padding-inline: 14px;
+}
+
+.admin-settings-field-group-body .admin-setting:last-child {
+  border-bottom: 0;
+}
+
 .admin-setting:last-child {
   border-bottom: 0;
 }
@@ -2762,6 +2840,14 @@
     justify-self: start;
   }
 
+  .admin-settings-field-groups {
+    padding: 10px 14px 14px;
+  }
+
+  .admin-settings-field-group-body .admin-setting {
+    padding-inline: 12px;
+  }
+
   .admin-card-head {
     padding: 12px 14px;
   }
@@ -3489,8 +3575,7 @@
   font-size: 12px;
   font-weight: 700;
   color: var(--admin-text);
-  text-transform: uppercase;
-  letter-spacing: 0.06em;
+  letter-spacing: 0;
   min-width: 0;
 }
 
diff --git a/locales/en.json b/locales/en.json
index bba929e..db21e6c 100644
--- a/locales/en.json
+++ b/locales/en.json
@@ -943,7 +943,7 @@
   "admin_logs_empty": "No entries",
   "admin_settings_section_general": "General",
   "admin_settings_section_appearance": "Appearance",
-  "admin_settings_section_pricing": "Tariffs and prices",
+  "admin_settings_section_pricing": "Legacy tariff compatibility",
   "admin_settings_section_payments": "Payment systems",
   "admin_settings_section_trial": "Trial",
   "admin_settings_section_referral": "Referral program",
@@ -951,6 +951,7 @@
   "admin_settings_section_devices": "Devices",
   "admin_settings_section_support": "Support",
   "admin_settings_subsection_common": "Common",
+  "admin_settings_subsection_checkout": "Checkout",
   "admin_settings_subsection_remnawave": "Remnawave",
   "admin_settings_subsection_telegram_stars": "Telegram Stars",
   "admin_settings_subsection_yookassa": "YooKassa",
@@ -1241,9 +1242,21 @@
   "admin_ads_col_status": "Status",
   "admin_no_data": "No data",
   "admin_settings_hint": "Changes in the admin panel take precedence over .env. The 'Reset' button returns the value from environment variables.",
-  "admin_settings_legacy_tariffs_warning_title": "Legacy tariffs",
-  "admin_settings_legacy_tariffs_warning_body": "These settings do not apply when tariffs are configured in the dedicated Tariffs section.",
+  "admin_settings_legacy_tariffs_warning_title": "remnawave-tg-shop legacy compatibility",
+  "admin_settings_legacy_tariffs_warning_body": "These fields are only for the old mode without a JSON catalog. They do not apply when tariffs are configured in the dedicated Tariffs section.",
   "admin_settings_legacy_tariffs_warning_link": "Open Tariffs",
+  "admin_settings_group_platega_common": "Common settings",
+  "admin_settings_group_platega_common_hint": "Merchant details, API URL, and return pages shared by all Platega buttons.",
+  "admin_settings_group_platega_sbp": "SBP/card button",
+  "admin_settings_group_platega_sbp_hint": "Visibility, method ID, and labels for the card or SBP payment button.",
+  "admin_settings_group_platega_crypto": "Crypto button",
+  "admin_settings_group_platega_crypto_hint": "Visibility, method ID, and labels for the crypto payment button.",
+  "admin_settings_group_platega_legacy": "Legacy compatibility",
+  "admin_settings_group_platega_legacy_hint": "Fallback method for old Platega callbacks and deployments.",
+  "admin_settings_group_legacy_tariff_periods": "Legacy subscription periods",
+  "admin_settings_group_legacy_tariff_periods_hint": "Monthly periods and prices for compatibility with old remnawave-tg-shop mode.",
+  "admin_settings_group_legacy_tariff_traffic": "Legacy traffic packages",
+  "admin_settings_group_legacy_tariff_traffic_hint": "Traffic packages for the old mode without a JSON tariff catalog.",
   "admin_collapse_all": "Collapse all",
   "admin_expand_all": "Expand all",
   "admin_settings_params_count": "{count} parameters",
diff --git a/locales/ru.json b/locales/ru.json
index c7a4985..b4790d6 100644
--- a/locales/ru.json
+++ b/locales/ru.json
@@ -943,7 +943,7 @@
   "admin_logs_empty": "Записей нет",
   "admin_settings_section_general": "Общие",
   "admin_settings_section_appearance": "Внешний вид",
-  "admin_settings_section_pricing": "Тарифы и цены",
+  "admin_settings_section_pricing": "Совместимость с legacy-тарифами",
   "admin_settings_section_payments": "Платёжные системы",
   "admin_settings_section_trial": "Триал",
   "admin_settings_section_referral": "Реферальная программа",
@@ -951,6 +951,7 @@
   "admin_settings_section_devices": "Устройства",
   "admin_settings_section_support": "Поддержка",
   "admin_settings_subsection_common": "Общие",
+  "admin_settings_subsection_checkout": "Оформление оплаты",
   "admin_settings_subsection_remnawave": "Remnawave",
   "admin_settings_subsection_telegram_stars": "Telegram Stars",
   "admin_settings_subsection_yookassa": "YooKassa",
@@ -1241,9 +1242,21 @@
   "admin_ads_col_status": "Статус",
   "admin_no_data": "Нет данных",
   "admin_settings_hint": "Изменения в админке имеют приоритет над .env. Кнопка «Сбросить» возвращает значение из переменных окружения.",
-  "admin_settings_legacy_tariffs_warning_title": "Legacy-тарифы",
-  "admin_settings_legacy_tariffs_warning_body": "Эти настройки не применяются, если тарифы настроены через отдельный раздел «Тарифы».",
+  "admin_settings_legacy_tariffs_warning_title": "Совместимость с remnawave-tg-shop legacy",
+  "admin_settings_legacy_tariffs_warning_body": "Эти поля нужны только для старого режима без JSON-каталога. Если тарифы настроены через отдельный раздел «Тарифы», они не применяются.",
   "admin_settings_legacy_tariffs_warning_link": "Открыть тарифы",
+  "admin_settings_group_platega_common": "Общие настройки",
+  "admin_settings_group_platega_common_hint": "Данные мерчанта, URL API и страницы возврата для всех кнопок Platega.",
+  "admin_settings_group_platega_sbp": "Кнопка SBP/карта",
+  "admin_settings_group_platega_sbp_hint": "Включение, method ID и тексты кнопки для оплаты картой или через SBP.",
+  "admin_settings_group_platega_crypto": "Кнопка Crypto",
+  "admin_settings_group_platega_crypto_hint": "Включение, method ID и тексты кнопки для криптооплаты.",
+  "admin_settings_group_platega_legacy": "Legacy-совместимость",
+  "admin_settings_group_platega_legacy_hint": "Fallback-метод для старых callback и старых установок Platega.",
+  "admin_settings_group_legacy_tariff_periods": "Legacy-подписки на срок",
+  "admin_settings_group_legacy_tariff_periods_hint": "Месячные периоды и цены для режима совместимости со старым remnawave-tg-shop.",
+  "admin_settings_group_legacy_tariff_traffic": "Legacy-пакеты трафика",
+  "admin_settings_group_legacy_tariff_traffic_hint": "Пакеты трафика для старого режима без JSON-каталога тарифов.",
   "admin_collapse_all": "Свернуть всё",
   "admin_expand_all": "Развернуть всё",
   "admin_settings_params_count": "{count} параметров",